CN104394604A - Wireless ad hoc network based electronic price biding system and communication method - Google Patents
Wireless ad hoc network based electronic price biding system and communication method Download PDFInfo
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- CN104394604A CN104394604A CN201410690827.XA CN201410690827A CN104394604A CN 104394604 A CN104394604 A CN 104394604A CN 201410690827 A CN201410690827 A CN 201410690827A CN 104394604 A CN104394604 A CN 104394604A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a wireless ad hoc network based electronic price biding system and a communication method. The wireless ad hoc network based electronic price biding system comprises a plurality of label nodes, a plurality of routing nodes which are in wireless communication with the label nodes, Sink nodes which are in wireless communication with the routing nodes, a label management platform which sends the commodity information to the label nodes, a commodity database and a POS (Point Of Sale) cashing system; the Sink nodes, the routing nodes and the label nodes form into a label wireless network and communicate through a wireless transceiver of an ISM (Industrial Scientific Medical) frequency band and an ad hoc network process confirms to a network administration rule of the wireless ad hoc network based electronic price biding system; the Sink nodes and the label management platform are mutually connected in a wired mode. According to the wireless ad hoc network based electronic price biding system, the electronic price biding system is established through the wireless ad hoc network, the commodity information is updated in real time, the label network is unitedly monitored and managed, and a large-scale wiring can be avoided and route ad hoc network and label low-power-consumption applications can be achieved due to the fact that the label network is in a wireless ad hoc network communication mode.
Description
Technical field
The present invention relates to a kind of electronic price tag board system and Wireless ad hoc networks agreement, the electronic price tag board system based on wireless self-networking of proposition, automatically upgrading merchandise news service for providing for retail location.
Background technology
Along with the development of our times retail business, sales field scale is also increasing, type of merchandize also gets more and more, it is high that traditionally on paper price tag manually upgrades error rate, label Loss Rate is high, poor real, and the renewal of label relies on tally personnel completely, manpower and materials cost raises year by year, and the management mode of paper labels is not suitable with market development demand gradually.
For the drawback of traditionally on paper label, some electronic bin tag systems are there are.Electronic price tag board can not only promote sales field image, improve customer satisfaction, and the price dispute that a lot of human operational error can be avoided to bring, simultaneously its easily price updating pattern can save a large amount of manpower financial capacities and material resources for sales field, cut operating costs and mean larger profit.
Publication number is in the open file of CN201654813U, describe a kind of electronic bin tag system, multiple management end is configured under have employed a station server, each management end manages the electronic bin tag system of the mode of the two-stage point to multi--point of multiple price tag terminal, and management end and server adopt Ethernet to be connected.Publication number is in the open file of CN202533995U, and carrying out transformation to it is that each label is directly connected with server by wireless WiFi.
Still there is following problem in above-mentioned provided scheme: the first, for wired solution, in the sales field run, and the more difficult realization of its construction complexity; The second, for wireless WiFi scheme, when using at short notice for a large amount of label, the loaded down with trivial details human resources wanting at substantial of its manual input process.3rd, connect although label have employed wireless mode, it is set to directly be connected with server, requires very high like this in covering compared with during large regions to the wireless power of server, and the system also bad management when label is too much.
Summary of the invention
Technical problem to be solved by this invention is: for the deficiencies in the prior art, a kind of electronic price tag board system based on wireless self-networking is provided, by wireless self-networking algorithm, realize the optimization contact between system and device and management, to realize the MANET of route and label, the low-power consumption of label, realizes flexibility and the intellectuality of merchandise control.
The present invention solves its technical problem and adopts following technical scheme:
Electronic price tag board system based on wireless self-networking provided by the invention, it comprises multiple label node, multiple routing nodes of radio communication are carried out with described label node, the Sink node of radio communication is carried out with described routing node, the tag control platform of merchandise news is sent to described label node, and merchandising database and POS POS; Described Sink node, routing node and label node form label wireless ad hoc network, are communicated by the wireless transceiver of ISM band; Sink node is undertaken interconnected by wired mode and tag control platform.
Described multiple label node, respectively with unique identify label; Each label node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, display unit and power supply, and wherein control unit is modal processor.
Described multiple routing node, respectively with unique identify label; Each routing node is made up of the control unit be connected with the signal of telecommunication, communication unit and power supply.
Described Sink node, with unique identity, it connects tag control platform and label network; This Sink node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, wired interface unit and power supply.
The frequency range of described Sink node adopts one or more combinations in ISM band.
Described tag control platform feature comprises the binding of tagged items information, label information renewal, Network Expert Systems and management and tag state is monitored.
The above-mentioned electronic price tag board system based on wireless self-networking provided by the invention, its purposes is: for retail location provides the application automatically upgrading and realize the MANET of route and the low-power consumption of label in merchandise news service.
This system is after retail location sets up network, node timing sends heartbeat data to father node, after collecting process, send heartbeat to upper level route, upwards feed back successively, tag control platform end is by the damage of data decision node, during link failure, tag control platform is by the data of feedback, and the node that request was lost efficacy networks, again to solve the stability problem of MANET.
This system is after retail location sets up network, label is in timing wake-up pattern and intercepts the channel of server end, without more new task continuation dormancy, produce when receiving packet or reach timing and interrupt, label is waken up, continue to enter dormant state after receiving reply, to meet the requirement of low-power consumption.
Native system MAC protocol have employed the mode of physical carrier frame and TDMA combination to avoid signal collision, can be good at solving signal collision problem.
What the present invention set up is a kind of comprise wireless, node is larger, multi-hop, self-organizing and node isomorphism MANET, net interior nodes connects into a topological structure flexibly by radio communication, and network topology structure can adding and exiting and dynamic change along with the movement of node or node.
The management of MANET of the present invention meets following rule: in MANET, the network address of equipment distributes Main Basis 3 network parameters: subset number Cm, maximum network degree of depth Lm and maximum sub-route number Rm at most; According to formula (1) calculated address side-play amount Cskip (d) below, wherein d is network depth (Sink network depth is 0), and address offset amount determines the address block size that equipment can distribute subset;
When child node adds network, father node and Sink node or routing node are formula (2) to the computing formula of routing node distribution network address, and the network address computing formula of distributing to label node is formula (3),
A
Router＝A
parent+(index-1)*Cskip(d)+1,(1≤index≤Rm) (2)
A
Label＝A
parent+Rm*Cskip(d)+index,(1≤index≤Cm-Rm) (3)
In formula: index is the sequence number of sub-route or subtab, A
parentfor the father node network address, A
routerfor the routing node network address, A
labelfor the label node network address.
The beneficial effect that the present invention produces is: not only can display of commodity information, can also dynamically update merchandise news, as price movement, commercial promotions, in limited time preferential and commodity are recalled.Electronic tag of the present invention can be connected into network automatically simultaneously, eliminates the manual input problem loaded down with trivial details when a large amount of label is laid.Electronic price tag board system passes through radio communication, the problem that can sales field avoided well to connect up on a large scale, and without the need to moving goods rack, greatly achieves flexibility and the intellectuality of merchandise control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is grid address assignment figure.
In figure: 1. tag control platform; 2.Sink node; 3. merchandising database; 4. routing node; 5. electronic price tag board; 6.POS POS.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but do not limit the present invention.
Electronic price tag board system based on wireless self-networking provided by the invention, its structure as shown in Figure 1, comprise multiple label node, multiple routing nodes 4 of radio communication are carried out with described label node, the Sink node 2 of radio communication is carried out with described routing node 4, the tag control platform 1 of merchandise news is sent to described label node, and merchandising database 3 and POS POS 6.Sink node, routing node and label node form label wireless network, are communicated by the wireless transceiver of ISM band; Sink node is undertaken interconnected by wired mode and tag control platform.
Described multiple label node, each with unique physical address and identify label, corresponding with the commodity that shelf display (needing during label initialization the unique physical address of each label distribution one and the trade name that will show thereof), can store and information that merchandise sales that explicit routing node 4 issues are relevant, and timing sends heartbeat message to routing node 4.Each label node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, display unit and power supply, wherein: control unit is modal processor, can adopt STM32F103C8T6.Wireless communication unit adopts 2.4G wireless communication module CC2500.Display unit is the LCD of low-power consumption, and it is connected with electronic price tag board 5 by SPI.Can power with button cell.
Described multiple routing node 4, respectively with unique physical address and identify label, be in real-time listening pattern, can forward Various types of data in time, expanding coverage area of network, primary responsibility forwards the data that Sink node 2 issues downwards.Each routing node 4 is made up of the control unit be connected with the signal of telecommunication, communication unit and power supply, wherein, that carry out that the communication unit of radio communication adopts with label node is CC2500, that carry out that the communication unit of radio communication adopts with Sink node is NRF905, that control unit adopts is STM32F103C8T6, adopts 3.2V Power supply.
Described Sink node 2, with unique identity, it connects tag control platform 1 and label network, and possessing wired and wireless two kinds of communication modes, is the terminal of all communication datas.Sink node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, wired interface unit and power supply, wherein: that control unit adopts is STM32F103C8T6, that wireless communication unit adopts is NRF905, and what wired interface unit adopted is one or more in TCP/UDP, RS485, RS232, CAN.Adopt 3.2V Power supply.
The wireless communication unit of described Sink node 2, its frequency range adopts one or more combinations in ISM band, and the central core frequency of this ISM band is 433MHz, 915MHz and 2.4GHz.
Described tag control platform 1, its function comprises the binding of tagged items information, merchandise news renewal, Network Expert Systems and management, tag state are monitored and electric quantity of power supply is monitored.Typing and the binding that merchandising database 3 completes label is pointed in the binding of tagged items information.Merchandise news upgrades and refers to that the change of merchandising database 3 information completes the renewal to respective labels merchandise news by management platform.Network Expert Systems refers to that the inbound information by node feeding back can demonstrate the network configuration of whole system in time.Tag state monitoring refers to the whole Wireless ad hoc networks state of monitoring, and whether decision node is online.Electric quantity of power supply monitoring refers to the timely feedback to electric quantity of power supply, produces and report to the police when electricity is not enough.
Described merchandising database 3, is connected with POS POS 6 by wired mode.
As shown in Figure 2, the equipment in this network has unique physical address to grid address assignment of the present invention, distribution network address after networking, and carrys out addressing according to the network address.The network address of equipment distributes Main Basis 3 network parameters: subset number (Cm), the maximum network degree of depth (Lm) and maximum sub-route number (Rm) at most.According to formula (1) calculated address side-play amount Cskip (d) below, wherein d is network depth (Sink network depth is 0), and address offset amount determines the address block size that equipment can distribute subset.
When child node adds network, father node (Sink node or routing node) is formula (2) to the computing formula of routing node distribution network address, the network address computing formula of distributing to label node is formula (3), wherein index is the sequence number of sub-route or subtab, A
parentfor the father node network address, A
routerfor the routing node network address, A
labelfor the label node network address (setting Lm=3, Cm=246, Rm=6 during system), the network address is distributed as Fig. 2.
A
Router＝A
parent+(index-1)*Cskip(d)+1,(1≤index≤Rm) (2)
A
Label＝A
parent+Rm*Cskip(d)+index,(1≤index≤Cm-Rm) (3)
Electronic price tag board system based on wireless self-networking provided by the invention, its course of work is as follows:
First be the foundation of ad-hoc network, at the beginning of network is set up, first described Sink node starts shooting, and just starts to monitor the request of networking, once there be routing node request to network, then himself routing iinformation is sent to child node, and upgrade routing table after start.After described routing node start, meeting sporadically overseas broadcast request networking frame, once request networking frame receives response, just extract the routing iinformation in echo message, and send an ACK to father node, routing node networks successfully.Route networks successfully, the same with Sink node, can monitor the networking request from other routing nodes, if receive the request of networking, then self routing iinformation can be sent to sub-route node, set up new topology.The second step that network is set up is the networking of described label node.Label node has the application demand of low-power consumption, has the rest period that one period longer, and therefore its communication mode is all initiatively communicated with route or Sink by label.When label networks, first the request that self networks is sent, after routing node receives label networking request, respond, and send routing node information, label sets up oneself routing table according to response content, and respond the success of routing node Route establishment, routing node now can send label inbound information by superior node, the inbound information of the final label of one-level one-level can work in coordination with routing iinformation to Sink node, information can be forwarded in server database by Sink, sets up contacting of route and label in a database.Now, if Data Update in POS system database, the merchandise news of database update automatically can be worked in coordination with label node ID and be associated routing iinformation with label and send to Sink node in the lump by system.Sink node sends to corresponding route, by routing forwarding to label by ad-hoc network again.
Further, after electronic tag networks, be in holding state at ordinary times, after timing wake-up or listen to channel information and be switched to operating state again, also just effectively shorten the time of electronic tag open wireless unit, thus reduce its power consumption, the efficiency that improve electronic tag reduces power consumption, can realize the low-power consumption work of electronic bin board, and electronic bin board can at least run more than 2 years, it is greatly convenient to bring to the sales management work of retailer, reduces operation cost.
Native system MAC protocol have employed the mode of physical carrier frame and TDMA combination to avoid signal collision, first, NRF905 and CC2500 (adopts NRF905 between routing node and Sink node, communication between label and routing node adopts CC2500) all carry Physical carrier sense, whether idlely channel is all intercepted before transmission, if the free time, send data, otherwise with regard to random back; Secondly after grid is stablized, the communication of label node and routing node is undertaken by TDMA mode, the signal collision in can avoiding bunch; After network construction success, the communication of routing node and label node has been come by privately owned channel, thus in well solving bunch and bunch between signal collision problem.
Next is route maintenance.The maintenance of route has come primarily of heartbeat synchronization mechanism.No matter label or route can regularly to hop node transmission heartbeat frames in route, after a upper node receives heartbeat frame, clear and definite link is normal, and it is normal to respond link, and route topological does not need with becoming.When label, route repeatedly do not receive response, or in routing node routing table, lower hop node does not all send heartbeat packet always, then link failure is described, produces and reports to the police, and route can delete its lower hop node routing iinformation, and lower hop node need network again.
The above execution mode is only to help reader understanding's one embodiment of the present invention, but protection scope of the present invention is not limited to so special statement.Without departing from the spirit and scope of the present invention, can also make conversion and modification, these all belong to protection scope of the present invention.
Claims (10)
1. the electronic price tag board system based on wireless self-networking, it is characterized in that comprising multiple label node, multiple routing nodes of radio communication are carried out with described label node, the Sink node of radio communication is carried out with described routing node, the tag control platform of merchandise news is sent to described label node, and merchandising database and POS POS; Described Sink node, routing node and label node form label wireless network, are communicated by the wireless transceiver of ISM band; Sink node is undertaken interconnected by wired mode and tag control platform.
2. the electronic price tag board system based on wireless self-networking according to claim 1, is characterized in that described multiple label node, respectively with unique identify label; Each label node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, display unit and power supply, and wherein control unit is modal processor.
3. the electronic price tag board system based on wireless self-networking according to claim 1, is characterized in that described multiple routing node, respectively with unique identify label; Each routing node is made up of the control unit be connected with the signal of telecommunication, communication unit and power supply.
4. the electronic price tag board system based on wireless self-networking according to claim 1, is characterized in that described Sink node, and with unique identity, it connects tag control platform and label network; This Sink node is made up of the control unit be connected with the signal of telecommunication, wireless communication unit, wired interface unit and power supply.
5. electronic price tag board system according to claim 1, is characterized in that, described tag control platform feature comprises the binding of tagged items information, label information renewal, Network Expert Systems and management and tag state is monitored.
6. the electronic price tag board system based on wireless self-networking according to claim 1, is characterized in that the frequency range of described Sink node adopts one or more combinations in ISM band.
7. the electronic price tag board systematic difference based on wireless self-networking in claim 1 to 6 described in arbitrary claim, is characterized in that this system upgrades for retail location provides automatic the application realizing the MANET of route and the low-power consumption of label in merchandise news service.
8. application according to claim 7, it is characterized in that this system is after retail location sets up network, node timing sends heartbeat data to father node, after collecting process, sends heartbeat to upper level route, upwards feed back successively, tag control platform end is by the damage of data decision node, and during link failure, tag control platform is by the data of feedback, the node that request was lost efficacy networks, again to solve the stability problem of MANET.
9. application according to claim 7, it is characterized in that this system is after retail location sets up network, label is in timing wake-up pattern and intercepts channel, without more new task continuation dormancy, produce when receiving packet or reach timing and interrupt, label is waken up, and continues to enter dormant state after receiving reply, to meet the requirement of low-power consumption.
10. application according to claim 7, it is characterized in that setting up be a kind of comprise wireless, node is larger, multi-hop, self-organizing and node isomorphism MANET, net interior nodes connects into a topological structure flexibly by radio communication, and network topology structure can adding and exiting and dynamic change along with the movement of node or node;
The management of MANET meets following rule: in MANET, the network address of equipment distributes Main Basis 3 network parameters: subset number Cm, maximum network degree of depth Lm and maximum sub-route number Rm at most;
According to formula (1) calculated address side-play amount Cskip (d) below, wherein d is network depth (Sink network depth is 0), and address offset amount determines the address block size that equipment can distribute subset;
When child node adds network, father node and Sink node or routing node are formula (2) to the computing formula of routing node distribution network address, and the network address computing formula of distributing to label node is formula (3),
A
Router＝A
parent+(index-1)*Cskip(d)+1,(1≤index≤Rm) (2)
A
Label＝A
parent+Rm*Cskip(d)+index,(1≤index≤Cm-Rm) (3)
In formula: index is the sequence number of sub-route or subtab, A
parentfor the father node network address, A
routerfor the routing node network address, A
labelfor the label node network address.
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| CN106022700A (en) * | 2016-06-14 | 2016-10-12 | 深圳深若科技有限公司 | Ad-hoc-network-communication-based cargo sorting and allocation control method and control system |
| CN106815952A (en) * | 2016-12-14 | 2017-06-09 | 芯海科技（深圳）股份有限公司 | A kind of method of electronic price computing scale wireless self-networking |
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