摘要
该文设计了一种超声波测距数字电路实验装置,使用非单片机的方法设计了一个完整的超声波测距电路,包括超声波发射电路、接收整形电路、时钟电路、计数和显示电路。其中发射电路采用晶体振荡和超声波传感器2种方法,可以提高发射频率的稳定性及系统工作的准确性。
This paper designed a full circuit of ultrasonic telemeter without SCM, which includes the sending circuit, incept circuit, clock circuit, counting and showing circuit. The sending circuit used two methods: crystal surge and ultrasonic sensor, which can improve the stability of the sending phase and the veracity of the whole system.
出处
《实验技术与管理》
CAS
2007年第7期59-60,66,共3页
Experimental Technology and Management
关键词
超声测距
实验装置
晶体振荡
频率稳定性
ultrasonic telemeter
experiment device
crystal surge
frequency stability