Vehicle-mounted sensor network system based on ZIGbee technology and data transmission method

Abstract

The invention provides a vehicle-mounted sensor network system based on a ZIGbee technology and a data transmission method, the system comprises a sensor node, a ZIGbee node, a ZIGbee coordinator and a ZIGbee gateway, sensors form a mesh topology structure based on the zigbee technology, internal and external network isolation is performed, the expansibility of the vehicle-mounted sensor is improved, and the data transmission efficiency of the vehicle-mounted sensor is improved. The accuracy of the vehicle state is improved, and the problems that a can bus can only be connected with 110 nodes at most and only supports a bus topological structure, and fault diagnosis and isolation are difficult are solved.

Description

Technical Field

[0001] The present invention relates to a vehicle-mounted sensor network system, and in particular to a vehicle-mounted sensor network system and a data transmission method based on the ZIGbee technology. Background Art

[0002] At present, vehicle sensors are mainly connected through the CAN (Controller Area Network) bus. Specifically, vehicle sensors (such as radar, camera, temperature sensor, pressure sensor, etc.) are connected to the controller area network (CAN Bus) through the CAN bus to achieve real-time data transmission and sharing. This connection method enables various systems inside the vehicle to work together to monitor and control the operating status of the vehicle. In the CAN bus system, each sensor or control unit is regarded as a node, and they send and receive data through the CAN bus. When the sensor detects a change in the vehicle status, it will send the corresponding data to other nodes, such as the engine control unit, brake control unit, etc. through the CAN bus. After receiving the data, these nodes will perform corresponding processing and control as needed to ensure the safety and normal operation of the vehicle. At present, connecting vehicle sensors through the CAN bus has become one of the standard practices in the automotive industry, which provides strong support for data communication and collaborative work between various systems inside the vehicle.

[0003] However, with the increasing number of vehicle-mounted sensors, existing vehicle-mounted sensors are networked through the CAN bus. The CAN bus can only connect up to 110 nodes and only supports bus topology, making fault diagnosis and isolation difficult. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a vehicle-mounted sensor network system and data transmission method based on ZIGbee technology to solve the problem that the CAN bus can only connect to 110 nodes at most and only supports bus topology structure, making fault diagnosis and isolation difficult. The present invention organizes sensors into a mesh topology structure based on Zigbee technology, thereby improving the scalability of vehicle-mounted sensors, thereby improving the accuracy of collecting sensor data and improving vehicle status.

[0005] In order to achieve the above technical effects, the present invention adopts the following technical solutions:

[0006] According to a first aspect of the present invention, there is provided a vehicle-mounted sensor network system based on ZIGbee technology, including a sensor node, a ZIGbee node, a ZIGbee coordinator and a ZIGbee gateway, specifically:

[0007] The sensor node is composed of one or more sensors, which collect external information through the sensors and synchronize the data to the ZIGbee node;

[0008] The one ZIGbee node can be connected to multiple sensors, and different ZIGbee nodes can be connected to each other, so that the data uploaded by the sensor node is transmitted from one ZIGbee node to other ZIGbee nodes through ZIGbee communication, thereby realizing data transmission between multiple ZIGbee nodes;

[0009] The one ZIGbee coordinator and multiple ZIGbee nodes are connected to form a sensor topology network, and the sensor topology network composed of multiple sensors, ZIGbee nodes and ZIGbee coordinator is used to transmit data of the internal network to realize data transmission between multiple nodes;

[0010] The ZIGbee gateway is used to receive data sent by each sensor node transmitted by the ZIGbee coordinator, convert it into a data format recognizable by the network, and give it to the vehicle module for use or upload it to the Internet of Vehicles server.

[0011] Preferably, the ZIGbee coordinator is capable of organizing and maintaining the sensor network topology network, managing network resources and processing network protocols.

[0012] Preferably, it is characterized in that the vehicle module includes an early warning module and an auxiliary driving module.

[0013] According to a second aspect of the present invention, a data transmission method of a vehicle-mounted sensor network system based on ZIGbee technology is provided, which is implemented by the vehicle-mounted sensor network system based on ZIGbee technology and specifically includes the following steps:

[0014] Step S1: Combine the sensor with the ZIGbee node. When the sensor detects a change in the vehicle state, the sensor sends the corresponding data to other nodes through the ZIGbee node.

[0015] Step S2: connecting the ZIGbee node with the ZIGbee coordinator to form a sensor topology network, wherein the sensor topology network can realize data transmission between multiple nodes;

[0016] Step S3: The ZIGbee gateway receives the data sent by the sensor topology network and converts it into a data format recognizable by the network;

[0017] Step S4: The ZIGbee gateway provides the sensor data to the external vehicle module or uploads it to the Internet of Vehicles server; the external vehicle module receives the sensor data and performs corresponding processing and control to ensure the safety and normal operation of the vehicle.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The vehicle-mounted sensor network system and data transmission method based on ZIGbee technology provided by the present invention can increase the scalable number of vehicle-mounted sensors.

[0020] 2. The vehicle-mounted sensor network system based on ZIGbee technology provided by the present invention is wirelessly networked and does not require line connection.

[0021] 3. The vehicle-mounted sensor network system and data transmission method based on ZIGbee technology provided by the present invention enable sensors to communicate through ZIGbee, thereby isolating the vehicle from an unsafe network to prevent malicious attacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a structural diagram of the vehicle-mounted sensor network system based on ZIGbee technology described in the first embodiment;

[0024] Figure 2 It is a structural block diagram of the vehicle-mounted sensor network system based on ZIGbee technology described in the first embodiment;

[0025] Figure 3 This is a method flow chart of the data transmission method of the vehicle-mounted sensor network system based on ZIGbee technology described in the second embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] First Embodiment

[0029] like Figure 1 , Figure 2 As shown, this embodiment provides a vehicle-mounted sensor network system based on ZIGbee technology. The system can network vehicle-mounted sensors based on ZIGbee communication technology, including the following components: sensor nodes, ZIGbee nodes, ZIGbee coordinators and ZIGbee gateways, specifically:

[0030] 1. Sensor node: The sensor node is a combination of sensors and ZIGbee nodes. It collects information about the environment, objects, and people through multiple sensors, and synchronizes the data to the ZIGbee node.

[0031] 2. ZIGbee node: A ZIGbee node can be connected to multiple sensors, and different ZIGbee nodes can be connected to each other. The data uploaded by the sensor node can be transmitted from one ZIGbee node to other ZIGbee nodes through ZIGbee communication, thereby realizing data transmission between multiple ZIGbee nodes.

[0032] 3. ZIGbee coordinator: A ZIGbee coordinator and multiple ZIGbee nodes are connected to form a sensor topology network. The ZIGbee coordinator can organize and maintain the sensor network topology network, manage network resources, and process network protocols. The sensor topology network composed of multiple sensors, ZIGbee nodes and ZIGbee coordinator is used to transmit data in the internal network and realize data transmission between multiple nodes. At the same time, sensors communicate through ZIGbee to isolate the vehicle from unsafe networks to prevent malicious attacks.

[0033] 4. ZIGbee gateway: It is used to receive data sent by each sensor node and convert it into a data format that can be recognized by the network. It also sends it to the vehicle module (early warning, assisted driving, etc.) or uploads it to the Internet of Vehicles server. The ZIGbee gateway can achieve internal and external network isolation.

[0034] The vehicle-mounted sensor network system based on ZIGbee technology in this system is based on ZIGbee technology for mesh topology vehicle-mounted sensor networking, which can not only increase the scalable number of vehicle-mounted sensors, but also through wireless networking, no line connection is required. At the same time, the vehicle-mounted sensor networks communicate through ZIGbee, which can isolate the internal and external networks, and isolate the vehicle from unsafe networks to prevent malicious attacks.

[0035] Second Embodiment

[0036] like Figure 3 As shown, this embodiment provides a data transmission method of a vehicle-mounted sensor network based on ZIGbee technology, which is implemented by the vehicle-mounted sensor network system based on ZIGbee technology described in Example 1, and specifically includes the following steps:

[0037] Step S1: Combine the sensor with the ZIGbee node to form a sensor node; when the sensor detects a change in the vehicle state, it will send the corresponding data to other nodes through the ZIGbee node.

[0038] Step S2: connecting the ZIGbee node with the ZIGbee coordinator to form a sensor topology network (internal network), wherein the sensor topology network can realize data transmission between multiple nodes;

[0039] Step S3: The ZIGbee gateway receives the data sent by the sensor topology network (internal network) and converts it into a data format recognizable by the network, thereby achieving isolation between the internal and external networks.

[0040] Step S4: The ZIGbee gateway sends the sensor data to the vehicle module (warning, assisted driving, etc.) or uploads it to the Internet of Vehicles server. (External network) The external system receives the sensor data and performs corresponding processing and control as needed to ensure the safety and normal operation of the vehicle.

[0041] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention.

Claims

1. A vehicle-mounted sensor network system based on ZIGbee technology, characterized in that: Including sensor nodes, ZIGbee nodes, ZIGbee coordinators and ZIGbee gateways, specifically: The sensor node is composed of one or more sensors, which collect external information through the sensors and synchronize the data to the ZIGbee node; The one ZIGbee node can be connected to multiple sensors, and different ZIGbee nodes can be connected to each other, so that the data uploaded by the sensor node is transmitted from one ZIGbee node to other ZIGbee nodes through ZIGbee communication, thereby realizing data transmission between multiple ZIGbee nodes; The one ZIGbee coordinator and multiple ZIGbee nodes are connected to form a sensor topology network, and the sensor topology network composed of multiple sensors, ZIGbee nodes and ZIGbee coordinator is used to transmit data of the internal network to realize data transmission between multiple nodes; The ZIGbee gateway is used to receive data sent by each sensor node transmitted by the ZIGbee coordinator, convert it into a data format recognizable by the network, and give it to the vehicle module for use or upload it to the Internet of Vehicles server.

2. The vehicle-mounted sensor network system based on ZIGbee technology according to claim 1 is characterized in that: The ZIGbee coordinator can organize and maintain the sensor network topology network, manage network resources and process network protocols.

3. The vehicle-mounted sensor network system based on ZIGbee technology according to claim 1 is characterized in that: The vehicle module includes an early warning module and an auxiliary driving module.

4. A data transmission method for a vehicle-mounted sensor network system based on ZIGbee technology, characterized in that: The vehicle-mounted sensor network system based on ZIGbee technology described in any one of claims 1 to 3 is implemented, specifically comprising the following steps: Step S1: Combine the sensor with the ZIGbee node. When the sensor detects a change in the vehicle state, the sensor sends the corresponding data to other nodes through the ZIGbee node. Step S2: connecting the ZIGbee node with the ZIGbee coordinator to form a sensor topology network, wherein the sensor topology network can realize data transmission between multiple nodes; Step S3: The ZIGbee gateway receives the data sent by the sensor topology network and converts it into a data format recognizable by the network; Step S4: The ZIGbee gateway provides the sensor data to the external vehicle module or uploads it to the Internet of Vehicles server; the external vehicle module receives the sensor data and performs corresponding processing and control to ensure the safety and normal operation of the vehicle.

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