CN104369732B - Controlling alarm managing device for electric automobile force aid system - Google Patents
Controlling alarm managing device for electric automobile force aid system Download PDFInfo
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- CN104369732B CN104369732B CN201410604670.4A CN201410604670A CN104369732B CN 104369732 B CN104369732 B CN 104369732B CN 201410604670 A CN201410604670 A CN 201410604670A CN 104369732 B CN104369732 B CN 104369732B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
- B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems
- B60T17/223—Devices for pressurising brake systems acting on pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of controlling alarm managing device for electric automobile force aid system, belonging to electric vehicle brake power-assisted field of vacuum, the present invention includes the pressure transducer being arranged in vacuum air storage tank, processor, supply module, brake signal conversion module, sound and light alarm module, drives module and current sampling module.The present invention compares the drive circuit that existing employing relay drives, and service life is longer, and reliability is higher.The pressure state of vacuum system is indicated by the present invention by sound, light, allow driver that the duty of brake power-assisted to be predicted in advance, vehicle driving safety is made to improve further, the pressure transducer of vacuum system and vacuum pump can also be detected by the present invention, obvious sound and light alarm can be given during fault, improve the safety of braking.
Description
Technical field
The invention belongs to electric vehicle brake power-assisted field of vacuum, particularly relate to a kind of for electric automobile power-assisted system
The controlling alarm managing device of system.
Background technology
Electric automobile is when being braked vehicle at present, all have employed power-assisted vacuum system and helps manual braking, makes people
Strength of one's legs sensation brake nature is light, if vacuum boost system there is a problem during vehicle travels, brakes, people can be allowed to produce
Raw brake without sensation, make the sensation brake of people's strength of one's legs the heaviest, without brake nature operation feeling easily usually,
Safety problem then may be brought if in higher speed or long descending.
Summary of the invention
Because the drawbacks described above of prior art, it is higher that the technical problem to be solved is to provide a kind of reliability
Brake boosting vacuum pump control device.
For achieving the above object, the invention provides a kind of controlling alarm for electric automobile force aid system and manage dress
Put, including the pressure transducer being arranged in vacuum air storage tank, processor, supply module, brake signal conversion module, acousto-optic report
Alert module, drives module and current sampling module；
The power input of described pressure transducer is connected with the outfan of described supply module, the simulation of pressure transducer
Signal output part is connected with the A/D signal input part of processor, the outfan of described brake signal conversion module and described process
The brake signal input of device connects, and the input of supply module is connected with the DC low-voltage 12V outfan on car, supply module
Outfan be connected with the power supply side of processor, the first alarm signal output ends of described processor and sound and light alarm module
Light warning input connect, the acoustic alarm input of the second alarm signal output ends of processor and sound and light alarm module is even
Connecing, the signal output part that drives of processor is connected with the driving signal input driving module, drives the vacuum pump work of module
Current output terminal is connected with the input of current sampling module, and the vacuum pump operating current detection input of processor takes with electric current
The outfan of original mold block connects, the power supply input equal ground connection of negative pole end of each module.
It is also preferred that the left described supply module includes three terminal regulator, the first resistance, the first electric capacity, the second electric capacity and the 3rd electricity
Hold；Described first resistance one end is connected with the 12V power output end of vehicle low-voltage power supply system, the other end and three terminal regulator
Input connects, and the input of described three terminal regulator is respectively by the second electric capacity, the 3rd capacity earth, described three terminal regulator
Outfan by the outfan output positive voltage of the first capacity earth and described three terminal regulator give described pressure transducer and
Processor.Use above technical scheme, it is possible to for the working power that the interlock circuit offer of this controller is stable, it is ensured that this device
Can continually and steadily and run under the Power Supplies Condition of safety.
When brake pedal is stepped on, the 12V on car is connected and lights brake taillight by brake switch K1 Guan Bi, and the brake of 12V
If voltage is applied directly on processor, by break treat with device, for protection processor input interface, described brake signal conversion mould
Block includes brake switch, the second resistance, the 3rd resistance, Zener diode and the 4th electric capacity；One end of described brake switch and car
The 12V power end of low-voltage power supply system connects, one end connection of the other end of described brake switch and the second resistance, and described the
The other end of two resistance is respectively by the 3rd resistance, Zener diode and the 4th capacity earth；Wherein said second resistance is with steady
The negative pole of pressure diode connects.
It is also preferred that the left in order to report to the police when different faults occurs in vacuum boost system, described sound and light alarm module
Including buzzer, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, light emitting diode,
First audion and the second audion, one end of one end of described buzzer and the 4th resistance after connecting and vehicle low-voltage power supply system
The 12V power end of system connects, and the other end of described buzzer and one end of the 9th resistance connect, the other end of described 9th resistance
Being connected with the colelctor electrode of the second audion, the grounded emitter of described second audion, the base stage of described second audion is passed through
8th resistance eutral grounding, the base stage of the second audion is connected with one end of the 7th resistance, and the other end of the 7th resistance is that acoustic alarm is defeated
Enter end；The other end of the 4th resistance is connected with the positive pole of light emitting diode, the negative pole of light emitting diode and the collection of the first audion
Electrode connects, the grounded emitter of the first audion, and the base stage of the first audion passes through the 6th resistance eutral grounding, the first audion
Base stage is connected with one end of the 5th resistance, and the other end of the 5th resistance is light warning input.
It is also preferred that the left described driving module by the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the 14th
Resistance, the 15th resistance, the 16th resistance, the 3rd diode, the 4th diode, the 3rd audion, the 4th audion, the five or three
Pole pipe, the 6th audion and field effect transistor are constituted, and wherein one end of the tenth resistance is the input driving module, the tenth resistance
By the 11st resistance eutral grounding after the base stage connection of the other end and the 3rd audion, the grounded emitter of the 3rd audion, described
One end of the colelctor electrode of the 3rd audion and the 12nd resistance connect after again base stage with the 4th audion be connected, the described 12nd
The other end of resistance and the colelctor electrode of the 4th audion are connected with the 12V power end from vehicle again after connecting, and the described 4th 3
The emitter stage of pole pipe and the base stage of the 5th audion pass through the 13rd resistance eutral grounding, the colelctor electrode of described 5th audion after connecting
It is connected on the 12V power end of vehicle, by the after the emitter stage of described 5th audion and the 6th transistor emitter parallel connection
15 resistance eutral groundings, the base stage of the 5th audion is in parallel with the base stage of the 6th audion, and the emitter stage of the 6th audion is by the
14 resistance are connected with the grid of field effect transistor, and the drain electrode of described field effect transistor is connected with the negative pole of the 3rd diode, described field
The drain electrode of effect pipe is connected with the 12V power end of vehicle by vacuum pump and the 4th diode respectively, the source of described field effect transistor
Pole is connected with described 3rd diode cathode, and the described negative pole of the 3rd diode is connected with the drain electrode of described field effect transistor, described
The source electrode of field effect transistor passes through the 16th resistance eutral grounding.Using above technical scheme, the present invention can control vacuum pump more accurately
Startup and stopping.
It is also preferred that the left for the work and the stopping that detecting vacuum pump, described current sampling module by the 17th resistance, the 18th
Resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 5th electric capacity and comparator are constituted, described 17th resistance
One end is the input of current sampling module, and the other end of described 17th resistance and the positive pole of the 5th electric capacity connect, described ratio
The in-phase end of relatively device passes sequentially through the 18th resistance and described 5th capacity earth, the end of oppisite phase of described comparator and the described tenth
Described 20th resistance eutral grounding is passed through after connecting in one end of nine resistance, and the other end of described 19th resistance is defeated with supply module
Going out end to connect, the outfan of described comparator passes through the 21st resistance eutral grounding, and the outfan of described comparator is current sampling
The outfan of module, the negative power end ground connection of described comparator, the positive power source terminal of described comparator is defeated with described supply module
Go out end to connect.Using above technical scheme, the present invention can detect work and the stopping of vacuum pump more accurately.
The invention has the beneficial effects as follows: the present invention compares the drive circuit that existing employing relay drives, service life
Longer, reliability is higher.The pressure state of vacuum system is indicated by the present invention by sound, light, allows driver to brake power-assisted
Duty is predicted in advance, makes vehicle driving safety improve further, the present invention can also to the pressure transducer of vacuum system and
Vacuum pump detects, and can provide obvious sound and light alarm, improve the safety of braking during fault.
Accompanying drawing explanation
Fig. 1 is the catenation principle schematic block diagram of the present invention.
Fig. 2 is the circuit diagram of supply module of the present invention.
Fig. 3 is the circuit diagram of brake signal conversion module of the present invention.
Fig. 4 is the circuit diagram of sound and light alarm module of the present invention.
Fig. 5 is the circuit diagram that the present invention drives module.
Fig. 6 is the circuit diagram of current sampling module of the present invention.
Fig. 7 is present invention circuit diagram when using.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As shown in Figures 1 to 7, a kind of controlling alarm managing device for electric automobile force aid system, including being arranged on
Pressure transducer 1 in vacuum air storage tank, processor 2, supply module 3, brake signal conversion module 4, sound and light alarm module 5,
Drive module 6 and current sampling module 7.
The power input of described pressure transducer 1 is connected with the outfan of described supply module 3, pressure transducer 1
Analog signal output is connected with the A/D signal input part of processor 2, the outfan of described brake signal conversion module 4 and institute
The brake signal input stating processor 2 connects, and the input of supply module 3 is connected with the DC low-voltage 12V outfan on car,
The outfan of supply module 3 is connected with the power supply side of processor 2, the first alarm signal output ends of described processor 2 with
The light warning input of sound and light alarm module 5 connects, the second alarm signal output ends of processor 2 and sound and light alarm module 5
Acoustic alarm input connects, and the signal output part that drives of processor 2 is connected with the driving signal input driving module 6, drives
The vacuum pump operating current outfan of module 6 is connected with the input of current sampling module 7, the vacuum pump work electricity of processor 2
Stream detection input is connected with the outfan of current sampling module 7, the power supply input equal ground connection of negative pole end of each module.
In the present embodiment, processor is by chip microcontroller, and it is true that processor detects that pressure transducer 1 output terminals A 1 is sent here
During pressure upper limit 45KPa kPa of the pressure >=permission of slack tank, the driving signal output part A10 output low level signal of processor
Giving and drive module 6, drive module 6 to be transferred to conducting by cut-off, vacuum pump obtains electric work, and the pressure of vacuum tank is bled along with vacuum pump
Carrying out, pressure constantly reduces.Processor by pressure transducer 1 detect the pressure of vacuum tank be reduced to≤25KPa time, place
The driving signal output part A10 output high level signal of reason device is given and is driven module 6, drives module 6 to be proceeded to cut-off, vacuum by conducting
Pump dead electricity and quit work.
When in vehicle traveling, driver's foot touches on the brake, after brake switch K1 connects 12V, one side lights brake taillight instruction to be had
Brake, 12V voltage transformation is 3.3V voltage by brake signal conversion module 4 by another side, and by output terminals A 17 to processor
Brake signal input A16 send into brake signal, after the brake signal that processor receives, according to now pressure transducer 1
The pressure condition of the vacuum tank that output terminals A 1 is sent here, if the pressure >=35KPa of vacuum tank, processor is due to the pressure of vacuum tank
Can consume during brake, enough for ensureing the pressure of brake final vacuum tank, it is provided with this control method.Output low level signal is driven
Dynamic model block 6, drive module 6 controlled after start vacuum pump work, until processor detect the pressure of vacuum tank be reduced to≤
During 25KPa, vacuum pump is the most controlled to quit work.
When vacuum boost system breaks down, including following three kinds of situations:
1, after processor controls to drive module 6 to make vacuum pump have passed through the work of continuous 40S clock, survey pressure transducer 1
The pressure also ＞ 25KPa obtaining vacuum tank does not the most use brake, illustrates that vacuum air storage tank and pipeline leak air, causes vacuum
Lengthy pressure works continuously and is all unsatisfactory for≤the halt condition of 25KPa, and now processor uses 2 by light warning input A7
The optical flare alarm vacuum pump not machine halt trouble of secondary/S, under vacuum pump not machine halt trouble, processor is obtaining startup very
After the signal of empty pump work, work again according to vacuum pump work 40S, shutdown 20S in the loop control of 40S.
2, after processor output vacuum pump working signal, by driving the vacuum pump operating current feedback end A15 of module 6 not have
There is the operating current receiving vacuum pump, now pressure transducer 1 is also not detected by vacuum air storage tank within the 5S time
Pressure changes, and illustrates to drive module 6 or vacuum pump to break down, and now processor is respectively by light warning output terminals A 7 harmony
Warning output terminals A 9, uses the optical flare warning harmony alarm vacuum pump not job failure of 2 times/S.
3, after processor output vacuum pump working signal, by driving the vacuum pump operating current feedback end A15 of module 6 to connect
Have received the operating current of vacuum pump, now pressure transducer 1 was also not detected by within the 5S time pressure of vacuum air storage tank
Power changes, and illustrates that pressure transducer 1 does not works or damages, now processor acoustic alarm output terminals A 8, uses the sound report of 2 times/S
Alert prompting pressure transducer 1 does not works or damages fault.
Described supply module 3 includes three terminal regulator V1, the first resistance R6, the first electric capacity C1, the second electric capacity C2 and the 3rd
Electric capacity C3.Described first resistance R6 one end is connected with the 12V power output end of vehicle low-voltage power supply system, and the other end and three ends are steady
The input of depressor V1 connects, and the input of described three terminal regulator V1 passes through the second electric capacity C2, the 3rd electric capacity C3 ground connection respectively,
The outfan of the described three terminal regulator V1 outfan output positive electricity by the first electric capacity C1 ground connection and described three terminal regulator V1
Pressure is to described pressure transducer 1 and processor 2.Pressure stabilization function by supply module 3, it is possible to the interlock circuit for the present invention carries
For stable working power, it is ensured that this device can continually and steadily and run under the Power Supplies Condition of safety.
Described brake signal conversion module 4 includes brake switch K1, the second resistance R1, the 3rd resistance R2, Zener diode
D1 and the 4th electric capacity C4.One end of described brake switch K1 is connected with the 12V power end of vehicle low-voltage power supply system, described brake
The other end of switch K1 and one end of the second resistance R1 connect, and the other end of described second resistance R1 is respectively by the 3rd resistance
R2, Zener diode D1 and the 4th electric capacity C4 ground connection.The negative pole of wherein said second resistance R1 and Zener diode D1 is connected.Car
In travelling, driver's foot is when touching on the brake, and after brake switch K1 connects 12V power supply, one side lights brake taillight instruction brake,
12V voltage transformation is the burning voltage of 3.3V by current-limiting resistance R1 and Zener diode D1 by another side, and by output terminals A 17
Brake voltage after the brake signal input A16 of processor sends into conversion, i.e. reaches to protect the electricity of single-chip microcomputer input interface
Pressure safety, reaches again to be fed into the purpose of brake signal to single-chip microcomputer input port.
Described sound and light alarm module 5 includes buzzer L1, the 4th resistance R3, the 5th resistance R4, the 6th resistance R5, the 7th electricity
Resistance R19, the 8th resistance R20, the 9th resistance R21, light emitting diode D2, the first audion Q1 and the second audion Q7, described honeybee
One end of one end and the 4th resistance R3 of ring device L1 connecting is connected with the 12V power end of vehicle low-voltage power supply system afterwards, described honeybee
One end connection of the other end and the 9th resistance R21 of ring device L1, the other end of described 9th resistance R21 and the second audion Q7's
Colelctor electrode connects, the grounded emitter of described second audion Q7, and the base stage of described second audion Q7 passes through the 8th resistance R20
Ground connection, the base stage of the second audion Q7 is connected with one end of the 7th resistance R19, and the other end of the 7th resistance R19 is that acoustic alarm is defeated
Enter end.The other end of the 4th resistance R3 is connected with the positive pole of light emitting diode D2, the negative pole of light emitting diode D2 and the one or three pole
The colelctor electrode of pipe Q1 connects, and the grounded emitter of the first audion Q1, the base stage of the first audion Q1 is connect by the 6th resistance R5
Ground, the base stage of the first audion Q1 is connected with one end of the 5th resistance R4, and the other end of the 5th resistance R4 is light warning input.
After the visual alarm of processor arrives light warning input A7, if the signal that light warning input A7 obtains
For high level, the first audion Q1 colelctor electrode saturation conduction, light emitting diode D2 obtains electroluminescence；If light warning input A7 obtains
To signal be low level, first audion Q1 collector cut-off disconnect, light emitting diode D2 without electricity extinguish.
After the acoustic alarm signal of processor arrives acoustic alarm input A9, if the signal that acoustic alarm input A9 obtains
For high level, audion Q7 colelctor electrode saturation conduction, buzzer L1 obtains electric sounding；If the signal that acoustic alarm input A9 obtains
For low level, audion Q7 collector cut-off disconnects, and buzzer L1 is noiseless without electricity, and sound and light alarm frequency is processor controlled.
Described driving module 6 by the tenth resistance R7, the 11st resistance R8, the 12nd resistance R9, the 13rd resistance R10,
14 resistance R11, the 15th resistance R12, the 16th resistance R13, the 3rd diode D4, the 4th diode D3, the 3rd audion
Q2, the 4th audion Q3, the 5th audion Q4, the 6th audion Q5 and field effect transistor Q6 are constituted, wherein the one of the tenth resistance R7
End is for driving the input of module, and the other end of the tenth resistance R7 and the base stage of the 3rd audion Q2 pass through the 11st electricity after connecting
Resistance R8 ground connection, the grounded emitter of the 3rd audion Q2, the colelctor electrode and the one of the 12nd resistance R9 of described 3rd audion Q2
End connect after again base stage with the 4th audion Q3 be connected, the other end of described 12nd resistance R9 and the collection of the 4th audion Q3
Electrode is connected with the 12V power end from vehicle again after connecting, the emitter stage of described 4th audion Q3 and the 5th audion Q4
Base stage connect after by the 13rd resistance R10 ground connection, the colelctor electrode of described 5th audion Q4 is connected to the 12V power supply of vehicle
On end, by the 15th resistance R12 ground connection after the emitter stage of described 5th audion Q4 and the 6th audion Q5 emitter stage parallel connection,
The base stage of the 5th audion Q4 is in parallel with the base stage of the 6th audion Q5, and the emitter stage of the 6th audion Q5 passes through the 14th resistance
R11 is connected with the grid of field effect transistor Q6, and the drain electrode of described field effect transistor Q6 is connected with the negative pole of the 3rd diode D4, described field
The drain electrode of effect pipe Q6 is connected with the 12V power end of vehicle by vacuum pump M1 and the 4th diode D3 respectively, described field effect
The source electrode of pipe Q6 is connected with described 3rd diode D4 positive pole, the negative pole of described 3rd diode D4 and described field effect transistor Q6
Drain electrode connects, and the source electrode of described field effect transistor Q6 passes through the 16th resistance R13 ground connection.
When processor is to the input A11 output low level of driving module 6, the base voltage of audion Q2 is zero, three
The collector cut-off output high level of pole pipe Q2 is 12V, and the base stage of audion Q3 obtains electric 12V, and the emitter stage of audion Q3 is saturated
Conducting output high level is 11.3V, and the base stage of audion Q4 obtains the emitter stage saturation conduction output height of electric 11.3V, audion Q4
Level is 10.6V, now ends due to the base voltage of audion Q5 0.7V higher than its emitter voltage, and audion Q4 sends out
The 10.6V voltage of emitter-base bandgap grading output is added to the grid of field effect transistor Q6 by resistance R11, makes that the drain electrode of field effect transistor Q6 is saturated to be led
Logical, vacuum pump M1 obtains electric work, and the operating current of vacuum pump M1 will produce voltage drop when flowing through sample resistance R13.
When processor exports high level to the input A11 driving module 6, the base voltage of audion Q2 is 0.7V,
The colelctor electrode saturation conduction output low level of audion Q2 is 0V, and the base stage of audion Q3 is also 0V, the emitter stage of audion Q3
It is 0V that cut-off turns off output low level, and the base stage of audion Q4 is also that the emitter stage cut-off of 0V, audion Q4 turns off, audion Q5
Base voltage be also 0V because there is parasitic capacitance between the grid of field effect transistor Q6 and source electrode, in above field effect transistor Q6
During conducting, the parasitic capacitance between grid and the source electrode of Q6 stores electric charge, now the emitter voltage ratio of audion Q5
Base stage is high, the emitter stage conducting of audion Q5, the electric charge that the parasitic capacitance of Q6 stores sending out by resistance R11, audion Q5
Over the ground, resistance R13's emitter-base bandgap grading discharges rapidly in loop, along with quickly terminating of electric discharge, makes the drain electrode of field effect transistor Q6 end immediately, very
Empty pump M1 dead electricity quits work, and the voltage drop on sample resistance R13 becomes 0V.
Described current sampling module 7 is by the 17th resistance R14, the 18th resistance R15, the 19th resistance R16, the 20th electricity
Resistance R17, the 21st resistance R18, the 5th electric capacity C5 and comparator V4 are constituted, and one end of described 17th resistance R14 is electric current
The input of sampling module 7, the other end of described 17th resistance R14 and the positive pole of the 5th electric capacity C5 connect, described comparator
The in-phase end of V4 passes sequentially through the 18th resistance R15 and described 5th electric capacity C5 ground connection, the end of oppisite phase of described comparator V4 and institute
State after one end of the 19th resistance R16 connects by described 20th resistance R17 ground connection, another of described 19th resistance R16
End is connected with the outfan of supply module 3, and the outfan of described comparator V4 passes through the 21st resistance R18 ground connection, described ratio
The relatively outfan of device V4 is the outfan of current sampling module 7, the negative power end ground connection of described comparator V4, described comparator V4
Positive power source terminal be connected with the outfan of described supply module 3.
When vacuum pump M1 works, the operating current of vacuum pump M1 will produce voltage drop when flowing through sample resistance R13, this
After electric capacity C5 is charged by individual voltage drop by resistance R14, there is the reference voltage of the in-phase end voltage ＞ end of oppisite phase of comparator V4, than
The output terminals A 14 of relatively device V4 exports high level, and this high level delivers to the vacuum pump of processor by the output terminals A 14 of comparator V4
Operating current detection input A15, so has when processor sends low level to driving signal input A11 driving module 6
After effect drives signal, if having high level by the output terminals A 14 of detection comparator V4, then drive module 6 and vacuum pump M1 work
Make normal, otherwise drive module 6 and vacuum pump M1 to be out of order；When vacuum pump M1 dead electricity quits work, on sample resistance R13
Voltage drop becomes 0V, and the voltage of electric capacity C5 is discharged by resistance R13, resistance R14, now has the in-phase end voltage ＜ of comparator V4
The reference voltage of end of oppisite phase, the outfan of comparator V4 is output as low level when vacuum pump M1 quits work；So processor
Level logic by the output terminals A 14 of detection current sampling module 7, it becomes possible to differentiate pressure transducer 1, drive module 6 and
The duty of vacuum pump M1, thus fault sound and light alarm is provided early, improve the safety of car braking.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technology in the art
Personnel are available by logical analysis, reasoning, or a limited experiment the most on the basis of existing technology
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (5)
1. the controlling alarm managing device for electric automobile force aid system, it is characterised in that: include being arranged on vacuum storage
Pressure transducer (1) on gas tank, processor (2), supply module (3), brake signal conversion module (4), sound and light alarm module
(5), module (6) and current sampling module (7) are driven；
The power input of described pressure transducer (1) is connected with the outfan of described supply module (3), pressure transducer (1)
Analog signal output be connected with the A/D signal input part of processor (2), the output of described brake signal conversion module (4)
End is connected with the brake signal input of described processor (2), the input of supply module (3) and the DC low-voltage 12V on car
Outfan connects, and the outfan of supply module (3) is connected with the power supply side of processor (2), the first of described processor (2)
Alarm signal output ends is connected with the light warning input of sound and light alarm module (5), the second alarm signal output of processor (2)
End is connected with the acoustic alarm input of sound and light alarm module (5), the driving signal output part of processor (2) and driving module (5)
Driving signal input connect, drive the input of vacuum pump operating current outfan and the current sampling module (7) of module (5)
End connects, and the vacuum pump operating current detection input of processor (2) is connected with the outfan of current sampling module (7), each mould
The power supply input equal ground connection of negative pole end of block；
Described supply module (3) includes three terminal regulator (V1), the first resistance (R6), the first electric capacity (C1), the second electric capacity (C2)
With the 3rd electric capacity (C3)；Described first resistance (R6) one end is connected with the 12V power output end of vehicle low-voltage power supply system, another
End is connected with the input of three terminal regulator (V1), and the input of described three terminal regulator (V1) is respectively by the second electric capacity
(C2), the 3rd electric capacity (C3) ground connection, the outfan of described three terminal regulator (V1) pass through the first electric capacity (C1) ground connection and described three
The outfan output positive voltage of end manostat (V1) gives described pressure transducer (1) and processor (2).
2. the controlling alarm managing device for electric automobile force aid system as claimed in claim 1, is characterized in that: described in stop
Car signal conversion module (4) include brake switch (K1), the second resistance (R1), the 3rd resistance (R2), Zener diode (D1) and
4th electric capacity (C4)；One end of described brake switch (K1) is connected with the 12V power end of vehicle low-voltage power supply system, described brake
The other end of switch (K1) and one end of the second resistance (R1) connect, and the other end of described second resistance (R1) is respectively by the 3rd
Resistance (R2), Zener diode (D1) and the 4th electric capacity (C4) ground connection；Wherein said second resistance (R1) and Zener diode
(D1) negative pole connects.
3. the controlling alarm managing device for electric automobile force aid system as claimed in claim 1, is characterized in that: described sound
Light alarm module (5) includes buzzer (L1), the 4th resistance (R3), the 5th resistance (R4), the 6th resistance (R5), the 7th resistance
(R19), the 8th resistance (R20), the 9th resistance (R21), light emitting diode (D2), the first audion (Q1) and the second audion
(Q7), one end of one end of described buzzer (L1) and the 4th resistance (R3) electric with the 12V of vehicle low-voltage power supply system after connecting
Source connects, and the other end of described buzzer (L1) and one end of the 9th resistance (R21) connect, described 9th resistance (R21)
The colelctor electrode of the other end and the second audion (Q7) connects, the grounded emitter of described second audion (Q7), and the described 2nd 3
The base stage of pole pipe (Q7) is by one end of the 8th resistance (R20) ground connection, the base stage of the second audion (Q7) and the 7th resistance (R19)
Connecting, the other end of the 7th resistance (R19) is acoustic alarm input；The other end of the 4th resistance (R3) and light emitting diode (D2)
Positive pole connect, the colelctor electrode connection of the negative pole of light emitting diode (D2) and the first audion (Q1), the first audion (Q1)
Grounded emitter, the base stage of the first audion (Q1) passes through the 6th resistance (R5) ground connection, the base stage of the first audion (Q1) and the
One end of five resistance (R4) connects, and the other end of the 5th resistance (R4) is light warning input.
4. the controlling alarm managing device for electric automobile force aid system as claimed in claim 1, is characterized in that: described in drive
Dynamic model block (6) by the tenth resistance (R7), the 11st resistance (R8), the 12nd resistance (R9), the 13rd resistance (R10), the 14th
Resistance (R11), the 15th resistance (R12), the 16th resistance (R13), the 3rd diode (D4), the 4th diode (D3), the 3rd
Audion (Q2), the 4th audion (Q3), the 5th audion (Q4), the 6th audion (Q5) and field effect transistor (Q6) are constituted, its
In one end of the tenth resistance (R7) be the input driving module, the other end of the tenth resistance (R7) and the 3rd audion (Q2)
Base stage passes through the 11st resistance (R8) ground connection, the grounded emitter of the 3rd audion (Q2), described 3rd audion after connecting
(Q2) one end of colelctor electrode and the 12nd resistance (R9) connect after again base stage with the 4th audion (Q3) be connected, the described tenth
The other end of two resistance (R9) and the colelctor electrode of the 4th audion (Q3) are connected with the 12V power end from vehicle again after connecting,
The emitter stage of described 4th audion (Q3) and the base stage of the 5th audion (Q4) are connect by the 13rd resistance (R10) after connecting
Ground, the colelctor electrode of described 5th audion (Q4) is connected on the 12V power end of vehicle, the transmitting of described 5th audion (Q4)
By the 15th resistance (R12) ground connection after pole is in parallel with the 6th audion (Q5) emitter stage, the base stage of the 5th audion (Q4) with
The base stage of the 6th audion (Q5) is in parallel, and the emitter stage of the 6th audion (Q5) passes through the 14th resistance (R11) and field effect transistor
(Q6) grid connects, and the drain electrode of described field effect transistor (Q6) is connected with the negative pole of the 3rd diode (D4), described field effect transistor
(Q6) drain electrode is connected with the 12V power end of vehicle by vacuum pump (M1) and the 4th diode (D3) respectively, described field effect
The source electrode of pipe (Q6) is connected with described 3rd diode (D4) positive pole, the negative pole of described 3rd diode (D4) and described field effect
The drain electrode of pipe (Q6) connects, and the source electrode of described field effect transistor (Q6) passes through the 16th resistance (R13) ground connection.
5. the controlling alarm managing device for electric automobile force aid system as claimed in claim 1, is characterized in that: described electricity
Stream sampling module (7) is by the 17th resistance (R14), the 18th resistance (R15), the 19th resistance (R16), the 20th resistance
(R17), the 21st resistance (R18), the 5th electric capacity (C5) and comparator (V4) composition, the one of described 17th resistance (R14)
The input that end is current sampling module (7), the other end of described 17th resistance (R14) and the positive pole of the 5th electric capacity (C5) connect
Connecing, the in-phase end of described comparator (V4) passes sequentially through the 18th resistance (R15) and described 5th electric capacity (C5) ground connection, described ratio
The end of oppisite phase of relatively device (V4) passes through described 20th resistance (R17) ground connection after being connected with one end of described 19th resistance (R16),
The described other end of the 19th resistance (R16) is connected with the outfan of supply module (3), and the outfan of described comparator (V4) leads to
Cross the 21st resistance (R18) ground connection, the outfan that outfan is current sampling module (7) of described comparator (V4), described
The negative power end ground connection of comparator (V4), the positive power source terminal of described comparator (V4) connects with the outfan of described supply module (3)
Connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410604670.4A CN104369732B (en) | 2014-11-03 | 2014-11-03 | Controlling alarm managing device for electric automobile force aid system |
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| CN201410604670.4A CN104369732B (en) | 2014-11-03 | 2014-11-03 | Controlling alarm managing device for electric automobile force aid system |
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| CN111376883B (en) * | 2018-12-29 | 2021-08-10 | 比亚迪股份有限公司 | Vehicle and vacuum pump control method and device thereof |
| CN110969819B (en) * | 2019-11-27 | 2021-10-26 | 南京金龙新能源汽车研究院有限公司 | Strategy for formulating VAC alarm limit value |
| CN113353040B (en) * | 2021-06-23 | 2022-06-21 | 浙江万安科技股份有限公司 | Commercial vehicle electric control brake system with sensor identification function and identification method |
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| CN201998976U (en) * | 2011-01-24 | 2011-10-05 | 比亚迪股份有限公司 | Electronic parking brake system |
| CN102806900B (en) * | 2012-08-16 | 2014-09-24 | 安徽江淮汽车股份有限公司 | Vacuum assist brake controller for electric automobile |
| CN203032657U (en) * | 2012-12-29 | 2013-07-03 | 深圳市陆地方舟电动车有限公司 | Vacuum brake boosting control system of electric automobile |
| CN204250037U (en) * | 2014-11-03 | 2015-04-08 | 重庆小康工业集团股份有限公司 | A kind of electric vehicle brake power-assisted controller for vacuum pump |
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