Three-dimensional Resistivity Data Measurement Network System and Its Addressing Method

Abstract

The invention provides a three-dimensional electrical resistivity data measurement network system. Share-based data acquisition units of a main control computer are distributed in rows with different geographical positions, data acquisition devices are distributed in each row according to the measurement range, each data acquisition device is connected with 16 electrode switching devices, all the data acquisition devices and the main control computer form a primary CAN bus network through a CAN bus, and one data acquisition device and the 16 connected electrode switching devices form a secondary CAN bus network through the CAN bus. Simultaneous parallel acquisition of data is completed according to the CAN bus networks and chip technology, and after the main control computer sends an acquisition command, data of all measuring points are synchronously and simultaneously acquired; when three-dimensional electrical resistivity data are acquired, automatic addressing and locating of the data acquisition devices and automatic addressing and locating of the electrode switching devices are completed before the positions of measured data within a measuring range are measured, and the three-dimensional electrical resistivity data measurement network system has the advantages of being high in acquisition speed, stable in performance, and easy to maintain.

Description

technical field [0001] The invention belongs to the technical field of geophysical exploration, is a direct current method exploration technology applied in the technical field of resource and environmental exploration, and relates to a three-dimensional resistivity data measurement network system and an addressing method thereof. Background technique [0002] Research on electrical prospecting began in the early nineteenth century. With the development of science and the needs of prospecting, the theory and instruments of electrical prospecting are becoming more and more perfect. At the beginning of this century, with the application of large-scale integrated circuits and the further improvement of computing speed, electrical prospecting has begun to develop in a three-dimensional direction, and high-density electrical instruments have developed from the first generation to the fourth generation. Because no matter the current serial measurement method or parallel measureme...

AI Technical Summary

Problems solved by technology

Since both the current serial measurement method and the parallel measurement method use the RS485 bus for control and data transmission, the longest distance is only 1200 meters, the data transmission speed is relatively slow, and the data conversion device is a shared mode, only Perform serial acquisition data and conversion

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