JP2019021031A - Sensor system, radio terminal device, management device, management method and management program - Google Patents

Abstract

To perform appropriate data management.SOLUTION: A sensor system 201 comprises: a radio terminal device 101 which transmits sensor data including a measurement result of a sensor in a wireless manner; and a management device 102 which receives the sensor data transmitted from the radio terminal device 101. The radio terminal device 101 performs discrimination processing for discriminating whether to transmit sensor data in a predetermined communication cycle. The discrimination processing includes: a first discrimination for discriminating whether a relationship of the sensor data and reference data meets a predetermined condition; and a second discrimination for comparing a skip count in which it is discriminated in the discrimination processing not to transmit sensor data, with a predetermined maximum skip count. The radio terminal device 101 discriminates whether to transmit sensor data based on a result of the first discrimination and a result of the second discrimination in the discrimination processing. The radio terminal device 101 resets a skip count in a case where it is discriminated to transmit sensor data, and increases the skip count in a case where it is discriminated not to transmit sensor data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sensor system, a wireless terminal device, a management device, a management method, and a management program.

  Conventionally, an apparatus for monitoring equipment and the like provided in a factory has been developed. For example, Japanese Unexamined Patent Application Publication No. 2006-163517 (Patent Document 1) describes the following abnormality detection device. That is, the abnormality detection device is an abnormality detection device having detection means provided on a monitoring target and arithmetic means for diagnosing the state of the monitoring target by a neural network based on detection data from the detection means, The arithmetic means forms a model of the neural network using predetermined model creation data, diagnoses the state of the monitoring target based on detection data using the neural network model, and detects detection data at a predetermined time point The model of the neural network is updated by adding the input vector by as an intermediate layer, and after the update, the state of the monitoring target is diagnosed using the updated model of the neural network.

JP 2006-163517 A

  According to the apparatus described in Patent Document 1 described above, it is possible to detect an abnormality that has occurred in the facility without the need for human intervention. In addition, in such a device, it is desirable that detection data is transmitted by wireless communication in order to avoid reconfiguration of a production line in a factory.

  However, when wireless communication is always performed, power consumption and communication load increase. Therefore, it is conceivable to restrict the transmission of the detection data. In this case, the reception side intentionally restricts the transmission of the detection data, or the detection data of the detection data is unintentionally due to an abnormality in the transmission side device. Cannot distinguish whether transmission is restricted.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a sensor system, a wireless terminal device, a management device, a management method, and a management program capable of performing appropriate data management. is there.

  (1) In order to solve the above-described problem, a sensor system according to an aspect of the present invention includes a wireless terminal device that wirelessly transmits sensor data including a sensor measurement result, and the sensor data transmitted from the wireless terminal device. The wireless terminal device performs a determination process for determining whether to transmit the sensor data at a predetermined communication cycle, and the determination process is performed between the sensor data and the reference data. A first determination for determining whether or not the relationship satisfies a predetermined condition, and a second determination for comparing a skip count determined not to transmit the sensor data in the determination process with a predetermined maximum skip count, In the determination process, the wireless terminal device determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination, Serial wireless terminal resets the skip count when determining to transmit the sensor data, increasing the number of skips when it is determined not to transmit the sensor data.

  (12) In order to solve the above problem, a wireless terminal device according to an aspect of the present invention performs a determination process for determining whether to wirelessly transmit sensor data including a sensor measurement result at a predetermined communication cycle. A determination unit; and a communication unit configured to transmit the sensor data when the determination unit determines to transmit the sensor data, and the determination process includes: whether the relationship between the sensor data and the reference data satisfies a predetermined condition A first determination for determining whether or not the second determination is made to compare a skip count determined not to transmit the sensor data in the determination process with a predetermined maximum skip count, and the determination unit includes the determination process. The determination unit determines whether to transmit the sensor data based on the first determination result and the second determination result, and the determination unit transmits the sensor data. And resetting said skip count if it is determined to increase the number of skips when it is determined not to transmit the sensor data.

  (13) In order to solve the above-described problem, a management device according to an aspect of the present invention includes a receiving unit that receives sensor data including at least identification information, a measurement result, and a communication cycle of a sensor; If new sensor data is not received even after the time of the communication cycle has elapsed since the reception of the sensor data, it corresponds to the new sensor data based on the sensor data previously received by the receiving unit. And a processing unit that generates complementary data to be processed.

  (14) In order to solve the above-described problem, a management method according to an aspect of the present invention includes a wireless terminal device that wirelessly transmits sensor data including a sensor measurement result, and the sensor data transmitted from the wireless terminal device. A management method for a sensor system comprising: a management device that receives a signal, wherein the wireless terminal device performs a determination process for determining whether to transmit the sensor data at a predetermined communication cycle; and the wireless terminal And a step of transmitting the sensor data to the management device when the apparatus determines to transmit the sensor data, and the determination process determines whether a relationship between the sensor data and reference data satisfies a predetermined condition. A first determination that determines whether the sensor data is not transmitted in the determination process, and a predetermined maximum skip count The wireless terminal device resets the skip count when it is determined to transmit the sensor data and determines not to transmit the sensor data in the step of performing the determination process. The skip count is increased.

  (15) In order to solve the above-described problem, a management method according to another aspect of the present invention is a management method in a wireless terminal device, and determines whether to wirelessly transmit sensor data including a sensor measurement result. Performing the determination process at a predetermined communication cycle and transmitting the sensor data when it is determined to transmit the sensor data. The determination process has a predetermined relationship between the sensor data and the reference data. Including a first determination for determining whether or not a condition is satisfied, and a second determination for comparing a skip count determined not to transmit the sensor data in the determination processing with a predetermined maximum skip count, In the performing step, when it is determined that the sensor data is to be transmitted, the skip count is reset, and it is determined that the sensor data is not transmitted. Increasing the number of skips when.

  (16) In order to solve the above-described problem, a management method according to another aspect of the present invention is a management method in a management device, and receives sensor data including at least identification information, a measurement result, and a communication cycle of a sensor. And, if new sensor data is not received even if the time of the communication cycle has elapsed since the previous reception of the sensor data, the new sensor data is handled based on the previously received sensor data. Generating complementary data to be performed.

  (17) In order to solve the above-described problem, a management program according to an aspect of the present invention is a management program used in a wireless terminal device, wherein the computer wirelessly transmits sensor data including a sensor measurement result. It is a program for functioning as a determination unit that performs a determination process for determining whether or not to transmit the sensor data when the determination unit determines to transmit the sensor data, and a communication unit that transmits the sensor data. The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination for comparing the number of times, and the determination unit includes a result of the first determination and the first determination in the determination process. Based on the determination result, it is determined whether or not to transmit the sensor data, and when the determination unit determines to transmit the sensor data, the skip count is reset and the sensor data is determined not to be transmitted. In such a case, the skip count is increased.

  (18) In order to solve the above-described problem, a management program according to another aspect of the present invention is a management program used in a management device, and includes at least computer identification information, measurement results, and a communication cycle. A receiving unit that receives sensor data including, and if the sensor unit does not receive new sensor data even after the time of the communication cycle has elapsed since the previous receiving of the sensor data at the receiving unit, the receiving unit receives the previous sensor data. This is a program for functioning as a processing unit that generates complementary data corresponding to new sensor data based on the sensor data.

  The present invention can be realized not only as a sensor system including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing.

  The present invention can be realized not only as a wireless terminal device including such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes part or all of the wireless terminal device.

  The present invention can be realized not only as a management apparatus including such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes a part or all of the management apparatus.

  According to the present invention, appropriate data management can be performed.

FIG. 1 is a diagram showing a configuration of a sensor system according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a specific example (part 1) of the first determination by the wireless terminal device according to the embodiment of the present invention. FIG. 3 is a diagram for explaining a specific example (No. 2) of the first determination by the wireless terminal device according to the embodiment of the present invention. FIG. 4 is a diagram showing a specific example (1-1) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 5 is a diagram showing a specific example (1-2) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 6 is a diagram showing a specific example (2-1) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 7 is a diagram showing a specific example (2-2) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 8 is a diagram showing a specific example (2-3) of the screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 9 is a flowchart showing an example of the operation flow of the wireless terminal device according to the embodiment of the present invention. FIG. 10 is a flowchart showing an example of the operation flow of the management apparatus according to the embodiment of the present invention.

  First, the contents of the embodiment of the present invention will be listed and described.

  (1) A sensor system according to an embodiment of the present invention includes a wireless terminal device that wirelessly transmits sensor data including a sensor measurement result, and a management device that receives the sensor data transmitted from the wireless terminal device. The wireless terminal device performs a determination process for determining whether or not to transmit the sensor data at a predetermined communication cycle, and the determination process determines whether a relationship between the sensor data and reference data satisfies a predetermined condition A first determination that determines whether or not, and a second determination that compares a skip count determined not to transmit the sensor data in the determination process with a predetermined maximum skip count, In the processing, it is determined whether to transmit the sensor data based on the result of the first determination and the result of the second determination, and the wireless terminal device Resetting said skip count when determining to transmit a Sadeta, increasing the number of skips when it is determined not to transmit the sensor data.

  With such a configuration, the number of sensor data transmissions can be limited to achieve power saving and a reduction in communication load. Further, in the management device, when the number of times that the sensor data does not arrive continuously exceeds the maximum number of skips, it can be determined that there is an abnormality in the wireless terminal device. Therefore, appropriate data management can be performed.

  (2) Preferably, the reference data is the sensor data transmitted by the wireless terminal device last time.

  With such a configuration, it is possible to determine whether or not to transmit sensor data based on the amount of change in the measurement result, and thus it is possible to more appropriately limit the number of transmissions of sensor data.

  (3) Preferably, the wireless terminal device acquires a plurality of sensor data including measurement results of a plurality of types of sensors, performs the first determination for each acquired sensor data, and The predetermined condition can be set, and the wireless terminal device determines to transmit the plurality of sensor data when there is at least one type of sensor data that does not satisfy the corresponding predetermined condition in the first determination.

  With such a configuration, it is possible to appropriately determine whether or not to transmit a plurality of sensor data even when there are a plurality of types of measurement targets.

  (4) Preferably, the wireless terminal device acquires a plurality of the sensor data including measurement results of a plurality of types of sensors, and performs the determination processing and the skip count reset for each of the acquired sensor data. The maximum number of skips is common for each type.

  With such a configuration, even when there are a plurality of types of measurement objects, the second determination can be performed with a simple process.

  (5) Preferably, the wireless terminal device acquires a plurality of sensor data each including measurement results of a plurality of types of sensors, performs the determination processing for each of the acquired sensor data, and in each of the types The communication cycle is common.

  With such a configuration, since a plurality of sensor data can be transmitted together, power consumption and communication load can be further reduced.

  (6) Preferably, the sensor data includes at least identification information, a measurement result, and the communication cycle of the sensor, and the management device has passed the time of the communication cycle after receiving the sensor data last time. However, if new sensor data is not received, complementary data corresponding to the new sensor data is generated based on the previously received sensor data.

  With such a configuration, even when sensor data is not transmitted, data loss can be prevented in the management apparatus.

  (7) More preferably, the sensor data further includes determination criterion information related to the maximum skip count and the predetermined condition, and the management device includes the sensor data received last time and the sensor data received this time. The complementary data is generated based on the determination criterion information.

  With such a configuration, the management device can predict the measurement result included in the sensor data that has not been transmitted by the wireless terminal device by grasping the predetermined condition indicated by the determination criterion information. It is possible to generate more appropriate complementary data.

  (8) Preferably, the sensor data includes at least identification information of the sensor, a measurement result, the communication cycle, and the maximum skip count, and the management device receives the sensor data last time and then receives the communication cycle. If no new sensor data is received even after the time of the maximum number of skips has elapsed, a predetermined output is performed.

  With such a configuration, for example, when the user confirms the output result, it is possible to easily grasp that an abnormality has occurred in the wireless terminal device.

  (9) Preferably, the management device performs a process of displaying the measurement result indicated by the received sensor data and the measurement result indicated by the complementary data in different modes.

  With such a configuration, the user can easily distinguish between the measurement result indicated by the sensor data and the measurement result indicated by the complementary data by confirming the display mode of the measurement result.

  (10) More preferably, the sensor data includes at least identification information of the sensor, a measurement result, the communication cycle, and the maximum skip count, and the management device receives the sensor data before the communication. If new sensor data is not received even when the maximum number of skip times of the period has elapsed, processing for deleting the display of the complementary data is performed.

  With such a configuration, when an abnormality occurs in the wireless terminal device, it is possible to avoid displaying a measurement result with low reliability.

  (11) More preferably, the sensor data includes at least identification information of the sensor, a measurement result, the communication cycle, and the maximum skip count, and the management device receives the sensor data before the communication. If new sensor data is not received even after the maximum number of skip times of the period has elapsed, processing for displaying the complementary data in a further different manner is performed.

  With such a configuration, the user can easily grasp that an abnormality has occurred in the wireless terminal device by confirming the display mode of the measurement result.

  (12) A wireless terminal device according to an embodiment of the present invention includes a determination unit that performs a determination process for determining whether or not to wirelessly transmit sensor data including a sensor measurement result in a predetermined communication cycle, and the determination unit A communication unit that transmits the sensor data, the determination process determines whether or not a relationship between the sensor data and reference data satisfies a predetermined condition. And a second determination that compares a skip count determined not to transmit the sensor data in the determination process with a predetermined maximum skip count, and the determination unit includes the first determination in the determination process. Based on the result and the result of the second determination, it is determined whether or not to transmit the sensor data, and the determination unit determines that the sensor data is to be transmitted when it determines that the sensor data is to be transmitted. It resets the flop count, increasing the number of skips when it is determined not to transmit the sensor data.

  With such a configuration, the number of sensor data transmissions can be limited to achieve power saving and a reduction in communication load. Further, in the management device, when the number of times that the sensor data does not arrive continuously exceeds the maximum number of skips, it can be determined that there is an abnormality in the wireless terminal device. Therefore, appropriate data management can be performed.

  (13) A management device according to an embodiment of the present invention includes a receiving unit that receives sensor data including at least identification information, a measurement result, and a communication cycle of a sensor, and the receiving unit receives the previous sensor data. A process of generating complementary data corresponding to the new sensor data based on the sensor data previously received by the receiving unit when no new sensor data is received even after the communication period has elapsed A part.

  With such a configuration, it is possible to prevent data loss in the management device even when sensor data is not transmitted after limiting the number of times sensor data is transmitted. Therefore, appropriate data management can be performed.

  (14) A management method according to an embodiment of the present invention includes: a wireless terminal device that wirelessly transmits sensor data including sensor measurement results; and a management device that receives the sensor data transmitted from the wireless terminal device. A management method in a sensor system comprising: a step in which the wireless terminal device performs a determination process for determining whether or not to transmit the sensor data at a predetermined communication cycle; and the wireless terminal device transmits the sensor data A first determination for determining whether a relationship between the sensor data and reference data satisfies a predetermined condition; and a step of transmitting the sensor data to the management device when it is determined that the sensor data is transmitted. And a second determination for comparing the number of skips determined not to transmit the sensor data in the determination process with a predetermined maximum number of skips. The wireless terminal device, the in the determination processing step of performing a resetting said skip count when determining to transmit the sensor data, increasing the number of skips when it is determined not to transmit the sensor data.

  By such a method, the number of transmissions of sensor data can be limited to achieve power saving and a reduction in communication load. Further, in the management device, when the number of times that the sensor data does not arrive continuously exceeds the maximum number of skips, it can be determined that there is an abnormality in the wireless terminal device. Therefore, appropriate data management can be performed.

  (15) A management method according to an embodiment of the present invention is a management method in a wireless terminal device, and a determination process for determining whether to wirelessly transmit sensor data including a sensor measurement result is performed in a predetermined communication cycle. And a step of transmitting the sensor data when it is determined to transmit the sensor data, and the determination processing determines whether or not a relationship between the sensor data and reference data satisfies a predetermined condition In the step of performing the determination process, the first determination to be performed and a second determination that compares a skip count determined not to transmit the sensor data in the determination process with a predetermined maximum skip count. If it is determined to transmit, the skip count is reset, and if it is determined not to transmit the sensor data, the skip count is set. To be pressurized.

  By such a method, the number of transmissions of sensor data can be limited to achieve power saving and a reduction in communication load. On the sensor data receiving side, if the number of times the sensor data does not arrive continuously exceeds the maximum number of skips, it is possible to determine that there is an abnormality in the wireless terminal device. Therefore, appropriate data management can be performed.

  (16) A management method according to an embodiment of the present invention is a management method in a management device, the step of receiving sensor data including at least identification information, a measurement result, and a communication cycle of a sensor, and the previous sensor data Generating new complementary data corresponding to the new sensor data based on the previously received sensor data if no new sensor data is received even after the communication period has elapsed since including.

  By such a method, it is possible to prevent data loss in the management apparatus even when sensor data is not transmitted after limiting the number of times sensor data is transmitted. Therefore, appropriate data management can be performed.

  (17) A management program according to an embodiment of the present invention is a management program used in a wireless terminal device, and a determination process for determining whether or not to wirelessly transmit sensor data including a sensor measurement result to a computer. And a communication unit that transmits the sensor data when the determination unit determines to transmit the sensor data, and the determination process is performed by the sensor. A first determination for determining whether the relationship between the data and the reference data satisfies a predetermined condition, and a second comparison for comparing the number of skips determined not to transmit the sensor data in the determination process with a predetermined maximum number of skips The determination unit is configured to determine whether the determination process includes a determination result based on the result of the first determination and the result of the second determination. It is determined whether to transmit sensor data, and the determination unit resets the skip count when it is determined to transmit the sensor data, and increases the skip count when it is determined not to transmit the sensor data. Let

  With such a configuration, the number of sensor data transmissions can be limited to achieve power saving and a reduction in communication load. On the sensor data receiving side, if the number of times the sensor data does not arrive continuously exceeds the maximum number of skips, it is possible to determine that there is an abnormality in the wireless terminal device. Therefore, appropriate data management can be performed.

  (18) A management program according to an embodiment of the present invention is a management program used in a management device, and receives a sensor data including at least sensor identification information, a measurement result, and a communication cycle from a computer. And, when the sensor does not receive new sensor data even after the time of the communication cycle has elapsed since receiving the sensor data last time in the receiving unit, based on the sensor data received last time by the receiving unit, It is a program for functioning as a processing unit that generates complementary data corresponding to new sensor data.

  With such a configuration, it is possible to prevent data loss in the management device even when sensor data is not transmitted after limiting the number of times sensor data is transmitted. Therefore, appropriate data management can be performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Moreover, you may combine arbitrarily at least one part of embodiment described below.

<Configuration and basic operation>
[Sensor system]
FIG. 1 is a diagram showing a configuration of a sensor system according to an embodiment of the present invention.

  With reference to FIG. 1, the sensor system 201 includes a wireless terminal device 101 and a management device 102.

  The wireless terminal device 101 is provided in a target facility such as a factory, for example, and measures a measurement target such as a temperature in the target facility at a predetermined measurement cycle. The measurement cycle is 30 seconds or 1 minute, and can be set by the user.

  In addition, the wireless terminal device 101 transmits the sensor data X including the measurement result to the management device 102 via the network 161 at a predetermined communication cycle T. The communication cycle T is, for example, the same as the measurement cycle or longer than the measurement cycle, and can be set by the user. Here, as an example, it is assumed that the communication cycle T and the measurement cycle are the same cycle.

  Further, the wireless terminal device 101 can measure a plurality of types of measurement objects such as temperature and humidity. In this case, for example, the measurement cycle is common to each type. In this case, the wireless terminal device 101 transmits a plurality of sensor data X each including a plurality of types of measurement results to the management device 102 via the network 161 at a predetermined communication period T.

  The management apparatus 102 receives the sensor data X from the wireless terminal apparatus 101, and notifies the measurement result such as the temperature in the target facility based on the received sensor data X.

  Further, the sensor system 201 may further include an access point that relays communication between the wireless terminal device 101 and the management device 102.

[Wireless terminal device]
(Outline configuration)
The wireless terminal device 101 includes a processing unit 11 and a communication unit 12. The processing unit 11 is realized by a semiconductor integrated circuit such as a CPU (Central Processing Unit) and a DSP (Digital Signal Processor), for example. The processing unit 11 and the communication unit 12 are realized by separate semiconductor integrated circuits.

  The processing unit 11 always operates when the power of its own wireless terminal device 101 is on. The processing unit 11 performs measurement of the measurement target and determination on whether or not to transmit the sensor data X including the measurement result to the management apparatus 102 at a predetermined communication cycle T. If the processing unit 11 determines to transmit the sensor data X, the processing unit 11 activates the communication unit 12 that has stopped operating, and outputs the sensor data X to the communication unit 12.

  Upon receiving the sensor data X from the processing unit 11, the communication unit 12 transmits the sensor data X to the management apparatus 102 via the network 161.

  The processing unit 11 stops the operation of the communication unit 12 when a predetermined time has elapsed from the timing when the sensor data X is output to the communication unit 12.

  On the other hand, if the processing unit 11 determines not to transmit the sensor data X, the communication unit 12 is not activated and the sensor data X is not output, and the skip count is the number of times that it is continuously determined that the sensor data X is not transmitted. S is incremented and incremented. The skip count S is held in, for example, the processing unit 11.

(Detailed configuration of the processing unit)
The processing unit 11 includes a determination unit 21, a measurement unit (sensor) 22, a setting unit 23, and a storage unit 24.

  For example, the setting unit 23 notifies the measurement unit 22 of the communication cycle T stored in the storage unit 24. The measurement unit 22 performs measurement of the measurement target in the communication cycle T notified from the setting unit 23, and outputs sensor data X including the measurement result to the determination unit 21.

  The processing unit 11 may include a plurality of measurement units 22 that measure different types of measurement targets. In FIG. 1, one measuring unit 22 is shown as an example.

  In addition to the communication cycle T, the storage unit 24 further stores identification information (hereinafter referred to as “ID”) of the wireless terminal device 101, determination criterion information, maximum skip count Smax, and skip count S. Has been.

  The determination reference information indicates, for example, the maximum value Dmax and the minimum value Dmin of the difference value D between the measurement value Me as the measurement result and the reference value. In the storage unit 24, for example, determination criterion information for each type of measurement target is stored.

  The determination criterion information is not limited to information indicating the maximum value Dmax and the minimum value Dmin of the difference value D, and may be information indicating the maximum value and the minimum value of the ratio of the difference value D to the reference value, for example.

  The maximum skip count Smax is the maximum allowable number of times that the wireless terminal device 101 does not continuously transmit the sensor data X. The maximum skip count Smax may be common among a plurality of types of sensor data X, or may be a value different from each other among a plurality of types of sensor data X. Here, as an example, it is assumed that the maximum skip count Smax is common among a plurality of types of sensor data X. The maximum skip count Smax can be set by the user.

  The determination unit 21 performs determination processing for determining whether or not to transmit the sensor data X received from the measurement unit 22. The determination process includes a first determination and a second determination, and the determination unit 21 determines whether to transmit the sensor data X based on the determination result of the first determination and the determination result of the second determination. I do.

  More specifically, the determination unit 21 is based on the sensor data X received from the measurement unit 22 and the corresponding determination reference information stored in the storage unit 24, and the sensor data X and reference data indicating a reference value. A first determination is made to determine whether or not the relationship between and satisfies a predetermined condition.

  The reference data is, for example, sensor data X transmitted by the wireless terminal device 101 last time. That is, the reference value indicated by the reference data is the measured value Me indicated by the sensor data X transmitted by the wireless terminal device 101 last time.

  The reference data is not limited to the sensor data X transmitted by the wireless terminal device 101 last time, but may be data indicating a predetermined measurement value Me, for example.

(A) Specific Example of First Determination FIG. 2 is a diagram for explaining a specific example (part 1) of the first determination by the wireless terminal device according to the embodiment of the present invention. FIG. 3 is a diagram for explaining a specific example (No. 2) of the first determination by the wireless terminal device according to the embodiment of the present invention.

  With reference to FIG. 2 and FIG. 3, it is assumed here that the measurement unit 22 is configured to measure the temperature in the target facility. Further, it is assumed that the maximum value Dmax indicated by the criterion information is “+ A ° C.” and the minimum value Dmin is “−B ° C.”.

  In addition, the sensor data X transmitted last time by the wireless terminal device 101 is “sensor data X0”, and the current sensor data X that is a determination target of whether or not the wireless terminal device 101 transmits is “sensor data X1”. Suppose that

  In this case, for example, the determination unit 21 calculates the upper limit threshold Th1 and the lower limit threshold Th2 of the measurement value Me based on the measurement value Me0 indicated by the sensor data X0 and the maximum value Dmax and the minimum value Dmin indicated by the determination criterion information. . That is, the determination unit 21 calculates the upper limit threshold Th1 = measured value (Me0 + A) ° C. and the lower limit threshold Th2 = measured value (Me0−B) ° C.

  And the determination part 21 confirms as a 1st determination whether the measured value Me1 which the sensor data X1 shows is more than lower limit threshold Th2 and below upper limit threshold Th1.

  For example, as shown in FIG. 2, it is assumed that the measured value Me1 is not less than the lower limit threshold Th2 and not more than the upper limit threshold Th1 (Me0−B ≦ Me1 ≦ Me0 + A), that is, the sensor data X1 satisfies a predetermined condition. In this case, the determination unit 21 compares the skip count S, which is the number of times that the sensor data X is determined not to be transmitted in the determination process, with the maximum skip count Smax stored in the storage unit 24. I do.

  On the other hand, as shown in FIG. 3, the determination unit 21 transmits the sensor data X1 when the measured value Me1 exceeds the upper limit threshold Th1 (Me0 + A <Me1), that is, when the sensor data X1 does not satisfy the predetermined condition. judge.

  Similarly, the determination unit 21 determines that the sensor data X1 is transmitted when the measured value Me1 is smaller than the lower limit threshold Th2 (Me1 <Me0-B).

  In addition, when the processing unit 11 includes a plurality of measurement units 22 that respectively measure a plurality of types of measurement objects, the predetermined condition can be set for each type. That is, the maximum value Dmax and the minimum value Dmin indicated by the criterion information can be set for each type.

  In this case, the determination unit 21 acquires the sensor data X from each measurement unit 22, and performs a first determination for determining whether the relationship between the sensor data X and the reference data satisfies a corresponding predetermined condition. . Then, the determination unit 21 determines to transmit a plurality of sensor data X when there is at least one type of sensor data X that does not satisfy the corresponding predetermined condition in the first determination.

  On the other hand, the determination part 21 performs 2nd determination, when all the sensor data X satisfy | fills corresponding predetermined conditions.

  Note that the determination unit 21 is not limited to the above configuration, and may be a configuration in which, for example, only the sensor data X that does not satisfy the corresponding predetermined condition among the plurality of sensor data X is transmitted.

  However, there is no significant difference in power consumption between the case where the communication unit 12 in the wireless terminal device 101 transmits one sensor data X and the case where a plurality of sensor data X is transmitted. Therefore, in the present embodiment, the determination unit 21 determines to transmit a plurality of sensor data X when there is at least one type of sensor data X that does not satisfy the corresponding predetermined condition in the first determination.

(B) Specific Example of Second Determination Referring again to FIG. 1, the determination unit 21 confirms whether or not the skip count S is less than the maximum skip count Smax in the second determination. Then, the determination unit 21 determines that the sensor data X is not transmitted when the skip count S is less than the maximum skip count Smax. On the other hand, the determination unit 21 determines to transmit the sensor data X when the skip count S is equal to or greater than the maximum skip count Smax.

  For example, it is assumed that the skip count S stored in the storage unit 24 is “1” and the maximum skip count stored in the storage unit 24 is “2”. In this case, the determination unit 21 determines that the sensor data X is not transmitted because the skip count S is less than the maximum skip count Smax.

  If the determination unit 21 determines not to transmit the sensor data X, the determination unit 21 increments the skip count S stored in the storage unit 24 by one.

  Further, for example, it is assumed that the skip count S stored in the storage unit 24 is “2” and the maximum skip count stored in the storage unit 24 is “2”. In this case, the determination unit 21 determines to transmit the sensor data X because the skip count S is equal to or greater than the maximum skip count Smax.

  When the determination unit 21 determines to transmit the sensor data X, the determination unit 21 activates the communication unit 12, the measurement value Me obtained by the measurement unit 22, and the ID of the wireless terminal device 101 stored in the storage unit 24. The sensor data X including the communication cycle T, the determination reference information, and the maximum skip count Smax is output to the communication unit 12.

  The communication unit 12 transmits the sensor data X received from the determination unit 21 to the management apparatus 102 via the network 161.

  Further, when the determination unit 21 determines to transmit the sensor data X and outputs the sensor data X to the communication unit 12, the determination unit 21 resets the skip count S stored in the storage unit 24.

  Note that the wireless terminal device 101 may be configured without the measurement unit 22. In this case, for example, the sensor system 201 further includes one or more sensors in addition to the wireless terminal device 101 and the management device 102, and the wireless terminal device 101 receives sensor data X from each sensor.

[Management device]
The management device 102 includes a reception unit 31, a processing unit 32, a temporary storage unit 33, a storage unit 34, and an output unit 35.

  The receiving unit 31 receives the sensor data X transmitted from the wireless terminal device 101 via the network 161 and outputs the received sensor data X to the processing unit 32.

  When receiving the sensor data X from the receiving unit 31, the processing unit 32 stores the sensor data X and the current time in the temporary storage unit 33 and the storage unit 34, respectively.

  Further, the processing unit 32 counts the number of skips S in which the wireless terminal device 101 has not continuously transmitted the sensor data X based on the communication cycle T indicated by the sensor data X stored in the temporary storage unit 33. .

  More specifically, the processing unit 32 determines whether or not new sensor data X has been received every time the communication cycle T has elapsed since the timing of receiving the sensor data X, that is, new sensor data X has arrived. Confirm whether or not. When the new sensor data X has not arrived, the processing unit 32 increments the skip count S stored in the temporary storage unit 33 by one.

  In addition, the processing unit 32 confirms whether or not the skip count S after counting up is equal to or less than the maximum skip count Smax stored in the temporary storage unit 33. Then, when the skip count S is equal to or less than the maximum skip count Smax, the processing unit 32 stores the measurement value Me indicated by the sensor data X received from the reception unit 31 last time and the sensor data X stored in the temporary storage unit 33. Complementary data Y is created based on the determination criterion information shown.

  Specifically, it is assumed that the maximum value Dmax indicated by the criterion information is “+ A ° C.” and the minimum value Dmin is “−B ° C.”. In this case, for example, the processing unit 32 calculates the upper limit threshold Th1 = measured value Me + A ° C. and the lower limit threshold Th2 = measured value Me−B ° C.

  Then, the processing unit 32 creates complementary data Y indicating the lower limit threshold Th2 (= Me−B) to the upper limit threshold Th1 (= Me + A) as the range of the measured value Me, and the generated complementary data Y and the current time Is stored in the temporary storage unit 33.

  Note that the complementary data Y may indicate, for example, the measurement value Me indicated by the sensor data X received by the processing unit 32 last time, that is, the reference value, instead of indicating the range of the measurement value Me. Further, the complementary data Y may indicate a predetermined measurement value Me regardless of the measurement value Me indicated by the sensor data X received by the processing unit 32 last time.

  The processing unit 32 deletes the complementary data Y when the skip count S after counting up exceeds the maximum skip count Smax and the complementary data Y is already stored in the temporary storage unit 33. To do. Further, in this case, the processing unit 32 determines that an abnormality has occurred in the wireless terminal device 101, the ID of the wireless terminal device 101 indicated by the sensor data X stored in the temporary storage unit 33, and the wireless terminal device An abnormality notification indicating that an abnormality has occurred in 101 is output to the output unit 35.

  When receiving the ID and the abnormality notification from the processing unit 32, the output unit 35 performs a predetermined output. For example, the output unit 35 performs a process of displaying a screen indicating the content of the ID and the abnormality notification on a monitor or the like of its own management device 102.

  The output unit 35 is not limited to a configuration that performs a predetermined output when receiving an ID and abnormality notification from the processing unit 32, for example, when receiving an ID and abnormality notification from the processing unit 32, In addition, when the own management apparatus 102 receives an inquiry from a user, a configuration may be used in which a predetermined output is performed.

  Further, when the processing unit 32 receives new sensor data X from the reception unit 31, the processing unit 32 stores the sensor data X and the current time in the temporary storage unit 33 and the storage unit 34, respectively. Further, in this case, the processing unit 32 stores the complementary data Y stored in the temporary storage unit 33 and the time corresponding to the complementary data Y in the storage unit 34, and the skip count stored in the temporary storage unit 33. Reset S.

  For example, the output unit 35 performs, for example, a time series change of the measurement value Me based on the complementary data Y and time stored in the temporary storage unit 33 and the sensor data X and time stored in the storage unit 34. The display screen Sc is displayed on a monitor or the like provided in its own management apparatus 102.

  At this time, for example, the output unit 35 performs a process of displaying the value indicated by the complementary data Y and the measured value Me indicated by the sensor data X in different modes.

  Moreover, the output part 35 performs the process which deletes the display of the complementary data Y, or the process which displays the complementary data Y in a different aspect, when the abnormality notification from the process part 32 is received.

(A) Specific example (1)
FIG. 4 is a diagram showing a specific example (1-1) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 5 is a diagram showing a specific example (1-2) of a screen displayed by the management apparatus according to the embodiment of the present invention.

  Referring to FIG. 4, here, it is assumed that the maximum skip count Smax is “2”. Further, at time t0, the processing unit 32 receives the sensor data X0, and at time t1 when the time of the communication cycle T has elapsed from time t0, the processing unit 32 does not receive the sensor data X, and the time of the communication cycle T has elapsed from time t1. Assume that the processing unit 32 receives new sensor data X2 at the time t2. Further, it is assumed that the complementary data Y is created at time t1.

  In this case, in the period from time t2 until the time of the communication cycle T elapses, the temporary storage unit 33 stores the set of time t0 and sensor data X0, the set of time t1 and complementary data Y1, and the time t2 and sensor. A set of data X2 is stored. In this period, the storage unit 34 includes the same data as the data stored in the temporary storage unit 33, that is, a set of time t0 and sensor data X0, a set of time t1 and complementary data Y1, and a time t2 and A set of sensor data X2 is stored.

  On the screen Sc, for example, the output unit 35 displays the measurement value Me indicated by the sensor data X0 in a black circle figure at a location corresponding to the time t0, and the measurement value Me indicated by the complementary data Y1 at a location corresponding to the time t1. The range, that is, the range from the lower limit threshold Th2 (= Me−B) to the upper limit threshold Th1 (= Me + A) is displayed as a black belt-like figure, and the measured value Me indicated by the sensor data X2 is indicated by a black circle Performs processing to display with graphics.

  As another example, referring to FIG. 5, for example, it is assumed that the complementary data Y1 indicates the reference value, that is, the measured value Me indicated by the sensor data X0, instead of indicating the range of the measured value Me.

  In this case, on the screen Sc, for example, the output unit 35 displays the measurement value Me indicated by the sensor data X0 as a black circle figure at a location corresponding to the time t0, and the measurement indicated by the complementary data Y1 at a location corresponding to the time t1. The value Me is displayed as a white circle, and the measurement value Me indicated by the sensor data X2 is displayed as a black circle at a location corresponding to the time t2.

(B) Specific example (2)
FIG. 6 is a diagram showing a specific example (2-1) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 7 is a diagram showing a specific example (2-2) of a screen displayed by the management apparatus according to the embodiment of the present invention. FIG. 8 is a diagram showing a specific example (2-3) of the screen displayed by the management apparatus according to the embodiment of the present invention.

  Referring to FIG. 6, it is assumed here that the maximum skip count Smax is “2”. Further, it is assumed that the processing unit 32 receives the sensor data X0 at time t0 and the processing unit 32 does not receive the sensor data X at time t1 and time t2. Further, it is assumed that the complementary data Y1 is created at time t1, and the complementary data Y2 is created at time t2.

  In this case, after the time t2, until the time of the communication cycle T elapses, the temporary storage unit 33 stores the set of the time t0 and the sensor data X0, the set of the time t1 and the complementary data Y1, and the time t2 and the complementary. A set of data Y2 is stored. In the period, the storage unit 34 stores a set of time t0 and sensor data X0.

  On the screen Sc, for example, the output unit 35 displays the measurement value Me indicated by the sensor data X0 in a black circle figure at a location corresponding to the time t0, and the measurement value Me indicated by the complementary data Y1 at a location corresponding to the time t1. The range is displayed as a black band-shaped graphic, and the range of the measurement value Me indicated by the supplementary data Y2 is displayed as a black band-shaped graphic at a position corresponding to time t2.

  After that, at time t3 when the time of the communication cycle T has elapsed from time t2, new sensor data X does not arrive at the processing unit 32, and the number of skips S stored in the temporary storage unit 33 exceeds the maximum number of skips Smax. Suppose.

  In this case, the processing unit 32 outputs the ID of the wireless terminal device 101 and the abnormality notification indicated by the sensor data X0 stored in the temporary storage unit 33 in a period after the time t2 until the time of the communication cycle T elapses. The complementary data Y1 and Y2 output to the unit 35 and stored in the temporary storage unit 33 are deleted from the temporary storage unit 33.

  As shown in FIG. 7, for example, the output unit 35 deletes the graphic corresponding to the time t1 and the graphic corresponding to the time t2 on the screen Sc shown in FIG. Processing to display the effect on the screen Sc is performed.

  As shown in FIG. 8, the output unit 35 performs a process of displaying these graphics with a broken line or the like instead of the process of deleting the graphic corresponding to the time t1 and the graphic corresponding to the time t2 on the screen Sc. May be.

  The output unit 35 also includes the measurement value Me indicated by the sensor data X, the measurement value Me indicated by the supplement data Y, and the measurement value Me indicated by the complement data Y when the skip count S exceeds the maximum skip count Smax. You may perform the process which displays at least any two in the same aspect.

  Further, the output unit 35 may be configured to perform processing for displaying the screen Sc on a monitor or the like of a display device different from the management device 102 of its own. In addition, when receiving an abnormality notification from the processing unit 32, the output unit 35, instead of performing a process of displaying a screen, outputs a notification to a terminal device or the like, outputs an alarm sound, or a revolving lamp provided in the target facility It may be configured to output such as rotating.

[Flow of operation]
Each device in the sensor system 201 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following flowchart from a storage device such as a memory (not shown). . Each of the programs of the plurality of apparatuses can be installed from the outside. The programs of the plurality of apparatuses are distributed while being stored in a recording medium.

(Operation flow of wireless terminal device)
FIG. 9 is a flowchart showing an example of the operation flow of the wireless terminal device according to the embodiment of the present invention.

  Referring to FIG. 9, first, when the wireless terminal device 101 is turned on, the wireless terminal device 101 measures one or a plurality of measurement objects (step S11).

  Next, for each type of measurement result, the wireless terminal device 101 calculates an upper limit threshold Th1 and a lower limit threshold Th2 of the measurement value Me based on the measurement value Me and the determination criterion information held by itself (step S12).

  Next, as a first determination, the wireless terminal device 101 confirms, for each type of measurement result, whether or not the measurement value Me is not less than the lower limit threshold Th2 and not more than the upper limit threshold Th1 (Th2 ≦ Me ≦ Th1) ( Step S13).

  Next, the wireless terminal device 101 corresponds to the case where all the measured values Me obtained in step S11 are not less than the lower limit threshold Th2 and not more than the upper limit threshold Th1 (“YES” in step S13), that is, all the sensor data X correspond. When the predetermined condition is satisfied, the second determination is performed. That is, the wireless terminal device 101 confirms whether or not the skip count S held by the radio terminal device 101 is less than the maximum skip count Smax (step S14).

  Next, when the skip count S is less than the maximum skip count Smax (“YES” in step S14), the wireless terminal device 101 determines not to transmit the sensor data X (step S15). Then, the wireless terminal device 101 increments the skip count S held by itself by one (step S16).

  On the other hand, when at least one measurement value Me is outside the range of the lower limit threshold Th2 or more and the upper limit threshold Th1 or less (“NO” in step S13), the wireless terminal device 101, that is, at least one sensor data X corresponds to the predetermined value If the condition is not satisfied, or if the skip count S is equal to or greater than the maximum skip count Smax (“NO” in step S14), it is determined to transmit the sensor data X (step S17).

  Next, the wireless terminal device 101 activates its own communication unit 12 (step S18), and the communication unit 12 transmits all sensor data X to the management device 102 via the network 161 (step S19).

  Next, the wireless terminal device 101 stops the operation of its own communication unit 12 (step S20), and resets the skip count S held by itself (step S21).

(Management device operation flow)
FIG. 10 is a flowchart showing an example of the operation flow of the management apparatus according to the embodiment of the present invention.

  Referring to FIG. 10, first, when the management apparatus 102 receives sensor data X from the wireless terminal apparatus 101 at time t0 (step S31), for example, the management apparatus 102 stores the sensor data X in its own temporary storage unit 33 ( Step S32).

  Next, the management apparatus 102 stores the sensor data X in its own storage unit 34 (step S33).

  Next, the management apparatus 102 resets the skip count S stored in the temporary storage unit 33 (step S34).

  Next, the management apparatus 102, based on the communication cycle T indicated by the sensor data X stored in the temporary storage unit 33, at the time t1 when the time of the communication cycle T has elapsed from the time t0 when the sensor data X is received. Then, it is confirmed whether or not new sensor data X has arrived (step S35).

  Next, when the new sensor data X arrives and the sensor data X is received (“YES” in step S35), the management apparatus 102 performs the operation after step S32 again.

  On the other hand, if new sensor data X has not arrived (“NO” in step S35), the management apparatus 102 creates complementary data Y and saves the created complementary data Y in the temporary storage unit 33 ( Step S36).

  Next, the management apparatus 102 increments the skip count S stored in the temporary storage unit 33 by one (step S37).

  Next, the management apparatus 102 checks whether or not the skip count S after counting up is equal to or less than the maximum skip count Smax stored in the temporary storage unit 33 (step S38).

  Next, when the skip count S is equal to or less than the maximum skip count Smax (“YES” in step S38), the management apparatus 102 obtains new sensor data X at time t2 when the time of the communication cycle T has elapsed from time t1. It is confirmed whether or not it has arrived (step S39).

  Next, when the new sensor data X has not arrived (“NO” in step S39), the management apparatus 102 performs the operations in and after step S36 again.

  On the other hand, when new sensor data X arrives and the sensor data X is received (“YES” in step S39), the management apparatus 102 stores the sensor data X in its own temporary storage unit 33 (step S40). ).

  Next, the management apparatus 102 stores the complementary data Y and the sensor data X stored in its own temporary storage unit 33 in its own storage unit 34 (step S41).

  Next, the management apparatus 102 resets the skip count S stored in the temporary storage unit 33 (step S42).

  If the skip count S exceeds the maximum skip count Smax in step S38 (“NO” in step S38), the management apparatus 102 deletes the complementary data Y stored in its own temporary storage unit 33. (Step S43).

  Next, the management device 102 resets the skip count S stored in its own temporary storage unit 33 and notifies the wireless terminal device 101 that an abnormality has occurred (step S44).

  By the way, according to the apparatus as described in Patent Document 1 described above, it is possible to detect an abnormality that has occurred in the facility without human intervention. In addition, in such a device, it is desirable that detection data is transmitted by wireless communication in order to avoid reconfiguration of a production line in a factory. Furthermore, for the same reason, it is desirable that the device operates on a battery type that does not require a power line.

  However, when wireless communication is always performed, power consumption and communication load increase. Therefore, it is conceivable to restrict the transmission of the detection data. In this case, the reception side intentionally restricts the transmission of the detection data, or the detection data of the detection data is unintentionally due to an abnormality in the transmission side device. Cannot distinguish whether transmission is restricted.

  On the other hand, the sensor system 201 according to the embodiment of the present invention receives the wireless terminal device 101 that wirelessly transmits the sensor data X including the measurement value Me, and the sensor data X transmitted from the wireless terminal device 101. A management apparatus 102. The wireless terminal device 101 performs a determination process for determining whether or not to transmit the sensor data X including the measurement value Me at a predetermined communication cycle T. The determination process includes a first determination that determines whether the relationship between the sensor data X and the reference data satisfies a predetermined condition, a skip count S that is determined not to transmit the sensor data X in the determination process, and a predetermined maximum skip count. And a second determination for comparing with Smax. Further, in the determination process, the wireless terminal device 101 determines whether to transmit the sensor data X based on the result of the first determination and the result of the second determination. The wireless terminal device 101 resets the skip count S when it is determined to transmit the sensor data X, and increases the skip count S when it is determined not to transmit the sensor data X.

  With such a configuration, it is possible to limit the number of transmissions of the sensor data X, thereby realizing power saving and a reduction in communication load. Moreover, in the management apparatus 102, when the frequency | count that the sensor data X does not arrive continuously exceeds the maximum skip frequency | count Smax, it can be judged that the radio | wireless terminal apparatus 101 has abnormality. Therefore, appropriate data management can be performed.

  Further, in the sensor system 201 according to the embodiment of the present invention, the reference data is the sensor data X transmitted last time by the wireless terminal device 101.

  With such a configuration, since it is possible to determine whether or not to transmit the sensor data X based on the change amount of the measurement value Me, it is possible to more appropriately limit the number of transmissions of the sensor data X.

  In the sensor system 201 according to the embodiment of the present invention, the wireless terminal device 101 acquires a plurality of sensor data X each including a plurality of types of measurement values Me, and performs a first determination for each acquired sensor data X. Do. Further, the predetermined condition can be set for each type. Furthermore, when there is at least one type of sensor data X that does not satisfy the corresponding predetermined condition in the first determination, the wireless terminal device 101 determines to transmit a plurality of sensor data X.

  With such a configuration, even when there are a plurality of types of measurement targets, it is possible to appropriately determine whether or not to transmit a plurality of sensor data X.

  Further, in the sensor system 201 according to the embodiment of the present invention, the wireless terminal device 101 acquires a plurality of sensor data X each including a plurality of types of measurement values Me, a determination process for each acquired sensor data X, and Reset or increase skip count S. Further, the maximum skip count Smax is common among a plurality of sensor data X each including a plurality of types of measurement values Me.

  With such a configuration, even when there are a plurality of types of measurement objects, the second determination can be performed with a simple process.

  Further, in the sensor system 201 according to the embodiment of the present invention, the communication cycle T is common among a plurality of sensor data X each including a plurality of types of measurement values Me.

  With such a configuration, a plurality of sensor data X can be transmitted together, so that power consumption and communication load can be further reduced.

  In the sensor system 201 according to the embodiment of the present invention, the sensor data X includes at least the ID of the wireless terminal device 101, the measured value Me, and the communication cycle T. If the management apparatus 102 does not receive new sensor data X even after the time of the communication cycle T has elapsed since the previous sensor data X was received, the management apparatus 102 converts the sensor data X to new sensor data X based on the previously received sensor data X. Corresponding complementary data Y is generated.

  With such a configuration, even if the sensor data X is not transmitted, data loss can be prevented in the management apparatus 102.

  In the sensor system 201 according to the embodiment of the present invention, the sensor data X further includes the maximum skip count Smax and determination criterion information. In addition, the management apparatus 102 generates complementary data Y based on the determination data of the sensor data X received last time and the sensor data X received this time.

  With such a configuration, the management device 102 can predict the measurement value Me included in the sensor data X not transmitted by the wireless terminal device 101 by grasping the predetermined condition indicated by the determination criterion information. More appropriate complementary data Y corresponding to the sensor data X can be generated.

  In the sensor system 201 according to the embodiment of the present invention, the sensor data X includes at least the ID of the wireless terminal device 101, the measured value Me, the communication cycle T, and the maximum skip count Smax. The management apparatus 102 performs a predetermined output when new sensor data X is not received even after the time of the maximum skip count Smax times the communication cycle T has elapsed since the previous sensor data X was received.

  With such a configuration, for example, the user can easily recognize that an abnormality has occurred in the wireless terminal device 101 by checking the output result.

  Further, in the sensor system 201 according to the embodiment of the present invention, the management apparatus 102 performs processing for displaying the measured value Me indicated by the received sensor data X and the measured value Me indicated by the complementary data Y in different modes. .

  With such a configuration, the user can easily distinguish between the measured value Me indicated by the sensor data X and the measured value Me indicated by the complementary data Y by confirming the display mode of the measured value Me.

  Further, in the sensor system 201 according to the embodiment of the present invention, even if the management apparatus 102 receives the previous sensor data X, the new sensor data X even if the maximum skip count Smax times of the communication cycle T has elapsed. Is not received, the process of deleting the display of the complementary data Y is performed.

  With such a configuration, when an abnormality occurs in the wireless terminal device 101, it is possible to avoid displaying the measurement value Me with low reliability.

  Further, in the sensor system 201 according to the embodiment of the present invention, even if the management apparatus 102 receives the previous sensor data X, the new sensor data X even if the maximum skip count Smax times of the communication cycle T has elapsed. Is not received, a process of displaying the complementary data Y in a further different manner is performed.

  With such a configuration, the user can easily recognize that an abnormality has occurred in the wireless terminal device 101 by confirming the display mode of the measurement value Me.

  Moreover, in the wireless terminal device 101 according to the embodiment of the present invention, the determination unit 21 performs a determination process for determining whether or not to wirelessly transmit the sensor data X including the measurement value Me at a predetermined communication cycle T. In addition, when the determination unit 21 determines to transmit the sensor data X, the communication unit 12 transmits the sensor data X. The determination process includes a first determination that determines whether the relationship between the sensor data X and the reference data satisfies a predetermined condition, a skip count S that is determined not to transmit the sensor data X in the determination process, and a predetermined maximum skip count. And a second determination for comparing with Smax. The determination unit 21 determines whether or not to transmit the sensor data X based on the first determination result and the second determination result in the determination process. The determination unit 21 resets the skip count S when it is determined to transmit the sensor data X, and increases the skip count S when it is determined not to transmit the sensor data X.

  With such a configuration, it is possible to limit the number of transmissions of the sensor data X, thereby realizing power saving and a reduction in communication load. Further, in the management device 102 on the receiving side of the sensor data X, when the number of times the sensor data X does not arrive continuously exceeds the maximum skip count Smax, it can be determined that the wireless terminal device 101 is abnormal. Therefore, appropriate data management can be performed.

  In the management device 102 according to the embodiment of the present invention, the reception unit 31 receives the sensor data X including at least the ID of the wireless terminal device 101 that is the transmission source of the sensor data X, the measured value Me, and the communication cycle T. To do. Further, when the processing unit 32 does not receive new sensor data X even after the time of the communication cycle T has elapsed since the reception unit 31 received the previous sensor data X, the sensor data previously received by the reception unit 31 is received. Based on X, complementary data Y corresponding to new sensor data X is generated.

  With such a configuration, it is possible to prevent data loss in the management apparatus 102 even when the sensor data X is not transmitted after limiting the number of times the sensor data X is transmitted. Therefore, appropriate data management can be performed.

  Note that some or all of the functions of the management apparatus 102 according to the embodiment of the present invention may be provided by cloud computing. That is, the management apparatus 102 according to the embodiment of the present invention may be configured by a plurality of cloud operator servers and the like.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The above description includes the following features.

[Appendix 1]
A wireless terminal device that wirelessly transmits sensor data including sensor measurement results;
A management device that receives the sensor data transmitted from the wireless terminal device;
The wireless terminal device performs a determination process for determining whether to transmit the sensor data at a predetermined communication cycle,
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the determination process, the wireless terminal device determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination,
The wireless terminal device resets the skip count when it is determined to transmit the sensor data, and increases the skip count when it is determined not to transmit the sensor data,
When the wireless terminal device determines to transmit the sensor data, it activates its own communication unit to transmit the sensor data from the communication unit, stops the operation of the communication unit after a predetermined time,
When the skip count exceeds the maximum skip count, the management device determines that an abnormality has occurred in the wireless terminal device, and notifies that the abnormality has occurred.

[Appendix 2]
A determination unit that performs a determination process in a predetermined communication cycle to determine whether to wirelessly transmit sensor data including a sensor measurement result;
A communication unit that transmits the sensor data when the determination unit determines to transmit the sensor data;
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the determination process, the determination unit determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination,
The determination unit resets the skip count when it is determined to transmit the sensor data, and increases the skip count when it is determined not to transmit the sensor data,
When the determination unit determines to transmit the sensor data, it activates the communication unit, and outputs the sensor data to the communication unit,
When the communication unit receives the sensor data from the determination unit, the communication unit transmits the sensor data,
The determination unit is a wireless terminal device that stops the operation of the communication unit after a predetermined time has elapsed from the output timing of the sensor data.

[Appendix 3]
A receiving unit for receiving sensor data including at least identification information, a measurement result, and a communication cycle of the sensor;
If the sensor does not receive new sensor data even after the time of the communication cycle has elapsed since the reception of the sensor data last time in the reception unit, a new one is generated based on the sensor data received last time by the reception unit. A processing unit that generates complementary data corresponding to the sensor data,
When the number of times the sensor data is not continuously received exceeds a predetermined maximum skip count, the processing unit determines that an abnormality has occurred in the wireless terminal device that is the transmission source of the sensor data, and the abnormality has occurred. A management device that provides notification that it has occurred.

DESCRIPTION OF SYMBOLS 11 Processing part 12 Communication part 21 Determination part 22 Measuring part (sensor)
DESCRIPTION OF SYMBOLS 23 Setting part 24 Memory | storage part 31 Reception part 33 Temporary preservation | save part 34 Storage part 35 Output part 101 Wireless terminal device 102 Management apparatus 161 Network 201 Sensor system

Claims (18)

A wireless terminal device that wirelessly transmits sensor data including sensor measurement results;
A management device that receives the sensor data transmitted from the wireless terminal device;
The wireless terminal device performs a determination process for determining whether to transmit the sensor data at a predetermined communication cycle,
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the determination process, the wireless terminal device determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination,
The wireless terminal device resets the skip count when it is determined to transmit the sensor data, and increases the skip count when it is determined not to transmit the sensor data.   The sensor system according to claim 1, wherein the reference data is the sensor data previously transmitted by the wireless terminal device. The wireless terminal device acquires a plurality of sensor data each including measurement results of a plurality of types of sensors, performs the first determination for each acquired sensor data,
The predetermined condition can be set for each type,
The wireless terminal device according to claim 1, wherein the wireless terminal device determines to transmit the plurality of sensor data when there is at least one type of sensor data that does not satisfy the predetermined condition corresponding to the first determination. Sensor system. The wireless terminal device acquires a plurality of sensor data each including measurement results of a plurality of types of sensors, performs the determination process for each acquired sensor data, and resets or increases the number of skips,
The sensor system according to any one of claims 1 to 3, wherein the maximum number of skips is common in each of the types. The wireless terminal device acquires a plurality of sensor data including measurement results of a plurality of types of sensors, performs the determination process for each acquired sensor data,
The sensor system according to any one of claims 1 to 4, wherein the communication cycle is common to each of the types. The sensor data includes at least identification information, a measurement result, and the communication cycle of the sensor,
If the management device does not receive the new sensor data even after the time of the communication cycle has elapsed since the previous reception of the sensor data, the management device converts the sensor data into new sensor data based on the previous received sensor data. The sensor system according to any one of claims 1 to 5, wherein corresponding sensor data is generated. The sensor data further includes determination criteria information regarding the maximum skip count and the predetermined condition,
The sensor system according to claim 6, wherein the management device generates the complementary data based on the sensor data received last time and the determination criterion information of the sensor data received this time. The sensor data includes at least identification information, measurement results, the communication cycle, and the maximum skip count of the sensor,
The management device performs a predetermined output when no new sensor data is received even after the time of the maximum skip count times the communication cycle has elapsed since the previous reception of the sensor data. The sensor system according to claim 7.   The sensor system according to claim 6 or 7, wherein the management device performs a process of displaying the measurement result indicated by the received sensor data and the measurement result indicated by the complementary data in different modes. The sensor data includes at least identification information, measurement results, the communication cycle, and the maximum skip count of the sensor,
If the management device does not receive the new sensor data even after the maximum skip count times of the communication period has elapsed since the previous reception of the sensor data, the management device deletes the display of the complementary data. The sensor system according to claim 9, which is performed. The sensor data includes at least identification information, measurement results, the communication cycle, and the maximum skip count of the sensor,
If the management device does not receive the new sensor data even after the maximum skip count times the communication cycle has elapsed since the previous reception of the sensor data, the management device displays the complementary data in a further different manner. The sensor system according to claim 9 which performs processing. A determination unit that performs a determination process in a predetermined communication cycle to determine whether to wirelessly transmit sensor data including a sensor measurement result;
A communication unit that transmits the sensor data when the determination unit determines to transmit the sensor data;
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the determination process, the determination unit determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination,
The determination unit is a wireless terminal device that resets the skip count when it is determined that the sensor data is transmitted, and increases the skip count when it is determined that the sensor data is not transmitted. A receiving unit for receiving sensor data including at least identification information, a measurement result, and a communication cycle of the sensor;
If the sensor does not receive new sensor data even after the time of the communication cycle has elapsed since the reception of the sensor data last time in the reception unit, a new one is generated based on the sensor data received last time by the reception unit. A management apparatus comprising: a processing unit that generates complementary data corresponding to the sensor data. A management method in a sensor system comprising: a wireless terminal device that wirelessly transmits sensor data including a sensor measurement result; and a management device that receives the sensor data transmitted from the wireless terminal device,
A step of performing a determination process in which the wireless terminal device determines whether to transmit the sensor data at a predetermined communication cycle;
Including a step of transmitting the sensor data to the management device when the wireless terminal device determines to transmit the sensor data;
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the step of performing the determination process, the wireless terminal device resets the skip count when it is determined that the sensor data is transmitted, and increases the skip count when it is determined that the sensor data is not transmitted. Method. A management method in a wireless terminal device,
Performing a determination process for determining whether or not to wirelessly transmit sensor data including a sensor measurement result at a predetermined communication cycle;
If it is determined to transmit the sensor data, the step of transmitting the sensor data,
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
The management method of resetting the skip count when it is determined that the sensor data is to be transmitted and increasing the skip count when it is determined that the sensor data is not to be transmitted in the step of performing the determination process. A management method in a management device,
Receiving sensor data including at least identification information, a measurement result, and a communication cycle of the sensor;
If new sensor data is not received even after the time of the communication cycle has elapsed since the previous reception of the sensor data, complementary data corresponding to the new sensor data is obtained based on the previously received sensor data. And a generating method. A management program used in a wireless terminal device,
Computer
A determination unit that performs a determination process in a predetermined communication cycle to determine whether to wirelessly transmit sensor data including a sensor measurement result;
A communication unit that transmits the sensor data when the determination unit determines to transmit the sensor data;
As a program to function as
The determination process includes a first determination that determines whether a relationship between the sensor data and reference data satisfies a predetermined condition, a skip count that is determined not to transmit the sensor data in the determination process, and a predetermined maximum skip. A second determination comparing the number of times,
In the determination process, the determination unit determines whether to transmit the sensor data based on the result of the first determination and the result of the second determination,
The determination program resets the skip count when it is determined to transmit the sensor data, and increases the skip count when it is determined that the sensor data is not transmitted. A management program used in a management device,
Computer
A receiving unit for receiving sensor data including at least identification information, a measurement result, and a communication cycle of the sensor;
If the sensor does not receive new sensor data even after the time of the communication cycle has elapsed since the reception of the sensor data last time in the reception unit, a new one is generated based on the sensor data received last time by the reception unit. A processing unit for generating complementary data corresponding to the sensor data;
Management program to function as

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