基于数字电极技术的电法测量系统

本文分析了电阻率层析成像系统的阵列电极的特征和现代地震勘探采集系统的数字检波器技术,提出了基于数字电极的电法测量系统设计,这种设计将实现电法测量的一次创新;然后较为详细讨论了数字电极的电路结构、系统的总体设计、控制通信网络拓扑结构和其他关键技术,该系统的通信网络结构基于DeviceNet现场总线;最后描述了该系统的功能特点,它不仅用于电阻率、激发极化、相位以及复电阻率的等多种方法,而且可用于时间域或频率域中的2D、3D电法勘探,并同时测量多种装置的数据,实现拟地震方式的勘探.

The electrical measurement system based on digital electrode

We analyze the features of the electrode array of the resistivity tomography system and the development of digital detectors of the modern seismic acquisition system and introdue the characteristics of digital eletrodes. Then we put forward the design of an electrical measurement system based on digital eletrodes, which will bring about the innovation in electrical survey. The circuit structure of digital electrodes, communication network, the other important techniques and the design of the electrical measurement system are also described. The controling communication network is designed based on DeviceNet Fieldbus technology. Finally we discuss the characteristics of eletrical measurement based on digital electrodes, which can not only be used for resistivity, IP, phase and complex resistivity etc, but also be applied to 2D and 3D electrical measurements in the time domain or frequency domain. This system can measure more parameters of varieties of survey assembly at the same time, which will achieve electrical survey similar to the seismic exploration way.