CN210120567U - Vehicle-mounted composite gateway and vehicle - Google Patents
Vehicle-mounted composite gateway and vehicle Download PDFInfo
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Abstract
The utility model discloses an on-vehicle compound gateway, include: the data processing module and the interface module; the interface module comprises a plurality of communication interfaces connected with an external circuit; the data processing module comprises: a central control unit and a storage unit; a transceiver unit connected to the in-vehicle communication network for: receiving and converting a protocol of data transmitted by a vehicle-mounted communication network or a communication interface; the data after the protocol conversion is completed is forwarded to a communication interface or a vehicle-mounted communication network; the vehicle-mounted communication network comprises a CAN bus, a LIN bus, a CAN-FD bus and a vehicle-mounted Ethernet; the communication interface includes: CAN interface, CAN-FD interface, LIN interface, 100Base-T1 interface. The utility model discloses communication interface with multiple agreement type has compatible present vehicle probably to load/connect/the network of use basically to realized that data are forwardded at each communication interface, the utility model discloses both increased on-vehicle gateway's adaptation variety, improved communication efficiency again.
Description
Technical Field
The utility model relates to a vehicle network technical field, in particular to on-vehicle compound gateway and have vehicle of many communication interfaces.
Background
At present, when data on a vehicle interacts on each CAN or LIN channel, the data are exchanged and routed by using a vehicle-mounted gateway generally. The vehicle-mounted gateway, as a controller for data forwarding and routing, plays a role of a data center on a vehicle-mounted network, generally has a CAN interface, and CAN isolate external data from a vehicle and also CAN send effective data to external CAN interface equipment through a vehicle diagnosis protocol.
The control of automobile parts is gradually changed from traditional mechanical control into the existing electronic and program control, such as an electronic control fuel injection engine, an automatic transmission, an electronic steering gear, an anti-theft system and the like. This increases the number of control units on the vehicle, which leads to increased wiring harnesses, complex circuitry, high mass, high cost, multiple failures, difficult maintenance, and the like. In addition to considering technical obstacles, cost issues are inevitable because the challenge of a complete vehicle manufacturer is to produce a more stable, comfortable, advanced and affordable vehicle at the lowest cost. The challenge of vehicular networking is that it is both powerful and inexpensive.
The most widely used on-board network technologies today include CAN and LIN networks, but these bus standards are difficult to interface with peripheral devices and network services. Due to the advantages of openness, interconnection expansion and the like of the ethernet, after the ethernet is introduced into an automobile environment, the ethernet is easier to be linked with various devices such as a smart phone, a tablet computer and the like in addition to the original vehicle-mounted device. Meanwhile, the network service can be enjoyed by easily utilizing the mobile communication. The development of automotive electronics will be more intelligent due to the possibility of open environment, such as intelligent sensors, vehicle-mounted entertainment systems, car networking and the like, the linkage with external intelligent equipment, cloud computing and the application of big data, and the establishment of a brand-new automotive electronics platform will become a necessary condition of a new generation of automobiles. With the increase of data volume and the increasing of the requirement for communication aging, the gateway load on the vehicle is larger and larger, which results in serious shortage of communication speed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a vehicle-mounted composite gateway and have vehicle of many interfaces to multiple communication network in the adaptation vehicle, at the communication interface spare forwarding information of different agreements, improved the communication efficiency of vehicle.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an in-vehicle composite gateway, comprising: the data processing module and the interface module;
the interface module comprises a plurality of communication interfaces connected with an external circuit and is used for transmitting data of a corresponding protocol type;
the data processing module comprises:
the central control unit is used for being connected with the transceiver unit;
the storage unit is used for providing temporary codes and storage space for the operation of the central control unit;
the transceiver unit connected to an in-vehicle communication network, for:
receiving and protocol converting the data transmitted by the vehicle-mounted communication network or the communication interface;
the data after the protocol conversion is completed is forwarded to the communication interface or the vehicle-mounted communication network;
the vehicle-mounted communication network comprises a CAN bus, a LIN bus, a CAN-FD bus and a vehicle-mounted Ethernet; the communication interface includes: CAN interface, CAN-FD interface, LIN interface, 100Base-T1 interface.
Further, the transceiver unit comprises, connected to the central control unit respectively:
a CAN-FD transceiver connected with the CAN-FD interface;
a LIN transceiver connected with the LIN interface;
a CAN transceiver connected with the CAN interface;
an Ethernet transceiver interfacing with the 100 Base-T1.
Further, the ethernet transceiver further comprises: an Ethernet switching chip connected with the central control unit; a 100BASE-T1 transceiver connected to the Ethernet switch chip; the 100Base-T1 interface is connected with the 100Base-T1 transceiver.
Further, the CAN transceiver is a TJA1050 transceiver;
the CAN-FD transceiver is a TJA1043T transceiver;
the LIN transceiver is a TJA1021 transceiver;
the Ethernet exchange chip is an SJA1105 chip;
the 100BASE-T1 transceiver is an 88Q1010 transceiver.
Further, the 100Base-T1 interface is a two-wire interface, and is connected with only two communication wires.
Further, the communication interface further comprises:
a four wire system 100Base-Tx interface connected to the Ethernet transceiver.
Further, the communication interface further comprises: a UART interface and a USB High Speed (High Speed USB) interface; the transceiver unit also comprises a UART chip and a USB-to-serial port chip which are connected with the central control unit, wherein the UART interface is connected with the UART chip, and the USB High Speed interface is connected with the USB-to-serial port chip.
Further, the storage unit includes: and the EMMC embedded multimedia card and the EEPROM nonvolatile off-chip memory are respectively connected with the central control unit.
Furthermore, the data processing module is connected with a 12V/24V power supply.
The utility model discloses a vehicle with many communication interface, this vehicle with many interfaces is equipped with as above on-vehicle compound gateway.
The utility model discloses following beneficial effect has at least:
the utility model discloses communication interface with multiple agreement type has compatible present vehicle probably to load/connect/the network of use basically to realized that data are forwardded at each communication interface, the utility model discloses both increased on-vehicle gateway's adaptation variety, improved communication efficiency again.
Compared with the prior art, the vehicle with multiple interfaces has the same advantages as the vehicle-mounted composite gateway, and the description is omitted.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 is a circuit structure connection diagram of the embodiment of the present invention;
fig. 3 is a structural logic diagram disclosed in the embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.
Example one
A vehicular composite gateway, as shown in fig. 1, comprising: the interface module comprises a plurality of communication interfaces connected with an external circuit and is used for transmitting data of a corresponding protocol type.
The data processing module comprises:
a central control unit (MCU) for connection with the transceiver unit;
the storage unit is used for providing temporary codes and storage space for the operation of the central control unit;
the transceiver unit connected to an in-vehicle communication network, for: receiving and protocol converting the data transmitted by the vehicle-mounted communication network or the communication interface; and forwarding the data after the protocol conversion is completed to the communication interface or the vehicle-mounted communication network.
The vehicle-mounted communication network comprises a CAN bus, a LIN bus, a CAN-FD bus and a vehicle-mounted Ethernet; the communication interface includes: CAN interface, CAN-FD interface, LIN interface, 100Base-T1 interface.
The data processing module still even have 1V/24V's power, the gateway also have anti-vibration, characteristics such as anti 35 ~ 7V voltage fluctuation.
Among them, a CAN bus (CAN) refers to a Controller Area Network, and is one of the most widely used field buses in the world. LIN (Local Interconnect Network, Local internet) is a low-cost serial communication Network used to implement distributed electronic system control in automobiles. The aim of LIN is to provide ancillary functions for existing automotive networks (e.g. CAN bus), and the use of LIN bus for communication CAN be very cost effective. CAN-FD (CAN with flexible Data-Rate, also written as CAN FD in some cases) has the following advantages compared to CAN bus: the rate of the arbitration field and the response field can reach 1Mbps at most; the length of the data field is variable, and the maximum data length is 64 bytes; and the bandwidth utilization rate is higher due to the longer data field. 100Base-T1 is an IEEE specification for 100Mb/s automotive Ethernet, which may also be referred to as IEEE802.3bw, both names referring to the same specification. The "-T1" suffix is an important distinction used to denote automotive Ethernet, which is different from the common 100 Base-T.
The utility model discloses can realize the transmission and the retransmission of information between each above-mentioned interface, the on-vehicle communication network. Especially, data based on different communication protocol types cannot be directly forwarded or routed to interfaces of other protocols, so that the data routing is realized, for example, when a vehicle-mounted communication network in a vehicle realizes the data routing, the data of a CAN bus is converted into the data of a LIN bus under the control of a central control unit through a transceiver unit, and the data routing is realized; when the vehicle-mounted communication network inside the vehicle communicates through the communication interface connected with the external circuit, the communication CAN also be realized through the gateway disclosed by the utility model, for example, for the CAN interface connected with the external circuit in the gateway, under the control of the central control unit, the data of the LIN bus CAN be received, converted and sent to the CAN interface by the transceiver unit, and the data forwarding of different protocol types is realized; compared with the prior art, the utility model discloses more outstanding characteristics lie in, CAN realize the retransmission of data between each interface of this gateway, for example, to the data of the CAN interface input of this gateway, through transceiver unit's conversion, become to accord with the data that the LIN agreement CAN transmit, with this data transmission to the LIN interface, realized the retransmission of information. To the extent that a limited number of examples are set forth herein, this disclosure is intended to be limited only by the claims and since those skilled in the art will be fully capable of determining the construction and uses of the invention as described herein, other possible embodiments will not be set forth in any detail herein.
In some embodiments of the present invention, as shown in fig. 2, the transceiver unit includes, connected to the central control unit:
the CAN-FD transceiver is connected with the CAN-FD interface and used for forwarding data to the CAN-FD interface, and preferably adopts a TJA104T transceiver, and the CAN-FD interface CAN support message priority communication with a bandwidth of 5 Mbps;
the LIN transceiver is connected with the LIN interface and used for forwarding data to the LIN interface, the TJA1021 transceiver is adopted in a limited way, and the LIN interface can be externally connected with various sensors and actuators;
the CAN transceiver is connected with the CAN interface and used for forwarding data to the CAN interface, preferably adopts a TJA1050 transceiver, and the traditional CAN interface CAN support data communication of 1 Mbps;
and the Ethernet transceiver is connected with the 100Base-T1 interface and used for forwarding data to the 100Base-T1 interface, and the two-wire system 100Base-T1 interface can support 100Mbps communication and only needs two communication lines.
Preferably, the central control unit includes a control chip, which may be of the MPC5748G type, and its internal circuit and principle are in the prior art and will not be described herein.
Further, the ethernet transceiver further comprises:
(1) the Ethernet switching chip is connected with the central control unit, preferably, the model of the chip adopts SJA1105 which comprises a 100Mbps RJ45 interface and 4 100Mbps vehicle-mounted Ethernet interfaces;
(2) the 100BASE-T1 transceiver is connected with the Ethernet switching chip, and the two-wire system 100BASE-T1 interface is connected with the 100BASE-T1 transceiver.
Preferably, the 100BASE-T1 transceiver is 88Q1010, which is a single twisted pair Ethernet physical layer transceiver (PHY) supporting the 100BASE-T1 Ethernet physical layer standard defined by IEEE802.3 bw. The system is perfectly matched with various automobile applications, and the manufacture of the system adopts a standard digital CMOS process, and realizes the simultaneous data transmission and reception on a single-pair balanced twisted-pair cable through an active circuit. MDI terminal matching resistors are integrated in the 88Q1010, and the reduction of the number of external devices simplifies the layout of the mainboard, thereby reducing the cost of the mainboard. The linear voltage regulator is integrated in the linear voltage regulator, can generate various circuits of voltages required by the linear voltage regulator for working, and can operate only by supplying power to the external part by a 3.3V single power supply. The chip supports 1.8V, 2.5V and 3.3V LVCMOS I/O standards.
The two-wire system 100Base-T1 interface is preferably a two-wire system using twisted pair wires, where the twisted pair wires are composed of two copper wires insulated from each other, and the two wires are twisted together like a screw thread to reduce the degree of signal interference, and the electric wave radiated by each wire during transmission is cancelled by the request sent by the other wire. Twisted-pair cables are widely used due to their abundant resources and low cost.
In some embodiments of the present invention, the communication interface further comprises: the four-wire system 100Base-Tx interface is connected with the Ethernet transceiver, and the specific four-wire system 100Base-Tx interface is connected with a transceiver (realized by the existing TJA series chip) corresponding to 100Base-Tx and further connected with an Ethernet exchange chip in the Ethernet transceiver. The 100Base-Tx interface with the 4-wire system can be connected with a notebook computer or an external switch router and the like.
In some embodiments of the present invention, the communication interface further comprises: a UART interface and a USB HighSpeed interface. The transceiver unit also comprises a UART chip and a USB-to-serial port chip which are connected with the central control unit, wherein the UART interface is connected with the UART chip, and the USB High Speed interface is connected with the USB-to-serial port chip. UART and USB are the interface commonly used in this field, its concrete structure and theory of operation the utility model discloses no longer explain in detail.
In some embodiments of the present invention, the storage unit includes: and the EMMC and the EEPROM are respectively connected with the central control unit. The EMMC (embedded Multi Media card) is a standard specification of an embedded memory established by the MMC association, and integrates a controller in a package to provide a standard interface and manage a flash memory. For an eeprom (electrically Erasable Programmable read only memory) nonvolatile off-chip memory, the above structure can be preferably realized by using a chip of model M95320.
The utility model discloses a some embodiments, central control unit even have the controller unit, both can be integrated connection on the circuit board also can be outside wired connection, the controller unit is the LAN controller that transceiver unit corresponds promptly, for solving in the modern automobile a serial data communication bus that numerous measurement control unit between the data interchange and develop. The controller is further connected with the transceiver unit, in this embodiment, the transceiver in the transceiver unit is connected with the corresponding controller, the CAN transceiver is correspondingly connected with the CAN controller, the LIN transceiver is correspondingly connected with the LIN controller, and the like.
In summary, this embodiment discloses a preferred real-time manner of a vehicle-mounted composite gateway, as shown in fig. 3, the gateway includes an MCU, storage units (EMMC, M95320), a transceiver unit (in fig. 3, an ethernet switch chip SJA1105 is taken as a representative, and other transceivers are not labeled), and a plurality of communication interfaces, and as a gateway in which a controller for data forwarding and routing plays a role in a data hub on a vehicle-mounted network, the gateway generally has a CAN interface, and CAN isolate external data from a vehicle and also CAN send effective data to an external CAN interface device through a vehicle diagnostic protocol. The gateway described herein is a vehicle-mounted gateway suitable for 12V or 24V power supply systems, and has the characteristics of vibration resistance, 35-7V voltage fluctuation resistance and the like.
The gateway is added with a plurality of communication interfaces on the basis of the traditional CAN bus gateway, so that the communication mode is more diversified to adapt to the data flow of the modern information society. Which comprises the following steps:
(1) the 2-wire system 100Base-T1 interface can support 100Mbps communication and only 2 communication wires are needed;
(2) the 100Base-Tx interface with a 4-wire system can be externally connected with a notebook computer or an external switch router and the like;
(3) the CAN-FD interface CAN support message priority communication with 5Mbps bandwidth;
(4) has a USB High Speed interface;
(5) the UART interface is arranged and can be externally connected with various external devices;
(6) the traditional CAN interface CAN support data communication of 1 Mbps;
(7) the LIN interface is provided and can be externally connected with various sensors and actuators.
The gateway has the above 7 interfaces, where CAN and CAN-FD both have 2 such interfaces. By default, data can be transferred between the 9 interfaces described above after the gateway is configured using the configuration tool. Preferably, the configuration can be performed by setting a transmission cycle and a data direction of data.
100BASE-Tx in the 7 types of interfaces, UART is the traditional Ethernet and UART interface, and the data transmission without priority is carried out in the physical layer. Preferably, the gateway can perform corresponding data processing on the data link layer, and can transmit the data after sequencing according to the priority, so that the data related to the safety in the vehicle can be transmitted preferentially.
Example two
The embodiment discloses a vehicle with multiple communication interfaces, and the vehicle is provided with the vehicle-mounted composite gateway disclosed in the first embodiment. The vehicle and the vehicle-mounted composite gateway have the same advantages compared with the prior art, and are not described in detail herein.
The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.
In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.
Claims (10)
1. An in-vehicle composite gateway, comprising: the data processing module and the interface module;
the interface module comprises a plurality of communication interfaces connected with an external circuit and is used for transmitting data of a corresponding protocol type;
the data processing module comprises:
the central control unit is used for being connected with the transceiver unit;
the storage unit is used for providing temporary codes and storage space for the operation of the central control unit;
the transceiver unit connected to an in-vehicle communication network, for:
receiving and protocol converting the data transmitted by the vehicle-mounted communication network or the communication interface;
the data after the protocol conversion is completed is forwarded to the communication interface or the vehicle-mounted communication network;
the vehicle-mounted communication network comprises a CAN bus, a LIN bus, a CAN-FD bus and a vehicle-mounted Ethernet;
the communication interface includes: CAN interface, CAN-FD interface, LIN interface, 100Base-T1 interface.
2. The vehicular composite gateway of claim 1, wherein the transceiver unit comprises, connected to the central control unit:
a CAN-FD transceiver connected with the CAN-FD interface;
a LIN transceiver connected with the LIN interface;
a CAN transceiver connected with the CAN interface;
an Ethernet transceiver interfacing with the 100 Base-T1.
3. The vehicular composite gateway of claim 2, wherein the ethernet transceiver further comprises:
an Ethernet switching chip connected with the central control unit;
a 100BASE-T1 transceiver connected to the Ethernet switch chip;
the 100Base-T1 interface is connected with the 100Base-T1 transceiver.
4. The vehicular composite gateway of claim 3, wherein the CAN transceiver is a TJA1050 transceiver;
the CAN-FD transceiver is a TJA1043T transceiver;
the LIN transceiver is a TJA1021 transceiver;
the Ethernet exchange chip is an SJA1105 chip;
the 100BASE-T1 transceiver is an 88Q1010 transceiver.
5. The vehicular composite gateway of claim 3 or 4, wherein the 100Base-T1 interface is a two-wire interface with two and only two communication lines attached.
6. The in-vehicle composite gateway of claim 5, wherein the communication interface further comprises:
a four wire system 100Base-Tx interface connected to the Ethernet transceiver.
7. The in-vehicle composite gateway of claim 6, wherein the communication interface further comprises: a UART interface and a high-speed USB interface;
the transceiver unit further comprises a UART chip and a USB-to-serial port chip which are connected with the central control unit, wherein the UART interface is connected with the UART chip, and the high-speed USB interface is connected with the USB-to-serial port chip.
8. The in-vehicle composite gateway according to claim 1, wherein the storage unit includes:
and the EMMC embedded multimedia card and the EEPROM nonvolatile off-chip memory are respectively connected with the central control unit.
9. The vehicular composite gateway of claim 1, wherein the data processing module is connected to a 12V/24V power supply.
10. A vehicle provided with an in-vehicle compound gateway according to any one of claims 1 to 9.
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| CN201921331456.0U CN210120567U (en) | 2019-08-15 | 2019-08-15 | Vehicle-mounted composite gateway and vehicle |
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| CN111901215A (en) * | 2020-07-31 | 2020-11-06 | 智车优行科技（北京）有限公司 | Multi-bus hybrid routing method and gateway device |
| CN112187599A (en) * | 2020-09-15 | 2021-01-05 | 郑州信大捷安信息技术股份有限公司 | System and method for supporting data communication between network buses in vehicle |
| CN113364654A (en) * | 2020-03-05 | 2021-09-07 | 北京新能源汽车股份有限公司 | Vehicle-mounted hybrid gateway controller, information processing method and automobile |
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| CN111756861A (en) * | 2020-07-07 | 2020-10-09 | 成都运达科技股份有限公司 | System for realizing internal and external network data exchange based on configuration file |
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| CN114326503A (en) * | 2021-12-28 | 2022-04-12 | 智新科技股份有限公司 | Vehicle-mounted IO gateway controller and communication method |
| CN114740822A (en) * | 2022-03-30 | 2022-07-12 | 潍柴动力股份有限公司 | Communication method and device between electronic control units |
| CN115174705A (en) * | 2022-06-29 | 2022-10-11 | 智己汽车科技有限公司 | Protocol conversion method and device for in-vehicle communication interface and consumer electronics communication interface |
| CN115174705B (en) * | 2022-06-29 | 2023-08-15 | 智己汽车科技有限公司 | Method and equipment for converting protocols of communication interface in vehicle and consumer electronics communication interface |
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