本文介绍一种无人值守人工爆破观测记录仪,采用编码数字钟控制,定时启动,脉宽调制盒式磁带记录,1980年12月在河南省初次试用,现已发展为8路记录,每路采样率为100样/秒,动态范围优于40分贝,等待功耗低于10毫瓦,总重量小于15公斤,适于野外现场操作。近年又在云南、四川等地使用,结果表明仪器性能良好,稳定可靠。 This article introduces an unmanned manual blasting observation recorder, using coded digital clock control, timing start, pulse width modulation cassette recording, first trial in Henan Province in December 1980, has now evolved into eight records, each way Sampling rate of 100 samples / second, the dynamic range of better than 40 dB, waiting for less than 10 milliwatts of power consumption, the total weight of less than 15 kg, suitable for field operations. In recent years in Yunnan, Sichuan and other places, the results show that the instrument performance is good, stable and reliable.