基于ARM和FPGA的红外热像仪系统设计与研究

红外热成像技术是一种探测与识别目标温度的重要手段。由于目前红外热像仪均采用红外焦平面传感器作为成像核心部件,其成本极其高昂且工作独立性差。针对上述问题,采用阵列式红外传感器作为核心部件,以ARM作为计算协处理单元,以FPGA作为图像核心处理单元,通过设计基于温度值的灰度图像生成与增强算法,在保证实现系统功能的同时降低了系统的复杂度和成本。实验结果表明系统测温精度可达0.1℃,刷新帧率稳定在30Hz,验证了算法的有效性和系统设计的合理性。

System design and implementation of infrared thermal imaging instrument based on ARM and FPGA

The infrared thermal imaging technology is a kind of important means to detect and identify the target temperature. Due to the infrared thermal imager adopts IRFPA as the core component, its cost is extremely high and low work independence. According to the above problems, using infrared sensor array type as the core components, with ARM as the calculation of processing units, with FPGA as the core image processing unit, by designing the grayscale image generation and enhancement algorithm based on temperature, at the same time guarantee the realization of system functions to reduce the complexity and cost of the system. The experimental results show that the system temperature measurement precision can reach 0. 1 degrees Celsius, frame refresh rate steady at 30 Hz, verify the validity and the rationality of the system design of the algorithm.