CN114726886A - City proprietary internet of things network system based on Wi-SUN technology - Google Patents
City proprietary internet of things network system based on Wi-SUN technology Download PDFInfo
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- CN114726886A CN114726886A CN202210145274.4A CN202210145274A CN114726886A CN 114726886 A CN114726886 A CN 114726886A CN 202210145274 A CN202210145274 A CN 202210145274A CN 114726886 A CN114726886 A CN 114726886A
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Abstract
The invention discloses a proprietary internet of things network system based on Wi-SUN technology, which comprises: the controller is used for accessing the terminal of the Internet of things; the gateway is connected with the controller by adopting a Wi-SUN technology and used for managing the controller and the Internet of things terminal; the core router is connected with the gateway; and the FAN network management server is connected with the core router and is used for managing the FAN network. The invention is based on a Wi-SUNFAN network, can access an Internet of things terminal conforming to Wi-SUNFAN protocol specification to form an independent running complete local area network system, and provides a stable bedding for smart city construction.
Description
Technical Field
The invention relates to the technical field of smart city Internet of things, in particular to a city special Internet of things network system based on Wi-SUN technology.
Background
The basis of the smart city is to create a huge city Internet of things system, deploy ubiquitous sensor terminals as nerve endings and go deep into each corner of the city, and therefore interconnection of everything is achieved, and therefore the city Internet of things network construction work is particularly important. At present, the construction of urban internet of things networks is divided into two major categories, wherein one major category is an operator network, and the other major category is a private self-constructed network. Among the disadvantages of operator networks are: traffic charges are required, and base station coverage is not complete in some areas, such as NB-IoT construction, is not yet fully widespread. The mature private self-built network is an AP hotspot network and LoRaWAN. The AP hotspot network belongs to a high-speed network, is mainly used in scenes with large bandwidth requirements, such as cameras, voice, mobile terminal networking and the like, and has the defects of small capacity and high cost of access points; although LoRaWAN is a low-bandwidth low-rate network with high capacity, the LoRaWAN needs to be installed at a higher position by taking a tower as a carrier, and the installation cost is high. In summary, the existing urban internet of things network construction still has a series of difficult problems to be solved, such as network coverage, high cost of base station access points, high difficulty in erecting access points, non-standardization of networks, unstable communication transmission and the like.
Wi-SUN is a standard LPWAN network protocol based on IP technology, unifies technical specifications of a physical layer, a link layer, a network layer and a transmission layer based on a global standard IEEE 802.15.4g specification, unifies and manages product testing and specification consistency certification, and finally can ensure the interoperability between certified products. The security mechanism of Wi-SUN includes two blocks of authentication and encryption, the authentication standard support includes 802.1X, EAP-TLS, PKI,802.11i, etc., and the authentication Key is dynamic, needs to be regenerated after expiration, and can ensure that the network can not be hacked at will. The encryption of the data may then use AES 128/256. As can be seen, Wi-SUN is a standardized, secure network protocol standard.
Disclosure of Invention
The invention aims to solve the problems and provides a city proprietary internet of things network system based on Wi-SUN technology, based on a Wi-SUN FAN network, an internet of things terminal conforming to Wi-SUN FAN protocol specification can be accessed to form an independent running complete local area network system, and a firm bedding is made for smart city construction.
In order to achieve the purpose, the invention adopts the technical scheme that:
a proprietary Internet of things network system based on Wi-SUN technology comprises: the controller is used for accessing the terminal of the Internet of things; the gateway is connected with the controller by adopting a Wi-SUN technology and used for managing the controller and the Internet of things terminal; a core router connected to the gateway; and the FAN network management server is connected with the core router and is used for managing the FAN network.
Preferably, the controller is configured on a street lamp pole, and the gateway is configured on a power distribution cabinet.
Preferably, the system further comprises a service system server, and the service system server is connected with the core router.
Preferably, the FAN network management server includes an external network access right management module, configured to manage access rights of the service system server to the controller and the internet of things terminal.
Preferably, the FAN network management server includes a FAN network management service module, configured to store authentication information of the controller and the internet of things terminal that are permitted to access the network.
Preferably, the FAN network management server includes a WEB management service module, configured to add, delete, and group the authentication information, and check the network access statuses of the controller and the internet of things terminal.
Preferably, the network access method of the controller includes the following steps: the controller initiates a network access application to the gateway; the gateway initiates a network access permission check to the FAN network management service module; the FAN network management service module searches and compares the authentication information of the controller, and if the authentication information is matched with the authentication information, the FAN network management service module allows network access; the network access method of the terminal of the Internet of things comprises the following steps: the Internet of things terminal initiates a network access application and forwards the network access application to the gateway through the controller; the gateway initiates a network access permission check to the FAN network management service module; and the FAN network management service module retrieves and compares the authentication information of the Internet of things terminal, and if the authentication information is matched with the authentication information, the FAN network management service module allows network access.
Preferably, the gateway is configured to create a PAN network, the gateway and the street lamp controller connected thereto form a cluster tree topology, and the gateway is configured to designate the street lamp controller as a coordinator of an adjacent cluster; the assigned street lamp controller is used for assigning another street lamp controller as a coordinator of an adjacent cluster.
Preferably, the terminal of the internet of things can apply for accessing any street lamp controller.
Preferably, the controller includes a Wi-SUN communication module integrated with a microcontroller.
The beneficial effects of the invention are:
1. the Wi-SUNFAN network is established based on the controller and the gateway, the FAN network management server is arranged, the network integrity and the independent operation capability are high, and the controller can be accessed wirelessly and a special Internet of things network system can be accessed as long as the Internet of things terminal conforms to the Wi-SUN FAN protocol specification;
2. by improving the Wi-SUN technology as the communication mode of the street lamp controller, an Internet of things network which is interwoven by taking street lamp poles as nodes is constructed, the urban large-area network coverage is achieved, and the network is formed by the street lamp poles;
the FAN network is based on directed acyclic graph network topology, the terminal connection of the Internet of things can guarantee multiple network routing links, and a new routing path can be rapidly and automatically updated under the condition that the routing is damaged; meanwhile, the system has frequency hopping capability, and can perform channel switching under the condition of channel interference so as to ensure stable communication of the terminal of the Internet of things;
4. after the internet of things terminal successfully accesses the network, the internet of things terminal can be accessed by an external network service system with a calling authority.
Drawings
Fig. 1 is a schematic structural diagram of a proprietary internet of things network system according to a first embodiment;
fig. 2 is a schematic structural diagram of a street lamp controller according to a first embodiment;
fig. 3 is a schematic structural diagram of a power distribution cabinet side gateway according to a first embodiment;
fig. 4 is a schematic connection diagram of a proprietary internet of things network system and an external network service system server according to the first embodiment;
fig. 5 shows a correspondence between a network function topology of a proprietary internet of things and a hardware device according to the first embodiment;
fig. 6 is a corresponding relationship between a network routing topology of the proprietary internet of things and hardware devices according to the first embodiment;
FIG. 7 is a flowchart illustrating network management according to one embodiment;
fig. 8 is a network access flow chart of the street lamp controller according to the first embodiment;
fig. 9 is a network access flow chart of the terminal of the internet of things according to the first embodiment.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and more obvious, the present invention is further described in detail with reference to specific embodiments below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Aiming at the current situation problems of high construction cost, nonstandard access specification, unsafe network environment, small access capacity, unstable network link and the like of the urban internet of things network, the embodiment discloses a proprietary internet of things network system based on Wi-SUN technology, which comprises the following components with reference to the attached drawing 1:
and the controller is used for accessing the terminal of the Internet of things.
The terminal of the Internet of things adopts a Wi-SUN wireless communication mode such as a parking sensor, an intelligent garbage can and an intelligent well lid monitor. The corresponding service system can report the device ID of the internet of things terminal applying for network access to the proprietary internet of things network system in this embodiment, and complete the preparation for network access.
After the internet of things terminal is powered on, a network access application is initiated to the adjacent street lamp controller, and after the network access is successful, the network becomes a member of the special internet of things network in the embodiment.
In this embodiment, the controller is configured on a light pole of a street light. Namely, a street lamp controller is arranged on the side of the street lamp, and the street lamp controller adopts the Wi-SUN wireless communication technology.
The street lamp pole is additionally provided with the street lamp controller, which is a precondition for coverage and deployment of the proprietary internet of things network, and the street lamp pole is additionally provided with the street lamp controller, which is also a necessary modification action in urban intelligent lighting construction. The traditional communication modes adopted by the street lamp controller are power line carrier, Zigbee, Sub-1G and the like, the replacement of Wi-SUN has no influence on the cost of the street lamp controller basically, and the street lamp controller can still keep the original communication function. Therefore, the street lamp pole is used as a proprietary internet of things network base station, and the base station construction is equivalent to zero cost increase. In addition, chinese patent document CN207094571U, entitled "a dual-mode communication street lamp controller based on NEMA interface housing", discloses that the street lamp controller has good wireless communication effect and good appearance effect by adopting NEMA structure. Therefore, the street lamp controller adopts a Wi-SUN wireless communication mode, and the original design characteristics can be still kept.
Referring to fig. 2, the street lamp controller mainly includes a power supply, a microcontroller, a Wi-SUN communication module, and a street lamp control unit. The microcontroller is an optional component that may be replaced by a Wi-SUN communication module integration. In the Wi-SUN standard specification, the street lamp controller belongs to the role of a full-function device after being connected to the network.
And the gateway is connected with the controller by adopting a Wi-SUN technology and is used for managing the controller and the terminal of the Internet of things.
In this embodiment, the gateway is configured on the power distribution cabinet. The integrated controller or the gateway is installed on the power distribution cabinet side, a Wi-SUN wireless communication mode is also adopted, the power distribution cabinet side gateway and the street lamp controller are in wireless connection to form a directed acyclic graph network, and the power distribution cabinet side gateway is set as a network master coordinator.
Referring to fig. 3, the power distribution cabinet side gateway mainly includes a power supply, a microcontroller, a Wi-SUN communication module, and a network communication unit. Because the switch board side gateway is used as the centralized control device of the street lamp controller, higher resource processing configuration is needed, and the microcontroller is not omitted generally. The network communication unit is used for being connected with the upper-level network switching equipment, namely the area switch, and realizing data transmission of Ipv4/Ipv 6. In the Wi-SUN standard specification, a power distribution cabinet side gateway belongs to a master coordinator and is responsible for authentication, management and network data exchange of a street lamp controller and an internet of things terminal outside the street lamp controller.
And the area switch is configured in the power distribution machine room. The area switch is connected with the switch cabinet side gateway through an Ethernet or an optical cable.
And the aggregation switch is configured in the core network machine room. The convergence switch is connected with the regional switch through an Ethernet or an optical cable, and the core network machine room can be configured with protective equipment such as a firewall and the like to be accessed first and then connected with the convergence switch.
The core network room is also configured with a core router and a FAN network (field area network) management server.
And the core router comprises a three-layer switch or a router.
Referring to fig. 4, the private internet of things network according to this embodiment may be connected to an extranet service system server. Through a core router of a core network machine room, a service system server of the WAN network can access the Internet of things terminal in the proprietary Internet of things network. The service system servers can be an intelligent lighting platform, a municipal sewage management platform, a municipal gas management platform and the like, the service systems are mainly managed by a municipal department and are communicated through a proprietary network, and the service system servers have very good network security and are not easy to invade.
And the FAN network management server is connected with the core router and is used for managing the Wi-SUNFAN network.
The network system of the proprietary internet of things described in this embodiment follows the FAN specification of the Wi-SUN standard, and a FAN network management server is added to a core network machine room. The FAN network management server comprises a WEB management service module and a FAN network management service module, namely, a WEB management service and a FAN network management service are operated.
The WEB management service is used for accessing and managing the FAN network management service in a WEB manner, and comprises terminal equipment allowing network access, wherein the terminal equipment comprises the addition, deletion and grouping of equipment IDs (authentication information) of an Internet of things terminal and a controller, and the network access condition of the terminal equipment can be checked, so that a network administrator can conveniently perform ordered registration management and network operation and maintenance on the terminal equipment in the proprietary Internet of things network.
The FAN network management service is used for realizing unified equipment ID management storage, namely, the gateway plays a role of an authentication executor, and the FAN network management service module plays a role in information management storage verification. The gateway needs to apply for information verification to the FAN network management service module to judge whether the terminal equipment is allowed to access the network. The number of the terminals of the internet of things exceeds ten thousand orders of magnitude, and in the process of network access permission authentication, the gateway can determine whether to permit network access according to the equipment ID, but the network access position of the terminals of the internet of things cannot be known in advance, and a network administrator does not know which gateway the equipment ID needing to be reported is written into. If the network access permission device ID list is synchronized to each gateway, the processing performance and resource requirements of the gateway are high, and a larger cost is generated. Based on the unified management and storage of the FAN network management service module on the ID list of the network access permission equipment, the network access flexibility of the terminal equipment can be effectively improved, and the hardware requirement of the gateway can be reduced. After the network is accessed, the data transmission does not need to be checked through FAN network management service, and the normal and efficient transmission of the data can be ensured.
In this embodiment, the FAN network management server further includes an external network access right management module, configured to manage access rights of an external network service system to a street lamp controller and an internet of things terminal in a proprietary internet of things network. The FAN network management server operates in a multi-service mode, can perfect and realize a plurality of functions such as network problem diagnosis and the like at the later stage, and has high flexibility and high expansibility.
Referring to fig. 5, according to the FAN specification of the Wi-SUN standard, the terminal of the internet of things in the private internet of things network described in this embodiment belongs to a simplified functional device, the street lamp controller belongs to a full-function device, and the distribution cabinet side gateway belongs to a master coordinator. The FAN network management service is located on server hardware equipment, is the top layer of a network architecture, and participates in the authentication of all power distribution cabinet side gateways on terminal equipment. A power distribution cabinet side gateway serves as a master coordinator to establish a PAN (private area network), and the power distribution cabinet side gateway is networked with surrounding street lamp controllers to form a cluster tree topology. The master coordinator may designate a certain street lamp controller as a coordinator of an adjacent new cluster, and these designated coordinators may continue to designate another street lamp controller as a coordinator of an adjacent new cluster, and so on. Each power distribution cabinet side gateway and the street lamp controller connected with the power distribution cabinet side gateway form a complete PAN network, and a plurality of PAN networks can form a large FAN network. After the FAN network based on the street lamp controller and the power distribution cabinet side gateway is built, the terminal of the Internet of things can apply for adding to any PAN network under the FAN network according to comprehensive information such as signal intensity and the like, and becomes a member of the FAN network.
Referring to fig. 6, according to the FAN specification of the Wi-SUN standard, the internet of things terminal in the proprietary internet of things network described in this embodiment belongs to a leaf node, the street lamp controller belongs to a router, and the gateway on the side of the distribution cabinet belongs to a border router. The FAN network is formed by a power distribution cabinet gateway and a street lamp controller on a street lamp side, and as long as an Internet of things terminal of the urban public utility conforms to Wi-SUN FAN protocol specifications, the FAN network where the street lamp controller is located can be accessed in a wireless mode, and then the FAN network is accessed to a local area network of the special Internet of things network in the embodiment through a router and a boundary router. Each PAN network is a small LAN, and is finally accessed to a core router by a convergence layer switch to form a large LAN. Wherein, the FAN network management server is also positioned in the local area network. Therefore, the proprietary wireless internet of things network system described in this embodiment has higher network integrity and independent operation capability.
The special internet of things network described in this embodiment is provided with a corresponding network management flow and a terminal device network access flow.
Referring to fig. 7, a network management procedure is used to specify network entry management of the terminal device. And the network administrator registers and adds the allowed network access equipment ID to the FAN network management server through the WEB client based on the WEB service, and the WEB management service of the FAN network management server writes the received equipment ID into the FAN network management service database. Besides registering and adding the allowed network access ID, the network administrator can also apply for deleting the registered allowed network access equipment ID so as to release the invalid terminal equipment; and the allowed network access equipment ID can be grouped, the street lamp controller and the Internet of things terminal can be grouped, or the Internet of things terminal can be classified and grouped according to types and municipal units, so that clear equipment management is achieved.
Referring to fig. 8, before the terminal of the internet of things accesses the network, it needs to wait for the street lamp controller and the gateway to complete networking. And the network administrator registers and adds the equipment IDs of all the street lamp controllers to the FAN network server through the WEB client to complete the input of the white list of the basic network. And then, the street lamp controller at the street lamp side initiates a network access application, and the gateway initiates network access permission check to the FAN network management service after receiving the network access application. And the FAN network management service searches and compares according to the allowed equipment ID of the database, if the matched ID can be found, the access to the network is allowed, and otherwise, the gateway refuses the access to the network of the street lamp controller.
And electrifying the power distribution cabinet, starting networking the gateway and the street lamp controllers, waiting for all the street lamp controllers to successfully access the network, and indicating that the FAN network is established if the WEB client side observes that all the street lamp controllers allowed to access the network are accessed to the network.
And after all the street lamp controllers finish networking, the Internet of things terminal can be networked. Referring to fig. 7, the premise of the terminal of the internet of things granting network entry is that the device ID has already been registered. Referring to fig. 9, after the internet of things terminal applies for network access, the street lamp controller forwards the application to the gateway, and the gateway initiates network access permission check to the FAN network management service. And as for the access of the street lamp controller, the FAN network management service searches and compares the ID of the allowed equipment in the database, if the matched ID can be found, the access is allowed, and otherwise, the gateway refuses the access of the Internet of things terminal.
The special internet of things network system of this embodiment based on city wisdom illumination lamp pole construction, optimize the improvement to the street lamp controller, adopt Wi-SUN wireless communication technique, can keep the molding outward appearance of original installation, reach the buildding of wireless network access point simultaneously for wireless network covers builds zero cost basically, and city street lamp does not have the department and is not in, convenient low-cost, realizes the zero dead angle of network and covers.
The special internet of things network system described in this embodiment communicates by using a Wi-suns network, conforms to the network protocol specification of Ipv4/Ipv6, has good unified standardization, is beneficial to long-term use of network construction investment, achieves the purpose of interconnection and intercommunication of the urban internet of things network, and has a good network security environment based on AES encryption and 802.1x authentication, thereby ensuring reliable operation of the urban internet of things network.
The network system of the proprietary internet of things is provided with local area network devices such as an FAN network management server, a convergence switch and a core router, has standardized network management and terminal device networking processes, is a set of complete local area network system operating independently, and can be used for stably laying a smart city.
The proprietary internet of things network system described in this embodiment is based on server management, and the server capability determines the access capability, so that access capacities of ten thousand levels and ten million levels in a city of a single power distribution cabinet can be met, and compared with a traditional AP hotspot, the proprietary internet of things network system has a higher-capacity access capability and a simpler network operation and maintenance, and also has a higher access capacity than a traditional Wi-SUN network application based on gateway storage authentication information.
The FAN constructed by the proprietary Internet of things network is based on directed acyclic graph network topology, the terminal connection of the Internet of things can guarantee multiple network routing links, and a new routing path can be rapidly and automatically updated under the condition of route damage; meanwhile, the system has frequency hopping capability, and can perform channel switching under the condition of channel interference, so that stable communication of the Internet of things terminal is guaranteed.
While the above description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A proprietary Internet of things network system based on Wi-SUN technology is characterized by comprising:
the controller is used for accessing the terminal of the Internet of things;
the gateway is connected with the controller by adopting a Wi-SUN technology and used for managing the controller and the Internet of things terminal;
a core router connected to the gateway;
and the FAN network management server is connected with the core router and is used for managing the FAN network.
2. The Wi-SUN technology based city specific Internet of things network system as claimed in claim 1, wherein the controller is configured on a street light pole, and the gateway is configured on a power distribution cabinet.
3. The Wi-SUN technology-based city-specific Internet of things network system according to claim 1 or 2, further comprising a business system server, wherein the business system server is connected with the core router.
4. The Wi-SUN technology-based city-specific Internet of things network system according to claim 3, wherein the FAN network management server comprises an extranet access right management module for managing access rights of the business system server to the controller and the Internet of things terminal.
5. The Wi-SUN technology based city specific internet of things network system according to claim 1 or 2, wherein the FAN network management server comprises a FAN network management service module for storing authentication information of the controller and the internet of things terminal which are permitted to access the network.
6. The Wi-SUN technology-based city-specific Internet of things network system according to claim 5, wherein the FAN network management server comprises a WEB management service module for adding, deleting and grouping the authentication information and viewing the network access status of the controller and the Internet of things terminal.
7. The Wi-SUN technology-based city-specific Internet of things network system according to claim 6, wherein the network access method of the controller comprises the following steps:
the controller initiates a network access application to the gateway;
the gateway initiates a network access permission check to the FAN network management service module;
the FAN network management service module searches and compares the authentication information of the controller, and if the authentication information is matched with the authentication information, the FAN network management service module allows network access;
the network access method of the terminal of the Internet of things comprises the following steps:
the Internet of things terminal initiates a network access application and forwards the network access application to the gateway through the controller;
the gateway initiates a network access permission check to the FAN network management service module;
and the FAN network management service module retrieves and compares the authentication information of the Internet of things terminal, and if the authentication information is matched with the authentication information, the FAN network management service module allows network access.
8. The Wi-SUN technology-based city-specific Internet of things network system according to claim 1 or 2, wherein the gateway is used for creating a PAN network, the gateway and the street lamp controller connected with the gateway form a cluster tree topology, and the gateway is used for designating the street lamp controller as a coordinator of an adjacent cluster; the assigned street lamp controller is used for assigning another street lamp controller as a coordinator of an adjacent cluster.
9. The Wi-SUN technology-based city-specific Internet of things network system according to claim 8, wherein the Internet of things terminal can apply for access to any one of the street lamp controllers.
10. Wi-SUN technology based city specific internet of things network system according to claim 1 or 2, wherein the controller comprises a Wi-SUN communication module integrated with a microcontroller.
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