Vehicle network architecture, monitoring method and automobile facilitating data monitoring

Abstract

The application discloses a vehicle network architecture convenient for data monitoring, a monitoring method and an automobile. The vehicle network architecture comprises a gateway controller, a relay, an Ethernet entity node, a first interface and a second interface. The application realizes the connection and disconnection of the gateway controller and the Ethernet entity node by outputting high and low level control of the attraction / disconnection of the relay through the gateway controller; after the gateway controller and the external diagnosis equipment are successfully authenticated and receive the diagnosis control command, the gateway controller is switched from the connection to the disconnection state, the external monitoring equipment accesses the in-vehicle Ethernet network through the interface integrated on the online beam, and then the network data of the gateway controller and the Ethernet entity node is monitored, so that the vehicle beam is avoided from being damaged, the development of the vehicle and the troubleshooting of the after-sales fault are facilitated, and the safety of the vehicle data is ensured.

Description

Technical Field

[0001] This invention belongs to the field of vehicle Ethernet technology, and more specifically, relates to a vehicle network architecture, monitoring method, and automobile that facilitates data monitoring. Background Technology

[0002] With the trends of vehicle intelligence and connectivity, and the continuous development of technologies such as big data and cloud computing, the number of automotive electronic components is increasing year by year, and their complexity is rising. The widespread application of systems such as autonomous driving, ADAS, diagnostics, and infotainment has led to the increasingly widespread use of automotive Ethernet within vehicles. Automotive Ethernet can achieve data transmission rates of 100 Mbit / s or even 1 Gbit / s over a single pair of unshielded twisted-pair cables, while simultaneously meeting the automotive industry's requirements for high reliability, low electromagnetic radiation, low power consumption, bandwidth allocation, low latency, and real-time synchronization. However, because automotive Ethernet connections use a point-to-point connection method, during vehicle development and after-sales stages, technicians need to use wiring to obtain communication data between Ethernet nodes within the vehicle, which damages the vehicle's wiring harness and poses a safety hazard to the entire vehicle.

[0003] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to propose a vehicle network architecture, monitoring method, and vehicle that facilitates data monitoring, enabling the monitoring of data between vehicle Ethernet nodes without damaging the vehicle's wiring harness. This provides convenience for vehicle development and after-sales maintenance while ensuring the security of vehicle data.

[0005] To achieve the above objectives, this invention proposes a vehicle network architecture, monitoring method, and vehicle that facilitates data monitoring.

[0006] According to a first aspect of the present invention, a vehicle network architecture that facilitates data monitoring is proposed, comprising:

[0007] The gateway controller is used to perform security authentication with external diagnostic devices. After successful authentication, it receives diagnostic control commands sent by the external diagnostic devices and then enters Diagnostic mode from Normal mode.

[0008] An Ethernet physical node is used for network data transmission with the gateway controller;

[0009] A relay is used to connect or disconnect the gateway controller from the Ethernet physical node by means of the relay being engaged or disengaged;

[0010] The first interface is used for external data monitoring devices to connect to the gateway controller through the first interface;

[0011] The second interface is used for the external data monitoring device to connect to the Ethernet physical node.

[0012] Optionally, the relay includes:

[0013] First relay and second relay;

[0014] The first relay is electrically connected to the T1+ port of both the gateway controller and the Ethernet physical node.

[0015] The second relay is electrically connected to the T1 port of both the gateway controller and the Ethernet physical node.

[0016] The first relay and the second relay are connected to the LSD port of the gateway controller.

[0017] Optionally, the first interface is electrically connected to the T1+ and T1- ports of the gateway controller, respectively;

[0018] The second interface is electrically connected to the T1+ and T1- ports of the Ethernet physical node, respectively;

[0019] The first interface and the second interface are integrated into the vehicle wiring harness;

[0020] The first and second interfaces are externally protected / sealed.

[0021] Optionally, the LSD port is a low-side drive port;

[0022] In the Normal mode, the gateway controller controls the LSD port to continuously output a low level, so that the first relay and the second relay are in the energized state;

[0023] In the Diagnostic mode, the gateway controller controls the LSD port to continuously output a high level, causing the first relay and the second relay to be in an off state.

[0024] Optionally, the first relay and the second relay are powered by KL30.

[0025] Optionally, the external data monitoring device includes a first connector and a second connector;

[0026] The external data monitoring device is connected to the first interface through the first connector, and then connected to the gateway controller;

[0027] The external data monitoring device is connected to the second interface via the second connector, and then connected to the Ethernet physical node;

[0028] The gateway controller, the external data monitoring device, and the Ethernet physical node are connected in series.

[0029] According to a second aspect of the present invention, a method for monitoring vehicle network data is provided for the vehicle network architecture described in any one of the first aspects, comprising:

[0030] When it is necessary to collect network data between the gateway controller and the Ethernet physical node, the external diagnostic device performs security authentication with the gateway controller. After successful authentication, the gateway controller receives the diagnostic control command sent by the external diagnostic device and then enters the Diagnostic mode from the Normal mode.

[0031] In Normal mode, the relay is in the closed state, and the gateway controller and the Ethernet physical node are directly connected to achieve point-to-point data transmission.

[0032] In Diagnostic mode, the gateway controller controls the relay to disconnect, and the external data monitoring device is electrically connected to the gateway controller through a first interface and electrically connected to the Ethernet physical node through a second interface, thereby monitoring the network data between the gateway controller and the Ethernet physical node.

[0033] Optionally, in the Normal mode, the gateway controller keeps the relay in an engaged state by continuously outputting a low level.

[0034] In the Diagnostic mode, the gateway controller keeps the relay in the off state by continuously outputting a high level.

[0035] Optionally, the gateway controller switches from the Diagnostic mode to the Normal mode when the diagnostic control command ends, the diagnostic session times out, or the security authentication is invalid.

[0036] According to a third aspect of the invention, an automobile is provided, the automobile comprising the vehicle network architecture for data monitoring as described in any one of the first aspects.

[0037] The beneficial effects of this invention are as follows: After receiving a diagnostic command, the gateway controller controls the activation / deactivation of the relay by outputting high and low levels, thereby realizing the connection and disconnection between the gateway controller and the Ethernet physical node; in the disconnected state, the external monitoring device connects to the in-vehicle Ethernet network through the interface integrated on the wiring harness, thereby monitoring network data, avoiding damage to the vehicle wiring harness, and providing convenience for vehicle development and after-sales fault diagnosis; the external diagnostic device needs to undergo security authentication with the gateway controller, and only after successful authentication can it issue diagnostic control commands, ensuring the safety of the entire vehicle; the integrated interface of the vehicle wiring harness is equipped with a protective or sealing device to prevent the exposed interface state of the vehicle connectors from affecting the performance of the vehicle wiring harness; the diagnostic control mode exits when conditions are not met, ensuring the safety of the entire vehicle.

[0038] This invention enables the acquisition of data between in-vehicle Ethernet nodes without damaging the vehicle wiring harness, providing convenience for vehicle development and after-sales maintenance, while ensuring the security of vehicle data. This invention is not limited to network data monitoring between gateway controllers and Ethernet physical nodes, but is also applicable to network data monitoring between different Ethernet physical nodes.

[0039] The system of the present invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0040] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0041] Figure 1 A schematic diagram of a vehicle network architecture that facilitates data monitoring according to the present invention is shown.

[0042] Figure 2 A schematic diagram of a vehicle network architecture that facilitates data monitoring according to Embodiment 1 of the present invention is shown. Detailed Implementation

[0043] The invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] like Figure 1As shown, a vehicle network architecture for convenient data monitoring according to the present invention includes:

[0045] The gateway controller is used to perform security authentication with external diagnostic devices. After successful authentication, it receives diagnostic control commands sent by the external diagnostic devices and then enters Diagnostic mode from Normal mode.

[0046] Ethernet physical nodes are used for network data transmission with the gateway controller;

[0047] Relays are used to connect or disconnect the gateway controller from the Ethernet physical node by turning the relay on or off.

[0048] The first interface is used for external data monitoring devices to connect to the gateway controller.

[0049] The second interface is used for external data monitoring devices to connect to Ethernet physical nodes.

[0050] In one example, the relay includes:

[0051] First relay and second relay;

[0052] The first relay is electrically connected to the T1+ port of both the gateway controller and the Ethernet physical node.

[0053] The second relay is electrically connected to the T1 port of both the gateway controller and the Ethernet physical node;

[0054] The first and second relays are connected to the LSD port of the gateway controller.

[0055] In one example, the first interface is electrically connected to the T1+ and T1- ports of the gateway controller, respectively;

[0056] The second interface is electrically connected to the T1+ and T1- ports of the Ethernet physical node, respectively;

[0057] The first and second interfaces are integrated into the vehicle wiring harness;

[0058] External interface protectors for the first and second interfaces.

[0059] In one example, the LSD port is the low-side drive port;

[0060] In Normal mode, the gateway controller controls the LSD port to continuously output a low level, so that the first and second relays are in the energized state.

[0061] In Diagnostic mode, the gateway controller controls the LSD port to continuously output a high level, keeping the first and second relays in the off state.

[0062] In one example, the first and second relays are powered via KL30.

[0063] In one example, the external data monitoring device includes a first connector and a second connector;

[0064] The external data monitoring device connects to the first interface via the first connector, and then connects to the gateway controller;

[0065] The external data monitoring device connects to the second interface via the second connector, and then connects to the Ethernet physical node;

[0066] The gateway controller, external data monitoring equipment, and Ethernet physical nodes are connected in series.

[0067] Specifically, the vehicle network architecture that facilitates data monitoring includes: a gateway controller, an Ethernet physical node, a relay, a first interface, and a second interface;

[0068] The relay includes a first relay and a second relay. The first relay and the second relay are powered by KL30, which is the positive power source of the battery. That is, the first relay and the second relay are powered by the battery.

[0069] The gateway controller's T1+ port is connected to the Ethernet physical node's T1+ port via a first relay, the gateway controller's T1- port is connected to the Ethernet physical node's T1- port via a second relay, and the gateway controller's LSD port is connected to both the first and second relays.

[0070] The first interface is connected to the T1+ port and T1- port of the gateway controller respectively, and the second interface is connected to the T1+ port and T1- port of the Ethernet physical node respectively. The first and second interfaces are integrated on the vehicle wiring harness. To prevent the first and second interfaces from being exposed, an external interface protection / sealing device is required.

[0071] The external diagnostic device performs security authentication with the gateway controller. After successful authentication, the gateway controller receives the diagnostic control command sent by the external diagnostic device and then enters the Diagnostic mode from the Normal mode.

[0072] In Normal mode, the gateway controller controls the LSD port to continuously output a low level, which keeps the first and second relays in the energized state. At this time, the gateway controller is directly connected to the Ethernet physical node.

[0073] In Diagnostic mode, the gateway controller controls the LSD port to continuously output a high level, causing the first and second relays to be in the off state. At this time, the gateway controller is disconnected from the Ethernet physical node, and the first connector of the external data monitoring device is connected to the first interface, and the second connector is connected to the second interface. At this time, the gateway controller, the external data monitoring device, and the Ethernet physical node are connected in series, so that the external data monitoring device can monitor the network data between the gateway controller and the Ethernet physical node in real time.

[0074] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0075] Example 1

[0076] like Figure 2 As shown, this embodiment provides a vehicle network architecture that facilitates data monitoring, including: a gateway controller, relay Relay1, relay Relay2, an Ethernet physical node, interface A1, and interface B1;

[0077] The gateway controller is used to perform security authentication with external diagnostic devices. After successful authentication, it receives diagnostic control commands sent by the external diagnostic devices and then enters Diagnostic mode from Normal mode.

[0078] Ethernet physical nodes are used for network data transmission with the gateway controller;

[0079] Relay1 and Relay2 are used to connect or disconnect the gateway controller from the Ethernet physical node by engaging or disengaging relays Relay1 and Relay2.

[0080] Interface A1 is used for external data monitoring devices to connect to the gateway controller via interface A1;

[0081] Interface B1 is used for external data monitoring devices to connect to Ethernet physical nodes via interface B1;

[0082] The T1+ port of the gateway controller is electrically connected to the T1+ port of the Ethernet physical node via relay Relay1;

[0083] The T1 port of the gateway controller is electrically connected to the T1 port of the Ethernet physical node via relay Relay2;

[0084] The gateway controller's LSD port is electrically connected to relays Relay1 and Relay2, respectively;

[0085] Power is supplied to relays Relay1 and Relay2 via KL30;

[0086] When it is necessary to monitor the network data between the gateway controller and the Ethernet physical node, the external diagnostic device is electrically connected to the TX+, TX-, RX+, and RX- of the gateway controller. The interface A2 of the external data monitoring device is connected to the interface A1, and the interface B2 of the external data monitoring device is connected to the interface B1. At this time, the gateway controller, the external data monitoring device, and the Ethernet physical node are connected in series, so that the external data monitoring device can monitor the network data between the gateway controller and the Ethernet physical node in real time.

[0087] Example 2

[0088] This embodiment provides a method for monitoring vehicle network data, used in any of the vehicle network architectures described in Embodiment 1, including:

[0089] When it is necessary to monitor network data between the gateway controller and Ethernet physical nodes, the external diagnostic device performs security authentication with the gateway controller. After successful authentication, the gateway controller receives diagnostic control commands sent by the external diagnostic device and then enters Diagnostic mode from Normal mode.

[0090] In Normal mode, the gateway controller's LSD port continuously outputs a low level, causing both Relay1 and Relay2 to be in the closed state. At this time, the gateway controller is directly connected to the Ethernet physical node to realize point-to-point data transmission.

[0091] In Diagnostic mode, the gateway controller's LSD port continuously outputs a high level, causing both relays Relay1 and Relay2 to be in the off state. The interface A2 of the external data monitoring device is connected to the interface A1, and the interface B2 of the external data monitoring device is connected to the interface B1. At this time, the gateway controller, the external data monitoring device, and the Ethernet physical node are connected in series, thereby enabling the monitoring of network data between the gateway controller and the Ethernet physical node through the external data monitoring device.

[0092] When the gateway controller finishes the diagnostic control command, the diagnostic session times out, or the security authentication is invalid, it switches from the Diagnostic mode to the Normal mode.

[0093] Example 3

[0094] This embodiment provides a vehicle that includes the vehicle network architecture for easy data monitoring as described in any one of Embodiment 1.

[0095] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A vehicle network architecture that facilitates data monitoring, characterized in that, include: The gateway controller is used to perform security authentication with external diagnostic devices. After successful authentication, it receives diagnostic control commands sent by the external diagnostic devices and then enters Diagnostic mode from Normal mode. An Ethernet physical node is used for network data transmission with the gateway controller; A relay is used to connect or disconnect the gateway controller from the Ethernet physical node by means of the relay being engaged or disengaged; The first interface is used for external data monitoring devices to connect to the gateway controller through the first interface; The second interface is used for the external data monitoring device to connect to the Ethernet physical node through the second interface; The relay includes: First relay and second relay; The first relay is electrically connected to the T1+ port of both the gateway controller and the Ethernet physical node. The second relay is electrically connected to the T1 port of both the gateway controller and the Ethernet physical node. The first relay and the second relay are connected to the LSD port of the gateway controller; The LSD port is a low-side driver port; In the Normal mode, the gateway controller controls the LSD port to continuously output a low level, so that the first relay and the second relay are in the energized state; In the Diagnostic mode, the gateway controller controls the LSD port to continuously output a high level, so that the first relay and the second relay are in the off state; The external data monitoring device includes a first connector and a second connector; The external data monitoring device is connected to the first interface through the first connector, and then connected to the gateway controller; The external data monitoring device is connected to the second interface via the second connector, and then connected to the Ethernet physical node; The gateway controller, the external data monitoring device, and the Ethernet physical node are connected in series.

2. The vehicle network architecture for easy data monitoring according to claim 1, characterized in that, The first interface is electrically connected to the T1+ and T1- ports of the gateway controller, respectively; The second interface is electrically connected to the T1+ and T1- ports of the Ethernet physical node, respectively; The first interface and the second interface are integrated into the vehicle wiring harness; The first and second interfaces are equipped with external interface protection / sealing devices.

3. The vehicle network architecture for easy data monitoring according to claim 1, characterized in that, The first and second relays are powered by KL30.

4. A method for monitoring vehicle network data, used in the vehicle network architecture described in any one of claims 1-3, characterized in that, include: When it is necessary to monitor network data between the gateway controller and the Ethernet physical node, the external diagnostic device performs security authentication with the gateway controller. After successful authentication, the gateway controller receives the diagnostic control command sent by the external diagnostic device and then enters the Diagnostic mode from the Normal mode. In Normal mode, the relay is in the closed state, and the gateway controller and the Ethernet physical node are directly connected to achieve point-to-point data transmission. In Diagnostic mode, the gateway controller controls the relay to disconnect, and the external data monitoring device is electrically connected to the gateway controller through a first interface and electrically connected to the Ethernet physical node through a second interface, thereby monitoring the network data between the gateway controller and the Ethernet physical node.

5. The method for monitoring vehicle network data according to claim 4, characterized in that, In the Normal mode, the gateway controller keeps the relay in an engaged state by continuously outputting a low level. In the Diagnostic mode, the gateway controller keeps the relay in the off state by continuously outputting a high level.

6. The method for monitoring vehicle network data according to claim 5, characterized in that, The gateway controller switches from the Diagnostic mode to the Normal mode when the diagnostic control command ends, the diagnostic session times out, or the security authentication is invalid.

7. A car, characterized in that, The vehicle includes the vehicle network architecture for easy data monitoring as described in any one of claims 1-3.

Images