RFID warehouse management solution

I. Overview

Introduce RFID technology into the existing warehouse management to automatically collect data from various operations such as warehouse arrival inspection, warehousing, outgoing, allocation, shifting, inventory counting, etc., to ensure data input in all aspects of warehouse management The speed and accuracy of the company ensure that the company can grasp the real data of the inventory in a timely and accurate manner, and reasonably maintain and control the company’s inventory. Through scientific coding, it is also convenient to manage the batch and shelf life of items. Using the system’s location management function, you can also grasp the current location of all inventory materials in a timely manner, which is conducive to improving the efficiency of warehouse management.

Two, application introduction

1.1. RFID system revenue

Improve the reliability of data in the management information system

Efficient and accurate data collection improves work efficiency

Partition inventory, real-time

Timely work guide

Use scarce resources accurately and efficiently to improve production capacity

1.2. Advantages of tray-based digital management

Nowadays, palletization has become an inevitable trend of logistics. As the basic digital management unit, the pallet is embedded with electronic tags, which will not affect the appearance quality of the goods, but also increase the overall digital average unit number of the goods, which facilitates the realization of accurate digital management of large quantities of goods. The application of electronic tags in logistics distribution centers is based on digital warehouse management application software, computer wireless network technology, and modern logistics three-dimensional high-bay warehouse ideas.

◆ High working efficiency
◆ The damage rate in the logistics process is greatly reduced
◆ Meet the needs of mechanization and automation in the operation process

1.3. RFID forklift application

For logistics application environment, RFID forklift is the best choice
■ When receiving and dispatching, the antenna can be closer to the position of the tag to improve the reading performance
■ The pallet can be tracked continuously in the whole process instead of discrete tracking
■ With the corresponding warehouse management system, it can realize single-step operation control, eliminate manual intervention, improve operation efficiency, improve and strengthen management, and grasp detailed inventory and distribution in real time

2. Application process

2.1. Storage
When the goods enter the warehouse through the entrance conveyor belt, the information of each pallet is written into the pallet through the entrance reader and writer, and then the delivery position is calculated through the computer warehouse management information system, and the inventory instruction is sent to the forklift vehicle system through the network system. It is required to be stored in the corresponding cargo space.

2.2. Delivery
The forklift receives the shipping instruction and picks up the pallet from the designated cargo location. Forklift the front forklift reader to reconfirm the accuracy of the pallet goods, and then send the pallet goods to the conveyor belt at the outbound port, and the conveyor belt reader at the outbound port reads whether the pallet label information is accurate and verifies that the shipment is correct.

2.3. Inventory counting,

The reader/writer in the warehouse reads the label information of the goods in the warehouse in real time, and checks whether the real-time inventory data is consistent with the warehousing information counted in the database.

2.4. Cargo area positioning and transfer

The reader in the warehouse reads the label information of the goods in real time, and the control center judges the storage area of ​​each goods according to the reader network, counts the usage of the warehouse, and arranges the storage location of the new incoming goods accordingly.

Four, hardware support

1. System hardware

◆RFID tag

RFID tags can not only realize long-distance identification and positioning, but also increase the parameter configuration function. The user can modify the radio frequency signal transmission interval through the configurator, and can also switch the label work/sleep state, thereby greatly extending the battery life and effectively solving The active label faces the life-neck bottle.

Performance parameter

Transmission distance: 0～100 meters

Working frequency: 2.4GHz-2.5GHz ISM microwave range

Working mode: read-write type

Configuration function: a, work/sleep mode conversion; b, radio frequency signal transmission interval modification; c, serial number modification.

RF power: 0dBm

Working current: 12～18uA, 3V

Modulation mode: GFSK

Communication rate: 1Mbps

Anti-conflict: can recognize 100 cards at the same time

Service life: more than 4 years

Dimensions: 90*31*11mm

◆ Fixed reading and writing equipment
Used in automated stackers, conveyors, hoists;
The RFID reader will pass the read tray information to the PLC for corresponding processing.

Fixed reading and writing equipment uses advanced 0.18um CMOS circuit, low cost and high density; active RFID readers can also be used in flammable and explosive occasions, such as gas stations, chemical plants, etc., due to their low power consumption characteristics . The reader interface is diversified, which is suitable for various radio frequency identification schemes, and can also carry out various network layouts. The antenna is an omnidirectional design, which can identify and track targets in all directions. Users can adjust the recognition distance of the reader according to actual needs to make the recognition range more accurate.

Performance parameter

Identification method: omnidirectional identification, standard λ/4 rubber whip antenna

Recognition distance: 0～100 meters adjustable

Working frequency: 2.4GHz-2.5GHz ISM microwave range

RF power: 0dBm

Receiving sensitivity: -90dBm

Working current: 50mA, 9V

Modulation mode: GFSK

Working mode: direct mode/buffered mode

Communication rate:1Mbps

Anti-conflict: can recognize 100 cards at the same time

Interface mode: RS232/485, TCP/IP

Working temperature: -40～80 ℃

Moisture resistance: 95% (non-condensing)

Dimensions: 126*104*28mm

◆ Mobile reading and writing equipment

For manual stacking: first read the pallet information, and then read the barcode information on each of the stacked goods one by one, upload the information to the system, and associate it in the database.

The USB mobile reader/writer implements the computer to obtain data through the USB interface. Its advantages are low cost, high performance, safety and reliability, and humanized design. It can be applied to logistics, personnel identification, banking systems, etc. The reader interface adopts USB2.0, which is suitable for smart phones, PDAs, notebook computers and other USB interface devices. The antenna is an omnidirectional design, which can identify and track targets in all directions. Exquisite appearance, easy to carry.

Performance parameters:

Recognition method: omnidirectional recognition, chip antenna

Recognition distance: 0～30 meters

Working frequency: 2.4GHz-2.5GHz ISM microwave range

RF power: 0dBm

Receiving sensitivity: -90dBm

Modulation mode: GFSK

Working mode: direct mode

Communication rate: 1Mbps

Anti-conflict: can recognize 100 cards at the same time

Interface mode: USB2.0

Working temperature: -40～80 ℃

Moisture resistance: 95% (non-condensing)

Shell material: plastic shell

Dimensions: 68*20*8mm