Bridge non-stop detection
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System Introduction |
The bridge dynamic non-stop overload detection system performs dynamic weighing of freight vehicles traveling on the lanes for pre-detection, requiring no human intervention and not obstructing traffic. If a pre-inspected freight vehicle is found to be illegally overloaded, its weighing data, vehicle image, and license plate number are transmitted to the command center. Simultaneously, highway LED variable message signs display the license plate number and warning information of the illegally overloaded vehicle in real time. Combined with roadside traffic signs, this guides the illegally overloaded freight vehicle to a fixed overload detection station for further inspection, unloading, re-inspection, and penalties.
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Construction Plan |
High-Definition License Plate Recognition Subsystem
The front end of the high-definition security checkpoint monitoring system uses industrial-grade cameras to capture real-time, high-definition images of the front of all vehicles entering and exiting the checkpoint. The images accurately reflect vehicle characteristics (model, color, license plate, etc.), while simultaneously capturing images of drivers and passengers, and detailed vehicle information. This video data, combined with checkpoint information, is transmitted in real-time to the intersection management server and uploaded to the central vehicle violation database.
Non-Stop Weighing and Detection Subsystem
This subsystem consists of sensors, auxiliary equipment, and software. It uses sophisticated algorithms to measure dynamic tire force and vehicle transit time, calculating wheel weight, axle weight, and total weight (such as speed and wheelbase). It can instantly detect overloaded or oversized vehicles, trigger license plate capture, and store the data in a corresponding manner with the overloaded vehicle's weighing data. The non-stop weighing and detection subsystem comes in two types: one composed of quartz weighing sensors and the other composed of bending plate sensors.
Panoramic Video Monitoring Subsystem
This subsystem uses high-definition network dome cameras to monitor the overall environment of the non-stop detection point in real-time.
Information Dissemination Subsystem
The information dissemination subsystem uses domestically common LED variable message signs. These signs are installed approximately 200 meters behind the high-speed weighing system. They display vehicle license plate information, number of axles, and weight to inform overloaded drivers and guide vehicles to the overload control station for re-inspection.
Traffic Guidance System with Signage
This system uses roadside signs. Before the overload control point, signs indicate the presence of an overload monitoring station ahead. After the point, suspected vehicles will follow the signs to the re-inspection station.
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System Characteristics |
1. The permitted speed range for freight vehicles passing through the non-stop weighing detection area is 0.5–100 km/h.
2. When freight vehicles are traveling within the permitted speed range or passing through the non-stop weighing detection area at a reduced speed, the non-stop weighing equipment must accurately measure the total vehicle weight. The accuracy level of the total vehicle weight measurement must be no less than the requirements of JJG907-2006, Total Vehicle Weight Accuracy Level 5.
3. The inspection standards comply with the Regulations on the Administration of Road Traffic for Overweight and Oversized Vehicles (Ministry of Transport Order No. 62 of 2016).
4. Capture one high-resolution frontal image. Based on the image information, the vehicle's license plate area, front and cab features, and front color should be clearly identifiable.
5. Capture images of the vehicle passing through the non-stop weighing inspection area from multiple angles, including the side and rear. Based on the image information, the number of axles, vehicle body color, and basic information about the transported goods should be clearly identifiable.
6. Automatically retrieve license plates and separate vehicles, displaying vehicle axle load, total weight, wheelbase, speed, length, and passage time.
7. Unattended operation; provides high-resolution real-time images of passing vehicles.
8. Laser detection of vehicle width and height, providing information on exceeding width and height limits.
9. External display function, displaying vehicle information such as speeding, overloading, exceeding width and height limits on an LED information board.
10. The display format and content of the LED information board can be customized as needed. 11. Features data fault tolerance, correctly matching weight and license plate number.
12. Automatically transmits and stores images and information of passing vehicles.
13. Provides breakpoint upload functionality; data is automatically uploaded from the point of interruption when the network is restored.
14. For vehicles passing through the main lane of a highway, the system can automatically detect the vehicle's total weight, axle load, axle information, axle weight, number of tires per axle, wheelbase, speed, etc.
15. Accurately and effectively separates vehicles automatically (identifying trailers and semi-trailers), ensuring a one-to-one correspondence between vehicles and data.
16. Includes an automatic caching function, capable of storing a certain amount of data. When data transmission to the front-end high-definition camera unit fails, data can be retransmitted, maintaining data uniqueness and integrity.
17. Features a fault self-diagnosis function; when any equipment or line in the system malfunctions, the system can obtain corresponding fault information, display it on the on-site display device, and transmit this fault information to the high-definition license plate recognition camera. 18. Capable of continuous operation for more than 7 * 24 hours a day in unattended mode.
19. Overall MTBF (Mean Time Between Failures) ≥ 20,000 hours; overall failure rate < 1%.
