Application Research on Intelligent Weighing Management of UHF RFID Coal Mine Vehicles
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For a long time, there have been a large number of material transportation vehicles entering and leaving the mining area every day, requiring procedures such as parking, registration, and weighing. The data is manually entered into the computer by the operator, which is not only time-consuming, but also has a large error rate. In addition, it is easy to breed artificial fraud. , Causing a lot of economic losses to the enterprise. Therefore, how to quickly and effectively collect data, remotely inspect and judge the system in the vehicle import and export, weighing area, and unloading area of the mining area has become the primary problem.
Combined with the current status of manual management of mine vehicles, UHF RFID coal mine vehicle intelligent weighing management can automatically record the license plate number, weight information, time information, etc. of vehicles equipped with electronic tags, and write them into the host database, which can effectively eliminate human intervention Errors, prevent over-balance blockage, cheating, etc., and ensure the accuracy of original data collection.
Before entering the loading area, all transport vehicles use the UHF RFID reader to identify and record the vehicle information on the RFID tag, and weigh it. After the weighing is completed, the server automatically records the weighing information, and the display screen displays the weighing information; transportation The vehicle enters the loading area to load the ore. After the loading is completed, it drives out of the loading area and weighs again. The weight information is automatically entered into the system, and LEDs give weight reminders; the transport vehicle arrives at the destination and enters the unloading area to record vehicle information through RFID identification , And weighing. After the weighing is completed, the server automatically records the weighing information, and the display shows the weighing information; the transport truck is unloaded, and the weighing is performed after the unloading is completed, and the weight information is finally recorded. Through information comparison, it is judged whether there are omissions or residues in the mine. The ultra-high frequency RFID coal mine weighing management system can automatically measure the coal weight through the information when the coal truck enters and exits the site, and calls the data in the host database at any time to query or form a report.
RFID technology coal yard vehicle management workflow:
1. Admission registration
The mine registration office first registers the vehicles entering the mine and allots them a special mining label, and then saves the label’s card number, vehicle license plate number, vehicle owner’s name, entry time and entry location related information in The host database.
2. Invoicing
Only customers who have been issued a special tag for ore transportation can go to the ticketing office of the mine to issue an invoice to purchase ore.
3. Weigh the empty car
After the customer issues the ticket, the ore truck can be driven into the truck scale channel for weighing. The vehicle detector installed at the crossing senses the entry of the car and transmits the signal to the front barrier and signal light. The barrier is immediately closed and the signal light turns red. Prompt the driver to drive slowly, and at the same time ask the weighing instrument and reader to start working. After the tag on the mining truck is read by the reader, the reader transmits the information of the vehicle to the host, and instructs the electronic scale to start transmitting the weight information of the vehicle. At the same time, the camera monitors whether the vehicle is parked at the designated position and captures the image. When the host receives the card number and weight information, it accurately records and backs up the information, and then issues an instruction to open the barrier, and the mine truck drives into the mine for loading.
4. Loading ore
After the empty ore truck has been weighed, it can be driven into the mine to load the ore.
5. Loading ore and weighing
After loading the ore, the truck needs to enter the truck scale again for weighing. The vehicle detector installed at the crossing senses the entry of the car and transmits the signal to the barrier and signal light in front. The barrier is immediately closed and the signal light turns red to indicate The driver drove slowly, and at the same time asked the weighing instrument and reader to start working. After the tag on the mine truck is read by the reader, the reader antenna transmits the information of the car to the host, and instructs the electronic scale to start transmitting the weight information of the car. At the same time, the camera monitors whether the car is parked at the designated position and captures the image. When the host computer receives the card number and weight information, it accurately records and backs up the information, and then issues an instruction to open the barriers, and the mine truck drives into the mine ticketing office to issue tickets.
6. Invoicing
After the ore truck is loaded, it needs to go to the ticketing office again to issue an invoice. The ticketing office checks whether the information on the two weighings of the ore truck is consistent. This information includes whether the card number of the mining truck is consistent, whether the owner of the vehicle is consistent, whether the brand number is consistent, etc. When all the information is consistent, the billing office will automatically calculate the net weight of the ore shipped according to the management system and issue the bill.
7. Appearance
Finally, the coal truck can drive out of the coal yard with a bill and pass the inspection by the guard. Automatically record vehicle entry time, entry location, vehicle weight, vehicle owner unit and other required information. RFID technology automatically collects fast, which can realize rapid vehicle weighing, improve weighing efficiency, and reduce excessive vehicles And cause the phenomenon of queue overbalance. All over-balanced vehicles are automatically counted and recorded by the computer, eliminating manual intervention, automatically recording data, and automatically verifying and releasing. By realizing automatic measurement, the time required for each operation link is shortened, the connection and unloading capacity of the measurement system is improved, labor intensity is reduced, and labor costs are saved. Through the automatic collection of RFID electronic tags installed on coal transportation vehicles, real-time monitoring of the measurement site can be quickly realized, so that the data collection in the measurement process is fully automated and the data is accurate and fast, ensuring the accuracy and fairness of information collection, and improving work efficiency. Reduce economic losses.
8. Unloading and weighing at the destination
The mine truck arrives at the destination. Before unloading the ore, drive into the truck at the destination for weighing. The vehicle detector installed at the crossing senses that there is a car entering, and transmits the signal to the front barrier and signal light. The barrier is immediately closed and the signal light turns red to prompt driving The operator is driving slowly, and at the same time, the weighing instrument and the reader are required to start working. After the tag on the mining truck is read by the reader, the reader transmits the information of the vehicle to the host, and instructs the electronic scale to start transmitting the weight information of the vehicle. At the same time, the camera monitors whether the vehicle is parked at the designated position and captures the image. When the host receives the card number and weight information, it accurately records and backs up the information, and then issues an instruction to open the barrier.
9. Unloading
After the ore truck is weighed, it can be driven into the mine to unload the ore.
10. Empty car weighed
After the mine truck is unloaded, the empty truck is weighed, and the invoice is issued at the ticketing office. The ticketing office checks whether the information on the two weighings of the mine truck is consistent. This information includes whether the card number of the mining truck is consistent, whether the owner is consistent, and whether the brand number is consistent. And so on, if all the information is consistent, the billing office will automatically calculate the net weight of the ore shipped according to the management system to issue the bill, and collect the ore-transporting special label.
11. Calculate the weighing
The calculation of the whole loading process is divided into 3 calculations, the loading weight is calculated by the relative ratio of the loading weighing and the empty car weighing; the unloading yard weighing is compared with the loading weighing to check whether there is ore leakage during the transportation process; the empty car weighing Calculate the ore weight compared with the unloading yard weighing, and compare with the ore weight calculated for the first time to calculate whether the ore is lost or leftover.
What are the advantages of UHF RFID coal mine vehicle intelligent weighing management?
safety
RFID electronic tags cannot be forged or copied, which fundamentally eliminates the phenomenon of copying, forgery and cheating…
Strengthen management to prevent favoritism and fraud
The UHF RFID electronic tag is pasted on the windshield of the car, and the weight weighed on each platform scale corresponds strictly to one card and one car.
Protect the safety of this area and prevent illegal vehicles from entering
The system can be integrated with the parking lot management system. Only vehicles carrying legally authorized electronic tags can enter the mine loading and weighing area, thereby improving the safety of the area.
Can transmit information over long distances
It can carry out remote control and group control, so that the system can be truly automated and intelligent, and it can be networked with a computer to automatically analyze, calculate and print data records and reports.
Information collection automation
The weighing data output by the truck scale and the electronic tag card number installed on the mining truck are processed by related equipment and transmitted to the computer. The computer displays the weight of the cargo carried by this car and stores it in the computer’s database. Users can perform operations such as querying, summarizing, and printing according to their needs, thereby realizing information collection automation.
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