CAJ | 학술논문

设计了一种基于 ADXL345三轴加速度传感器的倾角测量系统。阐述了系统的组成及工作原理，其控制芯片采用超低功耗、高性能单片机 MSP430F149。系统通电后，ADXL345输出一个与加速度成正比的电压值，该电压值经传感器内部 AD 转换器转换成相应的数字信号，而数字信号经 MSP430F149处理运算，可转化成倾角值显示在 LCD 显示屏上。实验表明：与传统的倾角仪相比，该系统结构简单、成本低、功耗小，使用方便，具有较高的灵敏度和响应速度，可满足实际工程应用要求。
설계료일충기우 ADXL345삼축가속도전감기적경각측량계통。천술료계통적조성급공작원리，기공제심편채용초저공모、고성능단편궤 MSP430F149。계통통전후，ADXL345수출일개여가속도성정비적전압치，해전압치경전감기내부 AD 전환기전환성상응적수자신호，이수자신호경 MSP430F149처리운산，가전화성경각치현시재 LCD 현시병상。실험표명：여전통적경각의상비，해계통결구간단、성본저、공모소，사용방편，구유교고적령민도화향응속도，가만족실제공정응용요구。
The titl angle measurement system based on the ADXL345 of three-axis acceleration sensor is introduced ,and the composition and working principle of the system are described .The MSP430F149 microcontroller of ultra-low power and high performance is adopted .Firstly ,the voltage value which is proportional to the acceleration value is output by ADXL345 when the system is powered .Secondly ,the voltage value is converted into the corresponding digital signal by AD converter of the sensor .Thirdly , the digital signal is transformed into the titl angle according to the arithmetic processing of the MSP430F149 .Finally ,the corresponding angle is displayed on the liquid crystal display (LCD) screen .Experimental results show that the design has high sensitivity and response speed compared with the conventional methods .It is suitable for prac-tical engineering application because of simple structure ,low cost and low power consumption .