摘要
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(I2C)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。
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 I2C 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 dislalacement error of the simulation calculation was less than 2%.
出处
《仪表技术与传感器》
CSCD
北大核心
2015年第2期16-19,共4页
Instrument Technique and Sensor
作者简介
韩盈党（1985-），硕士研究生，研究方向为通信系统与电路。E—mail：hanYingdangai432@163．com
李哲（1963-），教授，硕士，从事计算机应用及嵌入式系统研究。E-mail：xytx03@xupt．edu．cn
