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1. Background description
At present, dynamic violations of vehicles such as driving in irregular lanes, driving on hard shoulders, and changing lanes illegally on expressways are prominent. However, high-speed traffic police find that such violations are often based on police megaphones and persuasion when they are on duty. The method of fixing illegal evidence has reduced the deterrent effect on illegal drivers. On the other hand, with the continuous deepening of the law of administration, strict, fair and civilized law enforcement, the general public’s awareness of rights protection continues to increase, and the traffic police are in the process of handling It is difficult to preserve the scene of the party’s education, correction, and investigation of illegal acts, which easily leads to the occurrence of complaints, and it is difficult to protect the legitimate rights and interests of the police and the parties.
How to provide a kind of effective evidence collection equipment to solve the problems of road traffic violations, such as road traffic violations, difficult to obtain evidence, and to better maintain road traffic order. The traffic police urgently needs to be resolved. Through the theoretical exploration and practice of the high-speed traffic police corps in the past few years, the construction of a vehicle-mounted dynamic forensic video system is the main method to solve the difficulty of obtaining evidence for dynamic illegal behaviors on the road. It also reduces the cost of administrative law enforcement and an effective way to improve the effectiveness of law enforcement.
Figure 1 Vehicles occupying the road illegally and speeding
2. To achieve the goal
(1) Realize the intelligent collection and evidence collection functions of various illegal acts on the road surface, and form evidence records.
(2) Realize the intelligent detection function of mobile deployment control vehicles, conduct intelligent detection and comparison of passing vehicles, and realize the automatic alarm function.
(3) Realize the integration of the mobile police system and share a mobile terminal (car laptop) to create a mobile law enforcement vehicle on the highway.
Figure 2 Dynamic evidence collection of illegal vehicles
3. System functional requirements
(1) Automatic identification of vehicle license plates for illegal vehicles on the road, and form data records by capturing and taking pictures of illegal vehicles to realize the functions of mobile dynamic illegal activity collection and evidence collection.
1. The patrol vehicle is equipped with this system facility to record the illegal activities on the road outside the vehicle for photo and video recording, including recording the road conditions, markings and markings and vehicle traffic, so as to realize the collection and evidence collection of dynamic illegal activities.
2. Automatically complete license plate recognition, license plate color, and illegal time judgment on the collected photos, images and other information, and form a preliminary record. After the police reconfirm and edit the illegal behavior in the car, the system automatically forms valid evidence.
3. Use GPS module and other means to locate the location of the violation and determine the driving direction of the illegal vehicle. After translation into Chinese geographic description, the information is superimposed to realize the automatic superimposition of the equipment number, police on duty, illegal code, and illegal on the photos and video evidence materials. Information elements such as time, illegal location, driving direction, etc.;
4. The system associates relevant text information, photos, and image information one by one, and forms effective illegal data records according to the requirements of the general team’s off-site illegal database format.
(2) Realize the intelligent detection function of mobile deployment control vehicles, conduct intelligent detection and comparison of passing vehicles, and realize the automatic alarm function.
1. It can take pictures of passing vehicles and realize the automatic recognition of the vehicle number plate at the same time. It can realize the automatic alarm function by intelligently comparing with the black garage of the black garage stored locally in the car, and it should be personalized according to different control needs. Alarm prompt.
2. The matching of vehicle license plates can be set to exact matching mode or manually set a number of alphanumeric fuzzy matching modes to achieve continuous character matching.
3. It is required to realize the real-time operation function on the car, that is, the function of revising and proofreading the recognized vehicle number plate, realizing the intelligent correction function of vehicle recognition and the function of revising and querying black cars;
4. Black car alarm and passing information need to form data records associated with related information and photos, and can provide users with custom conditions for query.
(3) It has data update and query functions.
1. The police database, black car database and other information can be downloaded and updated through the public security network online or offline manually, and it supports the regular update function in online mode. The black car database should support users to freely set the black car information (types of card decking, stealing, multiple violations and unhandled, etc.);
2. Effective illegal information, black car alarm information, passing information, illegal processing information, etc. generated by the system operation can be uploaded online through the public security network or manually in offline mode;
3. Support users to freely specify query conditions (time, location, license plate range, police on duty, etc.) to query the corresponding record information in the local database;
Figure 3. Block diagram of dynamic forensics system
4. Introduction to the main equipment in the system
Hardware Specifications of JNB-1404 Car Reinforced Notebook:
CPU: performance index ≥ intel L7500
Memory: ≥ 2.5G
Bluetooth function, compatible with Bluetooth? v1.2
Battery life ≥ 4 hours
Host interface:
≥ 1 VGA interface
≥ 1 RJ-45 network interface
≥ 3 USB2.0 ports
≥ 1 Mini1394B interface
≥ 2 RS-232 serial ports
≥ 1 Express card interface
Five-in-one card reader (SD, MMC, XD, MMS, MMSPRO)
Docking station interface:
≥ 2 2 RS-232 serial ports
≥ 1 LPT interface
≥ 2 USB2.0 ports
≥ 1 RJ-45 network interface
≥ 1 VGA interface
Five, customer feedback
After a certain squadron of Zhejiang traffic police used this “dynamic highway forensics system” provided by EVOC, it effectively contained the root causes of traffic accidents and changed the “static management” of the fixed electronic police to the “on-site control” of dynamic captured evidence. Achieving the purpose of preventing accidents and better assisting the traffic management department to achieve the goal of creating a safe highway is an important sign for the public security department to improve the ability of science and technology to strengthen the police, especially the level of road traffic management.
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