CMOS微处理机1802在大地电磁测深仪器中的应用

THE APPLICATION OF THE CDP 1802 MICROPROCESSOR IN THE MAGNETO-TELLURIC INSTRUMENTATION

在地球物理仪器的设计制造中,微处理机越来越广泛地被应用着。法国地球物理研究中心新近研制的微处理机控制音频大地电磁测深仪就应用了CMOS类1802型微处理机。此种仪器被命定安装在中美洲的尼加拉瓜境内的某火山地区,用于监测地下大地电磁场微变异常。

The author has taken part in the development of the M.T. in strumentation at Centre of Geophysic Researches,France,under the direction of Dr. G. Clerc. The CDP 1802 CMOS microprocessor is applicated in the development, of the M.T. instrumentation in order to decrease the power consumption, to minimise the dimen-ssion and to lighten the weight of the instrumentation.The regultion of the gain of the amplifiers, the operation of the A/D converter, the accumulation of the signals, the coding of the data,the recerding of the data and the transiting of the data to the satelcite are all controlled by the CMOS microprocessor. The description of the application of the microprocessor is divided into three parts, as follows: 1. The fundamental of the instrumentation and the control of the microprocessor,This instrumentation includes essentially a measure station and a surveillance part; the measure station for detecting and treating of the signals and the surveillance post for the surveillance of the measurement.2. The data acquistion system and the CMOS microprocessor.The treatments and the characteristics of the microprocessor are related in this part.3. The main programme of the instrumentation.In this part,one explains the main points of the main programme.