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倒车雷达系统作为汽车安全驾驶辅助工具之一,可以极大地减轻驾驶者的体力、脑力劳动强度,降低倒车难度,避免驾驶员因方向感不强、判断和操作失误而引起的事故,在现代汽车中被普遍采用。本文从倒车雷达系统的功能、性能、质量及价格等方面入手,进行比较选购,并简要介绍倒车雷达系统的安装方法,最后总结了汽车倒车雷达系统的使用与保养措施。 相似文献
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经过数年的发展.倒车雷达已经成为了大多数私家车车主必定会选用安装的设备。而很多汽车生产厂商也看准了大众的需求.把倒车雷达作为了标准配置。但是你可知道.目前市场上所能看到和买到的倒车雷达已经发展了大致四代.而且这五代产品并存于市场上.好坏不一.购买的时候陷阱颇多。所以介绍有关倒车雷达的知识.就显得比较重要了。[编者按] 相似文献
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倒车雷达由超声波传感器(探头)、控制器(主机)和显示器等部分组成。现在市场上的倒车雷达大多采用超声波测距原理,驾驶者在倒车时(挡位推到R挡),倒车雷达启动,由装置于车尾的探头向车后方发送超声波,遇到障碍物,即产生回波信号,传感器接收到回波信号后,经控制器进行数据处理,判断出车体与障碍物的距离,并通过呜蜂或数字显示提示驾驶者,从而使驾驶者倒车时心中有数。 相似文献
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概述 预警雷达后视辅助系统(BUA)能帮助驾驶员在倒车时,探测到盲点区域内的宠物、儿童、车辆和其他物体,同时它也能在紧急停车的情况下辅助倒车.车辆在倒车时,BUA系统会自动启动.当车辆处于倒车状态时,全雷达后视辅助系统借助安装在后保险杠面板内的24GHz双声波雷达传感器自动监测车后16.4英尺范围(相当于5米范围).通过声音警告或视觉警告,随着车辆与障碍物不断靠近,警告会变得更加频繁. 相似文献
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As driver assistant systems (DAS) and active safety vehicles (ASV) with various functions become popular, it is not uncommon
for multiple systems to be installed on a vehicle. If each function uses its own sensors and processing unit, it will make
installation difficult and raise the cost of the vehicle. As a countermeasure, research integrating multiple functions into
a single system has been pursued and is expected to make installation easier, decrease power consumption, and reduce vehicle
pricing. This paper proposes a novel side/rear safety system using only one scanning laser radar, which is installed in the
rear corner of the driver’s side. Our proposed system, ISRSS (integrated side/rear safety system), integrates and implements
four system functions: BSD (blind spot detection), RCWS (rear collision warning system), semi-automatic perpendicular parking,
and semi-automatic parallel parking. BSD and RCWS, which operate while the vehicle is running, share a common signal processing
result. The target position designation for perpendicular parking and parallel parking situations is based on the same signal
processing. Furthermore, as system functions during running and those during automatic parking operate in exclusive situations,
they can share common sensors and processing units efficiently. BSD and RCWS system functions were proved with 13025 and 2319
frames, respectively. The target position designation for perpendicular and parallel parking situations was evaluated with
112 and 52 situations and shows a success rate of 98.2% and 92.3%, respectively. 相似文献
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Collision accidents often occur during parking or reversing cars. In allusion to this point, this paper conducts a review of literatures on automatic parking. To begin with, a brief introduction of automatic parking including its background and significance is given. Then its commercial application, research status and latest progress are summarized which include visual perception, ultrasonic sensors and radar technology, path planning, control algorithms based on fuzzy theory, neural network, image processing and recognition technology, and digital signal processing technology, etc. On further analysis, some reasonable conclusions are drawn and the future work is suggested. 相似文献
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毫米波雷达作为车辆主动安全技术的核心传感器之一,在预警系统中,雷达的安装误差会导致其坐标系与上层应用不一致,影响系统性能甚至安全性。雷达自动校准功能借助整车运行环境中的静止目标,通过解算静止目标物相对雷达运行速度与整车实际运行速度的矢量关系,并采取批量自学习的方法以确定雷达初始安装偏差角度值,进而使用软件补偿的方式对偏差值进行修正,使雷达传感器与整车坐标系保持一致。 相似文献
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随着智能停车设施应用越来越多,智能停车服务机器人停车场(库)已成为未来发展智能停车场(库)、无人值守停车场(库)技术的主要方向之一。而当前尚无针对智能停车服务机器人停车场(库)的相关设计规范,实践中急需相关规范指导。结合编制完成的《智能停车服务机器人场(库)工程设计规程》(简称《规程》),以及智能停车服务机器人场(库)相关工程建设实践经验,提出了智能停车服务机器人场(库)及其主要组成部分的概念和类型。在此基础上,总结建立了包含4个一级建设指标,13个二级建设指标,50个三级建设指标的面向智能停车服务机器人停车场(库)工程设计关键技术指标体系,详细介绍了每个建设指标的基本概念和《规程》基本规定。本文研究内容有助于相关工程技术人员准确理解和应用本《规程》,有助于指导智能停车场(库)的设计和建设,有助于推进停车场(库)的智能化建设和发展。 相似文献
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随着城市经济社会不断发展,小城市小汽车保有量持续增加,交通需求呈现快速增长趋势,而城市停车设施供应总量增加速度远低于交通需求增长速度,导致停车难问题在小城市范围内也日益凸显。本研究对扬中市城市“停车难、停车乱”进行问题研判分析,结合城市发展目标与城市停车发展趋势与需求,提出“调需、精供、优效”的城市停车发展策略,并提出相应措施,缓解近期城市停车难题,促进远期停车系统健康发展,为小城市停车发展提供一定参考。 相似文献
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本文通过介绍宁波市鄞州区的停车现状,分析了其停车发展的"瓶颈"和原因,结合智慧停车管理模式和"万达片区"智慧停车试点项目,提出了该区域实施智慧停车管理的对策和建议。 相似文献
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停车信息是智能停车诱导系统得以成功实施的关键与基础, 被广泛认为能够有效解决当前停车难问题。鉴于停车信息在解决停车问题中的重要性, 研究了基于粒子群和LSTM模型的变区间短时停车需求预测方法。为充分发挥数据在提高模型预测精度的作用, 提出了以马尔可夫生灭过程为基础概率转移模型, 将停车到达率、离开率量化车随时间变化的停车需求, 通过标定实际的停车到达率和离开率, 确定预测模型的动态预测间隔与时段; 采用LSTM网络作为基础预测模型, 并利用粒子群优化算法优化网络参数。以吉林大学南岭校区停车场为研究对象, 按工作日与非工作日分别对停车数据进行预测并与其他预测模型进行对比分析。结果表明: 提出的停车需求预测模型在工作日的预测平均绝对误差为2.53辆, 均方误差为11.89辆; 非工作日的预测平均绝对误差为2.32辆, 均方误差为10.89辆。 相似文献
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S. H. Jeong C. G. Choi J. N. Oh P. J. Yoon B. S. Kim M. Kim K. H. Lee 《International Journal of Automotive Technology》2010,11(3):409-416
This paper presents a low cost design and implementation of a parallel parking assist system (PPAS) based on ultrasonic sensors.
Generally, a PPAS requires several types of sensors, such as an ultrasonic sensor, camera sensor, radar sensor and laser sensor
for parking space detection. However, our proposed PPAS only requires two ultrasonic sensors on the front and lateral sides
for parking space detection. Moreover, a steering angle sensor and wheel speed sensor installed in the vehicle are used to
obtain vehicle position information for localization in ultrasonic range data. The hardware architecture of the PPAS based
on an electronic control unit (ECU) module, sensor modules and a human machine interface (HMI) module was proposed. Moreover,
the software architecture of the PPAS is based on system initialization, scheduling, recognition and a control algorithm.
In particular, a novel sensor algorithm was proposed to minimize the vehicle corner error of the ultrasonic sensor. A prototype
of the PPAS based on the proposed architecture was constructed. The experimental results demonstrate that the implemented
prototype is robust and successfully performs parking space detection and automatic steering control. Finally, the low cost
design and implementation of the PPAS was possible due to the cheap ultrasonic sensors, simple hardware design and low computational
complexity of the proposed algorithm. 相似文献