December 05, 2023

Design diagram of license plate recognition and underbody safety system in factory area

ForewordHello everyone, I'm Mr. Lin, vehicle control system design plan. The template materials, including system architecture, are convenient for beginners to learn. TextDriving vehicles

1. System overview

Vehicle management mainly implements information logging, authorization management, and monitoring and capturing vehicles entering and leaving warehouse area. The system uses intelligent analysis and forward-looking technologies such as license plate recognition and vehicle underbody detection, and integrates vehicle capture. equipment and barrier equipment for vehicles through its own software platform, as well as innovative products such as under-vehicle visualization system, provide more advanced and intelligent security to manage and control vehicles entering and exiting warehouse.

2. System architecture Design diagram of license plate recognition and underbody safety system in factory area

Figure 1. Schematic diagram of vehicle control system architecture

2. Arming scheme

The fleet entry and exit management system uses stoppers for electric vehicles, license plate recognition cameras, triggers and anti-smash radars (coils) and other equipment to realize automatic release and prompts for domestic legal vehicles, accurately record and identify license. license plates and make sure vehicles can enter and exit safely. Data can be verified and access can be controlled.

The under-vehicle safety detection system is automatically triggered when a vehicle is approaching, and auxiliary light module and speed matching module help line scan camera complete its acquisition. The collected under vehicle image can be linked to vehicle entry and exit management system by controlling interactive equipment so that under vehicle image can be stored along with license plate and vehicle information collected by entry and exit equipment.

Design diagram of license plate recognition and underbody safety system in factory area

Figure 2. Under-vehicle Security Detection System Deployment Schematic

The stability of coil version is higher than that of photovoltaic version. The coil will not cause problems with photoelectric false triggering (rain, pedestrians, dust, etc.), and photoelectric trigger version is only suitable for semi-open (top configuration) scenes; installation distance of coil version (shown in L2) is longer than photovoltaic version. Generally speaking, estimated frame distance of coil version is about 3 meters, and photovoltaic version is about 1.2 meters; in case of a certain total distance (L2 + L3 in figure), due to large installation distance of coil, its effective determination of vehicle length (L3 shown) is shorter than that of optical version. During actual assembly, it must be considered that one-pass bike test should avoid following vehicle and staying over equipment for a long time to avoid inaccurate test results; This picture is for reference only, mounting position, and actual situation of project shall prevail.

Design diagram of license plate recognition and underbody safety system in factory area

Figure 3. Rendering of an image of car underbody security check system

4. System functions

1) Driving a vehicle

Stationary vehicles: support license plate recognition or long-distance map recognition comparison, you can enter place without any action. For scenes with high control requirements, it can be set that vehicle card must be consistent, that is, only when two authentication methods pass at same time can they enter venue.

Vehicle placement and control: system automatically generates an alarm in front and center of a suspicious vehicle, and at same time, manual intervention is required to eliminate this.

2) Software control of electric vehicle stop

The client or central control platform can remotely control opening and closing of electric plug, which is convenient for operator control and special needs.

3) Image/video preview

Passing vehicle images and information are displayed in real time, video previews are performed in real time, incoming and outgoing vehicles are automatically matched, and image previews are interrogated by lane.

4) Automatic license plate recognition

The system can automatically recognize vehicle's license plate, including license plate identification and license plate color.

By recording real-time images of passing vehicles, it can also meet "GA36-92" (92-style license plate), "GA36-2007" (new license plate standard), "GA36.1". -2001" (License plate style 02) standard civilian license plate, police license plate, military license plate and armed police license plate with automatic recognition capabilities, including 2002 style license plates.

The system can recognize five license plate colors: black, white, blue, yellow, and green.

5) Record vehicle information

Vehicle information includes two types of traffic information and vehicle image information.

When vehicle passes through entrance and exit, system can accurately record vehicle's movement information such as time, location, direction, etc. The license plate recognition system can accurately capture images, including front of vehicle and license plate and transmit image and vehicle traffic information to input control terminal, and can also choose to overlay vehicle traffic information (such as time, location, etc.) on image.

The capture camera used on system, andhas functions of intelligent image processing, strong light suppression and auxiliary light control, etc. (strong light, etc.) and night photo.

6) Scanning bottom of car in real time

The system automatically scans vehicle chassis at a speed of 1 to 30 km/h, a viewing angle of more than 180 degrees, and a resolution of generated chassis image of more than 20 million pixels. For extra long vehicles, you can drag and drop through image preview window to view entire vehicle chassis. The information collected at bottom of large and small vehicles can be seen at a glance, and full high-resolution image of vehicle's chassis is displayed in real time. , allowing operators to quickly and accurately distinguish between various suspicious objects of different colors attached to vehicle's chassis.