随着社会人口老龄化加速、长时间工作或学习而引发的亚健康问题加剧、年轻人不良坐站姿增多等，我国脊柱疾病患者及脊柱亚健康人群逐年激增。医学研究表明，长期不正确的身体姿势，不仅是导致各类颈椎病、腰椎病的重要原因，而且严重时容易导致身体变形、局部血液流通不畅、局部肌肉劳损等各类问题。目前市场上已出现多种形式的姿势训练设备，一方面，对其训练效果的评价往往只能根据用户口述、主观评分等进行衡量，缺乏科学有效的定量评价方法。另一方面，目前市场上的姿势训练设备有些通过被动式机械牵拉强行改善坐姿，缺乏个性化，同时效果难以持久。有些装置是主动式提醒用户自己矫正姿势，但大多结构复杂，体积较大，难以真正做到便携式。还有些便携式的矫正装置，功能过于简单，同时缺乏康复学指导，竞争力不足，用户体验效果不佳。针对上述问题，一方面，本文选取了15名脊柱亚健康测试者进行了为期6周的脊柱姿势训练，并基于肌电信号设计了一套完整的定量评价脊柱姿势训练效果的方法，并在此基础上结合测试者姿势标准角度数据及腰疼程度主观评分数据定量探索了脊柱姿势康复理论，具体工作如下： 1、研究得到3层db3小波函数对及所提取的肌电信号具有最佳的去噪效果； 2、设计了肌电信号特征提取算法，提取到肌电信号FER、AV、IEMG、RMS等时域特征及MFs、MPF等频域特征； 3、对所提取的肌电特征参数进行了独立样本t检验及相关的统计分析，并通过对测试者姿势偏离程度和腰疼程度数据进行关联分析，不仅验证了基于sEMG定量评价脊柱姿势训练效果的方法的可行性和有效性，而且从定量的角度对脊柱姿势训练的康复学意义进行了探索。另一方面，基于目前市场上各种脊柱姿势训练设备的优缺点，本文设计了一套智能化便携式脊柱姿势训练系统，具体工作如下： 1、设计开发了脊柱姿势训练设备的软硬件，提高设备使用可靠性及便利性； 2、设计了系统APP的功能及内嵌算法，多个角度提高了APP的交互性； 3、创新性增加系统数据库管理平台设计，极大增强了系统对数据的存储能力； 4、对系统进行了完整的测试，同时通过参加各类创新创业竞赛进一步验证了系统的优越性。关键词：sEMG；预处理；特征提取；定量评价方法；脊柱姿势训练系统

With the acceleration of the aging of the social population, the worsening of sub-health problems caused by long hours of work or study, and the increase of poor sitting and standing posture of young people, the number of patients with spinal diseases and sub-healthy people in China has increased sharply year by year. Medical research shows that long-term incorrect body posture is not only an important cause of various cervical spondylosis and lumbar spondylosis, but also easily leads to various problems such as body deformation, local blood flow, local muscle strain and so on. At present, there are many kinds of posture training equipment on the market. On the one hand, the evaluation of its training effect can only be based on user's dictation and subjective score, and there is no scientific and effective quantitative evaluation method. On the other hand, some of the current posture training equipment on the market forcibly improve the sitting posture by passive mechanical traction, lack of personalization, and the effect is difficult to sustain. Some devices are active to remind users to correct their posture, but most of them are complex in structure and large in volume, which makes it difficult to really be portable. Some portable orthodontic devices have the advantages of simple structure, small size and convenient wear, but their functions are too simple, lack of rehabilitation guidance, lack of competitiveness and poor user experience effect.To solve the above problems, on the one hand, 15 sub-healthy spine testers were selected for 6 weeks of spinal posture training, and a complete set of quantitative evaluation methods of spinal posture training effect was designed based on EMG signals. On this basis, the theory of spinal posture rehabilitation was quantitatively explored by combining the standard angle data of the tester's posture and subjective scoring data of the degree of backache. The physical work is as follows:1. The best denoising effect of the three-layer db3 wavelet function for the extracted EMG signal is obtained.2. Designed the feature extraction algorithm of EMG signal, and extracted the time domain features of EMG signal such as FER, AV, IEMG, RMS and frequency domain features such as MFs and MPF. 3. Independent sample t-test and related statistical analysis were carried out on the extracted EMG characteristic parameters, and correlation analysis was carried out on the data of postural deviation degree and backache degree. The feasibility and validity of the method of evaluating the effect of spinal postural training based on sEMG were verified, and the significance of rehabilitation of spinal postural training was explored quantitatively.On the other hand, based on the advantages and disadvantages of all kinds of spine posture training equipment on the market, this paper designs an intelligent portable spine posture training system. The specific work is as follows:1. The hardware and software of the spine posture training equipment are designed and developed to improve the reliability and convenience of the equipment.2. The function and embedded algorithm of the system APP are designed, which improves the interaction of APP from many angles.3. Creativity increases the design of database management platform, which greatly enhances the system's ability to store data.4. The system has been tested completely, and the superiority of the system has been further verified by participating in various innovation and entrepreneurship competitions.Key words: sEMG; pretreatment; feature extraction; quantitative evaluation; spine posture training system;