Design and Implementation of a Batteryless Pedometer based on a Motion Tracking Sensor

Abstract

This paper proposes a batteryless pedometer device. It is a wearable device which can sufficiently collect motional energy during human movements and convert it into electrical energy to power the pedometer. To achieve functions mentioned above, this paper first introduces a low-cost implementation scheme for the pedometer, including sensor, microprocessor, and a wireless communication protocol. Secondly, the paper gives a scheme about motion energy capture and power supply, including a swing energy capture device that match the motion characteristic and an efficient power management unit. Lastly, a prototype of the pedometer device and its corresponding user interface are established to verify the feasibility of above sections from the perspective of functional realization.