CN109435930B - Control method of electronic hand brake controller of passenger car - Google Patents
Control method of electronic hand brake controller of passenger car Download PDFInfo
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- CN109435930B CN109435930B CN201811494955.1A CN201811494955A CN109435930B CN 109435930 B CN109435930 B CN 109435930B CN 201811494955 A CN201811494955 A CN 201811494955A CN 109435930 B CN109435930 B CN 109435930B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003578 releasing effect Effects 0.000 claims abstract description 31
- 239000003990 capacitor Substances 0.000 claims description 64
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 5
- 239000013642 negative control Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/107—Disposition of hand control with electrical power assistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a control method of a passenger car electronic hand brake controller, which comprises a shell, and a power module, a signal debounce module, a controller and a power output module which are arranged in the shell, wherein the power module is used for providing required power for the signal debounce module, the controller and the power output module, the signal debounce module is connected with the input end of the controller, and the output end of the controller is connected with the power output module. The invention has the functions of controlling the handle brake, releasing the hand brake and releasing the hand brake.
Description
Technical Field
The invention relates to an electronic hand brake controller of a passenger car and a control method thereof.
Background
At present, some high-grade passenger cars apply an electronic hand brake system, and a conventional pull-wire hand brake is omitted. However, in the field of commercial vehicles such as passenger cars and trucks, since pneumatic braking is often used for the vehicle type in the field, and hydraulic braking is different from that of passenger vehicles, there are few vehicle types in which electronic handbrakes are installed in the field. Therefore, how to design an electronic hand brake controller of a passenger car is not an effective solution.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the electronic hand brake controller for the passenger car and the control method thereof, and the electronic hand brake controller has the functions of controlling the handle brake, releasing the hand brake and releasing the hand brake.
The technical scheme adopted by the invention is as follows:
The utility model provides a passenger train electron manual brake controller, includes casing and sets up power module, signal debounce module, controller and the power output module in the casing, power module is used for providing required power for signal debounce module, controller and power output module, signal debounce module is connected with the input of controller, the output and the power output module of controller are connected.
Further, the power supply module comprises a power supply circuit and a filter circuit.
Further, the power supply circuit comprises a power supply chip, a first diode and a third diode, wherein the anode of the first diode is connected with a 24V power supply, the cathode of the first diode is connected with the input end of the power supply chip through a resistor, the output end of the power supply chip provides required power for the signal debounce module, the controller and the power output module, and the grounding end of the power supply chip is connected with a ground node through the third diode.
Further, the filter circuit comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a second diode, one end of the second capacitor and one end of the fourth capacitor which are connected in parallel are connected with the input end of the power chip, the other end of the second capacitor and one end of the fourth capacitor are connected with the grounding end of the power chip, one end of the first capacitor and one end of the third capacitor which are connected in parallel are connected with the output end of the power chip, and the other end of the first capacitor and the other end of the third capacitor are connected with the grounding end of the power chip; the anode of the second diode is connected with the ground node, and the cathode of the second diode is connected with a 24V power supply.
Further, the signal debouncing module comprises a multipath signal debouncing circuit, the signal debouncing circuit comprises a resistor, a capacitor and a voltage stabilizing tube which are connected in parallel, one ends of the resistor, the capacitor and the voltage stabilizing tube which are connected in parallel are grounded, the other ends of the resistor, the capacitor and the voltage stabilizing tube are respectively connected with the input ends of a second resistor and a controller, and the other end of the second resistor is the input end of an electronic hand brake controller.
Further, the power output module comprises a relay, an intelligent power switch, a first triode and a third triode, wherein a base electrode of the first triode is connected with an output end of the controller through a resistor, a collector electrode of the first triode is connected with an input end of the intelligent power switch through the resistor, an output end of the intelligent power switch is connected with one end of a normally open switch of the relay, a base electrode of the third triode is connected with the other output end of the controller through the resistor, a collector electrode of the third triode is connected with a coil of the relay, and the other end of the normally open switch of the relay is an output end of the electronic hand brake controller.
Further, the intelligent power switch adopts a BTS443P type intelligent power switch.
Further, the power output module further comprises a detection circuit connected with a fourth pipe pin of the intelligent power switch, and the detection circuit comprises a capacitor and a resistor which are connected in parallel and a voltage stabilizing tube and a capacitor which are connected in parallel;
One end of the parallel capacitor and resistor is connected with a fourth pipe pin of the intelligent power switch, one end of the parallel capacitor and resistor is also connected with one end of the parallel voltage stabilizing tube and capacitor through the resistor, and the other end of the parallel capacitor and resistor and the other end of the parallel voltage stabilizing tube and capacitor are grounded.
Further, the controller adopts MC68HC08 series singlechip.
The control method of the passenger car electronic hand brake controller comprises the following steps:
collecting a hand brake state signal, a handle brake signal and a hand brake release signal;
when the hand brake state signal is received, driving a hand brake work indicator lamp to be lighted;
When receiving the handle brake signal, outputting a handle brake electromagnetic valve control signal to control the handle brake action;
When a hand brake releasing signal is received and the received foot brake state signal is a positive signal, outputting a brake releasing electromagnetic valve control signal to control the execution of hand brake releasing action;
when the handle brake signal and the hand brake release signal are circularly received and the hand brake state signal is not received, a handle brake electromagnetic valve control signal is output to control the handle brake action; when the handle brake signal and the hand brake releasing signal are circularly received and the hand brake state signal is received, a brake releasing electromagnetic valve control signal is output to control the execution of the hand brake releasing action.
Further, the method further comprises the following steps:
Outputting a brake release electromagnetic valve control signal when the time of the received hand brake release signal exceeds a set time threshold value, and forcedly executing the hand brake release action;
And after the handle brake signal and the hand brake releasing signal are received in a circulating way and exceed the set time threshold, the control signal of the handle brake electromagnetic valve and the control signal of the hand brake releasing electromagnetic valve are output in a circulating way, and the handle brake action and the hand brake releasing action are repeatedly executed in a circulating way.
Further, the method further comprises the following steps:
reading the engine rotating speed from the signals of the CAN bus of the engine, and collecting the vehicle door signals and the transmission gear signals;
when the rotating speed of the engine is larger than a set rotating speed threshold value, a vehicle door signal and a transmission empty gear signal are not received, and a hand braking state signal is received, a brake release electromagnetic valve control signal is output, and the hand brake release action is controlled to be executed.
Compared with the prior art, the invention has the beneficial effects that:
(1) The electronic hand brake controller can be conveniently fixed in the vehicle body and connected with the vehicle control wiring harness to play a role in safely controlling the vehicle;
(2) The invention adopts the singlechip to read the state of the whole vehicle, controls the switch of the electronic hand brake pneumatic control valve through the power output module, and prevents electromagnetic impact and reverse voltage interference.
Drawings
FIG. 1 is a block diagram of a passenger car electronic hand brake controller;
Fig. 2 is a circuit diagram of a power supply circuit and a filter circuit;
FIG. 3 is a circuit diagram of a signal dejitter circuit;
FIG. 4 is a circuit diagram of a power output module;
Fig. 5 is a schematic diagram of the pin electronics of the electronic manual brake controller of the passenger car.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. refer to an orientation or a positional relationship based on that shown in the drawings, and are merely relational terms, which are used for convenience in describing structural relationships of various components or elements of the present invention, and do not denote any one of the components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly attached," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present invention can be determined according to circumstances by a person skilled in the relevant art or the art, and is not to be construed as limiting the present invention.
As shown in fig. 1, the invention provides an electronic manual brake controller of a passenger car, which comprises a shell, and a power module 1, a signal debounce module 2, a controller 3 and a power output module 4 which are arranged in the shell, wherein the power module 1 is used for providing required power for the signal debounce module 2, the controller 3 and the power output module 4, the signal debounce module 2 is connected with the input end of the controller 3, the output end of the controller 3 is connected with the power output module 4, and the power output module 4 is used for outputting signals for controlling a handle brake electromagnetic valve, a hand brake release electromagnetic valve or a manual brake work indicator lamp. The shell of the passenger car electronic hand brake controller can be conveniently fixed inside the car body and is connected with the whole car control wiring harness, so that a safety control function is achieved.
The power supply module comprises a power supply circuit and a filter circuit, and the power supply circuit is used for reducing the input 24VDC vehicle-mounted power supply to a 5VDC power supply voltage and supplying power to other modules; the filter circuit is connected with the power circuit and is used for carrying out filter processing on the power voltage output by the power circuit and filtering interference. Because of the numerous electrical appliances on the vehicle, including capacitive loads, inductive loads and resistive loads, and the failure mode of the generator in which the load is thrown, the power supply voltage of the vehicle has various ripples and abnormal voltage jitter. In order to prevent the abnormality of the power supply voltage from damaging other circuits of the electronic hand brake controller, the reliability of the electronic hand brake controller is improved, and aiming at possible abnormal points of the power supply voltage of the vehicle, a filter circuit is selected to perform interference filtering, so that the fluctuation of the voltage is suppressed to the acceptable degree of the internal circuit of the electronic hand brake controller.
Fig. 2 is a circuit diagram of a power supply circuit and a filter circuit. The power supply circuit comprises a resistor R1, a power supply chip U1, a diode D1 and a diode D3, wherein the anode of the diode D1 is connected with a 24V power supply, the cathode of the diode D1 is connected with the resistor R1, the other end of the resistor R1 is connected with the input end of the power supply chip U1, the output end of the power supply chip U1 outputs required power to the signal debounce module, the controller and the power output module, and the grounding end of the power supply chip U1 is connected with a ground node SGND through the diode D3.
In this embodiment, the power chip U1 is a 7805 power chip.
The filter circuit comprises a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a diode D2, wherein one end of the capacitor C2 and one end of the capacitor C4 which are connected in parallel are connected with the input end of the power chip U1, the other end of the capacitor C4 is connected with the grounding end of the power chip U1, one end of the capacitor C1 and one end of the capacitor C3 which are connected in parallel are connected with the output end of the power chip U1, and the other end of the capacitor C3 is connected with the grounding end of the power chip U1; the anode of the diode D2 is connected to the ground node SGND, and the cathode of the diode D2 is connected to a 24V power supply.
The signal debounce module is used for suppressing external interference of the input end of the controller. Because the electronic hand brake controller needs to judge the state of the input pin of the controller in real time, if the state of the input pin is judged to be correct or not, the operation safety of the whole vehicle is related, and therefore, the signal debounce circuit is arranged to comprehensively inhibit external interference.
The signal debouncing module comprises six paths of signal debouncing circuits, as shown in fig. 3, the signal debouncing circuits comprise a resistor R2, a resistor R3, a capacitor C5 and a voltage stabilizing tube D4, the resistor R3, the capacitor C5 and the voltage stabilizing tube D4 are connected in parallel, one ends of the resistor R3, the capacitor C5 and the voltage stabilizing tube D4 which are connected in parallel are grounded, the other ends of the resistor R3 and the capacitor C5 are respectively connected with the input ends of the resistor R2 and the controller, and the other ends of the resistor R2 are used as the input ends of the electronic hand brake controller and are used for receiving bus signals, vehicle door signals, neutral gear signals, hand brake signals and foot brake signals.
The controller is realized by adopting an MC68HC (9) 08 series singlechip, the singlechip has high integration level, the logic is convenient to realize, the timer precision is high, the load control requirement can be realized, the MC68HC (9) 08 series singlechip has the function of preventing code from flying, and even if code flying occurs, the controller can also prevent the application from malfunctioning.
The power output module is used for controlling the handle brake electromagnetic valve, the hand brake release electromagnetic valve or the hand brake work indicator lamp; because the load corresponding to the power output circuit is a high-power lamp type load, the reliable power output circuit needs to achieve the required output capacity and requires enough service life times, and preferably, the power output circuit adopts a relay, so that the requirements of the two aspects are met.
Fig. 4 is a circuit diagram of a power output module. As shown in fig. 4, the power output module includes a relay K1, an intelligent power switch Q2, a triode Q1, a triode Q3 and a voltage stabilizing tube VR1, the base of the triode Q1 is connected with an output end of the controller through a resistor R12, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with an input end of the intelligent power switch Q2 through a resistor R7, an output end of the intelligent power switch Q2 is connected with one end of a normally open switch of the relay K1, the base of the triode Q3 is connected with another output end of the controller through a resistor R21, the emitter of the triode Q3 is grounded, the collector of the triode Q1 is connected with a coil of the relay K1, and the other end of the normally open switch of the relay K1 is an output end of the electronic hand brake controller and is used for being connected with a handle electromagnetic valve, a hand brake releasing electromagnetic valve or a hand brake work indicator.
In this embodiment, the intelligent power switch Q2 is a BTS 443P-type intelligent power switch.
In this embodiment, the power output module further includes a detection circuit connected to the IS end of the intelligent power switch Q2, where the detection circuit includes a capacitor C12 and a resistor R13 connected in parallel, a resistor R11, and a regulator VR1 and a capacitor C13 connected in parallel. One end of the parallel capacitor C12 and one end of the resistor R13 are respectively connected with the IS end of the intelligent power switch Q2 and one end of the resistor R11, the other end of the resistor R11 IS connected with one end of the parallel voltage stabilizing tube VR1 and one end of the capacitor C13, and the other ends of the parallel capacitor C12 and the resistor R13 and the other ends of the parallel voltage stabilizing tube VR1 and the capacitor C13 are grounded.
The shell of the passenger car electronic hand brake controller is provided with a power pin, an input pin and an output pin which are connected with a whole car control wire harness. Fig. 5 is a schematic diagram of the pin electronics of the electronic manual brake controller of the passenger car. As shown in fig. 5, the power supply pins comprise a pin A1 and a pin A2, the pin A1 is connected with a power supply, and the pin A2 is grounded; the input pins comprise a B1 pin, a B2 pin, a B3 pin, a B4 pin, a B5 pin, a B6 pin, a C1 pin, a C2 pin and a C3 pin, and the B1 pin and the B2 pin are used for reading engine speed information from the CAN bus; b3, receiving a vehicle door signal by a foot, wherein the vehicle door is in a positive signal when opened and is suspended when closed; the foot B4 receives a neutral signal, and is a negative signal when in neutral and is suspended when not in neutral; the foot B5 receives the hand brake state signal, and the hand brake is pulled to be a negative signal and suspended when not pulled; b6, receiving a foot braking state signal, wherein the foot is a positive signal when the brake is stepped on, and is suspended when the brake is not stepped on; the C1 foot receives a handle brake signal, which is a negative control inching switch, and the C2 foot receives a hand brake releasing signal, which is a negative control inching switch; the C3 pin receives a circularly switched hand brake signal and is a negative control point-operated switch; the output pin comprises a D1 pin, a D2 pin and a D3 pin, wherein the D1 pin outputs a manual brake work indicator lamp control signal, the D2 pin outputs a manual brake release electromagnetic valve control signal, and the D3 pin outputs a handle brake electromagnetic valve control signal.
When the passenger car electronic hand brake controller is used, the following steps are adopted:
when the B5 pin receives a negative signal, the D1 pin always outputs a 24V power supply outwards to drive a hand brake work indicator lamp to be lighted;
After the C1 pin receives a negative trigger signal (> 0.2S), the D3 pin outputs a high-level power supply lasting for 0.5S outwards, and the handle braking action is executed;
When the C2 pin receives a negative trigger signal (> 0.2S), if the B6 pin receives a high-level signal at the moment, the D2 pin outputs a high-level power supply which lasts for 0.5S outwards, and the hand brake releasing action is executed;
When the C2 pin receives the negative trigger signal (> 0.2S), if the B6 pin does not receive the high-level signal (is in a suspended state) at the moment, the D2 pin does not output a high-level power supply outwards;
When the C2 pin receives a negative trigger signal which is more than 1S, the D2 pin outputs a high-level power supply which lasts for 0.5S outwards no matter what state the B6 pin is in, and the hand brake releasing action is forcedly executed;
When the C3 pin receives a negative trigger signal (> 0.2S), if the B5 pin is in a suspended state, the D3 pin outputs a high-level power supply which lasts for 0.5S outwards, and a handle braking action is executed;
after the C3 pin receives the negative trigger signal (> 0.2S), if the B5 pin is in a grounding state, detecting the state of the B6 pin at the moment, and if the B6 pin is simultaneously in a high-level signal, the D2 pin outputs a high-level power supply which lasts for 0.5S outwards, and the hand brake releasing action is executed; if the B6 pin is in a suspended state, the D2 pin does not output a high-level power supply outwards;
When the C3 pin receives a negative trigger signal which is more than 1S, in one cycle of electrifying the electronic controller, the D3 pin is executed for the first time to output a high-level power supply outwards (for 0.5S and a handle brake action) and the D2 pin is executed for the second time to output the high-level power supply outwards (for 0.5S and a hand brake action) regardless of the states of other pins, and the cycle is repeated;
When the engine rotating speed is more than 400r/min and the accelerator opening is more than 20% from the signals of the CAN bus of the engine, the B3 foot is suspended, the positive signals are not received, and the vehicle door is closed; the foot B4 is suspended, a negative signal is not received, and the gearbox is not in neutral gear; b5, the foot is grounded, and the parking brake is effective; the D2 pin outputs a high-level power supply which lasts for 0.5S outwards, and the hand brake releasing action is automatically executed.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (8)
1. The control method of the passenger car electronic hand brake controller comprises a shell, and a power module, a signal debounce module, a controller and a power output module which are arranged in the shell, wherein the power module is used for providing required power for the signal debounce module, the controller and the power output module, the signal debounce module is connected with the input end of the controller, and the output end of the controller is connected with the power output module;
The method is characterized by comprising the following steps:
collecting a hand brake state signal, a handle brake signal and a hand brake release signal;
when the hand brake state signal is received, driving a hand brake work indicator lamp to be lighted;
When receiving the handle brake signal, outputting a handle brake electromagnetic valve control signal to control the handle brake action;
When a hand brake releasing signal is received and the received foot brake state signal is a positive signal, outputting a brake releasing electromagnetic valve control signal to control the execution of hand brake releasing action;
When the handle brake signal and the hand brake release signal are circularly received and the hand brake state signal is not received, a handle brake electromagnetic valve control signal is output to control the handle brake action; when the handle brake signal and the hand brake releasing signal are circularly received and the hand brake state signal is received, a brake releasing electromagnetic valve control signal is output to control the execution of the hand brake releasing action;
when the time of the received hand brake releasing signal exceeds a set time threshold, outputting a hand brake releasing electromagnetic valve control signal, and executing hand brake releasing action;
And after the handle brake signal and the hand brake releasing signal are received in a circulating way and exceed the set time threshold, the control signal of the handle brake electromagnetic valve and the control signal of the hand brake releasing electromagnetic valve are output in a circulating way, and the handle brake action and the hand brake releasing action are repeatedly executed in a circulating way.
2. The control method of a passenger car electronic hand brake controller according to claim 1, wherein the power supply module comprises a power supply circuit and a filter circuit.
3. The control method of the electronic hand brake controller of the passenger car according to claim 2, wherein the power supply circuit comprises a power supply chip, a first diode and a third diode, an anode of the first diode is connected with a 24V power supply, a cathode of the first diode is connected with an input end of the power supply chip through a resistor, an output end of the power supply chip provides required power for the signal debounce module, the controller and the power output module, and a grounding end of the power supply chip is connected with a ground node through the third diode.
4. The control method of the electronic handbrake controller of the passenger car according to claim 2, wherein the filter circuit comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a second diode, one end of the second capacitor and one end of the fourth capacitor which are connected in parallel are connected with the input end of the power chip, the other end of the second capacitor and one end of the fourth capacitor are connected with the grounding end of the power chip, one end of the first capacitor and one end of the third capacitor which are connected in parallel are connected with the output end of the power chip, and the other end of the first capacitor and the other end of the third capacitor are connected with the grounding end of the power chip; the anode of the second diode is connected with the ground node, and the cathode of the second diode is connected with a 24V power supply.
5. The control method of the electronic hand brake controller of the passenger car according to claim 1, wherein the signal debouncing module comprises a multipath signal debouncing circuit, the signal debouncing circuit comprises a resistor, a capacitor and a voltage stabilizing tube which are connected in parallel, one ends of the resistor, the capacitor and the voltage stabilizing tube which are connected in parallel are grounded, the other ends of the resistor, the capacitor and the voltage stabilizing tube are respectively connected with the input ends of a second resistor and the controller, and the other end of the second resistor is the input end of the electronic hand brake controller.
6. The control method of the passenger car electronic hand brake controller according to claim 1, wherein the power output module comprises a relay, an intelligent power switch, a first triode and a third triode, wherein a base electrode of the first triode is connected with an output end of the controller through a resistor, a collector electrode of the first triode is connected with an input end of the intelligent power switch through a resistor, an output end of the intelligent power switch is connected with one end of a normally open switch of the relay, a base electrode of the third triode is connected with the other output end of the controller through a resistor, a collector electrode of the third triode is connected with a coil of the relay, and the other end of the normally open switch of the relay is an output end of the electronic hand brake controller.
7. The control method of the electronic handbrake controller of the passenger car according to claim 6, wherein the power output module further comprises a detection circuit connected with a fourth pipe pin of the intelligent power switch, and the detection circuit comprises a capacitor and a resistor which are connected in parallel and a voltage stabilizing tube and a capacitor which are connected in parallel;
One end of the parallel capacitor and resistor is connected with a fourth pipe pin of the intelligent power switch, one end of the parallel capacitor and resistor is also connected with one end of the parallel voltage stabilizing tube and capacitor through the resistor, and the other end of the parallel capacitor and resistor and the other end of the parallel voltage stabilizing tube and capacitor are grounded.
8. The control method according to claim 1, characterized by further comprising:
reading the engine rotating speed from the signals of the CAN bus of the engine, and collecting the vehicle door signals and the transmission gear signals;
when the rotating speed of the engine is larger than a set rotating speed threshold value, a vehicle door signal and a transmission empty gear signal are not received, and a hand braking state signal is received, a brake release electromagnetic valve control signal is output, and the hand brake release action is controlled to be executed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811494955.1A CN109435930B (en) | 2018-12-07 | 2018-12-07 | Control method of electronic hand brake controller of passenger car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811494955.1A CN109435930B (en) | 2018-12-07 | 2018-12-07 | Control method of electronic hand brake controller of passenger car |
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| CN109435930A CN109435930A (en) | 2019-03-08 |
| CN109435930B true CN109435930B (en) | 2024-07-05 |
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| JP2005081963A (en) * | 2003-09-08 | 2005-03-31 | Mazda Motor Corp | Electric parking brake system |
| CN204978565U (en) * | 2015-08-03 | 2016-01-20 | 中通客车控股股份有限公司 | Vehicle windshield wiper controller |
| CN209426751U (en) * | 2018-12-07 | 2019-09-24 | 中通客车控股股份有限公司 | A kind of car electronics parking brake controller |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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