Unattended intelligent weighing software system for truck scale based on RFID technology
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I. Overview
For a long time, traditional truck scale weighing is a difficult problem in enterprise weighing and measurement work. Due to the existence of human factors or problems with equipment and processes, cheating has emerged one after another, large and small errors are also continuous, and weighing efficiency cannot be effectively improved. The accumulation of time will bring huge economic losses to the enterprise.
Easy unattended intelligent weighing management system is mainly composed of electronic truck scales, computers, printers, video surveillance, radio frequency card reading systems, traffic lights, barriers and weighing management software. It can be applied to the measurement of goods in mines, ports, garbage disposal and other industries. The system can also be equipped with hardware and software to realize its functions on the basis of the electronic truck scale currently used by the user. The system adopts a standard WINDOWS window interface and Chinese prompts, which makes the user’s operation simple and intuitive, convenient for query and statistical reports, and truly achieves the measurement work on the go, makes the weighing data accurate and reliable, and improves the work efficiency and economic benefits. . There are two operating modes: manual and automatic weighing. In the unattended state, automatic printing of weighing and scales can be completed without manual intervention, which effectively prevents the occurrence of cheating, and is a beneficial assistant for modern metering.
2. Traditional truck scale weighing system
2.1. Working mode of traditional truck scale weighing system
A. Vehicle weighing
B. The driver submits relevant documents
C. The weighman manually enters vehicle-related information
D. Print the receipt after weighing
E. The driver picks up the ticket and leaves
2.2. Common cheating methods of traditional truck scale weighing system
A. Load an empty car or weigh multiple cars at the same time to increase the tare weight of the vehicle and reduce the net weight of the cargo;
B. The heavy truck is not fully loaded, reducing the net weight of the cargo;
C. When the heavy vehicle is weighed, the weighing is artificially pried;
D. Cheating by changing the license plate;
E. Use the remote control device to interfere with the sensor of the truck scale and change the weighing result;
F. The actual transported goods are different from the registered goods;
G. Pretend to claim the goods, pretend to be a customer to pick up the goods;
H. Collusion between inside and outside, guarding and stealing.
3. RFID unattended intelligent weighing system
3.1 Overview of unattended intelligent weighing system
This system adopts the current more cutting-edge RFID electronic vehicle identification technology and advanced weighing and weighing management methods. The weighing process in the weighing operation basically does not require human intervention, so as to minimize the cargo damage of the cargo owner and maximize the balance between the buyer and the seller. The benefits of the weighing link have improved the service level of the weighing operation.
This system is an intelligent weighing system that uses radio frequency identification equipment to automatically identify weighing vehicles, is equipped with a video monitoring system, and cooperates with a computer to automatically complete the weighing and release process. It can standardize the weighing process, improve work efficiency, and effectively avoid human cheating. The situation happened.
“Easy Unattended Intelligent Weighing Software System”, including RFID radio frequency card system, barriers, traffic lights, LED large screen display system, video surveillance system, voice intercom system, remote printing system, anti-remote cheating device, etc.; Centralized storage at the end, and remote output of weighing bills in each weighing room through a network printer; RFID radio frequency long-distance card reading and writing system, road access control system automatically collects information and data for each transport vehicle, conducts anti-cheating inspections, and if the weighing process is not completed , Automatically intercept vehicles.
3.2. Distribution map of unattended intelligent weighing system equipment
3.3. Work flow of unattended intelligent weighing system 
A. All weighing vehicles must be affixed with electronic tags. Before Shangheng weighing, an appointment must be made in advance, and relevant information such as the license plate and the owner must be entered.
B. The weighing process is completely intelligent, without manual intervention; if there is an abnormal situation or manual intervention is required, it can be switched to manual mode at any time.
3.4. Composition of unattended weighing system
Unattended industrial control host
Recommended storage configuration: Advantech industrial computer P4 2.8GHz/512M/80G/17 inch LCD, if you need to record frequently, it is recommended that the hard disk be larger (such as: 500G); at the same time, it is recommended that the motherboard must be a better choice, so that the system will be more stable .
Loadometer data acquisition system
When the vehicle is traveling, the platform scale data collection system is used to collect the weight information collected by the electronic platform scale in real time, and after analysis, the correct weight information is selected and sent to the centralized control center system.
RFID electronic license plate recognition system
The electronic license plate recognition system uses radio frequency identification technology (Radio Frequency Identification, referred to as RFID) to realize vehicle identity recognition, and the system dynamically collects electronic license plate information during the course of the vehicle.
Video surveillance picture capture system
Use surveillance cameras to monitor the weighing of vehicles 24 hours a day, and record videos and save screenshots for later inquiries.
Intelligent barrier control system
It is required to have a railing machine at the front and back of the weighing platform (the railing machine can be omitted for special requirements) to control the orderly weighing of the vehicle. Some traffic signs can be added to the railing of the railing machine, reminding the driver to only drive in from one side and prohibit entering from the other side.
Vehicle control system
The ground-sensing coil detector and infrared through-beam sensor are used to detect the position of the vehicle, and then control the electronic gear lever to automatically raise and lower the lever.
Infrared positioning system
A pair of infrared beamers are installed at both ends of the scale body, and the infrared device is connected to the switch IO card through a signal line. When the light beam is blocked, the infrared beamer sends the signal to the switch IO card, and the platform weighing software extracts the signal from the switch input card. When the alarm signal is detected, the system prohibits the weighing system data saving, and the weighing process is terminated. .
LED large screen display system
The weighbridge uses the led system to display the weighing information in real time when the system is over-skinned and over-skinned, and it can also display information such as customers and vehicles.
Voice broadcast command system
The system will control the voice speaker to play different voice prompts during different weighing processes, such as “please drive the car to the middle and get off, thank you!”, “weighing is completed, please get off the scale, thank you!”, when the weighing is completed The gross weight, tare weight, net weight, etc. of this weighing are then broadcasted by voice.
Self-service human-computer interaction system
A self-service machine is installed on the left side of the weighbridge parking space, which is used to automatically print the weighing ticket, display the weighing information, and realize the real-time communication between the staff and the driver.
3.5 Features of unattended weighing system
A. Data collection adopts system automatic collection as much as possible to reduce human intervention and improve the accuracy and real-time of data collection.
B. Accelerate the speed of overbalance and improve the efficiency of production operations.
C. Standardize the weighing process, plug loopholes, and more effectively avoid the occurrence of cheating.
D. Centralized management of truck scales, one person can manage multiple truck scales, which can reduce the number of truck scales and reduce the burden on the enterprise.
E. Install a self-service human-computer interaction system to replace the weighing room and save construction costs; centralized installation of equipment is convenient for management and prevents man-made damage.
F. Compared with the IC card unattended weighbridge system, our electronic license plate can be read from a long distance, so that the card can be read while the vehicle is moving. The ceramic RFID card has a tamper-proof function, which can prevent drivers from cheating by exchanging cards and license plates.
G. Improve the management of weighing vehicles and achieve the perfect combination of vehicles and cards.
H. Additional functions can be customized according to the needs of the enterprise, and seamless connection with the production system can be realized.
3.6. Description of anti-cheating methods for unattended intelligent weighing system
A. Use the vehicle’s infrared positioning system to detect the position of the vehicle to prevent the vehicle from not being weighed completely.
B. The surveillance system cameras monitor the weighing vehicles from different angles, and take photos and keep them in files, and monitor the loading of empty vehicles, weighing of multiple vehicles at the same time, and human prying.
C. The use of ceramic electronic tag cards has anti-disassembly function, which can prevent drivers from cheating by swapping cards and license plates.
D. The system automatically collects weighing data, and records the weighing system in real time to avoid losses caused by human operation errors.
E. The weighbridge data acquisition system monitors the weighing process in real time to prevent human interference with the weighbridge sensor to cheat.
F. When sending RFID electronic tags, bind the basic information of the vehicle and the weight of the empty vehicle with the electronic tag card number, and compare each time the empty vehicle weighs, and promptly check the weight change beyond the normal range and give an alarm. In addition, the electronic label card serves as the only legal identification to avoid the occurrence of acts such as fraudulent collection of goods.
Taiyuan EOSINE Software Technology Co., Ltd.
9th Floor, Kaitong Building, 122 Xuefu Street, Taiyuan City, Shanxi Province
Contact: Liu Qiang 13635510759
Phone: 0351-2281243
mail:[email protected]
URL:http://www.eosine.com.cn
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