中图分类号：TP212 文献标志码：A DOI: 10.16157/j.issn.0258-7998.222844 中文引用格式： 王昱钦，王鑫，刘保强，等. K-means聚类-DCT压缩算法在振动传感器中的研究与应用[J]. 电子技术应用，2023，49(1)：81-85. 英文引用格式： Wang Yuqin，Wang Xin，Liu Baoqiang，et al. Research and application of K-means clustering and DCT compression algorithm in vibration sensor[J]. Application of Electronic Technique，2023，49(1)：81-85.
Research and application of K-means clustering and DCT compression algorithm in vibration sensor
Wang Yuqin1，Wang Xin2，Liu Baoqiang1，Li Yi1，Hong Sheng3
1.Jiangsu Automation Research Institute， Lianyungang 222000， China； 2.Unit 32381 of the Chinese People′s Liberation Army， Beijing 100000， China； 3.School of Cyber Science and Technology， Beihang University， Beijing 100191， China
Abstract： In order to prolong the service life of wireless vibration sensors when collecting a large number of high-frequency vibration data, this paper studied the existing vibration data compression algorithms, put forward and analyzed the existing problems, and on this basis, proposed an effective mechanism of K-means clustering-discrete cosine transform (DCT) dual data compression. According to the characteristics of predictive maintenance data, K-means clustering-DCT dual compression algorithm firstly used K-means algorithm to aggregate and classify vibration data, and then carried out DCT compression according to the frequency domain characteristics of vibration signals. The verification results showed that the algorithm significantly improved the data compression efficiency and reduced the transmission of redundant data by aggregating vibration data. In addition, under the condition of the same amount of data, the algorithm had better application performance after improving the peak signal-to-noise ratio compared with other algorithms.
Key words : sensor；low frequency vibration；intermediate frequency vibration；high frequency vibration；K-means clustering and DCT compression algorithm