基于51单片机超声波测距仪设计毕业论文.docVIP

基于51单片机的超声波测距仪设计 摘 要 利用超声波进行测距有许多优点传感器的较低也较为简单 本次毕业设计的是STC89C51单片机的基础上设计的，在分析和了解了超声波的一些优点和特性后，又查看了超声波测距的基本原理最后超声波组成。超声波测距仪主要包括复位、与超声波模块组成的超声波发射模块超声波接收模块LED数码显示模块报警模块软件、发射与接距离程序、显示程序按键控制程序报警程序使系统具有模块化的特点容易控制可靠地性能具有较高的测量最重要的是能对距离进行实时测量。 测量 Design of Ultrasonic Distance Meter Based on 51 MCM Using ultrasonic ranging has many advantages for example, from the effects of light intensity, color and electromagnetic field and other external factors and price lower ultrasonic sensors, the structure is simple, ultrasonic sounds velocity, convenient transceiver and calculation. In the car reverse radar, mobile robot obstacle avoidance, especially measuring distance and many other aspects have been very common application. The graduation design of ultrasonic range finder based on STC89C51 MCU design, analysis and understanding of the some advantages and characteristics of ultrasonic and looked at the use of the basic principle of ultrasonic distance measurement. Finally, the composition of the 51 single-chip microcomputer system and ultrasonic sensor is decided.. The design of ultrasonic rangefinder hardware part consists of the power and reset module, SCM and ultrasonic module consists of ultrasonic emission module, ultrasonic receiving module, LED digital display expansion module and alarm module. Software part mainly includes MCU program, according to the ultrasonic transmitting and receiving computing program distance, the distance of LED display program, key control procedures and buzzer alarm procedures, this arrangement enables the system to have the characteristics of modular. The system is easy to control and has the reliable performance, and has the higher accuracy, and the most important is the real-time measurement of the distance. KEY WORDS: Single chip microcomputer，Range finder，UltrasonicReal-time measurement 目 录 摘 要 I 目 录 III 第1章 绪 论 1 1.1 研究背景 1 1.2 研究的主要意义 1 第2章 系统电路设计 3 2.1 系统结构设计 3 2.2 电路总体设计方案 3 2.2.1 发射与接收电路设计方案 3 2.2.2 显示电路设计方案 5 2.2.3 报警电路设计方案 6 2.2.4 系