仪表技术与传感器
儀錶技術與傳感器
의표기술여전감기
INSTRUMENT TECHNIQUE AND SENSOR
2015年
2期
16-19
,共4页
微机电系统(MEMS)%加速度传感器%内部集成电路(I2 C)%数据预处理
微機電繫統(MEMS)%加速度傳感器%內部集成電路(I2 C)%數據預處理
미궤전계통(MEMS)%가속도전감기%내부집성전로(I2 C)%수거예처리
Micro Electro Mechanical System(MEMS)%acceleration sensor%inter-integrated circuit(I2 C)%data preprocessing
设计了一种基于微机电系统( MEMS)加速度传感器的数据采集单元,用微处理器通过内部集成电路( I2 C)总线采集加速度传感器ADXL345的数据,对数据进行低通滤波、零偏误差修正以及去除重力加速度等,从而得到载体的运动加速度,并对加速度进行二次积分得到位移,在100 m范围内实测多次,仿真计算位移误差在2%以内。
設計瞭一種基于微機電繫統( MEMS)加速度傳感器的數據採集單元,用微處理器通過內部集成電路( I2 C)總線採集加速度傳感器ADXL345的數據,對數據進行低通濾波、零偏誤差脩正以及去除重力加速度等,從而得到載體的運動加速度,併對加速度進行二次積分得到位移,在100 m範圍內實測多次,倣真計算位移誤差在2%以內。
설계료일충기우미궤전계통( MEMS)가속도전감기적수거채집단원,용미처리기통과내부집성전로( I2 C)총선채집가속도전감기ADXL345적수거,대수거진행저통려파、령편오차수정이급거제중력가속도등,종이득도재체적운동가속도,병대가속도진행이차적분득도위이,재100 m범위내실측다차,방진계산위이오차재2%이내。
An accelerometer data acquisition unit was designed based on Micro Electro Mechanical System ( MEMS) .The date of ADXL345 acceleration sensor were collected with the microprocessor through the I2 C bus, and the data were through lowpass fil-tering, zero offset error correction, gravitational acceleration elimination, etc.As a result, acceleration of the movement of the car-rier was received, and displacement was got through the secondary integral of the acceleration.Through repeated measurements within 100 meters, the displacement error of the simulation calculation was less than 2%.