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基于Invensense九轴传感器MPU-9250的穿戴式感应方案

 2015-07-29

采用Invensense九轴动作传感器MPU-9250,搭配Ti的MSP430微控制器,透过预载MCU上的Library,可进行九轴的动作侦测,并透过蓝芽模块将温度、湿度、压力、近接感测、环境光源等讯息,传回手机并显示于应用程序上,透过情境感知可应用于health & fitness的开发。

 

【方案方块图】

方案方块图

【系统功能】

① 9-Axis motion tracking with Invensense’s algorithms.
② 16bit MCU for health & fitness application
③ Support Bluetooth4.0 (Low energy) with Android and iOS
④ Temperature, humidity, light, proximity, ultraviolet and pressure sensing

【方案特性】

① Motion device :
Invensense MPU-9250
Signal chip, 9-axis(Gyro+Accel+Compass) by I2C
Integrated Digital Motion Processor(DMP)
Invensense MotionFit SDK with eMPL library
② Microcontroller :
TI MSP430F5528
16bit RISC SoC
③ Pressure sensor :
ALSP HSPPA032A
④ UVI(ultraviolet index) & light/proximity sensor
Capella CM3512 & CM36682E
⑤ Temperature/humidity sensor
Sensirion SHT21