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测井作业时 ,由于现场要实时解释多种测井数据 ,地面PC机的CPU非常紧张 ,为此设计了一种串行测井数据的PC机接收卡。采用 89C51单片机作为PC机的前级CPU ,分担同步的解码、串 /并转换及一些数据处理工作 ,将并行数据送入PC机。当有深度信号到来时 ,单片机立即进入深度中断服务程序 ,发送包括深度信息的一帧完整的数据信息到PC机 ,完成测井数据的实时解码与传输。软件解码并实时进行误码判断 ,更加提高了系统的可靠性
Logging operations, due to the field to explain a variety of real-time logging data logging, ground-based PC CPU is very tight, for which a serial logging data PC receiver card design. Adopt 89C51 one-chip computer as the pre-stage CPU of the PC, share the synchronous decoding, serial / parallel conversion and some data processing work, send the parallel data into PC. When a deep signal arrives, the microcontroller immediately enters the deep interrupt service routine and sends a complete frame of data including depth information to the PC for real-time decoding and transmission of log data. Software decoding and real-time error code to judge, more to improve the reliability of the system