关键词:超声波;换能器;测距;AT89C2051单片机;温度补偿Abstract
This article introduces the functions and characteristics of AT89C2051, and I have considered the design approach of the range finder and some questions needed to be noticed, formulated the program to achieve the design and given graphs of the software and hardware design based on the analysis of ultrasonic range finding theory. After the proofread and correct of the system, it’s precision is 0.1m. Because of the strong point of ultrasonic energy consumption slow, medium of communication in the longer distance, thus frequently used ultrasonic distance measurement, such as the range finder and level measurement and so on can be achieved by ultrasound. The system has some features:ease of control,stability of operation,highness of precision and distinctness of program process, etc. And measurement accuracy can meet the practical requirements of industry, in the mobile robot has been developed on a wide range of applications.