KR910000817B1 - Data collecting system - Google Patents

Abstract

No content.

Description

Measurement data aggregation system

1 is a schematic configuration diagram of a measurement aggregation system of the present invention.

2 is a perspective view showing the appearance of an example of a measurement object.

3A and 3B are front and side views showing an instrument with a display unit as an example of a measuring instrument, respectively.

4 is a block diagram showing the schematic configuration of the measuring unit of the control unit and the system base;

5A and 5B are flow charts for explaining the operation of the measurement data aggregation system of the embodiment.

6 is a diagram showing the full measurement data.

7 is a time chart showing a relationship between a data signal of a measurement data text and a frequency modulated signal.

* Explanation of symbols for main parts of the drawings

12: measuring object 20: measuring instrument

22: host device 26: receiver

34: host computer 56: transmission button (instruction means)

60: Q switch (setting means) 64: CPU (editing means)

70: RAM (containment means) 72: transmitter

80: analog to digital converter 88: full measurement data

The present invention relates to a measurement data aggregation system which aggregates a plurality of measuring devices (physical amount or stoichiometric amount) measured by a plurality of measuring devices into one host device.

For example, various product inspections are performed in the inspection process of the product in a factory.

In the case of product inspection of mass production products, plural kinds of inspection devices (measurement devices) are usually arranged along the product inspection line, and each inspection device inspects (measures) the product (measured object) flowing on the product inspection line. . Then, these measurement results are aggregated with a host device to calculate the quality of the product quality level.

Although there are various items in the inspection of the product, for example, considering the case of measuring the size of the product, a measurement value of 10 items or more is obtained according to the shape of the product.

When a worker measures such a measurement item of 10 or more items using an instrument, for example, one worker may measure all of them, but usually, a plurality of employees divide the measurement items. Is measured.

By doing so, the measurement work efficiency can be improved and the probability of occurrence of defects can be reduced.

As described above, in order to measure the size of one product, the processing is not limited to a single measuring instrument, and a plurality of measuring instruments are required.

As described above, the measurements measured with each measuring instrument are aggregated by the host device.

In this case, the counting system has a configuration in which a plurality of measuring devices are connected to a repeater by a cable, and the plurality of repeaters are connected to a host computer of the host apparatus.

Here, a number is assigned to the input connector of each repeater, and this number is recognized by the host computer as an identification number (ID number) of the measuring instrument.

In such an aggregation system, the measurement items and the measurement order of the object to be measured by each measuring instrument are set in the host computer.

Each worker uses the programmed meter to measure the items assigned to him in the set order.

The measurement data is automatically sent from each meter to the host computer via cable and repeater.

The host computer judges the measurement items of the inputted measurement data by the connector number of the repeater and the input order of the measurement data.

In the aggregation system of such a structure, as mentioned above, each measuring device and a host computer are connected by the cable via a repeater.

Therefore, if the measuring instrument is handled by a worker by hand, for example, an instrument, the cable becomes obstructed and the handling operability decreases.

The number of measuring instruments that can be connected to one repeater at one time is not limited.

Therefore, when the number of measuring devices increases, the number of repeaters installed also needs to increase.

As a result, the entire system becomes larger, and equipment costs also increase.

In addition, when measuring one item, if the kind of measuring device connected to a repeater connector is changed, the number of equipment of a repeater can be suppressed. However, the connection switching operation of the connector is complicated, and this method is not practical in consideration of mistakes in the connection and work efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and an object thereof is to provide a measurement data aggregation system which can improve measurement work efficiency and can reliably identify and aggregate measurement data on the host device side. In order to achieve the present invention, the present invention provides a plurality of measuring devices each having a unique identification (ID) information, and each of the predetermined measurement by the measuring means different from each other to measure and wirelessly output the measured value as the ID information, In a measurement data aggregation system having a host device that receives measurement values and ID information wirelessly output from each measurement device and aggregates each measurement value based on the ID information, each measurement device is configured to set the unique ID information. Setting means; Storing means for storing ID information set by said setting means; An analog to digital (A / D) converter for converting the measured value measured by the measuring means into a digital value; Editing means for editing the measured values converted into digital values by the A / D converter means and ID information stored in the storing means into serial measurement data; A transmitter for wirelessly transmitting the full measurement data of the serial edited by the editing means; And instructing means for issuing an instruction for wirelessly transmitting the measurement data telegram of the serial from the transmitter means by initiating the operation of the editing means, wherein the host device is configured to receive the measurement data telegram of the serial output wirelessly. A receiver for; A measurement data aggregation system having a host computer for aggregating measurement values of each measurement data message received by the receiver means based on the ID information is provided.

FIG. 1 is a schematic configuration diagram of the measurement data aggregation system of the embodiment, which is applied to the product inspection line of the factory in this embodiment.

That is, the measured object 12 flows in the direction of the arrow shown along the product inspection line 14.

This measured object 12 is shaped as shown in FIG. 2, for example, and has several measurement items as shown by "A"-"J" in the figure.

Along the product inspection line 14, several measuring stand 16 is arrange | positioned.

One worker 18 is assigned to each measuring table 16. One measuring table 16 is provided with measuring devices 20 such as one or a plurality of measuring instruments, respectively.

In addition, each measuring device 20 is also given an ID number as ID (identification) information for measuring the measuring device 20.

Then, each worker 18 assigned to each measuring table 16 has only one measurement item given to him among the ten measurement items "A" to "J" of the object 12 of FIG. The measurement is performed using the measuring device 20 designated for each measurement item.

In this case, the worker 18 is absent and automatic measurement may be performed by a measuring instrument.

Measurement data by each measuring device 20 is counted in the host device 22.

The host device 22 includes an antenna 24 and a receiver 26 for receiving the full measurement data wirelessly output from each measuring device 20.

In addition, the measurement data received by the receiver 26 includes a control circuit 28 which notifies the buzzer 30 or the error lamp 32 whether or not it is legitimate.

In addition, the host device 22 has a host computer 34 that aggregates and analyzes measurement values for each measurement data.

3A and 3B are front and side views showing an instrument with a display unit as an example of the measuring device 20.

The measuring device 20 is composed of a system base 36 and a control unit 38. The system basic body 36 is a graduation body 40, the slider 42 with a display part, etc.

The control unit 38 is a combination of a 1-chip microcomputer and a receiver, and the control unit 38 is mounted on the rear surface of the slider 42.

A plate-shaped capacitor is embedded in the graduation portion 44 of the graduation body 40 of the system base body 36.

An electrode is mounted inside the slider 42.

Therefore, by moving the slider 42, the electrode perturbates on the capacitor, so that the capacitance of the capacitor taken out of the electrode changes. The capacitance change of the capacitor is the distance between the lower end portion 46 of the scale body 40 and the lower end portion 48 of the slider 42, or the upper end portion 50 of the scale body 40 and the upper end portion of the slider 42 ( 52) is converted into the distance between.

The converted distance, that is, the measured value, is digitally displayed on the display unit 54 using the liquid crystal display element mounted on the surface of the slider 42.

A transmission button 56 is attached to the pressing portion of the slider 42, and a landing screw 58 is screwed on the upper surface of the slider 42.

In addition, a plurality of dip switches 60 for setting ID numbers are mounted on the side of the control unit 38 mounted on the rear surface of the slider 42, and a power switch 62 is mounted on the rear surface of the control unit 38. have.

4 is a block diagram showing a schematic configuration of the measuring unit of the control unit 38 and the instrument main body 36.

The control unit 38 includes a CPU (central processing unit) 64 that executes various arithmetic operations on the measured values input from the system base body 36.

The CPU 64 includes a ROM 68, a RAM 70, a transmitter 72, a transmission button 56, a dip switch 60, and an input / output (I / O) interface 74 through a bus line 66. Is connected.

The ROM 68 stores a control program and the like.

The RAM 70 temporarily stores the ID number and the entered measurement value.

The transmitter 72 wirelessly outputs a measurement data text combining the inputted measurement value and ID number.

The I / O interface 74 inputs the measurement value at the base element 36.

The system base 36 includes a charge sensor 76, an amplifier 78, an analog digital (A / D) converter 80, and a display unit 54. As described above, the charge sensor 76 is composed of a capacitor disposed on the scale 44 of the scale body 40, and an electrode mounted in the slider 42, and outputs a voltage signal corresponding to the measured value.

The amplifier 78 amplifies the analog DC measurement signal output from the charge sensor 76.

The A / D converter 80 converts the analog DC measurement signal amplified by the amplifier 78 into a digital value.

The measured value converted into this digital value is displayed on the display unit 54 and input to the I / O interface 74 of the control unit 38 via the connection cable 82.

The amplifier 78 is zero-adjusted at the same time as the deviation is adjusted so that the measured value converted by the A / D converter 80 matches the actual distance. In this embodiment, the measured value is displayed on the display unit 54 with up to six significant figures.

In the control unit 38, the side battery 84 is combined, and the driving power supply V _D is supplied to each electronic component through the power switch 62 and the power supply circuit 86.

Hereinafter, the operation in the measurement data aggregation system having such a configuration will be described with reference to FIGS. 5A and 5B.

That is, first, in order to use the measuring device 20 having the above-described circuit configuration, the worker 18 inputs the power switch 62 (step S ₁ ), and then attaches the ID number attached to the measuring device 20. Is set by the dip switch 60 (step S ₂ ).

Therefore, the set ID number is stored in the RAM 70 (step S ₃ ). This ID number remains the same unless the power switch 62 is cut off or the setting state of the dip switch 60 is changed.

In the state where the setting operation of the ID number is completed, the worker 18 uses the measuring device 20 having the ID number assigned to one measurement item of the measurement object 12 on the measurement table 16. It is measured (step S _4). That is, the slider 42 is moved by inserting the measurement object 12 between the lower ends 46 and 48 of the system base 36.

At this time, the measured value converted into the digital value displayed on the display unit 54 also changes as the slider 42 moves.

And when turned into the correct the measured object 12 between the lower end (46,48), the worker 18 will press the transmission boteon 56 is attached to the pressing portion of the slider 42 (step S _5).

As a result, the CPU 64 of the control unit 38 reads the digital measurement values input to the I / O interface 74 as the correct measurement values, and stores them in the RAM 70 once (step S ₆ ).

The measurement value and ID number are then edited into the measurement data text 88 as shown in FIG. ₆ (step S ₇ ).

As shown in the figure, the full text of the measurement data 88 includes the head 90, the two-digit ID number 92, the seven-digit measurement data (measurement value) 94, the ferry code 96, and the carriage, including the decimal point. Return (C / R) code 98 and line feed (LF) code 100.

The head 90 is a predetermined prescribed code that indicates the measurement data transmitted from the meter 20.

The parity code 96 is a code for checking for errors in data transmission.

The C / R code 98 indicates that the measurement data is complete.

The CPU 64 outputs the measurement data message 88 to the transmitter 72 after the editing of the measurement data message 88 is completed.

The transmitter 72 frequency-modulates the input digital measurement data (step S ₈ ) and wirelessly outputs it (step S ₉ ).

In this case, the worker 18 himself also performs the function of the antenna.

FIG. 7 is a time chart showing the relationship between the digital data signal 102 of the measurement data message 88 supplied from the CPU 64 and the frequency modulated signal 104 output from the transmitter 72. As shown in FIG.

In other words, in the data signal 102 of the measurement data telegram 88, the frequency modulated signal 104 corresponding to the period in which " 0 " (L level) continues is the frequency F ₁ .

The frequency modulated signal 104 corresponding to the period in which " 1 " (H level) continues is the frequency F ₂ .

When one data transmission period of "1" or "0" is T, the L ("0") level of the frequency modulation signal 104 is composed of n pulses, and the H ("1") level is It consists of m pulses.

When the receiver 26 of the host device 22 receives the full frequency modulated measurement data 88 through the antenna 24 (step S ₁₀ ), the receiver 26 receives the received frequency modulated measurement data. The full text 88 is demodulated to the original digital measurement data full text 88 (step S ₁₁ ). The demodulated measurement data text 88 is sent from the receiver 26 to the host computer 34 via the control circuit 28.

The host computer 34 checks the parity code 96 of the inputted measurement data 88 and checks whether there is a transmission error (step S ₁₂ ).

If a transmission error occurs, it is transmitted to the control circuit 28. As a result, the control circuit 28 sounds the buzzer 30 and lights up the error lamp 32 (step S ₁₃ ).

When the worker 18 confirms the sound of the buzzer 30 and the lighting of the error lamp 32, the worker 18 may measure the same item again (step S ₄ ).

In addition, the host computer 34 is programmed with the measurement items in each measuring table 16, the measurement procedure, the ID number of the measuring device 20 to be used for each measurement, and a large allowable measuring value.

Therefore, even when the worker 18 measures the wrong item of the measured object 12, in the wrong order, or with the wrong measuring device 20, it is determined that the measurement error is a buzzer 30 and an error. A warning can be issued with the lamp 32.

When the host computer 34 determines that the measurement data of the inputted measurement data is correct, the host computer 34 aggregates the measurement data of each measurement item of "A"-"J" of each of the next measured objects 12 to be transmitted. (Step S ₁₄ ).

Based on the counting result, the sum / part as the product to be measured is judged, and data such as the overall quality level and the quality is calculated (step S ₁₅ ).

In such a measurement data aggregation system, transmission of measurement data between each measurement device 20 and the host device 22 is performed by using wireless communication, so that it is not necessary to connect each measurement device 20 and the host device with a cable. Handling of the measuring device 20 becomes easy.

Therefore, the measurement work efficiency of a worker can be improved significantly.

In addition, since the repeater and the cable can be removed, the whole system can be made compact.

Moreover, since the ID number set to each measuring device 20 can easily realize about two digits, compared with the conventional system, the number of installations of the measuring device 20 can be increased easily, and an ID number as needed. Can be easily changed, and if the type of the measured object 12 is changed or if the measured item is changed, only the ID number of each measuring device 20 is changed in accordance with the program change of the host computer 34, Simple system changes are possible.

That is, this system can respond quickly to the kind change of the to-be-measured object 12. FIG.

In addition, since the ID number is always attached to each measurement data, there is no case where the host computer 34 shows wrong measurement data.

That is, like the conventional system, the false data is not input as it is due to the connector connection error of the repeater.

Therefore, the reliability of the measurement data can be further improved.

Claims (2)

A plurality of measuring instruments 20 each having unique identification (ID) information, each measuring predetermined measurement on the object to be measured 12 as a measuring means, and wirelessly outputting the measured values as the ID information; In the measurement data aggregation system provided with the host apparatus 22 which receives the wirelessly output measurement value and ID information, and aggregates each measurement value based on the ID information, each measuring device is for setting the unique ID information. Setting means (60); Storage means (70) for storing ID information set by said setting means; An analog digital (A / D) converter 80 for converting the measured value measured by the measuring means into a digital value; Editing means (64) for editing the measured values converted into digital values by the A / D converter and the ID information stored in the storing means into a serial measurement data item (88); A transmitter 72 for wirelessly transmitting the full measurement data 88 of the serial edited by said editing means; And supporting means (56) for instructing to wirelessly transmit the measurement data (88) of the serial from the transmitter by initiating operation of the editing means; The host device includes: a receiver (26) for receiving the full text of the measurement data of the serial; And a host computer (34) for aggregating the measurement values of each measurement data text received by the receiver based on the ID information. The measurement data aggregation system according to claim 1, wherein the measurement data preamble (88) includes two-digit ID information and seven-digit measurement values including a decimal point.

Images