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Near field communication test system and method

A near-field communication and test system technology, applied in the near-field transmission system, near-field transmission system in radio frequency identification system, read/write/query/identify near-field transmission system, etc., can solve the lack of NFC test equipment and test methods and other issues to achieve the effect of testing specifications, ensuring the integrity of the transmission, and ensuring the accuracy

Active Publication Date: 2018-11-23
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the lack of NFC test equipment and test methods, the present invention proposes a near field communication test system, test method and listening test method

Method used

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  • Near field communication test system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Proximity coupling device (Proximity coupling device, PCD) simulation test system of the present invention is as figure 1As shown, the test system includes a host computer 1 and a test instrument 2, wherein the test instrument 2 includes a main chip 21 and an analog front end 22, and the analog front end 22 is responsible for generating an electromagnetic field to interact with matching equipment; the main chip 21 includes at least a control unit 211 and processing unit 212 . In the present embodiment, the host computer 1 is a PC; the main chip 21 adopts the Zynq-7000 platform of Xilinx Company, which includes two parts, PS (Processing System) and PL (Programmable Logic), wherein PS is the control unit 211, and its The essence adopts the ARM architecture, and the PL is the processing unit 212, which is essentially an FPGA (Field-Programmable Gate Array) array; the matching device 3 interacting with the analog front end 22 is an NFC tag. The system can complete the comp...

Embodiment 2

[0037] Identical to the system structure of Embodiment 1, the system of the present invention can also perform proximity card (ProximityIntegrated Circuit Card, PICC) simulation, and in PICC simulation, only the matching device is replaced by a PCD device by an NFC tag, correspondingly, the EM10 port of the ARM What is identified is the status frame of the PICC, and the commands issued by the PC are commands related to PlCC simulation.

Embodiment 3

[0039] The system in Embodiment 1 or 2 can also be used as a monitoring device to capture real-time signal interaction on the output field for communication based on the ISO / IEC 14443 protocol, so as to achieve the function of recording a complete communication process, which can effectively detect data interaction. , is an important part of the test. see image 3 , when used as a monitoring device, ARM211 communicates with FPGA212 using the AXI protocol. ARM211 is connected to FPGA212 through internal interfaces AXI_GP Master and AXI_HP Slave. A storage unit is opened in ARM211 to store monitoring data. Its overall flow chart is as follows Figure 4 As shown, ARM211 first initializes the AXI-DMA IP core, then caches the data uploaded by FPGA211 through the internal interrupt trigger mechanism, and adds a time stamp when caching, and stores it in the storage unit opened by ARM211. When uploading the signal, ARM211 will sub-package the data in the storage unit and upload it t...

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Abstract

The invention provides a near field communication test system and method. The test system comprises an upper computer, a master chip and an analog front end. The analog front end carries out electromagnetic interaction with a matching device, thereby realizing near field communication. The master chip comprises a control unit and a processing unit. The control unit is connected with the upper computer, analyzes a command issued by the upper computer, recombines data and issues the data to the processing unit. The control unit and the processing unit are connected through adoption of an internal high speed interface. The processing unit modulates and demodulates the issued command and forms a control signal for controlling the analog front end. According to the system and the method provided by the invention, compatibility test of ISO / IEC14443-3 / 4-layer protocols is realized and physical performance test demands of various different types of near field communication terminal devices under different situations are satisfied, so the test of near field communication terminal performance is relatively standard, uniform and precise and has practical application value.

Description

technical field [0001] The invention relates to the field of near-field communication, in particular to a system and method for testing near-field communication equipment. Background technique [0002] Near Field Communication (NFC) technology was first developed in 2002 by Philips of the Netherlands and Sony of Japan, and is a short-range non-contact identification and interconnection technology jointly promoted by famous manufacturers such as Nokia and Sony. The original 13.56MHz non-contact radio frequency identification (Radio Frequency Identification, RFID) technology and wireless interconnection technology evolved from the integration of RFID readers, RFID tags and point-to-point communication functions, which can identify and data with compatible devices within a short distance exchange. [0003] In recent years, the mobile Internet has developed rapidly, and the demand for short-distance interconnection technology of mobile devices has made NFC technology widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04L12/26H04B5/00
CPCH04B17/391H04B17/3912H04L43/02H04L43/0817H04B5/77
Inventor 张锦南孙恺泽赵泽学陈俊达郑文浩李传岚左勇唐宇郝宏宇王靖涵谭泽斌万艺航张霞颜鑫
Owner BEIJING UNIV OF POSTS & TELECOMM
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