| 基于CAV424的电容式压力传感器测量电路设计 |
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| 引用本文： | 庞士信,王超.基于CAV424的电容式压力传感器测量电路设计[J].仪表技术与传感器,2011(5). |
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| 作者姓名： | 庞士信 王超 |
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| 作者单位： | 1. 沈阳工业大学,辽宁沈阳110870;沈阳仪表科学研究院,辽宁沈阳110043
2. 沈阳工业大学,辽宁沈阳,110870 |
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| 摘 要： | 随着差动式硅电容传感器广泛应用于各行各业中,对差动电容信号的检测至关重要.文中提出基于CAV424电容检测芯片作为前置检测单元,实现了电容压力传感器测量电路.该电路具有稳定性好,抗干扰性强,且通过非线性补偿有良好的线性.实验结果表明,实际电路与理论分析具有良好的一致性.
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| 关 键 词： | 差动电容 测量电路 |
Measuring Circuit of Capacitive Type Pressure Transducer Based on CAV424 |
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| PANG Shi-xin,WANG Chao.Measuring Circuit of Capacitive Type Pressure Transducer Based on CAV424[J].Instrument Technique and Sensor,2011(5). |
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| Authors: | PANG Shi-xin WANG Chao |
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| Affiliation: | PANG Shi-xin1,2,WANG Chao1(1.Shenyang University of Technology,Shenyang 110870,China,2.Shenyang Academy of Instrumentation Science,Shenyang 110043,China) |
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| Abstract: | With differential capacitance sensor is widely used in industries of silicon,the differential capacitance on signal detection is essential.This paper presented a design based on capacitive sensing chip of CAV424 as a pre-detection unit,it achieved a measuring circuit of capacitive type pressure transducer.The circuit is stable,has good anti-interference feature,and good linear through the nonlinear compensation.The experiment results show that the electrical circuits and theoretical analysis have good consi... |
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| Keywords: | CAV424 |
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