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System background
Problems with traditional warehouses
Traditional warehousing and stowage management use manual methods, which are cumbersome, inefficient, error-prone and relatively costly. Although most cold storage management uses computer management systems, they still record first and then enter the computer, which has a large human factor. The accuracy rate is not high, falsified data are prone to occur, human resources are wasted, and management and maintenance costs are high. Therefore, the inefficient manual management method is difficult to ensure the correctness of receipt, inspection and delivery, resulting in inventory, delayed delivery, further increasing costs, and losing the opportunity to serve customers, and manual management cannot be a manager Provide real-time, fast, and accurate warehouse operations and inventory information to implement timely, accurate, and scientific decisions.
Customer functional requirements
Warehousing: standardized management, using RFID in and out of the warehouse, reducing the workload of inventory, and controlling the error in and out of goods;
Vehicle management: use electronic tags to record and manage each transport vehicle;
Warehouse environmental management: implement monitoring of environmental information such as warehouse temperature and humidity, and reflect the implementation of data to the query platform.
Safety precaution management: implement the monitoring of the warehouse on-site work conditions to ensure that the warehouse entry and exit, inventory process can be completed in a reasonable and efficient manner.
Early warning query management: warning management of wrong operation warning, warehouse environment warning, expired medicine warning, inventory over/under warning, etc.
System management: custom reports (including GPS data), permission assignment, automatic system backup, etc.;
Other: can publish freight intermediary information.
System overall scheme
This solution uses long-distance RFID radio frequency identification technology and network information technology to carry out intelligent and information management of enterprise logistics goods, and realize functions such as automatic recording of goods entry and exit information, intelligent warehouse inventory, and output of vehicle status reports.
Advantages of the system
Realize cross-regional centralized management, distributed operation and real-time monitoring functions;
Efficiently complete various business operations, improve warehouse management, and increase efficiency and value;
Improve the recognition rate of items in and out of the warehouse, identify multiple items at the same time, ensure that the number of physical objects and documents are consistent, and improve the efficiency of in and out of the warehouse;
Reduce the inventory cycle, improve the real-time performance of data, and dynamically grasp the inventory situation in real time to realize the visual management of inventory items;
Accurately grasp the inventory situation and optimize the reasonable inventory;
Real-time grasp of the status and changes of the warehouse environment.
Observe the working conditions of the staff in the warehouse in real time and grasp the work progress;
Safely manage the warehouse to prevent illegal acts such as theft and vandalism.
Adopt based onRFIDThe technical cold storage management information system can:
System composition
This system is a high-tech product integrating radio frequency automatic identification technology, wireless communication technology, computer control technology, and network technology. The schematic diagram of the system network topology is shown in Figure 1 below.
The hardware of this system is mainly composed of fixed readers, cargoelectronic label, Management server and other components. The fixed reader is installed at the entrance and exit of the warehouse together with the antenna to obtain the electronic label information on the item and transmit the read electronic label information to the management server for processing through the local area network (or RS485 bus). The handheld reader is used During item inventory, read the electronic tag information of the item, and wirelessly transmit the electronic tag information to the management server for processing.
System workflow
Design
Warehouse storage area management
Goods warehousing
Goods out of the warehouse
Unloading transit
Goods inventory
Item status information
Transportation management
Environmental monitoring and management
Early warning management
software design
The software is mainly composed of the following functional modules: warehouse management module, vehicle management module, and system management module.
Brief Introduction of Equipment
Fixed reader
Supported protocols ISO18000-6B, ISO18000-6C (EPC GEN2)
Operating frequency Standard configuration ISM 902～928MHz and ISM 865～868MHz are optional, other frequency bands can be customized
Working Method Broad Spectrum Frequency Hopping (FHSS)
RF power 0~30dBm, software adjustable
Communication interface Standard configuration RS232, RJ45 (TCP/IP), RS485
Output port 4 groups of OUTPORT (can control the output high and low level)
The reading distance is related to the gain of the external antenna, for example, the reading distance is greater than 8 m when the 12dBi antenna is connected.
Card reading prompt, buzzer and LED
Antenna can be connected to one, two, three, or four antennas, standard TNC connector
Power supply DC + 9V (with AC/DC power adapter)
Dimensions 310mm×210mm×40mm
Weight 2 Kg
Working temperature -20℃~＋80℃
5.2 Handheld reader
Supported protocols ISO18000-6B, ISO18000-6C (EPC GEN2)
Operating frequency Standard configuration ISM 902～928MHz and ISM 865～868MHz are optional, other frequency bands can be customized
Working Method Broad Spectrum Frequency Hopping (FHSS)
Recognition distance: Read tags greater than 2 meters (standard card tags), write tags greater than 1 meter (standard card tags)
Operating system Microsoft WinCE 5.0
CPU Sc2440 Samsung 400MHz
Memory capacity 64M Flash ROM 64MRAM
Data interface Standard configuration: Bluetooth, WIFI; Optional: GPS, two-dimensional bar code, GPRS, one-dimensional bar code
Power supply 3.7V (lithium battery power supply), provide power adapter
Standby time can work continuously for more than 9 hours
Dimensions 210*90*53mm
Net weight 0.5KG
Working temperature -20℃~＋80℃
5.3 Electronic tags of articles
Working frequency 902～928MHz
Compliant with label EPC C1 G2
Reading distance 4m
Available data area 96bit user area
Tag TID 64 bit
Data storage more than 10 years
Antenna material Aluminum
Antenna size 96*49mm
Label size 101*53mm
Minimum bending radius 18mm
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