This sensor is built around the open source schematic of the Ardunio Pro Mini and the seperate parts we're tested sepertly and the final board was printed from oshPark. This is an experemential sensor that makes sure patients roll over within a fixed interval. The model uses a state machine with two states: COUNTING_STATE, and a ROTATING_STATE. The counting state samples the direction of the acceleration vector and during the ROTATING_STATE, the arc angle between the current vector and the sampled data from the counting state determins the rotation of the device from the resting state. A average filter is sampled from the current resting angle of the sensor is sampled by taking 20% of the current sample vector and 80% of the current resting angle. This is a mitigation strategy that avoids sampling from sudden movments and affecting the angle of the sensor. The counting state is reset if the devaition from the scalar vector is greater then .35 g's.
Tools:
building cpp code scons build. The compiled code produces a hex
avrdude -c <programmer> -p atmega328 -b 57600 -U flash:w:main.hex -U lfuse:w:0xff:m -U hfuse:w:0xd1:m -U efuse:w:0xff:m
The current maintainers of this repository are:
- Michael Pollind polli104@mail.chapman.edu
/**
* Copyright 2018 GaitRehabilitation
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