CN217406558U

CN217406558U - CAN network topology structure with separated intelligent driving chassis bus

Info

Publication number: CN217406558U
Application number: CN202220932723.5U
Authority: CN
Inventors: 温江; 田斌; 武向阳; 倪学杰; 卢耀超; 邵伟刚; 刘鹏飞; 陈鹏
Original assignee: Weichai Yangzhou Special Vehicle Co Ltd
Current assignee: Weichai Yangzhou Special Vehicle Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-09-09
Anticipated expiration: 2032-04-20

Abstract

The utility model belongs to the technical field of the communication is driven to intelligence, a CAN network topology structure of chassis bus separation is driven to intelligence is provided, including first CAN network and second CAN network, first CAN network is used for chassis drive-by-wire control, and the second CAN network is used for chassis drive control, realizes the data interaction through domain controller PDC between first CAN network and the second CAN network, and domain controller PDC connects respectively on first CAN network and second CAN network. The utility model provides a pair of CAN network topology structure of intelligence driving chassis bus separation separates chassis drive-by-wire part and chassis drive part and even goes into two different CAN networks, has reduced CAN bus load rate and has improved vehicle system's stability, makes the interactive stability of data obtain the guarantee.

Description

CAN network topology structure with separated intelligent driving chassis bus

Technical Field

The utility model relates to a communication technology field is driven to intelligence, concretely relates to CAN network topology structure of chassis bus separation is driven to intelligence.

Background

The intelligent driving mine card chassis generally consists of two parts, namely a chassis line control module part and a chassis driving part. The chassis drive-by-wire module part comprises a vehicle body control system (BCM), a chassis domain controller (PDC), an electronic steering controller (EPS), an electronic parking system (EPB), an Electronic Braking System (EBS) and the like, and the chassis drive part comprises a Vehicle Control Unit (VCU), a Battery Management System (BMS), a battery Thermal Management System (TMS), a Motor Controller (MCU), a motor thermal management system (ATS), an oil pump controller (EPS), an air pump controller, a DCDC controller, an Instrument (IC) and the like. The modules are communicated in a CAN bus mode, a wire control part accounts for about 30% of the load rate of the bus, a driving part accounts for about 30% of the load rate of the bus, and the sum of the load rate of the wire control part and the driving part is as high as more than 60%. Therefore, a CAN bus connection mode capable of effectively reducing the bus load rate is urgently needed.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a CAN network topology structure of chassis bus separation is driven to intelligence to solve the high problem of current intelligent driving ore deposit card chassis bus load factor.

The utility model provides a pair of CAN network topology structure of intelligence driving chassis bus separation, including first CAN network and second CAN network, first CAN network is used for chassis drive-by-wire control, the second CAN network is used for chassis drive control, first CAN network with realize the data interaction through domain controller PDC between the second CAN network, domain controller PDC connect respectively in first CAN network with on the second CAN network.

According to the above technical scheme, the utility model provides a pair of CAN network topology structure of intelligence driving chassis bus separation separates chassis drive-by-wire part and chassis drive part and even goes into two different CAN networks, has reduced CAN bus load rate and has improved vehicle system's stability, makes the interactive stability of data obtain the guarantee.

Optionally, the first CAN network includes a first CAN bus, and further includes a vehicle body control module BCM, an electronic steering controller EPS, an electronic parking system EPB, and an electronic braking system EBS, and the vehicle body control module BCM, the electronic steering controller EPS, the electronic parking system EPB, and the electronic braking system EBS are all connected to the first CAN bus.

Optionally, the second CAN network includes a second CAN bus, and further includes a battery management system BMS, a battery thermal management system TMS, a motor thermal management system ATS, an air pump controller, a DCDC controller, and a combination meter, where the battery management system BMS, the battery thermal management system TMS, the motor thermal management system ATS, the air pump controller, the DCDC controller, and the combination meter are all connected to the second CAN bus.

Optionally, still include the third CAN network, the third CAN network is used for intelligent driving control, the third CAN network includes the third CAN bus, the third CAN bus also with domain controller PDC is connected, the third CAN network still includes industrial computer, combination navigation, CAN data record appearance and perception system, the industrial computer the combination navigation the CAN data record appearance with perception system all connect in on the third CAN bus.

According to the technical scheme, the nodes for controlling intelligent driving are distinguished from other CAN network nodes, so that the accuracy of data transmission of the nodes related to intelligent driving is guaranteed, and the reliability of the intelligent driving process is guaranteed.

Optionally, the controller further comprises a fourth CAN network for controlling the motor, wherein the fourth CAN network comprises a fourth CAN bus, a master drive all-in-one unit, a motor VCU, a data acquisition instrument and an MCU, and the master drive all-in-one unit, the motor VCU, the data acquisition instrument and the MCU are connected to the fourth CAN bus.

According to the technical scheme, the nodes for controlling the motor drive are distinguished from other CAN network nodes, so that the reliability of data transmission of the motor drive related nodes is improved, and the load rate of a CAN bus is reduced.

By adopting the technical scheme, the method has the following technical effects:

the utility model provides a pair of CAN network topology structure of intelligence driving chassis bus separation separates chassis drive-by-wire part and chassis drive part and even goes into two different CAN networks, has reduced CAN bus load rate and has improved vehicle system's stability, makes the interactive stability of data obtain the guarantee.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is the embodiment of the utility model provides a CAN network topology's of intelligent driving chassis bus separation schematic diagram.

Reference numerals:

1-a first CAN network; 2-a second CAN network; 3-a third CAN network; 4-fourth CAN network.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 is a schematic diagram of a CAN network topology structure with separated intelligent driving chassis buses according to an embodiment of the present invention; as shown in fig. 1, the CAN network topology structure with separated intelligent driving chassis bus provided in this embodiment includes a first CAN network 1 and a second CAN network 2, the first CAN network 1 is used for chassis drive-by-wire control, the second CAN network 2 is used for chassis drive control, data interaction is realized between the first CAN network 1 and the second CAN network 2 through a domain controller PDC, and the domain controller PDC is respectively connected to the first CAN network and the second CAN network.

According to the CAN network topology structure with the separated intelligent driving chassis bus, the chassis wire control part and the chassis driving part are separated and connected into two different CAN networks, the load rate of the CAN bus is reduced, the stability of a vehicle system is improved, and the stability of data interaction is guaranteed.

Referring to fig. 1, the first CAN network 1 includes a first CAN bus, and further includes a vehicle body control module BCM, an electronic steering controller EPS, an electronic parking system EPB, and an electronic brake system EBS, and the vehicle body control module BCM, the electronic steering controller EPS, the electronic parking system EPB, and the electronic brake system EBS are all connected to the first CAN bus.

Referring to fig. 1, the second CAN network 2 includes a second CAN bus, and further includes a battery management system BMS, a battery thermal management system TMS, a motor thermal management system ATS, an air pump controller, a DCDC controller, and a combination meter, and the battery management system BMS, the battery thermal management system TMS, the motor thermal management system ATS, the air pump controller, the DCDC controller, and the combination meter are all connected to the second CAN bus.

Referring to fig. 1, the intelligent driving control system further comprises a third CAN network 3, the third CAN network 3 is used for intelligent driving control, the third CAN network 3 comprises a third CAN bus, the third CAN bus is also connected with a domain controller PDC, the third CAN network 3 further comprises an industrial personal computer, a combined navigation device, a CAN data recorder and a sensing system, and the industrial personal computer, the combined navigation device, the CAN data recorder and the sensing system are all connected to the third CAN bus. The nodes for controlling intelligent driving are distinguished from other CAN network nodes, so that the accuracy of data transmission of the nodes related to intelligent driving is ensured, and the reliability of the intelligent driving process is ensured.

In the present embodiment, domain controller PDC is of the model number joint trade-trade EV 2274A.

Referring to fig. 1, still include fourth CAN network 4 and be used for motor control, fourth CAN network 4 includes the fourth CAN bus, still includes that the owner drives unification more, motor VCU, data acquisition appearance and MCU, and the owner drives unification more, motor VCU, data acquisition appearance and MCU and all connects on the fourth CAN bus. The nodes for controlling the motor drive are distinguished from other CAN network nodes, so that the reliability of data transmission of the motor drive related nodes is improved, and the load rate of a CAN bus is reduced. In the embodiment of the application, the motor VCU adopts a specially-preferred VCU.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included in the scope of the claims and description of the present invention.

Claims

1. The utility model provides a CAN network topology structure of intelligence driving chassis bus separation which characterized in that, includes first CAN network and second CAN network, first CAN network is used for chassis drive-by-wire control, the second CAN network is used for chassis drive control, first CAN network with realize the data interaction through domain controller PDC between the second CAN network, domain controller PDC connect respectively in first CAN network with on the second CAN network.

2. The CAN network topology of claim 1, wherein the first CAN network comprises a first CAN bus, further comprising a body control module BCM, an electronic steering controller EPS, an electronic parking system EPB, and an electronic brake system EBS, the body control module BCM, the electronic steering controller EPS, the electronic parking system EPB, and the electronic brake system EBS all connected to the first CAN bus.

3. The CAN network topology of claim 2, wherein the second CAN network comprises a second CAN bus, further comprising a battery management system BMS, a battery thermal management system TMS, a motor thermal management system ATS, an air pump controller, a DCDC controller, and a cluster meter, the battery management system BMS, the battery thermal management system TMS, the motor thermal management system ATS, the air pump controller, the DCDC controller, and the cluster meter all connected to the second CAN bus.

4. The CAN network topology of claim 3, further comprising a third CAN network, the third CAN network being configured for intelligent driving control, the third CAN network comprising a third CAN bus, the third CAN bus also being connected to the domain controller PDC, the third CAN network further comprising an industrial personal computer, a combined navigation, a CAN data recorder, and a sensing system, the industrial personal computer, the combined navigation, the CAN data recorder, and the sensing system all being connected to the third CAN bus.

5. The CAN network topology of claim 3, further comprising a fourth CAN network for motor control, the fourth CAN network comprising a fourth CAN bus, and further comprising a master drive all-in-one, a motor VCU, a data acquisition instrument and an MCU, the master drive all-in-one, the motor VCU, the data acquisition instrument and the MCU all connected to the fourth CAN bus.