测井资料分析系统接口电路设计

The Hardware Design of the Interface Circuit for a Borehole Data Analyzing System

从一种超声模拟测井记录的井下信号、深度信号送微机处理的实际要求出发，分析井下信号数据采集的工作原理，阐述了与１２位Ａ／Ｄ转换器实时配套工作的双存储体工作时序。通过对深度信号的解调，提出了一种解决４ＦＳＫ解调的有效方法。

In the light of the actual requirements for sending the borehle signal and depth signal inan ultrasonic analogue logging to the microcomputer for processing,the working principle ofthe borehole signal data collection is discussed and the operating time sequence of the double-memory working in real time together with a 12-bit A/D converter is described.By demodu-lating the depth signal,a method for demodulating the 4-FSK signal is proposed.