单片机控制汽车倒车雷达,单片机倒车雷达设计

1.单片机的问题

2.超声波测距或单片机的英文资料

首先，你所说的光电传感器是什么信号输出的？开关量？数字量？还是模拟量？

不同的信号输出形势与单片机的连接方式和电路是不一样的。开关量信号的话只需用一电阻与传感器串联即可，单片机IO口连在传感器和电阻之间，原则上电阻上流过1MA电流即可。

模拟量的传感器，就要用到AD转换器了，不同型号的AD，连接方式也是不相同的，有的单片机内部集成AD。在单片机与传感器之间需要进行信号调理。

数字量的传感器，可直接与单片机相连，编程对其进行操作。

希望能够帮助到你。

单片机的问题

我这里有几个循迹和测距的资料与应用，你看看是否有帮助

帮你上传了中转站，你下载看看吧

循迹与测距的资料.rar（包括车用超声波测距倒车雷达设计、光电传感器的基本资料、具有红外遥控功能的寻迹小车控制设计）

://.91files/?NCMYZHLTXG1LX2ISZHCB

等待一下，选择“Click here to Download”

超声波测距或单片机的英文资料

组件不够吧，我只做过倒车雷达，你那种没做过。正常的思路应该时，超声波板上的单片机测出距离后，用通讯的方式控制语音板发声，方法有两种，一是有限界段发声，把0.1-0.5-1.0-1.5等常用的声音录好，控制其发声。

优点是声音连续好听，但是段数太少，只能发几个音

二是如 Gin_HK 说的，语音数据分别存储，如：1，2，3，4，。。。以及“距离是”、“百”、“十”、“米”的语音事先做到模块中。单片机算好时间，控制相应的声音在合适的时间发出。

和一相反，优点是可随意发音，缺点是声音有断续的感觉，。

以上说这么多，对硬件有两点要求，1是语音板支持通讯功能，或编程功能，2是超声测矩板可以自己编程。，如果不行的话，自己做个中转板也是可以的。

A sensor is placed on the rear bumper of the car, which is capable of both emitting and detecting ultrasound. As it pulses, a computer measures the time it takes for the sound it emits to be heard again. Parking sensors operate at a close range and some sensors he a minimum operating range. When the user set distance threshold is passed, the sensor will emit an audible sound alerting the driver that it is getting close to an object. The distance threshold is useful for those who may want to lee more room behind their vehicles, and those who like to squeeze in as tight as possible. Some more expensive models may also he an extra unit inside the car which can also visually alert the driver.

Limitations

The ultrasonic parking sensor is considered the cheapest form of a parking sensor, thus it comes with several problems which other technologies address. The first is that it can miss small objects or objects which lay below the sensor's cone-shaped operating range and sometimes requires multiple sensors to be attached to the bumper to get full coverage on both sides of the car. The sensors can also be mis-triggered on steep slopes when the ground itself is "seen" by the system and wrongly considered to be an obstacle. Camera-based sensors address these problems by simply displaying visually what is behind the car. These, however, are much more expensive.

你可以直接在google里面搜索选择E文即可！