CN217546076U - Network topology structure of combination instrument - Google Patents
Network topology structure of combination instrument Download PDFInfo
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- CN217546076U CN217546076U CN202220769635.8U CN202220769635U CN217546076U CN 217546076 U CN217546076 U CN 217546076U CN 202220769635 U CN202220769635 U CN 202220769635U CN 217546076 U CN217546076 U CN 217546076U
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Abstract
The utility model discloses a combination meter network topology structure belongs to combination meter network topology structure technical field, including combination meter 1 and two key network segment structures, two key network segment structures are connected with combination meter 1 through combination meter 120 omega resistance 2 respectively, first key network segment structure includes 250K baud rate C-CAN bus 3 and first network segment node group, second key network segment structure includes the P-CAN bus 24 and the second network segment node group of 500K baud rate, under the condition that whole car spare part does not increase, through the network topology structure of the key spare part combination meter of whole car of design, reduce the bus load rate, satisfy whole car to bus data high reliability and real-time interaction's demand, thereby improve the security of vehicle operation.
Description
Technical Field
The utility model relates to a combination meter especially relates to a combination meter network topology structure, belongs to combination meter technical field.
Background
At present, a single-network-section 250K communication rate CAN bus is used for most commercial vehicles, and with the continuous improvement of intellectualization, the load of the whole vehicle bus reaches about 50%, the CAN bus is blocked due to an overhigh load rate, the occurrence of the situation of signal transmission failure is high in probability, and the phenomena that the power of the whole vehicle is lost due to the abnormal rotating speed signal of an engine, the fault is mistakenly reported by a combination meter and the like cannot be caused CAN be caused.
A combination meter network topology is designed for this purpose to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a combination meter network topology structure.
The purpose of the utility model can be achieved by adopting the following technical scheme:
a network topology structure of a combination instrument comprises the combination instrument and two key network segment structures, wherein the two key network segment structures are respectively connected with the combination instrument through a 120 omega resistor of the combination instrument, the first key network segment structure comprises a C-CAN bus with a 250K baud rate and a first network segment node group, and the second key network segment structure comprises a P-CAN bus with a 500K baud rate and a second network segment node group.
Preferably, the first network segment node group comprises an electronic control air suspension, a right turn reminder, a first OBD diagnosis interface and a wire harness end 120 omega resistor, and the 250 Kbaud rate C-CAN bus is connected with the electronic control air suspension, the right turn reminder, the first OBD diagnosis interface and the wire harness end 120 omega resistor.
Preferably, the second network segment node group comprises an electronic stability control, an advanced auxiliary driving system, an automatic gearbox, a gear shifting handle, a retarder, an engine, an air conditioner controller, a central device electric board, an intelligent central control, a door and window controller, a gateway and a second OBD diagnosis interface;
the P-CAN bus with the Baud rate of 500K is connected with an electronic stability control, an advanced assistant driving system, an automatic gearbox, a gear shifting handle, a retarder, an engine, an air conditioner controller, a central device electric appliance board, an intelligent central control, a door and window controller, a gateway and a second OBD diagnosis interface.
Preferably, the central device electric board is connected with the left combination switch and the right combination switch.
Preferably, the door and window controller is connected with a door control switch.
Preferably, the gateway is connected with a steering wheel key.
The utility model has the advantages of:
the utility model provides a pair of combination meter network topology structure under the condition that whole car spare part does not increase, through the network topology structure of the whole car key spare part combination meter of design, reduces bus load rate, satisfies whole car to bus data high reliability and real-time interaction's demand to improve the security of vehicle operation.
Drawings
Fig. 1 is a schematic structural diagram of a network topology structure of a combination meter in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of data interaction of two key network segments in a network topology structure of a combination meter in embodiment 2 of the present invention.
In fig. 1: the system comprises a 1-combined instrument, a 2-combined instrument 120 omega resistor, a 3-250 Kbaud rate C _ CAN bus, a 4-wire harness end 120 omega resistor, a 5-first OBD diagnosis interface, a 6-electronic control air suspension, a 7-electronic stability control, an 8-advanced auxiliary driving system, a 9-right turn reminding, a 10-automatic gearbox, a 11-gear shifting handle, a 12-retarder, a 13-engine, a 14-second OBD diagnosis interface, a 15-gateway, a 16-steering wheel key, a 17-door control switch, a 18-door and window controller, a 19-intelligent central control, a 20-right combined switch, a 21-left combined switch, a 22-central device electric board, a 23-air conditioner controller and a 24-500 Kbaud rate P _ CAN bus.
Detailed Description
In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example one
As shown in fig. 1, the network topology structure of the combination instrument provided in this embodiment includes a combination instrument 1 and two key network segment structures, where the two key network segment structures are respectively connected to the combination instrument 1 through a 120 Ω resistor 2 of the combination instrument, the first key network segment structure includes a C-CAN bus 3 with a baud rate of 250K and a first network segment node group, and the second key network segment structure includes a P-CAN bus 24 with a baud rate of 500K and a second network segment node group.
The P-CAN bus 24 with the Baud rate of 500K and the second network segment node group are used for completing information transmission between the P-CAN bus node with the Baud rate of 24-500K and the 1-combination instrument;
the C-CAN bus 3 with the Baud rate of 250K and the first network segment node group are used for completing information transmission between the C-CAN bus node with the Baud rate of 3-250K and the 1-combination instrument;
the information and data on the C _ CAN bus with the Baud rate of 3-250K and the P _ CAN bus with the Baud rate of 24-500K are transmitted through the 1-combination instrument, the node communication speed on the P _ CAN bus with the Baud rate of 24-500K is 500K, compared with the C _ CAN bus with the Baud rate of 3-250K, the load rate is reduced by 50%, and the reliability of signal transmission is ensured.
Under the condition that the number of parts of the whole vehicle is not increased, the bus load rate is reduced by designing a network topology structure of a key part combination instrument of the whole vehicle, and the requirements of the whole vehicle on high reliability and real-time interaction of bus data are met, so that the running safety of the vehicle is improved.
In this embodiment, the first network segment node group includes an electronically controlled air suspension 6, a right turn reminder 9, a first OBD diagnostic interface 5, and a wire harness end 120 Ω resistor 4, and the 250K baud rate C-CAN bus 3 is connected to the electronically controlled air suspension 6, the right turn reminder 9, the first OBD diagnostic interface 5, and the wire harness end 120 Ω resistor 4.
In this embodiment, the second network segment node group includes an electronic stability control 7, an advanced driver assistance system 8, an automatic transmission 10, a shift handle 11, a retarder 12, an engine 13, an air conditioner controller 23, a central device electrical board 22, an intelligent central control 19, a door and window controller 18, a gateway 15, and a second OBD diagnostic interface 14;
the P-CAN bus 24 with the Baud rate of 500K is connected with the electronic stability control 7, the advanced assistant driving system 8, the automatic gearbox 10, the gear shifting handle 11, the retarder 12, the engine 13, the air conditioner controller 23, the central device electric board 22, the intelligent central control 19, the door and window controller 18, the gateway 15 and the second OBD diagnosis interface 14.
In the present embodiment, the center device board 22 connects the left combination switch 21 and the right combination switch 20.
In the present embodiment, the door controller 18 is connected to the door control switch 17.
In the present embodiment, the gateway 15 is connected to the steering wheel key 16.
Example two
The embodiment of the utility model provides an among the combination meter network topology structure that 2 provided, the 3 nodes on the C _ CAN bus of 250K baud rate are used for being connected with the C _ CAN bus 3 of 250K baud rate.
The C _ CAN bus 3 with the baud rate of 250 kbaud is connected with the combination meter 1.
The C _ CAN bus 3 with the Baud rate of 250K is a transmission medium and is mainly used for finishing information transmission between the C _ CAN bus 3 node with the Baud rate of 250K and the combination instrument 1, and the C _ CAN bus 3 with the Baud rate of 250K is a chassis CAN network segment structure.
The C _ CAN bus 3 node with the Baud rate of 250K comprises an electronic control air suspension 6 and a right turning 9 reminding device which are connected with the combination instrument 1 through the C _ CAN bus 3 with the Baud rate of 250K.
The chassis CAN network segment structure comprises CAN network nodes of an electronic air suspension system for adjusting the height of a rear axle of the whole vehicle and a right-turn prompting system.
The P _ CAN bus 24 node with 500 Kbaud rate is used for being connected with the P _ CAN bus 24 with 500 Kbaud rate, and the P _ CAN bus 24 with 500 Kbaud rate is connected with the combination instrument 1.
The P _ CAN bus 24 with the 500K baud rate is a transmission medium and is mainly used for completing information transmission between the P _ CAN bus 24 node with the 500K baud rate and the combination instrument 1.
The P _ CAN bus 24 at 500 kbaud is a power CAN network segment structure.
The P _ CAN bus 24 node with the 500 Kbaud rate comprises an electronic stability control 7, a high-level auxiliary driving system 8, an automatic gearbox 10, a gear shifting handle 11, a retarder 12, an engine 13, a gateway 15, a door and window controller 18, an intelligent central controller 19, a central device electric board 22 and an air conditioner controller 23 which are all connected with the combination instrument 1 through the P _ CAN bus 24 with the 500 Kbaud rate.
The power CAN network segment structure comprises CAN network nodes related to vehicle running, such as a controller for controlling the power of the whole vehicle, a controller for controlling the braking of the whole vehicle, a controller for coordinating the audio-video entertainment of the whole vehicle and the like.
In this embodiment, as shown in fig. 2, signals of nodes between the C _ CAN bus 3 with the 250K baud rate and the P _ CAN bus with the 24-500K baud rate interact through the combination instrument 1, and CAN packet forwarding between the C _ CAN bus 3 node with the 250K baud rate and the P _ CAN bus node is mainly performed.
Above, only the further embodiments of the present invention are shown, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the protection scope of the present invention.
Claims (6)
1. A combination meter network topology structure, its characterized in that: the combined key network segment structure comprises a combined instrument (1) and two key network segment structures, wherein the two key network segment structures are respectively connected with the combined instrument (1) through a 120 omega resistor (2) of the combined instrument, the first key network segment structure comprises a C-CAN bus (3) with a 250K baud rate and a first network segment node group, and the second key network segment structure comprises a P-CAN bus (24) with a 500K baud rate and a second network segment node group.
2. The combination meter network topology of claim 1, wherein: the first network segment node group comprises an electronic control air suspension (6), a right-turn reminder (9), a first OBD diagnosis interface (5) and a wire harness end 120 omega resistor (4), wherein the 250 Kbaud rate C-CAN bus (3) is connected with the electronic control air suspension (6), the right-turn reminder (9), the first OBD diagnosis interface (5) and the wire harness end 120 omega resistor (4).
3. The combination meter network topology of claim 2, wherein: the second network segment node group comprises an electronic stability control (7), an advanced assistant driving system (8), an automatic gearbox (10), a gear shifting handle (11), a retarder (12), an engine (13), an air conditioner controller (23), a central device electric board (22), an intelligent central control (19), a door and window controller (18), a gateway (15) and a second OBD diagnosis interface (14);
the P-CAN bus (24) with the Baud rate of 500K is connected with an electronic stability control (7), an advanced auxiliary driving system (8), an automatic gearbox (10), a gear shifting handle (11), a retarder (12), an engine (13), an air conditioner controller (23), a central device electric appliance board (22), an intelligent central control (19), a door and window controller (18), a gateway (15) and a second OBD diagnosis interface (14).
4. The combination meter network topology of claim 3, wherein: the central device electric board (22) is connected with the left combination switch (21) and the right combination switch (20).
5. The combination meter network topology of claim 4, wherein: the door and window controller (18) is connected with the door control switch (17).
6. The combination meter network topology of claim 5, wherein: the gateway (15) is connected with a steering wheel key (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220769635.8U CN217546076U (en) | 2022-03-31 | 2022-03-31 | Network topology structure of combination instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220769635.8U CN217546076U (en) | 2022-03-31 | 2022-03-31 | Network topology structure of combination instrument |
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| CN217546076U true CN217546076U (en) | 2022-10-04 |
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| CN202220769635.8U Active CN217546076U (en) | 2022-03-31 | 2022-03-31 | Network topology structure of combination instrument |
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