电法勘探中数据采集设备和计算机通信的实现

Implementation of communication between data acquisition equipment and computers of electrical prospecting

在各种电法勘探过程中,从野外采集的数据往往存储在电法仪中,要对这些数据进行再加工和处理,必须将其以某种方式传送到计算机中。以两种常用电法仪为例详细论述了电法仪通过DB-9 RS-232串行接口与计算机交换信息的原理。给出了具体的通信帧格式、通信缓冲区的数据结构和设置方法,并以流程图的方式说明了计算机接收数据帧后将其暂存入缓冲区和从缓冲区中提取数据帧解析后存入临时数据库表这两个异步通信过程协同工作的机制是如何实现的。

Data gathered from the open country would be always stored within electric devices m process of various electric exploration. For further analysis, they must be transferred into computer. Taking two frequently-used electric devices as example,principles of communication between electric devices and computers which based on DB-9 RS-232 serial interface are discussed detailedly in the paper. Frame format, data structure and realization methods of communication buffers are given. At the same time, the mechanism of team working between two asynchronous communication process that storing data into buffer and extraction data from buffer for further analysis are illustrated through a flow chart.