First, an overview
In an existing warehouse management introduces Zigbee technology for warehouse delivery, inspection, warehousing, a library, allocation, remove Gallery shift, inventory, job link data for automated wireless data collection, wireless data updates.
Ensure that all aspects of data warehouse management input speed and accuracy, and ensure business timely accurate inventory of real data, reasonable to maintain and control inventory. Through the science of coding, can also be easily on article batches, shelf life, etc. Use of system library-management features, you can grasp all inventory position, will help to raise the productivity of warehouse management.Use this system for wireless transmission network, according to warehouse needs to access the temperature, humidity, security and other warehouse information intelligent devices.
The system is fully integrated in a network, an investment and to avoid duplication of multiple applications.Second, the application
1, warehouse application Zigbee system benefits
Improve the management information system data reliability
Efficient and accurate data acquisition, improve work efficiency
Remote wireless data maintenance, efficient central management
Partition count, real-time, dynamic data always updating inventory
Library, the library location management, prevention of human errors
Accurate, efficient, improving the capacity of production jobs
2. pallet (shelf)-digital management advantage
Today's tray (shelf) has become an inevitable trend of logistics.
Tray as the basic unit of digital management, i.e. the tray embedded Zigbee smart identity cards, this does not affect the appearance of the goods, and improve the quality of goods and the average number of units that a whole digital, easy to implement bulk cargo of precise digital management. Zigbee smart identity cards in the application of logistics distribution center is based on digital warehouse management application software, computers, wireless networking technology, modern logistics stereo high-bay warehouse ideas, etc.◆ High working efficiency
◆ Logistics process significantly reduces the breakage rate
◆ The adaptation process of mechanization, automation needs
3. forklifts configuration Zigbee transceiver applications
For logistics applications environment, Zigbee forklift truck is the best choice
■ Consignor, forklift truck configuration Zigbee transceiver can be adjusted according to the actual situation the reading distance signal, flexible application.
■ You can tray the entire process continuous tracking, instead of discrete tracking.
On the whole process cargo warehousing, storage place and a library collection locations do intelligent tracking, than to work to prevent human errors.■ With the warehouse management system, you can implement a single-step type of job control, eliminate manual intervention, increase efficiency, improve and strengthen management, real-time detailed inventory and distribution
Three application process
1, warehousing
When the goods enter the via incoming goods warehouse at carousel, each pallet of cargo information through the purchase of reader writes to the tray, and then by computer warehouse management information system operations out of the location, and through a network system will inventory instructions into forklift truck systems, and can be stored in accordance with the requirements to the appropriate location.
2. the library
Forklift received shipment instructions to specify forks for pallets of cargo location.
Fork take the front forklift reader again to confirm the accuracy of the pallet goods and pallet goods to the delivery of the conveyor belt, shipments of carousel readers read pallet label information for accuracy, calibration and correct delivery.3. inventory
Warehouse Reader real-time read in library goods check the label information, real-time inventory data and the database statistics storage information is consistent.
4, cargo area positioning, transfer
Warehouse reader read cargo label information in real time, the control centre according to the reader to judge individual goods storage network, usage statistics, warehouse and accordingly a new storage location for goods.
First, the overall network architecture
The overall system is divided into three-layer structure:
Overall network chart
1. throughout the warehouse area according to warehouse size scene environment configuration SC8836B remote transceiver modules set up wireless data backbone network.
2, each with dual-band warehouse location transceiver modules SC8836A + b, always collect inventory information, warehouse with warehouse management software system for the allocation of cargo location cargo space.
And positioning transceiver modules on the tray configuration information cards for transmitting power, sleep interval, the card number information, sound and light tips work mode settings modified.
Warehouse diagram
3. tray intelligent information card to send information to the system regularly.
Assurance system inventory, cargo space usage always updating, configurable audible prompts module, on the library to inventory, the library navigation tips.
Mobile and handheld devices
4, forklift truck containing card reader into the library, a library, library for the cargo, the cargo space than validation.
Configurable display system, the system library, a library, move target position, target library number displayed on the screen that prompts the forklift operators accurate operation.5, handheld devices, you can adjust own device transmitting power, frequency.
5.1 library search cargo:
Staff carry handheld devices into the library looking for goods, target cargo configuration smart card receives a signal, sound and light tips, guide find cargo staff quickly locate.
5.2 warehousing inventory:
Staff regularly using handheld devices, artificial inventory closer to read pallet information card information, and manage system, manual inventory location cargo variety, quantity, date of production is in line with the background system.
If not, you can spot an amendment to the system information, or information on the smart card.5.3 warehousing information maintenance
Staff may use handheld devices to storage tray information for maintenance, storage pallets and freight and quantity information written to the information system.
Out tray and cargo varieties and quantity of information written to the information system.Second, the workflow description
1, warehousing processes:
(1) carriage of goods by transport unit takes to the warehouse, the warehouse information system library registration;
(2) information system according to the storage of goods variety, quantity and other conditions, through zigbee wireless networks available to the warehouse query and intelligent allocation of positions for open positions.
(3) according to the distribution of cargo, cargo pallets placed smart card into the smart card write information and information systems positions information, warehousing cargo information matching.
(4) information systems at the same time to send incoming goods distribution forklift truck cargo information, forklift truck assigned according to the position corresponding to the information put into the cargo into the corresponding position.
If incorrect warehouse forklift-mounted systems and warehouse information system are active alarms, prompt and timely correction of forklift trucks.(5) the library is finished, warehousing cargo pallet with a smart card to send inventory data information system.
Always update the inventory status.2, the library processes:
(1) collect the goods to the warehouse information system applications for filing out the library;
(2) information systems enter out cargo information, according to the priority of the library (such as the production date of the priority before the relies on a library) to query a gallery of warehouse goods storage warehouse and inventory status.
And build a library of cargo delivery positions and the corresponding pallet belongs to the goods.(3) issued to the forklift truck, forklift truck out library instruction through zigbee wireless network receives a library, a library ticket belongs cargo tray.
(4) forklift according to the guidelines specified positions the goods, when the forklift is close to the cargo pallet smart card receives the information card profile led lamp starts blinking prompt forklift operators accurate collection.
Forklift truck goods after leaving the library signal coverage after blinking prompts the user to close the smart card into power saving status.(5) the library before loading the goods, through a library of reader or handheld device for final confirmation.
(6) take back, recycling use of smart cards.
Loading a library is complete.I. Introduction: the system hardware
The system consists of four parts: smart cards (cargo pallet configuration), dual-band positioning transceiver (installed in the warehouse, the lower-frequency can be more smart card power), the backbone network transceiver Coordinator and warehouse intelligent information system (software), smart cards and readers are highly integrated micro-power single-chip wireless transceiver and microcontroller made their volume is very small, single-chip transceiver also has a number of manufacturers worldwide unique (burned in a chip), this single-chip transceiver also has received signal strength indication (RSSI).
The new system of smart card and reader, using no need to apply for free ISM band of 2.4G and meet the State channel wireless products 2.4G.1, smart cards (cargo pallet configuration)
(1) hardware features
A) uses high-strength ABS plastic, to prevent wear.
B) can add sound and light alarm function, the library, or to find the time to boot on staff.
，Battery low voltage alarm c), battery capacity and low-voltage information when voluntarily submitted, prompt management personnel to replace the battery.
(2) performance indicators:
A) frequency: 2.4 GHz – 2.488 GHz frequency bands for free, 83 channels, one channel, 3822 32/64-bit PN
B) receiver sensitivity:-97dBm
C) output power: up to + 4dBm
D) control MCU configuration: Atmega88
E) own communication distance: 150/250 metres (only means SC8836A and SC8836A module, use microstrip (PCB) antenna/built-in antenna communication distance, SC8836 and other modules of communication distance can be far more, for example SC8836A (as receiver) and SC8836b (as the transmitter, the use of 5-10 cm small antenna) its communication distance is up to 1500 meters, see our product description
) Provides SMA external antenna interface (option)F) transfer rate: 250 kbits/sec, 125kbs, 38.4 kps, .1.2kps 19.2kps, ... can be set
G) DSSS: DSSS communication, high anti-interference ability, confidentiality;
H) high integration, only a few isolated components, high reliability, low cost
I) TTL interface (3-15); (RS232/RS485 interface for options)
J) 12-MHz input clock operation
K) sleep current receive receive = > & launch)
X) module dimensions: 40 X 17 mm x 5 mm (according to user needs dimensions design)
Y) typical applications: access control system, positioning systems, electronic toll collection system, remote control toys, wireless identification card, etc.;
Z) transmitting power, the channel channel, module number, by wire or wireless means, can be set by the user himself.
2. dual positioning transceiver (read-write)
(1) hardware features
A) uses high-strength wear-resistant ABS plastic, waterproof or cast aluminium material.
B) adopts SC8836A + SC8836b dual-frequency operation, precise positioning and long-distance transmission.
The scope for determining positioning SC8836A and precise positioning through frequency, SC8836b is responsible for receiving smart card upload information, and forwarding information to the shaft Center module.C) indoor and outdoor installation can also be used as a handheld device.
D) according to the actual application of regional regulation signal coverage.
E) automatic, scheduled return status information.
(2) performance indicators
A) frequency: 2.4 GHz – 2.488 GHz frequency bands for free, 83 channel 32/64-bit PN
B) receiver sensitivity:-100dBm
C) output power: up to + 4dBm
D) control MCU configuration: Atmega88 or MSP430
E) own communication distance: 200 m
F) transfer rate: 250 kbits/sec, 38.4 kps, .1.2kps 19.2kps, ... can be set
G) DSSS: DSSS communication, high anti-interference ability, confidentiality;
H) high integration, only a few isolated components, high reliability, low cost
I) DSSS can reset baseband correlation coefficient
J) provides RS232 or RS485 interfaces;
K) run 12-MHz input clock
L) sleep current receive receive = > & launch)
Y) module dimensions: 55 X 24 mm x 6 mm (according to user needs dimensions design)
Z) application: data acquisition and transmission modules, GPS positioning point module, the reader module, etc.
3, backbone data transceiver base stations
(1) hardware features
A backbone of base stations in) warehouse range wireless location information system formed the backbone of the wireless network.
B) using high-strength waterproof cast aluminum materials.
C) automatic, scheduled return status information.
D) according to the actual application of regional regulation signal coverage.
E) backbone between base stations may be in wireless ad hoc networks, data relay, without laying cable or optical fiber.
(2) performance indicators
A) frequency: 2.4 GHz – 2.488 GHz frequency bands for free, 83 channel 32/64-bit PN
B) receiver sensitivity:-100 dBm
C) output power: up to 20dBm
D) control MCU configuration: Atmega88 or MSP430
E) own communication distance: 2000 m (antenna height 8 meters above the sea level, no barrier; increase the Omni Antenna transmission in fed 5000 m)
F) transfer rate: 250 kbits/sec, 38.4 kps, .1.2kps 19.2kps, ... can be set
G) DSSS: DSSS communication, high anti-interference ability, confidentiality;
H) high integration, only a few isolated components, high reliability, low cost
I) DSSS can reset baseband correlation coefficient
J) provides RS232 or RS485 interfaces;
k) 12-M
Hz input clock operationL) sleep current: 10 μ A
M) integrated 64-bit manufacturer ID number
N) maximum receive signal – 20 – 6 dBm
O) with measuring point battery voltage function
P) operating temperature-40 to 85C
Q) emission current: 300 mA
R) receive current: approx. 30 mA
S) operating voltage 1.8 V to 3.6V (typically a rechargeable battery, or 220V power supply)
T) antenna type: external antenna
U) data rate: 250kps (DSSS mode) 1Mps (GFSK mode)
V) crystal oscillator startup time: 1mS
W) frequency synthesizer stabilization time: 100uS
X) transceiver conversion time: 30uS (emission = > > & receive = received emission)
Y) module dimensions: 65 X 30 mm x 6 mm (according to user needs dimensions design)
Z) typical applications: long-distance data transmission, data relay modules, etc.;
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