红外动体速度判定系统的研究.doc

红外动体速度判定系统的研究

摘  要：当前为了搞好交通管制，消除交通安全隐患，通常采用雷达测速法(多普勒效应法)对违章(超快或超慢)车辆的速度进行识别、取证。但近期市场上出现了一种俗称“电子狗”的无线电接收装置，若汽车配有此装置后，在接近雷达测速区时，就能提前捕捉到雷达测速的信息而报警，提醒司机“前方有测速”，使其很快改为遵章行驶，一旦越过雷达测速区，车辆就又违章行驶了，终使违章车辆得不到应有的处罚，事故隐患犹存。针对这种情况，我们研制了以红外光传感器为核心的新的测速系统。该系统测速时不会被“电子狗”所发现，不仅能识别汽车速度V的大小，还能测出其速度超过上限速度（Vmax）的量值+△V或低于下限速度（Vmin）的量值-△V等信息，据该信息驱动取证系统（打印、照相）工作，能有效提高交通管制的力度，为消除交通隐患，保证人民生命财产的安全起到积极的作用。

关键词：红外光；速度计算；速度判定系统

Research of Infrared Motion Velocity Determination System
Abstract: To improve the current traffic control and eliminate hidden dangers, we usually use radar gun (Doppler effect) to determine whether the vehicle violate the regulations (or ultra-fast super-slow) and finish the speed identification, as collection of evidence. But recently appeared on the market a "dog" radio receiving equipment, after the vehicles are equipped with the device, in areas close to the radar gun, they will be able to detect early radar guns and alarm information, to remind drivers "there is a gun”, then it will soon be compliance, once crossed the radar gun, they will also violate vehicle traffic regulations, to the end the illegal vehicles are not punished, the problem remained. In light of this situation, we have developed an infrared sensor at the core of the new gun system. The gun system will not be "electronic dog" found that not only could identify the vehicle speed V size, but could detect with a speed faster than the speed limit(Vmax) of the money(+V) or lower threshold velocity(Vmin) volume value(-V) and other information, according to the evidence-driven information systems(print and photography), it will effectively improve traffic control, and play a positive role in eliminating hidden dangers and ensuring the people's lives and property safety.
Key words: infrared light; velocity measurement; speed determination system

目    录
摘要…………………………………………………………………………………………1
1 引言………………………………………………………………………………………4
2 红外光测速系统的结构…………………………………………………………………4
3 VHDL程序描述……………………………………………………………………………5
3.1 速度判定器………………………………………………………………………………6
3.2 与门………………………………………………………………………………………7
3.3 非门………………………………………………………………………………………7
3.4 或门………………………………………………………………………………………8
4 红外光测速系统的工作原理……………………………………………………………8
4.1 无车辆经过光控测速区的情况…………………………………………………………8
4.2 有车辆经过光控测速区的情况…………………………………………………………8
4.3 若车辆违章通过光控测速区时的情况…………………………………………………9
5 结论………………………………………………………………………………………9
参考文献……………………………………………………………………………………10