Research On Human Falls Monitoring Based On Wearable Sensors Technique

With the launch of Google glasses,smart watches,smart shoes and other intelligent consumer terminals,wearable devices launched a new round of the tide of science and technology,computer application is currently one of the most popular and potential technology.The current wearable device related research is mainly focused on the improvement of the algorithm and the improvement of the hardware.Experimenters selected to install the wearable devices on the footsteps,shoulders,waist and so on.In recent years,there are almost no relevant research on the performance of wearable device on different parts of human body.In this paper,we discussed the best position of human body where the sensor module placed,and designed comparison experiments to verify from accuracy and comfort.The fall detection system consists of a sensor module,a mobile client module and an interactive module.The sensor module includes an acceleration sensor,a magnetometer and a gyroscope,which obtain the base data(acceleration,angular velocity,magnetic field strength,etc.)of the sensor module mounting site.The data was passed through the Bluetooth communication to the client module,then we calculated the changes of acceleration and angle.We can determine whether the human body had a fall action through the fall detection algorithm.Finally,the system has alarm function,once the fall action has been detected,it would give out the alarm.The main contributions of this paper are as follows: 1.An wearable health monitoring system based on Bluetooth communication was designed and completed;2.A high-reliability fall detection algorithm was achieved,which is easy to understand;3.We discussed the accuracy,reliability and comfort of the system when it placed on different position of human body and designed experiments to verify it.The hardware part of the system is composed of acceleration sensor and magnetometer.The software part mainly realizes the Bluetooth communication and data visualization.We use the acceleration sensor to get the acceleration of the human test site changes,the magnetometer to get the human body test site angle changes(Euler angle),by the acceleration and angle changes through the wrestling detection algorithm to obtain whether the wrestling judgment results.Finally,the wearable equipment can be installed on different position of the human body to determine the accuracy and comfort of the best position to wear this sensor equipment.