摘要
针对ZPW-2000R型移频自动闭塞系统接收机生产中的质量测试,介绍了系统对于关键测试项目—接收机交流输入阻抗的测试过程与方法.系统采用高速DSP芯片TMS320F2812作为主控芯片,由AD9833信号发生器模块产生相应测试信号,由F2812内部AD采集待测信号,通过校正算法和数字滤波器进行交流数据处理.通过分压原理间接测得接收机的交流输入阻抗.经实验验证,系统测量交流输入阻抗时效率高、测量结果准确,具有较高的实用价值和推广意义.
For the production quality test of receiver of ZPW - 2000R frequency - shift auto- matic block system, this paper introduced a method of detecting input AC impedance. The system adopted high speed DSP chip TMS320F2812 as the main control chip, generated the corresponding test signal through AD9833 signal generator module, measured the signal through AD in F2812 and corrects the AC data through digital filter. Finally through the dis- tribution of voltage, the system got the result of AC input impedance. With the experimental verification, the system had high efficiency, accurate results in the measurement of AC input impedance which had a high practical value.
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2013年第2期180-184,共5页
Journal of Harbin University of Commerce：Natural Sciences Edition
