CN104773121B - A kind of bus control unit for car steering tube column - Google Patents
A kind of bus control unit for car steering tube column Download PDFInfo
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- CN104773121B CN104773121B CN201510227623.7A CN201510227623A CN104773121B CN 104773121 B CN104773121 B CN 104773121B CN 201510227623 A CN201510227623 A CN 201510227623A CN 104773121 B CN104773121 B CN 104773121B
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- control unit
- bus control
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- tube column
- button
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- 238000003032 molecular docking Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 19
- 238000004891 communication Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
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- 230000010181 polygamy Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000008054 signal transmission Effects 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
- B60R16/027—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 between relatively movable parts of the vehicle, e.g. between steering wheel and column
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention discloses a kind of bus control unit for car steering tube column, it is characterised in that：Described bus control unit is provided with after LIN transceivers receive the control information of stacked switch and multi-functional steering wheel button and is sent into microprocessor, and signal processing circuit is sent into microprocessor in the signal of collection loudspeaker, steering wheel gearshift plectrum；After microprocessor is by all signal acquisitions, it is packaged into CAN signal frame message and is sent to by CAN transceiver in CAN network and be supplied to other controllers.Due to using above-mentioned structure, the present invention is greatly lowered wire harness cost, reduction topological complexity near steering column, reduces docking terminal and plug-in unit, with 20% that line amount is existing distribution amount；Increase autgmentability, limited by connector quantity, arrangement space etc. relatively fewer, be easy to Function Extension；Increase the diagnostic function to button loops such as stacked switch, steering wheel button, rotary angle transmitter, shift paddles, improve malfunction elimination efficiency.
Description
Technical field
The present invention relates to automotive electronics electrical apparatus technology, more particularly to a kind of bus control unit for car steering tube column.
Background technology
Being arranged in the part near car steering tube column mainly has stacked switch, steering wheel, rotary angle transmitter, shift paddle
Deng.Stacked switch includes signal light control and windscreen wiper controls two big functions.Wherein signal light control includes high beam, dipped headlight, left and right
The control functions such as steering indicating light, fog lamp；Windscreen wiper control includes the functions such as high speed windscreen wiper, low speed windscreen wiper, washing water spray.Multifunctional direction
Disk is also the product of automotive infotainment functional diversities, is integrated with sound equipment control, air-conditioning on the steering wheel of many automobiles at present
The function buttons such as regulation, car phone, cruise, operation readiness is brought to also increase answering for wire harness topology while experience to user
Polygamy.Conventional meanses are point-to-point wire type automobile circuit control methods, and N number of signal control must will at least have more than N+1
Root wire could realize connection and control.
The stacked switch on automobile and steering wheel button are directly to be connected with control terminal by wire mostly at present.With vapour
The rapid growth of car electric equipment, it is integrated in the function near steering column and increases therewith, the wire harness topology near steering column
Complexity increases, cost increases, and so as to cause fault rate high, and is not easy to diagnose and repairs.
In view of the above-mentioned problems, providing a kind of bus control unit for car steering tube column, it is attached to solve car steering tube column
Become increasingly abundant and the switch key and the complicated various contradiction of wire harness of nearly electric function, reach the mesh of wire harness at optimization steering column
's.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of bus control unit for car steering tube column, solves
Car steering tube column nearby electric function become increasingly abundant and the complicated various contradiction of switch key and wire harness, reach optimization and turn to
The purpose of wire harness at tubing string.
To reach above-mentioned purpose, the technical scheme is that, a kind of bus control unit for car steering tube column, its
It is characterised by：Described bus control unit is provided with the control letter that LIN transceivers receive stacked switch and multi-functional steering wheel button
Microprocessor is sent into after breath, signal processing circuit is sent into microprocessor in the signal of collection loudspeaker, steering wheel gearshift plectrum；Micro- place
After device is managed by all signal acquisitions, it is packaged into CAN signal frame message and is sent to by CAN transceiver in CAN network
It is supplied to other controllers.
Described stacked switch includes signal light control and windscreen wiper controls, and signal light control assembly includes main furnace building light switch, dipped beam
Lamp switch, fog lamp switch, turning indicator control, small lamp switch；Windscreen wiper control assembly includes windscreen wiper low or first gear, top gear, interval shelves,
There are intermittent time regulation, washer switch in addition.
Described multi-functional steering wheel button includes audio entertainment button, meter key, cruise button, loudspeaker button, side
Button is heated to disk.
Described bus control unit is internally integrated rotary angle transmitter, and rotary angle transmitter directly passes through steering angle signal
CAN is sent to ESP controller.
Described microprocessor selects the μ PD70F3374 of auspicious Sa.
Described CAN transceiver uses NXP TJA1042T.
Described LIN transceivers use NXP RL78.
Other described controllers include gearbox control, car body controller, instrument controller, acoustic controller, electricity
Sub- stability program controller.
Described microprocessor is worked by signal processing circuit control direction disk resistive heater.
A kind of bus control unit for car steering tube column, due to using above-mentioned structure, the present invention is greatly lowered
Wire harness cost, reduction topological complexity near steering column, reduce docking terminal and plug-in unit, are existing distribution amount with line amount
20%；Increase autgmentability, limited by connector quantity, arrangement space etc. relatively fewer, be easy to Function Extension；Increase is to group
The diagnostic function in the button loops such as combination switch, steering wheel button, rotary angle transmitter, shift paddle, improve malfunction elimination efficiency.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description；
Fig. 1 is a kind of structure connection figure of bus control unit for car steering tube column of the invention；
Fig. 2 is a kind of structured flowchart of bus control unit for car steering tube column of the invention；
In Fig. 1-2,1, microprocessor；2nd, signal processing circuit；3rd, CAN transceiver；4th, LIN transceivers.
Embodiment
The present invention is arranged near steering column, receives the letter such as light regulation, windscreen wiper, steering wheel button, rotary angle transmitter
Number.The controller possesses CAN, LIN interface and conductor interface, can be selected according to the configuration of stacked switch, steering wheel etc. itself
The mode of signal transmitting and receiving.The controller is handled after receiving signal by microprocessor 1, changes into CAN signal and by total
Line is sent on network to corresponding receiving node.The controller is provided simultaneously with diagnostic function, can diagnose stacked switch, direction
The failures such as disk button, rotary angle transmitter, improve the fault restoration efficiency in the region, additionally it is possible to realize and each switch block is inputted
The diagnostic operations such as the diagnosis control of output control, time data stream, Configuration Online.
In the present invention peripheral components related to bus-control device have stacked switch, multi-functional steering wheel, loudspeaker button,
Steering wheel gearshift plectrum and CAN network.The bus-control device is by signal processing circuit 2, microprocessor 1, CAN transceiver
3rd, LIN transceivers 4 form.The signal of reception mostlys come from following and individual aspect：Stacked switch, including signal light control and windscreen wiper
Control.Signal light control assembly includes main furnace building light switch, dipped beam lamp switch, fog lamp switch, turning indicator control, small lamp switch；Windscreen wiper
Assembly is controlled to include windscreen wiper low or first gear, top gear, interval shelves, in addition also intermittent time regulation, washer switch etc.；Traditional skill
The signal of stacked switch is to be connected to carry out signal transmission with the controller by the wire on 10 tunnels or so in art, is combined in the present invention
Switch is communicated using LIN interfaces with microprocessor 1；Multi-functional steering wheel button, including audio entertainment button, meter key, patrol
Navigate button, loudspeaker button, steering wheel heating button etc., with the fast development of automotive infotainment function, is integrated in steering wheel
On button also can be increasing.Multi-functional steering wheel built-in integrated circuit, after receiving each push button signalling, it is converted into LIN letters
Number it is sent to microprocessor 1；The present invention is internally integrated rotary angle transmitter, just for the vehicle equipped with rotary angle transmitter, the control
Steering angle signal is directly sent to ESP controller by device by CAN
As shown in Figure 1-2, stacked switch and multi-functional steering wheel are connect as LIN communication nodes with the controller by LIN
Mouth is connected, and position is very near, and wire dosage is seldom.The CAN interface of the controller is connected to vehicle according to nearby principle
On CAN wire harness, it is only necessary to 2 very short wire harness.Whole scheme is effectively reduced the wire line amount of existing scheme.With
Prior art is compared, and the present invention program wire harness topology is simple, wire cost is low, few using PIN, and the work(near steering column
When can increase, the less limitation for being limited to arrangement space.As shown in Fig. 2 by signal processing circuit 2, micro- inside the controller
Processor 1 and CAN transceiver 3, LIN transceivers 4 form, and microprocessor 1 selects the μ PD70F3374 of auspicious Sa, and the chip belongs to
V850 series, it is the high-performance microprocessor of a 32；CAN transceiver 3 is a high-speed CAN using NXP TJA1042T
Transceiver；LIN transceivers 4 use NXP RL78.Signal processing circuit gathers loudspeaker, the signal of steering wheel gearshift plectrum respectively；
Multi-functional steering wheel and stacked switch communicate as LIN nodes with controller；After microprocessor 1 is by all signal acquisitions,
It is packaged into CAN signal frame message and is sent in bus network and is supplied to other controllers.
The present invention receives the signal from each switch.The vehicle power of automobile is 12V, and microprocessor needs+5V
Dc source, it is therefore desirable to after carrying out DC voltage conversion to vehicle power, voltage is provided for system.Loudspeaker button, steering wheel
12V switching signals are changed into 5V switches digitals by shift paddle by signal processing circuit, are entered by I/O ports and are located in a subtle way
Manage device 1；Switching information is sent to microprocessor 1 by stacked switch, steering wheel by LIN communication interfaces.The present invention sends each
The signal of switch is to CAN.CAN transceiver 3, for the interface between CAN controller and physical bus, there is provided to total
The ability that the difference of line sends and receives, while realize level conversion.Controller realizes the week of data frame by software programming
Phase property is sent.CAN communication agreement of the present invention uses Motorola forms, meets ISO11898 international standards, uses
The standard frame of 11 indications.The present invention can carry out fault diagnosis functions to stacked switch, steering wheel key circuit, if detecting
Some loop is broken down, then DTC is stored in internal memory.The diagnostic function realized also include input and output control function,
Time data stream Data flow function, change configuration etc..Diagnosing protocol uses international mainstream UDS standard diagnostics agreements.
Wire harness cost, reduction topological complexity near steering column can be greatly lowered in the present invention, reduce butt end
Son and plug-in unit, with 20% that line amount is existing distribution amount；Increase autgmentability, multi-functional steering wheel and stacked switch, rotation angular sensing
It can be connected between the signal input parts such as device and the control module with wire or pass through LIN interface communications；If have more
Multifunctional unit is limited relatively fewer near steering column by connector quantity, arrangement space etc., is easy to function to expand
Exhibition；Increase the diagnostic function to button loops such as stacked switch, steering wheel button, rotary angle transmitter, shift paddles, improve failure
Investigate efficiency.Compared with prior art, the present invention can effectively reduce vehicle body wiring, reduce wire harness cost and complexity；
The CAN communication mode taken has antijamming capability, mistake OBD ability and automatic recovery capability, increases signal
The stability of transmission；Invention enhances the autgmentability of electric function upgrading, makes the extension of function near steering column unrestricted
In the limitation of wiring space, plug-in unit, pin etc..
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, it is or not improved directly applying to other occasions as long as employing the various improvement of technical solution of the present invention progress,
Within protection scope of the present invention.
Claims (8)
- A kind of 1. bus control unit for car steering tube column, it is characterised in that：Described bus control unit is received and dispatched provided with LIN Device (4) receives stacked switch with being sent into microprocessor (1), signal processing circuit after the control information of multi-functional steering wheel button (2) it is sent into microprocessor (1) in the signal of collection loudspeaker, steering wheel gearshift plectrum；Microprocessor (1) is complete by all signal acquisitions Bi Hou, is packaged into CAN signal frame message and is sent to by CAN transceiver (3) in CAN network and be supplied to other controllers； Bus control unit is internally integrated rotary angle transmitter simultaneously, and rotary angle transmitter directly sent out steering angle signal by CAN Give ESP controller.
- A kind of 2. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described group Combination switch includes signal light control and windscreen wiper and controlled, signal light control assembly include main furnace building light switch, dipped beam lamp switch, fog lamp switch, Turning indicator control, small lamp switch；Windscreen wiper control assembly includes windscreen wiper low or first gear, top gear, interval shelves, in addition also intermittent time Regulation, washer switch.
- A kind of 3. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described is more Function steering wheel button includes audio entertainment button, meter key, cruise button, loudspeaker button, steering wheel heating button.
- A kind of 4. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described its He includes gearbox control, car body controller, instrument controller, acoustic controller, ESP controller by controller.
- A kind of 5. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described is micro- μ PD70F3374 of the processor (1) from auspicious Sa.
- A kind of 6. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described CAN transceiver (3) uses NXP TJA1042T.
- A kind of 7. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described LIN transceivers (4) use NXP RL78.
- A kind of 8. bus control unit for car steering tube column according to claim 1, it is characterised in that：Described is micro- Processor (1) is worked by signal processing circuit (2) control direction disk resistive heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510227623.7A CN104773121B (en) | 2015-05-06 | 2015-05-06 | A kind of bus control unit for car steering tube column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510227623.7A CN104773121B (en) | 2015-05-06 | 2015-05-06 | A kind of bus control unit for car steering tube column |
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| Publication Number | Publication Date |
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| CN104773121A CN104773121A (en) | 2015-07-15 |
| CN104773121B true CN104773121B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510227623.7A Active CN104773121B (en) | 2015-05-06 | 2015-05-06 | A kind of bus control unit for car steering tube column |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043164A (en) * | 2016-07-25 | 2016-10-26 | 金龙联合汽车工业（苏州）有限公司 | Main light switch integration system used for passenger car |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0239975B1 (en) * | 1986-04-02 | 1994-01-12 | Izumi Corporation Industries, Inc. | Multiple switch control system |
| CN101480937A (en) * | 2008-12-17 | 2009-07-15 | 奇瑞汽车股份有限公司 | Vehicle body control system based on LIN bus |
| CN102407877A (en) * | 2011-08-30 | 2012-04-11 | 奇瑞汽车股份有限公司 | Electric steering transmission control device of automobile steering wheel and control method thereof |
| CN103010285A (en) * | 2011-09-26 | 2013-04-03 | 比亚迪股份有限公司 | Steering column control device and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738395B (en) * | 2014-01-15 | 2016-08-31 | 厦门金龙旅行车有限公司 | A kind of integral new-energy passenger electric-controlled hydraulic power-assisted steering control system and control method |
-
2015
- 2015-05-06 CN CN201510227623.7A patent/CN104773121B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0239975B1 (en) * | 1986-04-02 | 1994-01-12 | Izumi Corporation Industries, Inc. | Multiple switch control system |
| CN101480937A (en) * | 2008-12-17 | 2009-07-15 | 奇瑞汽车股份有限公司 | Vehicle body control system based on LIN bus |
| CN102407877A (en) * | 2011-08-30 | 2012-04-11 | 奇瑞汽车股份有限公司 | Electric steering transmission control device of automobile steering wheel and control method thereof |
| CN103010285A (en) * | 2011-09-26 | 2013-04-03 | 比亚迪股份有限公司 | Steering column control device and control method thereof |
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| CN104773121A (en) | 2015-07-15 |
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