基于FPGA的高精度红外测温系统的研究与实现

针对红外测温系统测温精度受到环境影响大,拟合曲线和查找表法测量精度低和数据量大,难以在嵌入式系统中实现的缺点,提出了一种双多分段温度标定法,利用温度和灰度的对应关系.对温度和灰度首先进行分段标定,再分别进行多分段标定,并在FPGA上实现了该方法.经实验证明,该方法可以有效地克服测量精度低和数据量大的问题,再利用温度传感器对环境温度的监测进行相应的温度补偿,可减少环境温度引起的测量误差.

Research and Implement of High-Precision Infrared System of Temperature Measurement Based on FPGA

Aiming at the important effects of environment on the temperature measurement precision of the system in the infrared temperature measurement system and the defects of low-precision of measurement and large quantities in the curvefitting and table looking-up,and hard implement in the embedded system,it gives a double multiple-segment method of temperature measurement,which defines the segments of temperature and gray firstly,and then,multiple segments by making use of corresponding relation between temperat...