CAJ | 학술논문

介绍了以超低功耗单片机MSP430为核心的高精度压力变送器的硬件电路设计,针对压力传感器的温度漂移问题分析了用于温度补偿的BP网络算法,通过MSP430对压力传感器工作环境的温度和压力信号采集作为BP网络的训练与检测样本,构造BP网络进行离线训练,将训练好的网络模型利用C语言编程实现单片机控制核心,研究了单片机软件实现方式;结果表明:利用MSP430单片机减少了系统功耗,其丰富外设减少了所设计变送器的体积,利用BP网络算法提高了变送器的精度,并有很好的抑制零点漂移与时漂的能力.
개소료이초저공모단편궤MSP430위핵심적고정도압력변송기적경건전로설계,침대압력전감기적온도표이문제분석료용우온도보상적BP망락산법,통과MSP430대압력전감기공작배경적온도화압력신호채집작위BP망락적훈련여검측양본,구조BP망락진행리선훈련,장훈련호적망락모형이용C어언편정실현단편궤공제핵심,연구료단편궤연건실현방식;결과표명:이용MSP430단편궤감소료계통공모,기봉부외설감소료소설계변송기적체적,이용BP망락산법제고료변송기적정도,병유흔호적억제영점표이여시표적능력.
The high smart pressure sensor's hardware-circuit design based on Ultra-Low Power MSP430 MCU is introduced.The BP net-work algorithm in temperature compensation caused by the pressure sensor's temperature drift is analyzed,and the collected values of presser sensor's temperature and pressure signals with MCU were used in BP network for offline training.The suited network module is expressed by C language program;the software-implemented method is analyzed.The result shows that the MSP430 MCU can reduce systern power and its rich exterior equipments can reduce the size of pressure sensor,the precision is improved by BP network algorithm,zero drift and time drift are best controlled.