ZHANG Bo. Study on distance measuring algorithm suitable for narrow-band ultrasonic sensors[J]. 2007, (7): 111-113. DOI: 10.13873/j.1000-97872007.07.026.
适用于窄带超声波传感器的测距算法研究
摘要
针对传统超声波测距算法不能够在窄带超声波传感器上实现高精度、低成本测距的问题
提出了基于数字信号处理技术的多频测距算法。该算法使用超声波信号的多个频率分量的相位信息来测量距离
在低成本的凌阳单片机以及少量外围电路的支持下
达到了0.1mm的测量精度。
Abstract
The conventional ultrasonic distance measuring algorithms can not implement high accuracy
low cost in narrow-band ultrasonic sensors.To solve the problem
a multi-frequency algorithm is proposed
which uses digital signal processing technology to utilize the phase information of several frequency components of the ultrasonic signal to measure the distance.When implemented on the low-cost SPCE061A microprocessor with a few supporting hardware units