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磁道钉导航的智能公路传感器研制 总被引:4,自引:0,他引:4
章对具有自主知识产权且成本低廉的磁传感器的设计原理,实验条件和信号特性进行了分析,其中信号特性包括测试精度,重复性及稳定性,以该磁传感器为感知元件,基于对于信号特性的认识,根据模糊控制原理设计的车道追踪控制器实现了基于磁道钉导航的智能公路车道追踪控制任务,并且控制精度达到了既定要求,实车试验结果表明,该磁传感器是可用的,作对其信号特性的认识是正确的。 相似文献
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汽车瞬时油耗检测方法与试验分析 总被引:1,自引:0,他引:1
设计了以AT89S8252单片机为核心的汽车瞬时油耗检测系统,该系统利用汽车喷油器脉冲宽度信号和车速传感器信号检测瞬时燃油消耗量,并具有瞬时油耗和百公里油耗实时显示功能.测试结果表明,该检测方法简单,检测数据相对误差小于15%;信号读取无滞后,系统动态特性好,与其它油耗仪相比具有体积小、成本低、操作和维修方便等优点. 相似文献
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三、新款赛欧IMMOⅡ防盗系统(一)IMMOⅡ防盗系统的组成与工作原理2002年以前的赛欧轿车采用DELPHI电控系统,2003年以后生产的新款赛欧轿车改用了BOSCH的M7.9.7电控系统,同时加装了IMMOⅡ防盗系统,它是SIEMENS新一代滚动码防盗系统。I M M OⅡ防盗系统的组成如图16所示,电路如图17所示。IMMOⅡ防盗系统由收发器(Transponder芯片)、集成天线的防盗控制模块(IMMOⅡ)、发动机控制模块(ECM)及相关通讯线路组成。1.收发器收发器是一个安装于点火钥匙手柄内的无源信号发射接收器件,它具有读写和计算功能,它接收天线线圈发射信号… 相似文献
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以某六缸汽车发动机电子控制单元为研究对象,基于Aglient(安捷伦)测控设备和Visual C++6.0、Dreamwaver两款编程软件,结合SCPI指令对电控单元测试系统的硬件和软件部分进行设计。该测试系统通过测控设备仿真汽车发动机上各路传感器信号,电子控制单元接收到传感器信号后进行数据处理并传送到上位机,经上位机的检测处理判断电子控制单元是否返回正确数据,从而达到检测汽车电子控制单元是否符合标准的目的。该测试系统缩短了ECU的检测时间,提高了测试效率,并可对动态数据进行实时监测。 相似文献
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发动机电子控制半实物仿真试验平台的开发 总被引:1,自引:0,他引:1
以Jetta AT1.6轿车为对象。在分析其发动机电子控制系统主要传感器工作原理的基础上。设计了基于ARM微处理器芯片LPC2119的发动机传感器信号采集和信号模拟电路.利用Matlab/Simulink建立了发动机的半实物仿真模型.开发了汽车发动机电控半实物仿真试验平台。在所开发的试验平台上对Jetta AT1.6轿车的发动机ECU进行了性能测试,获得了基本map图和一些修正曲线。为ECU控制算法设计提供了有效的参考。同时,实车的测试结果与半实物仿真模型的计算结果基本一致,从而验证了所建发动机模型的正确性。试验结果表明,所设计的半实物仿真试验平台获得了满意的效果,不仅可以用于教学,而且可用来开发、调试及检测汽车的发动机电子控制系统。 相似文献
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为了能够获取高速公路上的车流信息,基于电磁感应原理,设计了一种基于环型感应线圈传感器的单片机检测系统.通过检测、采集、分析振荡频率,可得到车流量计数、车速及车辆的分类等信息.介绍了工作原理、数据采集及硬件结构组成. 相似文献
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由于发动机节气门上面的位置检测霍尔传感器受到干扰,导致在发动机负载增大时,节气门开度反而变小,发动机工作异常。根据电子节气门的功能原理进行排查分析,霍尔位置传感器输出的电压值异常,与实际设计值相背离,综合考虑开发周期、成本等因素,从优化电子节气门电路芯片的方案,解决电子节气门开度调节异常的问题,并对霍尔传感器周边环境的一般要求进行规范。 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
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C. H. Jang C. S. Kim K. C. Jo M. Sunwoo 《International Journal of Automotive Technology》2017,18(1):147-156
Sensor technologies have been innovated and enhanced rapidly for highly automated vehicle and advanced driver assistance systems (ADAS) in automotive industry; however, in order to adopt sensors into mass production vehicle in near future, various requirements should be satisfied such as cost, durability, and maintainance without any loss of overall performance of the sensors. In this sense, a 3D flash lidar is one of primising range sensors because of no moving parts, compact package, and precise measure for distance by using a laser. In spite of the several advantages, the 3D flash lidar is not commonly used in automotive industry because it is quite expensive for adoption and it is manufactured with only general purpose currently; therefore, the cost reduction and optimal design to satisfy various purposes of ADAS or autonomous driving should be accomplished. In this paper, we propose a novel approach for design factor optimization of the 3D flash lidar based on a geometrical model by using structural similarity between the 3D flash lidar and 2D digital camera. In particular, focal length and area of a receiver (focal plane array and read-out integrated circuit) which directly affect on sensor performance (field of view and maximum detection range) are optimized as the design factors. From the optimization results in simulation, we show that optimal design factors according to various purposes required in ADAS could be easily determined and the sensor performances could be evaluated before manufacturing. It will reduce temporal and economic burdens for design and manufacturing in development process. 相似文献
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车轮速度传感器的构造与维护 总被引:4,自引:0,他引:4
车轮速度传感器的作用是将车轮的转变为电压信号,输送给电子控制系统(ECU),并发出相应的指令。介绍了车轮速度传感器的构造、工作原理、维护与检测。 相似文献
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针对发动机失火诊断中可能出现的误判,引入车身垂直加速度传感器。介绍电容式加速度传感器的工作原理及其相关应用电路。 相似文献