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摘要：现代社会里,汽车越来越普遍,汽车超速所引发的交通事故也时常发生。超速报警器的设计可以用较经济的成本完成了汽车超速自动报警的目标要求。此系统硬件主要包含磁电式车速传感器、主控单片机、显示电路和报警模块等。系统基本流程是测速传感器将外部产生的汽车速度转换为电信号,然后送入内部电路进行处理,,接着再送入控制单片机进行计数,计数结果和内部原本的设定值会进行比较,倘若低于之前的设定值,系统正常工作;假如高于设定值,由此系统判断认为汽车正在路上超速行驶,单片机发出指令,报警电路接着动作,蜂鸣器发出声响和红灯闪烁提示驾驶员减慢车速,这样在很大限度的有效抑制了司机超速驾驶汽车的情况发生。此外,人们能够根据行车情况去预设相对比较安全的行驶速度上限值,最大限度来保障驾驶汽车时的安全。43442
毕业论文关键词：超速报警器；单片机；磁电式车速传感器
Overspeed alarm circuit design based on single chip microcomputer
Abstract: In modern society, the car is becoming more common, the car speeding caused by traffic accidents frequently happen. Overspeed alarm design can use the economic cost of completed car speeding automatic alarm of goals and objectives. The system hardware mainly includes magnetoelectric speed sensor, the master microcontroller, display circuit and the alarm module, etc. System is the basic flow velocity sensors will have a car outside, speed is converted to electrical signals, and then into the internal circuit for processing, and then into the single chip computer control to count, counting and internal originally set value will be compared as a result, if lower than before the set value, system to work normally; If higher than the set value, the system of judgment that car is speeding on the road, SCM issue , alarm circuit, then a buzzer sound, and the red light flashing suggest the driver slowed down, so that to a large extent the effective suppression of the driver of the speeding car. In addition, people can according to the driving conditions to the preset is relatively safe speed limit, maximum limit to guarantee the safety of driving a car.
Key Words: Overspeed alarm; Single chip microcomputer; Magnetoelectric speed sensor
目 录
摘要 1
引言 2
2.系统方案原理及特色 3
2.1超速报警器的设计思路 3
2.2车速报警器的工作原理及方案选择 3
3.系统硬件设计 4
3.1单片机模块 4
3.2时钟电路 5
3.3复位电路 6
3.4测速传感器电路 7
3.5显示电路 8
3.6报警电路 8
4.超速报警器软件设计 9
4.1程序流程图 9
4.2初始化程序 10
4.3报警程序 11
5.仿真结果 11
6.结束语 13
参考文献 13
附录 14
致谢 20
基于单片机的超速报警器的电路设计引言