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Reader/writer, reader/writer control method, and program

A technology of reader-writer and memory, applied in the field of reader-writer, can solve the problems of increased cost and high unit price of RF tags, and achieve the effect of suppressing cost, increasing capacity, and suppressing increase

Pending Publication Date: 2021-04-09
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the unit price of RF tags with large memory capacity is high, leading to problems such as increased costs.

Method used

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  • Reader/writer, reader/writer control method, and program
  • Reader/writer, reader/writer control method, and program
  • Reader/writer, reader/writer control method, and program

Examples

Experimental program
Comparison scheme
Effect test

specific example 1

[0069] Figure 5 It is a flowchart showing a specific example 1 of the flow of data reading processing by the reader / writer 10 .

[0070] When the RF communication control unit 20 of the reader / writer 10 acquires a command to read data received from the PLC 50 via the upper communication control unit 11, it first performs anti-collision processing using the function of the RF tag specifying unit 21 (step S1).

[0071]The RF communication control unit 20 judges whether or not the anti-collision processing has been completed normally (step S2). When the RF communication control unit 20 can identify a plurality of predetermined target RF tags 40A, 40B, and 40C by the RF tag identification unit 21, it determines that the anti-collision processing is normally completed (YES in step S2), and proceeds to step S3. . When the RF communication control unit 20 cannot identify a plurality of predetermined target RF tags 40A, 40B, and 40C by the RF tag identification unit 21, it determin...

specific example 2

[0084] Figure 6 It is a flowchart showing a specific example 2 of the flow of the data reading process performed by the reader / writer 10 . Such as Figure 6 As shown, if the RF communication control unit 20 of the reader / writer 10 acquires an instruction to read data received from the PLC 50 via the upper communication control unit 11, it uses the function of the RF tag identification unit 21 to perform anti-collision processing, and performs object Confirmation of the RF tag set (step S21).

[0085] The RF tag specifying unit 21 may also read the identifications of each of the plurality of target RF tags included in one set written in the memory of at least one of the plurality of target RF tags existing within the communicable area of ​​the antenna 35. information to confirm the target RF tag set. For example, in the memory of the RF tag 40A, the identification information of the RF tag 40B and the RF tag 40C are written in advance together with the identification inform...

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PUM

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Abstract

According to the present invention, an increase in cost is suppressed, and the amount of information that can be managed by an RF tag is increased. The present invention comprises: an RF tag specifying unit (21) which specifies a plurality of predetermined RF tags (40) as target RF tags (40); and a memory processing unit (22) which integrates memories included in a plurality of the target RF tags (40), and performs at least one memory process among reading and writing by using the integrated memories as one virtual memory space.

Description

technical field [0001] The present invention relates to a reader writer (reader writer), a control method and a program of the reader writer. one. Background technique [0002] Conventionally, in order to manage solids at a manufacturing site or a distribution site, a reader / writer is known that reads data from or writes data to an RF tag attached to an individual, and communicates with a programmable logic controller ( ProgrammableLogic Controller, hereinafter referred to as "PLC") and other industrial control devices for data exchange. [0003] For these readers, the communication with the RF tag is usually carried out via wireless communication. In order to improve the reliability of wireless communication, there is a method of adding a cyclic redundancy code (Cyclic Redundancy Code, CRC) to the data from the RF tag. Thereby, an abnormality detection technique is performed (for example, refer to patent document 1). [0004] prior art literature [0005] patent documen...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06K7/10
CPCG06K7/10009G06K19/0723G06K19/0725G06F3/0679G06F3/0665G06F3/0608
Inventor 肥塚八寻
Owner ORMON CORP
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