高速DSP在自然伽马能谱全波采集中的应用

High-speed DSP in Full Wave Acquisition of Natural GR Spectrometry Log

介绍了自然伽马能谱测井仪设计原理和软件思路。设计中使用了AD公司的高速多功能数字信号处理器DSP（Digital Signal Processor）以及高速A/D转换器等。这些器件组成的高速、高性能和高可靠的电路，可以同时完成对自然伽马能谱进行高速采样、基线处理、数据传输和能谱处理等。现场测试表明该仪器工作可获得准确可靠的数据。

Introduced is the hardware and software design principle of the natural gamma ray spectrometry log tool. The high speed multi-function digital signal processor （DSP） and high speed A/D converter of AD company are used in the tool design. The high speed, high capability and high credibility electrocircuit, composed of the processor and converter, may complete the high speed sampling for the pulse of gamma ray, base line processing, data transmission, and en- ergy spectrum processing etc. In this way, the designed DSP can improves sampling speed, re- duces system disturbance, simplifies electrocircuit, enhances logging reliability, and has better universality. The site test shows that, this logging tool has high stability, and can acquire accurate and reliable log data.