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An electronic device and a radio frequency tag decoding error correction method

A technology of electronic equipment and error correction method, applied in the field of decoding and error correction of radio frequency tags, can solve the problem of low data recognition rate of radio frequency tags, and achieve the effect of improving the data recognition rate

Active Publication Date: 2019-04-23
重庆微标惠智医疗信息技术有限公司
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  • Application Information

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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a decoding and error correction method for electronic equipment and radio frequency tags, which is used to solve the problem of low data recognition rate of radio frequency tags in the prior art

Method used

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  • An electronic device and a radio frequency tag decoding error correction method
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  • An electronic device and a radio frequency tag decoding error correction method

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Embodiment 1

[0025] See figure 1 According to an embodiment of the present invention, a method for decoding and correcting radio frequency tags is provided.

[0026] Specifically, as shown in the figure, the decoding error correction method includes the following steps:

[0027] S101, synchronously decoding the I-channel signal, the Q-channel signal, and the I+Q-channel signal output by the IQ demodulation unit, correspondingly outputting three-channel decoded data;

[0028] S102, comparing and correcting the three decoded data in the same period, if there are less than three decoded data errors in the three decoded data, use the correct decoded data of any one of the three decoded data to correspond to standard data symbols to recover the erroneous decoded data;

[0029] S103. Merge the three channels of decoded data in the same period into one channel and save it.

[0030] The above method judges whether there is an error in the decoded data by comparing the decoded data of the two la...

Embodiment 2

[0049] See image 3 , this embodiment provides an electronic device for implementing the method in Embodiment 1 above.

[0050]Specifically, the electronic device is implemented based on FGPA, and is used to implement the above-mentioned decoding and error correction method of the radio frequency tag. As shown in the figure, the electronic device 300 includes a decoding module 310, a data error correction module 320 and a storage module 330 , the decoding module 310 is used to synchronously decode the I-channel signal, the Q-channel signal, and the I+Q-channel signal output by the IQ demodulation unit 400, correspondingly outputting three-channel decoded data; The three-way decoded data is compared and corrected, and if the three-way decoded data has less than three decoded data errors, the standard data symbol corresponding to any one of the three-way decoded data is used to recover The erroneous decoded data; the storage module 330 is configured to combine the three channel...

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Abstract

The invention provides an electronic device and a radio frequency tag decoding error correction method, which are used for solving the problem of radio frequency tag data identification rate in the prior art. According to the invention, whether there is a decoding data error is determined by comparing and correcting the three paths of decoding data; under the condition that error data exists, thestandard data code element corresponding to any path of correctly decoded data in the same period is used for recovering the error data, and the condition that the data cannot be recovered when errorsexist in the two paths of data in the same period is avoided, and therefore the data identification rate is increased.

Description

technical field [0001] The invention relates to the technical field of radio frequency tag data processing, in particular to a method for decoding and correcting radio frequency tags in the field of railways. Background technique [0002] At present, radio frequency tag (RFID) technology is used in railway transportation management to automatically identify the vehicle number. In the automatic identification of the vehicle number, it is necessary to decode the RF signal fed back by the antenna to obtain the vehicle number information. In this decoding In the link, due to complex operating conditions, weak reflected signals, and frequency interference, it will cause changes in the baseband signal returned by the vehicle number tag, resulting in data flow errors and affecting the recognition effect. Therefore, how to improve the recognition rate of radio frequency tag data is a technical problem to be overcome in the technical field. Contents of the invention [0003] In vi...

Claims

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Application Information

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IPC IPC(8): G06K7/00
CPCG06K7/0008
Inventor 段文彬刘艇熊勇
Owner 重庆微标惠智医疗信息技术有限公司
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