基于无线通信的井下低功耗压力传感器设计  

Design of Mine-used Low-power Pressure Sensor Based on Wireless Communication

作　　者：潘长城[1] 常青[1] 王耀力[1] 

机构地区：[1]太原理工大学信息工程学院,山西太原030024

出　　处：《仪表技术与传感器》2016年第9期17-21,25,共6页Instrument Technique and Sensor

基　　金：山西省自然科学基金资助项目(2013011015-1)

摘　　要：针对有线矿压监测系统存在的缺陷,提出了一种低功耗矿井无线压力传感器设计方法与实现电路。该方法从低功耗的视角,对传感器节点的硬件电路、软件流程和系统时钟进行了优化设计研究,硬件电路以MSP430为核心,首先通过对各功能子模块配置数字开关及中断调度方法,有效增加了核心电路的休眠时间以节省能源消耗;其次,在保证性能的前提下,调配主系统时钟的时钟源及降低时钟频率,减小了CPU运行时的功耗;最后,给出了扩散硅压力传感器的输入输出关系及不确定度的形式化表达式。传感器测压范围是0~70 MPa,测试结果表明,节点测压最大误差为0.1MPa。该数字传感器具有体积小、抗干扰性强、易维护、安全性高等特点。To compensate the flaws of the wired mine pressure monitoring system,a design method and implement circuit of mine-used wireless low-power pressure sensor were proposed in this paper.The hardware circuit, software process and system clock were optimized for low power in the study, MSP430 was used as the core of hardware circuit, the digital switch of the various func- tional sub-module and the method of interrupt scheduling were configured firstly, which effectively increased the sleep time of the core circuitry and saved the energy consumption; Secondly, to reduce the power consumption during CPU runtime, the main system clock source was deployed and clock frequency was reduced.Finally,the formal expression of the diffused silicon sensor input-out- put relationship and uncertainty were given in the paper.The range of the pressure sensor is 0-70 MPa,the test result shows that the maximum error of pressure is 0.1 MPa.The digital sensor has the characteristics of small, strong anti-interference, easy mainte- nance, high safety and so on.

关 键 词：矿压监测 传感器 低功耗 MSP430 无线通信 中断调度 扩散硅 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]