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Method and device for detecting non-contact cards

A non-contact and card technology, applied in the field of microelectronics, can solve problems such as interference and achieve the effect of reducing mutual interference

Active Publication Date: 2016-10-12
AEROSPACE INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: since there are multiple IC cards on a large thin board, when the above-mentioned reader / writer detects one IC card, it is easily interfered by other IC cards, which may easily cause missed and false detections of IC cards.

Method used

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  • Method and device for detecting non-contact cards
  • Method and device for detecting non-contact cards
  • Method and device for detecting non-contact cards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The application environment of a device for detecting non-contact cards provided by this embodiment is as figure 1 As shown, the specific structure of the device is as follows figure 2 As shown, it mainly includes: a card reading circuit 21, a relay control circuit 22, a relay circuit 23, and an antenna array 24.

[0028] The card reading circuit 21 is used to generate a radio frequency signal and send the radio frequency signal; according to the response information returned by the received non-contact card, the non-contact card is detected, the detection result of the non-contact card is obtained, and the The test result is sent to the upper computer. As the second-generation ID card non-contact card reading circuit, its technical requirements should meet the regulations in GA 450-2003.

[0029] The structure diagram of a card reading circuit provided by this embodiment is as follows image 3 As shown, including the following modules:

[0030] The radio frequency signal pr...

Embodiment 2

[0047] Based on the above figure 1 As shown in the device for detecting non-contact cards, the processing flow of a method for detecting non-contact cards provided in this embodiment is as follows: Image 6 As shown, including the following steps:

[0048] Step 61: The card reading circuit generates a radio frequency signal, and sends the radio frequency signal in a single-channel output mode.

[0049] After receiving the command sent by the host computer, the card reading circuit generates a radio frequency signal. In order to reduce the mutual interference between different non-contact cards when the card reader circuit detects the non-contact card, the strength of the radio frequency signal generated by the card reader circuit is controlled within the set range by changing the value of the chip internal register of the card reader circuit. The radio frequency signal is sent out in a single-channel output mode, and the single-channel output radio frequency signal with the intens...

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Abstract

The embodiment of the present invention provides a method and equipment for detecting a non-contact card. The method mainly includes: the card reading circuit generates a radio frequency signal, and sends the radio frequency signal; the opened relay in the relay circuit conducts the radio frequency signal sent by the card reading circuit to the specified antenna controlled by the opened relay, The designated antenna sends the detection signal to its corresponding specific non-contact card, receives the response information returned by the certain non-contact card, and sends the response information to the reader through the conduction of the opened relay. The card circuit; the card reading circuit detects the non-contact card according to the received response information returned by the non-contact card, and obtains the detection result of the non-contact card. The embodiments of the present invention can reduce mutual interference between different non-contact cards when the card reading circuit detects the non-contact cards.

Description

Technical field [0001] The present invention relates to non-contact card technology in the field of microelectronics, in particular to a method and equipment for detecting non-contact cards. Background technique [0002] The processing of non-contact IC (intelligent card, smart card) card is mainly to weld the card reader chip and antenna coil, and then further process it into a non-contact IC card through lamination and film coating. The welding process of the chip and the antenna coil adopts the hot pressure welding method. Therefore, when the welding process between the chip and the antenna has a problem, it will lead to a defective card. [0003] In the prior art, a method for inspecting the welding process of a contactless card is to use a reader with a small antenna to detect the component layer of the contactless IC card. The shortcomings of this method are: because there are multiple IC cards on a large thin plate, when the above-mentioned reader / writer detects one IC card...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 王红莉杨会平王波刘洋龚文瑾王玲李慧敏
Owner AEROSPACE INFORMATION