ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Sows are lateral lying when they are willing to lactate, while they will turn into sternal lying or tilt lying as refusing to lactate. So the lateral lying time can be used as an important parameter to evaluate the maternal behavior of sows. Firstly, a set of monitoring nodes with sensor MPU6050 and bluetooth module was designed to monitor the behavior data at their lactation periods (28d). Then, the attitude angle in feeding time was counted, and the deflection angles of nodes were computed to achieve collision correction. Thirdly, combined with numerical features of each posture, the baseline of acceleration curve was extracted by using Haar wavelet method. Finally, the postures were divided into stand, side and tilt with the algorithm of SVM, and 10 ‘Xiaomeishan’ sows were chosen. The results showed that the deflection was reduced by the correction algorithm of node, meanwhile, the data sets were normalized and the interference of energy movement was removed by wavelet transform algorithm. The test results of 392 samples indicated that the recognition rates of lateral lying on the left and on the right were 65.8% and 90.1%, respectively, while the accuracy of lateral posture and sternal lying were 75.4% and 83.3%, respectively. Above all, the analysis of posture can effectively reflect the lactating willing of sows.