CN108016415B - Electronic parking control switch and application method thereof - Google Patents
Electronic parking control switch and application method thereof Download PDFInfo
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- CN108016415B CN108016415B CN201711496618.1A CN201711496618A CN108016415B CN 108016415 B CN108016415 B CN 108016415B CN 201711496618 A CN201711496618 A CN 201711496618A CN 108016415 B CN108016415 B CN 108016415B
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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
- B60T7/085—Brake-action initiating means for personal initiation hand actuated by electrical means, e.g. travel, force sensors
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Abstract
The invention belongs to the technical field of electronic control devices, and particularly relates to an electronic parking control switch and a use method thereof, wherein the electronic parking control switch comprises a six-pin connector, a handle, an ejector rod, a return spring, a first sliding resistor, a second sliding resistor, a first micro switch and a second micro switch, and when a driving brake fails, a driver can linearly control parking braking force to implement emergency braking through the control switch: when the vehicle is parked on a slope, a driver can implement parking detection of the trailer through the control switch; the driver can also manually apply and release the parking brake via the control switch when the vehicle is stationary.
Description
Technical Field
The invention belongs to the technical field of electronic control devices, and particularly relates to an electronic parking control switch and a use method thereof.
Background
In the great background of the large-scale development of intelligent automobiles in various countries of the world, an electronic parking system is also applied to commercial vehicles, but different from a parking system of a passenger vehicle, the parking system of the commercial vehicle usually adopts a spring braking system for air-break braking, the parking system is basically used as an emergency braking system, and when the braking of the driving is invalid, a driver can control the braking through the parking system. According to the requirements of commercial vehicle brake regulation GB12676, when the parking brake is used as an emergency braking system to apply braking, the magnitude of the braking force of the parking brake is required to be linearly controllable, and the electronic parking switch on the passenger vehicle cannot meet the standard requirements at present, so that the tractor is required to have a trailer parking detection function when parking on a slope. When the tractor is used for parking, the towed trailer is braked by the braking air pressure output by the trailer valve, and the leakage of a braking system of the vehicle is unavoidable, so that when the automobile train is parked on a slope, the phenomenon of sliding on the slope can occur when the braking force is reduced to cause the automobile train to be unable to park on the slope, and the danger of destroying the automobile is brought. In order to prevent the occurrence of the above situation, the air brake tractor parking device must have a trailer parking detection function, when the car train is parked on the ramp, the driver can know whether the parking braking force of the tractor can ensure that the car train is parked on the current ramp, and further necessary measures are taken, and the electronic parking switch adopted by the current passenger car does not have the trailer parking detection function.
Disclosure of Invention
In order to overcome the problems, the invention provides an electronic parking control switch and a using method thereof, wherein when the driving braking fails, a driver can linearly control the parking braking force to implement emergency braking through the control switch: when the vehicle is parked on a slope, a driver can implement parking detection of the trailer through the control switch; the driver can also manually apply and release the parking brake via the control switch when the vehicle is stationary.
The electronic parking control switch comprises a six-pin connector, a handle 1, a push rod 11, a return spring 2, a first sliding resistor 3, a second sliding resistor 4, a first micro switch 5 and a second micro switch 6, wherein the six-pin connector is provided with a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, the first sliding resistor 3 and the second sliding resistor 4 are redundant, the reliability of an output signal is effectively ensured, the handle 1 is movably connected with the upper end of the push rod 11, the lower end of the push rod 11 is movably connected with the return spring 2, the return spring 2 applies an initial acting force to the push rod 11 in an initial state to ensure that the push rod 11 is positioned at the top, and the return force of the return spring 2 to the push rod 11 is gradually increased along with the downward movement of the push rod 11; the ejector rod 11 is respectively and movably connected with the sliding block of the first sliding resistor 3, the sliding block of the second sliding resistor 4, the first micro switch 5 and the second micro switch 6, so that the ejector rod 11 can drive the first sliding resistor 3, the second sliding resistor 4, the first micro switch 5 and the second micro switch 6 to move upwards or downwards at the same time;
the first pin is connected with the public power supply ground, the second pin is connected with the public power supply anode, the third pin is connected with the third resistor 51 and the first micro switch 5 in series through a circuit to output a step voltage signal for waking up an electronic parking system controller, meanwhile, the signal can be used as a brake control signal to be output to other controllers to realize the effect of lighting a service brake lamp, the fourth pin is connected with the first resistor 31 and the first slide resistor 3 in series through a circuit to output different voltage signals along with the position change of a slide sheet of the first slide resistor 3; the fifth pin is connected with the second resistor 41 and the second sliding resistor 4 in series through a circuit, and outputs different voltage signals along with the sliding vane change of the second sliding resistor 4; the sixth pin is connected in series with the fourth resistor 61 and the second micro switch 6 through a circuit to output a step voltage signal, and the controller of the electronic parking system can judge the operation intention of a driver by utilizing the step change of the voltage signal, so as to control the parking detection of the trailer and judge whether to park or release the parking, the first sliding resistor 3 is connected in parallel with the second sliding resistor 4, and the first micro switch 5 is connected in parallel with the second micro switch 6.
The first and second slide resistors 3 and 4 may be replaced by displacement sensors.
The invention also provides a use method of the electronic parking control switch, which comprises the following steps:
when a driver pulls the handle 1, the ejector rod 11 overcomes the force of the return spring 2 and drives the sliding blocks of the first sliding resistor 3 and the second sliding resistor 4 and the two groups of microswitches to move downwards;
when the first micro switch 5 is switched on or off, a step voltage signal is output by the third pin, the controller of the electronic parking system is awakened or enters a dormant state according to the voltage signal, and meanwhile, a message is sent to the CAN network to convey the action of implementing and releasing the brake to other controllers, and at the moment, the controller of the electronic parking system or other controllers CAN implement the control of turning on or off the brake lamp according to the information;
when the second micro switch 6 is turned on or turned off, a step voltage signal is output by the sixth pin, and the electronic parking system controller judges the operation intention of the driver according to the voltage signal and the control logic, so as to implement the parking detection of the trailer and implement the control of permanent parking or releasing the permanent parking.
The ejector rod 11 is movably connected with the return spring 2, an initial acting force is applied to the ejector rod 11 in an initial state, the ejector rod is guaranteed to be positioned at the top, the return force of the return spring 2 to the ejector rod 11 is gradually increased along with the downward movement of the ejector rod 11, and the change of the force fed back to the handle 1 is changed according to the characteristic curve of Ft of fig. 2.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a graph showing the variation of Ft characteristic curve of the present invention.
Wherein: the handle, the push rod, the return spring 2, the first sliding resistor 3, the first resistor 31, the second sliding resistor 4, the second resistor 41, the first micro switch 5, the third resistor 51, the second micro switch 6, the fourth resistor 61 and F (N) are the force (Newton); u (V) is a voltage (volt), SIG2 is a voltage output signal, SIG1 is a voltage output signal.
Detailed Description
Example 1
The electronic parking control switch comprises a six-pin connector, a handle 1, a push rod 11, a return spring 2, a first sliding resistor 3, a second sliding resistor 4, a first micro switch 5 and a second micro switch 6, wherein the six-pin connector is provided with a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, the first sliding resistor 3 and the second sliding resistor 4 are redundant, the reliability of an output signal is effectively ensured, the handle 1 is movably connected with the upper end of the push rod 11, the lower end of the push rod 11 is movably connected with the return spring 2, an initial acting force is applied to the push rod 11 in an initial state, the push rod 11 is ensured to be positioned at the top, and the return force of the return spring 2 to the push rod 11 is gradually increased along with the downward movement of the push rod 11; the ejector rod 11 is respectively and movably connected with the sliding block of the first sliding resistor 3, the sliding block of the second sliding resistor 4, the first micro switch 5 and the second micro switch 6, so that the ejector rod 11 can drive the first sliding resistor 3, the second sliding resistor 4, the first micro switch 5 and the second micro switch 6 to move upwards or downwards at the same time;
the first pin is connected with the public power supply ground, the second pin is connected with the public power supply anode, the third pin is connected with the third resistor 51 and the first micro switch 5 in series through a circuit to output a step voltage signal for waking up an electronic parking system controller, meanwhile, the signal can be used as a brake control signal to be output to other controllers to realize the effect of lighting a service brake lamp, the fourth pin is connected with the first resistor 31 and the first slide resistor 3 in series through a circuit to output different voltage signals along with the position change of a slide sheet of the first slide resistor 3; the fifth pin is connected with the second resistor 41 and the second sliding resistor 4 in series through a circuit, and outputs different voltage signals along with the sliding vane change of the second sliding resistor 4; the sixth pin is connected in series with the fourth resistor 61 and the second micro switch 6 through a circuit to output a step voltage signal, and the controller of the electronic parking system can judge the operation intention of a driver by utilizing the step change of the voltage signal, so as to control the parking detection of the trailer and judge whether to park or release the parking, the first sliding resistor 3 is connected in parallel with the second sliding resistor 4, and the first micro switch 5 is connected in parallel with the second micro switch 6.
The first and second slide resistors 3 and 4 may be replaced by displacement sensors.
The invention also provides a use method of the electronic parking control switch, which comprises the following steps:
when a driver pulls the handle 1, the ejector rod 11 overcomes the force of the return spring 2 and drives the sliding blocks of the first sliding resistor 3 and the second sliding resistor 4 and the two groups of microswitches to move downwards;
when the first micro switch 5 is switched on or off, a step voltage signal is output by the third pin, the controller of the electronic parking system receives the signal, is awakened or enters a dormant state according to the voltage signal, and simultaneously sends a message to the CAN network for conveying the action of implementing and releasing the brake to other controllers, and at the moment, the controller of the electronic parking system or other controllers CAN implement the control of turning on or off the brake lamp according to the information;
when the second micro switch 6 is turned on or turned off, a step voltage signal is output by the sixth pin, and the electronic parking system controller judges the operation intention of the driver according to the received voltage signal and the control logic, so as to implement the parking detection of the trailer and implement the control of permanent parking or releasing the permanent parking.
The ejector rod 11 is movably connected with the return spring 2, an initial acting force is applied to the ejector rod 11 in an initial state, the ejector rod is guaranteed to be positioned at the top, the return force of the return spring 2 to the ejector rod 11 is gradually increased along with the downward movement of the ejector rod 11, and the change of the force fed back to the handle 1 is changed according to the Ft characteristic curve of the figure 2.
Setting Ft characteristic curves and air pressure-rotation angle output characteristic curves according to different vehicle types;
when the parking braking process is manually implemented: when the parking brake is released, when a driver pulls the handle 1, the ejector rod 11 connected with the handle 1 overcomes the force of the return spring 2 to drive the first sliding resistor 3, the second sliding resistor 4, the first micro switch 5 and the second micro switch 6 to move downwards, the voltage of the first sliding resistor 3 and the second sliding resistor 4 changes according to a characteristic curve, when the rotation angle of the handle 1 reaches alpha 1, the first micro switch 5 is switched on, the electronic parking system is awakened, the brake air pressure is controlled according to a set air pressure-rotation angle output characteristic curve to implement the brake, when the rotation angle of the handle 1 reaches alpha 2, the output air pressure of the electronic parking system is zero, both the tractor and the trailer implement the brake, the handle force of the handle 1 linearly increases along with the rotation angle of the handle 1, and when the driver continues to pull the handle 1 to enable the rotation angle to exceed alpha 2, the handle force of the handle 1 changes, and the difference value of the handle force of the handle 1 is delta F in the process from alpha 2 to alpha 3; if the driver releases the handle 1 before the second micro switch 6 is turned on, the parking braking force is reduced along with the reduction of the rotation angle of the handle 1 until the rotation angle of the handle 1 reaches alpha 1 (namely, when the first micro switch 5 is turned off), the parking brake is completely released, and the output air pressure of the electronic parking system is restored to the maximum value; if the driver is pressed down on the driving pedal when the second micro switch 6 is turned on and then the driver releases the handle 1 again, the parking brake will be permanently applied when the second micro switch 6 is turned off, and both the tractor and the trailer will apply the parking brake; under the condition that the permanent parking brake is implemented, when the rotation angle of the handle 1 reaches alpha 3, if the running pedal is not stepped on and the vehicle speed is zero when the second micro switch 6 is turned on, the electronic parking system is triggered to release the brake of the trailer, and only the parking brake of the tractor is reserved, so that the parking detection function of the trailer is realized, and when the handle 1 is released again by a driver, the trailer is braked again;
when the parking brake process is manually released: in the case where the parking brake has been applied and the running pedal is depressed, when the driver pulls the handle 1 until the second micro switch 6 is turned on (and the rotation angle of the handle 1 reaches α3), the electronic parking system will release the permanent parking, at which time if the driver releases the handle 1 again, the electronic parking system will increase the output air pressure according to the air pressure-rotation angle output characteristic curve with the decrease in the rotation angle of the handle 1 until the rotation angle of the handle 1 decreases to α1, and the parking brake is released;
emergency braking process: when the service brake fails, the driver pulls the handle 1, when the rotation angle of the handle 1 reaches alpha 1, the first micro switch 5 is turned on to trigger the electronic parking system to apply the brake, the braking force increases along with the increase of the rotation angle of the handle 1, and when the rotation angle of the handle 1 reaches alpha 2, the parking braking force reaches the maximum, that is, the driver can realize the linear control of the parking braking force by adjusting the rotation angle of the parking handle 1 between alpha 1 and alpha 2.
Claims (2)
1. The application method of the electronic parking control switch is characterized by comprising the following steps of:
the electronic parking control switch comprises a six-pin connector, a handle (1), an ejector rod (11), a return spring (2), a first sliding resistor (3), a second sliding resistor (4), a first micro switch (5) and a second micro switch (6), wherein the six-pin connector is provided with a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, the first sliding resistor (3) and the second sliding resistor (4) are redundant, reliability of output signals is effectively guaranteed, the handle (1) is movably connected with the upper end of the ejector rod (11), the lower end of the ejector rod (11) is movably connected with the return spring (2), the return spring (2) applies an initial acting force to the ejector rod (11) in an initial state, the ejector rod (11) is guaranteed to be positioned at the top, and the return force of the return spring (2) to the ejector rod (11) is gradually increased along with the downward movement of the ejector rod (11); the ejector rod (11) is respectively and movably connected with the sliding block of the first sliding resistor (3), the sliding block of the second sliding resistor (4), the first micro switch (5) and the second micro switch (6), so that the ejector rod (11) can drive the first sliding resistor (3), the second sliding resistor (4), the first micro switch (5) and the second micro switch (6) to move upwards or downwards simultaneously;
the first pin is connected with a public power supply ground, the second pin is connected with a public power supply positive electrode, the third pin is connected with a third resistor (51) and a first micro switch (5) in series through a circuit, a step voltage signal is output and used for waking up an electronic parking system controller, meanwhile, the signal is output to other controllers as a brake control signal, the effect of lighting a service brake lamp is achieved, the fourth pin is connected with the first resistor (31) and the first slide resistor (3) in series through a circuit, and different voltage signals are output along with the position change of a slide sheet of the first slide resistor (3); the fifth pin is connected with the second resistor (41) and the second sliding resistor (4) in series through a circuit, and outputs different voltage signals along with the sliding vane change of the second sliding resistor (4); the sixth pin is connected with the fourth resistor (61) and the second micro switch (6) in series through a circuit, a step voltage signal is output, the controller of the electronic parking system judges the operation intention of a driver by utilizing the step change of the voltage signal, and further the parking detection of the trailer is controlled, whether parking is implemented or not is judged, the first sliding resistor (3) is connected with the second sliding resistor (4) in parallel, and the first micro switch (5) is connected with the second micro switch (6) in parallel;
when a driver pulls the handle (1), the ejector rod (11) overcomes the force of the return spring (2) to drive the sliding block of the first sliding resistor (3) and the sliding block of the second sliding resistor (4) and the two groups of microswitches to move downwards;
when the first micro switch (5) is switched on or off, the third pin outputs a step voltage signal, the controller of the electronic parking system is awakened or enters a dormant state according to the voltage signal, and meanwhile, a message is sent to the CAN network to convey information of the action of implementing and releasing the brake to other controllers, and at the moment, the controller of the electronic parking system or the other controllers implement control of turning on or off a brake lamp according to the information;
when the second micro switch (6) is switched on or off, a step voltage signal is output by a sixth pin, and the electronic parking system controller judges the operation intention of a driver according to the voltage signal and the control logic, so that the parking detection of the trailer and the control of permanent parking or permanent parking releasing are implemented.
2. The method of claim 1, wherein the first sliding resistor (3) and the second sliding resistor (4) are replaced by displacement sensors.
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| CN201711496618.1A CN108016415B (en) | 2017-12-31 | 2017-12-31 | Electronic parking control switch and application method thereof |
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| CN201711496618.1A CN108016415B (en) | 2017-12-31 | 2017-12-31 | Electronic parking control switch and application method thereof |
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| CN108016415B true CN108016415B (en) | 2023-06-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102018213284A1 (en) * | 2018-08-08 | 2020-02-13 | Continental Teves Ag & Co. Ohg | Brake system for a motor vehicle |
| DE102018220583A1 (en) * | 2018-11-29 | 2020-06-04 | Robert Bosch Gmbh | Checking unit for an actuating device of an electrical device |
| CN112622910B (en) * | 2021-01-04 | 2022-06-07 | 一汽解放汽车有限公司 | Commercial vehicle temporary stop control system, control method, equipment and storage medium |
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