CN107942772A - A kind of limphome circuits of electronic selector - Google Patents
A kind of limphome circuits of electronic selector Download PDFInfo
- Publication number
- CN107942772A CN107942772A CN201711027462.2A CN201711027462A CN107942772A CN 107942772 A CN107942772 A CN 107942772A CN 201711027462 A CN201711027462 A CN 201711027462A CN 107942772 A CN107942772 A CN 107942772A
- Authority
- CN
- China
- Prior art keywords
- limphome
- grades
- control unit
- driving unit
- single chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Gear-Shifting Mechanisms (AREA)
- Control Of Transmission Device (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The limphome circuits of electronic selector of the present invention, including single chip control unit, driving unit, LINSBC foundation for security chip, limphome auxiliary units and P grades of solenoid valves；Single chip control unit drives P grades of electromagnetism valve deblockings with the input signal control driving unit produced according to driver's brake instruction；Driving unit is used to receive the control signal that single chip control unit is sent, and performs P grades of electromagnetism valve deblocking operations；It utilizes its LIMPOUT output functions to LINSBC foundation for security chip, single chip control unit and driving unit be abnormal be unable to reliably working when, output low level pass through limphome auxiliary units drive P grades of solenoid valve unlocking motions；Limphome auxiliary units, which are used to receiving the unlock instruction that LINSBC foundation for security chips send, to be performed P grade electromagnetism valve deblockings operations or directly unlocks P grades of solenoid valves when single chip control unit, driving unit and LINSBC foundation for security chip all occur and can not work extremely；The present invention improves the safe class of automotive electronics selector, improves the security of vehicle drive.
Description
Technical field
The present invention relates to technical field of automotive electronics, the limphome circuits of more particularly to a kind of electronic selector.
Background technology
At present, automobile driving safe is increasingly taken seriously, limphome circuits, i.e. limp-home circuit, is one
Lift the circuit of driving safety；Occur resetting in main control loop especially microcontroller or exception occur in other intelligent driver modules
When, its normal output state should be able to be kept, this is required independently of the circuit outside microcontroller and intelligent driver module to protect
Card, this is limphome circuits.
Automobile automatic gear shifting device (electronic selector), is considered based on vehicle start and parking safety, usually requires that possess P grades
Latch system, this function generally use drive a solenoid valve to captivate a mechanical structure to realize, brake, which is powered, to be unlocked
Can be with gear shift, parking returns to P grades of automatic lockings again；But solenoid-driven circuit when something goes wrong, can not just switch after parking
Gear；Under normal conditions, automobile guard block component need to be removed and relevant cover exposes shift mechanism, push mechanical lock buckle removal aside manually
It is P grades, comparatively laborious；In the case of running into shortage instrument, driver can not just drive to go home.
The content of the invention
The technical problem to be solved in the present invention is to provide it is a kind of it is safe, can ensure that vehicle is capable of one kind of limp-home
The limphome circuits of electronic selector.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of limphome circuits of electronic selector, the limphome circuits include：
One single chip control unit, its input signal control driving unit produced according to driver's brake instruction drive P grades
Electromagnetism valve deblocking；
One driving unit, driving unit are connected with single chip control unit, are sent for receiving single chip control unit
Control signal, and perform P grades of electromagnetism valve deblocking operations；
One LINSBC foundation for security chips, it utilizes its LIMPOUT output functions, in single chip control unit and driving
Unit is abnormal when being unable to reliably working, and output low level drives P grades of electromagnetism valve deblockings to move by limphome auxiliary units
Make；
One limphome auxiliary units, P grades of electricity are performed for receiving the unlock instruction that LINSBC foundation for security chips are sent
Magnet valve unlock operates or exception all occurs in single chip control unit, driving unit and LINSBC foundation for security chip can not work
P grades of solenoid valves are directly unlocked when making；
One P grades of solenoid valve.
In one embodiment of the invention, the single chip control unit is mainly a MCU system circuit, and if having
Dry I/O mouthfuls are exported with sampled input signal and driving.
In one embodiment of the invention, the driving unit is the flash drive integrated circult with intelligent diagnostics function
VN5160S-E。
In one embodiment of the invention, the LINSBC foundation for security chip includes a low pressure difference linearity voltage stabilizing
Device, a watchdog circuit and a LIN transceiver.
In one embodiment of the invention, the limphome auxiliary units include PNP triode, a biasing resistor
An and microswitch being directly connected to vehicle power supply VB electronics.
Through the above technical solutions, the beneficial effects of the invention are as follows：
The configuration of the present invention is simple, the safe class for improving automotive electronics selector, improve the security of vehicle drive,
Ensure that vehicle being capable of limp-home.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is structure diagram of the present invention；
Fig. 2 is circuit diagram of the present invention；
Corresponding component title of the numeral represented by with letter in figure：
10th, single chip control unit 20, driving unit 30, LINSBC foundation for security chip 31, low pressure difference linear voltage regulator
32nd, watchdog circuit 33, LIN transceivers 40, limphome auxiliary units 41, PNP triode 42, microswitch 50, P grades of electromagnetism
Valve.
Embodiment
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to shown in Fig. 1 and Fig. 2, the invention discloses a kind of limphome circuits of electronic selector, limphome electricity
Road include single chip control unit 10, driving unit 20, LINSBC foundation for security chip 30, limphome auxiliary units 40 and
P grades of solenoid valves 50.
Single chip control unit is mainly a MCU system circuit, and has several I/O mouthfuls with sampled input signal and drive
Dynamic output, its input signal control driving unit produced according to driver's brake instruction drive P grades of electromagnetism valve deblockings.
Driving unit is the flash drive integrated circult VN5160S-E with intelligent diagnostics function, driving unit and microcontroller
Control unit connects, the control signal sent for receiving single chip control unit, and performs P grades of electromagnetism valve deblocking operations.
LINSBC foundation for security chip 30 includes 31, watchdog circuits of a low pressure difference linear voltage regulator (LDO)
(watchdog) 32 and a LIN transceiver 33, it utilizes the output function of its LIMPOUT output ports, in microcontroller
Control unit and driving unit are abnormal when being unable to reliably working, export PNP of the low level by limphome auxiliary units
Triode drive P grades of solenoid valve unlocking motions, so as to so that vehicle can effective gear, realize limp-home.
Limphome auxiliary units 40 include a PNP triode 41, resistance R4, resistance R8 and one and vehicle power supply
The microswitch 42 that VB electronics is directly connected to, resistance R4, resistance R8 are connected in parallel between driving unit and PNP triode (Q3), micro-
Dynamic switch is hidden in shifter mechanism；Limphome auxiliary units are used to receive the unlock that LINSBC foundation for security chips are sent
Instruction perform P grade electromagnetism valve deblockings operate or in single chip control unit, driving unit and LINSBC foundation for security chip all
Occur directly unlocking P grades of solenoid valves when exception can not work.
Vehicle can utilize the LIMPOUT output characteristics of LINSBC foundation for security chips, be controlled in microcontroller in parking
Unit and driving unit are abnormal when being unable to reliably working, and low electricity is exported with the LIMP ports of LINSBC foundation for security chips
It is flat, by PNP triode (Q3) conducting P grades of solenoid valve unlocking motions of driving, so as to so that vehicle can effective gear,
Realize limp-home.
Present invention P grades of solenoid valves of driving have used two circuits, and single chip control unit is by controlling driving unit break-make to return
The LIMPOUT output ports of road and LINSBC foundation for security chips control PNP triode (Q3) circuit, when each component models all
During fault-free, after receiving brake instruction, single chip control unit implements unlock gear shift by controlling driving unit break-make circuit
Action, when single chip control unit, driving unit break-make circuit go wrong can not give electricity when, LINSBC foundation for security chip prison
Exception is controlled, LIMPOUT output ports output low level control PNP triode (Q3) conducting, makes P grades of solenoid valves unlocks.
When LINSBC foundation for security chip, single chip control unit or driving unit and PNP triode (Q3) all occur it is different
Chang Wufa work when, by feeler lever press microswitch close constrained feed, P grades of solenoid valves is electrolysed lock, so as to so that
Vehicle can effective gear, realize limp-home.
In order to avoid the influence of the transient pulse of the impulsive disturbance of switching pulse each other and the solenoid valve superposition in two circuits；Adopt
It is isolated from each other with two diodes D4 and D5, diode D4 is arranged between driving unit and P grades of solenoid valves, diode D5
It is arranged between PNP triode (Q3) and P grades of solenoid valves.
Certainly, when P grades of solenoid valves break down, shift bar can only be moved by the method for machinery, in this non-invention
Hold, be not added with repeating herein.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. the limphome circuits of a kind of electronic selector, it is characterised in that the limphome circuits include：
One single chip control unit, its input signal control driving unit produced according to driver's brake instruction drive P grades of electromagnetism
Valve deblocking；
One driving unit, driving unit are connected with single chip control unit, the control sent for receiving single chip control unit
Signal, and perform P grades of electromagnetism valve deblocking operations；
One LINSBC foundation for security chips, it utilizes its LIMPOUT output functions, in single chip control unit and driving unit
It is abnormal when being unable to reliably working, output low level passes through limphome auxiliary units and drives P grades of solenoid valve unlocking motions；
One limphome auxiliary units, P grades of solenoid valves are performed for receiving the unlock instruction that LINSBC foundation for security chips are sent
Unlock operates or when not working extremely all occurs in single chip control unit, driving unit and LINSBC foundation for security chip
Directly unlock P grades of solenoid valves；
One P grades of solenoid valve.
A kind of 2. limphome circuits of electronic selector according to claim 1, it is characterised in that the microcontroller control
Unit processed is mainly a MCU system circuit, and has several I/O mouthfuls to be exported with sampled input signal and driving.
A kind of 3. limphome circuits of electronic selector according to claim 1, it is characterised in that the driving unit
For the flash drive integrated circult VN5160S-E with intelligent diagnostics function.
A kind of 4. limphome circuits of electronic selector according to claim 1, it is characterised in that the LINSBC peaces
Full base chip includes a low pressure difference linear voltage regulator, a watchdog circuit and a LIN transceiver.
A kind of 5. limphome circuits of electronic selector according to claim 1, it is characterised in that the limphome
Auxiliary unit includes a PNP triode, biasing resistor and a microswitch being directly connected to vehicle power supply VB electronics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711027462.2A CN107942772B (en) | 2017-10-27 | 2017-10-27 | Limphome circuit of electronic shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711027462.2A CN107942772B (en) | 2017-10-27 | 2017-10-27 | Limphome circuit of electronic shifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107942772A true CN107942772A (en) | 2018-04-20 |
| CN107942772B CN107942772B (en) | 2020-12-15 |
Family
ID=61936526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711027462.2A Active CN107942772B (en) | 2017-10-27 | 2017-10-27 | Limphome circuit of electronic shifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107942772B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013001350A (en) * | 2011-06-21 | 2013-01-07 | Isuzu Motors Ltd | Limp home annunciation vehicle |
| CN103057461A (en) * | 2012-12-26 | 2013-04-24 | 联合汽车电子有限公司 | Vehicle body controller and method for achieving limping homing thereof |
| CN104417452A (en) * | 2013-09-09 | 2015-03-18 | 大陆汽车投资（上海）有限公司 | Automobile limp home control circuit |
| CN105523034A (en) * | 2014-09-29 | 2016-04-27 | 重庆长安汽车股份有限公司 | Control method and system for limping running of pure electric automobile |
| CN106499805A (en) * | 2016-12-09 | 2017-03-15 | 广州汽车集团股份有限公司 | Electronic gear shifter and automobile |
| US20170106854A1 (en) * | 2015-10-14 | 2017-04-20 | Hyundai Motor Company | Limp-home driving method during breakdown of parking switch for vehicle |
| CN106593147A (en) * | 2015-10-16 | 2017-04-26 | 联合汽车电子有限公司 | Passenger car door lock control unit |
-
2017
- 2017-10-27 CN CN201711027462.2A patent/CN107942772B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013001350A (en) * | 2011-06-21 | 2013-01-07 | Isuzu Motors Ltd | Limp home annunciation vehicle |
| CN103057461A (en) * | 2012-12-26 | 2013-04-24 | 联合汽车电子有限公司 | Vehicle body controller and method for achieving limping homing thereof |
| CN104417452A (en) * | 2013-09-09 | 2015-03-18 | 大陆汽车投资（上海）有限公司 | Automobile limp home control circuit |
| CN105523034A (en) * | 2014-09-29 | 2016-04-27 | 重庆长安汽车股份有限公司 | Control method and system for limping running of pure electric automobile |
| US20170106854A1 (en) * | 2015-10-14 | 2017-04-20 | Hyundai Motor Company | Limp-home driving method during breakdown of parking switch for vehicle |
| CN106593147A (en) * | 2015-10-16 | 2017-04-26 | 联合汽车电子有限公司 | Passenger car door lock control unit |
| CN106499805A (en) * | 2016-12-09 | 2017-03-15 | 广州汽车集团股份有限公司 | Electronic gear shifter and automobile |
Non-Patent Citations (1)
| Title |
|---|
| 王晓光 等: "汽车控制器LIMPHOME电路设计", 《汽车电器》 * |
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| Publication number | Publication date |
|---|---|
| CN107942772B (en) | 2020-12-15 |
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