摘 要：随着社会经济的发展，交通运输业日益兴旺。汽车的数量也在大幅攀升

Abstract: With the development of social economy, the transportation industry is booming day by day. The number of cars is also rising sharply, and traffic congestion is becoming more and more serious. Car crashes have frequently occurred, causing inevitable personal injuries and economic losses. In response to this situation, design a fast-responsive, highly reliable and more economical car. Anti-collision warning system is imperative. Ultrasonic distance measurement method is the most common distance measurement method. This article introduces a reversing anti-collision alarm system designed by ultrasonic distance measurement method. The content of the thesis is based on the design of the AT89C51 single-chip reversing collision avoidance system. It mainly uses the characteristics and advantages of ultrasonic to integrate the ultrasonic ranging system and the AT89C51 single-chip microcomputer to design a reversing collision avoidance alarm system based on the AT89C51 single-chip microcomputer. The system adopts the method of combining software and hardware, and has the characteristics of modularization and multi-purpose. The paper outlines the development and basic principles of ultrasonic testing, and expounds the principles and characteristics of ultrasonic sensors. Some main parameters of the system are discussed, and on the basis of introducing the functions of the ultrasonic ranging system, the overall composition of the system is proposed. Through the comparison of a variety of transmitting and receiving circuit design schemes, the best design scheme is obtained, and the principle of each design unit of the system is introduced. The chips that make up each system circuit are introduced, and their working principles are explained. The paper introduces the software structure of the system and realizes system functions through programming. Finally, through the error analysis of the system, the improvement plan of the system is given. <br>【Keywords】Single-chip microcomputer ultrasonic distance measurement senso

Abstract: with the development of social economy, the transportation industry is becoming more and more prosperous. The number of cars is also rising sharply, traffic congestion is becoming more and more serious, and car crashes occur frequently, resulting in inevitable personal casualties and economic losses. In view of this situation, it is necessary to design a fast response, high reliability and more economical automobile anti-collision early warning system. Ultrasonic ranging method is the most common distance ranging method, This paper introduces a reverse anti-collision alarm system designed by using ultrasonic ranging method. The content of this paper is the design of reversing anti-collision system based on AT89C51 single chip microcomputer. It mainly uses the characteristics and advantages of ultrasonic, combines the ultrasonic ranging system with AT89C51 single chip microcomputer, and designs a reversing anti-collision alarm system based on AT89C51 single chip microcomputer. The system adopts the method of combining software and hardware, and has the characteristics of modularization and versatility. This paper summarizes the development and basic principle of ultrasonic testing, and expounds the principle and characteristics of ultrasonic sensor. Some main parameters of the system are discussed, and the overall composition of the system is proposed based on the introduction of the function of the ultrasonic ranging system. Through the comparison of various design schemes of transmitting and receiving circuits, the best design scheme is obtained, and the principle of each design unit of the system is introduced. The chips that make up each system circuit are introduced, and their working principle is described. This paper introduces the software structure of the system and realizes the system function through programming. Finally, through the error analysis of the system, the improvement scheme of the system is given.<br>[Key words] single chip microcomputer ultrasonic distance measurement senso

Absrtact: With the development of social economy, the transportation industry is booming day by day. The number of cars is also rising sharply, and traffic congestion is becoming more and more serious, causing inevitable personal casualties and economic losses. In view of this situation, it is imperative to design an automobile anti-collision early warning system with fast response, high reliability and economy. Ultrasonic distance measurement is the most common distance measurement method. This paper introduces a reversing anti-collision alarm system designed by ultrasonic distance measurement method. The content of this paper is the design of the anti-collision system based on AT89C51 MCU, which mainly uses the characteristics and advantages of ultrasonic, combines the ultrasonic ranging system with AT89C51 MCU, and designs an anti-collision alarm system based on AT89C51 MCU. The system adopts the method of combining software and hardware, and has the characteristics of modularity and versatility. This paper summarizes the development and basic principle of ultrasonic testing, and expounds the principle and characteristics of ultrasonic sensors. Some main parameters of the system are discussed, and on the basis of introducing the functions of the ultrasonic ranging system, the overall structure of the system is put forward. Through the comparison of several design schemes of transmitting and receiving circuits, the best design scheme is obtained, and the principle of each design unit of the system is introduced. The chips that make up each system circuit are introduced, and their working principles are expounded. This paper introduces the software structure of the system, and realizes the system functions by programming. Finally, through the error analysis of the system, the improvement scheme of the system is given. [Keywords:] SCM ultrasonic distance measuring senso