ZHANG Hui1, ZHANG Guo-jun1, LIU Xi-bao1, et al. Research on sonar ranging system of T type MEMS vector hydrophone[J]. 2013, 32(1): 50-52. DOI: 10.13873/j.1000-97872013.01.001.
T型MEMS矢量水听器的声纳测距研究
摘要
针对T型水听器灵敏度高
低频特性好
抗干扰能力强等优点
设计开发了一种单片机控制的水下声波测距系统。以声波在水中的传播速度为确定条件
使发声换能器发射声波
水听器接收声波
通过AT89S52单片机对声波测距系统的发射、接收时间的控制
计算出障碍物与水听器之间的距离。测试结果表明:系统可以稳定接收反射声波信号
实现短距离测量
测量误差小于1%。
Abstract
Aiming at advantages of T type hydrophone
such as high sensitivity
low-frequency and strong anti-interference ability
an underwater acoustic ranging system controlled by MCU is designed and developed.Propagation velocity of sound in water is used as determined conditions
sound wave is sent by transducer and received by hydrophone.AT89S52 is used to control time of sending and receiving
distance between obstacles and hydrophone is calculated.Test results show that this system can receive the reflected sound wave signal stability
and achieve short-distance measurement and the measuring error is less than 1 %.