基于激光测距的高速公路汽车防碰撞预警装置的研究

发布时间：2018-05-19 07:08

本文选题：激光测距 + 行车安全车距　；参考：《长安大学》2014年硕士论文

【摘要】：汽车防撞预警装置能够在驾驶员行车安全距离控制不当时通过语音设备发出警示信号，使驾驶员能够立即采取积极有效措施避免车辆处于危险行驶状况，最终达到降低高速公路交通事故的目的。目前，全球一些知名汽车企业已经将汽车防撞预警技术应用于汽车主动安全产品中，我国也在此领域中积极探索，努力将汽车防撞预警技术向产品化推进。本文在选取合适的测距传感器以及建立理论行车安全车距模型上做了大量工作，通过对比和本装置的开发要求，选取激光传感器作为高速公路上的测距装置，，以DSP2812作为核心处理器，并且设计了相应的车速采集模块、显示模块和语音报警模块，开发出了硬件电路板，并根据相关算法编写了对应程序。最后在高速公路上进行了大量的实车试验，检测本装置硬件工作的稳定性和算法可靠性，不断对算法中的参数进行优化，使其能更加接近汽车运行的真实状况，达到有效避免高速公路上交通事故发生的目的。试验结果表明此装置在高速公路上能够有效起到预警作用，使驾驶员快速采取适当措施避免交通事故的发生，这为今后开发相关成熟产品打下了坚实的基础。
[Abstract]:The vehicle anti-collision warning device can send out warning signals through voice equipment when driving safety distance is not controlled, so that the driver can immediately take active and effective measures to avoid the vehicle from being in a dangerous driving condition. Finally achieve the goal of reducing highway traffic accidents. At present, some well-known automobile enterprises in the world have applied anti-collision warning technology to automotive active safety products, and our country has also actively explored in this field, and made great efforts to promote the anti-collision warning technology to production. In this paper, a great deal of work has been done on selecting the appropriate ranging sensor and establishing the theoretical vehicle distance model for driving safety. By comparing with the development requirements of this device, the laser sensor is selected as the ranging device on the highway. With DSP2812 as the core processor, the corresponding speed acquisition module, display module and voice alarm module are designed, the hardware circuit board is developed, and the corresponding program is compiled according to the relevant algorithm. Finally, a large number of real vehicle tests are carried out on the freeway to detect the stability of the hardware and the reliability of the algorithm, and to optimize the parameters of the algorithm continuously, so that it can be more close to the real condition of the vehicle operation. To achieve the purpose of effectively avoiding traffic accidents on the highway. The test results show that the device can play an effective role in early warning on expressway, and make the driver take appropriate measures to avoid traffic accidents quickly, which lays a solid foundation for the development of related mature products in the future.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U495;U492.8

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