基于SOPC技术高精度时间数字转换电路的系统设计

摘要

This paper introduces a kind of design method of time-to-digital conversion circuit system with high precision based on SOPC technology. The time-to-digital conversion circuit module of TDC in this circuit system gets the implementation of time measurement circuit module of the combination technology of coarse time and fine tuning time by FPGA. The measuring time precision is up to the level of ns. The embedded Linux operating system after the transplantation and cutting is used to gather, save and manage the photon arrival time data in TDC circuit module, and ensure that the whole system can achieve the high precision of the acquisition, processing and storage of photon arrival time data. Then, directly seeing the work situation of TDC by the display terminal and the normal work of the whole system.%本文介绍一种基于SOPC（System on a Programmable Chip）技术高精度时间数字转换电路系统的设计方法。该电路系统中的TDC时间数字转换电路模块采用基于FPGA的粗时间细时间相结合技术实现时间测量电路模块，测量时间精度高达ns级，移植裁剪后的嵌入式Linux操作系统来采集、处理和存储前端TDC电路模块中光子到达时间数据，整个系统能够实现高精度光子到达时间数据的采集、处理和存储，然后利用显示终端直观看到TDC的工作情况，表面整个系统工作正常。