I. System Overview
1. Project Background
In recent years, illegal transportation of highway freight vehicles has become a serious problem that endangers national road traffic safety. It makes highways and bridges overloaded, greatly reducing the service life of roads and bridges; at the same time, the safety factor of vehicles is greatly reduced, constantly causing traffic accidents; it is also easy to cause traffic congestion and environmental pollution.
Governments at all levels across the country have continuously increased their efforts to control the overloaded transportation of highway vehicles and have achieved important phased results. However, due to complex social and economic factors, the national overload detection situation is still very severe, and the hidden dangers of rebound have not been eliminated; consolidating the results of governance and continuously promoting overload detection work is still under great pressure. Therefore, the governance of overloaded transportation of vehicles is a long-term and daily work, which must be persevered. It is crucial to incorporate the governance of overloaded work into a long-term mechanism. It also plays a legal deterrent role on overloaded vehicles, and can also expand its functions to make it a road inspection, crack down on the fluke mentality of illegal transportation operations, and timely control and eliminate various illegal transportation operations including overloaded transportation.
2. Introduction to weighing system
The weighing principle of static truck scale is to park all vehicles on the weighing platform to weigh the whole vehicle. It has high weighing accuracy and clear national standards. However, conventional truck scale can only get the weight of the whole vehicle, but not the axle weight. It can judge whether the whole vehicle is overloaded, but cannot judge whether the axle weight is overloaded. It cannot meet the requirements of the road administration department to achieve the purpose of managing overloaded transportation.
This plan combines our company's years of experience in designing and manufacturing overload detection equipment and its actual application in various regions of the country, carefully studies the use of various overload detection equipment on the market, and comprehensively considers the specific needs of highway management departments for overloaded transportation management. It adopts advanced technology and unique design ideas to develop a dynamic high-precision vehicle weight and axle type detection system. It can weigh both axle weight and total weight, and can distinguish axle type. The axle weight accuracy can also be greatly improved.
2. Composition of overload and overlimit system
1. System features
It can weigh vehicles passing at low speed and automatically determine whether the vehicle weight or axle weight is overloaded;
It can detect the number of axles, axle group, axle weight and vehicle weight of the vehicle;
It can form complete vehicle weighing information, including axle type, axle weight, axle group and total weight;
It can transmit weighing information to the computer through the data interface;
The core part of the system adopts mature and reliable equipment, all of which adopt modular design, easy to maintain and expand, ensuring the high reliability of the system.
The system software is mature, highly reliable, the data is complete and effective, and it can be fully shared, effectively improving work efficiency and eliminating various management loopholes to the greatest extent.
2. System process
The truck is introduced into the weighing lane of the overload station, and the license plate recognition system identifies the license plate number;
The tire (axle) identifier distinguishes the number of axles, and the vehicle weighing system starts to weigh, determine the axle group, and calculate the axle weight.
When all vehicles pass through the vehicle separator and enter the weighing platform, and the scale is in a relatively balanced state, the total weight of the vehicle is recorded and the axle weight is obtained.
The weighing system sends weighing information (license plate number, number of axles, axle weight, total vehicle weight, etc.) to the detection computer. The computer determines whether it is over-limited and displays the detection information such as vehicle weight, over-limit, and over-limit rate on the display screen.
After the vehicle completes the relevant operations, the vehicle guide personnel release the non-over-limited vehicles to leave the detection area according to the information on the display screen, guide the over-limited vehicles to enter the station area for processing, print the over-limited vehicle inspection form, and perform relevant charging operations;
3. System composition and layout plan
3.1 System composition
The over-limit and overload system consists of ZDG four-table dynamic axle weighing scale, control instrument, infrared vehicle separator, weighing platform wheel axle identifier, control cabinet, (optional equipment: license plate recognition system, LED large screen display system, voice prompt system, vehicle guidance system, industrial computer, ticket printer, UPS uninterruptible power supply, over-limit and overload detection system software, monitoring system) and other accessories and cables.
3.2 System layout diagram as shown:
Workflow:
1) Vehicles enter the lane in sequence while maintaining a safe distance, triggering the infrared vehicle separator;
2) Each axle of the vehicle passes through the multi-surface weighing platform;
3) The display controller processes the weighing signal obtained from the sensor of the weighing platform and the wheel sensor signal, separates the axle according to the logical conditions, and effectively handles special situations;
4) The rear of the vehicle leaves the multi-surface weighing platform and the infrared vehicle separator;
5) The display controller comprehensively judges the vehicle end signal based on the occlusion signal detected by the infrared vehicle separator and the weighing signal obtained by the weighing sensor;
6) The display controller processes the weighing signal obtained when the above-mentioned vehicle passes through the weighing platform;
7) The display controller forms a complete weighing information of the whole vehicle, and the complete weighing information includes vehicle speed, axle type, axle weight, axle group weight, total weight, etc.;
8) Complete the weighing process of one vehicle and wait for the weighing of the next vehicle
9) During the entire working process, the system automatically handles various special situations, such as full entry and full exit, repeated entry and exit, and long stay on the weighing platform;
The system can automatically and effectively handle the following vehicle situation, and the following vehicle weighing has no effect on the data accuracy
Post time: Feb-20-2025