多点快速采集系统中信号可靠转贮技术研究

Signal reliable dump technology research on multipoint fast sampling system

在直径为10cm的受光面上均匀分布有256个光电探测器,需要将这些探测器所反映的激光能量分布及变化情况的数据即时采集并传送到上位机实时显示。以数据采集和快速传输为目的,介绍了以W77E58为CPU的256点快速采集系统构成及工作原理,讨论了以FT245BM为核心构成的USB接口电路进行实时传送的电路原理及实现过程,较好地解决了对多个监测点实时快速采集和快速传送问题。

There are 256 photoelectric detectors distributed uniformly on the light radiated surface with its diameter as lOcm. Data concerning laser energy distribution and changes reflected by these detectors shall be sampled and delivered to the up-computer for real-time display. This paper is intended to introduce construction and operating principle of 256-point fast sampling system with W77E58 as CPU, discuss the circuit principle and process of implementation carried out by USB interface circuit with FT245BM as the core, for the purpose of data sampling and fast transmission, thus solving the problem of real-time fast sampling and fast transmission on multiple monitoring point.