LI Zhen-bo, LI Jiang, LIU Bei-ying. Design of measuring platform for static performances of digital micro-accelerometers based on single-chip microcontroller[J]. 2009, 28(2): 87-90.
LI Zhen-bo, LI Jiang, LIU Bei-ying. Design of measuring platform for static performances of digital micro-accelerometers based on single-chip microcontroller[J]. 2009, 28(2): 87-90. DOI: 10.13873/j.1000-97872009.02.004.
基于单片机的数字微加速度计静态测试平台设计
摘要
设计了一种新型的PWM数字微加速度计自动测试平台。该技术基于AT89S52单片机
适用于重力场条件下PWM数字输出的加速度计的快速测试。系统脱离了计算机的辅助计算和控制
利用单片机自动控制测试过程
并独立完成数据的拟合计算
极大地简化了测试系统
并利用此平台完成了ADXL202E数字加速度计静态模型的辨识任务
标定了加速度计的标度因数和零偏2个重要的性能指标。该测试平台测试精度优于2mgn。
Abstract
A new automatic test platform for micro-accelerometers with PWM digital output is designed.The platform
based on an AT89S52 single-chip microcontroller
is able to perform fast test of PWM output micro-accelerometers at gravitational field.This platform carries out automatic control and test only with a single-chip
and completes relative calculation alone without computer’s aid.It simplifies the test system considerably
and accomplishes identification of the static model for ADXL202E
a PWM output digital micro-accelerometer.And two important parameters
scale factor and bias instability
can be derived from the model.The precision of the platform is above 2 mgn.