摘要
为解决红外测温系统超出有效测温距离导致的测温精度下降问题,从红外热辐射理论出发,提出了一种视场超出目标辐射表面积的红外测温系统误差修正方法。通过计算全视场范围内的辐射照度,获得了对应的红外测温系统电压响应值。依据电压响应值与温度之间的关系,并充分考虑物体表面形貌特征,去除全视场范围内背景温度的影响,得到目标体的表面真实温度值。相对于以往的修正方法,该方法能很好地修正有效测温距离外的物体表面温度,结果与被测物体实际温度更为相近。因此,该方法极大地增强了红外测温系统的工业现场适用性。
As infrared temperature measurement system is beyond effective working distance, measurement accuracy will decrease. To solve this problem, starting from thermal infrared radiation theory, a novel error correction method was proposed, which can be applied to the situation that the field of view is beyond the irradiated area of the ob- ject. Radiation illumination within whole visual field was calculated to obtain corresponding voltage response of infra- red temperature measurement system. According to the relationship between voltage response and temperature and morphology characteristics of object surface, the influence of background temperature within whole visual field was re- moved, and real temperature values of object surface were obtained. Compared with previous correction methods, this method can effectively correct the temperature of object surface when temperature measurement system exceeds effec- tive working distance. And the corrected results are closer to the actual temperature of object. Therefore, this method can greatly enhance the industrial applicability of infrared temperature measurement system.
出处
《激光与红外》
CAS
CSCD
北大核心
2015年第10期1211-1215,共5页
Laser & Infrared
基金
国家自然科学基金项目(No.61107081)资助
关键词
红外热辐射
温度测量
误差修正
视场
thermal infrared radiation
temperature measurement
error correction
field of view
