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The laser detection automotive active anti-collision technology and systems research

Author: YuYang
Tutor: GuGuoHua
School: Nanjing University of Technology and Engineering
Course: Physical Electronics
Keywords: Laser detection Information Extraction Target recognition Anti-collision
CLC: TN247
Type: Master's thesis
Year: 2010
Downloads: 49
Quote: 0
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Abstract


With the rapid development of China 's highway network , the car has become the most important means of transport of people's daily lives . Can not be ignored is that the car in the development of the community , provide a lot of convenience to people's lives while also associated with an increasing number of traffic accidents each year because of the number of traffic casualties and direct economic losses caused by a linear upward trend . The vast majority of car traffic casualties caused due to collision , Therefore , in order to reduce accidents caused casualties happens , you should try to prevent collisions . The subject of high-frequency components of high - precision laser ranging technology research , including comparison with fixed threshold than the dual-channel time delay identification technology , and digital phase-shift transmission delay calculation circuit design techniques to ensure that the laser ranging group pieces to meet the use requirements ; Secondly, the height difference between the complexity of multi-beam detection information extraction and automatic target recognition technology to accurately obtain the relevant object information for the front of the vehicle and effective judgment ; another , including laser beam adaptive level adjustment and accumulator automatic control technology research ; independent brake in more than a number of key technology research based on laser - based detection of multidimensional information discriminating automotive active collision avoidance development of the integration of the whole system , the system includes a central FPGA DSP processor as well as the implementing agency , the central processor the lidar system extraction process on the downhill , turn the risk of discrimination , based on the relative velocity indicators and related instruction is sent to the actuator by the executing agency to complete the alarm deceleration , braking , and other actions to achieve the purpose of safe driving . At present, the development of the system has been tested by venue , function and related indicators fully meet the design requirements , stable and reliable work .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Optical detection techniques
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