JP4542408B2 - Wireless tag - Google Patents

Description

  The present invention relates to a wireless tag suitable for use in logistics and manufacturing management.

  The wireless tag is an individual recognition technology for recognizing a data carrier in a non-contact manner using electromagnetic waves, and is specifically realized by an IC (Integrated Circuits) chip such as RFID (Radio Frequency Identification). Such a wireless tag can dramatically increase the amount of information that can be stored, can add or update the information, and can recognize multiple individuals at once. I have. For this reason, application of a wireless tag makes it possible to construct a flexible system, and is expected as a next-generation individual recognition element that replaces barcodes.

By the way, the tag information stored in the wireless tag can be read out by a tag reader / writer, but the operator who actually handles the article does not know the content stored in the wireless tag. For this reason, for example, even if the wireless tag is attached to the wrong article, there is a case where the worker does not know the situation and troubles at the site where the article is handled. Therefore, conventionally, in addition to the wireless tag, a medium displaying information stored in the wireless tag is sometimes added. For example, Patent Document 1 discloses an example of a wireless tag including a display unit that displays tag information stored in a wireless tag (see, for example, Patent Document 1).
JP 2002-236891 A (paragraphs [0008] to [0009], FIG. 1)

An object of this invention is to provide the radio | wireless tag which can improve the working efficiency of the operator in the inspection process of article manufacture .

In order to solve the above-described problems, the wireless tag of the present invention includes a memory for storing, as tag information, information including identification information of an article, inspection information of the article, and a criterion value for accepting or rejecting the inspection. The wireless transmission / reception unit that receives at least the inspection information of the article to be written, and the pass / fail determination for reading and comparing the inspection information of the article and the pass / fail judgment reference value of the inspection from the memory, and performing pass / fail judgment of the inspection of the article It is characterized by comprising a control unit and a pass / fail determination display unit for displaying a result of the pass / fail determination performed by the pass / fail determination control unit.

ADVANTAGE OF THE INVENTION According to this invention, the working efficiency of the operator in the inspection process of article manufacture can be improved .

<First embodiment (however, reference embodiment) >
FIG. 1 is a diagram showing an external configuration of a wireless tag according to the first embodiment of the present invention. FIG. 2 is a block diagram showing an internal configuration of the wireless tag according to the first embodiment of the present invention.

  As shown in FIG. 1, the wireless tag 1 according to the embodiment has a tag information display unit 11 including an LCD (Liquid Crystal Display) and a display SW for turning on / off the display of the tag information display unit 11 in appearance. (Switch) 12, a battery unit 13 made of a solar cell, a match control button 14 for starting a process for matching when the storage content of the tag information and the display content do not match, and an LED (Light Emitted Diode) ) And the like are housed in a base 18 made of a case made of plastic or the like, for example.

  As shown in FIG. 2, the wireless tag 1 according to this embodiment includes a tag information display unit 11, a display SW 12, a battery unit 13, and matching control as peripheral devices in a tag main unit 10 such as an RFID tag. The button 14 and the diagnosis result display unit 15 are connected to each other. The tag body 10 includes an IC unit 100 and an antenna unit 200. The IC unit 100 includes a wireless transmission / reception unit 101, a power supply circuit 102, a CPU 103, a memory 104, a display data holding unit 105, And a comparison control unit 106.

  The wireless transmission / reception unit 101 exchanges tag information with a tag reader / writer (not shown) via the antenna unit 200. The power supply circuit 102 is supplied with an electromagnetic wave having a predetermined frequency from the tag reader / writer, converts the electromagnetic wave signal into a DC voltage, and constitutes the IC unit 100, the CPU 103, the memory 104, the wireless transmission / reception unit 101, the display data. Electric power is supplied to the holding unit 105 and the comparison control unit 106.

  The CPU 103 functions as a control center for the wireless tag of the present invention. Here, the tag information stored in the memory 104 is read out and stored in the display data holding unit 105, and the data stored in the display data holding unit 105 is displayed on the tag information display unit 11. Also works. Furthermore, it also has a function for starting and managing a comparison operation by the comparison control unit 106.

  On the other hand, the comparison control unit 106 is activated by the CPU 103, compares the respective tag information held in the memory 104 and the display data holding unit 105, and based on the result, the LED of the diagnosis result display unit 15 is turned on (lit). Or has a function to turn off (extinguish).

  Here, the comparison control unit 106 is shown as a block independent of the CPU 103, but the CPU 103 may be configured to include the function of the comparison control unit 106 and execute the function. In this case, the comparison control unit 106 is unnecessary. Further, the display SW 12 and the coincidence control button 14 are connected to the CPU 103, and the operation of the CPU 103 is controlled by ON / OFF thereof.

  FIG. 3 is a diagram illustrating an example of a display screen in the tag information display unit of the wireless tag according to the first embodiment of the present invention. FIG. 3 shows an example in which “note number”, “product name”, “manufacturer name”, “model”, and “quantity” are displayed as tag information on the tag information display unit 11. Here, only examples of item names are shown, but actually, data stored in the display data holding unit 105 is displayed in the right column of the item names.

  In addition, as shown in FIG. 3, a confirmation mark 111 may be displayed in the upper left corner of the screen of the tag information display unit 11. This confirmation mark 111 indicates that the comparison control unit 106 matches the tag information stored in the memory 104 and the display data storage unit 105 as a result of comparison. In this case, the diagnosis result display unit 15 is included in the tag information display unit 11, and the LED mounted as the diagnosis result display unit 15 becomes unnecessary.

  4 and 5 are flowcharts cited for explaining an example of the operation of the wireless tag according to the first embodiment of the present invention. Hereinafter, the operation of the wireless tag 1 according to the first embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS. 4 and 5 (see FIGS. 1 and 2 as appropriate).

  First, a tag reader / writer (not shown) radiates an electromagnetic wave having a predetermined frequency toward the wireless tag 1. Then, since an AC induced voltage is generated in the antenna unit 200 of the wireless tag 1, the power supply circuit 102 converts the AC induced voltage into a DC voltage, and the CPU 103, the memory 104, and the wireless transmission / reception that configure the IC unit 100 Power is supplied to the unit 101, the display data holding unit 105, and the comparison control unit 106.

  As shown in FIG. 4, the CPU 103 first receives power supply (step S41, Yes), reads the ID information from the memory 104, and transmits the ID information to the tag reader / writer by the wireless transmission / reception unit 101 and the antenna unit 200. (Step S42). Subsequently, the CPU 103 receives the tag information transmitted by the tag reader / writer via the antenna unit 200 and the wireless transmission / reception unit 101, and writes the received tag information in the memory 104 (step S43).

  If the contents of the memory 104 have been updated (step S44, Yes), the CPU 103 reads the tag information from the memory 104, and displays the read tag information in the display data holding unit 105 (in FIGS. 4 and 5). , Abbreviated as VRAM). Further, the CPU 103 reads the tag information stored in the display data holding unit 105 and displays it on the tag information display unit 11 (step S45).

  Subsequently, when the display SW 12 is switched from the OFF state to the ON state (Step S46, Yes), or when the power supply from the solar cell as the battery unit 13 is resumed (Step S47, Yes), the CPU 103 The tag information is read from the display data holding unit 105, and the tag information is displayed on the tag information display unit 11 (step S48, see FIG. 5).

  When the comparison control unit 106 is activated by the CPU 103 after the display is completed, the comparison control unit 106 reads the tag information stored in the memory 104 and compares it with the tag information stored in the display data holding unit 105. Comparison is performed (step S49). Then, the comparison result is displayed on the LED as the diagnosis result display unit 15. If the comparison results match (step S49, “Yes”), the LED is turned on (lighted) (step S50, Yes). If the comparison results do not match (step S49, “No”), the LED is turned off. (Turns off) (the light remains off). Further, a confirmation mark 111 indicating coincidence may be displayed on a part of the screen of the tag information display unit 11 under the control of the CPU 103 (see FIG. 3).

  If the tag information does not match, control for matching the tag information is activated and executed. That is, when the match control button 14 is pressed and the ON is received (step S51, Yes), or when a predetermined time has elapsed after confirming the mismatch (step S52, Yes), the CPU 103 stores in the memory 104. The stored tag information is read, and the tag information is stored again in the display data holding unit 105 (step S53).

  Subsequently, returning to step S48, the CPU 103 displays the tag information stored in the display data holding unit 105 on the tag information display unit 11 (step S48), and the comparison control unit 106 stores the tag information stored in the memory 104. And the tag information held in the display data holding unit 105 are compared again (step S49).

  FIG. 6 is a diagram illustrating an example of a data structure of a memory in the wireless tag according to the first embodiment of the present invention. In FIG. 6, the memory 104 is divided into an item area, a write data area, and a write key information area. Here, in the item area, for example, “Note number”, “Product name”, “Manufacturer name”, “Model”, “Quantity”, “Product number”, “Number”, “Test name”, “Defect location” , Item names such as “determination” are stored, and data corresponding to these items are stored in the write data area. For example, data whose item name corresponds to “maker name” is “ABC company”.

  In the write key information area, data indicating an item name to be displayed on the tag information display unit 11 and data corresponding thereto is stored. In the example of FIG. 6, the relative address from the head address of each area is stored as the instructing data. That is, even if there are many items of data in the memory 104, only the item name indicated by the data in the write key information area and the data corresponding thereto are transferred to the display data holding unit 105 and transferred. Only the data is displayed on the tag information display unit 11.

  As described above, according to the wireless tag 1 of the present embodiment, the tag information stored in the memory 104 and the tag information stored in the display data holding unit 105 are automatically controlled under the control of the built-in CPU 103. And the result is displayed on the diagnosis result display unit 15. In addition, when the comparison results do not match, the tag information is rewritten to the display data holding unit 105 by the operator pressing the match control button 14 or periodically. For this reason, it is possible to eliminate the comparison confirmation work and the rewriting work by the operator. Therefore, the burden on the worker can be reduced and the man-hours can be reduced.

  FIG. 7 is a diagram schematically showing a process flow when the wireless tag according to the first embodiment of the present invention is applied to an industrial product manufacturing process.

  First, for example, in step 1, information corresponding to the product is written in the item area, write data area, and write key information area of the memory 104 of the wireless tag 1 by the tag reader / writer. Then, for example, when the process proceeds to the process 2, by writing the key information (a) in the write key information area, in the process 2, the data (a) specified by the key information (a) is displayed on the tag information display unit 11. Here, data 1) can be displayed. Similarly, in step 3, the data item (here, data 3) specified by the key information (c) can be displayed on the tag information display unit 11.

  As described above, according to the present embodiment, the tag information display unit 11 of the wireless tag 1 can display data that matches each process, for example, work instruction data in each process. Therefore, the worker of each process can obtain information such as work instructions at an appropriate timing, which can contribute to improvement of the worker's work efficiency.

<Second Embodiment>
FIG. 8 is a diagram showing an external configuration of a wireless tag according to the second embodiment of the present invention. FIG. 9 is a block diagram showing the internal configuration of the wireless tag according to the second embodiment of the present invention.

  As shown in FIG. 8, the wireless tag 1 </ b> A according to the embodiment has, in appearance, a tag information display unit 11 </ b> A made of an LCD or the like, a battery unit 13 made of a solar cell, and the items displayed on the tag information display unit 11 </ b> A The display content selection SW 16 for switching and selecting, and the pass / fail judgment display section 17 made of LED or the like are housed in a base body section 18 made of a case such as plastic, for example.

  Here, the acceptance / rejection determination display unit 17 is composed of, for example, three LEDs of blue, red, and yellow. If the blue LED is lit, “pass (OK)”, and if the red LED is lit, “fail” ( NG) ", a yellow LED lights up to indicate a network failure. Moreover, the pass / fail determination here refers to, for example, performing a comparison operation between inspection information and a pass / fail determination reference value defined in advance for the inspection information.

  In FIG. 8, the wireless tag 1 </ b> A includes the tag information display unit 11 </ b> A, but does not include the tag information display unit 11 </ b> A, and the LED as the pass / fail determination display unit 17 is directly mounted on the surface of the wireless tag body. It may be a structure.

  As shown in FIG. 9, the wireless tag 1A according to the present embodiment includes a tag main body 10A such as an RFID tag as a peripheral device, a tag information display unit 11A, a battery unit 13, a display content selection SW 16, and pass / fail. The determination display unit 17 is connected. The tag body unit 10A includes an IC unit 100 and an antenna unit 200. The IC unit 100 includes a wireless transmission / reception unit 101, a power supply circuit 102, a CPU 103, a memory 104, a memory control unit 107, and a pass / fail determination control unit. 108.

  The wireless transmission / reception unit 101 exchanges tag information with a tag reader / writer (not shown) via the antenna unit 200. The power supply circuit 102 is supplied with an electromagnetic wave having a predetermined frequency from the tag reader / writer, converts the electromagnetic wave signal into a DC voltage, and forms a CPU 103, a memory 104, a wireless transmission / reception unit 101, and a memory control constituting the IC unit 100. Power is supplied to the unit 107 and the pass / fail judgment control unit 108.

  The memory control unit 107 reads the identification information from the memory 104 and transmits it to the tag reader / writer (not shown) via the wireless transmission / reception unit 101. The wireless transmission / reception unit 101 receives information transmitted from the tag reader / writer, The received information is written into the memory 104. In the present embodiment, information such as article identification information, pass / fail judgment reference values, and article inspection information is transmitted from the tag reader / writer. In addition, the pass / fail determination control unit 108 reads and compares the pass / fail determination reference value and the article inspection information from the memory 104 and performs pass / fail determination.

  The CPU 103 functions as a control center for the wireless tag of the present invention. Here, the activation of the memory control unit 107 and the pass / fail determination control unit 108 is controlled, and also functions as a display screen control unit for displaying tag information on the tag information display unit 11A.

  In this embodiment, the memory control unit 107 and the pass / fail judgment control unit 108 are both blocks having a control function independent of the CPU 103, but the CPU 103 has each of the memory control unit 107 and the pass / fail judgment control unit 108. The function may be executed. In this case, the memory control unit 107 and the pass / fail determination control unit 108 are not necessary.

  In FIG. 9, the display content selection SW 16 is connected to the CPU 103, and selection items designated by the display content selection SW 16 are input to the CPU 103.

  FIG. 10 is a diagram showing an example of a display screen in the tag information display unit of the wireless tag according to the second embodiment of the present invention. FIG. 10 shows an example in which “product number”, “model”, “number”, “test name”, and “defect location” are displayed as tag information on the tag information display section 11A. These display items can be selected and displayed by the display content selection SW 16.

  Further, as shown in FIG. 10, the pass / fail judgment result may be displayed at the upper left corner of the screen of the tag information display unit 11A. In this case, “OK” (passed), “NG” (failed), “network failure”, and the like are displayed in correspondence with the three LEDs of blue, red and yellow on the pass / fail judgment display unit 17. When this display is performed, since the CPU 103 performs the function performed by the pass / fail determination control unit 108, the LED mounted as the pass / fail determination display unit 17 is unnecessary.

  FIG. 11 is a flowchart quoted for explaining an example of the operation of the wireless tag according to the second embodiment of the present invention. Hereinafter, the operation of the wireless tag 1A according to the second embodiment of the present invention will be described in detail with reference to the flowchart shown in FIG. 11 (see FIGS. 8 and 9 as appropriate).

  First, a tag reader / writer (not shown) radiates an electromagnetic wave having a predetermined frequency toward the wireless tag 1A. Then, since an AC induced voltage is generated in the antenna unit 200 of the wireless tag 1A, the power supply circuit 102 converts the AC induced voltage into a DC voltage, and the CPU 103, the memory 104, and the wireless transmission / reception unit configuring the IC unit 100 101, power is supplied to the memory control unit 107 and the pass / fail determination control unit 108.

  As shown in FIG. 11, the CPU 103 first receives power (step S61, Yes) and reads the ID information from the memory 104. The ID information is transmitted to the tag reader / writer by the wireless transmission / reception unit 101 and the antenna unit 200. Transmit (step S62). Subsequently, the CPU 103 receives the tag information transmitted by the tag reader / writer via the antenna unit 200 and the wireless transmission / reception unit 101, and writes the received tag information in the memory 104 (step S63). The tag information received at this time is ID information, pass / fail judgment reference value, article inspection information, and the like.

  If the contents of the memory 104 have been updated (step S64, Yes), the memory control unit 107 reads tag information such as pass / fail judgment reference values and article inspection information from the memory 104 (step S65). A pass / fail determination by the pass / fail determination control unit 108 is executed under the management of the CPU 103 (step S66).

  The pass / fail judgment control unit 108 compares the pass / fail judgment reference value with the article inspection information, and checks whether the article inspection information satisfies the pass / fail judgment reference value. And when it is judged that it passes (step S66, OK), the blue LED of the pass / fail judgment display part 17 is turned on, or an OK mark is displayed on the tag information display part 11A (step S67). On the other hand, when it is determined as unacceptable (step S66, NG), the red LED of the pass / fail determination display unit 17 is turned on, or an NG mark is displayed on the tag information display unit 11A (step S68).

  FIG. 12 is a diagram illustrating an example of a data structure of a memory in the wireless tag according to the second embodiment of the present invention. This data structure is almost the same as the data structure of the memory in the wireless tag according to the first embodiment. However, the data in the write key information area is different. In this case, the tag information display section 11A displays data relating to “product number”, “number”, “test name”, “defective location”, and “determination”. Is displayed.

  In the case of this data structure, the pass / fail determination control unit 108 performs pass / fail determination (FIG. 11, step S 66) based on the data of the “determination” item, and displays the result on the pass / fail determination display unit 17.

  FIG. 13 is a diagram showing another example of the data structure of the memory in the wireless tag according to the second embodiment of the present invention. In FIG. 13, the memory 104 is divided into an item area, a write data area, a determination area, a determination value area, and a write key information area. Here, for example, item names such as “product number”, “number”, “test name”, “defective part”, “measurement value”, “judgment” are stored in the item area, and the write data area , Data corresponding to these items is stored. For example, the data corresponding to the item name “test name” is “temperature test”.

  In addition, the determination area stores the result of determination by the pass / fail determination control unit 108, and the determination value area stores a range of acceptable values for each test. In the example of FIG. 13, the range of the pass value of the temperature test is stored at address 32, the data of the result of the temperature test is stored at address 14, and the address is stored at address 20 based on the result. Stores pass / fail judgment result data.

  Further, the write key information area stores the item name to be displayed on the tag information display unit 11A and data indicating the data corresponding thereto. In the example of FIG. 13, the relative address from the head address of each area is stored as the instructing data. The data at the end of the write key information area (in this example, the data at address 45) is data indicating the location address of data indicating the range of acceptable values. In this case, the top of the write data area Stores the relative address from the address.

  Based on the above data structure, the pass / fail determination control unit 108 first performs data indicating the end of the write key information area (data having an address of 32) as the pass / fail determination process (FIG. 11, step S66). Is compared with the data of the item of “determination” (data at address 14). Then, the determination result is stored in a determination area (address is 20).

  Therefore, when the data structure of FIG. 13 is adopted in the memory 104, for example, in the product inspection process, measurement data obtained upon inspection is written in the write data area corresponding to the item “determination”. When the wireless tag 1A is inserted, the wireless tag 1A determines whether or not the measured value is within a predetermined pass range, and displays the result on the pass / fail determination display unit 17. Therefore, an operator who manages the process can recognize whether or not the product has passed the predetermined inspection by merely looking at the pass / fail determination display unit 17.

  FIG. 14 is a diagram schematically showing a process flow when the wireless tag according to the second embodiment of the present invention is applied to an inspection process for industrial products.

  Here, for example, in the resistance value measurement and inspection step, first, the resistance value of the resistor is measured using a tester. Then, the measured value and key information (1) are written into the memory 104 of the wireless tag 1A using a tag reader / writer. In this case, the data structure in the memory 104 conforms to FIG. The key information (1) in FIG. 14 indicates the data at the end of the write key information area in FIG. That is, the data of the relative address instructing the pass / fail judgment reference value is written from the tag reader / writer to the key information (1).

  Then, in the wireless tag 1A, the pass / fail judgment control unit 108 reads the pass / fail judgment reference value based on the key information (1), and compares the result with the previously written measurement value, thereby judging the pass / fail. In the case of the example in FIG. 14, since the measured value is 50Ω and the pass determination reference value is 48 to 52Ω, the pass / fail determination is pass (OK). The result is displayed on the pass / fail judgment display unit 17. Subsequently, similar operations and processes are also performed in the weight measurement inspection process. In other words, the operator can immediately recognize the pass / fail of the inspection every time measurement for the inspection is performed in the inspection process.

  As described above, according to the present embodiment, in the inspection process, the wireless tag 1 </ b> A itself determines whether or not the product is acceptable and displays the result. Therefore, the operator can quickly and reliably recognize the rejected product, so that the work efficiency can be improved. Conventionally, in the case of an inspection failure, for example, the presence of an inspection failure product is displayed on a patrol lamp or the like based on the output from the inspection device, but those facilities are unnecessary. This also makes it possible to reduce capital investment.

  As described above, the wireless tag 1 of the present invention has a function of confirming that the stored content in the memory 104 matches the display content, so that the stored content and display content are manually changed. It is not necessary to confirm that they match. Therefore, the number of work items can be reduced, and the work load on the operator can be reduced.

  Further, in the manufacturing and inspection processes, the wireless tag 1A according to the present invention performs pass / fail determination of measurement data and displays the pass / fail result using an LED or the like, so that the work can be performed without using a pass / fail determination display device such as a patrol lamp. As a result, the work efficiency can be improved and the capital investment can be reduced.

It is the figure which showed the external appearance structure of the wireless tag which concerns on the 1st Embodiment of this invention. It is the figure which showed the block diagram of the internal structure of the wireless tag which concerns on the 1st Embodiment of this invention. It is the figure which showed the example of the display screen in the tag information display part of the wireless tag which concerns on the 1st Embodiment of this invention. It is the flowchart quoted in order to demonstrate an example of operation | movement of the wireless tag which concerns on the 1st Embodiment of this invention. It is the flowchart quoted in order to demonstrate an example of operation | movement of the wireless tag which concerns on the 1st Embodiment of this invention. It is the figure which showed an example of the data structure of the memory in the radio | wireless tag which concerns on the 1st Embodiment of this invention. It is the figure which showed typically the flow of the process at the time of applying the radio | wireless tag which concerns on the 1st Embodiment of this invention to the manufacturing process of an industrial product. It is the figure which showed the external appearance structure of the wireless tag which concerns on the 2nd Embodiment of this invention. It is the figure which showed the block diagram of the internal structure of the wireless tag which concerns on the 2nd Embodiment of this invention. It is the figure which showed the example of the display screen in the tag information display part of the radio | wireless tag which concerns on the 2nd Embodiment of this invention. It is the flowchart quoted in order to demonstrate an example of the operation | movement of the wireless tag which concerns on the 2nd Embodiment of this invention. It is the figure which showed the other example of the data structure of the memory in the radio | wireless tag which concerns on the 2nd Embodiment of this invention. It is the figure which showed the other example of the data structure of the memory in the radio | wireless tag which concerns on the 2nd Embodiment of this invention. It is the figure which showed typically the flow of the process at the time of applying the radio | wireless tag which concerns on the 2nd Embodiment of this invention to the inspection process of an industrial product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A Wireless tag 10, 10A Tag main-body part 11, 11A Tag information display part 13 Battery part 14 Match control button 15 Diagnosis result display part 16 Display content selection SW
17 Pass / fail judgment display unit 18 Base unit 100 IC unit 101 Wireless transmission / reception unit 102 Power supply circuit 103 CPU
104 memory 105 display data holding unit 106 comparison control unit 107 memory control unit 108 pass / fail judgment control unit 200 antenna unit

Claims (4)

A memory for storing identification information of the article, the inspection information and the information including the acceptance criteria value of the inspection of the article as the tag information,
A wireless transceiver for receiving at least inspection information of the article written in the memory ;
Reading and comparing the inspection information of the article and the pass / fail judgment reference value of the inspection from the memory, and a pass / fail judgment control unit for performing pass / fail judgment of the inspection of the article;
A wireless tag comprising: a pass / fail determination display unit that displays a result of the pass / fail determination performed by the pass / fail determination control unit. The tag information display unit for displaying at least a portion of the tag information stored in the memory, further, the wireless tag according to claim 1, characterized in that it comprises. Said tag information display unit, the is configured to include acceptance judgment display unit, the acceptance judgment result, wherein the acceptance judgment control unit outputs, according to claim 2, characterized in that displayed together on the display of the tag information The wireless tag according to. The memory stores a plurality of pass / fail criteria values,
The wireless transmission / reception unit receives information for selecting a pass / fail judgment reference value of one item from the pass / fail judgment reference values of the plurality of items as key information, together with the inspection information of the article,
The adequacy determining control unit, the basis of the key information received by the radio transceiver, select the acceptance criteria value of the first item, the selected acceptance criteria value and the examination information of the one item comparing the door, the wireless tag according to any one of claims 1 to 3, characterized in that performing the acceptance judgment of the inspection of the article.

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