基于刚度信息的取脉深度标准化研究  

Research on Standardization of Pulse-Taking Depth Based on Stiffness Information

作　　者：张垚 李锦[1] 曹开杭 刘甜甜 ZHANG Yao;LI Jin;CAO Kaihang;LIU Tiantian(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2022年第6期849-855,共7页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(52075172);上海市自然科学基金(19ZR1413300)。

摘　　要：针对现有取脉设备以固定深度采集脉搏信号会忽略个体差异的问题,提出了一种融合个体特征的取脉深度标准化方法。该方法基于取脉按压深度和载荷信息建立刚度模型,以刚度为衡量标准进行最佳取脉深度辨识。为验证方法有效性,对6名志愿者左手寸、关、尺三部共进行18次脉搏采集,并提取脉搏信号的峰峰值和近似熵。由脉搏的峰峰值和近似熵可知,17次确定的取脉深度有效,即对应深度脉搏搏动强烈且稳定,证明了该方法的有效性和鲁棒性。In traditional Chinese medicine, doctors usually apply different pulse-taking depths according to the patient’s physique, and then make a diagnosis based on the observed pulse waves. The most common pulse-taking instrument to implement this diagnostic technique is to mechanically extract the pulse by applying fixed pressures for all patients. However, this instrument does not take into account the patients ’ individual characteristics such as gender, age, and skin thickness. In this study, a new method was proposed to find the suitable pulse-taking depth that incorporated the individual characteristics of patients. Firstly, the equivalent stiffness of the skin was extracted from the contact pressure and sensor displacement. Then, the stiffness information was used to identify the suitable pulse-taking depth. To verify our method, pulse waves from 6 subjects were measured at three positions of Cun, Guan and Chi. The pulse feature approximate entropy and peak-to-peak value were extracted of each measurement and the appropriate pulse depth was determined by the new method. The results showed that the pulse-taking depths at different positions of different individuals determined by the new method could fall in the region with large peak-to-peak value and low approximate entropy, which meant that the pulse wave was strong and stable. Thus, the proposed new method could be used to find the suitable pulse-taking depth to overcome the influence of individual characteristics and position of pulse-taking. This method was expected to provide new ideas for in-depth study of the objective of pulse diagnosis in traditional Chinese medicine and the development of new pulse-taking instruments.

关 键 词：脉搏测量 取脉深度 标准化研究 皮肤刚度 个体特征 

分 类 号：TH39[机械工程—机械制造及自动化]