| The aging of population is a prominent phenomenon in China,and monitoring the health of the elderly has become a hot topic in scientific research.Heart rate is an important physiological index to judge human health.Therefore,real-time and accurate heart rate monitoring is of great significance for the prevention and treatment of physiological diseases in the elderly.The focus of this paper is to use infrared array camera to monitor human heart rate in real time.Based on the traditional non-contact infrared sequence image to measure heart rate,adjust the measuring equipment and improve the feasibility of non-contact heart rate monitoring.The algorithm of heart rate measurement is improved to improve the accuracy of heart rate measurement.The main research results are as follows:1.The slight shaking of the tester will cause the problem of heart rate measurement error.In this paper,a tracking algorithm of automatic capture of monitoring area is proposed,and the method of heart rate measurement based on infrared image sequence is improved.This algorithm uses the key point detection technology of face to generate the capture region,which can effectively track the target monitoring region at a fixed distance.The monitoring equipment uses ordinary infrared lens instead of infrared thermal imager,which greatly reduces the cost of research equipment.The simulation results show that the algorithm proposed in this paper can solve the error problem caused by shaking,and the accuracy of the improved algorithm is about 6% higher than that of the traditional method.2.Aiming at the deviation of heart rate measurement results at different distances.This article raises the heart rate measurement method based on binocular array infrared camera,according to the principle of binocular distance measurement,set up a heart rate correction model of heart rate measurement results under different distance,the heart rate measurement result of the tester under different distance tendsto a stable value,the simulation results show that the proposed algorithm solved the heart rate under different distance measurement result inconsistent problems,combining the monitoring area algorithm of automatic capture,measurement accuracy is increased by 2.66%.3.In this paper,the heart rate measurement method based on the array infrared lens is applied to the direction of heart rate detection in People's Daily life.The heart rate of the monitor is timely measured.This monitoring method can be applied to the diagnosis and prevention of heart disease.4.The method based on the infrared array camera proposed in this paper can overcome the disturbance caused by the shaking of the human body and reduce the attitude requirement of the elderly during the measurement.On the other hand,the measurement of heart rate at different distances is realized,which greatly reduces the error caused by distance change,and provides an algorithm basis for the application of infrared array camera to heart rate measurement. |
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