CN102806900A - Vacuum assist brake controller for electric automobile - Google Patents
Vacuum assist brake controller for electric automobile Download PDFInfo
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- CN102806900A CN102806900A CN2012102903070A CN201210290307A CN102806900A CN 102806900 A CN102806900 A CN 102806900A CN 2012102903070 A CN2012102903070 A CN 2012102903070A CN 201210290307 A CN201210290307 A CN 201210290307A CN 102806900 A CN102806900 A CN 102806900A
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Abstract
The invention relates to a vacuum assist brake controller for an electric automobile. The controller comprises a power-switching circuit, a micro-control chip circuit, a pressure switching signal collecting circuit, a pressure sensing signal collecting circuit, a CAN (Controller Area Network) communication circuit, a vacuum pump driving circuit, a voltage monitoring circuit and a current monitoring circuit. The pressure signal collecting part of the controller adopts a redundant collecting mode of a pressure switch and a pressure sensor to be realized, and the accuracy of the collected signals is furthest ensured. A driving current feedback circuit is integrated in a chip of a driving part, so that the controller has a high current bearing capacity and meanwhile the real-time monitoring of driving current is realized, and the monitoring capacity of the controller is increased. A power supply chip and the micro-control chip realize mutual monitoring through a hardware watchdog and the voltage monitoring circuit, so that the reliability and the safety of the controller are increased. The controller ensures the safety and the reliability of a vehicle braking system in the premise that a vacuum assist function is realized.
Description
Technical field
The present invention relates to the vacuum-assisted brake technical field of electronlmobil, relate in particular to a kind of vacuum-assisted brake controller of multiple safe design such as the redundant collection of pressure signal, microcontroller chip monitoring, power line voltage monitoring and drive current monitoring and braking system of electric car that is suitable for thereof of comprising.
Background technology
The reliability of brake system and the safety performance of car load are closely bound up, and current electronlmobil is general to adopt vacuum-assisted means to make up brake system realization car load braking function.Vacuum booster is formed airtight connected space through rubber breather pipe and vacuum reservoir, and the vacuum-assisted brake controller is through the pressure signal in the pressure-sensitive component monitoring vacuum reservoir, and the work of driving vacuum pump is carried out vacuum pumping to the vacuum reservoir confined space.When chaufeur is trampled brake pedal, will obtain the brake boost that is provided by vacuum reservoir negative pressure confined space, vacuum pump carried out vacuum pumping to vacuum reservoir when negative pressure was not enough, kept the negative pressure state of vacuum reservoir inner space.
Chinese invention patent has been announced and a kind ofly under the instantaneous large-current condition, has been avoided burning out, electric motor car power assisting easy to maintenance is braked used vacuum-assisted brake controller (Zhang Xinghai; Huang Chenggang. electric motor car power assisting is braked used electric vacuum booster brake controller; Application number 200920128225.X, the applying date: 2009.07.29).This controller utilizes the pressure sensor circuit changing switch to gather vacuum reservoir internal pressure signal, builds latching circuit through double relay again and accomplishes the drive controlling to vaccum pump motor.It can drive vaccum pump motor safely and effectively according to the pressure signal threshold value, and the driving circuit that relay makes up has improved the current load ability of pure single chip circuit; Control System Component is relatively independent, only need change the device of inefficacy during damage, has practiced thrift maintenance cost.But some was not enough below this vacuum-assisted brake controller existed: the acquisition of signal of (1) controller partly adopts mechanical pressure switches to realize; Such acquisition of signal mode possibly cause the dysfunction of brake system under special operation condition (pressure switch that causes like accident misleads, service life is long or car load is braked the frequent mechanical fatigue that causes etc.), has certain potential safety hazard; (2) controller does not have corresponding monitoring means for system core parameter (controller power source service voltage, vacuum pump drive current, vacuum pump extracting vacuum efficient etc.); When occurring, the brake system defective mode can not carry out timely, effectively processing; Make system robustness lower, increased the potential safety hazard of electric vehicle running greatly; (3) controller does not contain micro-control circuit and communicating circuit; Hindered the realization of Premium Features such as complicated control policy, the output of brake system diagnostic code and the collection of driver drives vehicle braking-distance figures; Limited the further lifting of controller function, performance, made car load brake system safety, intelligent lower.
Summary of the invention
For the safety that improves the electric automobile whole brake system, intelligent; The present invention provide a kind of employing pressure switch and pressure sensor redundant gather vacuum reservoir internal pressure signal, in real time monitor the microcontroller chip state, monitor power line voltage and drive current in real time, and to corresponding critical data analyze, the vacuum-assisted brake controller that is used for electronlmobil of processing and communication.
The vacuum-assisted brake controller that is used for electronlmobil comprises power-switching circuit 1, microcontroller chip circuit 2, pressure switch signal acquisition circuit 3, pressure sensor signal Acquisition Circuit 4, CAN communicating circuit 5, vacuum pump driving circuit 6, electric voltage observation circuit 7 and current monitoring circuit 8; 1 pair of outer power voltage of said power-switching circuit carries out voltage stabilizing conversion back and is microcontroller chip circuit 2, pressure switch signal acquisition circuit 3, pressure sensor signal Acquisition Circuit 4 and 5 power supplies of CAN communicating circuit; Microcontroller chip circuit 2 carries out redundancy collection through pressure switch signal acquisition circuit 3 and 4 pairs of vacuum reservoirs of pressure sensor signal Acquisition Circuit, 12 internal pressure signals; When detecting vacuum reservoir 12 negative pressure value deficiency, enable vacuum pump driving circuit 6, make vaccum pump motor carry out vacuum pumping; When negative pressure value is excessive, stop enabling to vacuum pump driving circuit 6; Microcontroller chip circuit 2 is monitored power line voltage, drive current size and time respectively through electric voltage observation circuit 7 and current monitoring circuit 8 in the whole process; And with being transferred to the CAN bus through CAN communicating circuit 5 behind the key parameter coding of being gathered; Report entire car controller, finally show in the electrodynamic instrument early warning.
[0007]Said power-switching circuit 1 is made up of two parts; The first half is the voltage conversion circuit of Vehicular accumulator cell direct current+12V commentaries on classics+5V; It is made up of power supply voltage stabilizing chip U1, diode D1, TVS pipe D2, filter capacitor C3, C5, C6, C7, C8; Realization provides stable+5V voltage to the conversion of storage battery+12V voltage to follow-up a plurality of digit chips; The latter half is the pressure sensor voltage follower circuit; Said sensor voltage follow circuit is made up of voltage follow chip U4, divider resistance R14, R15, filter capacitor C18, C19, C20, C21; Provide the independent power supply of external pressure sensor to supply with, to reduce the electrical couplings of pressure sensor signal Acquisition Circuit and other circuit.
Said microcontroller chip circuit 2 is made up of 8 microcontroller chip U2 and basic peripheral interface circuit thereof, and peripheral interface circuit comprises chip power circuit, 16MHz crystal oscillating circuit, reference circuits, reset circuit, in order to drive the microcontroller chip normal operation.
Said pressure switch signal acquisition circuit 3 is made up of catching diode group D4, divider resistance R7, R8, R11, pull-up resistor R5, filter capacitor C15, C17 and aerotron T1; The main realization detected demarcating good bound force value in the vacuum reservoir 12 in advance: pressure switch signal voltage logical value is not enough for " 1 " characterizes the vacuum reservoir negative pressure value; Pressure switch signal voltage logical value is that " 0 " characterizes vacuum reservoir negative pressure value abundance, and then is detected by microcontroller chip circuit 2.Wherein microcontroller chip can be discerned to the switch situation of misleading that is caused by water inlet through divider resistance being provided with suitable resistance proportioning.
Said pressure sensor signal Acquisition Circuit 4 is made up of catching diode group D5, pull-up resistor R13, current limliting R17 and filter capacitor C22, C23, and circuit is mainly realized the clamper of pressure sensor signal Sensor, impurity elimination ripple are handled and gathered.
Said CAN communicating circuit 5 is made up of CAN transceiver U6, common mode choke L1, disturbance rejection aerotron D7, resistance R 21, R23, R25, R26, capacitor C 28, C29, C30, realizes the data interaction between controller and CAN bus.
Said vacuum pump driving circuit 6 is made up of the first motor drive ic U5, the second motor drive ic U7, aerotron T2, diode D6, resistance R 19, R20, R24, capacitor C 24, C25, realizes the driving of microcontroller chip to vaccum pump motor.
Said electric voltage observation circuit 7 is made up of divider resistance R16, R18, capacitor C 24, realizes the monitoring of microcontroller chip to the power conversion chip output voltage.
Said current monitoring circuit 8 is made up of catching diode group D3, resistance R 9, R10, capacitor C 14, C16, and driving current signal is become voltage signal by the microcontroller chip collection, realizes the real-time monitoring of microcontroller chip to drive current size and time length.
The model of said chip U1 is TLE4268.
The model of said voltage follow chip U4 is TLE4250.
The model of said 8 microcontroller chips is MC9S08DZ60.
The said first motor drive ic U5 and the second motor drive ic U7 are intelligent flash source switch BTS443P.
The model of said CAN transceiver U6 is TJA1040.
The present invention compares with prior art products and has the advantage of following aspect:
1. the pressure signal collecting part of controller of the present invention adopts pressure switch and the redundant mode of gathering of pressure sensor to realize, guarantees the accuracy of Information Monitoring to greatest extent;
2. the drive part of controller of the present invention is selected two vacuum pump motor drive ics for use, and its inner integrated drive current reactive circuit has been realized the monitoring of controller to drive current size and two key parameters of time length, has improved the monitoring power of controller;
3. the power supply chip of controller of the present invention and microcontroller chip are monitored mutually through hardware watchdog and electric voltage observation circuit, have promoted the reliability and the robustness of controller;
4. the present invention is optimized design from vacuum-assisted brake controller secure design point of view to controller hardware, under the prerequisite that realizes the vacuum servo function, has guaranteed safety, the reliability of car load brake system.
Description of drawings
Fig. 1 is that the present invention is used for the braking system of electric car block diagram.
Fig. 2 is the overall block diagram of controller hardware of the present invention.
Fig. 3 is the power-switching circuit schematic diagram of Fig. 2.
Fig. 4 is the microcontroller chip schematic circuit diagram of Fig. 2.
Fig. 5 is the pressure switch signal acquisition circuit schematic diagram of Fig. 2.
Fig. 6 is the pressure sensor signal Acquisition Circuit schematic diagram of Fig. 2.
Fig. 7 is the CAN communicating circuit schematic diagram of Fig. 2.
Fig. 8 is the driving circuit schematic diagram of Fig. 2.
Fig. 9 is the electric voltage observation circuit schematic diagram of Fig. 2.
Figure 10 is the current monitoring circuit schematic diagram of Fig. 2.
Sequence number among the last figure: power-switching circuit 1, microcontroller chip circuit 2, pressure switch signal acquisition circuit 3, pressure sensor signal Acquisition Circuit 4, CAN communicating circuit 5, vacuum pump driving circuit 6, electric voltage observation circuit 7, current monitoring circuit 8, brake pedal 10, vacuum booster 11, vacuum reservoir 12, vacuum-assisted brake controller 13, vacuum pump 14, entire car controller 15, electrodynamic instrument 16, storage battery 17, rubber tubing 18, CAN communication bus 19.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done explanation further.
Embodiment:
Referring to Fig. 1, the braking system of electric car of embodiment comprises brake pedal 10, vacuum booster 11, contains the vacuum reservoir 12 of pressure switch and pressure sensor, vacuum-assisted brake controller 13, vacuum pump 14, entire car controller 15, electrodynamic instrument 16, storage battery 17, rubber tubing 18 and CAN communication bus 19.Wherein connect into connected space with rubber tubing 18 between brake pedal 10, vacuum booster 11, vacuum reservoir 12 and the vacuum pump 14, after vacuum pump is accomplished vacuum pumping, chaufeur is trampled the brake pedal action brake boost is provided with this negative pressure connected space.Brake pedal 10 between any two all utilizes check valve to realize air nonreturn flow with vacuum reservoir 12 and vacuum reservoir 12 with vacuum pump 14 with vacuum booster 11, vacuum booster 11; The direction of arrow of rubber tubing 18 characterizes the flow direction of air, and for example: air flows into vacuum booster 11 by brake pedal 10 atmosphere outside when chaufeur is trampled brake pedal action generation; The inrush of air vacuum reservoir 12 of vacuum booster 11 when the action of chaufeur loosen the brake takes place; Vacuum pump carries out vacuum pumping to vacuum reservoir when negative pressure value in the vacuum reservoir 12 is not enough, and air flows into vacuum pump 14 by vacuum reservoir 12, and subnormal ambient maintains preferable scope all the time in the vacuum reservoir thus.Wherein comprise pressure switch and pressure sensor vacuum reservoir 12, vacuum-assisted brake controller 13, vacuum pump 14, and storage battery 17 between implement to be electrically connected with the low pressure wire harness; So as to realizing that pressure signal collection, vacuum pump drive, power supply is supplied with action, for example: the power supply that can realize vacuum-assisted brake controller 13, vacuum pump 14, entire car controller 15, electrodynamic instrument 16 through storage battery 17 is supplied with; Can realize the pressure switch in the vacuum reservoir 12, the collection of pressure sensor signal through the vacuum-assisted brake controller, and to the driving of vacuum pump 14.Wherein the portion C AN network for car load CAN topology is connected between vacuum-assisted brake controller 13, entire car controller 15 and the electrodynamic instrument 16; Wherein vacuum-assisted brake controller 13 is the CAN node of network of entire car controller with electrodynamic instrument 16, and entire car controller is the higher level function unit.
Referring to Fig. 2, vacuum-assisted brake controller 13 comprises power-switching circuit 1, microcontroller chip circuit 2, pressure switch signal acquisition circuit 3, pressure sensor signal Acquisition Circuit 4, CAN communicating circuit 5, vacuum pump driving circuit 6, electric voltage observation circuit 7 and current monitoring circuit 8.Convert stable+5V voltage into through power-switching circuit 1 general+12V outer power voltage, be thereafter microcontroller chip circuit 2, the catching diode group in the pressure switch signal acquisition circuit 3, catching diode group and the pull-up resistor in the pressure sensor signal Acquisition Circuit 4, the CAN transceiver power supply in the CAN communicating circuit 5; Microcontroller chip circuit 2 is the peripheral interface circuit of microcontroller chip normal operation; Microcontroller chip carries out redundancy collection through pressure switch signal acquisition circuit 3 and 4 pairs of vacuum reservoir internal pressures of pressure sensor signal Acquisition Circuit signal, when detecting the negative pressure value deficiency, enables vacuum pump driving circuit 6, lets vacuum pump carry out vacuum pumping; When negative pressure value is enough big, stop enabling to driving circuit 6.Microcontroller chip is monitored power line voltage, drive current respectively through electric voltage observation circuit 7 and current monitoring circuit 8 in the whole process; And, inform the entire car controller 15 of higher category in the Full Vehicle System with being transferred to the CAN bus through CAN communicating circuit 5 behind the important parameter coding of being gathered.
Referring to Fig. 3, the first half of power-switching circuit 1 is+voltage conversion circuit of 12V commentaries on classics+5V, the latter half is+the 5V voltage follower circuit.Voltage conversion circuit is made up of power supply voltage stabilizing chip U1, diode D1, TVS pipe D2, filter capacitor C3, C5, C6, C7, C8.Wherein, the model of power supply voltage stabilizing chip U1 is TLE4268, realizes the voltage stabilizing conversion to storage battery+12V voltage, and initiatively chip, clamper tube positive pole and pull-up resistor provide+the 5V power supply for each of controller.Power supply chip built in hardware watchdog circuit; Can monitor microcontroller chip U2 in real time and whether be in normal working; Power supply voltage stabilizing chip U1 carries out reset operation through its pin output low level signal to microcontroller chip U2 when microcontroller chip U2 is unusual; Resetting 3 times then forms diagnostic code and reports entire car controller 15 via CAN communicating circuit 5, and then carries out early warning through 16 pairs of chaufeurs of electrodynamic instrument.Voltage follower circuit provides external pressure sensor+5V power supply to supply with; Form by voltage follow chip U4, divider resistance R14, R15, filter capacitor C18, C19, C20, C21; Wherein voltage follow chip U4 TLE4250 will pass through conversion+5V voltage and pass through the back of comparing, purify as pressure sensor power line voltage SensorPower; Prevent the power pollution that causes by high power load vacuum pump 14 work, guarantee the accuracy of pressure sensor signal.
Referring to Fig. 4; Microcontroller chip circuit 2 is recommended circuit layout (referring to the 30th page in MC9S06DZ60 chip data handbook) referring to Freescale official databook; Form by 8 microcontroller chips and basic peripheral interface circuit thereof; Peripheral interface circuit comprises that chip power circuit, 16MHz crystal oscillating circuit, reference circuits, reset circuit and program write with a brush dipped in Chinese ink circuit, in order to guarantee the normal operation of microcontroller chip.Wherein the chip power circuit is made up of filter capacitor C1, C2, C9, C10, supplies with in order to chip is provided power supply; Crystal oscillating circuit is by low inductive R1, R2, and typical appearance value is formed at C1, C2 and crystal-vibration-chip U3 of 5pF to 25pF, for microcontroller chip provides outside concussion source; Reset circuit is made up of 0 Ω resistance R 4, pull-up resistor R3 and filter capacitor C13, when the microcontroller chip abnormal state, can receive the reset signal from power supply chip; Program write with a brush dipped in Chinese ink circuit by program write with a brush dipped in Chinese ink a J1, pull-up resistor BKGD constitutes, and writes with a brush dipped in Chinese ink interface for microcontroller chip provides the outside of application program.
Referring to Fig. 5, pressure switch signal acquisition circuit 3 is made up of catching diode group D4, divider resistance R7, R8, R11, pull-up resistor R5, filter capacitor C15, C17 and aerotron T1, and Switch1 is the pressure switch signal, and SW is the pressure logical signal.Resistance proportioning through R7, R8,3 divider resistances of R11 are set is 2.2:1:1, the prevention of the failure mode that can mislead to the switch that is caused by the pressure water inlet.The working process of pressure switch signal acquisition circuit 3 is: when negative pressure value in the vacuum reservoir 12 was sufficient, the pressure switch conducting made aerotron T1 conducting, pressure logical signal SW be logical zero and gathered by microcontroller chip circuit 2; When negative pressure value in the vacuum reservoir 12 was not enough, pressure switch became disconnection by conducting state, makes aerotron T1 end, pressure logical signal SW through pull-up resistor R5 be pulled to+5V is a logical one, gathered by microcontroller chip circuit 2.
Referring to Fig. 6, pressure sensor signal Acquisition Circuit 4 is made up of catching diode group D5, pull-up resistor R13, current-limiting resistance R17 and filter capacitor C22, C23, and Sensor is a pressure sensor signal, and SE is the pressure simulation signal.This partial circuit is to clamp, the filtering of pressure sensor signal Sensor, and final output area is gathered by microcontroller chip circuit 2 at the 0 pressure simulation signal SE to+5V scope.
Referring to Fig. 7; CAN communicating circuit 5 is recommended circuit layout (referring to the 8th page in TJA1040 chip data handbook) with Philips Semiconductors official databook; Be made up of CAN transceiver U6, common mode choke L1, disturbance rejection aerotron D7, resistance R 21, R23, R25, R26, capacitor C 28, C29, C30, wherein the model of CAN transceiver U6 is TJA1040.This partial circuit is a kind of universal standard circuit, is the interface between controller local area network's (CAN) protocol controller and physical bus, and being mainly controller provides difference to send data to the ability of CAN bus and differential received data to CAN controller.Common mode and DM EMI when wherein common mode choke and disturbance rejection aerotron are used to reduce the CAN high speed data transmission between the height data line, the accuracy of raising data message.
Referring to Fig. 8; Vacuum pump driving circuit 6 by the first motor drive ic U5, the second motor drive ic U7, aerotron T2, hold stream diode D6, resistance R 19, R20, R24, filter capacitor C25, C27 and form; IN_DO is the vacuum pump control signal; IN is the first motor drive ic U5, the second motor drive ic U7 enable signal, and M+ is the vacuum pump drive signal.The working process of vacuum pump driving circuit 6 is: the common input and output pin of microcontroller chip is as vacuum pump controller signals IN_DO output+5V voltage; Make aerotron T2 conducting; The first motor drive ic U5, the second motor drive ic U7 enable signal IN drag down effectively; Enable the first motor drive ic U5, the second motor drive ic U7 internal fet conducting; Final outer power voltage and vacuum pump drive signal M+ connect; Vacuum pump begins vacuum pumping wherein; The first motor drive ic U5, the second motor drive ic U7 are intelligent flash source switch BTS443P (referring to official of Infineon databook), and the distinctive current feedback pin of this chip IS can export that become exact linear relationship and ratio with the electric current of vacuum pump drive signal M+ be 8000 to 1 electric current, utilize the monitoring to vacuum pump drive signal M+ electric current of realization controller that current monitoring circuit 10 can be easy.
Referring to Fig. 9,7 pairs of electric voltage observation circuits through behind the power-switching circuit+5V voltage monitors.Electric voltage observation circuit 7 is made up of divider resistance R16, R18, filter capacitor C24; Voltage stabilizing chip output voltage values is (5V ± 0.1V); The reception voltage range of microcontroller chip pin is 0 to+5V, utilizes R16, R18 to carry out simple dividing potential drop and can realize the output voltage monitoring of microcontroller chip to power supply voltage stabilizing chip U1.When power supply voltage stabilizing chip U1 output voltage was unusual, microcontroller chip circuit 2 stopped the dog feeding operation to it, and the 3# pin REST of power supply voltage stabilizing chip U1 drags down the external reset pin that enables microcontroller chip circuit 2 thus.Wherein, Microcontroller chip circuit 2 stops to feed before the dog action in the some cycles through CAN communicating circuit 5 informs that entire car controller 15 vacuum-assisted brake controllers 13 are about to reset and by its counting; If in short period vacuum-assisted brake controller 13 by external reset above 3 times; Then entire car controller 15 sends the high bright request message of warning light for electrodynamic instrument 16 through CAN communication bus 19, thus chaufeur is carried out early warning.
Referring to Figure 10, current monitoring circuit 8 is in order to the vacuum pump drive current M+ that prevents unexpected operating mode (stuck like vaccum pump motor) and the caused failure mode apparently higher than the vacuum pump rated operational current.Current monitoring circuit 8 is made up of catching diode group D3, divider resistance R9, R10, filter capacitor C14, C16, and IS is the feedback current of vacuum pump drive current M+, and IS_AI is the feedback current analog signal.This circuit becomes after with feedback current IS filtering and loads on the R10 terminal voltage signal, again through had the input and output pin collection of AD sampling ability after clamp, the filtering by microcontroller chip.
Claims (6)
1. be used for the vacuum-assisted brake controller of electronlmobil, it is characterized in that: comprise power-switching circuit (1), microcontroller chip circuit (2), pressure switch signal acquisition circuit (3), pressure sensor signal Acquisition Circuit (4), CAN communicating circuit (5), vacuum pump driving circuit (6), electric voltage observation circuit (7) and current monitoring circuit (8); Said power-switching circuit (1) is microcontroller chip circuit (2), pressure switch signal acquisition circuit (3), pressure sensor signal Acquisition Circuit and CAN communicating circuit (5) power supply to outer power voltage voltage stabilizing conversion back; Microcontroller chip circuit (2) carries out redundancy collection through pressure switch signal acquisition circuit (3) and pressure sensor signal Acquisition Circuit (4) to brake vacuum jar internal pressure signal; When detecting brake vacuum jar negative pressure value deficiency, enable vacuum pump driving circuit (6), make vaccum pump motor carry out vacuum pumping; When negative pressure value is excessive, stop enabling to vacuum pump driving circuit (6); Microcontroller chip circuit (2) is monitored power line voltage, drive current size and time respectively through electric voltage observation circuit (7) and current monitoring circuit (8) in the whole process; And with being transferred to the CAN bus through CAN communicating circuit (5) behind the key parameter analysis of being gathered, the coding; Report entire car controller, finally show in the electrodynamic instrument early warning;
Said power-switching circuit (1) is made up of two parts; The first half is the voltage conversion circuit of Vehicular accumulator cell direct current+12V commentaries on classics+5V; It is made up of power supply voltage stabilizing chip U1, diode D1, TVS pipe D2, filter capacitor C3, C5, C6, C7, C8; Realization provides stable+5V voltage to the conversion of storage battery+12V voltage to follow-up a plurality of digit chips; The latter half is the pressure sensor voltage follower circuit; Said sensor voltage follow circuit is made up of voltage follow chip U4, divider resistance R14, R15, filter capacitor C18, C19, C20, C21; Provide the independent power supply of external pressure sensor to supply with, to reduce the electrical couplings of pressure sensor signal Acquisition Circuit and other circuit;
Said microcontroller chip circuit (2) is made up of 8 microcontroller chip U2 and basic peripheral interface circuit thereof, and peripheral interface circuit comprises chip power circuit, 16MHz crystal oscillating circuit, reference circuits, reset circuit, in order to drive the microcontroller chip normal operation;
Said pressure switch signal acquisition circuit (3) is made up of catching diode group D4, divider resistance R7, R8, R11, pull-up resistor R5, filter capacitor C15, C17 and aerotron T1; The main realization detected demarcating good bound force value in the vacuum reservoir (12) in advance: pressure switch signal voltage logical value is not enough for " 1 " characterizes the vacuum reservoir negative pressure value; Pressure switch signal voltage logical value is that " 0 " characterizes vacuum reservoir negative pressure value abundance, and then is detected by microcontroller chip circuit (2);
Wherein microcontroller chip can be discerned to the switch situation of misleading that is caused by water inlet through divider resistance being provided with suitable resistance proportioning;
Said pressure sensor signal Acquisition Circuit (4) is made up of catching diode group D5, pull-up resistor R13, current limliting R17 and filter capacitor C22, C23, and circuit is mainly realized the clamper of pressure sensor signal Sensor, impurity elimination ripple are handled and gathered;
Said CAN communicating circuit (5) is made up of CAN transceiver U6, common mode choke L1, disturbance rejection aerotron D7, resistance R 21, R23, R25, R26, capacitor C 28, C29, C30, realizes the data interaction between controller and CAN bus;
Said vacuum pump driving circuit (6) is made up of the first motor drive ic U5, the second motor drive ic U7, aerotron T2, diode D6, resistance R 19, R20, R24, capacitor C 24, C25, realizes the driving of microcontroller chip to vaccum pump motor;
Said electric voltage observation circuit (7) is made up of divider resistance R16, R18, capacitor C 24, realizes the monitoring of microcontroller chip to the power conversion chip output voltage;
Said current monitoring circuit (8) is made up of catching diode group D3, resistance R 9, R10, capacitor C 14, C16, and driving current signal is become voltage signal by the microcontroller chip collection, realizes the real-time monitoring of microcontroller chip to drive current size and time length.
2. the vacuum-assisted brake controller that is used for electronlmobil according to claim 1 is characterized in that: the model of said chip U1 is TLE4268.
3. the vacuum-assisted brake controller that is used for electronlmobil according to claim 1 is characterized in that: the model of said voltage follow chip U4 is TLE4250.
4. the vacuum-assisted brake controller that is used for electronlmobil according to claim 1 is characterized in that: the model of said 8 microcontroller chips is MC9S08DZ60.
5. the vacuum-assisted brake controller that is used for electronlmobil according to claim 1 is characterized in that: the said first motor drive ic U5 and the second motor drive ic U7 are intelligent flash source switch BTS443P.
6. the vacuum-assisted brake controller that is used for electronlmobil according to claim 1 is characterized in that: the model of said CAN transceiver U6 is TJA1040.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210290307.0A CN102806900B (en) | 2012-08-16 | 2012-08-16 | Vacuum assist brake controller for electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210290307.0A CN102806900B (en) | 2012-08-16 | 2012-08-16 | Vacuum assist brake controller for electric automobile |
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| CN102806900B CN102806900B (en) | 2014-09-24 |
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| CN103318164A (en) * | 2013-06-20 | 2013-09-25 | 东南（福建）汽车工业有限公司 | Monitoring and warning system for electric automobile vacuum boosting device |
| CN103481883A (en) * | 2013-09-24 | 2014-01-01 | 湖南南车时代电动汽车股份有限公司 | Vacuum boosting system and method of electric automobile |
| CN104369732A (en) * | 2014-11-03 | 2015-02-25 | 重庆小康工业集团股份有限公司 | Alarming control management device applied to electric car propellant system |
| CN105281211A (en) * | 2015-11-18 | 2016-01-27 | 浙江中科正方电子技术有限公司 | A control device for a vehicle high-tension distribution box |
| CN105398436A (en) * | 2015-12-30 | 2016-03-16 | 北京新能源汽车股份有限公司 | Assist brake system of vehicle and vehicle provided with same |
| CN105438252A (en) * | 2015-11-11 | 2016-03-30 | 武汉光庭科技有限公司 | Steering control equipment modifying system for automobile autonomous driving |
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| CN106646216A (en) * | 2017-01-22 | 2017-05-10 | 南京奥联新能源有限公司 | Device and method for diagnosing state of high-voltage relay of new energy automobile |
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| CN108290551A (en) * | 2015-10-15 | 2018-07-17 | 宾堡集团 | System is supplied and replaced for the battery pack in the electric vehicle of commercial use |
| CN109849884A (en) * | 2019-02-22 | 2019-06-07 | 威马智慧出行科技（上海）有限公司 | Automotive electronics vacuum method for controlling pump and electronic equipment |
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| CN103318164A (en) * | 2013-06-20 | 2013-09-25 | 东南（福建）汽车工业有限公司 | Monitoring and warning system for electric automobile vacuum boosting device |
| CN103481883A (en) * | 2013-09-24 | 2014-01-01 | 湖南南车时代电动汽车股份有限公司 | Vacuum boosting system and method of electric automobile |
| CN103481883B (en) * | 2013-09-24 | 2016-06-08 | 湖南南车时代电动汽车股份有限公司 | The vacuum boost system of a kind of electric automobile and method thereof |
| CN104369732A (en) * | 2014-11-03 | 2015-02-25 | 重庆小康工业集团股份有限公司 | Alarming control management device applied to electric car propellant system |
| CN106274873A (en) * | 2015-06-01 | 2017-01-04 | 莫嘉林 | Automobile brake vacuum pump control circuit |
| CN106274873B (en) * | 2015-06-01 | 2018-10-26 | 莫嘉林 | Automobile brake vacuum pump control circuit |
| CN108290551B (en) * | 2015-10-15 | 2022-06-10 | 宾堡集团 | Battery pack supply and replacement system in electric vehicle for commercial use |
| CN108290551A (en) * | 2015-10-15 | 2018-07-17 | 宾堡集团 | System is supplied and replaced for the battery pack in the electric vehicle of commercial use |
| CN105438252A (en) * | 2015-11-11 | 2016-03-30 | 武汉光庭科技有限公司 | Steering control equipment modifying system for automobile autonomous driving |
| CN105281211A (en) * | 2015-11-18 | 2016-01-27 | 浙江中科正方电子技术有限公司 | A control device for a vehicle high-tension distribution box |
| CN105398436A (en) * | 2015-12-30 | 2016-03-16 | 北京新能源汽车股份有限公司 | Assist brake system of vehicle and vehicle provided with same |
| CN106347336B (en) * | 2016-11-14 | 2019-04-09 | 安徽格瑞卡新能源科技有限公司 | A kind of intelligent automobile brake assist system |
| CN106347336A (en) * | 2016-11-14 | 2017-01-25 | 安徽格瑞卡新能源科技有限公司 | Intelligent automobile brake assisting system |
| CN106394540A (en) * | 2016-11-28 | 2017-02-15 | 中环天仪股份有限公司 | Intelligent brake boosting control system and method of electric vehicle |
| CN106678064A (en) * | 2016-11-30 | 2017-05-17 | 金华尼兰科技有限公司 | Electronic vacuum pump with self-protection function |
| CN108242803A (en) * | 2016-12-23 | 2018-07-03 | 上海朝辉压力仪器有限公司 | Pressure transmitter circuit |
| CN106646216B (en) * | 2017-01-22 | 2019-11-26 | 南京奥联新能源有限公司 | The high-voltage relay state diagnostic apparatus and method of new-energy automobile |
| CN106646216A (en) * | 2017-01-22 | 2017-05-10 | 南京奥联新能源有限公司 | Device and method for diagnosing state of high-voltage relay of new energy automobile |
| CN107458364A (en) * | 2017-07-20 | 2017-12-12 | 北京新能源汽车股份有限公司 | Force aid system for braking control method and device |
| CN107458364B (en) * | 2017-07-20 | 2019-11-22 | 北京新能源汽车股份有限公司 | Force aid system for braking control method and device |
| CN107291069A (en) * | 2017-07-31 | 2017-10-24 | 北京新能源汽车股份有限公司 | Controller for vacuum pump test device |
| CN107554509A (en) * | 2017-08-25 | 2018-01-09 | 北京新能源汽车股份有限公司 | Method of controlling security, system and the new-energy automobile of vavuum pump |
| CN107554509B (en) * | 2017-08-25 | 2019-11-22 | 北京新能源汽车股份有限公司 | Method of controlling security, system and the new-energy automobile of vacuum pump |
| CN109849884B (en) * | 2019-02-22 | 2020-12-18 | 威马智慧出行科技（上海）有限公司 | Automobile electronic vacuum pump control method and electronic equipment |
| CN109849884A (en) * | 2019-02-22 | 2019-06-07 | 威马智慧出行科技（上海）有限公司 | Automotive electronics vacuum method for controlling pump and electronic equipment |
| CN112698134A (en) * | 2020-12-21 | 2021-04-23 | 中国汽车工程研究院股份有限公司 | Whole vehicle electromagnetic self-compatibility risk diagnosis system and method based on global bus network |
| CN112698134B (en) * | 2020-12-21 | 2024-02-27 | 中国汽车工程研究院股份有限公司 | Whole vehicle electromagnetic self-compatibility risk diagnosis system and method based on global bus network |
| CN113353040A (en) * | 2021-06-23 | 2021-09-07 | 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 |
| 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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Application publication date: 20121205 Assignee: ANHUI JIANGHUAI ANCHI AUTOMOBILE CO., LTD. Assignor: Anhui Jianghuai Automotive Co., Ltd. Contract record no.: 2015340000003 Denomination of invention: Vacuum assist brake controller for electric automobile Granted publication date: 20140924 License type: Exclusive License Record date: 20150129 |
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