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  • 车牌识别技术是如何实现的?主要有哪几种应用场景?
  • 本站编辑:杭州国保科技有限公司发布日期:2019-09-05 17:20 浏览次数:

在城市车辆快速增长的过程中,如何实现对车辆的有效管理成为考验交通部门的重要因素。车牌识别技术就成为车辆身份识别的主要手段。那么,车牌识别技术是如何实现的?车牌识别主要有哪几种应用场景?

车牌识别实现方式

 外设触发工作方式是指采用线圈、红外或其他检测器检测车辆通过信号,车牌识别系统接受到车辆触发信号后,采集车辆图像,自动识别车牌,以及进行后续处理。

 视频触发方式是指车牌识别系统采用动态运动目标序列图像分析处理技术,实时检测车道上车辆移动状况,发现车辆通过时捕捉车辆图像,识别车牌照,并进行后续处理。视频触发方式不需借助线圈、红外或其他硬件车辆检测器。

监测报警

 对于纳入“黑名单”的车辆,例如:被通缉或挂失的车辆、欠交费车辆、未年检车辆、肇事逃逸及违章车辆等,只需将其车牌号码输入到应用系统中,车牌识别设备安装于指定的路口、卡口或由执法人员随时携带按需要放置,系统将识读所有通过车辆的牌照号码并与系统中的“黑名单”比对,一旦发现指定车辆立刻发出报警信息。

超速违章罚款

在路上设置测速监测点,抓拍超速的车辆并识别车牌号码,将违章车辆的牌照号码及图片发往各出口;在各出口设置处罚点,用车牌识别设备识别通过车辆并将号码与已经收到的超速车辆的号码比对,一旦号码相同即启动警示设备通知执法人员处理。

车辆出入管理

 将车牌识别设备安装于出入口,记录车辆的牌照号码、出入时间,并与自动门、栏杆机的控制设备结合,实现车辆的自动管理。应用于停车场可以实现自动计时收费,也可以自动计算可用车位数量并给出提示,实现停车收费自动管理节省人力、提高效率。应用于智能小区可以自动判别驶入车辆是否属于本小区,对非内部车辆实现自动计时收费。在一些单位这种应用还可以同车辆调度系统相结合,自动地、客观地记录本单位车辆的出车情况,车牌识别管理系统采用了车牌识别技术,达到不停车、免取卡,有效提高车辆出入通行效率。

高速公路收费管理

 在高速路的各个出入口安装车牌识别设备,车辆驶入时识别车辆牌照将入口资料存入收费系统,车辆到达出口时再次识别其牌照并根据牌照信息调用入口资料,结合出入口资料实现收费管理。这种应用可以实现自动计费并可防止作弊,避免了应收款的流失。

 高速公路已开始实施联网收费,随着联网范围的扩大,不同车型的收费差额也越来越高,司机利用现有收费系统的漏洞通过中途换卡进行逃费的问题将越来越突出,利用车牌识别技术是解决此类问题的根本方法。

计算车辆旅行时间s

 在交通管理系统中可以将车辆在某条道路的平均旅行时间作为判断该道路拥堵状况的一个参数。安装车牌识别设备于道路的起止点,识读所有通过车辆并将牌照号码传回交通指挥中心,指挥中心的管理系统根据这些结果就可计算出车辆平均旅行时间。

此外,在城市人口快速增长的今日,人们车辆保有量的迅速上增,加上政府法规的实施,电子收费系统将有望带动车牌识别市场的增长。据调研显示,在亚太地区,车牌识别系统将以18.06%(相比其他地区最高)的年复增长率增长,应对目前交通拥堵、警察执法、收费和停车场的快速增长的需求。

杭州国保科技有限公司是国内优秀的智能停车解决方案提供商,致力于车牌识别、车型识别、车辆特征识别、车位检测等核心软件的研发。国保科技根据停车场车牌识别的特定场景需求,研发并推出高性能的车牌识别一体机(车牌识别率高达99.7%)。目前,公司基于国保车牌识别一体机开发的智能停车场收费系统,能满足不同停车场的收费需求

In the process of rapid growth of urban vehicles, how to achieve effective management of vehicles has become an important factor to test the traffic department. License plate recognition technology has become the main means of vehicle identification. So, how to realize license plate recognition technology? What are the main application scenarios of license plate recognition?

License plate recognition implementation

The working mode of peripheral trigger refers to using coil, infrared or other detectors to detect the passing signal of the vehicle. After the vehicle trigger signal is received by the license plate recognition system, the vehicle image is collected, the license plate is automatically recognized and follow-up processing is carried out.

Video trigger mode refers to the license plate recognition system using dynamic moving target sequence image analysis and processing technology, real-time detection of vehicle movement on the road, the detection of vehicle image when the vehicle passes, identification of vehicle license plate, and subsequent processing. Video triggers do not require coils, infrared or other hardware vehicle detectors.

Monitoring and alarm

For vehicles into the "black list", for example: wanted or report the loss of vehicles, owe fee, not yearly check of vehicle, hit-and-run and peccancy vehicles etc., need to apply the license plate number input to the system, the license plate recognition device installed in the specified intersection, bayonet or carry placed, as required by law enforcement personnel system will read all through the vehicle's license plate number and with the "blacklist" than in the system, once found designated vehicle immediately send out alarm information.

Speeding fines

Speed measurement monitoring points are set up on the road to capture speeding vehicles and identify license plate Numbers, and the license plate Numbers and pictures of illegal vehicles are sent to each exit; Set penalty points at each exit, identify passing vehicles with license plate recognition equipment and compare the number with the number of speeding vehicles already received. Once the number is the same, the warning equipment will be activated to inform law enforcement personnel to deal with it.

Vehicle access management

The license plate recognition equipment is installed at the entrance and exit to record the license plate number and access time of the vehicle, and combined with the automatic door and railing machine control equipment to achieve automatic management of the vehicle. When applied to parking lots, automatic timing and charging can be realized, and the number of available parking Spaces can be automatically calculated and given hints, so as to realize automatic management of parking fees, save manpower and improve efficiency. Applied to intelligent community, it can automatically determine whether the incoming vehicle belongs to this community, and realize automatic timing and charging for non-internal vehicles. In some units this application can also be combined with the vehicle dispatching system, automatically and objectively record the vehicle out of the unit, license plate recognition management system USES license plate recognition technology, achieve no parking, no card, effectively improve the efficiency of vehicle access.

Highway toll management

License plate recognition equipment is installed at each entrance and exit of the expressway. When the vehicle enters, it recognizes the vehicle license plate and stores the entry data into the charging system. When the vehicle arrives at the exit, it recognizes the license plate again and invokes the entry data according to the license plate information. This application can achieve automatic billing and can prevent cheating, avoid the loss of receivables.

Expressway has begun to implement the network toll, with the expansion of the network scope, the difference between different models of the toll is also increasingly high, the problem of drivers using the existing toll system loopholes through the midway card to escape the problem will be more and more prominent, the use of license plate recognition technology is the fundamental method to solve such problems.

Calculate the vehicle travel time s

In the traffic management system, the average travel time of vehicles in a certain road can be taken as a parameter to judge the road congestion. License plate recognition equipment is installed at the starting and ending points of the road, which can read all passing vehicles and send the license plate number back to the traffic command center. Based on these results, the management system of the command center can calculate the average travel time of vehicles.

In addition, with the rapid growth of urban population, the rapid increase of vehicle ownership and the implementation of government regulations, the electronic charging system is expected to drive the growth of license plate recognition market. According to the survey, license plate recognition systems in the asia-pacific region will grow at an annual rate of 18.06 percent, the highest among other regions, to cope with the rapid growth in traffic congestion, police enforcement, toll collection and parking.

Hangzhou guobo technology co., ltd. is an excellent domestic intelligent parking solution provider, committed to license plate recognition, model recognition, vehicle feature recognition, parking detection and other core software research and development. According to the specific requirements of car park license plate recognition, guobo technology has developed and launched a high-performance all-in-one license plate recognition machine (license plate recognition rate is up to 99.7%). At present, the intelligent parking fee collection system developed by the company based on the all-in-one license plate recognition machine of guobo can meet the charging requirements of different parking lots.