手机USB数据线测试仪的研制

Development of Mobile Phone USB Cable Testing Instrument

摘要:

针对企业生产手机USB数据线时需要进行性能测试方面的要求,设计出一款以FPGA为处理核心,USB接口芯片为控制对象,辅之电源、存储器、键盘、显示、静电保护和反馈输出接口等模块组成的手机USB数据线测试仪；该测试仪按照USB通信协议把USB数据包通过被测数据线进行传输,然后通过计算其传输USB数据包的错误率来判断数据线性能的质量好坏；通过与误码率分析仪、电脑海量传输实测的结果对比和实际应用表明,该仪器较其它测试方法具有测试速度快,测试结果准确等优点,可广泛地应用于USB数据线生产企业。

Abstract:

In order to meet the requirements for production performance testing of USB data line of mobile phone. The testing instrument of mobile phone's USB data line has been designed, It using FPGA as a processing core, USB interface chip as the control object, and was composed by power ,memory, keyboard, display, ESD and feedback output interface module. It judges the performance of the data line by calculating the transmission of USB data packet error rate, which according to the USB communication protocol to USB data packets for transmission through the measured data line. The results by compared to BER analyzer and computer mass transfer measurement and practical applications show that the instrument was better than the other test methods. It has the advantages of fast speed, accurate result, and can widely application.