基于小波变换的汽车电子漏电信号检测系统设计

Based on Wavelet Transform Automotive Electronic Leakage Signal Detection System Design

摘要:

汽车电子漏电信号具有较强的微弱性和瞬时性。当前的漏电信号检测方法无法避免这种微弱性和瞬时性的特点,导致漏电信号检测准确性较低。设计并实现了一种新的汽车电子漏电信号检测系统。该检测系统由硬件部分和软件部分构成。在硬件设计方面重点介绍了基于PCI1712数据采集卡的漏电信号采集模块和滤波电路；软件部分由LADVIEM和MATLAB仿真软件共同编程完成,重点阐述了小波变换滤波器的设计方法,并给出部分漏电信号采集程序。实验结果表明,该系统能够有效提高汽车电子漏电信号检测的准确性和检测效率。

Abstract:

Automobile electronic leakage signal with strong weak sex and instantaneity. Current leakage signal detection method can't avoid this kind of weak sex and instantaneity,the characteristics of leakage signal detection accuracy is low. Designs and realizes a new kind of automobile electronic leakage signal detection system. The system consists of hardware part and software part. In the aspect of hardware design mainly introduces the leakage based on PCI1712 data acquisition card signal acquisition module and a filter circuit; Software part completed by LADVIEM and MATLAB simulation software programming,expounds the design method of wavelet transform filter,and gives some leakage signal acquisition program. The experimental results show that the system can effectively improve the accuracy of the automobile electronic leakage signal detection and detection efficiency. 