摘要
传统的电容测量方法在硬件和软件方面均存在诸多弊端。提出了一种新的电容检测方法。该方法利用555芯片电路,将电容值转变成555输出频率,进而通过单片机对555输出的频率进行测量。仿真结果表明,该方法具有较高的测量精度,可将测量误差缩小到4%左右。
There are many drawbacks in both hardware and software for conventional capacitance measurement methods.A novel capacitive sensing method was proposed.In this method,capacitor value was converted into output frequency of IC 555,which was then measured with microcontroller.Simulation results showed that this method had high accuracy,and the measurement error could be reduced to 4%.
出处
《微电子学》
CAS
CSCD
北大核心
2012年第5期745-748,共4页
Microelectronics
