【摘要】 为达到工业应用的温度信息传送及监测功能,设计了一种基于电力载波通信技术的新型温度变送器。采用热电偶采集温度,利用MAX6675对模拟温度信号实施冷端补偿、线性化和数字化;通过电力载波技术完成信号调制、传输和解调;最终由STM32单片机接收数据并实时显示温度值,实现了电路系统设计。电路系统验证表明:系统具有不需重复布线、抗干扰能力强、稳定可靠、测量范围广等优点,实现了智能温度变送功能,非常适用于企业生产环境的温度监测。更多还原

【Abstract】 In order to achieve the function of temperature information transmission and monitoring for industrial applications,a design of intelligent temperature transmitter based on power carrier has been designed.Firstly,the temperatures are collected by thermocouple.Then,the cold junction compensation,linearization and digitization of the analog temperature signal are performed by MAX6675.Next,the signal modulation,transmission and demodulation are completed by the power carrier technology.Finally,the data is received by the STM32 microcontroller and the temperature is displayed in real time,so that the design of circuit system is realized.The verification of the circuit system shows that the system has the advantages of no need for rewiring,strong anti-interference ability,stability,reliability and wide measuring range,etc.It realizes the function of intelligent temperature transmission and is very suitable for temperature monitoring in the enterprise production environment.更多还原