Usually, when transporting a large number of materials such as ore, coal, garbage and fuel into and out of the wharf, the transportation vehicles need to carry out procedures such as parking, registration and weighing. The operators manually input the data into the computer, which is not only time-consuming, but also has a large error rate. In addition, it is easy to breed human fraud and cause a lot of economic losses to the enterprise. At present, the raw material procurement of large energy consumption enterprises in China accounts for 30% - 50% of the annual output value. However, the measurement loss caused by the above reasons accounts for more than 10% of the total purchase of raw materials every year.
RFID system principle
These problems can be solved by using RFID remote radio frequency identification technology for vehicle intelligent weighing. The principle is to use RFID electronic tags with numbers, and organically combine RFID readers and electronic scales to form an intelligent weighing system. An RFID electronic tag is fixed on the windshield of each vehicle weighing materials, and its ID is stored in the database as the vehicle number to prevent theft.
When the freight vehicle arrives at the transportation destination and passes the truck scale for weighing, it triggers the RFID reader to read the card. The RFID reader transmits the information in the on-board tag to the host, and instructs the electronic scale to transmit the vehicle weight information at the same time; After unloading the goods, when the empty vehicle passes through the truck scale for weighing, the reader writer triggers the card reader, and the RFID reader/writer transmits the information in the on-board label to the host machine. At the same time, it instructs the electronic scale to transmit the vehicle weight information, compares it with the terminal vehicle weight information, and calculates the cargo weight. This weight is compared with the weight of goods transported in the picking area to finally determine whether there is any loss during transportation.
Before entering the loading area, all transport vehicles need to record the vehicle information through RFID identification and weigh. After weighing, the server automatically records the weighing information, and the display screen displays the weighing information; The transport vehicle enters the loading area for loading, drives out of the loading area for weighing again after loading, the weight information is automatically entered into the system, and the LED gives weight prompts; The transport vehicle arrives at the destination, drives into the unloading area, records the vehicle information through RFID identification, and weighs. After weighing, the server automatically records the weighing information, and the display screen displays the weighing information; After the unloading of the transport vehicle, weigh the scale and finally record the weight information. Determine whether there is omission or residue in the shipment through information comparison.
RFID system features
1. Quickly and automatically identify the weighing vehicle information, improve the identification efficiency, and alleviate the phenomenon of vehicle queuing and weighing;
2. RFID automatic identification, accurate data, free from manual management loopholes;
3. It is less affected by the environment and can be used in various harsh environments such as wind / snow / rain / fog;
4. Universal rfid reader writer adopts outdoor waterproof design to ensure long-term stable operation;
5. RFID card reader has rich data transmission interfaces, which can realize data linkage with gates, cameras, etc.
RFID system benefits
The weighing measurement and data collection based on RFID technology can carry out weighing operations in the whole process of admission, delivery and internal allocation, and record and manage commonly used information such as license plate number, goods name, receiving unit and shipping unit, goods specification, model and all information. The specific information module can be developed and designed according to the actual needs of users, eliminating manual records and improving efficiency, It also avoids unpredictable mistakes in manual recording and realizes modern scientific and intelligent recording and management.
