CN113834983B - Interference test method for non-contact smart card - Google Patents
Interference test method for non-contact smart card Download PDFInfo
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- CN113834983B CN113834983B CN202110988522.7A CN202110988522A CN113834983B CN 113834983 B CN113834983 B CN 113834983B CN 202110988522 A CN202110988522 A CN 202110988522A CN 113834983 B CN113834983 B CN 113834983B
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- card reader
- card
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- 238000010998 test method Methods 0.000 title description 6
- 230000006854 communication Effects 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 3
- 230000002452 interceptive effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention provides an interference testing method for a non-contact smart card, which is characterized in that a waveform of direct current superposition interference burrs is generated by an interference device and is loaded on a direct current superposition interference input end, and the direct current superposition interference input end is connected with a direct current output end of a bridge rectifier circuit. An interference antenna for outputting non-contact interference is externally connected to the alternating current input end of the bridge rectifier circuit, and the interference antenna is arranged between the non-contact smart card and the non-contact card reader. When the non-contact smart card is communicated with the non-contact card reader, the interference device is started, and the waveform of the direct current superposition interference burr generated by the interference device is coupled to an interference antenna between the non-contact smart card and the non-contact card reader through the bridge rectifier circuit, so that the electromagnetic interference signal of the interference antenna interferes with the communication between the non-contact smart card and the card reader.
Description
Technical Field
The invention relates to an interference test method for a non-contact smart card.
Background
The contactless smart card and the card reader complete communication between them by electromagnetic signals with a frequency of 13.56 MHz. The non-contact smart card is a passive card, only can passively receive signals, after the non-contact smart card receives signals sent by the card reader, one part of the signals and L/C of the non-contact smart card generate resonance to generate a power signal with instant energy, and the other part of the signals are data communication signals. Because external electromagnetic interference signals need to be coupled in to form interference signals, the contactless smart card is relatively stronger than the anti-interference signals of the contact smart card. The anti-interference test for the contact smart card is paid more attention, and various anti-interference test methods for the contact smart card have been developed, but few anti-interference test methods for the non-contact smart card are special in the industry.
Disclosure of Invention
The invention provides an interference test method for a non-contact smart card. An interference antenna for outputting non-contact interference is externally connected to the alternating current input end of the bridge rectifier circuit, and the interference antenna is arranged between the non-contact smart card and the non-contact card reader. When the non-contact smart card is communicated with the non-contact card reader, the interference device is started, the waveform of the direct current superposition interference burr generated by the interference device is coupled to an interference antenna between the non-contact smart card and the non-contact card reader through the bridge rectifier circuit, and the electromagnetic interference signal of the interference antenna interferes with the communication between the non-contact smart card and the card reader, so that communication error codes are generated in the communication process of the non-contact smart card and the card reader, and abnormal phenomena such as running and flying are caused by a CPU (central processing unit) of the non-contact smart card.
When no non-contact communication interference exists, the communication waveform of the non-contact smart card and the non-contact card reader is a clean burr-free normal communication waveform. When the jammer is started, the waveform of the direct current superposition interference burr is coupled to the interference antenna, so that electromagnetic interference on the communication process of the non-contact smart card and the non-contact card reader is generated.
Drawings
FIG. 1 is a schematic diagram of communication interference during communication between a contactless smart card and a contactless reader
FIG. 2 is a waveform diagram of normal communication between a contactless smart card and a contactless reader
FIG. 3 is a waveform diagram of abnormal communication between a non-contact smart card and a non-contact card reader under interference
Detailed Description
As shown in fig. 1, the jammer 6 generates a waveform of a dc superimposed interference spike, and the waveform of the dc superimposed interference spike of the jammer 6 is loaded onto the dc interference input terminal 1, and the dc superimposed interference input terminal 1 is connected to the dc output terminal of the bridge rectifier circuit 2. An interference antenna 3 for outputting non-contact interference is externally connected to the alternating current input end of the bridge rectifier circuit 2, and the interference antenna 3 is arranged between the non-contact smart card 5 and the non-contact card reader 4, namely, below the non-contact smart card 5 and above the non-contact card reader 4. When the non-contact smart card 5 communicates with the non-contact card reader 4, the jammer 6 is started, the waveform of the direct current superposition interference burr generated by the jammer 6 is coupled to the interference antenna 3 between the non-contact smart card 5 and the non-contact card reader 4 through the bridge rectifier circuit 2, and the electromagnetic interference signal of the interference antenna 3 interferes with the communication between the non-contact smart card 5 and the card reader 4, so that the communication error code is generated in the communication process of the non-contact smart card 5 and the card reader 4, and the abnormal phenomena such as running and flying are caused by the CPU of the non-contact smart card 5.
As shown in fig. 2, a normal communication waveform diagram of the contactless smart card and the contactless card reader is shown, and at this time, the communication waveform of the contactless smart card and the contactless card reader is a clean burr-free normal communication waveform because no non-contact communication interference exists.
As shown in fig. 3, in order to show abnormal communication waveforms of the non-contact smart card and the card reader, an interference antenna is placed between the non-contact smart card and the non-contact card reader, and when the interference device is started, as the direct current superposition interference is coupled to the interference antenna, some burr waveforms are superposed on the communication waveforms of the non-contact smart card and the non-contact card reader, so that electromagnetic interference to the communication process of the non-contact smart card and the non-contact card reader is generated.
Claims (1)
1. A method for testing interference of a non-contact smart card is characterized in that:
Connecting the waveform of the direct current superposition interference burr generated by the interference device with the direct current output end of the bridge rectifier circuit, and connecting the interference antenna with the alternating current input end of the bridge rectifier circuit; the interference antenna is arranged between the card reader and the non-contact smart card; when the card reader is communicated with the non-contact intelligent card, the interference device is started, the direct current generated by the interference device is superposed with the waveform of the interference burr and is coupled to the interference antenna between the card reader and the non-contact intelligent card, and the electromagnetic interference signal of the interference antenna is used for interfering the communication between the card reader and the non-contact intelligent card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110988522.7A CN113834983B (en) | 2021-08-26 | 2021-08-26 | Interference test method for non-contact smart card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110988522.7A CN113834983B (en) | 2021-08-26 | 2021-08-26 | Interference test method for non-contact smart card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113834983A CN113834983A (en) | 2021-12-24 |
| CN113834983B true CN113834983B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110988522.7A Active CN113834983B (en) | 2021-08-26 | 2021-08-26 | Interference test method for non-contact smart card |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978378B (en) * | 2022-04-14 | 2023-10-13 | 北京中电华大电子设计有限责任公司 | Communication interference test off-line device for telecom subscriber identity module card |
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| JP2006146425A (en) * | 2004-11-17 | 2006-06-08 | Toshiba Corp | Communication control device, communication control method and communication terminal |
| JP2009070082A (en) * | 2007-09-12 | 2009-04-02 | Nec Tokin Corp | Noncontact ic card reader/writer |
| CN101436258A (en) * | 2007-11-13 | 2009-05-20 | 卜鑫友 | Non-contact IC card technology for data communication by connection point and read-write machine |
| CN102830300A (en) * | 2012-08-06 | 2012-12-19 | 大唐微电子技术有限公司 | Testing system and method for realizing non-contact type intelligent card chip |
| CN104156754A (en) * | 2014-07-22 | 2014-11-19 | 赵伊宁 | Burglarproof device for non-contact IC card |
| CN104539028A (en) * | 2014-11-12 | 2015-04-22 | 江苏省东方世纪网络信息有限公司 | Electromagnetic field energy collection device and communication device |
| CN206075305U (en) * | 2016-07-19 | 2017-04-05 | 深圳市鹏力凯科技有限公司 | A kind of Non-contact Media Reader and the two-in-one electronic installation of contact type intelligent card |
| CN106646039A (en) * | 2016-12-02 | 2017-05-10 | 北京中电华大电子设计有限责任公司 | Non-contact intelligent card testing device and method |
-
2021
- 2021-08-26 CN CN202110988522.7A patent/CN113834983B/en active Active
Patent Citations (8)
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| JP2006146425A (en) * | 2004-11-17 | 2006-06-08 | Toshiba Corp | Communication control device, communication control method and communication terminal |
| JP2009070082A (en) * | 2007-09-12 | 2009-04-02 | Nec Tokin Corp | Noncontact ic card reader/writer |
| CN101436258A (en) * | 2007-11-13 | 2009-05-20 | 卜鑫友 | Non-contact IC card technology for data communication by connection point and read-write machine |
| CN102830300A (en) * | 2012-08-06 | 2012-12-19 | 大唐微电子技术有限公司 | Testing system and method for realizing non-contact type intelligent card chip |
| CN104156754A (en) * | 2014-07-22 | 2014-11-19 | 赵伊宁 | Burglarproof device for non-contact IC card |
| CN104539028A (en) * | 2014-11-12 | 2015-04-22 | 江苏省东方世纪网络信息有限公司 | Electromagnetic field energy collection device and communication device |
| CN206075305U (en) * | 2016-07-19 | 2017-04-05 | 深圳市鹏力凯科技有限公司 | A kind of Non-contact Media Reader and the two-in-one electronic installation of contact type intelligent card |
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| CN113834983A (en) | 2021-12-24 |
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