CN111328037A - Highway tunnel communication system and communication method based on Bluetooth MESH technology - Google Patents
Highway tunnel communication system and communication method based on Bluetooth MESH technology Download PDFInfo
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- CN111328037A CN111328037A CN202010166834.5A CN202010166834A CN111328037A CN 111328037 A CN111328037 A CN 111328037A CN 202010166834 A CN202010166834 A CN 202010166834A CN 111328037 A CN111328037 A CN 111328037A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
Abstract
The invention relates to a highway tunnel communication system based on Bluetooth MESH technology, which comprises: the system comprises a plurality of MESH routers arranged in an expressway tunnel, at least two MESH configuration servers arranged at an entrance and an exit of the expressway tunnel, a MESH gateway server arranged in the expressway tunnel and a plurality of Bluetooth clients, wherein the MESH routers, the MESH configuration servers and the MESH gateway server form a tunnel backbone MESH network, the MESH configuration servers are used for configuring the Bluetooth clients into MESH nodes of the tunnel backbone MESH network, the MESH routers are in communication connection with the MESH gateway server, the tunnel backbone MESH network is in communication connection with a remote monitoring center through the MESH gateway server, and a plurality of MESH routers transmit data in a multi-hop mode. The invention has the effect of being beneficial to improving the reliability and timeliness of transmitting the data in the tunnel to the remote monitoring center.
Description
Technical Field
The invention relates to the technical field of tunnel communication, in particular to a highway tunnel communication system and a highway tunnel communication method based on a Bluetooth MESH technology.
Background
Currently, railways or highways are being constructedTime of flightThe tunnel is inevitably required to be opened, and when the rapid speed is brought to people by cheering the railway or the expressway, the safety of vehicles in the tunnel must be ensuredThe operation is smooth. At present, road conditions are increasingly complex, a tunnel shields communication signals to a certain extent so that the signals are weaker, communication information can be transmitted, shared and intercommunicated in time, and a powerful tunnel communication system is needed. And if the tunnel is opened, the accident occurs in the tunnel, and the accident can be timely fed back to the monitoring center.
The traditional Chinese patent with the publication number of CN101639987A discloses a wireless alarm system for preventing secondary accidents of a highway tunnel group, which comprises alarm base stations, a signal repeater, field alarm components, a remote controller and a monitoring center, wherein the alarm base stations are distributed in the tunnel and used for starting alarm signals when accidents occur in the tunnel, the field alarm components are arranged at the entrance of the tunnel, the alarm signals of the alarm base stations are transmitted among the alarm base stations in the tunnel through a wireless network, the accident alarm signals of the alarm base stations are finally transmitted to the remote controller, the field alarm components are driven by the remote controller, follow-up vehicles are reminded to decelerate or avoid entering the tunnel in an acousto-optic image-text mode, and the remote controller is communicated with the monitoring center through a GSM/GPRS network.
The above prior art solutions have the following drawbacks: when the wireless network in the tunnel is blocked or crashed, the alarm signal of the alarm base station cannot be reliably and timely uploaded to the remote controller and the monitoring center.
Disclosure of Invention
Aiming at the defects in the prior art, one purpose of the invention is to provide an expressway tunnel communication system based on the Bluetooth MESH technology, and the other purpose is to provide a communication method suitable for the expressway tunnel communication system based on the Bluetooth MESH technology, which is beneficial to improving the reliability and timeliness of data transmission in a tunnel to a remote monitoring center.
The above object of the present invention is achieved by the following technical solutions:
provided is a highway tunnel communication system based on a Bluetooth MESH technology, comprising: the system comprises a plurality of MESH routers arranged in an expressway tunnel, at least two MESH configuration servers arranged at an entrance and an exit of the expressway tunnel, a MESH gateway server arranged in the expressway tunnel and a plurality of Bluetooth clients, wherein the MESH routers, the MESH configuration servers and the MESH gateway server form a tunnel backbone MESH network, the MESH configuration servers are used for configuring the Bluetooth clients into MESH nodes of the tunnel backbone MESH network, the MESH routers are in communication connection with the MESH gateway server, the tunnel backbone MESH network is in communication connection with a remote monitoring center through the MESH gateway server, and a plurality of MESH routers transmit data in a multi-hop mode.
By adopting the technical scheme, the MESH configuration server at the entrance and the exit of the highway tunnel can detect and configure the Bluetooth client equipment in or entering the tunnel and configure the Bluetooth client equipment as the MESH node of the tunnel backbone MESH network to join the MESH network, then the node can directly carry out multi-hop data transmission with the MESH router of the tunnel backbone MESH network, and further upload the data to the remote monitoring center through the MESH gateway server, thereby being beneficial to improving the reliability and timeliness of data transmission in the tunnel to the remote monitoring center.
The present invention in a preferred example may be further configured to: and the plurality of MESH routers are in ad hoc network communication connection.
By adopting the technical scheme, the MESH network is formed by the ad hoc network communication connection among the MESH routers, and the efficiency of multi-hop transmission of data in the MESH routers is facilitated.
The present invention in a preferred example may be further configured to: the MESH configuration server configures the Bluetooth client into the MESH node of the tunnel backbone MESH network through the steps of broadcasting, inviting, exchanging keys, authenticating and sending configuration parameters.
By adopting the technical scheme, through the steps of broadcasting, inviting, exchanging keys, authenticating and sending configuration parameters, the MESH configuration server configures the Bluetooth client into the MESH node of the tunnel backbone MESH network, so that the Bluetooth client is added into the MESH network, and the security of data transmission is improved.
The present invention in a preferred example may be further configured to: and the MESH nodes are communicated with the remote monitoring center through the tunnel backbone MESH network.
By adopting the technical scheme, the MESH nodes communicate with the remote monitoring center through the tunnel backbone MESH network, the condition of the tunnel can be timely and reliably remotely monitored, and the remote monitoring center can also send messages or instructions to the MESH nodes in the tunnel.
The present invention in a preferred example may be further configured to: the bluetooth client includes a terminal device that performs wireless communication using bluetooth low energy.
By adopting the technical scheme, the Bluetooth client side uses the low-power Bluetooth to carry out wireless communication, so that the power consumption of the system can be reduced, and the energy can be saved.
The present invention in a preferred example may be further configured to: and the Bluetooth client which uses the low-power Bluetooth for wireless communication communicates with the tunnel backbone MESH network through an agent.
By adopting the technical scheme, the Bluetooth client end which uses the low-power-consumption Bluetooth for wireless communication communicates with the tunnel backbone MESH network through the proxy, so that the method and the device can be suitable for various low-power-consumption Bluetooth devices.
The second aim of the invention is realized by the following technical scheme:
the communication method applicable to the highway tunnel communication system based on the Bluetooth MESH technology is characterized by comprising the following steps:
establishing wireless connection with the Bluetooth equipment entering the tunnel through a MESH configuration server arranged in the tunnel, and adding the wireless connection into a tunnel MESH network;
the Bluetooth equipment joining the tunnel MESH network transmits data to the tunnel MESH router;
the tunnel MESH router converges the data to a tunnel MESH gateway server in a multi-hop mode;
and the tunnel MESH gateway server uploads the data to a tunnel remote monitoring center for monitoring and storing.
By adopting the technical scheme, the MESH configuration server in the tunnel of the highway can detect and configure the Bluetooth client equipment in or entering the tunnel and configure the Bluetooth client equipment as the MESH node of the tunnel backbone MESH network to join the MESH network, then the node can directly carry out multi-hop data transmission with the MESH router connected with the self-networking of the tunnel backbone MESH network, and further upload the data to the remote monitoring center through the MESH gateway server for monitoring and storing, thereby being beneficial to improving the reliability and timeliness of data transmission to the remote monitoring center in the tunnel.
The present invention in a preferred example may be further configured to: the establishing of wireless connection with the Bluetooth equipment entering the tunnel through the MESH configuration server arranged in the tunnel and the adding of the wireless connection into the tunnel MESH network comprises the following steps:
the MESH configuration server in the tunnel scans the Bluetooth equipment;
sending the configuration parameters of the tunnel MESH network to the Bluetooth equipment;
authenticating the Bluetooth equipment, and adding the information of the Bluetooth equipment into a routing table of an MESH configuration server after the authentication is passed;
and broadcasting the information of the Bluetooth equipment to the MESH router in the tunnel.
By adopting the technical scheme, the MESH configuration server configures the Bluetooth client entering the tunnel as the MESH node of the tunnel backbone MESH network through the steps of scanning, parameter sending, authentication and broadcasting, and broadcasts the information of the Bluetooth client to the MESH router in the tunnel, so that the security and the reliability of data transmission of the MESH network can be improved.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the MESH configuration server of the entrance and exit of the highway tunnel can detect and configure the Bluetooth client equipment in or entering the tunnel and configure the Bluetooth client equipment as the MESH node of the tunnel backbone MESH network to join the MESH network, and then the node can directly carry out multi-hop data transmission with the MESH router of the tunnel backbone MESH network, so that the data is uploaded to the remote monitoring center through the MESH gateway server, and the reliability and timeliness of transmitting the data in the tunnel to the remote monitoring center are improved.
2. The MESH network is formed by the ad-hoc network communication connection among the MESH routers, and the efficiency of multi-hop transmission of data in the MESH routers is facilitated.
3. Through the steps of broadcasting, inviting, exchanging keys, authenticating and sending configuration parameters, the MESH configuration server configures the Bluetooth client into the MESH node of the tunnel backbone MESH network, thereby adding the Bluetooth client into the MESH network and being beneficial to improving the security of data transmission.
Drawings
Fig. 1 is a schematic structural diagram of a highway tunnel communication system based on the bluetooth MESH technology disclosed in the present invention.
Fig. 2 is a flowchart of a communication method applicable to the above highway tunnel communication system based on the bluetooth MESH technology according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In a first aspect, referring to fig. 1, a schematic structural diagram of a highway tunnel communication system based on a bluetooth MESH technology disclosed in the present invention is shown, where the system 100 includes: the system comprises a plurality of MESH routers 101 arranged in an expressway tunnel, at least two MESH configuration servers 102 arranged at an entrance and an exit of the expressway tunnel, a MESH gateway server 103 arranged in the expressway tunnel and a plurality of Bluetooth clients 104, wherein the MESH routers 101, the MESH configuration servers 102 and the MESH gateway server 103 form a tunnel backbone MESH network, the MESH configuration server 102 is used for configuring the Bluetooth client 104 as a MESH node of the tunnel backbone MESH network, the MESH routers 101 are in communication connection with the MESH gateway server 103, the backbone tunnel MESH network is in communication connection with a remote monitoring center 105 through the MESH gateway server 103, and the plurality of MESH routers 101 transmit data in a multi-hop manner.
Specifically, the bluetooth client 104 includes a terminal device for wireless communication using bluetooth low energy, nowadays, most electronic devices are equipped with bluetooth low energy, such as mobile phones, wearable devices, vehicle-mounted electronic devices and the like, these bluetooth low energy devices all have a bluetooth low energy protocol stack, but are not able to communicate directly with the MESH network, bluetooth clients that use bluetooth low energy for wireless communication first need to communicate with the tunnel backbone MESH network through the proxy function of the bluetooth low energy protocol stack, i.e., the bluetooth low energy protocol stack exposes a proxy GATT interface, which bluetooth low energy devices can use to communicate with the MESH network, and various data are transmitted to a monitoring center through the MESH network, such as image data, voice data, temperature and humidity data and the like in the tunnel acquired by the Bluetooth client device, so as to monitor the condition of the tunnel in real time.
Further, the MESH configuration server 102 disposed at the tunnel entrance/exit configures the bluetooth client 104 entering the tunnel as a MESH node of the tunnel backbone MESH network through the steps of broadcasting, inviting, exchanging keys, authenticating, and sending configuration parameters. The MESH configuration server 102 introduces a brand new GAP broadcast type MESH Beacon broadcast type for supporting various bluetooth to join the MESH network, and various unconfigured bluetooth client devices can show the existence of the MESH Beacon broadcast type by using the information of the broadcast MESH Beacon broadcast type, for example, the bluetooth devices can be started to broadcast by pressing several buttons simultaneously or pressing a certain button for a long time; after receiving the MESH Beacon broadcast information, the MESH configuration server 102 sends an invitation for joining the MESH network to the bluetooth client equipment by starting a configuration invitation PDU (provisioning InvitePDU) information field, the bluetooth client equipment which sends the MESH Beacon information responds, and the information of the MESH client equipment responds in the provisioning capabilities PDU information field; then, the MESH configuration server 102 and the bluetooth client device to be configured may exchange their public keys, which may be static or temporary, directly or out-of-band, etc.; then, entering an authentication step, the bluetooth client device to be configured and started outputs a random number to the user in a certain form, for example, flashing the LED lamp for several times, the user sends the number output by the bluetooth client device to be configured and started to the MESH configuration server 102, and the two devices perform encryption exchange of the random number to complete authentication between the two devices; after the authentication is successfully completed, a session key is generated by the private keys of the two devices and the exchanged symmetric public key, and the session key is then used for protecting subsequent distribution of data required for completing the configuration process, including a security key called a network key (Netkey), after the configuration of the MESH configuration server 102 is completed, a MESH network security parameter, which is the network key Netkey, is allocated to the configured bluetooth client device, so that the bluetooth client device is configured as a node of the MESH network, network information of the node is stored in a node information list on the MESH configuration server 102 for maintenance, and then the node information list is sent to each MESH router 101.
Furthermore, the MESH routers 101 arranged in the highway tunnel are connected in an ad hoc network communication manner and transmit data in a multi-hop manner. Specifically, the MESH routers 101 adopt a dual-frequency MESH networking, and the return and access of each MESH router node in the dual-frequency networking use two different frequency bands, for example, a 2.4 GHz 802.1l b/g channel for local access service, and the return network of the backbone MESH network uses a 5.8 GHz 802.11a channel, which do not interfere with each other; thus, each MESH router can serve the local access user and execute the return transmission and forwarding function at the same time. Compared with single-frequency networking, the dual-frequency networking solves the problem of channel interference of return and access, and greatly improves the network performance. Each MESH router 101 can be in wireless communication connection with adjacent MESH routers to form a MESH multi-hop network, which is beneficial to the multi-hop transmission efficiency of data in the MESH routers, and each MESH router 101 can transmit the data to the adjacent MESH routers temporarily, and then forward the data to the adjacent MESH routers through the adjacent MESH routers until the data is transmitted to the MESH gateway server 103 arranged in the tunnel, so that the reliability of tunnel data transmission is improved, and particularly, the data transmission can be more timely under the conditions of weak WIFI and GPRS signals.
The MESH node communicates with the remote monitoring center 105 through the tunnel backbone MESH network; the MESH nodes (i.e. bluetooth clients 104) of the MESH network are added through the configuration of the MESH configuration server 102 in the tunnel, and the network information (including address information) of the MESH nodes exists in the node information list of the MESH router 101, so that data transmission can be directly performed with the MESH router 101, then the MESH router 101 sends the data to the MESH gateway server 103 in the multi-hop manner, the MESH gateway server 103 packages and securely encrypts the data, and uploads the data to the remote monitoring center 105 through the internet and the like for remote monitoring of the tunnel, so that the tunnel condition can be monitored remotely in time and reliably, and the remote monitoring center can also send messages or control instructions to the MESH nodes in the tunnel.
The implementation principle of the embodiment is as follows: the MESH configuration server of the entrance and exit of the highway tunnel can detect and configure Bluetooth client equipment in or entering the tunnel and configure the Bluetooth client equipment into an MESH node of the tunnel backbone MESH network to join the MESH network, then the node can directly carry out multi-hop data transmission with an MESH router connected with an ad hoc network of the tunnel backbone MESH network, and further upload the data to a remote monitoring center through an MESH gateway server, thereby being beneficial to improving the reliability and timeliness of data transmission in the tunnel to the remote monitoring center.
In a second aspect, referring to fig. 2, a flowchart of a communication method applicable to the above highway tunnel communication system based on the bluetooth MESH technology is disclosed in the present invention, and the method includes:
201. establishing wireless connection with the Bluetooth equipment entering the tunnel through a MESH configuration server arranged in the tunnel, and adding the wireless connection into a tunnel MESH network;
202. the Bluetooth equipment joining the tunnel MESH network transmits data to the tunnel MESH router;
203. the tunnel MESH router converges the data to a tunnel MESH gateway server in a multi-hop mode;
204. and the tunnel MESH gateway server uploads the data to a tunnel remote monitoring center for monitoring and storing.
Further, the establishing a wireless connection with the bluetooth device entering the tunnel through the MESH configuration server disposed in the tunnel and adding the wireless connection into the tunnel MESH network includes:
the MESH configuration server in the tunnel scans the Bluetooth equipment;
sending the configuration parameters of the tunnel MESH network to the Bluetooth equipment;
authenticating the Bluetooth equipment, and adding the information of the Bluetooth equipment into a routing table of an MESH configuration server after the authentication is passed;
and broadcasting the information of the Bluetooth equipment to the MESH router in the tunnel.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A highway tunnel communication system based on bluetooth MESH technique, its characterized in that includes: the system comprises a plurality of MESH routers arranged in an expressway tunnel, at least two MESH configuration servers arranged at an entrance and an exit of the expressway tunnel, a MESH gateway server arranged in the expressway tunnel and a plurality of Bluetooth clients, wherein the MESH routers, the MESH configuration servers and the MESH gateway server form a tunnel backbone MESH network, the MESH configuration servers are used for configuring the Bluetooth clients into MESH nodes of the tunnel backbone MESH network, the MESH routers are in communication connection with the MESH gateway server, the tunnel backbone MESH network is in communication connection with a remote monitoring center through the MESH gateway server, and a plurality of MESH routers transmit data in a multi-hop mode.
2. The bluetooth MESH technology based highway tunneled communication system as claimed in claim 1, wherein said plurality of MESH routers are connected for ad hoc network communication.
3. The system of claim 2, wherein the MESH configuration server configures the bluetooth client as a MESH node of the tunnel backbone MESH network by broadcasting, inviting, exchanging keys, authenticating, and sending configuration parameters.
4. The bluetooth MESH technology based highway tunneled communication system of claim 3, wherein said MESH nodes communicate with said remote monitoring center through said tunnel backbone MESH network.
5. The bluetooth MESH technology-based highway tunneling system according to claim 1, wherein said bluetooth client comprises a terminal device using bluetooth low energy for wireless communication.
6. The bluetooth MESH technology based highway tunneled communication system of claim 5 wherein said bluetooth client using bluetooth low energy for wireless communication communicates with said tunnel backbone MESH network through a proxy.
7. A communication method applied to the bluetooth MESH technology-based highway tunneling system according to any one of claims 1 to 6, comprising:
establishing wireless connection with the Bluetooth equipment entering the tunnel through a MESH configuration server arranged in the tunnel, and adding the wireless connection into a tunnel MESH network;
the Bluetooth equipment joining the tunnel MESH network transmits data to the tunnel MESH router;
the tunnel MESH router converges the data to a tunnel MESH gateway server in a multi-hop mode;
and the tunnel MESH gateway server uploads the data to a tunnel remote monitoring center for monitoring and storing.
8. The communication method of the bluetooth MESH technology-based highway tunneled communication system of claim 7, wherein the establishing a wireless connection with the bluetooth device entering the tunnel through the MESH configuration server set in the tunnel and joining it to the tunnel MESH network comprises:
the MESH configuration server in the tunnel scans the Bluetooth equipment;
sending the configuration parameters of the tunnel MESH network to the Bluetooth equipment;
authenticating the Bluetooth equipment, and adding the information of the Bluetooth equipment into a routing table of an MESH configuration server after the authentication is passed;
and broadcasting the information of the Bluetooth equipment to the MESH router in the tunnel.
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| CN202010166834.5A CN111328037A (en) | 2020-03-11 | 2020-03-11 | Highway tunnel communication system and communication method based on Bluetooth MESH technology |
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Application publication date: 20200623 |