摘要
针对传感器远距离馈电的线损问题,结合其线损产生的原理及特点和工程船舶应用的实际要求,提出了一种补偿其线损的方法,即通过动态调整供电模块的输出电压,来补偿由于温度及距离引起的传输线电压损耗,并设计了专用的负反馈补偿电路在对电路补偿原理及效果进行理论分析的基础上,实际制作了该负反馈补偿电路,并进行了现场测试,结果表明在-40~55℃的温度范围内,100~500米距离范围电路输出的非线性误差不超过1.3%,并且不随温度及距离的变化而变化.目前该测量与控制系统已实际应用于多艘工程作业船舶.
Aiming at a solution to online loss of energy for long distance sensor power supply, with its characteristics and the actual use requirements of ship applications, a new method was brought for to compensate the online energy loss caused by the increasement of the line resistance as the increasement of temperature and distance. A negative feedback based compensation circuit is designed for the purpose of dynamic adjusting output voltage of the power supply module. This circuit was designed based on theoretic...
出处
《电子器件》
CAS
2007年第6期2036-2038,2042,共4页
Chinese Journal of Electron Devices
关键词
远距离供电
负反馈
补偿电路
线损
long distance power supply
negative feedback
compensation circuit
online loss
