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The smart train number recognition system of Qihui Railway is to collect all vehicle number information under the speed of less than 350KM/H through our independent research and development optical intelligent camera, and analyze and process the acquired vehicle number image to automatically identify the current image vehicle number. information. Can solve the current AEI equipment due to the locomotive label failure, lost the problem can not identify the vehicle number. Applicable to locomotives, trains and other different models, different speeds. Under the condition of day and night, the recognition rate of motor vehicles can reach 100%, and the recognition rate of locomotives can reach 90%.
Second, the system composition and workflow
System composition:
Car number camera × 1, compensation light source group × 1, car number intelligent identification software, wheel sensor × 2, passing signal detection equipment × 1;
Hardware parameters:
Camera: Custom HD Camera Recording Frequency: 20-50 frames per second Adaptive speed: 60 km/h Lens: 2.2-8 MM
Image size:1024X912
Image color: color compensation light source: 300W
Recognizable models: HXD3B, DF4, DF4D, HXN3, SS3B, SS3, free database upgrades.
work process: 
The locomotive passes the designated position and triggers the wheel sensor. The passing signal receiving board receives the incoming vehicle signal and passes it to the IPC. The IPC sends control commands to the camera and light, and the camera starts to take photos. The software algorithm intelligently identifies the captured image and counts the recognition result, and obtains the corresponding vehicle number according to the statistical result. At the same time, the software provides a vehicle number modification interface that supports manual modification of the incorrectly identified vehicle number.
Third, technical indicators
1, the camera data transmission mode: the transmission through the network cable, the recognition results to the passing time / image + model car number text saved, the image naming rules are: passing time. Jpg; model car number file naming rules: passing car Time.txt. In the model number file, all the recognition results, vehicle models, and car numbers are stored. Stored in a folder (read, delete files).
3, power supply:
Camera DC12V
Wheel sensor DC12V
Pass signal detection equipment DC12V
Compensation light source AC220V
Fourth, technical requirements
1, real-time models, car number information and a photo can be stored in a folder.
2, can directly extract the contents of the folder.
3, the software provides interface, can easily modify the car number information.
4. The general schematic of the vehicle number recognition system is as follows: The length of the wheel sensor wire is 5 meters.
5. Please describe in detail the camera and fill light control method. Look in the direction of the incoming vehicle. The wheel sensor 1 is installed in front of the camera. The distance between the wheel sensor and the camera is 1.5m. The wheel sensor 2 is installed and the wheel sensor 1 is installed. According to the actual vehicle speed at the site, the time from the mounting position of the wheel sensor 2 to the mounting position of the wheel sensor 1 is about 10S. The camera is 1.5 meters from the outside of the track and 2.3 meters from the track.
The camera controls the fill light control by the host computer software through the network cable. Refer to the vehicle signal detection equipment documentation. The schematic diagram is as follows: 
First, the car number recognition system