CN103002540A - Vehicle-mounted Internet of things system and routing access method based on ZigBee - Google Patents
Vehicle-mounted Internet of things system and routing access method based on ZigBee Download PDFInfo
- Publication number
- CN103002540A CN103002540A CN2012105408910A CN201210540891A CN103002540A CN 103002540 A CN103002540 A CN 103002540A CN 2012105408910 A CN2012105408910 A CN 2012105408910A CN 201210540891 A CN201210540891 A CN 201210540891A CN 103002540 A CN103002540 A CN 103002540A
- Authority
- CN
- China
- Prior art keywords
- zigbee
- module
- vehicle
- access point
- network node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a vehicle-mounted Internet of things system and a routing access method based on ZigBee. The technical scheme includes that the system comprises a plurality of ZigBee vehicle-mounted terminal nodes, a ZigBee fixing access point base station and a management background, wherein the ZigBee vehicle-mounted terminal nodes are connected with the ZigBee fixing access point base station in a ZigBee wireless communication mode, and the ZigBee fixing access point base station and the management background are connected in a wire/wireless communication mode. The system and the method have the advantages that the system can support mutual communication among cars in a region, the driving safety of cars is guaranteed effectively, and cars can conduct data communication through a roadside fixing access point serving as an access point gateway.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of vehicle-mounted Internet of things system based on ZigBee and route cut-in method.
Background technology
Be subject to the current vehicle communication network technology of generally using, intelligent transportation system depends on the infrastructure of disposing in advance at present, under most of the cases, information source by the infrastructure network transmission, the actual range of information send and receive only has hundreds of rice far away, and the information transfer process that causes carrying out across a plurality of basic communication systems is poor efficiency.Therefore, framework possesses the vehicle netbios of short-range communication capabilities, is conducive to generation, propagation and consumption with more direct mode help information, and the efficient that raising information transmits and reduction transmit cost.
Therefore need to set up the system schema based on the vehicle-mounted Internet of Things of Novel Communication technology.Adopt the ZigBee short-range communication technique, realize the research of the key technologies such as information identification, information communication, Geographic mapping of vehicle-mounted Internet of Things, and set up the system model that technology is used.Strengthen the product development of vehicle-mounted Internet of Things and carry out perspective study, be based on the project study of cost economy, and can be exchanged into the technology application, make it to possess the possibility of market extensive use.The theoretical research of the range of application of stiffener networking, the application of filling up vehicle-mounted Internet of Things is blank.Being based on the application study of vehicle-mounted Internet of Things, realizing that the technology of vehicle-mounted Internet of Things is used and commercial the application, also is the application of further enriching Internet of Things, is conducive to like this development of the ZigBee communication technology and vehicle-mounted technology of Internet of things.The ZigBee communication technology is applied in the vehicle-mounted Internet of Things, has both further expanded the range of application of ZigBee technology, promote the theoretical research to ZigBee technology, also the application development for In-vehicle networking technology and technology of Internet of things provides a new direction.
Summary of the invention
For the vehicle communication network technology of generally using at present, the problem that exists aspect information transfer efficiency and communication quality the present invention proposes a kind of vehicle-mounted Internet of things system based on ZigBee and route cut-in method.
A kind of vehicle-mounted Internet of things system based on ZigBee is characterized in that, described system comprises several ZigBee car-mounted terminal nodes, ZigBee fixed access point base station and management backstage;
Wherein, several ZigBee car-mounted terminal nodes are connected with described ZigBee fixed access point base station by the ZigBee communication;
Described ZigBee fixed access point base station is connected with the management backstage by the wire/wireless communication mode.
Described ZigBee car-mounted terminal node comprises sensor assembly, a MCU module, a ZigBee transceiver module, the first antenna, first memory module, display module and the first power management module; Wherein, a described MCU module is connected with described display module, first memory module, sensor assembly, a ZigBee transceiver module and the power management module of being connected respectively; Described sensor assembly is used for gathering the speed of current ZigBee car-mounted terminal node; A described MCU module is used for data are processed; Described first memory module is used for the storage data; Described display module is used for showing the state information of current ZigBee car-mounted terminal node; Described the first power management module is used for providing power supply; A described ZigBee transceiver module is connected with described the first antenna; A described ZigBee transceiver module and the first antenna are used for receiving wireless signal.
Described ZigBee fixed access point base station comprises the 2nd MCU module, the 2nd ZigBee transceiver module, the second antenna, second memory module, second source administration module, remote communication module and GPS locating module; Wherein, described the 2nd MCU module is connected with the GPS locating module with described the 2nd ZigBee transceiver module second memory module, second source administration module, remote communication module respectively; Described the 2nd MCU module is used for data are processed; Described second memory module is used for the storage data; Described second source administration module is used for providing power supply; Described remote communication module is used for realizing telecommunication; Described the 2nd ZigBee transceiver module is connected with described the second antenna; Described the 2nd ZigBee transceiver module and the second antenna are used for receiving wireless signal.
Described the first power management module also comprises mains switch and power supply indicator.
Described second source administration module also comprises mains switch and power supply indicator
A kind of route cut-in method of the vehicle-mounted Internet of Things based on ZigBee is characterized in that, specifically may further comprise the steps:
Step 1: by predicting the current translational speed of vehicle-mounted ZigBee-network node, dynamically adjust and survey threshold value;
Step 2: the received signal strength sequence that the wireless communication network node moving process detects in real time is as basic data, by calculating next received signal strength value constantly of prediction mobile network node;
Step 3: judge when whether next received signal strength value constantly of mobile network node is lower than the detection threshold value of current time; If so, then start immediately detection preparation between wireless communication network node and the access point; No, then return step 1.
In the described step 1, the formula of dynamically adjusting the detection threshold value is:
v=|X(1)/N|/λ
Wherein, X (1) is the signal strength signal intensity sequence, and λ is velocity factor; Thres1 is the scanning threshold value; Thres2 is the handoff threshold threshold value; And Thres=|Thres2-Thres1|; V is the current translational speed of node; N is the number of putting on the time domain, and n=0,, 1 ..., N-1].
If X (1)/N＜0 shows that the received signal strength of present node is in attenuation state, namely the ZigBee-network node moves to the distal direction of access point; If X (1)/N〉0, show that then the signal strength signal intensity of ZigBee-network node is in enhanced situation, vehicle-mounted ZigBee-network equipment is close to access point.If X (1)/N=0 illustrates that vehicle-mounted ZigBee-network equipment is in actionless state.
In the described step 2, the computing formula of next received signal strength value constantly of prediction mobile network node is:
w(n+1)=w(n)-μ(n)e(n)[X(1)/n]
Wherein, w (n+1) is next received signal strength value constantly of mobile network node; W (n) is the signal strength values of current network node present position; E (n) is the signal strength signal intensity sequence error, and e (n)=X (1)/n-X (1)/(n-1); μ (n) adjusts change step for self adaptation.
The computing formula that described self adaptation is adjusted change step is:
Wherein, μ
0Be initial step length; β (n) is convergence rate; And
K is convergence factor; α is setup parameter.
The invention has the beneficial effects as follows that this network system is the mutually intercommunication between the vehicle in the support area not only, the fail safe of effective guarantee Vehicle Driving Cycle; And vehicle can carry out data communication by the roadside fixed access point as the access point gateway.And the route cut-in method that proposes can dope next received signal strength value constantly of mobile network node, for newly route handoff is ready in advance, thereby guarantee that wireless communication network node finished all preparations before reaching the route handoff state, solve mobile network node larger problem of handoff delay in the too fast situation of translational speed.
Description of drawings
Fig. 1 is a kind of vehicle-mounted Internet of things system framework map based on ZigBee provided by the invention;
Fig. 2 is the route handoff access procedure figure of IEEE802.15.4 standard;
Fig. 3 is the ZigBee car-mounted terminal node block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention;
Fig. 4 is the ZigBee fixed access point base station block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention;
Fig. 5 is the ZigBee remote server software block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that following explanation only is exemplary, rather than in order to limit the scope of the invention and to use.
Fig. 1 is a kind of vehicle-mounted Internet of things system framework map based on ZigBee provided by the invention.Among Fig. 1, a kind of vehicle-mounted Internet of things system based on ZigBee is characterized in that, described system comprises several ZigBee car-mounted terminal nodes, ZigBee fixed access point base station and management backstage;
Wherein, several ZigBee car-mounted terminal nodes are connected with described ZigBee fixed access point base station by the ZigBee communication;
Described ZigBee fixed access point base station is connected with the management backstage by the wire/wireless communication mode.
Fig. 2 is that the route handoff access procedure figure routing node access technology of IEEE802.15.4 standard is particularly crucial.Initialization, beginning are formal to be used before access point transmits data starting according to having defined a mobile workstation (MS) in the 802.15.4 protocol specification, could access through three phases: detection phase (Probe), authentication phase (Re-authentication), reconnect the stage (Re-association).
Fig. 3 is the ZigBee car-mounted terminal node block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention.Among Fig. 3, described ZigBee car-mounted terminal node comprises sensor assembly, a MCU module, a ZigBee transceiver module, the first antenna, first memory module, display module and the first power management module; Wherein, a described MCU module is connected with described display module, first memory module, sensor assembly, a ZigBee transceiver module and the power management module of being connected respectively; Described sensor assembly is used for gathering the speed of current ZigBee car-mounted terminal node; A described MCU module is used for data are processed; Described first memory module is used for the storage data; Described display module is used for showing the state information of current ZigBee car-mounted terminal node; Described the first power management module is used for providing power supply; A described ZigBee transceiver module is connected with described the first antenna; A described ZigBee transceiver module and the first antenna are used for receiving wireless signal.
Fig. 4 is the ZigBee fixed access point base station block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention.Among Fig. 4, described ZigBee fixed access point base station comprises the 2nd MCU module, the 2nd ZigBee transceiver module, the second antenna, second memory module, second source administration module, remote communication module and GPS locating module; Wherein, described the 2nd MCU module is connected with the GPS locating module with described the 2nd ZigBee transceiver module second memory module, second source administration module, remote communication module respectively; Described the 2nd MCU module is used for data are processed; Described second memory module is used for the storage data; Described second source administration module is used for providing power supply; Described remote communication module is used for realizing telecommunication; Described the 2nd ZigBee transceiver module is connected with described the second antenna; Described the 2nd ZigBee transceiver module and the second antenna are used for receiving wireless signal.
Fig. 5 is the ZigBee remote server software block diagram of a kind of vehicle-mounted Internet of things system based on ZigBee provided by the invention.Among Fig. 5, the Software for Design of ZigBee car-mounted terminal node comprises:
1) IEEE8.2.15.4 part.This Software for Design directly provides physical layer and MAC layer function by radio frequency chip CC2430.
2) ZigBee upper layer communication agreement.Use ripe protocol stack, should take into full account reliability and the compatibility of protocol stack, adopt Z-Stack.
3) client layer program.Carry out the networking exploitation according to the function of each node and the requirement of transfer of data.The drive software of bottom upwards provides api function, is used for realizing repertoire.
4) terminal software system.Adopt embedded real-time operating system UCOS to carry out system development, and carry out detailed software code design in this system.
Remote server Software for Design such as Fig. 5.Integrated Ethernet interface is realized carrying out wider service application with network service and the accessing Internet of fixed access point base station; Integrated data acquisition and processing, data show in real time, the data record management can by functions such as form and the derivation of EXCEL data, realize information display.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1. the vehicle-mounted Internet of things system based on ZigBee is characterized in that, described system comprises several ZigBee car-mounted terminal nodes, ZigBee fixed access point base station and management backstage;
Wherein, several ZigBee car-mounted terminal nodes are connected with described ZigBee fixed access point base station by the ZigBee communication;
Described ZigBee fixed access point base station is connected with the management backstage by the wire/wireless communication mode.
2. a kind of vehicle-mounted Internet of things system based on ZigBee according to claim 1, it is characterized in that described ZigBee car-mounted terminal node comprises sensor assembly, a MCU module, a ZigBee transceiver module, the first antenna, first memory module, display module and the first power management module; Wherein, a described MCU module is connected with described display module, first memory module, sensor assembly, a ZigBee transceiver module and the power management module of being connected respectively; Described sensor assembly is used for gathering the speed of current ZigBee car-mounted terminal node; A described MCU module is used for data are processed; Described first memory module is used for the storage data; Described display module is used for showing the state information of current ZigBee car-mounted terminal node; Described the first power management module is used for providing power supply; A described ZigBee transceiver module is connected with described the first antenna; A described ZigBee transceiver module and the first antenna are used for receiving wireless signal.
3. a kind of vehicle-mounted Internet of things system based on ZigBee according to claim 1, it is characterized in that described ZigBee fixed access point base station comprises the 2nd MCU module, the 2nd ZigBee transceiver module, the second antenna, second memory module, second source administration module, remote communication module and GPS locating module; Wherein, described the 2nd MCU module is connected with the GPS locating module with described the 2nd ZigBee transceiver module second memory module, second source administration module, remote communication module respectively; Described the 2nd MCU module is used for data are processed; Described second memory module is used for the storage data; Described second source administration module is used for providing power supply; Described remote communication module is used for realizing telecommunication; Described the 2nd ZigBee transceiver module is connected with described the second antenna; Described the 2nd ZigBee transceiver module and the second antenna are used for receiving wireless signal.
4. a kind of vehicle-mounted Internet of things system based on ZigBee according to claim 2 is characterized in that described the first power management module also comprises mains switch and power supply indicator.
5. a kind of vehicle-mounted Internet of things system based on ZigBee according to claim 3 is characterized in that described second source administration module also comprises mains switch and power supply indicator.
6. the route cut-in method based on the vehicle-mounted Internet of Things of ZigBee is characterized in that, specifically may further comprise the steps:
Step 1: by predicting the current translational speed of vehicle-mounted ZigBee-network node, dynamically adjust and survey threshold value;
Step 2: the received signal strength sequence that the wireless communication network node moving process detects in real time is as basic data, by calculating next received signal strength value constantly of prediction mobile network node;
Step 3: judge when whether next received signal strength value constantly of mobile network node is lower than the detection threshold value of current time; If so, then start immediately detection preparation between wireless communication network node and the access point; No, then return step 1.
7. the route cut-in method of a kind of vehicle-mounted Internet of Things based on ZigBee according to claim 6 is characterized in that, in the described step 1, dynamically adjusts the formula of surveying threshold value and is:
v=|X(1)/N|/λ
Wherein, X (1) is the signal strength signal intensity sequence, and λ is velocity factor; Thres1 is the scanning threshold value; Thres2 is the handoff threshold threshold value; And Thres=|Thres2-Thres1|; V is the current translational speed of node; N is the number of putting on the time domain, and n=0,, 1 ..., N-1].
8. the route cut-in method of a kind of vehicle-mounted Internet of Things based on ZigBee according to claim 6 is characterized in that, in the described step 2, the computing formula of next received signal strength value constantly of prediction mobile network node is:
w(n+1)=w(n)-μ(n)e(n)[X(1)/n]
Wherein, w (n+1) is next received signal strength value constantly of mobile network node; W (n) is the signal strength values of current network node present position; E (n) is the signal strength signal intensity sequence error, and e (n)=X (1)/n-X (1)/(n-1); μ (n) adjusts change step for self adaptation.
9. the route cut-in method of a kind of vehicle-mounted Internet of Things based on ZigBee according to claim 6 is characterized in that, the computing formula that described self adaptation is adjusted change step is:
Wherein, μ
0Be initial step length; β (n) is convergence rate; And
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105408910A CN103002540A (en) | 2012-12-13 | 2012-12-13 | Vehicle-mounted Internet of things system and routing access method based on ZigBee |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105408910A CN103002540A (en) | 2012-12-13 | 2012-12-13 | Vehicle-mounted Internet of things system and routing access method based on ZigBee |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103002540A true CN103002540A (en) | 2013-03-27 |
Family
ID=47930544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105408910A Pending CN103002540A (en) | 2012-12-13 | 2012-12-13 | Vehicle-mounted Internet of things system and routing access method based on ZigBee |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103002540A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269058A (en) * | 2014-09-29 | 2015-01-07 | 中国科学院自动化研究所 | Intelligent traffic information collection system and method based on wireless sensor network |
| CN107733877A (en) * | 2017-09-27 | 2018-02-23 | 中科鼎慧（天津）物联网技术有限公司 | A kind of management method and system of Internet of Things wireless telecommunications framework |
| CN108769138A (en) * | 2018-05-08 | 2018-11-06 | 常熟理工学院 | A kind of efficient car networking data communications method |
| CN110784857A (en) * | 2019-11-01 | 2020-02-11 | 杨柳 | High-reliability Zigbee ad hoc network system adopting multiple NB-IoT node gateways |
| CN113726608A (en) * | 2021-08-30 | 2021-11-30 | 阿波罗智联(北京)科技有限公司 | Data processing method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242753Y (en) * | 2008-04-30 | 2009-05-20 | 梁斌 | Monitor for monitoring vehicle |
| CN101902794A (en) * | 2010-08-02 | 2010-12-01 | 清华大学深圳研究生院 | Double-layer fast switching method based on motion prediction in V2I communication |
| US20120250532A1 (en) * | 2011-03-29 | 2012-10-04 | Husted Paul J | System and Method for Clear Channel Assessment that Supports Simultaneous Transmission by Multiple Wireless Protocols |
-
2012
- 2012-12-13 CN CN2012105408910A patent/CN103002540A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242753Y (en) * | 2008-04-30 | 2009-05-20 | 梁斌 | Monitor for monitoring vehicle |
| CN101902794A (en) * | 2010-08-02 | 2010-12-01 | 清华大学深圳研究生院 | Double-layer fast switching method based on motion prediction in V2I communication |
| US20120250532A1 (en) * | 2011-03-29 | 2012-10-04 | Husted Paul J | System and Method for Clear Channel Assessment that Supports Simultaneous Transmission by Multiple Wireless Protocols |
Non-Patent Citations (1)
| Title |
|---|
| 付涛: "基于 ZigBee 的车载物联网技术应用研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269058A (en) * | 2014-09-29 | 2015-01-07 | 中国科学院自动化研究所 | Intelligent traffic information collection system and method based on wireless sensor network |
| CN104269058B (en) * | 2014-09-29 | 2017-01-11 | 中国科学院自动化研究所 | Intelligent traffic information collection system and method based on wireless sensor network |
| CN107733877A (en) * | 2017-09-27 | 2018-02-23 | 中科鼎慧（天津）物联网技术有限公司 | A kind of management method and system of Internet of Things wireless telecommunications framework |
| CN107733877B (en) * | 2017-09-27 | 2020-06-16 | 中科鼎慧（天津）物联网技术有限公司 | Management method and system for wireless communication architecture of Internet of things |
| CN108769138A (en) * | 2018-05-08 | 2018-11-06 | 常熟理工学院 | A kind of efficient car networking data communications method |
| CN110784857A (en) * | 2019-11-01 | 2020-02-11 | 杨柳 | High-reliability Zigbee ad hoc network system adopting multiple NB-IoT node gateways |
| CN113726608A (en) * | 2021-08-30 | 2021-11-30 | 阿波罗智联(北京)科技有限公司 | Data processing method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102622872B (en) | A kind of multi-mode wireless communications vehicle road cooperation data interaction system | |
| CN103002540A (en) | Vehicle-mounted Internet of things system and routing access method based on ZigBee | |
| CN105392126B (en) | The trunking method of a kind of wireless relay apparatus and wireless relay apparatus | |
| CN111386746B (en) | Method for transmitting/receiving random access preamble in wireless communication system and apparatus therefor | |
| CN106600941A (en) | Low-power-consumption wireless ad-hoc network meter reading system | |
| CN105916199A (en) | Systems, methods, and apparatus for a short beacon in low rate WI-FI communication | |
| CN104869586B (en) | A kind of processing method and access point apparatus of dynamic channel detection | |
| CN103632526A (en) | Meter reading system of wireless intelligent meter | |
| CN102196560A (en) | Method for positioning high-accuracy nodes in Zigbee network | |
| CN111263423B (en) | Mobile carrier monitoring terminal and use method thereof | |
| CN206451353U (en) | A kind of low-consumption wireless MANET kilowatt meter reading-out system | |
| CN109194366A (en) | Wireless self-networking frequency hopping radio set based on G3-PLC chip and radio-frequency module | |
| CN105323832A (en) | Information interaction method, device and system of WBAN (wireless body area network) | |
| CN109600809A (en) | A kind of channel switching method, device and equipment | |
| US20130343185A1 (en) | Wireless device and method of short mac frame indication | |
| CN202979022U (en) | Integral network framework for cooperative communication of network of vehicle | |
| CN106452505A (en) | Carrier and wireless MAC layer fusion communication method and device | |
| CN104867350A (en) | Vehicle networking-based navigation method, system, dynamic monitoring method and system | |
| US20160029300A1 (en) | Method and device for configuring link in wireless lan system | |
| CN103369033B (en) | A kind of intelligent transportation bus or train route high-speed communication system based on Wi-Fi | |
| CN111917849A (en) | Internet of things transmission method based on Zigbee and NB-IoT fusion networking | |
| CN106788779A (en) | Beacon frame information method, wireless aps and terminal in wireless aps | |
| CN101374155A (en) | Method for locating client node in wireless netted network and wireless netted network system | |
| CN105897930A (en) | Vehicle cooperative system and cooperative method based on Zigbee | |
| CN102742317B (en) | Communication system, communication method and communication apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |