JP2013152176A - Separately positioned ic tag recognition device and separately positioned ic tag recognition method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separately positioned IC tag recognition device for recognizing an IC tag attached to a work object positioned at a separated position that eliminates the need of access of an operator to an object, realizes a remote control playing roles such as detection, conversion, transmission/reception, instructions, recording, accumulation, analysis and evaluation corresponding to various types of measurement parameters played by a sensor system without using an electrical signal cable, a detection line or the like and quickly extracts a measurement result in response to a measurement command from the separated position.SOLUTION: In order to recognize an object from a long distance, a separately positioned IC tag recognition device performs the steps of: driving a cell built in an IC tag positioned at a separated position by an electromagnetic wave such as a laser beam; driving a memory circuit storing a recognition number of the IC tag and causing a light emitting element to emit light; transmitting the recognition number to a PC terminal or the like of a base station located at an operation side of an operator; and displaying the recognition number. On the other hand, the separately positioned IC tag recognition device further performs the steps of: driving a sensor by the electromagnetic wave such as the laser beam via a light receiving element and the cell; and transmitting a measurement value to the PC terminal or the like of a base station side located at the operation side of the operator via a signal conversion circuit by applying radio communication thereto and displaying the measurement value on the PC terminal or the like.

Description

  The present invention relates to an IC tag recognition device that identifies an IC tag installed on an object at a position separated from an operator and grasps various information held by the IC tag.

  2. Description of the Related Art Conventionally, a recognition device is known in which an operator can easily recognize a work target, and electronically and automatically performs identification of target components and facility authentication.

  As a recognition device for recognizing the identification number of an IC tag at a remote position, for example, there is a technique disclosed in Patent Document 1. Patent Document 1 receives a laser pointer that irradiates a modulated infrared signal including visible light to a wireless tag at a position separated from an operator, and information superimposed on a harmonic carrier returned from the wireless tag. And a base station that can visually recognize that the information has been received. In the wireless tag, the infrared signal from the laser pointer is received by the light receiving unit, demodulated by the demodulation unit, and sent to the control means. The control means analyzes the demodulated signal, and sends information such as an identification recognition number, a position coordinate, and an equipment attribute corresponding to the demodulated signal to the reply means. The reply means superimposes the transmitted information on the high-frequency carrier of the oscillating unit and sends it to the transmitting antenna for transmission as a high-frequency power source. It is disclosed that a wireless base station receives this high-frequency radio wave and automatically performs object recognition, data analysis, and the like.

  In Patent Document 2, a plurality of information transmission type markers for transmitting information by light emission are attached to an object, the light emission of the marker is photographed by a camera, and the transmission information content by pulse modulation light emission emitted by the marker from the photographed image is described. In view of this, there has been disclosed a marker information detection apparatus that detects the content of information held in an image.

JP-A-9-116473 Japanese Patent Laid-Open No. 2003-256783

  In various plants such as nuclear / thermal / hydropower plants, substations, and chemical plants, central management is required to centrally manage various information in the plants. Further, even in a computer and server environment such as a data center, which will become the core of the cloud society in the future, a large amount of information gathering energy is spent in order for workers to handle a huge amount of objects.

  Wireless tags, such as IC tags, have realized recognition number management of long-lived objects that are not easily affected by contamination instead of conventional barcodes, but are suitable devices for recognizing IC tags installed at remote locations. There has never been a method, and it was necessary for an operator to access the object. For example, in a work in a high radiation environment such as a nuclear power plant, if it is possible to recognize the state of an object in a place far from the radiation source, it is considered that it can greatly contribute to the reduction of the exposure of the worker.

  On the other hand, sensors are widely applied in the industrial field. Corresponding to the current measurement parameters, an electric signal cable, a detection line, and the like are required for the sensor system to play a role of detection, conversion, transmission / reception, instruction, recording, accumulation, analysis, evaluation, and the like. This is because, as in the case described above, it is necessary to avoid the worker's access as much as possible for measurement in a bad environment.

  Here, there is a demand for a technique that can quickly extract a measurement result by a measurement command from a remote position without having a signal conversion unit using a cable wiring, a cable, or the like in the prior art.

  In Patent Document 1, information on a wireless tag selected by a laser pointer is transmitted to a base station using a high-frequency carrier (radio wave), and an identification target is searched and specified accurately and quickly. However, since the worker cannot visually check the response of the wireless tag directly, the accuracy and work efficiency of selecting the work object are inferior.

  Moreover, in patent document 2, the information of the information transmission type marker which has LED is transmitted by pulse modulation light emission, these are image | photographed with a camera, and simultaneous management of many objects is enabled. However, since information transmission is performed by optical communication, information from a marker that does not exist in the same visual field cannot be received.

  It is an object of the present invention to provide a new IC tag recognition apparatus and IC tag recognition method that solve the above problems.

  The present invention uses, as a base station, an IC tag installed on a work object, a transmission device that transmits electromagnetic waves including laser light to the IC tag, and a transmission / reception module having an antenna that transmits and receives radio signals to and from the IC tag. In the remote position IC tag recognizing device provided, the IC tag includes a receiving unit that receives electromagnetic waves from the transmitting device, a light emitting unit that informs an operator of information on the IC tag, a battery unit that drives the light emitting unit, and an IC Information communication between the storage unit for storing the work object information and IC tag information possessed by the tag, the antenna for transmitting and receiving the IC tag information as a radio wave signal between the transmitting and receiving module, the light emitting operation of the light emitting unit and the transmitting and receiving module It has the control part which controls.

  In the remote position IC tag recognition apparatus, the transmission / reception module includes a computer having a display unit.

  In the remote position IC tag recognition device, at least one of the transmission / reception module and the computer is provided with a database in which the name of the work object and the IC tag recognition number are recorded in advance.

  In the remote position IC tag recognizing device, the transmitting device is a laser pointer, and the receiving unit is a light receiving unit.

  In the remote position IC tag recognition device, the control unit is composed of a microcomputer.

  In the remote position IC tag recognition device, the IC tag storage unit records IC tag information including the name of the work object and the IC tag recognition number.

  Further, in the remote position IC tag recognition device, the IC tag has a sensor for measuring the state of the work object and transmitting it to the transmission / reception module.

  In the remote position IC tag recognition device, the sensor is a gas sensor.

  In the remote position IC tag recognition device, the sensor is a voltage / current sensor for inspecting the conductive state of the work object.

  The remote position IC tag recognition device according to any one of claims 1 to 7, wherein the IC tag is attached to a reactor building facility.

  In the remote position IC tag recognition device, the IC tag is attached to a high-voltage transformer facility.

  In the remote position IC tag recognition device, the IC tag is connected to the control circuit and power circuit of the work object, and the control unit of the IC tag generates an opening / closing signal for controlling opening / closing of the control contact of the control circuit. The power circuit is driven and controlled.

  In the remote position IC tag recognition device, the light emission state of the light emitting portion of the IC tag is changed when the recognition number input from the computer matches the recognition number of the IC tag.

  In the remote position IC tag recognition device, when the state quantity of the sensor changes, the light emission state of the light emitting part of the IC tag is changed to light emission of a different color and the identification signal of the light emitting part is transmitted to the transmission / reception module side. It is characterized by.

  The IC tag further includes an IC tag attached to the work object, a transmission device that transmits an electromagnetic wave including laser light to the IC tag, and a transmission / reception module that transmits and receives radio signals to and from the IC tag. A receiving unit that receives electromagnetic waves from the light emitting unit, a light emitting unit that notifies the worker of IC tag information, a battery unit that drives the light emitting unit, a storage unit that stores work object information and IC tag information, and a transmission / reception module; In a remote position IC tag recognition method for a device having an antenna for transmitting / receiving work object information and IC tag information between, and a control unit for controlling light emission operation and information communication of the light emitting unit, a recognition number input from a computer, When the identification numbers of the IC tags match, the light emission state of the light emitting portion of the IC tag is changed.

  Further, in the remote position IC tag recognition method, the IC tag has a sensor for measuring the state of the work target, and when the state quantity of the sensor changes, the light emission state of the light emitting portion of the IC tag is changed to light emission of a different color. In addition, the identification signal of the IC tag is transmitted to the transmission / reception module side.

  Further, in the remote position IC tag recognition method, the IC tag is connected to the control circuit and power circuit of the work object, and the control unit of the IC tag generates an opening / closing signal for controlling opening / closing of the control contact of the control circuit. The power circuit is driven and controlled.

  The present invention uses, as a base station, an IC tag installed on a work object, a transmission device that transmits electromagnetic waves including laser light to the IC tag, and a transmission / reception module having an antenna that transmits and receives radio signals to and from the IC tag. In the remote position IC tag recognizing device provided, the IC tag includes a receiving unit that receives electromagnetic waves from the transmitting device, a light emitting unit that informs an operator of information on the IC tag, a battery unit that drives the light emitting unit, and an IC Information communication between the storage unit for storing the work object information and IC tag information possessed by the tag, the antenna for transmitting and receiving the IC tag information as a radio wave signal between the transmitting and receiving module, the light emitting operation of the light emitting unit and the transmitting and receiving module By having a control unit for controlling the IC tag, it is possible to read the identification number of the IC tag from the remote position. Further, the operator can instantly identify and acquire the state quantities of the devices and sensors at the remote positions according to the display of the light emitting unit.

It is a block diagram which shows the separation position IC tag recognition apparatus of Example 1 of this invention. It is explanatory drawing which shows the structure of the database used in Example 1 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 2 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 3 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 4 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 5 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 6 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 7 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 8 of this invention. It is a block diagram which shows the separation position IC tag recognition apparatus of Example 9 of this invention.

  The present invention will be described below with reference to examples.

  FIG. 1A is a block diagram showing a configuration example of a remote position IC tag recognition device in Embodiment 1 of the present invention. In FIG. 1A, 101A is a laser pointer tag (hereinafter referred to as LPT) that is operated by a laser beam, in which 102 is a battery unit, 103 is a light emitting unit composed of LEDs, 104 is a signal switching unit having a clock circuit, Reference numeral 105 denotes a light receiving unit having a photodiode, 106 denotes a demodulation unit having a demodulation circuit, 107 denotes a modulation unit having a modulation circuit, and 108 denotes a microcomputer for controlling the LPT 101A. The microcomputer 108 further includes a signal conversion circuit 108A and a memory circuit 108B.

  Reference numeral 202 denotes a transmission / reception module that functions as a base station. The transmission / reception module 202 can be configured as a mobile base station or an in-vehicle base station held by an operator. In the transmission / reception module 202, reference numeral 203 denotes a microcomputer having a control circuit 203A for controlling a drive command such as an LED and a memory circuit 203B for outputting an identification number of the LPT 101A. Reference numeral 204 denotes a circulator for switching a received radio wave signal to a transmission signal, 2051 an antenna, 205 a modulation unit having a modulation circuit that converts a DC internal circuit signal into AC radio wave, and 206 a demodulation that converts AC radio wave into DC. A demodulation unit having a circuit.

  Reference numeral 201 denotes a PC terminal as a computer monitor system connected to the transmission / reception module 202. Reference numeral 207 denotes a display for displaying an LPT identification number (hereinafter referred to as ID) in the PC terminal 201. Reference numeral 301 denotes a high-frequency radio wave transmitted / received from the transmission / reception module 202 or the antenna 2051 of the LPT 101 </ b> A, and 302 is a laser beam emitted from the laser pointer 303.

  Instead of the PC terminal 201, a computer system may be used, or management may be performed by connecting to a computer center connected to a network.

  In FIG. 1B, 208 is a database provided in the PC terminal 201. The database 208 includes a data table 209 configured from a PC terminal side ID column 210, an object name column 211, an IPTID column 212, and a matching result column 213. The database 208 may be provided at an arbitrary position on the system, for example, the transmission / reception module 202.

  When the laser beam 302 emitted from the laser pointer 303 held by the operator reaches the light receiving unit 105 of the LPT 101A, the microcomputer 108 drives the battery unit 102 after receiving the light to drive the light emitting unit 103 to emit light, so that the worker's The operator can recognize the result of the signal irradiated from the laser pointer 303 reaching the target LPT.

  Next, the LPT 101A drives the internal memory circuit 108B to output an ID signal, and then the modulation unit 205 demodulates the ID signal from a direct current signal to an alternating current radio wave signal. Is transmitted to the antenna 2051 of the transceiver module 202.

  On the transmission / reception module 202 side, the modulation signal received from the antenna 2051 is converted into direct current by the demodulator 206 while switching between transmission and reception by the circulator 204, and the memory circuit 203B is driven to identify the ID of the LPT 101A The ID can be displayed as a number on the display 207 of the PC terminal 201.

  FIG. 2 shows a configuration example including a sensor 401 having various sensors directly connected to the remote position IC tag recognition device in the second embodiment of the present invention. In the following second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 2, a sensor 401 is connected to the LPT 101B. The laser beam 302 transmitted from the laser pointer 303 reaches the light receiving unit 105 of the LPT 101B. After receiving the light, the microcomputer 108 drives the battery unit 102 and further drives the light emitting unit 103 having an LED, and at the same time, the battery The sensor 401 directly connected to this is driven from the unit 102.

  The conventional power supply to the sensor system has only been a method of supplying the sensor from the external power supply device via the power cable. However, in the present invention, the electromagnetic wave such as a laser beam from the remote position from the battery unit via the light receiving unit 105. The sensor can be driven by the IC tag by supplying electric power. Furthermore, it is possible to acquire sensor information while efficiently using electric power by driving a sensor that is normally sleeping from a remote position when necessary.

  FIG. 3 shows a configuration example for driving a commonly used gas analysis sensor among various sensors directly connected to the remote position IC tag recognition device according to the third embodiment of the present invention.

  In FIG. 3, a sensor 401A composed of a gas analysis sensor is connected to the LPT 101C. The laser beam 302 transmitted from the laser pointer 303 reaches the light receiving unit 105 of the LPT 101C, and drives the battery unit 102 after receiving the light. The LPT 101C has a voltage stabilization unit 402 and stabilizes the power supplied to the sensor 401A.

  Various plants use sensors that measure hydrogen concentration and oxygen deficiency levels, or nuclear power plants use radiation measurement monitors, and chemical complex plants use hydrogen sulfide acetylene and other gas analysis sensors with parameters necessary for environmental measurement. In this embodiment, it is possible to eliminate the need for a power source and a signal cable by driving various sensors from a remote position using a battery unit provided in the LPT.

  FIG. 4 shows a configuration example for driving an electrical measurement system sensor among various sensors directly connected to the remote position IC tag recognition device in Embodiment 4 of the present invention. There is a risk of causing an electric shock if an operator approaches a high-voltage electric facility easily, and a serious accident often occurs in the electric industry even though the power supply is conventionally isolated. This is due to the fact that there is no time for the work side to recognize the power supply isolation, the measurement location is not specified, and the measurement equipment is insufficient. ing. In Example 4, since these risks and problems are fundamentally solved, measurement can be performed without approaching the target region, and the state quantity can be quickly extracted.

  In FIG. 4, a sensor 401B is connected to the LPT 101C. The laser beam 302 transmitted from the laser pointer 303 reaches the light receiving unit 105, and after receiving the light, has a voltage stabilizing unit 402 that drives the battery unit 102 and stabilizes the power, thereby stabilizing the power supply of the sensor.

  In the sensor 401B supplied with electric power, an electromotive force induced in the cable sheath portion 502 surrounding the conductor 501 of the electric cable to which the voltage is applied is measured, and a voltage value corresponding to the conductor voltage is extracted, or an electric conduction measurement is performed. In the scene, a current signal (a voltage value is converted into a current value through a resistor) extracted from the coil 503 can be extracted. These signals can be measured by transmitting measured values to the PC terminal 201 on the base station side in accordance with signal transmission / reception with the high-frequency radio wave 301 in FIG.

  FIG. 5 shows an ITV used for an industrial television (ITV) installed on the upper part of the reactor building cover of a nuclear power plant among various sensors directly connected to the remote position IC tag recognition device in Example 5 of the present invention. A configuration example of a site where a large number of various instruments and sensors such as a camera 601 and an illumination 602 are arranged is shown.

  In the fifth embodiment, the laser beam 302 transmitted from the ground laser pointer 303 is received by the IPT camera 601 and the LPT 101 installed in the illumination 602, and then the signal transmitted from the operation side by driving the battery unit and the LED. Can recognize the result of irradiation to the target LPT and return the ID to the PC terminal of the base station. As a result, in the inspection of various instruments and sensors, the record creation work is steadily recorded in the PC terminal based on the record number and the data linked in advance in the database when creating the inspection record. I can go.

  FIG. 6 shows an inspection of a conservator 702 and a radiator 703 attached to a large transformer 701 installed in a substation among various sensors directly connected to a remote position IC tag recognition device in Embodiment 6 of the present invention. An application example in the situation recording situation is shown.

  The LPT 101 is installed in advance in a device that is set at a position that is higher than the ground level of the transformer for actual object recognition. At the time of inspection, the LPT 101 of the device concerned is irradiated with the laser pointer 303 from the ground and linked with the LPT ID and the LPT device on which the device on which the LPT is installed, such as manufacturing history, inspection history, and other information, Simultaneously with reading of the LPT 101, it can be displayed on the display 207 of the PC terminal 201 via the transmission / reception module 202.

  FIG. 7 shows a seventh embodiment of the present invention. In the seventh embodiment of the present invention, when there are a plurality of various types of sensors directly connected to the remote position IC tag recognition device, each circuit individually recognizes each sensor to identify the sensor 401D and the sensor 401E. Performs circuit operation.

  That is, in FIG. 7, the LPT 101D is provided with a sensor 401D having a resistance temperature detector 801 in a temperature measurement target area 802, and the LPT 101E is provided with a similar sensor 401E. A circuit provided in each LPT individually recognizes the sensor and performs circuit operation, and the state quantity obtained from the sensor for each ID of the LPT is identified and displayed on the PC terminal via a transmission / reception module (not shown).

  FIG. 8 shows a configuration example for displaying the distance IC tag recognition device and the state quantities of various sensors directly connected thereto in the eighth embodiment of the present invention. For example, the gas analysis sensor in FIG. 3 displays the gas concentration threshold value above or below, measurement not possible, power ON / OFF, etc., and the electrical system in FIG. 4 displays the presence / absence of voltage / current, power failure, power reception status, etc. .

  In situations where it is determined whether or not work is possible due to the presence or absence of oxygen deficiency, or where work is started in a state where the power supply is isolated with high-voltage or ultra-high-voltage electrical equipment, the worker can quickly grasp the state quantity. By displaying the result by color with the LED, in addition to ensuring safety, the actual product can be recorded without making a mistake and the quality level can be improved.

  In the LPT 101F of FIG. 8, the microcomputer 108 drives the red light emitting unit 1031 from the battery unit 102 when the measured value of the sensor exceeds a threshold, for example, according to the state quantity of the measurement target. The light emitting unit 1032 is driven, and the yellow light emitting unit 1033 is driven when the measurement stability of the sensor is unstable.

  Further, when the clock signal indicating that the time exceeding the period of the regular inspection has elapsed from the previous reading time when the identification number is recognized, the red light emitting unit 1031 is driven, and when it is normal time, the green light is emitted. Various applications such as driving the light emitting unit 1032 and driving the yellow light emitting unit 1033 when the output of the identification number is unstable can be used properly.

  FIG. 9 shows Embodiment 9 of the present invention. The power circuit of the work object is driven by various control circuits directly connected to the remote position IC tag recognition device. In FIG. 9, the control relay 901 is energized by receiving the control power from the voltage stabilizing device 402 of the LPT 101G, the control contact 902 is controlled to open and close, and the control motor 903 connected to the power circuit bus 904 is driven and controlled. The motor drive opening / closing door 905 as an object is opened and closed.

  With the above configuration, it is possible to drive a control circuit for driving not only the motor-driven opening / closing door 905 but also a distant machine and the like.

101, 101A-101G ... LPT
DESCRIPTION OF SYMBOLS 102 ... Battery part 103 ... Light emission part 1031 ... Red light emission part 1032 ... Green light emission part 1033 ... Yellow light emission part 104 ... Signal switching part 105 ... Light receiving part 201 ... PC terminal 202 ... Transmission / reception module 108 ... Microcomputer 107 ... Modulation part 2051 ... Antenna 106 ... Demodulator 301 ... High-frequency radio wave 302 ... Laser beam 303 ... Laser pointer 401A-401E ... Sensor 901 ... Control relay 902 ... Control contact 903 ... Control motor 904 ... Power circuit bus 905 ... Motor driven door

Claims (17)

An IC tag installed on a work object, a transmitter for transmitting electromagnetic waves including laser light to the IC tag, and a transceiver module having an antenna for transmitting and receiving radio signals between the IC tag are provided as a base station. In the remote position IC tag recognition device,
The IC tag includes a receiving unit that receives electromagnetic waves from the transmission device, a light emitting unit that informs an operator of information on the IC tag, a battery unit that drives the light emitting unit, and a work target that the IC tag has. A storage unit for storing object information and IC tag information; an antenna for transmitting and receiving the IC tag information as a radio signal between the transmission and reception module; and a light emitting operation of the light emitting unit and information communication between the transmission and reception module. A remote position IC tag recognition device comprising a control unit for controlling.   The remote position IC tag recognition apparatus according to claim 1, wherein the transmission / reception module includes a computer having a display unit.   The remote position IC tag recognition device according to claim 1 or 2, wherein at least one of the transmission / reception module and the computer is provided with a database in which names of work objects and IC tag recognition numbers are recorded in advance. Remote position IC tag recognition device.   4. The remote position IC tag recognition device according to claim 1, wherein the transmission device is a laser pointer, and the reception unit is a light receiving unit.   5. The remote position IC tag recognition device according to claim 1, wherein the control unit comprises a microcomputer.   6. The remote position IC tag recognition device according to claim 1, wherein the IC tag storage unit records IC tag information including a name of a work object and an IC tag recognition number. Remote position IC tag recognition device.   7. The remote position IC tag recognition device according to claim 1, wherein the IC tag includes a sensor that measures a state of the work object and transmits the measured state to the transceiver module. Tag recognition device.   8. The remote position IC tag recognition device according to claim 7, wherein the sensor is a gas sensor.   8. The remote position IC tag recognition device according to claim 7, wherein the sensor is a voltage / current sensor for inspecting a conductive state of a work object.   8. The remote position IC tag recognition device according to claim 1, wherein the IC tag is attached to a reactor building facility.   8. The remote position IC tag recognition device according to claim 1, wherein the IC tag is attached to a transformer facility.   The remote position IC tag recognition device according to any one of claims 1 to 6, wherein the IC tag is connected to a control circuit and a power circuit of a work object, and the control unit of the IC tag has a control contact of the control circuit. An apparatus for recognizing a remote position IC tag, wherein an open / close signal for open / close control is generated, and the power circuit is driven and controlled by the control circuit. The remote position IC tag recognition device according to any one of claims 2 to 12,
The remote position IC tag recognition apparatus, wherein when the recognition number input from the computer matches the recognition number of the IC tag, the light emission state of the light emitting part of the IC tag is changed.   14. The remote position IC tag recognition device according to claim 13, wherein when the state quantity of the sensor changes, the light emission state of the light emitting part of the IC tag is changed to light emission of a different color, and the identification signal of the IC tag is changed. The remote position IC tag recognition apparatus, wherein the remote position IC tag recognition apparatus transmits to the transmission / reception module side. An IC tag attached to a work object; a transmission device that transmits an electromagnetic wave including laser light to the IC tag; and a transmission / reception module that transmits and receives a radio signal to and from the IC tag. A receiving unit that receives electromagnetic waves from a transmission device, a light emitting unit that notifies an operator of IC tag information, a battery unit that drives the light emitting unit, a storage unit that stores work object information and IC tag information, In the remote position IC tag recognition method of an apparatus having an antenna for transmitting and receiving the work object information and IC tag information to and from the transmission / reception module, and a control unit for controlling light emission operation and information communication of the light emitting unit,
A remote position IC tag recognition method, comprising: changing a light emission state of a light emitting unit of the IC tag when a recognition number inputted from the computer matches a recognition number of the IC tag.   16. The remote position IC tag recognition method according to claim 15, wherein the IC tag has a sensor for measuring a state of a work object, and light emission of a light emitting unit of the IC tag when the state quantity of the sensor changes. A remote position IC tag recognition method characterized by changing the state to light emission of a different color and transmitting an identification signal of the light emitting unit to the transceiver module side.   16. The remote position IC tag recognition method according to claim 15, wherein the IC tag is connected to a control circuit and a power circuit of a work object, and the control unit of the IC tag controls opening / closing of a control contact of the control circuit. And the power circuit is driven and controlled by the control circuit.

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