Design of a Low Noise Signal Disposal for the Infrared Detection
This paper is based on the application of the simple infrared imaging fuze system, and analyzed the low noise signal conditioning module. The output signal of the infrared detector is so faint that it needs to design a signal conditioning circuit to make the signal advantageous for the follow-up processes. The index of the preamplifier is important for the performance of the detector, especially the noise is important. This paper considered on the performance of the detector, to solute the interference problem of noise, designed a low noise signal conditioning circuit with a constant current bias circuit. The operation principle of the circuit was designed. The noise of the circuit was discussed and figured out. The model of the noise was given. The design of circuit was completed and a simulation test was given to the low noise performance of the circuit. This circuit has a simple structure with some characteristics like high output SNR and high detection precision.
Zhaoxin ZHANG Weirong NIE Zhanwen XI
School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu, China
国际会议
The 4th International Conference on Mechanical Engineering and Mechanics(第四届国际机械工程与力学会议)
苏州
英文
271-274
2011-08-11（万方平台首次上网日期，不代表论文的发表时间）