多频可控源音频大地电磁法观测系统中平行接口技术

A Study of Parallel Interface Technology in Multi-frequency Controlled Source Audio-frequency Magnetotellurics Observing System

讨论了采用标准并行接口技术对多频可控源音频大地电磁法 (ControlledSourceAudio FrequencyMagnetotel lurics,CSAMT)观测系统实施控制 .采用该技术控制CSAMT观测系统 ,可增强观测系统的抗干扰能力和数据传输实时控制的可靠性 ,且外接引线可较长 ,为野外操作提供了方便 ,该技术新颖 ,实用 .同时 ,介绍了在保持微机原有功能不变的前提下 ,只需简单的软硬件 ,便可扩展微机功能 ,使多频CSAMT观测系统数据输入 /输出实现多位转换 .

The standard parallel interface technology used to control the multi frequency CSAMT (Controlled Source Audio Frequency Magnetotellurics) observing system, which increases the anti jamming ability and data transmission reliability of the multi frequency CSAMT observing system, has been discussed. The external down lead can be stretched more longer after this interface technology being used, which offers convenience for field operation of CSAMT observing system. Therefore, this interface technology is novel and practicable. Besides, the data I/O of multi frequency CSAMT can be realized multi bits transfer by simple soft hardware to expand PC function while holding the PC inherent function.