CAJ | 학술논문

为了提高测距的红外测距的精度,提出了以MSP430F149单片机为控制核心,红外线发射接收模块为传感器,通过测量红外发射管发出的红外线反射的光线强度来测量距离。此系统将测量的光线强度转换为电压信号,并测得电压信号和距离的对应关系,最后通过最小二乘法进行分段拟合,得到电压信号和距离的关系式以实现测距。该红外测距系统误差达到1 mm,可以广泛近距离测距和汽车防撞系统中。
위료제고측거적홍외측거적정도,제출료이MSP430F149단편궤위공제핵심,홍외선발사접수모괴위전감기,통과측량홍외발사관발출적홍외선반사적광선강도래측량거리。차계통장측량적광선강도전환위전압신호,병측득전압신호화거리적대응관계,최후통과최소이승법진행분단의합,득도전압신호화거리적관계식이실현측거。해홍외측거계통오차체도1 mm,가이엄범근거리측거화기차방당계통중。
In order to improve the accuracy of infrared distance measurement, we use MSP430F149 single chip microcomputer as control core, infrared receiving module as sensor for launch. The distance was measured by measuring the infrared intense of the reflected light which was emitted by infrared transmitting tube. This system will measure the light intensity to convert it into voltage signal,and form a corresponding relationship between the voltage signal and the distance. From the subsection fitting of the least square method,the relationship between the voltage signal and the distance gets for the distance measurement. Our method makes the error of the infrared distance measurement system reache to 1 mm. The system can be used widely to measure distance at close range and for automotive anti-collision system.