CN108803399A - Vehicle control device and its control method - Google Patents
Vehicle control device and its control method Download PDFInfo
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- CN108803399A CN108803399A CN201710302129.1A CN201710302129A CN108803399A CN 108803399 A CN108803399 A CN 108803399A CN 201710302129 A CN201710302129 A CN 201710302129A CN 108803399 A CN108803399 A CN 108803399A
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- 238000005070 sampling Methods 0.000 claims description 3
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- 230000005540 biological transmission Effects 0.000 description 4
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- 230000033772 system development Effects 0.000 description 4
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Classifications
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- 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
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- 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
-
- 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
Abstract
The present invention provides a kind of vehicle control device and its control method, the control method of the vehicle control device includes：Power control unit sends the first control command to OR circuit, and the OR circuit forms a power control signal according to first control command；The OR circuit sends the power control signal to driving circuit, and the driving circuit forms a power signal according to the power control signal；The driving circuit sends the power signal to the feedback circuit；The power control unit also sends the status information of its own to the central processing unit, and the central processing unit controls the feedback circuit break-make according to the status information；When the feedback circuit conducting, the feedback circuit forms the second control command according to the power signal；The feedback circuit sends second control command to the OR circuit, and the OR circuit continues to output the power control signal according to second control command.
Description
Technical field
The present invention relates to technical field of automotive electronics, more particularly to a kind of vehicle control device and its control method.
Background technology
At present on vehicle control device product, the function of power supply control is realized by adding a power supply control chip,
The design that cannot be satisfied functional safety, when the power supply control chip breaks down, the power supply of vehicle is interrupted suddenly, if vehicle is just
In running at high speed, power failure may result in serious traffic accident and consequence.Therefore superfluous to be realized to vehicle power supply
Remaining control needs to reach the output of dual power supply control signal, this generally requires the scheme using dual power supply control chip, be exactly
A power control signal is exported respectively with two power supply control chips on product, realizes power control function jointly, if two
In a chip, one is failed, and the power control signal of itself cannot be exported, then also has another chip still exporting
Power control signal, using the logic of "or", it is ensured that output is still effective, ensures safety, but this method is of high cost,
Complicated, system development difficulty is big, and instruction conflict may also can occur for dual power supply control chip, and reliability is difficult to ensure.
Therefore, it is necessary to design a kind of dual power supply that reliability is high control signal output, to realize power supply redundancy control
Vehicle control device and its control method.
Invention content
The purpose of the present invention is to provide a kind of vehicle control device and its control methods, to solve existing vehicle control device
The problem of middle power supply redundancy control.
In order to solve the above technical problems, the present invention provides a kind of vehicle control device, the vehicle control device includes centre
Device, power control unit, feedback circuit, OR circuit and driving circuit are managed, wherein：
The power control unit sends the first control command to the OR circuit, and the OR circuit is according to described the
One control command forms a power control signal；
The OR circuit sends the power control signal to the driving circuit, and the driving circuit is according to the electricity
Source controls signal and forms a power signal；
The driving circuit sends the power signal to the feedback circuit；
The power control unit also sends the status information of its own, the central processing unit to the central processing unit
The feedback circuit break-make is controlled according to the status information；
When the feedback circuit conducting, the feedback circuit forms the second control command according to the power signal；
The feedback circuit sends second control command to the OR circuit, and the OR circuit is according to described the
Two control commands continue to output the power control signal.
Optionally, in the vehicle control device, the status information includes fault status information or normal condition letter
Breath.
Optionally, in the vehicle control device, the feedback circuit includes switching circuit, wherein：The centre
Manage device and the switching circuit break-make controlled according to the status information, when shown switching circuit conducting, the switching circuit according to
The power signal forms the second control command, and sends the second control command to the OR circuit.
Optionally, in the vehicle control device, the central processing unit is according to the status information to the switch
Circuit sends first state order, wherein：
When the power control unit sends the fault status information to the central processing unit, the first state life
It is low level signal to enable, the switching circuit conducting；
When the power control unit sends the normal state information to the central processing unit, the first state life
Enable is hanging level signal, the switching circuit on or off.
Optionally, in the vehicle control device, the switching circuit includes the first transistor, second transistor and
Three transistors, wherein：
The first transistor is diode, and the anode of the first transistor inputs the power signal；
The second transistor is triode, and the emitter of the second transistor connects the moon of the first transistor
The collector of pole, the second transistor connects the OR circuit, and the base stage of the second transistor connects the third crystalline substance
The anode of body pipe；
The third transistor is diode, and the cathode of the third transistor inputs the first state order.
Optionally, in the vehicle control device, the vehicle control device further includes pressure limiting circuit, wherein：The limit
Volt circuit controls the voltage magnitude of second control command.
Optionally, in the vehicle control device, the pressure limiting circuit includes a voltage-stabiliser tube, the anode of the voltage-stabiliser tube
Ground connection, the cathode of the voltage-stabiliser tube connect the collector of the second transistor.
Optionally, in the vehicle control device, the feedback circuit further includes sample circuit, wherein：Described second
Control command passes through the sample circuit, forms a sampled voltage signal, and the sample circuit sends out the sampled voltage signal
Give the power control unit.
Optionally, in the vehicle control device, the sample circuit includes first resistor and second resistance, wherein：
The first resistor connects the collector of the second transistor and the power control unit, described in the second resistance connection
Power control unit and ground.
Optionally, in the vehicle control device, the power control unit is also led to central processing unit transmission
Logical control information or shutdown control information.
Optionally, in the vehicle control device, the central processing unit controls information or shutdown according to the conducting
It controls information and sends the second status command to the switching circuit, wherein：
When the power control unit sends the conducting control information to the central processing unit, the second state life
It is low level signal to enable, the switching circuit conducting；
When the power control unit sends the shutdown control information to the central processing unit, the second state life
It is high level signal to enable, the switching circuit shutdown.
Optionally, in the vehicle control device, the switching circuit further includes the 4th transistor, which is characterized in that
The cathode of 4th transistor inputs the second status command, and the anode of the 4th transistor connects the second transistor
Base stage.
Optionally, in the vehicle control device, first control command inputs to the central processing unit,
In：
When first control command is high level signal, the central processing unit is to described in switching circuit transmission
First state order is hanging level signal, the switching circuit shutdown；
When first control command is low level signal, the central processing unit is to described in switching circuit transmission
First state order is low level signal, the switching circuit conducting.
Optionally, in the vehicle control device, the OR circuit includes first input end, the second input terminal and defeated
Outlet, wherein：
The first input end inputs the first control command, and second input terminal inputs the second control command, described defeated
Outlet out-put supply controls signal.
Optionally, in the vehicle control device, the vehicle control device further includes delay capacitor, the delay capacitor
Connect the OR circuit and the driving circuit.
The present invention also provides a kind of control method of vehicle control device, the control method of the vehicle control device includes：
Power control unit sends the first control command to OR circuit, and the OR circuit is ordered according to first control
It enables and forms a power control signal；
The OR circuit sends the power control signal to driving circuit, and the driving circuit is according to the power supply control
Signal processed forms a power signal；
The driving circuit sends the power signal to the feedback circuit；
The power control unit also sends the status information of its own, the central processing unit to the central processing unit
The feedback circuit break-make is controlled according to the status information；
When the feedback circuit conducting, the feedback circuit forms the second control command according to the power signal；
The feedback circuit sends second control command to the OR circuit, and the OR circuit is according to described the
Two control commands continue to output the power control signal.
Optionally, in the control method of the vehicle control device, the power control unit is to the central processing
Device sends the status information of its own：The power control unit to the central processing unit send fault status information or
Normal state information.
Optionally, in the control method of the vehicle control device, the central processing unit is according to the status information
Feedback control circuit break-make includes：The central processing unit controls the switching circuit break-make according to the status information, shown
When switching circuit is connected, the switching circuit forms the second control command according to the power signal, and to described or door
Circuit sends the second control command.
Optionally, in the control method of the vehicle control device, the central processing unit is according to the status information
Controlling the switching circuit break-make includes：
The central processing unit sends first state order according to the status information to the switching circuit；
When the power control unit sends the fault status information to the central processing unit, the first state life
It is low level signal to enable, the switching circuit conducting；
When the power control unit sends the normal state information to the central processing unit, the first state life
Enable is hanging level signal, the switching circuit on or off.
In vehicle control device provided by the invention and its control method, by the power control unit to described or door
Circuit sends the first control command, and when feedback circuit conducting, the second control command is sent to the OR circuit, it is described or
Gate circuit exports a power control signal according to first control command or second control command, realizes dual power supply control
The Redundant Control that power supply controls in the output of signal processed and vehicle control device, securely and reliably, feedback circuit is from the defeated of driving circuit
Outlet obtains power signal, is used as the source of the second control command, realizes the positive feedback of output and input, is not necessarily at this time
The control command of power control unit can also be such that the power control system of entire vehicle control device works normally.Further, institute
It states power control unit and sends status information to the central processing unit, the central processing unit is controlled according to the status information
The feedback circuit conducting, it follows that the conducting of feedback circuit is controlled by power control unit, i.e. the first control command
All it is to be controlled by power control unit, and central processing unit is that have component in vehicle control device with the second control command,
So the technical solution in the present invention actually only needs this control chip of power control unit, at low cost, system development letter
It is single, it not will produce the instruction conflict problem of dual power supply control chip, reliability is high.
Further, the present invention is by pressure limiting circuit, by the second control command voltage clamping, control the second control life
The voltage magnitude of order, then it is input to OR circuit, since the second input terminal of OR circuit only needs the voltage signal of 5V or so,
And after the tube voltage drop that power signal passes through second transistor, it is also possible to the second control command for forming 12V or so, if directly
It connects and is input to OR circuit, larger voltage energy can be caused to impact to OR circuit, if power signal is again due to outer
Portion interfere or output end energy accumulation and increase suddenly, be likely to result in the damage of OR circuit, therefore, the use of voltage-stabiliser tube
Clamper can be carried out to the second control command, protect OR circuit.In addition, delay capacitor connects the OR circuit and the driving
Circuit can also drop the mutation for the power control signal that OR circuit exports into line delay is gentle, protect the driving electricity of rear end
Road.
Further, the present invention can be to feedback circuit by the sample circuit in feedback circuit, power control unit
State is diagnosed, if the second control command fails normally to export, power control unit can make a response in time, start other and answer
Anxious prediction scheme.
In addition, the present invention controls information according to the conducting of power control unit by central processing unit or shutdown controls
Information sends the second status command to the switching circuit, can also control in normal state feedback circuit, at this point,
Power control unit can enter sleep state or power down mode, directly by the positive feedback effect of feedback circuit to entire power-supply system
It is controlled, the duration without power control unit exports, and only wakes up power control unit in emergency situations.
Finally, the present invention directly controls central processing unit by the first control command that power control unit exports, and works as electricity
When the control unit failure state of source, the first control command is low level, and OR circuit can not obtain from power control unit
The number of winning the confidence, but the first control command becomes low level to bring fault status signal, the centre to central processing unit automatically
The first state order that reason device is sent to the switching circuit is low level signal, the switching circuit conducting or door electricity
Road obtains signal from switching circuit, can save the exploitation of SPI communication agreement and reduce signal lead.
Description of the drawings
Fig. 1~2 are vehicle control device principle schematics of the present invention；
Fig. 3 is feedback circuit and OR circuit schematic diagram in vehicle control device of the present invention；
As shown in the figure：1- central processing units；2- power control units；3- feedback circuits；31- switching circuits；32- sampling electricity
Road；4- OR circuits；41- first input ends；The second input terminals of 42-；43- output ends；5- driving circuits；6- delay capacitors；7-
Load；8- pressure limiting circuits.
Specific implementation mode
Vehicle control device proposed by the present invention and its control method are made below in conjunction with the drawings and specific embodiments further
It is described in detail.According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that attached drawing
It is all made of very simplified form and uses non-accurate ratio, only to convenient, lucidly the aid illustration present invention is implemented
The purpose of example.
Core of the invention thought is to provide a kind of high reliability realization dual power supply control signal output, to realize electricity
The vehicle control device and its control method of source Redundant Control.
To realize above-mentioned thought, the present invention provides a kind of vehicle control device, the vehicle control device includes central processing
Device, power control unit, feedback circuit, OR circuit and driving circuit, wherein：The power control unit is electric to described or door
Road sends the first control command, and the OR circuit forms a power control signal according to first control command；It is described or
Gate circuit sends the power control signal to the driving circuit, and the driving circuit is formed according to the power control signal
One power signal；The driving circuit sends the power signal to the feedback circuit；The power supply control is single
Member also sends the status information of its own to the central processing unit, and the central processing unit controls institute according to the status information
State feedback circuit break-make；When the feedback circuit conducting, the feedback circuit forms the second control according to the power signal
System order；The feedback circuit sends second control command to the OR circuit, and the OR circuit is according to described the
Two control commands continue to output the power control signal.
<Embodiment one>
As shown in Figure 1, the present embodiment provides a kind of vehicle control device, the vehicle control device includes central processing unit 1, electricity
Source control unit 2, feedback circuit 3, OR circuit 4 and driving circuit 5, wherein：The power control unit 2 is electric to described or door
Road 4 sends the first control command KM1, and the OR circuit 4 forms a power control signal according to the first control command KM1
KM3；The OR circuit 4 sends the power control signal KM3 to the driving circuit 5, and the driving circuit 5 is according to described
Power control signal KM3 forms a power signal KM4, and is conveyed to load 6；The driving circuit 5 is electric to the feedback
Road 3 sends the power signal KM4；The power control unit 2 also sends the shape of its own to the central processing unit 1
State information ZT, the central processing unit 1 control 3 break-make of feedback circuit according to the status information ZT；The feedback circuit 3
When conducting, the feedback circuit 3 forms the second control command KM2 according to the power signal KM4, and electric to described or door
Road 4 sends the second control command KM2, and the OR circuit 4 continues to output the power supply control according to the second control command KM2
Signal KM3 processed.
In vehicle control device provided in this embodiment, sent to the OR circuit 4 by the power control unit 2
When the feedback circuit 3 is connected, the second control command KM2 is sent to the OR circuit 4 by first control command KM1, it is described or
Gate circuit 4 exports a power control signal KM3 according to second control commands of the first control command KM1 or described KM2, realizes
The Redundant Control that power supply controls in the output of dual power supply control signal and vehicle control device, securely and reliably, feedback circuit 3 from
The output end of driving circuit 5 obtains power signal KM4, is used as the source of the second control command KM2, realize output with it is defeated
The positive feedback entered, the power control system of entire vehicle control device can also be made by being not necessarily to the control command of power control unit 2 at this time
Normal work.Further, the power control unit 2 sends status information ZT, the centre to the central processing unit 1
It manages device 1 and the conducting of feedback circuit 3 is controlled according to the status information ZT, it follows that the conducting of feedback circuit 3 is by power supply
What control unit 2 controlled, i.e. the first control command KM1 and the second control command KM2 are controlled by power control unit 2,
And central processing unit 1 is that have component in vehicle control device, so the technical solution in the present invention actually only needs power supply control
This control chip of unit 2 processed, at low cost, system development is simple, and the instruction conflict that not will produce dual power supply control chip is asked
Topic, reliability are high.
Further, the status information that the power control unit 2 is sent to the central processing unit 1 includes malfunction
Information or normal state information.As shown in figure 3, the feedback circuit 3 includes switching circuit 31, wherein：The central processing unit 1
31 break-make of switching circuit is controlled according to the status information ZT, when shown switching circuit 31 is connected, the switching circuit 31
The second control command KM2 is formed according to the power signal KM4, and the second control command is sent to the OR circuit 4
KM2.The central processing unit 1 sends first state order ZM1 according to the status information ZT to the switching circuit 31,
In：When the power control unit 2 sends the fault status information to the central processing unit 1, the first state order
ZM1 is low level signal, and the switching circuit 31 is connected；The power control unit 2 sends described to the central processing unit 1
When normal state information, the first state order ZM1 is hanging level signal, and the state of the switching circuit 31 is can not be true
Fixed, it may be possible on or off.
In addition, the power control unit 2 also sends control information KX to the central processing unit 1, information KX packets are controlled
Include conducting control information or shutdown control information.The central processing unit 2 controls information or shutdown control letter according to the conducting
It ceases to the switching circuit 31 and sends the second status command ZM2, wherein：The power control unit 2 is to the central processing unit 1
When sending the conducting control information, the second status command ZM2 is low level signal, and the switching circuit 31 is connected；Institute
When stating power control unit 2 and sending the shutdown to the central processing unit 1 and control information, the second status command ZM2 is
High level signal, the switching circuit 31 turn off.That is, ZM1 and ZM2 simultaneously control switching circuit 31 conducting and/
Or shutdown, it is of course also possible to not increase KX and ZM2 this functionalities, and switching circuit 31 is only controlled by ZM1.
Specifically, the switching circuit includes the first transistor M1, second transistor M2, the crystalline substances of third transistor M3 and the 4th
Body pipe M4, wherein：The first transistor M1 is diode, and the anode of the first transistor M1 inputs the power letter
Number, the effect of the first transistor M1 is one-way conduction, and power signal KM4 is made unidirectionally to be input in switching circuit 31, protection
Switching circuit 31 and driving circuit 5；The second transistor M2 is triode, and the emitter of the second transistor M2 connects institute
The cathode of the first transistor M1 is stated, the collector of the second transistor M2 connects the OR circuit 4, the second transistor
The base stage of M2 connects the anode of the third transistor M3 and the 4th transistor M4；The third transistor M3 and the 4th transistor
M4 is diode, and the cathode of third transistor M3 inputs the first state order ZM1, the cathode input of the 4th transistor M4
Second status command ZM2, the effect of the two is also identical, i.e. there are one be in first state order ZM1 and the second status command ZM2
Low level, you can make second transistor M2 be connected, power signal KM4 passes through the first transistor M1, then by second transistor
The emitter of M2 flows to collector, eventually forms the second control command KM2, is conveyed to OR circuit 4.
The present embodiment controls information according to the conducting of power control unit 2 by central processing unit 1 or shutdown controls
Information sends the second status command ZM2 to the switching circuit 31, can also control in normal state feedback circuit 3,
At this point, power control unit 2 can enter sleep state or power down mode, directly by the positive feedback effect of feedback circuit 3 to entire
Power-supply system is controlled, and the duration without power control unit 2 exports, and only wakes up power control unit in emergency situations
2.
In addition, also having the technical solution different from said program, as shown in Fig. 2, the first control command KM1 is inputed to
The central processing unit 1, wherein：When the first control command KM1 is high level signal, the central processing unit 1 is to described
The first state order ZM1 that switching circuit 31 is sent is hanging level signal, and the switching circuit 31 turns off；Described first
When control command KM1 is low level signal, the first state that the central processing unit 1 is sent to the switching circuit 31 is ordered
It is low level signal to enable ZM1, the switching circuit conducting.The first control command that this programme is exported by power control unit 2
KM1 directly controls central processing unit 1, and when 2 failure state of power control unit, the first control command KM1 is low level,
OR circuit 4 can not obtain signal from power control unit 2, but the first control command KM1 become low level can be automatically in
Central processor 1 brings fault status signal, the first state life that the central processing unit 1 is sent to the switching circuit 31
It is low level signal to enable ZM1, and the switching circuit 31 is connected, and OR circuit 4 obtains signal from switching circuit 31, can save
The exploitation of SPI communication agreement and reduction signal lead.
In addition, the OR circuit 4 includes first input end 41, the second input terminal 42 and output end 43, wherein：Described
One input terminal 41 input the first control command KM1, second input terminal 42 input the second control command KM2, the output end
43 out-put supplies control signal KM3.
Further, as shown in figure 3, the vehicle control device further includes pressure limiting circuit 8, wherein：The pressure limiting circuit 8 is controlled
Make the voltage magnitude of the second control command KM2.The power signal KM4 passes through the second transistor M2, is formed
Second control command KM2 clampers are sent to OR circuit 4 by the second control command KM2, the pressure limiting circuit 8.The pressure limiting
Circuit 8 includes a voltage-stabiliser tube M5, and the cathode of the plus earth of the voltage-stabiliser tube M5, the voltage-stabiliser tube M5 connects second crystal
Second control command KM2 voltage clampings are controlled the second control command KM2 by the collector of pipe M2 by pressure limiting circuit 8
Voltage magnitude, then OR circuit 4 is input to, since the second input terminal 42 of OR circuit 4 only needs the voltage of 5V or so to believe
Number, and after tube voltage drops of the power signal KM4 by second transistor M2, it is also possible to form the second control of 12V or so
Order KM2 can cause larger voltage energy to impact, if power supply work(if being directly inputted to OR circuit 4 to OR circuit 4
Rate signal KM4 is increased due to the energy accumulation of external disturbance or output end suddenly again, is likely to result in the damage of OR circuit 4
Bad, therefore, the use of voltage-stabiliser tube M5 can carry out clamper to the second control command KM2, protect OR circuit 4.
Meanwhile the feedback circuit 3 further includes sample circuit 32, wherein：Second control command passes through the sampling
Circuit 32, forms a sampled voltage signal CY, and the sampled voltage signal CY is sent to the power supply by the sample circuit 32
Control unit 2.The sample circuit 32 includes first resistor R1 and second resistance R2, wherein：First resistor R1 connections institute
State the collector and the power control unit 2 of second transistor M2, the second resistance R2 connections power control unit 2
The ground and.By the sample circuit 32 in feedback circuit 3, power control unit 2 can diagnose the state of feedback circuit 3, if
Second control command fails normally to export, and power control unit 2 can make a response in time, starts other emergency preplans.
Finally, the vehicle control device further includes delay capacitor 6, and the delay capacitor 6 connects the OR circuit 4 and institute
Driving circuit 5 is stated, the mutation for the power control signal KM3 that OR circuit 4 exports can also be dropped into line delay is gentle, after protection
The driving circuit 5 at end.
<Embodiment two>
The present embodiment provides a kind of control method of vehicle control device, the control method of the vehicle control device includes：Electricity
Source control unit 2 sends the first control command KM1 to OR circuit 4, and the OR circuit 4 is according to first control command
KM1 forms a power control signal KM3；The OR circuit 4 sends the power control signal KM3 to driving circuit 5, described
Driving circuit 5 forms a power signal KM4 according to the power control signal KM3, and is conveyed to load 6；The driving
Circuit 5 sends the power signal KM4 to feedback circuit 3；The power control unit 2 is also sent to central processing unit 1
The status information ZT of its own, the central processing unit 1 control 3 break-make of feedback circuit according to the status information ZT；Institute
When stating the conducting of feedback circuit 3, the feedback circuit 3 forms the second control command KM2 according to the power signal KM4, and
The second control command KM2 is sent to the OR circuit 4, the OR circuit 4 continues defeated according to the second control command KM2
Go out the power control signal KM3.
Specifically, the power control unit 2 is to the transmission of central processing unit 1, the status information ZT of its own includes：It is described
Power control unit 2 sends fault status information or normal state information to the central processing unit 1.The central processing unit 1
Include according to 3 break-make of status information ZT feedback control circuits：The central processing unit 1 is controlled according to the status information ZT
31 break-make of the switching circuit, when shown switching circuit 31 is connected, the switching circuit 31 is according to the power signal KM4
The second control command KM2 is formed, and the second control command KM2 is sent to the OR circuit 4.1 basis of the central processing unit
The status information ZT controls 31 break-make of switching circuit：The central processing unit 1 according to the status information ZT to
The switching circuit 31 sends first state order ZM1；The power control unit 2 sends described to the central processing unit 1
When fault status information, the first state order ZM1 is low level signal, and the switching circuit 31 is connected；The power supply control
When unit 2 processed sends the normal state information to the central processing unit 1, the first state order ZM1 is hanging level
Signal, 31 on or off of the switching circuit.
In the control method of vehicle control device provided in this embodiment, by the power control unit 2 to described or
Gate circuit 4 sends the first control command KM1, and when the feedback circuit 3 is connected, the second control life is sent to the OR circuit 4
KM2, the OR circuit 4 is enabled to export a power supply according to second control commands of the first control command KM1 or described KM2 and control
Signal KM3, realize dual power supply control signal output and vehicle control device in power supply control Redundant Control, securely and reliably,
Feedback circuit 3 obtains power signal KM4 from the output end of driving circuit 5, is used as the source of the second control command KM2,
Realize the positive feedback of output and input, entire vehicle control device can also be made by being not necessarily to the control command of power control unit 2 at this time
Power control system works normally.Further, the power control unit 2 sends status information to the central processing unit 1
ZT, the central processing unit 1 controls the feedback circuit 3 according to the status information ZT and is connected, it follows that feedback circuit 3
Conducting controlled by power control unit 2, i.e. the first control command KM1 and the second control command KM2 are by power supply control
Unit 2 processed is controlled, and central processing unit 1 is that have component in vehicle control device, so the technical solution in the present invention is real
Border only needs this control chip of power control unit 2, and at low cost, system development is simple, not will produce dual power supply control core
The instruction conflict problem of piece, reliability are high.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment
For, due to corresponding to the methods disclosed in the examples, so description is fairly simple, related place is referring to method part illustration
?.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (19)
1. a kind of vehicle control device, which is characterized in that the vehicle control device includes central processing unit, power control unit, anti-
Current feed circuit, OR circuit and driving circuit, wherein：
The power control unit sends the first control command to the OR circuit, and the OR circuit is controlled according to described first
System order forms a power control signal；
The OR circuit sends the power control signal to the driving circuit, and the driving circuit is according to the power supply control
Signal processed forms a power signal；
The driving circuit sends the power signal to the feedback circuit；
The power control unit also sends the status information of its own to the central processing unit, the central processing unit according to
The status information controls the feedback circuit break-make；
When the feedback circuit conducting, the feedback circuit forms the second control command according to the power signal；
The feedback circuit sends second control command to the OR circuit, and the OR circuit is controlled according to described second
System order continues to output the power control signal.
2. vehicle control device as described in claim 1, which is characterized in that the status information includes fault status information or just
Normal status information.
3. vehicle control device as claimed in claim 2, which is characterized in that the feedback circuit includes switching circuit, wherein：Institute
It states central processing unit and the switching circuit break-make is controlled according to the status information, when shown switching circuit is connected, the switch
Circuit forms the second control command according to the power signal, and sends the second control command to the OR circuit.
4. vehicle control device as claimed in claim 3, which is characterized in that the central processing unit according to the status information to
The switching circuit sends first state order, wherein：
When the power control unit sends the fault status information to the central processing unit, the first state order is
Low level signal, the switching circuit conducting；
When the power control unit sends the normal state information to the central processing unit, the first state order is
Hanging level signal, the switching circuit on or off.
5. vehicle control device as claimed in claim 4, which is characterized in that the switching circuit includes the first transistor, second
Transistor and third transistor, wherein：
The first transistor is diode, and the anode of the first transistor inputs the power signal；
The second transistor is triode, and the emitter of the second transistor connects the cathode of the first transistor, institute
The collector for stating second transistor connects the OR circuit, and the base stage of the second transistor connects the third transistor
Anode；
The third transistor is diode, and the cathode of the third transistor inputs the first state order.
6. vehicle control device as claimed in claim 5, which is characterized in that the vehicle control device further includes pressure limiting circuit,
In：The pressure limiting circuit controls the voltage magnitude of second control command.
7. vehicle control device as claimed in claim 6, which is characterized in that the pressure limiting circuit includes a voltage-stabiliser tube, described steady
The plus earth of pressure pipe, the cathode of the voltage-stabiliser tube connect the collector of the second transistor.
8. vehicle control device as claimed in claim 5, which is characterized in that the feedback circuit further includes sample circuit, wherein：
Second control command passes through the sample circuit, forms a sampled voltage signal, and the sample circuit is electric by the sampling
Pressure signal is sent to the power control unit.
9. vehicle control device as claimed in claim 8, which is characterized in that the sample circuit includes first resistor and the second electricity
Resistance, wherein：The first resistor connects the collector of the second transistor and the power control unit, the second resistance
Connect the power control unit and ground.
10. vehicle control device as claimed in claim 5, which is characterized in that the power control unit is also to the centre
It manages device and sends conducting control information or shutdown control information.
11. vehicle control device as claimed in claim 10, which is characterized in that the central processing unit is controlled according to the conducting
Information or shutdown control information send the second status command to the switching circuit, wherein：
When the power control unit sends the conducting control information to the central processing unit, second status command is
Low level signal, the switching circuit conducting；
When the power control unit sends the shutdown control information to the central processing unit, second status command is
High level signal, the switching circuit shutdown.
12. vehicle control device as claimed in claim 11, which is characterized in that the switching circuit further includes the 4th transistor,
It is characterized in that, the 4th transistor cathode input the second status command, the 4th transistor anode connection described in
The base stage of second transistor.
13. vehicle control device as claimed in claim 3, which is characterized in that first control command inputs to the center
Processor, wherein：
First control command be high level signal when, the central processing unit sent to the switching circuit described first
Status command is hanging level signal, the switching circuit shutdown；
First control command be low level signal when, the central processing unit sent to the switching circuit described first
Status command is low level signal, the switching circuit conducting.
14. vehicle control device as claimed in claim 5, which is characterized in that the OR circuit includes first input end, second
Input terminal and output end, wherein：
The first input end inputs the first control command, and second input terminal inputs the second control command, the output end
Out-put supply controls signal.
15. the vehicle control device as described in any one of claim 1~14, which is characterized in that the vehicle control device also wraps
Delay capacitor is included, the delay capacitor connects the OR circuit and the driving circuit.
16. a kind of control method of vehicle control device, which is characterized in that the control method of the vehicle control device includes：
Power control unit sends the first control command to OR circuit, and the OR circuit is according to the first control command shape
At a power control signal；
The OR circuit sends the power control signal to driving circuit, and the driving circuit is controlled according to the power supply to be believed
Number formed a power signal；
The driving circuit sends the power signal to the feedback circuit；
The power control unit also sends the status information of its own to the central processing unit, the central processing unit according to
The status information controls the feedback circuit break-make；
When the feedback circuit conducting, the feedback circuit forms the second control command according to the power signal；
The feedback circuit sends second control command to the OR circuit, and the OR circuit is controlled according to described second
System order continues to output the power control signal.
17. the control method of vehicle control device as claimed in claim 16, which is characterized in that the power control unit is to institute
It states central processing unit and sends the status information of its own and include：The power control unit sends failure to the central processing unit
Status information or normal state information.
18. the control method of vehicle control device as claimed in claim 17, which is characterized in that the central processing unit is according to institute
Stating status information feedback control circuit break-make includes：The central processing unit controls the switching circuit according to the status information
Break-make, when the conducting of shown switching circuit, the switching circuit forms the second control command according to the power signal, and to
The OR circuit sends the second control command.
19. the control method of vehicle control device as claimed in claim 18, which is characterized in that the central processing unit is according to institute
Stating the status information control switching circuit break-make includes：
The central processing unit sends first state order according to the status information to the switching circuit；
When the power control unit sends the fault status information to the central processing unit, the first state order is
Low level signal, the switching circuit conducting；
When the power control unit sends the normal state information to the central processing unit, the first state order is
Hanging level signal, the switching circuit on or off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710302129.1A CN108803399B (en) | 2017-05-02 | 2017-05-02 | Vehicle controller and control method thereof |
| PCT/CN2018/085014 WO2018201995A1 (en) | 2017-05-02 | 2018-04-28 | Vehicle controller and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710302129.1A CN108803399B (en) | 2017-05-02 | 2017-05-02 | Vehicle controller and control method thereof |
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| CN108803399A true CN108803399A (en) | 2018-11-13 |
| CN108803399B CN108803399B (en) | 2024-03-19 |
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| CN201710302129.1A Active CN108803399B (en) | 2017-05-02 | 2017-05-02 | Vehicle controller and control method thereof |
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| WO (1) | WO2018201995A1 (en) |
Cited By (1)
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| CN111240237A (en) * | 2020-01-09 | 2020-06-05 | 水利部南京水利水文自动化研究所 | Measurement and control integrated gate device and measurement and control method |
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| WO2018201995A1 (en) | 2018-11-08 |
| CN108803399B (en) | 2024-03-19 |
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