基于C8051F350单片机的三轴低频加速度的高精度测量  

Measurement of Triaxial Low Frequency Acceleration Based on C8051F350

作　　者：陶福洋[1] 徐明龙[1] 周庆飞[1] 丑世龙 

机构地区：[1]西安交通大学航天航空学院,强度与振动教育部重点实验室,陕西西安710049 [2]中国石油开然气股份有限公司长庆油田分公司,陕西西安710021

出　　处：《仪表技术与传感器》2011年第12期67-68,71,共3页Instrument Technique and Sensor

摘　　要：为了实现微小加速度的测量,提出了一种以SCA610加速度计和C8051F350单片机为核心的高精度加速度测量方法。采用软硬件结合的方式,实现低频振动的三轴加速度的测量。利用C8051F350单片机内置的24位ADC,保证测量精度。通过硬件设计实现的模拟量差分输入和上位机中的数字滤波,抑制了噪声的干扰。实测结果显示,系统加速度测量可准确到1 mg,满足微小加速度的测量需求。According to the requirements of low acceleration level measurement,an acceleration measuring method with high resolution was presented.Based on the hardware and the software,the system mainly composed of the accelerometer SCA610 and the MCU C8051F350 can achieve triaxial acceleration measurement of low frequency vibration.To ensure high precision,it took advantage of the 24-bit A/D converter contained in the MCU C8051F350.Meanwhile,the differential input realized by hardware design and the butterworth analog filtering were utilized to reduce noise affection.The experimental results show that the accuracy of the acceleration measuring system is up to 1 mg,meeting the requirements of low acceleration level measurement.

关 键 词：加速度测量 C8051F350单片机 SCA610加速度计 低频振动 

分 类 号：TM932[电气工程—电力电子与电力传动]