无线温压补偿式燃气表

摘要

燃气的体积随温度和压力的变化而变化,为了准确计量标准状况下的燃气体积,提出了一种基于MSP430的低功耗温压补偿式燃气表的设计方案.介绍了软、硬件设计方法,燃气表通过温度压力一体式传感器采集温度和压力信号进行温压补偿计算,将燃气工况体积流量折算为标况体积流量.检测数据通过无线通信模块发送至管理计算机.实验和理论计算表明:该表可实现燃气体积温度和压力的修正,并具有低功耗性能.%The volume of gas changes with the temperature and pressure, in order to accurately measure the volume of gas under standard conditions, a design scheme of low-power pressure and temperature compensated gas meter based on MSP430 is proposed. The design of software and hardware is introduced. By temperature and pressure integrating sensor, temperature and pressure signal are collected, the gas meter calculate temperature and pressure compensation and converted gas volume flow under working conditions into volume flow under standard conditions. Detected data is sent to the management computer through wireless communication module. Through experiment and theoretical calculation, the meter can achieve the volume temperature and pressure correction of gas and has low power performance.