激光器温度控制电路软启动算法研究  

Research on soft start algorithm of laser temperature control circuit

作　　者：郭清华 Guo Qinghua(Chongqing research institute of China coal technology&engineering group corp,Chongqing China 400039;National Key Lab for Gas disaster monitoring and emergency technology,Chongqing China 400037)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400037

出　　处：《现代科学仪器》2023年第4期23-29,共7页Modern Scientific Instruments

基　　金：天地科技股份有限公司科技创新创业资金专项项目(2021-TD-MS008);重庆市技术创新与应用发展重点项目(cstc2019jscx-mbdxX0007);中煤科工集团重庆研究院重点项目(2021ZDXM03)。

摘　　要：为满足激光甲烷传感器在煤矿、天然气等工矿环境应用中6km的传输距离和测量精度,首先设计了一种基于激光吸收峰和工作温度的高精度双闭环负反馈温度控制系统,基于集成的TEC温控芯片开展PI补偿网络设计和系统稳定性、响应特性仿真分析,系统控制误差达减小到约±1.37‰,减小温控系统对激光甲烷传感器测量值的影响;提出了基于逐步迭代逼近的温控软启动算法,整机启动瞬态大电流由0.5A@12VDC减小到0.12A@12VDC,最远传输距离达到6km以上;为激光甲烷传感器在煤矿、天然气等工矿领域的全面推广应用提供了技术支撑。In order to meet the 6km transmission distance and measurement accuracy of the laser methane sensor in coal mines,natural gas and other industrial and mining environments,a design method of a high-precision double-closed-loop negative feedback temperature control system based on laser absorption peak and working temperature was firstly proposed.Reduced to about±1.37‰,reducing the influence of the temperature control system on the measured value of the laser methane sensor.Carry out PI compensation network design and simulation analysis of system stability and response characteristics based on the integrated TEC temperature control chip.A temperature-controlled soft-start algorithm based on step-by-step iterative approximation is proposed,the transient high current of the whole machine is reduced to 0.12A@18VDC,and the longest transmission distance is more than 6km.A temperature-controlled soft-start algorithm based on step-by-step iterative approximation is proposed,the transient high current of the whole machine is reduced to 0.12A@18VDC,and the longest transmission distance is more than 6km.It provides technical support for the comprehensive promotion and application of laser methane sensor in coal,natural gas and other industrial and mining fields.

关 键 词：双闭环负反馈温度控制系统 DFB激光器 热电制冷器TEC 软启动 

分 类 号：O433[机械工程—光学工程]