一种基于FPGA的瞬态温度采集系统设计

Contact temperature measurement system based on FPGA

为了实现爆炸温度场恶劣环境下的温度准确测量,设计了一种以FPGA作为微控制器、铠装热电偶为测温元件的温度数据采集存储系统。其坚固的防护结构与热电偶不锈钢铠装使系统在爆炸场拥有极强的生存能力。参数可编程、可多次触发的设计使系统具有灵活、可靠的优点。针对热电偶动态响应不足的问题,使用粒子群算法完成了动态补偿滤波器设计并将其集成到上位机软件中,实验结果表明系统平均静态误差为1.43%,动态误差不超过6.4%。

To achieve accurate temperature measurement in the harsh environment of an explosive temperature field,we designed a temperature data acquisition and storage system.The system uses an FPGA as a microcontroller and armored thermocouples as temperature measurement elements.Its rugged protective structure and stainless steel armor of thermocouple make the system highly survivable in the explosion field.The system has a parameter programmable and multi-triggerable design,making it flexible and reliable.To address the problem of insufficient dynamic response of the thermocouples,we completed the dynamic compensation filter design using particle swarm algorithms and integrated it into the upper computer software.The experimental results show that the system has an average static error of 1.43%and a dynamic error that does not exceed 6.4%.