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Traditional warehouse management generally relies on a non-automated, paper-based system to record and track incoming and outgoing goods. It is completely managed by the internal management of the warehouse. Therefore, the efficiency of warehouse management is extremely low, and the warehouse can be managed. The scale is also small. With the popularization of computer applications, the warehouse management data of most enterprises has begun to adopt computer data system management, but the data is collected and statistically collected by means of paper recording first and then manually inputting the computer. This not only causes a lot of waste of human resources, but also due to human factors, data entry speed is slow and accuracy is low. With the continuous development of the scale of the enterprise, the number of warehouse management materials is increasing, the frequency of storage and storage is increasing rapidly, and the warehouse management operations are also very complicated and diversified. The traditional manual warehouse operation mode and data collection method have been difficult to meet the warehouse. The rapid and accurate requirements of management have seriously affected the operational efficiency of enterprises and become a major obstacle to the development of enterprises.
Second, the system introduction
At present, RFID technology is bringing a huge change to the supply chain field, to identify the advantages of distance, fast, not easy to damage, large capacity and other bar code can not be compared, simplify the complicated workflow, and effectively improve the efficiency and transparency of the supply chain. Shenzhen Aosida Electronics Co., Ltd. RFID-based warehouse management system is to introduce RFID technology into the existing warehouse management, and to the warehouse inspection, warehousing, delivery, transfer, shifting, inventory and other operations. The data is automatically collected to ensure the speed and accuracy of data input in all aspects of warehouse management, to ensure that the enterprise can accurately grasp the real data of the inventory in a timely and accurate manner, and reasonably maintain and control the enterprise inventory. Through the scientific coding, it is also convenient to manage the batch and shelf life of the items. By using the system's location management function, it is possible to grasp the current location of all inventory materials in time, which is conducive to improving the efficiency of warehouse management.
Third, application introduction
3.1. Advantages of RFID systems
The warehouse logistics pallet RFID solution of Shenzhen Aosida Electronics Co., Ltd. is designed for the practical application of the supply chain. The scheme adopts passive electronic label, has long life, no maintenance, unique design, and can be well embedded in the plastic tray, which is not easy to be collided and worn during the transportation of the tray. In addition, the electronic tag can repeatedly write data, which is beneficial to solve the problem of storage and logistics of pallet goods adjustment, assembly, etc. The label can be recycled, which greatly saves the user cost. The system realizes long-distance identification, fast and reliable reading and writing, and can adapt to dynamic reading such as conveyor belt operation, which meets the needs of modern logistics. The advanced data compression technology is adopted in the label information processing, so that the electronic label carries the tray loading information (data packet), and only needs to scan the tray electronic label once to understand the item information, thereby eliminating the manpower required for unpacking and reloading the tray. Material resources, saving time, reducing the error rate and the probability of damage to goods, achieving fast and accurate inventory counts, and improving the overall transparency of corporate logistics. Improve the reliability of data in the management information system, efficient and accurate data collection, improve work efficiency, partition inventory, timely and timely work guidance, accurate and efficient use of scarce resources, improve production capacity
3.2. Tray-type digital management advantages
Today's palletization has become an inevitable trend of logistics. Pallet is used in the logistics industry to facilitate loading, unloading, transportation, storage and distribution of goods. It is a loading and unloading pad composed of a load surface and a forklift socket that can carry a certain number of items. It is a basic logistics handling device and has a wide application value in commodity circulation. It is known as “active ground†and “mobile freight stationâ€. As a basic digital management unit, pallets are embedded with electronic tags on the pallets, which not affects the appearance quality of the goods, but also increases the overall number of digitized units of the goods, facilitating the accurate digital management of large quantities of goods. The application of electronic tags in the logistics distribution center is realized based on digital warehouse management application software, computer wireless network technology, and modern logistics stereo elevated warehouse ideas.
â—† High work efficiency â—† The damage rate in the logistics process is greatly reduced â—† Adapt to the needs of mechanization and automation of the operation process
3.3. RFID forklift application
For logistics applications, RFID forklifts are the best choice. â– When the delivery is delivered, the antenna can be placed closer to the label to improve the reading performance. â– The pallet can be continuously tracked in the whole process instead of discrete tracking. â– With the corresponding warehouse management The system can realize single-step operation control, eliminate manual intervention, improve work efficiency, improve and strengthen management, and master detailed inventory and distribution in real time.
Fourth, the application process
4.1. Storage When the goods enter the warehouse through the inbound conveyor belt, the reader will write the entire pallet barcode information of the compressed processing into the electronic label, and then calculate the shipping position through the computer storage management information system, and through the network system. Send the stock order to the forklift truck system and store it in the appropriate position as required.
4.2. The delivery forklift receives the shipping instructions and forks the palletized goods to the designated location. The forklift front forklift reader reconfirms the accuracy of the pallet cargo, and then sends the palletized goods to the delivery port conveyor. The delivery port reader reads the pallet label information accurately and verifies the shipment without errors.
4.3. Inventory count,
The reader in the warehouse reads the cargo tag information in the library in real time, and checks whether the real-time inventory data is consistent with the statistical storage information in the database.
4.4. Cargo area positioning, the readers in the transfer warehouse read the cargo tag information in real time. The control center judges the storage area of ​​each cargo according to the card reader network, counts the use of the warehouse, and arranges the storage location of the new goods according to this.
Five, AOSID series technical parameters
â—†AOSID electronic tag working frequency 860-960MHz
Transmission distance: 0 to 10 meters
Working mode broad spectrum frequency hopping, fixed frequency mode
Card memory capacity EEPROM total 1024Bits
Programmable memory capacity 928Bits
Card base material ceramic package
Read and write response time read 1.4ms write 30ms
Anti-interference performance anti-collision communication protocol; binary tree anti-collision mechanism. Number of reading cards ≥50/s
Working temperature -40 ° ~ +85 °
â—† AOSID fixed reading and writing equipment is applied to automatic stacker, conveyor and hoist; AOSID reader transmits the read pallet information to PLC for corresponding processing. The AOSID electronic tag not only realizes long-distance recognition and positioning, but also adds parameter configuration function. The user can modify the RF signal transmission interval through the configurator.
1) Working frequency: national standard (920~925MHz), American standard (902~928MHz) or custom frequency band hopping or fixed frequency work;
2) Support Agreement: ISO18000-6B, ISO18000-6C (EPC GEN2)
3) Frequency hopping mode: Broad spectrum frequency hopping (FHSS) or fixed frequency, can be set by software. 4) Working mode: timed automatic card reading, external trigger control card reading or software issuing command card reading, card reading mode can be set 5) RF Power: 0~30dBm, software adjustable 6) Card reading distance: recognition distance adjustment range: 1~12 meters;
7) Card reading sensitivity: double-polarized mode reading card;
8) Card reading time: single label 64-bit ID number reading time <6mS;
9) Antenna parameters: Built-in polarized antenna, gain 12dBi
10) Support interfaces: RS485, RS232, Wiegand26, Wiegand34, RJ45
11) Working voltage: DC+12V;
12) Card reading prompt: Buzzer 13) Power consumption: Maximum power is not more than 4W
14) Working temperature: -20 ° C ~ +80 ° C;
15) Storage temperature: -40 ° C ~ +125 ° C;
16) Operating humidity 20% ~ 95% (no condensation)
17) Dimensions: 227mm × 227mm × 60mm or 450mm × 450mm × 120mm
The interface pins are shown in the table:
â—† AOSID mobile reading and writing device (handset)
For manual stacking: first read the pallet information, then read the barcode information on each shipment of the stacking code one by one, upload the information to the system, and associate it in the database. The USB mobile reader realizes the computer to acquire data through the USB interface. Its advantages are low cost, high performance, safe and reliable, and user-friendly design. Can be applied to logistics, personnel identification, banking systems, etc. The reader interface is USB2.0 and is suitable for smartphones, PDAs, laptops and other USB interface devices. The antenna is an omnidirectional design that provides full visibility and tracking of the target. Compact in shape and easy to carry.
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