CN110606031A - Vehicle-mounted control system and method for optimizing control line - Google Patents
Vehicle-mounted control system and method for optimizing control line Download PDFInfo
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- CN110606031A CN110606031A CN201910707337.9A CN201910707337A CN110606031A CN 110606031 A CN110606031 A CN 110606031A CN 201910707337 A CN201910707337 A CN 201910707337A CN 110606031 A CN110606031 A CN 110606031A
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- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 6
- 238000005457 optimization Methods 0.000 claims 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 9
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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- 230000008054 signal transmission Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
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- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention relates to the technical field of vehicle-mounted control, in particular to a vehicle-mounted control system and a method for optimizing a control line, wherein the control system comprises a vehicle body control system provided with a first CAN interface chip and a first processing chip which are in communication connection with each other, and a vehicle-mounted multimedia system provided with a second CAN interface chip and a second processing chip which are in communication connection with each other; the vehicle-mounted multimedia system further comprises a first control wiring harness connected with the first processing chip and a second control wiring harness connected with the vehicle body control system and the vehicle-mounted multimedia system. The invention solves the problems that the EMI and the wiring harness cost of the whole vehicle are increased and the system reliability is reduced due to the arrangement of a large number of control lines between the conventional vehicle body control system and the vehicle-mounted multimedia system.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted control, in particular to a vehicle-mounted control system and method for optimizing a control line.
Background
Along with the improvement of people's standard of living, the car is more and more popularized, people constantly improve to the requirement of car security, travelling comfort, economic nature, and more function needs operate and show on-vehicle multimedia system, leads to the control line between automobile body and the on-vehicle multimedia system to be more and more, and too much control line not only makes system control more complicated, produces too much EMI problem, can increase the pencil cost of whole car moreover, produces a lot of adverse effects to whole system reliability simultaneously.
Among them, emi (electromagnetic interference) which affects system reliability is electromagnetic interference, which is an interference phenomenon generated after electromagnetic waves and electronic components act, and is a problem often encountered by electronic and electrical products. The electromagnetic interference related to the sensor is divided into an electromagnetic interference source, an interference propagation path and sensitive equipment, wherein the electromagnetic interference path is divided into a conduction coupling mode and a radiation coupling mode, conduction transmission must occur between the interference source and the sensor through complete circuit connection, interference signals are transmitted to the sensor along a connecting circuit to generate interference phenomena, and the transmission circuit can comprise a lead, a conductive component of the equipment, a power supply, a common impedance, a grounding flat plate, a resistor, an inductor, a capacitor, a mutual inductance element and the like.
Disclosure of Invention
The invention provides a vehicle-mounted control system and method for optimizing control lines, and mainly solves the problems that the number of control lines is large between the existing vehicle body control system and a vehicle-mounted multimedia system, the EMI (electro-magnetic interference) of the whole vehicle and the cost of a wire harness are increased, and the reliability of the system is reduced.
The invention provides a vehicle-mounted control system for optimizing a control line, which comprises a vehicle body control system and a vehicle-mounted multimedia system, wherein the vehicle body control system is provided with a first CAN interface chip and a first processing chip which are in communication connection with each other, and the vehicle-mounted multimedia system is provided with a second CAN interface chip and a second processing chip which are in communication connection with each other;
the vehicle-mounted multimedia system further comprises a first control wiring harness connected with the first processing chip and a second control wiring harness connected with the vehicle body control system and the vehicle-mounted multimedia system;
the first control wire harness is used for transmitting a vehicle body control signal to the first processing chip;
the first processing chip is used for processing the vehicle body control signal and sending the processed vehicle body control signal and the CAN communication signal to the first CAN interface chip;
the first CAN interface chip is used for sending the vehicle body control signal and the CAN communication signal to the second CAN interface chip through the second control wire harness;
the second CAN interface chip is used for sending the vehicle body control signal and the CAN communication signal to the second processing chip;
and the second processing chip is used for receiving and processing the vehicle body control signal and the CAN communication signal.
Preferably, the vehicle body control system is electrically connected with the vehicle-mounted multimedia system through a power line; the vehicle body control system is also used for providing power for the vehicle-mounted multimedia system through the power line.
Preferably, the first control wire harness at least comprises a vehicle key opening control signal access line, a vehicle lamp detection control signal access line, a reversing control signal access line, a steering wheel key control signal access line and a hand brake control signal access line.
Preferably, the car body control signal at least comprises a car key opening control signal access line, a car light detection control signal access line, a car backing control signal access line, a car key opening control signal transmitted by the steering wheel key control signal access line and the hand brake control signal access line, a car light detection control signal, a car backing control signal, a steering wheel key control signal and a hand brake control signal.
Preferably, the second control harness includes a CAN-H transmission line and a CAN-L transmission line.
The invention also provides a vehicle-mounted control method for optimizing the control line, which comprises the following steps:
s1, transmitting a vehicle body control signal to a first processing chip of a vehicle body control system through a first control wire harness;
s2, the first processing chip processes the vehicle body control signal and sends the processed vehicle body control signal and CAN communication signal to a first CAN interface chip vehicle-mounted multimedia system of the vehicle body control system;
s3, the first CAN interface chip sends the vehicle body control signal and the CAN communication signal to a second CAN interface chip of the vehicle-mounted multimedia system through a second control wire harness;
s4, the second CAN interface chip sends the received vehicle body control signal and CAN communication signal to a second processing chip of the vehicle-mounted multimedia system;
and S5, the second processing chip receives and processes the vehicle body control signal and the CAN communication signal.
Preferably, before the step S1, a step S0 is further provided, in which the vehicle body control system supplies power to the in-vehicle multimedia system through a power line.
Preferably, in the step S1, the first control harness at least includes a car key opening control signal access line, a car light detection control signal access line, a reverse control signal access line, a steering wheel key control signal access line, and a hand brake control signal access line.
Preferably, in the steps S1 to S5, the vehicle body control signal at least includes a vehicle key on control signal access line, a vehicle light detection control signal access line, a reverse control signal access line, a vehicle key on control signal transmitted by the steering wheel key control signal access line and the hand brake control signal access line, a vehicle light detection control signal, a reverse control signal, a steering wheel key control signal and a hand brake control signal.
Preferably, in the step S3, the second control harness includes a CAN-H transmission line and a CAN-L transmission line.
From the above, the following beneficial effects can be obtained by applying the technical scheme provided by the invention: in the system and the method provided by the invention, the vehicle body control signal only needs to be input into the processing chip in the vehicle body control system through the first control wire harness, and the vehicle body control signal is transmitted to the processing chip of the vehicle-mounted multimedia system by virtue of the CAN communication signal transmission channel, so that a plurality of complex control wires are prevented from being laid between the vehicle body control system and the vehicle-mounted multimedia system, the EMI (electro-magnetic interference) of the whole vehicle and the cost of the wire harness are reduced, and the reliability of the system is further improved.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a connection block diagram of a vehicle control system according to an embodiment of the present invention;
fig. 2 is a flow chart of a vehicle-mounted control method according to an embodiment of the present invention.
Description of reference numerals: the vehicle-mounted multimedia system comprises a vehicle-mounted control system 10 (a first CAN interface chip 11 and a first processing chip 12), a vehicle-mounted multimedia system 20 (a second CAN interface chip 21 and a second processing chip 22), a first control wiring harness 31, a second control wiring harness 32 and a power line 33.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The existing vehicle body control system and the vehicle-mounted multimedia system are provided with a great number of control lines, so that the cost of the EMI and the wiring harness of the whole vehicle is increased, and the reliability of the system is reduced.
As shown in fig. 1, in order to solve the above problem, the present embodiment provides a vehicle-mounted control system for optimizing a control line, the control system mainly includes a vehicle body control system 10 and a vehicle-mounted multimedia system 20, wherein the vehicle body control system 10 is provided with a first CAN interface chip 11 and a first processing chip 12 that are in communication connection with each other, the vehicle-mounted multimedia system 20 is provided with a second CAN interface chip 21 and a second processing chip 22 that are in communication connection with each other, in addition, the first processing chip 12 is further connected with a first wire harness, and a second control wire harness 32 is connected between the vehicle body control system 10 and the vehicle-mounted multimedia system 20.
The first control wire harness 31 is used for transmitting a vehicle body control signal to the first processing chip 12; the first processing chip 12 is used for processing the vehicle body control signal and sending the processed vehicle body control signal and the CAN communication signal to the first CAN interface chip 11; the first CAN interface chip 11 is used for sending a vehicle body control signal and a CAN communication signal to the second CAN interface chip 21 through a second control wiring harness 32; the second CAN interface chip 21 is used for sending the vehicle body control signal and the CAN communication signal to the second processing chip 22; and the second processing chip 22 is used for receiving and processing the vehicle body control signal and the CAN communication signal.
In this embodiment, the second control harness is still disposed between the vehicle-mounted control system and the vehicle-mounted multimedia system 20, and may still be used for conducting CAN communication signals, and the vehicle-mounted control signals are processed in the first processing chip 12 and then conducted to the vehicle-mounted multimedia system 20 through the second control harness 32, so that the length of the first control harness 31 originally used for conducting the control signals CAN be greatly reduced, the EMI of the vehicle CAN be reduced, the cost of the harness CAN be further reduced, meanwhile, the transmission process of the vehicle-mounted control signals is not affected, and it is ensured that the response of the corresponding vehicle-mounted device CAN be realized after the control signals are transmitted.
More specifically, the vehicle body control system 10 is electrically connected with the vehicle-mounted multimedia system 20 through a power cord 33; the vehicle body control system 10 is also used for providing power for the vehicle-mounted multimedia system 20 through a power line 33.
In the embodiment, the power line 33 is configured to separate signal transmission and power transmission, and enable the vehicle multimedia system 20 to be started by the vehicle control system, that is, the vehicle multimedia system 20 can be started only after the vehicle control system is started, which is helpful for controlling the starting time and duration of the vehicle multimedia.
Preferably, the power supply line 33 includes a positive power supply line and a negative power supply line.
More specifically, the first control harness 31 at least includes a car key opening control signal access line, a car light detection control signal access line, a reversing control signal access line, a direction key control signal access line and a hand brake control signal access line.
More specifically, the vehicle body control signal at least comprises a vehicle key starting control signal access line, a vehicle lamp detection control signal access line, a reversing control signal access line, a vehicle key starting control signal (ACC), a vehicle lamp detection control signal (ILL), a reversing control signal (REVERSE), a steering wheel key control Signal (SWC) and a hand brake control signal (park) which are transmitted by the steering wheel key control signal access line and the hand brake control signal access line.
In the present embodiment, the first control harness 31 is used for transmitting the control signal between the in-vehicle control system and the in-vehicle multimedia system 20, so the control signal is not limited to the above category as long as the control signal to be transmitted from the in-vehicle control system to the in-vehicle multimedia system 20 is transmitted by the first control harness 31.
More specifically, the second control harness 32 includes a CAN-H transmission line and a CAN-L transmission line.
As shown in fig. 2, the present embodiment further provides a vehicle-mounted control method for optimizing a control line, which mainly includes the following steps:
s1, transmitting a vehicle body control signal to a first processing chip of a vehicle body control system through a first control wire harness;
s2, the first processing chip processes the vehicle body control signal and sends the processed vehicle body control signal and the CAN communication signal to a first CAN interface chip of the vehicle body control system;
s3, the first CAN interface chip sends a vehicle body control signal and a CAN communication signal to a second CAN interface chip of the vehicle-mounted multimedia system through a second control wire harness;
s4, the second CAN interface chip sends the received vehicle body control signal and the CAN communication signal to a second processing chip of the vehicle-mounted multimedia system;
and S5, the second processing chip receives and processes the vehicle body control signal and the CAN communication signal.
In this embodiment, the vehicle body control signal is transmitted to the vehicle-mounted multimedia system through the second control harness by the vehicle-mounted control method, so that the first control harness is prevented from being arranged between the vehicle-mounted control system and the vehicle-mounted multimedia system, the length of the first control harness is reduced, and the EMI of the entire vehicle is reduced.
More specifically, before step S1, step S0 is provided, and the vehicle body control system supplies power to the in-vehicle multimedia system through the power cord.
In step S1, the first control harness at least includes a car key opening control signal access line, a car light detection control signal access line, a reverse control signal access line, a steering wheel key control signal access line, and a hand brake control signal access line.
In steps S1 to S5, the vehicle body control signal at least includes a vehicle key on control signal access line, a vehicle light detection control signal access line, a reverse control signal access line, a vehicle key on control signal transmitted from the steering wheel key control signal access line and the hand brake control signal access line, a vehicle light detection control signal, a reverse control signal, a steering wheel key control signal, and a hand brake control signal.
In step S3, the second control harness includes a CAN-H transmission line and a CAN-L transmission line.
In this embodiment, the vehicle body control signal is input to the first processing chip of the vehicle body control system, and is output to the first CAN interface chip together with the CAN communication signal after being processed, and finally the vehicle body control system transmits the vehicle body control signal to the vehicle-mounted multimedia system through the second control wire harness, and the CAN communication signal is received by the second CAN interface chip, and is transmitted to the second processing chip for further decoding processing, and the decoded signal is transmitted to the corresponding vehicle-mounted device, so as to complete the corresponding signal response.
In summary, in this embodiment, the control signal is directly input to the first processing chip of the vehicle-mounted control system, the first processing chip sends the control signal together with the CAN communication signal to the first CAN interface chip, and then the control signal is transmitted to the vehicle-mounted multimedia system through the second control harness, so that the length of the vehicle-mounted control line is shortened, EMI is reduced, and the reliability of the vehicle-mounted control system is ensured.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. A vehicle-mounted control system for optimizing a control line comprises a vehicle body control system (10) provided with a first CAN interface chip (11) and a first processing chip (12) which are in communication connection with each other, and a vehicle-mounted multimedia system (20) provided with a second CAN interface chip (21) and a second processing chip (22) which are in communication connection with each other;
the method is characterized in that:
the vehicle-mounted multimedia system further comprises a first control wiring harness (31) connecting the first processing chip (12) and a second control wiring harness (32) connecting the vehicle body control system (10) and the vehicle-mounted multimedia system (20);
the first control wire harness (31) is used for transmitting a vehicle body control signal to the first processing chip (12);
the first processing chip (12) is used for processing the vehicle body control signal and sending the processed vehicle body control signal and the CAN communication signal to the first CAN interface chip (11);
the first CAN interface chip (11) is used for sending the vehicle body control signal and the CAN communication signal to the second CAN interface chip (21) through the second control wiring harness (32);
the second CAN interface chip (21) is used for sending the vehicle body control signal and the CAN communication signal to the second processing chip (22);
and the second processing chip (22) is used for receiving and processing the vehicle body control signal and the CAN communication signal.
2. The on-board control system for optimizing control lines of claim 1, wherein: the vehicle body control system (10) is electrically connected with the vehicle-mounted multimedia system (20) through a power line (33);
the vehicle body control system (10) is also used for providing power for the vehicle-mounted multimedia system (20) through the power line (33).
3. The on-board control system for optimizing a control line of claim 2, wherein: the first control wiring harness (31) at least comprises a vehicle key opening control signal access line, a vehicle lamp detection control signal access line, a reversing control signal access line, a steering wheel key control signal access line and a hand brake control signal access line.
4. The on-board control system for optimizing control lines of claim 3, wherein:
the vehicle body control signal at least comprises a vehicle key starting control signal access line, a vehicle lamp detection control signal access line, a reversing control signal access line, a vehicle key starting control signal transmitted by the steering wheel key control signal access line and the hand brake control signal access line, a vehicle lamp detection control signal, a reversing control signal, a steering wheel key control signal and a hand brake control signal.
5. The on-board control system for optimizing a control line of claim 2, wherein: the second control harness (32) comprises a CAN-H transmission line and a CAN-L transmission line.
6. An on-board control method for optimizing a control line, comprising the steps of:
s1, transmitting a vehicle body control signal to a first processing chip of a vehicle body control system through a first control wire harness;
s2, the first processing chip processes the vehicle body control signal and sends the processed vehicle body control signal and the processed CAN communication signal to a first CAN interface chip of the vehicle body control system;
s3, the first CAN interface chip sends the vehicle body control signal and the CAN communication signal to a second CAN interface chip of the vehicle-mounted multimedia system through a second control wire harness;
s4, the second CAN interface chip sends the received vehicle body control signal and CAN communication signal to a second processing chip of the vehicle-mounted multimedia system;
and S5, the second processing chip receives and processes the vehicle body control signal and the CAN communication signal.
7. The on-board control method for optimizing a control line according to claim 6, wherein before step S1, there is further provided the step of:
and S0, the vehicle body control system provides power for the vehicle-mounted multimedia system through a power line.
8. The on-board control method of an optimization control line according to claim 7, characterized in that: in the step S1, the first control harness at least includes a car key opening control signal access line, a car light detection control signal access line, a reversing control signal access line, a steering wheel key control signal access line, and a hand brake control signal access line.
9. The on-board control method of optimizing a control line of claim 8, characterized in that:
in the steps S1 to S5, the vehicle body control signal at least includes a vehicle key turning control signal access line, a vehicle light detection control signal access line, a reverse control signal access line, a vehicle key turning control signal transmitted by the steering wheel key control signal access line and the hand brake control signal access line, a vehicle light detection control signal, a reverse control signal, a steering wheel key control signal and a hand brake control signal.
10. The on-board control method of an optimization control line according to claim 6, characterized in that: in the step S3, the second control harness includes a CAN-H transmission line and a CAN-L transmission line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910707337.9A CN110606031A (en) | 2019-08-01 | 2019-08-01 | Vehicle-mounted control system and method for optimizing control line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910707337.9A CN110606031A (en) | 2019-08-01 | 2019-08-01 | Vehicle-mounted control system and method for optimizing control line |
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| CN110606031A true CN110606031A (en) | 2019-12-24 |
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| CN201910707337.9A Pending CN110606031A (en) | 2019-08-01 | 2019-08-01 | Vehicle-mounted control system and method for optimizing control line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809612A (en) * | 2021-07-31 | 2021-12-17 | 重庆长安汽车股份有限公司 | Design method of HSD automobile wire harness |
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