JP2007184898A - Radio detector and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently detect surreptitious photographing and eavesdropping performed on the basis of a radio signal exchanged in various frequencies. <P>SOLUTION: Since this radio detector 1 sequentially switches frequencies of a radio signal received by an RF module 10 according to a command from a microcomputer 30 (S110), the microcomputer 30 side can efficiently check whether a signal of the frequency is received (S120 to S140). When the signal is actually received, it can be notified that the signal is actually received (S180). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wireless detector that detects a wireless signal.

In recent years, voyeurism and eavesdropping by devices that transmit peripheral images and sounds by wireless signals have become social problems.
As a technique for preventing such voyeurism and eavesdropping, for example, electric field strength data is received from each of one or more receivers, and the electric field strength indicated by the electric field strength data is defined as the electric field strength in the absence of eavesdropping radio waves. A technique has been proposed in which the presence or absence of eavesdropping radio waves is monitored by comparison (see Patent Document 1).
JP 2003-266992 A

  However, since devices used for voyeurism and eavesdropping as described above exchange radio signals at various frequencies, even with the technology described above, devices that exchange radio signals at specific frequencies are more efficient. There is a problem that it is difficult to discover it.

  The present invention has been made to solve such problems, and an object thereof is to provide a technique for efficiently detecting voyeurism and eavesdropping.

  In order to solve the above-described problem, the wireless detector according to claim 1 is configured such that, for a receiving unit capable of receiving wireless signals of a plurality of types of frequencies, the frequency of the wireless signal receivable by the receiving unit is set to a plurality of types of frequencies. Frequency switching means that sequentially switches to each other, and notifying means for notifying about the frequency switched by the frequency switching means when a radio signal of the frequency is received by the receiving unit. .

  According to the wireless detector configured as described above, since the frequency of the wireless signal received by the receiving unit is sequentially switched by the frequency switching unit, it is efficiently checked whether or not the signal of the frequency is received. be able to. And when it is actually received, it can be notified by the notification means. This notification can assist the user in efficiently discovering voyeurism and eavesdropping.

  The notification means in this configuration is not particularly limited as long as it can notify that a predetermined radio signal has been received. For example, it can be considered that a notification is made by turning on a lamp or LED attached to the wireless detector body. It is also possible to adopt a configuration in which notification is performed by transmitting predetermined information to another device capable of data communication with the wireless detector.

  Moreover, in the said structure, what is necessary is just to set it as the structure which alert | reports immediately by a alerting | reporting means, when the radio signal of the frequency switched by the frequency switching means is received. However, when the radio signal of that frequency is just a carrier wave, it is desirable to make a notification only when a signal that can be the basis of voyeurism or eavesdropping is modulated.

  For this purpose, for example, as described in claim 2, when a radio signal having the frequency is received by the receiver for the frequency switched by the frequency switching unit, the received radio signal is detected. And detecting means for performing notification when the signal obtained by detection by the detecting means is a signal indicating a predetermined notification target. It is good to be.

  With this configuration, when a radio signal is received, notification can be performed only when a signal having a frequency to be notified is modulated there. Therefore, by setting a signal of a specific frequency indicating a video signal or an audio signal that can be a basis for voyeurism or eavesdropping as a signal indicating a notification target, a signal that can be a basis for voyeurism or eavesdropping is modulated on a wireless signal. Notification can be performed only when it can be said.

  Further, the notification means described above may be configured to perform notification regardless of the signal level when a wireless signal is received. However, if the signal level is low, there is a high possibility that images and sounds exchanged by radio signals will not be obtained accurately. Therefore, it may be possible not to notify in such a case.

  For this purpose, for example, as described in claim 3, when the radio signal is received by the receiving unit, the radio signal is provided with level detection means for detecting a signal level of the received radio signal, It is conceivable that the notification means is configured to notify when the signal level detected by the level detection means is equal to or higher than a predetermined threshold value.

  According to this configuration, the notification by the notification unit can be performed only when the signal level of the radio signal received by the receiving unit is equal to or higher than a predetermined threshold value. Therefore, by setting a level that can accurately obtain images and sounds exchanged by wireless signals as the threshold value, there is a high possibility that images and sounds will not be obtained accurately (that is, It is possible to prevent unnecessary notification based on radio signals (possibility of voyeurism and eavesdropping is low).

  Further, the notification means described above may be configured to immediately notify when a wireless signal is received. However, there is a high possibility that such a radio signal suddenly generated due to some trouble is not a signal for exchanging images and sounds. It is done.

  For this purpose, for example, as described in claim 4, when the notifying unit continuously receives the radio signal having the switched frequency in the receiving unit for a predetermined period of time, the notifying unit notifies the fact to that effect. It is conceivable to configure as follows.

  According to this configuration, when a radio signal is received by the receiving unit, notification can be performed only when the reception continues for a predetermined period. For this reason, by setting a period that can sufficiently eliminate suddenly generated signals as the predetermined period, it is unnecessary based on a radio signal that is unlikely to be a signal for exchanging images and sounds. Can be prevented.

  Further, in order to solve the above-described problem, the wireless detector according to claim 5 sequentially switches the frequency of the radio signal that can be received by the receiver with respect to the receiver that can receive radio signals of a plurality of types of frequencies. A frequency switching unit, a level specifying unit for specifying a signal level of a radio signal received by the receiving unit each time the frequency is switched by the frequency switching unit, and a signal level specified by the level specifying unit is a predetermined level. And a notifying means for notifying that when it is equal to or greater than the first threshold value.

  According to the wireless detector configured as described above, since the frequency of the wireless signal received by the receiving unit can be sequentially switched by the frequency switching unit, it is efficiently checked whether or not the signal of those frequencies has been received. can do. When the signal level of the radio signal received by the receiving unit is equal to or higher than the predetermined first threshold value for each frequency to be switched, the notification unit can notify that effect. This notification can assist the user in efficiently discovering voyeurism and eavesdropping.

  The notification means in this configuration is not particularly limited as long as it can notify that a predetermined radio signal has been received. For example, it can be considered that a notification is made by turning on a lamp or LED attached to the wireless detector body. It is also possible to adopt a configuration in which notification is performed by transmitting predetermined information to another device capable of data communication with the wireless detector.

Further, the “first threshold value” that serves as a reference for the notification by the notification means may be set to a signal level that can identify an image or sound exchanged by a wireless signal.
Further, the frequency switching means described above may be configured to switch in any order as long as the frequency of the radio signal is receivable by the receiving unit.

  For example, as described in claim 6, the frequency of the radio signal receivable by the receiving unit may be configured to switch in ascending or descending order to each frequency when a predetermined frequency band is divided into a plurality of frequencies. Conceivable.

  If comprised in this way, it can be checked in an ascending order or a descending order whether each of the radio signal of multiple types of frequency is received with the signal level more than a 1st threshold value.

  As described above, the configuration in which the check is performed in ascending order or descending order is configured such that the notification by the notification unit is performed every time the signal level specified by the level specifying unit exceeds the first threshold value. Alternatively, the notification by the notification unit may be performed according to the number of times that the signal level specified by the level specifying unit becomes equal to or higher than the first threshold value.

  In particular, in the latter case, if the number of times that the signal level specified by the level specifying means is equal to or higher than the first threshold reaches the predetermined number in the entire predetermined frequency band, the first step is performed. What is necessary is just to comprise so that alerting | reporting may be performed irrespective of whether the frequency which became more than a threshold value is a continuous frequency.

  For this purpose, in the process of sequentially switching the frequency by the frequency switching means, the number of times that the signal level specified by the level specifying means for each radio signal of the frequency to be switched becomes equal to or higher than the first threshold value is counted. A number of times counting means, and when the number of times counted by the counting means has reached a predetermined number, the notifying means notifies that the signal level is equal to or higher than a first threshold value. What is necessary is just to comprise.

  If comprised in this way, the signal level of a radio signal is more than a 1st threshold value when the frequency | count that the signal level specified by the level specification means became more than a 1st threshold value reaches | attains predetermined number of times. This can be notified.

  In addition, the notification by the notification means may be configured to be performed only when the frequency that is equal to or higher than the first threshold is a continuous frequency. 7 may be configured.

  According to a seventh aspect of the present invention, in the process in which the frequency switching means sequentially switches the frequency, the signal level specified by the level specifying means for each radio signal at each frequency to be switched is continuously the first level. A number-of-times counting means for counting the number of times the threshold value is exceeded, and when the number of times counted by the counting means has reached a predetermined number, the notification means has a signal level of a first threshold value. Notify that this is the case.

  According to this configuration, when the number of times that the signal level specified by the level specifying unit is equal to or greater than the first threshold value continuously becomes the predetermined number of times, the signal level of the radio signal is the first threshold value. It can notify that it is the above.

  Further, in this configuration, the counting means counts the number of times that the signal level specified by the level specifying means is continuously equal to or higher than the first threshold value. Thus, even when the signal level is slightly smaller than the first threshold value, the counting by the counting means is performed again. As a result, there is a possibility that the fact that the signal level of the radio signal in the predetermined frequency band is originally equal to or higher than the first threshold cannot be notified.

In order to prevent such a situation, the above configuration may be configured as a wireless detector according to claim 8, for example.
In the wireless detector, the number counting unit counts the number of times when the signal level specified by the level specifying unit is equal to or higher than the first threshold value in the process of the frequency switching unit sequentially switching the frequency. When the signal level is less than the first threshold and greater than or equal to the second threshold smaller than the first threshold, the number of times is not counted, and the signal level is not less than the second threshold. When the number is less than the value, the count value of the number of times is returned to the initial value.

  If comprised in this way, even if the signal level specified by the level specifying means is a signal level smaller than the first threshold value, the signal level is not less than the second threshold value smaller than the first threshold value. If so, the counting by the counting means will not be redone.

  Therefore, by setting a signal level that can be smaller than the first threshold value due to some disturbance as the second threshold value, the influence of such a disturbance is suppressed, and the radio signal in a predetermined frequency band It can be prevented that it is impossible to notify that the signal level is equal to or higher than the first threshold value.

  In addition, as described above, in the configuration in which the receiving unit is switched over a predetermined frequency band, the switching may be performed only for a single frequency band, but for each of a plurality of frequency bands, You may comprise so that switching may be implemented.

For this purpose, the configuration according to any one of claims 6 to 8 may be configured like a wireless detector according to claim 9, for example.
In this wireless detector, for each of a plurality of frequency bands receivable by the receiving unit, frequency switching over the frequency band by the frequency switching unit, specification of the signal level by the level specifying unit, and notification by the notification unit are repeated. It has a repeating means.

  With this configuration, for each of a plurality of frequency bands, not only switching to each frequency when the frequency band is divided into a plurality of frequencies, but also the signal level specification and notification by the notification means can be repeatedly performed. .

  The “plurality of frequency bands” in this configuration may be a frequency band in which some frequencies overlap each other, or may be a large frequency band where no frequencies overlap at all.

  A program according to claim 10 is a program for causing a computer system to execute various processing procedures for causing all of the means according to any one of claims 1 to 9 to function.

A computer system controlled by this program can constitute a part of the wireless detector according to any one of claims 1 to 9.
Such a program is provided to a wireless detector and a user who uses the wireless detector via various recording media and communication lines.

Embodiments of the present invention will be described below with reference to the drawings.
(1) First Embodiment (1-1) Overall Configuration As shown in FIG. 1, the wireless detector 1 includes an RF module 10, a filter 20, a microcomputer (microcomputer) 30, an alarm LED 42, a power LED 44, and an output circuit 50. , A communication unit 60, a setting switch (SW) 70, a power supply circuit 80, and the like.

  The RF module 10 is instructed from the microcomputer 30 among the radio signals received by the receiving unit 110 and the receiving unit 110 that receive radio signals in a predetermined frequency band (in the present embodiment, 960 MHz to 2450 MHz) via the antenna. A channel selection unit 120 that selectively outputs (selects) frequency components, an RSSI (Recieving Signal Strength Indicator) output circuit 130 that detects a signal level (electric field strength) of a signal output from the channel selection unit 120, and an output from the channel selection unit 120 And a detection unit 140 for detecting a signal to be detected.

  The filter 20 is a filter that passes a frequency band (15.75 kHz in the present embodiment) corresponding to a specific video signal among the signals detected by the detection unit 140.

The microcomputer 30 controls the operation of the entire wireless detector 1 according to a program stored in a built-in memory.
The alarm LED 42 is an LED that is turned on or off in response to a command from the microcomputer 30, and the power LED 44 is an LED that is turned on when the wireless detector 1 is activated.

The output circuit 50 receives an instruction from the microcomputer 30 and controls the output of a notification signal to the outside of the wireless detector 1 (external warning device 200).
The communication unit 60 controls data communication between the wireless detector 1 and another device capable of data communication.

The setting switch 70 is a switch operated when updating the firmware of the microcomputer 30 via the communication unit 60.
The power supply circuit 80 generates power based on an external power supply (AC adapter) and supplies the power to each component of the wireless detector 1.

In addition, this radio | wireless detector 1 is mounted in the housing | casing shown in FIG. Moreover, the general specification of this radio | wireless detector 1 is shown in FIG. 3, FIG. 4, and operation | movement specification is shown in FIG.
(1-2) Processing by Microcomputer Hereinafter, the procedure of processing executed by the microcomputer 30 after the wireless detector 1 is activated will be described with reference to FIG.

  First, out of the frequencies registered in the frequency table, a frequency that is not a processing target in the subsequent processing is selected (S110). In this embodiment, the built-in memory of the microcomputer 30 stores a frequency table in which each of a plurality of frequencies when 960 MHz to 2450 MHz is divided at a predetermined frequency interval is registered. Therefore, in S110, the frequency is selected with reference to the frequency table. After all the frequencies are processed in S110, the next time S110 is performed, all the frequencies are cleared as not processed, and are again processed. The frequency that has not been selected is selected.

  Next, the frequency selected in S110 is scanned (S120). Here, the channel selection unit 120 is notified that the frequency selected in S110 should be selected. Upon receiving this command, the tuning unit 120 selects the frequency selected in S110 in accordance with the command, and outputs a signal of that frequency to the RSSI output circuit 130 and the detection unit 140, respectively.

  Next, it is checked whether or not a signal is output from the RSSI output circuit 130 (S130). If it is determined that no signal is output (S130: NO), the process returns to S110. On the other hand, when it is determined that the output is made (S130: YES), the signal level (electric field strength) of the signal output by the RSSI output circuit 130 is checked (S140). Here, the signal level is checked by setting a signal level at which an image or sound can be accurately obtained (analyzed to identify the image or sound) as a “threshold value”.

  If it is determined in S140 that the signal level of the signal detected by the RSSI output circuit 130 is not equal to or higher than a predetermined threshold value (S140: NO), the process returns to S110.

  On the other hand, if it is determined in S140 that the signal level of the signal output by the RSSI output circuit 130 is equal to or higher than a predetermined threshold (S140: YES), whether or not the notification condition is satisfied is determined. Checked (S150). Here, since S120 performed immediately before, the number of times that S130 and S140 are both determined as “YES” and reach S150 is counted, and the count value has reached a predetermined number (for example, 5 times). Therefore, it is determined that the notification condition is satisfied. Note that the period during which the count value reaches the predetermined number of times is determined as a period that can sufficiently eliminate irrelevant signals suddenly generated due to some factor.

If it is determined in S150 that the notification condition is not satisfied (S150: NO), the process returns to S120.
On the other hand, if it is determined in S150 that the notification condition is satisfied (S150: YES), it is checked whether the option setting is ON after the count value is reset (S160). . In the present embodiment, when the information indicating that the determination based on the signal from the filter 20 is to be stored in the built-in memory of the microcomputer 30, it is determined that the option setting is ON.

If it is determined in S160 that the option setting is ON (S160: YES), it is checked whether or not a signal is input from the filter 20 (S170).
When it is determined in S170 that the signal from the filter 20 is not input (S170: NO), the process returns to S110.

  On the other hand, when it determines with the signal from the filter 20 being input by S170 (S170: YES), alerting | reporting is started (S180). Here, the alarm LED 42 is turned on, and a notification signal is output to the outside of the wireless detector 1 via the output circuit 50, whereby notification is performed. The notification signal is output to the external warning device 200 connected to the wireless detector 1, and the external warning device 200 receiving the notification signal issues a warning according to the specification.

Next, after the notification in S180 is started, it is checked whether or not a predetermined notification time (for example, 10 seconds) has elapsed (S190).
If it is determined in S190 that the predetermined notification time has not elapsed (S190: NO), the process returns to S180 and the notification is continued.

  On the other hand, when it is determined in S190 that the predetermined notification time has elapsed (S190: YES), after waiting for a predetermined standby time (for example, 10 seconds) (S200), the process is performed in S110. Return to.

If it is determined in S160 that the option setting is not ON (S160: NO), the process proceeds to S180 without performing S170, and the subsequent processing is performed.
(1-3) Operation and Effect According to the wireless detector 1 configured as described above, since the frequency of the wireless signal received by the RF module 10 is sequentially switched by a command from the microcomputer 30, the signal of the frequency Can be efficiently checked on the microcomputer 30 side. And when it is actually received, it can be notified in S180 of FIG. This notification can assist the user in efficiently discovering voyeurism and eavesdropping.

  Further, if option setting is made for the wireless detector 1 (“YES” in S160 in FIG. 6), if the wireless signal received by the receiving unit 110 is a carrier wave, there is a notification target there. The presence or absence of a signal whose frequency component is modulated can be checked by the signal output from the filter 20 (S170 in the figure). In the present embodiment, the filter 20 allows a frequency component corresponding to a video signal to pass out of a signal obtained by detecting a radio signal. Can be notified.

  Further, the microcomputer 30 realizes notification through the subsequent processing only when the signal level of the radio signal received by the receiving unit 110 is equal to or higher than the threshold value (“YES” in S140 of FIG. 6). Can do. In the present embodiment, the threshold value is set at a level that is assumed to accurately obtain images and sounds exchanged by wireless signals, so images and sounds cannot be obtained accurately. It is possible to prevent unnecessary notification based on a radio signal having a high possibility (that is, a low possibility of voyeurism and eavesdropping).

Further, even if the reception unit 110 receives a wireless signal, the microcomputer 30 performs subsequent processing only when the reception continues until the notification condition is satisfied (“YES” in S150 of FIG. 6). It is possible to realize notification through the process. In the present embodiment, the period until the notification condition is satisfied is set to a period that can sufficiently eliminate a signal that suddenly occurs due to some factor, so that a signal for exchanging images and sounds is used. It is possible to prevent unnecessary notification from being performed based on a radio signal having a low possibility.
(1-4) Modifications Embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and may take various forms as long as they belong to the technical scope of the present invention. Needless to say, you get.

For example, in the above embodiment, the case where the filter 20 is configured to pass the frequency band corresponding to the video signal has been illustrated. However, the filter 20 may be configured to pass a frequency component of an audio signal that can be a basis for wiretapping.
(1-5) Correspondence with the Present Invention In the embodiment described above, the detection unit 140 is a detection means in the present invention.

6 are frequency switching means in the present invention, S180 in FIG. 6 is notifying means in the present invention, and S130 and S140 in FIG. 6 are level detecting means in the present invention.
(2) Second Embodiment (2-1) Overall Configuration Since the wireless detector 2 in this embodiment is different from the wireless detector 1 in the first embodiment only in some of its constituent elements, the same constituent elements are used. Are denoted by the same reference numerals and detailed description thereof is omitted, and only the differences are described in detail.

  As shown in FIG. 7, the wireless detector 2 includes an RF module 10, a microcomputer 30, an alarm LED 42, a power LED 44, an abnormality LED 46, an output circuit 50, a communication unit 60, a power circuit 80, a media drive 90, and the like. .

  The RF module 10 receives the receiving unit 110, the tuning unit 120, and the RSSI output circuit 130, and also controls the tuning unit 120 according to a command from the microcomputer 30 and notifies the microcomputer 30 of the output result from the RSSI output circuit 130. 150 or the like.

  Each of the alarm LED 42, the power LED 44, and the abnormality LED 46 is composed of a lamp composed of an LED and a drive circuit that drives the lamp, and the lighting and extinguishing of the lamp are controlled by the drive circuit that receives a command from the microcomputer 30.

  The output circuit 50 includes an A-contact output circuit 52 that is a contact (Normal Open) that is closed in a situation where a command from the microcomputer 30 is received, and a contact (Nomal Contact) that is opened in a situation where the command is received. B contact output circuit 54.

  The power supply circuit 80 is provided with a power switch 82, which will be described later. When the power switch 82 is operated, the wireless detector 2 is activated by the start of power supply to each component, and each component is activated. The end of the operation of the wireless detector 2 due to the stop of the power supply is realized.

  The media drive 90 can communicate with an external storage device (memory 92) that can be attached to and detached from the main body of the wireless detector 2 such as a memory card, and a microcomputer stores and reads data from and to the memory 92. Control in response to a command from 30. In this embodiment, the memory 92 is set in the media drive 90 in a state in which a program for causing the microcomputer 30 to execute a wireless detection process described later and setting data referred to in the wireless detection process are stored in advance. Is.

  Here, the “setting file” described above is data including a group management session (Search_Group) and a search bank setting session (Search_Bank), as shown in FIG.

  First, the group management session (Search_Group) includes a variable “Level_sql” indicating a minimum signal level (1 to 255 V / m) to be detected as a signal, a variable “alarm_on_count” indicating a condition for performing a warning in a process described later, and the like. . Among these, a variable “alarm_on_count” is set in advance with a predetermined number (any one of 1 to 10 in this embodiment), and this number is a condition for warning as described later. It will be.

  Further, the search bank setting session (Search_Bank) is configured as a data table in which search information (search bank) related to each predetermined frequency band is registered as a data record corresponding to each frequency band.

  The search information includes a serial number of each search information, a “use bank” indicating whether or not processing to be described later is performed based on the search information, a “lower limit frequency” and an “upper limit frequency” indicating frequency bands, and the RF module 10. "Mode" that indicates the modulation method of the signal to be received or demodulated, "step frequency" that indicates the frequency interval at which the signal is detected in the processing described later, and "warning" that indicates the threshold of the signal level that should be alerted There are “threshold value”, “alarm threshold value” indicating a threshold value of a signal level to be warned, “power OFF” indicating whether or not the power of the wireless detector 2 should be turned off in the processing described later.

  The “alarm threshold value” described above is a signal level that can specify the content (image or sound) of information indicated by the radio signal when a radio signal of a specific frequency is received according to the signal level. It is the value shown. The “warning threshold” described above is a value assumed as the signal level when the alarm threshold signal becomes a small signal level due to some disturbance.

  The wireless detector 2 described above is used in a state of being housed in the housing 300 as shown in FIG. In this housing 300, the front panel 310 receives light from the hole 313 and the power supply LED 44 for exposing the hole 311 for realizing the attachment and detachment of the memory 92 to the media drive 90 to the outside of the housing 300. A hole 315 for guiding the outside of the housing 300, a hole 317 for guiding the light from the abnormal LED 46 to the outside of the housing 300, and a hole 319 for guiding the light from the alarm LED 42 to the outside of the housing 300 are formed.

  Further, the rear panel 320 has a hole 322 for guiding the antenna connected to the receiving unit 110 to the outside of the housing 300, a hole 324 for exposing the connector 62 to the outside of the housing 300, and a connector 56 having the output circuit 50. Are formed in a hole 326 for exposing the connector 84 included in the power supply circuit 80 to the outside of the housing 300.

In addition, the general specification of this radio | wireless detector 2 is shown in FIG. The parameters in this general specification are merely examples belonging to the technical scope of the present invention, and needless to say, each parameter can be changed as long as it belongs to the technical scope.
(2-2) Wireless Detection Processing by Microcomputer Hereinafter, a procedure of wireless detection processing executed by the microcomputer 30 after the wireless detector 2 is activated will be described with reference to FIG. This wireless detection process is executed after reading a program stored in the memory 92 in advance. That is, the microcomputer 30 is set to read the storage area corresponding to the program first in the memory 92 immediately after the activation.

  When the wireless detection process is activated, an initialization process is first performed (s310). Here, after initialization of various variables and parameters, operation check of each LED unit (lighting and blinking in a predetermined pattern), lighting of the lamp in the power LED 44, extinguishing of the lamp in the alarm LED 42 and the abnormal LED 46, etc., the memory 92 Access to the configuration file is performed. Note that the lamps of the alarm LED 42 and the abnormality LED 46 are turned off when the microcomputer 30 instructs each LED to turn off the lamp.

  Next, it is checked whether or not the setting file accessed in s310 is described in an appropriate format (s320). Here, after checking whether or not the setting file is stored in the memory 92, it is checked whether or not the setting file is described in an appropriate format.

  In this s320, when it is determined that the setting file is not stored or the stored setting file is not described in an appropriate format (s320: NO), the lamp of the abnormal LED 46 starts blinking. Later (s330), the wireless detection process is terminated. In this s330, the microcomputer 30 gives a command to the abnormality LED 46 to blink the lamp, and the abnormality LED 46 that has received this command causes the driving circuit to blink the lamp.

  After the abnormality LED 46 starts blinking in this way, the user stores an appropriate setting file in the memory 92 or updates the setting file stored in the memory 92 to one described in an appropriate format. After that, by operating the power switch 82 to restart (restart) the wireless detector 2, the wireless detection process is executed again.

  When it is determined in s320 described above that the setting file is described in an appropriate format (s320: YES), the setting file is read from the memory 92 (s350).

  Next, whether or not unprocessed search information (search information that has not been referred to in subsequent processes) exists in the search information in the “search bank setting session” of the setting file read in s350. Is checked (s360).

  If it is determined in s360 that unprocessed search information exists (s360: YES), search information to be referred to in the subsequent processing is extracted from the unprocessed search information (s370). . Here, search information with the smallest serial number indicated by “used bank” is extracted from search information that is not referred to in the subsequent processing.

Next, the “lower limit frequency” of the search information extracted in s370 is set to the variable F of the initial value “0” (s380).
Next, it is checked whether or not switching to all frequencies based on the search information extracted in s370 has been completed (s390). Here, when the value set in the variable F is the value of the “upper limit frequency” abnormality of the search information extracted in s370, it is determined that the switching to all frequencies has been completed. The

  If it is determined in s390 that switching to all frequencies based on the search information has not been completed (s390: NO), the frequency of the signal to be received is set to the RF module 10 at this time by the variable F. Is commanded to switch to the frequency set in (S400). Upon receiving this command, the RF module 10 selectively outputs the frequency component related to the command by the channel selection unit 120, detects the signal level of the output signal by the RSSI output circuit 130, and then outputs the detection result to the RF control circuit. 150 will notify you.

  In s400, a process of registering the frequency commanded to switch to the log table stored in the memory 92 is also performed. This log table is prepared for each search information (if there is no corresponding search information, it is generated in s400). The detection result for each commanded frequency, the relationship between the signal level indicated by the detection result and the threshold value (hereinafter referred to as “threshold value relationship”), and the notification start / end timing (hereinafter referred to as “notification timing”). And a cumulative value of the signal level indicated by the detection result. In s400, the frequency for which switching is instructed is registered in the corresponding log table.

  Thus, after the frequency switching is instructed in s400, the detection result notified from the RF control circuit 150 is acquired (s410). This detection result indicates the signal level of the signal of the frequency component related to the command by s400.

  Further, in s410, the detection result (indicated by the acquired detection result) is shown as the detection result corresponding to the frequency instructed to be switched in s400 performed immediately before, among the frequencies registered in the corresponding log table. Signal level) is also registered.

Next, the signal level indicated by the detection result acquired in s410 is added to the accumulated value in the corresponding log table (s420).
Next, the signal level indicated by the detection result acquired in s410 is checked (s430, s440), and when it is determined that the signal level is equal to or higher than the “alarm threshold value” (s430: YES, s440). : YES), the variable N of the initial value “0” is incremented (N + 1 → N) (s450). This variable N is for setting the number of times that the signal level is equal to or higher than the “alarm threshold value”. In this s450, “threshold relation” corresponding to the frequency for which switching was commanded in s400 performed immediately before among the “threshold relation” registered in the corresponding log table is “ A process of registering that “the alarm threshold value or more” is also performed.

  When it is determined that the signal level indicated by the detection result is not “warning threshold or higher” (s430: NO), the variable N is initialized (s460). Here, initialization is performed by setting “0” to the variable N. Also, in this s460, “threshold relation” corresponding to the frequency for which switching was commanded in s400 performed immediately before among the “threshold relation” registered in the corresponding log table is “ The process of registering that “below the warning threshold” is also performed.

  When it is determined that the signal level indicated by the detection result is equal to or higher than the “warning threshold” but not higher than the “alarm threshold” (s430: YES, s440: NO), each LED and output The operation state of the circuit 50 is returned to the initial state (s470).

  In s470, first, the microcomputer 30 issues a command to turn off the abnormal LED 46 and the warning LED 42, and each LED unit that has received this command turns off the lamp by the drive circuit. The operating state returns to the initial state. If a command is issued from the microcomputer 30 to each of the A contact output circuit 52 and the B contact output circuit 54, the command is not performed, so that the operation state of each output circuit is returned to the initial state. Return.

  In this s470, among the “threshold relations” registered in the corresponding log table, “threshold relation” corresponding to the frequency for which switching was commanded in s400 performed immediately before is “ Of the processing for registering that “the warning threshold value is greater than or equal to the warning threshold value” and the “warning timing” registered in the log table, the frequency at which switching was commanded in the immediately preceding s400 is set. As the corresponding “warning timing”, a process of registering that “warning has ended” is performed together.

  Thus, after any of s450 to s470 is performed, the value set in the variable N is checked (s480), and the value is set in the “group management session” of the setting file read in s350. When it is determined that the value is greater than or equal to the value of the variable “alarm_on_count” (s480: YES), the operation state of each LED and the output circuit 50 is changed to the notification state (s490), and waiting for a predetermined time (for example, 500 ms) is performed. After being made (s500), the process proceeds to the next process (s510).

  In this s490, first, the microcomputer 30 issues a command to turn on the alarm LED 42, and the alarm LED 42 that has received this command causes the drive circuit to light the lamp, thereby informing the operation state of the alarm LED 42. Change to state. A command is issued from the microcomputer 30 to the A contact output circuit 52 and the B contact output circuit 54 to open or close the contacts in a predetermined pattern, and the A contact output circuit 52 and the B contact output circuit 54 that have received this command. By opening or closing the contacts in a predetermined pattern, the operating state of the output circuit 50 is changed to a notification state. In this way, the user is informed that the signal level of the radio signal is equal to or higher than the alarm threshold value.

  Also, in this s490, “notification is started” as the “notification timing” corresponding to the frequency instructed to be switched in s400 just before the “notification timing” registered in the corresponding log table. And a process of registering the fact that it has been performed.

  If it is determined in s480 described above that the value of the variable N is not equal to or greater than the value of “alarm_on_count” (s480: NO), the process proceeds to the next process (s510) without performing s500 and s510. Will migrate.

  Next, it is checked whether or not “power OFF” in the “search bank setting session” of the search information extracted in s 370 is the content (OFF) indicating that the power should be turned off (s 510).

  If it is determined in s510 that “power OFF” is the content (OFF) indicating that the power should be turned off (s510: YES), the lamp of the power LED 44 starts blinking (s520). Here, the microcomputer 30 instructs the power LED 44 to blink the lamp, and the power LED 44 that has received this command causes the driving circuit to blink the lamp.

  Thus, after the lamp of the power LED 44 starts blinking, it enters a standby state for a predetermined time (for example, 4 s) (s530), and if the user thinks that the wireless detection process should be terminated during this period, The operation of operating the power switch 82 to end the operation of the wireless detector 2 is performed. In this way, when the power switch 82 is operated after the lamp starts blinking in s520 and before a predetermined time elapses, the wireless detection processing is ended as the operation of the wireless detector 2 ends. .

  On the other hand, when the predetermined period has passed without the power switch 82 being operated in s530 described above, the lamp of the power LED 44 that started blinking in s520 is turned off (s540). In s540, the microcomputer 30 issues a command to turn off the lamp to the power LED 44, and the power LED 44 that has received this command turns off the lamp by the drive circuit.

Then, the “step frequency” of the search information extracted in s370 is added to the variable F (s550), and the process returns to s390.
Thus, after the process returns to s390, s390 to s540 are performed based on the frequency set in the variable F at this time until the value of the variable F reaches the upper limit frequency. After the step frequency is added to the process, the process returns to s390. That is, frequency switching is performed in ascending order for each “step frequency” in the frequency band from “lower limit frequency” to “upper limit frequency” of the search information.

  In the process in which s390 to s540 are repeated, notification is performed when the signal level continuously exceeds the alarm threshold value by the value of “alarm_on_count” (see “Alarm ON” in FIG. 12). When the level falls below the alarm threshold value, the notification ends (see “Alarm OFF” in the figure).

  When s390 to s550 are repeated until the value of the variable F reaches the upper limit frequency, it is determined in s390 that the switching to all frequencies based on the search information has been completed (s390: YES), and the process is performed in s360. Return to.

Thus, after the process returns to s360, s370 to s550 are performed for each unprocessed search information, and when all the search information is processed, there is no unprocessed search information in s360. Is determined (s360: NO), and the wireless detection process ends.
(2-3) Actions and Effects According to the wireless detector 2 configured as described above, the following actions and effects can be obtained in addition to the actions and effects obtained by the same configuration as the first embodiment. Can do.

  For example, in the wireless detector 2, since the frequency of the radio signal received by the RF module 10 can be sequentially switched by a command from the microcomputer 30, it is efficiently checked whether or not the signal of those frequencies has been received. be able to. When the signal level of the radio signal received by the receiving unit is equal to or higher than the warning threshold for each frequency to be switched, this can be notified in s490 of FIG. This notification can assist the user in efficiently discovering voyeurism and eavesdropping.

  In the above embodiment, the frequency switching is performed in ascending order for the frequency band from the “lower limit frequency” to the “upper limit frequency” of the search information. Therefore, it is possible to check in ascending order for a specific frequency band whether or not radio signals having a plurality of types of frequencies are received at a signal level equal to or higher than the alarm threshold value.

  In the above embodiment, in the process of repeating s390 to s540 in FIG. 11, a warning can be given when the signal level continuously exceeds the alarm threshold by the value of “alarm_on_count”.

  Further, in s430 to s460 of FIG. 11, the variable N is set when the signal level indicated by the detection result acquired in s410 is equal to or higher than the alarm threshold in the process of sequentially switching the frequency in s400 of FIG. Increment, do not count variable N if the signal level is below the alarm threshold and above the warning threshold, and set variable N if the signal level is below the warning threshold Initializing.

  Therefore, even if the signal level indicated by the detection result acquired in s410 in the same figure is smaller than the alarm threshold, if the signal level is equal to or higher than the warning threshold, the variable N is incremented again. It won't be lost.

  And since this warning threshold is a value assumed as the signal level when the signal of the alarm threshold becomes a small signal level due to some disturbance, the influence of such disturbance is suppressed, It can be prevented that a radio signal in a predetermined frequency band cannot be notified that the signal level is equal to or higher than the alarm threshold.

  In the above embodiment, the setting data includes a plurality of search information. Based on each search information, the frequency is switched according to s400, the detection result is acquired according to s420, and the notification is performed according to s490. Are repeatedly executed (s360 to s550 in the figure).

Therefore, for each of a plurality of types of frequency bands defined in each search information, not only switching to each frequency when the frequency band is divided into a plurality of frequencies, but also specifying the signal level based on the detection result, and the signal level Can be repeatedly implemented to the effect that is equal to or greater than the alarm threshold.
(2-4) Modifications Embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and may take various forms as long as they belong to the technical scope of the present invention. Needless to say, you get.

For example, in the said embodiment, you may comprise so that arbitrary states can be set about the operation state of each LED part and output circuit 50 which are changed in s490 of FIG.
For this purpose, for example, the state data indicating the operation state is stored in the memory 92, the state data is read out, and the operation state indicated by the state data is changed to the operation state to be changed in FIG. The setting process may be configured to be executed as part of the initialization process in step s310 in FIG.

  The “operating state” here refers to whether or not the lamp in the alarm LED 42 is lit, in what pattern the lamp in the alarm LED 42 is lit, whether or not each of the output circuits 50 is operated, the output circuit 50 In what pattern each of them is operated, under what conditions the lamp is turned off, under what conditions the operation of the output circuit 50 is terminated.

  Among these, the lighting or operating pattern means lighting or blinking (including each blinking time) in the case of a lamp, and the output circuit 50 is operated continuously or intermittently. (Including operation time).

  Further, the condition for turning off or terminating the operation is that the signal level is less than the alarm threshold as in the above embodiment, or that a predetermined time has elapsed since the lighting or operation in s490. It is conceivable that a predetermined time has elapsed since the signal level became less than the alarm threshold.

  When such an elapsed time is used as a condition, the predetermined time in s500 is set as an elapsed time until the light is turned off or finished, and after s500, a process for turning off or finished is performed and the process proceeds to s510, or , It may be configured to shift to s470 after waiting for the above-mentioned elapsed time after being determined as “NO” in s450.

In addition, on the assumption that the alarm LED lamp 42 is always turned on in s490, a pattern for operating the output circuit 50 (alarm_on_type), an elapsed time (alarm_on_time) as a condition for ending the operation of the output circuit 50, and the output circuit 50 State data when it is assumed that an elapsed time (alarm_off_time) can be arbitrarily set as a condition for terminating the operation and turning off the lamp (alarm_off_type), and terminating the operation of the output circuit 50 and turning off the lamp . Further, FIG. 13A shows a specific data structure of the state data in this case, and FIG. 13B shows setting patterns (1 to 5) of the respective states.
Alarm_on_type: Whether the pattern for operating the output circuit 50 is continuous (0) or intermittently pulsed (1). Alarm_on_time: ON of a pulse for operating the output circuit 50 Time / alarm_off_type: Whether to turn off and end at elapsed time (0), or turn off and end at s470 (1)
Alarm_off_time: specific elapsed time when extinguishing and ending with elapsed time Also, in the above embodiment, frequency switching for the RF module 10 is commanded by the microcomputer 30 at any time in the wireless detection processing (FIG. 11). What was comprised was illustrated. However, such frequency switching may be configured such that the RF module 10 that has received search information from the microcomputer 30 voluntarily performs and notifies the microcomputer 30 of the detection result each time.

  In this case, after the search information is extracted in s370, as shown in FIG. 14, this search information is output to the RF module 10 (s372), and thereafter, until all detection results based on the search information are acquired. (S374: NO), while waiting for the detection result notified from the RF module 10 at any time (s376), repeatedly performing s410 to s500 based on the detection result notified at any time, all the search information based on the search information If the detection result is acquired (s374: YES), the process may return to s360.

  Further, not only the search information extracted from the setting file but also all the search information in this setting file are output to the RF module 10 at a time, and the search information is extracted on the RF module 10 side. May be.

  Further, in the above-described embodiment, the wireless detection process is illustrated as being terminated when it is determined “NO” in s360. However, when it is determined “NO” in this manner, a process is performed. May be configured to return to s310 or s320, so that a radio signal is always detected.

  Moreover, in the said embodiment, what was comprised so that the radio | wireless detection process (FIG. 11) mentioned above might be performed after reading the program memorize | stored in the memory 92 was illustrated. However, the wireless detection process may be executed according to a program stored in the built-in memory of the microcomputer 30.

  Moreover, in the said embodiment, what was comprised so that the parameter registration to a log table may be performed at any time in s400-s490 of FIG. However, in these processes, each parameter may be output to the outside via the communication unit 60 without being registered in the log table or in combination with the registration in the log table.

  In this case, it may be configured to be able to set in advance whether or not to register in the log table and output the parameter to the outside. Specifically, data indicating whether or not to perform registration and output is stored as execution data in the memory 92, and the execution data is read out and registered in the log table and outside the parameters based on the contents. It can be considered that the process of setting whether or not to perform the output is executed as part of the initialization process in s310 of FIG. In this case, in s400 to s490, either one or both of registration to the log table and output of parameters to the outside may be performed according to the setting contents.

  In the above embodiment, the frequency switching is performed in ascending order for the frequency band from the “lower limit frequency” to the “upper limit frequency” of the search information. However, this frequency switching may be performed in descending order for each “step frequency” in the frequency band from the “upper limit frequency” to the “lower limit frequency”. For this purpose, for example, a rule for describing the search information may be defined so that the frequency band from the “upper limit frequency” to the “lower limit frequency” is performed in descending order for each “step frequency”.

  Further, in the above embodiment, in the process in which s390 to s540 of FIG. 11 are repeated, a warning is performed when the signal level continuously exceeds the alarm threshold by the value of “alarm_on_count”. This is illustrated. However, it may be configured such that a warning is issued when the signal level exceeds the alarm threshold by the value of “alarm_on_count” regardless of whether or not it is continuous.

For this purpose, the variable N is initialized after s370 in FIG. 11 in the same manner as in s440 in FIG. 11 and then the process proceeds to s380. In FIG. It may be configured such that only the process of registering that “threshold relation” is “below the warning threshold value” is performed.
(2-5) Correspondence with the Present Invention In the embodiment described above, the alarm threshold is the first threshold in the present invention, and the warning threshold is the second threshold in the present invention.

  Further, s380, s400, and s550 in FIG. 11 are frequency switching means in the present invention, s410 in FIG. 11 is level specifying means in the present invention, s490 in FIG. 11 is notifying means in the present invention, and s440, s460 in FIG. Is a number counting means in the present invention, and s380 and s390 in the figure are repetition means in the present invention.

The block diagram which shows the whole structure of the radio | wireless detector in 1st Embodiment. Four views showing a housing in which the wireless detector according to the first embodiment is mounted The figure which shows the general specification of the radio | wireless detector in 1st Embodiment (1/2) The figure which shows the general specification of the radio | wireless detector in 1st Embodiment (2/2) The figure which shows the operation | movement specification of the radio | wireless detector in 1st Embodiment. The flowchart which shows the process performed by the microcomputer in 1st Embodiment. The block diagram which shows the whole structure of the radio | wireless detector in 2nd Embodiment. The figure which shows the data structure of the setting file in 2nd Embodiment Three views showing a housing in which the wireless detector according to the second embodiment is mounted The figure which shows the general specification of the radio | wireless detector in 2nd Embodiment. Flowchart showing wireless detection processing in the second embodiment The graph which shows the transition state of the signal level in the radio | wireless detection process in 2nd Embodiment The figure which shows the data structure (a) of the state data in another embodiment, and the table | surface (b) which shows the setting pattern of each state shown by state data The flowchart which shows the radio | wireless detection process in another embodiment

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wireless detector, 2 ... Wireless detector, 10 ... RF module, 20 ... Filter, 30 ... Microcomputer, 42 ... Alarm LED, 44 ... Power supply LED, 46 ... Abnormal LED 50 ... Output circuit, 52 ... A contact output circuit, 54 ... B contact output circuit, 56 ... connector, 60 ... communication unit, 62 ... connector, 70 ... setting switch, 80 ... power supply circuit, 82 ... power switch, 84 ... connector, 90 ... media drive, 92 ... memory, 110 ... Receiving unit, 120 ... channel selection unit, 130 ... RSSI output circuit, 140 ... detection unit, 150 ... RF control circuit, 200 ... external warning device, 300 ... casing, 310 ... front panel, 311 to 319 ... hole, 320 ... back Panel, 322-328 ... hole.

Claims (10)

A frequency switching means that sequentially switches the frequency of a radio signal that can be received by the receiving unit to each of a plurality of types of frequencies for a receiving unit that can receive radio signals of a plurality of types of frequencies,
A radio detector comprising: an informing means for informing, when a radio signal having the frequency is received by the receiving unit for the frequency switched by the frequency switching means. For a frequency switched by the frequency switching means, when a radio signal of the frequency is received by the receiving unit, it comprises a detection means for detecting the received radio signal,
The notification means is configured to notify that when a signal obtained by detection by the detection means is a signal indicating a predetermined notification target. The wireless detector according to claim 1. When the radio signal is received by the receiving unit, the radio signal comprises a level detection means for detecting a signal level of the received radio signal,
The said alerting | reporting means is comprised so that it may alert | report when the signal level detected by the said level detection means is more than a predetermined threshold value, The Claim 1 or Claim 2 characterized by the above-mentioned. Wireless detector. 4. The notification unit according to claim 1, wherein when the radio signal having the switched frequency is continuously received by the reception unit over a predetermined period, the notification unit performs notification to that effect. 5. The wireless detector described in 1. A frequency switching means for sequentially switching the frequency of the radio signal that can be received by the receiver, with respect to the receiver that can receive radio signals of a plurality of types of frequencies,
Each time the frequency is switched by the frequency switching means, level specifying means for specifying the signal level of the radio signal received by the receiving unit;
And a notifying means for notifying that when the signal level specified by the level specifying means is equal to or higher than a predetermined first threshold value. The frequency switching means switches the frequency of the radio signal that can be received by the receiving unit to each frequency when the predetermined frequency band is divided into a plurality of frequencies in ascending order or descending order. Wireless detector. In the process of sequentially switching the frequency by the frequency switching means, the number of times of counting the number of times that the signal level specified by the level specifying means is continuously equal to or higher than the first threshold for each radio signal of the frequency to be switched Equipped with a counting means,
The notifying unit notifies that the signal level is equal to or higher than a first threshold value when the number of times counted by the counting unit has reached a predetermined number. Wireless detector. The number counting means counts the number of times when the signal level specified by the level specifying means is equal to or higher than the first threshold value in the process of the frequency switching means sequentially switching the frequency, and the signal level is the first level. When the number of times is less than one threshold and not less than a second threshold that is less than the first threshold and the signal level is less than the second threshold The wireless detector according to claim 7, wherein the count value of the number of times is returned to an initial value. For each of a plurality of frequency bands that can be received by the receiving unit, a repetition means for repeating frequency switching over the frequency band by the frequency switching means, specification of the signal level by the level specification means, and notification by the notification means is provided. The wireless detector according to any one of claims 6 to 8, wherein:   A program for causing a computer system to execute various processing procedures for causing all of the means according to any one of claims 1 to 9 to function.