【作者】 侯帅；

【导师】 赵一丁；

【作者基本信息】 东北大学 ， 控制理论与控制工程， 2009， 硕士

【摘要】 随着经济的发展,煤炭的需求也在不断的提高,煤炭运输中运煤车辆的运输承担着主要作用,尤其是运煤码头,火电厂,某些大企业用煤量极大,运煤列车来往更是频繁。汽车运输调配煤炭一直是煤炭运销工作的重点。到目前为止,一些煤场中运煤车辆监控、称重、记录等工作,主要采用人工的方法管理。这种依赖人工方式的车辆管理模式,存在着许多弊端和安全隐患。煤场车辆监控与识别系统主要目的是在保证车辆通行的前提下,最大限度的减少煤炭的流失。在系统中加入车辆、司机的自动识别及车辆重量的自动称重。不仅可以减轻收费员的劳动强度,更能解决现有收费系统中存在的漏洞。本论文详细讨论了一种可应用于煤场车辆监控与识别的方法。本文的贡献有：第一部分设计了系统的硬件,对车辆到达感应部分、重量检测电路、射频卡识别部分、监视与拍摄部分硬件进行选型。对硬件进行调试,使其能与上位机进行良好的通信。第二部分为软件设计,基于Delphi 7.0软件平台进行开发,采用Access数据库完成对监控系统数据及多媒体信息的保存、查询、删除等功能。设计了软件工作界面,软件能够完成对煤场现场监控、车辆查询、图像识别、车辆称重、车辆身份识别等功能。该系统能实现良好的控制效果,提高煤场车辆监控的效率。第三部分采用了一种结合车牌几何特征及颜色特征的车牌定位算法,首先对图像噪声进行处理,然后对车牌区域集合形状以及颜色、象素等分析。分析得到可能连通体,并对连通体进行组链。从多个组链中选出最大可能的链,从而定位出车牌区域。对于煤场大型车辆具有很好的针对性,取得很好的车牌定位效果。通过实际硬件实验和对采集来的图片的实验,实验证明系统能够识别车辆的身份,重量等信息,实验结果表明,本文所提出针对煤场车辆监控与识别系统方法的有效和实用性。更多还原

【Abstract】 With development of economic, the demand for coal has been increased. Vehicles play an important role in coal carrying. In particular, coal terminals, power plants, some big companies, coal vehicle comes and back more frequently.As far as now, vehicle transport is the focus of coal’s transportation and sale.Many vehicle’s weighting,recording and monitoring in coal field is mainly managed by artificial methods.There are so many drawbacks and security risk in artifical management model.Coal market vehicle monitoring and identification’aim is to ensure the premise of vehicles and to minimize the loss of coal.System can identify the driver and vehicle’identity. The system can measure the height of the vehicle automaticly. System can not only to reduce the intensity of charge, but also solve the loopholes in the system.This paper discussed a method in detail.This method can be applied to coal market vehicle monitoring and identification system. The main contribution of this paper is:In the first part, design the system’hardware.Selectding the hardware to vehicle arrival part, weighting detection circuit, radio frequency identification cards, monitoring and photoing part. Let them can communicate to computer very well.The second part is the software’s design. The design is based on the Delphi 7.0 platform. Access dtabase is use to save, inquery and delete the information of vehicle monitoring system. Dsign the interface of the software, the software can complete the function of vehicle monitoring, vehicle information, image recognition, wehicle weighting and vehicle identification. The system can reach good control effect and enhance good efficiency.In the third part disscused the license plate location algorithm in detail. This algorithm is based on the character of license plate’s shape and color character.Fistly, we fiter out the noise of vehicle plate license image. Then give analysis to the color and pixels region. After analysis, get the connecttiong component area. Give the Analysis to the connecting componet area and group special chains. Accroding to analysis the chain characteristics, select the most probably chains in several chains. At last positionting the regiong of licese plate. This method has an good effect to the license plate’s location.Though the experiment of actual and the collection picture.Experiment show the system can identify the identity of vehicles, weight and other information. The result of experiment show the coal maket vehicle monitoring and identification is effective and practical.更多还原