测试技术学报2025，Vol.39Issue(4)：467-474,8.DOI:10.62756/csjs.1671-7449.2025065
滚筒洗衣机泄露气密检测方法研究
Research on Pneumatic Detection Method of Drum Washing Machine Leakage
李鹏 1陆永华 1陆元华 2卢善周 3马坤3
作者信息
- 1. 南京航空航天大学 机电学院,江苏 南京 210016
- 2. 中国石化销售股份有限公司 江苏石油分公司,江苏 南京 210009
- 3. 无锡小天鹅电器有限公司,江苏 无锡 214028
- 折叠
摘要
Abstract
To overcome the limitations of current water injection methods for detecting washing machine leaks and enhance the measurement efficiency of whole-machine sealing,a novel air-driven leak detection scheme based on direct pressure testing technology was proposed.A test chamber fixture and seals tai-lored to the internal dimensions of the detergent box are innovatively designed.Based on the STM32F1 microcontroller,the collection and preprocessing of air pressure analog signals were carried out for control-ling the airtightness testing process.A denoising method based on moving average and wavelet analysis was introduced during the preprocessing stage,and the required frequency band characteristics were extracted using Fast Fourier Transform.Multi-aperture simulated leak tests demonstrated that the fre-quency amplitudes remained at the lowest levels within the 0.120～0.963 Hz band when no leaks were present.A leak determination criterion was established based on the low-frequency characteristics of the signal,and the reliability of the proposed method and criterion was verified through leak detection tests on multiple washing machines at a factory.关键词
泄漏检测/结构设计/嵌入式系统/小波去噪/傅里叶变换Key words
leakage detection/structural design/embedded systems/wavelet denoising/Fourier transform分类
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李鹏,陆永华,陆元华,卢善周,马坤..滚筒洗衣机泄露气密检测方法研究[J].测试技术学报,2025,39(4):467-474,8.
