CN114785638A - Vehicle-mounted edge gateway - Google Patents
Vehicle-mounted edge gateway Download PDFInfo
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- CN114785638A CN114785638A CN202210344768.5A CN202210344768A CN114785638A CN 114785638 A CN114785638 A CN 114785638A CN 202210344768 A CN202210344768 A CN 202210344768A CN 114785638 A CN114785638 A CN 114785638A
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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Abstract
The invention relates to a vehicle-mounted edge gateway, and belongs to the technical field of vehicle-mounted networks. The method comprises the following steps that a main processor framework based on an MCU + an MPU is adopted, the MCU is a high-safety processor comprising a lock-step ARM core, and the MPU is a high-performance processor supporting a multi-port gigabit network; the vehicle-mounted edge gateway is connected with the central computing platform through at least two paths of Ethernet and communicates through a DDS protocol; the vehicle-mounted edge gateway also comprises two independent power supply interfaces, an intelligent power distribution unit, an expansion IO module interface, a high-precision clock and a synchronous client node; the two independent power supply interfaces are connected to the intelligent power supply management unit; the intelligent power management unit supplies power to the intelligent power distribution unit; the expansion IO module interface is used for connecting different types of expansion IO modules into the vehicle-mounted edge gateway; the high-precision clock is used to provide a high-precision clock distribution service to the ECU. According to the invention, the normal operation of the vehicle under the condition of single-path power supply failure is realized through the intelligent power distribution unit, a central gateway is replaced, and the length and the complexity of a vehicle body wire harness are greatly reduced.
Description
Technical Field
The invention relates to a vehicle-mounted edge gateway, and belongs to the technical field of vehicle-mounted networks.
Background
With the development of electronic and electric architectures of passenger vehicles and the development of centralization of vehicle-mounted computing units, vehicle networks are in the process of transforming from traditional CAN networks to ethernet networks, and along with the application of SOA (service-oriented architecture) on motor vehicles, the electronic and electric architectures of vehicles and vehicle-mounted communication are undergoing serial changes. Tesla equal-class vehicle enterprises have adopted a mode of dividing the new vehicle model into a plurality of domains to organize a vehicle network architecture, so that ECU nodes are reduced, and vehicle wiring harnesses and complexity are reduced. The next generation of vehicle body electronic appliance framework uses a central computing platform as the brain of the vehicle body, and in cooperation with the central computing platform, various sensors and actuators are directly connected to the central computing platform, and the central computing platform is controlled based on an SOA (service oriented architecture). Due to the fact that network architectures of vehicles are different, structures of vehicle-mounted networks are complex and the like, the existing vehicle-mounted network wiring harness is large in length, and the redundant backup requirement of the network is difficult to support.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the vehicle-mounted edge gateway can effectively solve the problems of length and complexity of a current vehicle body wire harness, replaces the existing central gateway, and has an intelligent power distribution function, so that a vehicle body network structure can be more suitable for an SOA (service oriented architecture) taking a central computing platform as a center.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a vehicle-mounted edge gateway is based on a main processor framework of an MCU + an MPU, wherein the MCU is a high-safety processor comprising a lock-step ARM core, and the MPU is a high-performance processor supporting a multi-port gigabit network; the vehicle-mounted edge gateway is connected with the central computing platform through at least two paths of 1000M Ethernet networks and communicates through a DDS protocol, and the two paths of Ethernet networks are redundant backup with each other;
the vehicle-mounted edge gateway also comprises two independent power supply interfaces, an intelligent power distribution unit, an expansion IO module interface, a high-precision clock and a synchronous client node; the two independent power supply interfaces are connected to the intelligent power supply management unit; the intelligent power management unit supplies power to the intelligent power distribution unit, and the intelligent power distribution unit supplies power to each sensor, actuator and ECU (electronic control unit) which are connected with the vehicle-mounted edge gateway through the vehicle body interface and distributes the sensors and the executed power supply;
the expansion IO module interface is used for accessing different types of expansion IO modules into the vehicle-mounted edge gateway, and the interface type of the expansion IO module interface is one or more of CAN, Ethernet, spi bus, i2c bus or PCI-E bus;
the high-precision clock is used for providing high-precision clock issuing service for the ECU, and calibrating the clock by the high-precision time information acquired by the synchronous client node.
The improvement of the technical scheme is as follows: the MCU and the MPU are connected through an Ethernet, a spi bus, an i2c bus or a PCI-E bus, the MCU and the MPU are communicated through a DDS protocol, the CAN interface is connected to the MCU, and the MCU comprises a CAN-DDS bidirectional conversion module and is used for bidirectionally forwarding messages on the corresponding bus.
The improvement of the technical scheme is as follows: the vehicle-mounted edge gateway is provided with a memory interface used for accessing a large-capacity memory, and the large-capacity memory is used for storing network data.
The beneficial effects of the invention are: the intelligent power management unit and the intelligent power distribution unit realize normal operation of the vehicle under the condition of single-path power supply failure, and simultaneously carry out isolated intelligent management on the power supply of the sensor and the actuator; the high-precision clock, the high-precision time synchronization client and the high-precision time synchronization server are used for carrying out time synchronization with the child node and the father node in a layering mode, the real-time automatic driving method is suitable for the real-time high-level automatic driving function of the vehicle, and the safety and redundancy requirements are met. Therefore, the existing central gateway is replaced, and the length and the complexity of the wiring harness of the automobile body are greatly reduced.
Drawings
Fig. 1 is a hardware schematic diagram of a vehicle edge gateway according to an embodiment of the present invention.
Fig. 2 is an intelligent power distribution intention of an on-board edge gateway according to an embodiment of the present invention.
Fig. 3 is a schematic body architecture diagram of a vehicle-mounted edge gateway according to an embodiment of the present invention.
Reference numerals: the intelligent power distribution system comprises a vehicle-mounted edge gateway-1, an MPU-2, an MCU-3, a vehicle body interface-4, an intelligent power management unit-5, an Ethernet port-6, a memory interface-7, a central computing platform-8 and an intelligent power distribution unit-9.
Detailed Description
Example one
In the embodiment, as shown in fig. 1, the vehicle-mounted edge gateway has a plurality of external interfaces, including multiple paths of CAN, LIN, Flexray, serial ports, I/O, and 100/1000M ethernet ports; the sensor and the execution unit of the vehicle are connected with the vehicle-mounted edge gateway through CAN, LIN, serial ports and 100/1000M Ethernet ports, and are connected into a vehicle system through a vehicle body interface.
The vehicle-mounted edge gateway is based on a main processor framework of an MCU (microprogrammed control Unit) and an MPU (micro processing Unit), the MCU is a high-safety processor comprising a lock step ARM (advanced RISC machine) core, and the MPU is a high-performance processor supporting a multi-gigabit network; the vehicle-mounted edge gateway is connected with the central computing platform through at least two paths of 1000M Ethernet networks and communicates through a DDS protocol, and the two paths of Ethernet networks are redundant backup with each other;
the vehicle-mounted edge gateway further comprises two independent power supply interfaces, an intelligent power distribution unit, an expansion IO module interface, a high-precision clock and a synchronous client node.
As shown in fig. 2, two independent power supply interfaces are connected to the intelligent power management unit, are redundant to each other, and support seamless switching to another power supply when a single power supply fails; the intelligent power management unit supplies power to the intelligent power distribution unit, and the intelligent power distribution unit supplies power to each sensor, actuator and ECU which are connected with the vehicle-mounted edge gateway through a vehicle body interface and distributes the sensors and the executed power supply. When the sensor, the actuator or the ECU has electrical faults (short circuit, abnormal electricity utilization and the like), the sensor, the actuator or the ECU can be isolated, the state of the sensor, the actuator or the ECU is sent to the MCU or the MPU, and the power supply of the sensor, the actuator or the ECU is tried to be recovered after a preset time interval without influencing the power supply of other sensors, actuators and the ECU. When the vehicle-mounted edge gateway receives a sleep instruction of the vehicle body, the vehicle-mounted edge gateway controls the vehicle-mounted edge gateway to enter the sleep state and simultaneously cuts off the power supply of the sensor, the actuator and the ECU.
The expansion IO module interface is used for connecting different types of expansion IO modules into the vehicle-mounted edge gateway, and the interface type of the expansion IO module interface is one or more of CAN, Ethernet, spi bus, i2c bus or PCI-E bus. The expansion IO module is communicated with the MCU and/or the MPU through a DDS protocol, is provided with a plurality of IO interfaces or hardware driving units, and comprises a motor controller, a light controller, an analog input interface, a digital input interface, an analog output interface, a digital output interface, a PWM output interface and the like.
The high-precision clock is used to provide high-precision clock distribution services to the ECU and to calibrate its own clock by synchronizing the client nodes' high-precision time information (based on the master gateway or central computer).
The MCU and the MPU are connected through an Ethernet, a spi bus, an i2c bus or a PCI-E bus, the MCU and the MPU are communicated through a DDS protocol, a CAN (Controller Area Network) interface is connected to the MCU, and the MCU comprises a CAN-DDS bidirectional conversion module for bidirectionally forwarding messages on the corresponding bus.
The vehicle-mounted edge gateway is provided with a memory interface (the interface adopts M.2 or Mini-PCIe) for accessing a mass memory, and the mass memory is used for storing network data.
When the vehicle-mounted edge gateway is deployed in a vehicle, a plurality of edge gateways can be arranged to different positions of the vehicle according to the distribution of electronic components in the vehicle, as shown in fig. 3, the edge gateways are distributed on a vehicle head, a vehicle body on the left side, a vehicle body on the right side, a vehicle tail or other positions where needed, other electronic components are connected to the edge gateways nearby, and the edge gateways are connected to a central computing platform through a multi-path 1000M Ethernet, so that the connection between the central computing platform and other sensors and actuators on the vehicle body is simplified, the purpose of reducing the length and complexity of a vehicle body wire harness is achieved, the manufacturing and production cost is reduced, and the automation of a production line is facilitated.
Claims (3)
1. The utility model provides a vehicle-mounted edge gateway, based on MCU + MPU's main processor framework which characterized in that: the MCU is a high-safety processor comprising a lockstep ARM core, and the MPU is a high-performance processor supporting a multi-port gigabit network; the vehicle-mounted edge gateway is connected with the central computing platform through at least two paths of 1000M Ethernet networks and communicates through a DDS protocol, and the two paths of Ethernet networks are redundant backup with each other;
the vehicle-mounted edge gateway also comprises two independent power supply interfaces, an intelligent power distribution unit, an expansion IO module interface, a high-precision clock and a synchronous client node; the two independent power supply interfaces are connected to the intelligent power supply management unit; the intelligent power management unit supplies power to the intelligent power distribution unit, and the intelligent power distribution unit supplies power to each sensor, actuator and ECU (electronic control unit) which are connected with the vehicle-mounted edge gateway through the vehicle body interface and distributes the sensors and the executed power supply;
the expansion IO module interface is used for accessing different types of expansion IO modules into the vehicle-mounted edge gateway, and the interface type of the expansion IO module interface is one or more of CAN, Ethernet, spi bus, i2c bus or PCI-E bus;
the high-precision clock is used for providing high-precision clock issuing service for the ECU, and calibrating the clock by the high-precision time information acquired by the synchronous client node.
2. The in-vehicle edge gateway of claim 1, wherein: the MCU and the MPU are connected through an Ethernet, a spi bus, an i2c bus or a PCI-E bus, the MCU and the MPU are communicated through a DDS protocol, a CAN (Controller Area Network) interface is connected to the MCU, and the MCU comprises a CAN-DDS bidirectional conversion module for bidirectionally forwarding messages on the corresponding bus.
3. The on-board edge gateway of claim 1, wherein: the vehicle-mounted edge gateway is provided with a memory interface used for accessing a large-capacity memory, and the large-capacity memory is used for storing network data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210344768.5A CN114785638A (en) | 2022-03-31 | 2022-03-31 | Vehicle-mounted edge gateway |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210344768.5A CN114785638A (en) | 2022-03-31 | 2022-03-31 | Vehicle-mounted edge gateway |
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| CN114785638A true CN114785638A (en) | 2022-07-22 |
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| CN202210344768.5A Pending CN114785638A (en) | 2022-03-31 | 2022-03-31 | Vehicle-mounted edge gateway |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170072876A1 (en) * | 2015-09-14 | 2017-03-16 | Broadcom Corporation | Hardware-Accelerated Protocol Conversion in an Automotive Gateway Controller |
| CN210377101U (en) * | 2019-09-23 | 2020-04-21 | 苏州科美澄汽车科技有限公司 | Vehicle-mounted gateway controller |
| CN113422665A (en) * | 2021-08-23 | 2021-09-21 | 奥特酷智能科技(南京)有限公司 | Method and system for realizing time synchronization of vehicle-mounted system based on IPC mechanism |
-
2022
- 2022-03-31 CN CN202210344768.5A patent/CN114785638A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170072876A1 (en) * | 2015-09-14 | 2017-03-16 | Broadcom Corporation | Hardware-Accelerated Protocol Conversion in an Automotive Gateway Controller |
| CN210377101U (en) * | 2019-09-23 | 2020-04-21 | 苏州科美澄汽车科技有限公司 | Vehicle-mounted gateway controller |
| CN113422665A (en) * | 2021-08-23 | 2021-09-21 | 奥特酷智能科技(南京)有限公司 | Method and system for realizing time synchronization of vehicle-mounted system based on IPC mechanism |
Non-Patent Citations (1)
| Title |
|---|
| "ST推出面向汽车网关及域控制器应用的智能网关平台", 《单片机与嵌入式系统应用》 * |
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Address after: 210012 room 401-404, building 5, chuqiaocheng, No. 57, Andemen street, Yuhuatai District, Nanjing, Jiangsu Province Applicant after: AUTOCORE INTELLIGENT TECHNOLOGY (NANJING) Co.,Ltd. Address before: 211800 building 12-289, 29 buyue Road, Qiaolin street, Pukou District, Nanjing City, Jiangsu Province Applicant before: AUTOCORE INTELLIGENT TECHNOLOGY (NANJING) Co.,Ltd. |
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