Mechanical movement aid to nerve damaged and parkinson's using pressure frequency detection (pseudo arm controller)

摘要

This paper proposes a novel method of using external helping mechanism for increasing interactivity of human arm for paralytic patients. Restricting unwanted movements in a Parkinson's patient will also be possible. This external helping mechanism was constructed using pressure sensor for detection of minuet muscle pressure applied by the user. DC coreless motor to control the movement of metallic finger frame, which in turn are connected to the user's arm. Fast and reliable responses, low power consumption pseudo arm controller. MCU is used to acquisition and processing data of the piezoelectric pressure sensors. The device can be worn as a glove by the user. The second part of this arm is a claw designed to give mechanical restriction to the hand of a Parkinson's patients preventing unwanted movement. A MEMS accelerometer and a MEMS gyro in a single chip. The sensor uses I2C bus to interface with MCU. By activation of the claw if frequency of hand movement is above 1-2Hz it is possible to restrict unwanted movement.The frequency of a normal hand tremor is 9-25Hz, of an essential tremor is 4-12Hz and of a Parkinson's patient is 3-8Hz.