集成电路与嵌入式系统2025，Vol.25Issue(1)：61-66,6.DOI:10.20193/j.ices2097-4191.2024.0045
一种基于恒流源的温度补偿电路设计
Design of temperature compensation circuit based on constant current source
杨景灵 1焦新泉 1李辉景 1姜喜洋1
作者信息
- 1. 中北大学电子测试技术国家重点实验室,太原 030051
- 折叠
摘要
Abstract
Sensors generally employ metals or semiconductors as their sensitive components.When semiconductor materials are subjected to external optical or thermal stimuli,their electrical conductivity undergoes significant changes,leading to temperature drift in the sen-sor's output signals.This temperature drift severely impacts the measurement accuracy and application scope of sensors.To enhance their temperature ability,temperature compensation is essential.Due to factors such as the piezoresistive coefficient being influenced by temperature,pressure sensors exhibit temperature drift,and the temperature sensitivity coefficient is typically negative.The design em-ploys a constant current source with a positive temperature coefficient as the excitation driver for the sensor.The wheatstone bridge,af-ter being compensated through series and parallel resistance methods,is then utilized to perform sensitivity temperature compensation on the sensor.Experimental results demonstrate that after undergoing compensation from this two-stage circuit,piezoresistive pressure sensors display stabilized output signals within a range of-50 ℃ to 75 ℃,with an error reduced to less than 0.35％FS.This approach effectively mitigates the impact of temperature drift,thereby enhancing the sensor's overall performance and reliability across a broader temperature spectrum.关键词
恒流源/传感器/温度漂移/温度灵敏度系数/补偿电路Key words
constant current source/sensor/temperature drift/temperature sensitivity coefficient/the compensation circuit分类
信息技术与安全科学引用本文复制引用
杨景灵,焦新泉,李辉景,姜喜洋..一种基于恒流源的温度补偿电路设计[J].集成电路与嵌入式系统,2025,25(1):61-66,6.
