Design And Research Of Human Motion Energy Expenditure Monitoring System In The Intelligent Wearable Device

With constant development of smart wearable devices, the important function of human motion energy expenditure monitoring has been gradually caught more attention.In the process of human motion, the measurement of energy expenditure can evaluate the amount and intensity of exercise. And effectively exercise is guarantee of health.Based on the understanding of the current measurement of energy expenditure in depth,a set of human motion energy expenditure monitoring system to monitor the motion energy expenditure in real time which was eventually designed with new sensor LIS3 DH, main module of microcontroller MSP and wireless transmission module of Bluetooth 4.0 chose the method of three-axis accelerometer to estimate energy expenditure. The work is carried out as follows:(1)According to the definition of mechanical work, a formula which involves energy expenditure, acceleration as well as weight has been derivated and successfully use the rectangle method to implement the double integral formula in software was successfully realized.At last the measured data of energy expenditure was acquired.(2)As for the hardware circuit design on the modules of motion sensors and CC2540 USB Dongle. It involves circuit design on the main microcontroller MSP430F5340,acceleration motion sensor LIS3 DH and Bluetooth CC2540. In the module of CC2540 USB Dongle in the module of motion sensors, it involves circuit design on Bluetooth chip CC2540,debugging circuit and USB to serial port.(3)In terms of software design, data communication of Bluetooth master and slave nodes,the work of designing software for the main program of MSP430 module and subprogram of all modules were finished. At last,the calculated result by energy expenditure algorithm was transmitted to the host computer via Bluetooth.( 4) The management software for host computer user center was designed. In this paper,Delphi software platform is adopted. Communication between host and receiving system was realized through SPComm,and data was depicted in the form of diagram.In this thesis, based on the short distance wireless communication technology as well as sensor technology analysis and research, a set of ultra low power expenditure monitoring system of human motion is designed.At last, the accuracy of the experimental design of the system is verified to achieve the desired goal of the design.