不同环境温度对电路测温系统测量误差影响的研究

Research on Influence of Different Ambient Temperature on the Measurement Error of Circuit Temperature Measurement System

温漂是影响电路系统稳定性和测量结果准确性的重要因素。本文通过选用低温漂的元器件以及设计温度补偿电路来减少温漂对项目的影响,通过方案验证:环境温度从(-20~40)℃变化,整个测温系统波动度控制在±0.05℃范围内。测试结果方法有效,且能够极大地减少温漂带来的影响。

Temperature drift is an important factor affecting the stability of circuit system and the accuracy of measurement results.In this paper,the influence of low temperature drift on the project is reduced by selecting low temperature drift components and designing temperature compensation circuit.The scheme is verified:the ambient temperature changes from(-20~40)℃,and the fluctuation of the whole temperature measurement system is controlled within±0.05℃.The test results show that the method is effective and can greatly reduce the impact of low temperature drift.