基于DMA和RTSI的测井数据采集方案设计

Design of Log Data Acquisition and Control System Based on DMA and RTSI

介绍了采用实时同步总线(RTSI)和DMA数据传输模式的数控测井系统数据采集方案,包括系统深度数据采集和深度中断管理、系统深度控制脉冲和直流信号采集、编码信号采集等,与其它系统采集方案相比,该采集方案实时触发和采集过程是由硬件独立控制完成的,所有测井数据都通过DMA模式传输,真正实现了Windows环境下的测井数据的高速、实时、同步采集,尤其适用于大数据量、高速传输测井项目的实时数据采集和分析处理。

A log data acquisition and control system base d on realtime system integration (RTSI) Bus and DMA data transfer mode is introduced. Compared with s ystems used before, in this system, the realtime trigger and data acquisition procedure are controlled and accomplished by the system hardware, all logging da ta are transferred into RAM by DMA technology. It truly realized the highrate, realtime and synchronizing acquisition of logging data under Windows environm ent. This system is better applicable in logging tool which has a high transfer rate and large amounts of data to acquire and analyze.