低功耗平面电容传感器介电测量系统设计  

Design of low power consumption dielectric measurement system for planar capacitive sensor

作　　者：沈超[1] 黄云志[1] 刘福临 SHEN Chao, HUANG Yun-zhi, LIU Fu-lin(School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China)

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《传感器与微系统》2018年第9期50-52,共3页Transducer and Microsystem Technologies

基　　金：安徽省重大教学研究项目(2015ZOJY012);安徽省级大学生创新训练计划项目(2017CXCYS028)

摘　　要：提出了基于平面电容传感器的低功耗介电测量系统的设计方法。系统以MSP430单片机为核心,硬件电路包括电容测量模块、人机交互模块、电源管理模块等。软件包括初始化模块、数据采集模块、中断模块、计算显示模块等;研究了平面电容传感器参数设计方法,并建立介电常数的计算模型。系统应用于复合材料检测,实验结果表明:系统功耗低、重复性好,能有效实现材料损伤检测及介电常数的测量。A low power consumption dielectric measurement system based on planar capacitive sensor is proposed. The hardware and software of system are designed based on MSP430. The hardware includes capacitance measuring module,human-computer interaction module,and power management module. The software includes initialization module,data acquisition modules,interrupt module,calculation modules and displaying modules. The calculation model for dielectric constant is set up. The system is applied in composite materials testing. The results show that the system has low power consumption and good repeatability. The NDT and dielectric constant measurement of materials can be implemented effectively.

关 键 词：平面电容传感器 介电测量 低功耗 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]