随钻测井仪器的数据采集和控制系统的设计与实现

Design of Data Acquisition and Control System of Well Drilling and Logging Equipmenet Based on FPGA and DSP

在工程钻井和测井中,地层压力数据是描述油气藏类型、计算地质储量的基础数据,井下温度数据是进行温度补偿和系统监测的重要信息;基于FPGA和DSP的数据采集和控制系统,涉及硬件电路设计和软件设计两部分内容;系统采用了ALTERA公司的CycloneⅡ系列FPGA芯片以及TI公司的TMS320F2812数字信号处理器;FPGA实现系统数字电路功能,DSP完成设备通信和系统控制,准确地实现了井下数据的智能化采集和控制,并在此基础上易于扩展和开发完整的随钻测井仪器系统。

In well drilling and logging, Formation Pressure is a key parameters for reservoir describing and estimating. Temperature data under well is an important parameter for temperature compensation and system monitoring. Data acquisition and control system based on FPGA and DSP includes the circuit principle and software design of the system that uses a FPGA of Cyclone Ⅱ series from ALTERA and DSP TMS320F2812 from TI, accomplishes data acquisition and controlling intelligently. FPGA finishes all the data circuit, while DSP completes system control and communication. It＇s easy to develop and upgrade for a logging and drilling equipment.