The Signal Acquisition Of Elbow Joint Control Muscles And The Analysis Of The Cause Of "tennis Elbow"

As early as the 20 th century,doctors found in tennis players that many athletes had sore symptoms in the elbow joint and the posterior elbow tendon.This symptom affects the normal training of athletes and makes it impossible to compete fiercely.The disease was summarized by clinical medicine and eventually named "tennis elbow".This is a sports-induced disease that has caused great problems for professional tennis players and amateurs.The current research on "tennis elbow" is mainly limited to physiological and pathological aspects,and cannot effectively prevent the occurrence of disease.In the professional tennis training process,due to excessive training of athletes or incorrect training posture,it is very easy to suffer from "tennis elbow".Once suffering from this disease,it is not only reflected in the pain of the elbow,but also may lead to the end of its sports career.This paper intends to design a detection device that conforms to the physiological and functional characteristics of the human body.It collects the sports data of the tennis player when hitting the ball,compares the standard sports force signal,and analyzes the force of the athlete when hitting the ball.The piezoelectric signal and the physiological relationship between the muscle groups,timely detection of irregular ball hitting,to prevent tennis players and enthusiasts from suffering "tennis elbow".However,during the tennis movement,the upper arm and the forearm together form a geometric model connection mechanism,so that the two can coordinate movement,the elbow joint is the key link between the two.Therefore,the study of the cause of "tennis elbow" is first of all a physiological study of the elbow joint and the control muscle group.Therefore,on the basis of ergonomic research,it is necessary to design a muscle pressure sensor with high output impedance,small temperature drift,light weight,good adhesion,corrosion resistance and stable performance;The characteristics of the muscle group,as well as the structural composition of the elbow joint,the characteristics of the movement mechanism,the relationship between the various control muscle groups of the elbow joint,determine the function and function of each muscle during the force,and analyze the muscles of the tennis player during the swing.Force points to determine the placement and installation of the sensor array.After the sensor design and array layout work,it is necessary to study the effective acquisition,signal processing,signal analysis and feature extraction of relevant signals to obtain stable and reliable characteristic signals.After the actual test of the elbow joint of the tennis player..The feature value is extracted,and the standard signal of the correct force when the elbow joint control muscle group swings is compared with the non-standard force signal,which indicates that the sensor and the array can effectively and accurately collect the motion information of the elbow joint.And can distinguish between correct and abnormal power signals.The design of the sensor and array can meet the design requirements.According to the analysis of the data,the commonality and difference of the wrong movements of the tested objects on the relevant muscle groups can be observed,which has a good guiding effect on the training of tennis players in the future.