CN110733340B - Automobile accelerator pedal mistaken-stepping prevention system capable of automatically resetting and control method thereof - Google Patents
Automobile accelerator pedal mistaken-stepping prevention system capable of automatically resetting and control method thereof Download PDFInfo
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- CN110733340B CN110733340B CN201911133165.5A CN201911133165A CN110733340B CN 110733340 B CN110733340 B CN 110733340B CN 201911133165 A CN201911133165 A CN 201911133165A CN 110733340 B CN110733340 B CN 110733340B
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- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
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Abstract
The invention discloses an automatic resetting automobile accelerator pedal mistaken-stepping prevention system and a control method thereof. According to the automatic resetting false stepping prevention system for the automobile accelerator pedal and the control method thereof, the information acquisition module uses the photoelectric coded disc speed measurement sensor fixed on the end face of the speed measurement gear, and the sensor does not directly measure the speed information of the accelerator pedal but measures the rotating speed of the speed measurement gear, so that the automobile can have strong anti-interference capability in a complex driving environment, the reliability of the acquired speed data is greatly improved, meanwhile, the obstacle information provided by the ultrasonic radar is utilized to comprehensively judge whether the automobile accelerator pedal is mistakenly stepped, the misjudgment condition is greatly reduced, the existing operation habit does not need to be changed, and the operation of a driver is facilitated.
Description
Technical Field
The invention relates to the field of automobile auxiliary safe driving, in particular to an automatic resetting mistaken-stepping prevention system for an automobile accelerator pedal and a control method thereof.
Background
At present, with the development of economy and the improvement of industrialization level in China, cars have gone into thousands of households, and become one of the essential transportation means in the life of people. The most of the causes of the accident are that the brake pedal and the accelerator are controlled by the right foot during the driving of the automobile, the right foot pedals the accelerator during the normal running of the automobile, when the automobile needs to decelerate or stop, the right foot needs to be moved from the accelerator to the brake pedal and the brake pedal is pressed down forcibly to brake, however, when an emergency occurs, the attention of a person is not concentrated, the accelerator is pressed down by the brake pedal due to the operation error easily in a busy state, and the automobile can not stop but accelerate to cause a more serious traffic accident.
With the increase in the total number of automobiles, the cases of traffic accidents have increased year by year. According to related reports, in 2018, under the conditions that the automobile holding amount reaches 2.4 hundred million, drivers reach 4.09 million and the road traffic mileage reaches 486 kilometers, the number of people died due to traffic accidents in China is about 10 million. Among them, the accident rate caused by the driver mistakenly stepping on the accelerator pedal is up to 12.6% due to the reasons of unskilled technique, inattention, poor health state, overstrain and fatigue, influence of alcohol or medicines and the like. Aiming at the accidents, relevant researchers at home and abroad do a great deal of research work, and the obtained results are as follows: an accelerator pedal and a brake pedal are combined into a whole, but the original mechanical operation structure of the automobile is damaged by the pedals, the existing driving habit is changed, and the driver is difficult to adapt to the pedals; the emergency braking mechanical remedy device for the automobile mistakenly stepping on the accelerator pedal is adopted, the existing operation habit is not changed, but the problems of difficult installation, insufficient response sensitivity, excessively complex structure and the like exist; the system has high requirement on the barrier, the common barrier is not necessarily effective, and the response is slow.
Disclosure of Invention
In order to realize high automation degree and quick response, the invention provides an automobile accelerator pedal anti-misstep system capable of automatically resetting.
The invention is realized by adopting the following technical scheme: the utility model provides a but automatic re-setting's accelerator pedal prevents mistake and steps on system, be provided with accelerator pedal and speed measuring gear on the car, accelerator pedal prevents mistake and steps on system and includes:
the acquisition module comprises a photoelectric coded disc speed measurement sensor arranged on the speed measurement gear and an ultrasonic radar arranged on the vehicle head; the photoelectric coded disc speed measurement sensor is used for adopting the current speed F1 of the automobile; the ultrasonic radar is used for measuring a distance value F2 between the current vehicle speed F1 and an obstacle right in front of the automobile;
the MCU module is used for judging whether the distance value F2 is smaller than a preset distance threshold value F2 or not and judging whether the current vehicle speed F1 is larger than a preset vehicle speed threshold value F1 or not, and issuing a trigger signal if F1 is larger than or equal to F1 and F2 is smaller than or equal to F2; and
the execution module comprises a relay I, a transmission module, an electromagnetic ejection module and an ejection stopping module;
the transmission module comprises an incomplete rack with radian, a transmission gear, an optical axis and a ratchet wheel, wherein the incomplete rack is fixedly connected with the bottom of the accelerator pedal through a bolt and a nut, the incomplete rack is meshed with the transmission gear, the ratchet wheel is fixedly connected with the transmission gear through the optical axis, and one end, away from the ratchet wheel, of the optical axis is fixedly connected with the speed measuring gear;
the electromagnetic ejection module comprises an ejection shell, an electromagnet is arranged at the bottom of an inner cavity of the ejection shell, an ejection block which is matched with the ratchet wheel and has an inclined top surface is adsorbed above the electromagnet through magnetic force, a connecting rod which is rotatably connected with the ejection shell is arranged at one end, away from the electromagnet, of the ejection block, and a torsion spring for ejecting the ejection block is arranged on the connecting rod;
the bullet stopping module comprises a bullet stopping shell, a first rack, a reduction gear and a clockwork spring, the reduction gear is arranged inside the ejection shell and is driven by a direct current motor, the clockwork spring and the reduction gear are mutually jointed and can drive the reduction gear to rotate, the first rack is meshed with the reduction gear and is fixedly connected with the bullet stopping shell, and when the reduction gear rotates, the bullet stopping shell can be driven by the first rack to move;
the relay is triggered to be disconnected according to the trigger signal, the electromagnet is triggered to be powered off after the relay is disconnected, so that the ejection block loses magnetic force to eject and clamp the ratchet wheel, and the ratchet wheel enables the transmission gear to rotate, so that the accelerator pedal cannot be accelerated continuously; when F2 is greater than F2, the MCU module issues a reset signal, the direct current motor receives the reset signal and starts the direct current motor to drive the first rack to pull the bullet-stopping shell to move towards the direction of the bullet-stopping shell until the bullet-stopping block is adsorbed by the electromagnet, then the direct current motor stops working, and the first rack drives the bullet-stopping shell to return to the original position through the resilience force of the spring;
and the power supply module supplies power for the MCU module and the electromagnetic ejection module.
As a further improvement of the above scheme, the ejection block is provided with a limit baffle plate which is positioned on the ejection shell and used for preventing the ejection block from being pressed outwards.
As a further improvement of the above scheme, the electromagnetic ejection module includes an ejection housing, and the bullet stopping module further includes a manual reset module, where the manual reset module is a second rack engaged with the reduction gear, and the second rack and the first rack are mutually perpendicular and cross and do not contact each other.
As a further improvement of the scheme, one side of the ejection block close to the ejection stopping shell is an inclined plane.
As a further improvement of the scheme, the electromagnetic ejection module is also provided with a standby power supply, the standby power supply is controlled by the MCU module, and the standby power supply is electrically connected with a second relay which is electrically connected with the electromagnet and used for supplying power to the electromagnet.
As a further improvement of the scheme, the anti-mistaken-stepping system further comprises a power supply module, the power supply module comprises a low-voltage alarm module used for detecting power supply voltage, and when the voltage is lower than the critical voltage of the electromagnetic ejection module, the low-voltage alarm module triggers a buzzer alarm to alarm.
As a further improvement of the scheme, the power module is a charger, a vehicle-mounted power supply or a rechargeable lithium battery.
As a further improvement of the scheme, the anti-mistaken-stepping system further comprises an LED indicating lamp arranged in the automobile and used for indicating whether the anti-mistaken-stepping function is started or not.
The invention also discloses a control method of the automatic resetting false stepping prevention system for the automobile accelerator pedal, which is applied to the automatic resetting false stepping prevention system for the automobile accelerator pedal, and the control method comprises the following steps:
s1: acquiring the current speed F1 of the automobile and the distance F2 between the automobile and an obstacle in front at the current speed;
s2: judging whether the distance value F2 is smaller than a preset distance threshold value F2 and judging whether the current vehicle speed F1 is larger than a preset vehicle speed threshold value F1, and issuing a trigger signal if F1 is larger than or equal to F1 and F2 is smaller than or equal to F2;
s3: the relay is triggered to be disconnected according to the trigger signal, the electromagnet is triggered to be powered off after the relay is disconnected, so that the ejection block loses magnetic force to eject and clamp the ratchet wheel, and the ratchet wheel enables the transmission gear to rotate, so that the accelerator pedal cannot be accelerated continuously;
s4: when F2> F2, the direct current motor starts to drive the first rack to pull the bullet stopping shell to move towards the direction of the bullet stopping shell until the bullet stopping block is adsorbed by the electromagnet, then the direct current motor stops working, and the first rack drives the bullet stopping shell to return to the original position through the resilience force of the spring.
As a further improvement of the above aspect, the control method further includes the steps of:
the MCU module controls the second relay to be closed according to a false stepping prevention function cancellation signal, and the standby power supply continuously supplies power to the electromagnet, so that the electromagnet is always in a power-on state, the ejection block cannot clamp the ratchet wheel, and the false stepping prevention function is closed.
According to the automatic-resetting mistaken-stepping prevention system for the automobile accelerator pedal, the information acquisition module uses the photoelectric coded disc speed measurement sensor fixed on the end face of the speed measurement gear, and the sensor does not directly measure the speed information of the accelerator pedal but measures the rotating speed of the speed measurement gear, so that the automobile can have strong anti-interference capacity in a complex driving environment, the reliability of the acquired speed data is greatly improved, meanwhile, the obstacle information provided by the ultrasonic radar is utilized to comprehensively judge whether the automobile accelerator pedal is stepped by mistake, the misjudgment condition is greatly reduced, the existing operation habit does not need to be changed, and the operation of a driver is facilitated.
The system has an automatic reset function, once the distance F2 of the obstacle is detected to be larger than the threshold value F2, the electromagnetic ejection module can be restored to the initial state through the ejection stopping module, the problems that the traditional sensor cannot work accurately due to large interference and some devices do not consider recoverability, and the device can be reused after being damaged or needing complex operation after an accelerator or a brake is locked can be effectively solved, and accidents are effectively reduced.
Drawings
FIG. 1 is a schematic block diagram of an automatic resetting false stepping prevention system for an accelerator pedal of an automobile according to the present invention;
FIG. 2 is a control flow diagram of the automatic resetting false stepping prevention system for the accelerator pedal of the automobile;
FIG. 3 is a schematic structural diagram of an execution module of the automatic resetting false stepping prevention system for the accelerator pedal of the automobile;
FIG. 4 is a schematic structural diagram of a transmission module of the automatic resetting false stepping prevention system for the accelerator pedal of the automobile;
FIG. 5 is a schematic structural diagram of an electromagnetic ejection module and an ejection stopping module of the automatic resetting false stepping prevention system for the accelerator pedal of the automobile;
fig. 6 is a schematic view of the electromagnetic ejection module of fig. 5 according to the present invention;
fig. 7 is a cross-sectional view of fig. 6 of the present invention.
In the figure: the device comprises a signal acquisition module 1, an MCU module 2, an execution module 3, a power supply module 4, an accelerator pedal 5, a speed measurement gear 6, a relay I7, a transmission module 8, an incomplete rack 81, a transmission gear 82, an optical axis 83, a ratchet 84, an electromagnetic ejection module 9, an electromagnetic ejection shell 91, an electromagnet 92, an ejection block 93, a connecting rod 94, a limit baffle 95, an ejection stopping module 10, an ejection stopping shell 101, a first rack 102, a speed reduction gear 103, a clockwork spring 104, a manual reset module 11, a second rack 111, a standby power supply 12, a relay II 13 and a low-voltage alarm module 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The automatic resetting false stepping prevention system for the automobile accelerator pedal is applied to an automobile, is mainly interacted with the accelerator pedal 5 and the speed measuring gear 6 on the automobile and is used for preventing a driver from mistakenly stepping on the accelerator pedal;
referring to fig. 1, the automatic resetting false stepping prevention system for the accelerator pedal of the automobile comprises a signal acquisition module 1, an MCU module 2, an execution module 3 and a power module 4.
The signal acquisition module 1 includes that the double-circuit incremental photoelectric coding speed sensor on the 6 terminal surfaces of a speed measuring gear and one arrange the ultrasonic radar of locomotive in, the speed measuring sensor measures the rotational speed of direct mount direct measurement speed measuring gear 6 on speed measuring gear 6, but not the speed information on accelerator pedal 5, this makes the car can have very strong interference killing feature in the environment of traveling of complicacy, the speed data reliability of gathering promotes greatly, the distance between ultrasonic radar measurement locomotive and the barrier simultaneously, thereby judge whether the mistake is stepped on, make the condition greatly reduced of erroneous judgement.
The execution module 3 mainly comprises a relay I7, a transmission module 8, an electromagnetic ejection module 9 and an ejection stopping module 10.
Referring to fig. 3 and 4, the transmission module 8 includes an incomplete rack 81 with an arc, a transmission gear 82, an optical axis 83 and a ratchet 84, the incomplete rack 81 is fixedly connected to the bottom of the accelerator pedal 5 through a bolt and a nut, the incomplete rack 81 is engaged with the transmission gear 82, the ratchet 84 is fixedly connected to the transmission gear 82 through the optical axis 83, and one end of the optical axis 83, which is far away from the ratchet 84, is fixedly connected to the speed measurement gear 6.
Referring to fig. 3 and 5, the electromagnetic ejection module 9 includes an ejection housing 91, an electromagnet 92 is disposed at the bottom of an inner cavity of the ejection housing 91, an ejection block 93 with an inclined top surface is attracted above the electromagnet 92 by magnetic force, the ejection block 93 is disposed as an inclined surface to smoothly combine the ejection-stopping housing 101 and the ejection block 93 and better transmit a longitudinal pressing force, a connecting rod 94 rotatably connected to the ejection housing 91 is disposed at an end of the ejection block 93 away from the electromagnet 92, and a torsion spring for ejecting the ejection block 93 is disposed on the connecting rod 94.
The bullet stopping module 10 includes a bullet stopping housing 101, a first rack 102, a reduction gear 103 and a clockwork spring 104, the reduction gear 103 is disposed inside the ejection housing 91 and is driven by a dc motor, the clockwork spring 104 and the reduction gear 103 are engaged with each other and can drive the reduction gear 103 to rotate, the first rack 102 is engaged with the reduction gear 103 and is fixedly connected with the bullet stopping housing 101, when the reduction gear 103 rotates, the bullet stopping housing 101 can be driven by the first rack 102 to move, the ejection housing 91 and the bullet stopping housing 101 are respectively provided with slots matched with the first rack 102 and the second rack 111, so that when the bullet stopping housing 101 moves toward the ejection housing 91, the bullet stopping housing 101 can wrap the entire ejection housing, and the first rack 102 and the second rack 111 can also enter the slots, and cannot obstruct the movement of the bullet stopping housing 101.
Referring to fig. 2, the MCU module 2, i.e. the control module, is mainly composed of a minimum system of an STM32F103RBT6 single chip microcomputer, and is specifically a microprocessor having an input capture function timer, which can not only utilize the filter function of its input capture register to eliminate the interference signals caused by the vibration of the vehicle, but also receive the pulse signals output by the photodiode in the photoelectric coded speed sensor, i.e. the current speed F1 of the vehicle and the high level signals output by the ultrasonic radar, i.e. the distance value F2 between the vehicle and the obstacle, and compare the current speed F1 and the distance value F2 with the internally set speed threshold F1 and distance threshold F2 by a software control program written in the chip, if F1 is not less than F1 and F2 is not more than F2, a trigger signal is issued, the relay-7 is triggered to open according to the trigger electromagnet 92 after the relay-7 is open, thereby ejecting the block 93 loses the magnetic force to latch the ratchet 84, the ratchet wheel 84 enables the transmission gear 82 to rotate, so that the accelerator pedal 5 cannot accelerate continuously, in the process of driving continuously, when the speed is F2> F2, the MCU module 2 issues a reset signal, the direct current motor receives the reset signal to start and drives the first rack 102 to pull the bullet-stopping shell 101 to move towards the direction of the ejection shell 91 until the ejection block 92 is adsorbed by the electromagnet 92, then the direct current motor stops working, and the first rack 102 drives the bullet-stopping shell 101 to return to the original position through the resilience force of the spring 104.
Specifically, when the electromagnetic ejection module 9 is not operated, the ejection block 93 is in a state of being attracted by the electromagnet 92, when the relay I7 is controlled by the single chip microcomputer to be turned off, the magnetism of the electromagnetic ejection module 9 disappears, the ejection block 93 ejects and clamps the ratchet 84 under the action of the torsion spring, at this time, because the upper surface of the ejection block 93 has a certain inclination, a tendency of pushing the ejection block 93 outwards exists, a limit baffle 95 which is positioned on the ejection shell 91 and used for preventing the ejection block 93 from being pushed outwards is arranged on the ejection block 93, after the ejection block 93 clamps the ratchet 84, the transmission gear 82 stops rotating, because the transmission gear 82 is meshed with the incomplete rack 81 and the incomplete rack 81 is fixedly arranged at the bottom of the accelerator pedal 5, the accelerator pedal 5 is limited from continuing to move downwards, because the ratchet 84 has the characteristic of single-phase force transmission, the accelerator pedal 5 is loosened, the accelerator pedal 5 can only return to the initial position upwards and cannot move downwards to accelerate the automobile, so that mistaken stepping is prevented.
When the ultrasonic radar measures that the distance F2 of the obstacle exceeds the threshold value F2, the direct current motor drives the reduction gear 103 to rotate, so that the first rack 102 is driven to move, the bullet stopping shell 101 is driven to transversely approach the electromagnetic ejection module 9, so that the ejection block 93 is restored to the original state by the pressing and is adsorbed by the electromagnet 92 again, and the acceleration can be continued, at this time, because the clockwork spring 104 is engaged on the reduction gear 103, the spring 104 is driven to accumulate elastic potential energy in the process of rotating the reduction gear 103, and when the direct current motor does not work, the speed reducing gear 103 is reversely rotated under the action of the clockwork spring 104, so that the bullet stopping module 10 is restored to the original state, the system can perform the next false stepping prevention operation again without influencing the normal acceleration and deceleration action, in order to smoothly combine the ejection block 93 with the ejection housing 101 and to better transmit the longitudinal pressing force, the side of the ejection block 93 opposite to the ejection housing 101 is designed to be an inclined surface.
In this embodiment, the bullet stopping module 10 is further provided with a manual reset module 11, the manual reset module 11 is a second rack 111 engaged with the reduction gear 103, the second rack 111 and the first rack 102 are perpendicular to each other and do not contact with each other, when the dc motor fails, the second rack 111 starts to function, and a driver can push the second rack 111 with a hand or a foot to rotate the reduction gear 103, so as to drive the first rack 102 to move, thereby driving the bullet stopping housing 101 to return to the original position.
The power module 4 can be the treasured that charges, vehicle mounted power or rechargeable lithium cell, directly be the system power supply through the data line, specifically can launch the module 9 for MCU module 2 and electromagnetism and supply power, execution module 3 can be served as the power and be furnished with a low pressure alarm module 14 by rechargeable lithium cell, the theory of operation of low pressure alarm module 14 is detection mains voltage, when voltage is about to be less than the critical voltage that the electro-magnet 92 can adsorb and launch block 93, the buzzer reports to the police, remind the driver to change the battery.
In the embodiment, in order to meet the requirement that a driver does not need to prevent mistaken stepping under partial road conditions, the electromagnetic ejection module 9 is provided with a set of standby power supply, the standby power supply 12 is controlled by a key on an automobile, the standby power supply 12 is electrically connected with a second relay 13, the second relay 13 is electrically connected with the electromagnetic ejection module 9, the second relay 13 is in an off state when the mistaken stepping prevention function is needed, when the driver does not need the mistaken stepping prevention function, the key is pressed down, the second relay 13 is closed, the standby power supply 12 and a conventional power supply simultaneously supply power for the electromagnet 92, at the moment, whether the first relay 7 is on or off or not, the electromagnet 92 is in an on state, the ejection block 93 cannot be ejected, at the moment, the electromagnetic ejection module 9 is in an off state, when the mistaken stepping prevention function is needed, the key is pressed down again, the second relay 13 is disconnected, and the function of preventing mistaken stepping is recovered. And meanwhile, an LED indicating lamp is arranged to remind a driver whether the driver is in a state with an anti-misstep function or not, and when the anti-misstep function is cancelled, the LED can be lightened.
The embodiment also discloses a control method of the automobile accelerator pedal mistaken-stepping prevention system capable of automatically resetting, which comprises the following steps:
s1: acquiring the current speed F1 of the automobile and the distance F2 between the automobile and an obstacle in front at the current speed;
s2: judging whether the distance value F2 is smaller than a preset distance threshold value F2 and judging whether the current vehicle speed F1 is larger than a preset vehicle speed threshold value F1, and issuing a trigger signal if F1 is larger than or equal to F1 and F2 is smaller than or equal to F2;
s3: the relay I7 is triggered to be disconnected according to the trigger signal, after the relay I7 is disconnected, the electromagnet 92 is triggered to be powered off, so that the ejection block 93 loses magnetic force to eject and clamp the ratchet 84, and the ratchet 84 enables the transmission gear 82 to rotate, so that the accelerator pedal 5 cannot be accelerated continuously;
s4: when F2> F2, the direct current motor works to drive the bullet-stopping shell 101 to move towards the direction of the ejection shell 91 through the first rack 102 until the ejection block 92 is adsorbed by the electromagnet 92, and then the direct current motor stops working to drive the bullet-stopping shell 101 to return to the original position through the resilience force of the clockwork spring 104.
When the vehicle runs on a road without the false stepping prevention function, the MCU module 2 controls the relay II 13 to be closed according to a false stepping prevention function cancellation signal, the cancellation signal can be triggered by a driver pressing a switch on the vehicle and can also be issued through a touch screen, then the standby power supply 12 continuously supplies power to the electromagnet 92, the electromagnet 92 is always in a power-on state, the ejection block 93 cannot block the ratchet 84, and the false stepping prevention function is closed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a but automatic re-setting's accelerator pedal prevents mistake and steps on system, be equipped with accelerator pedal (5) and gear (6) that tests the speed on the car, its characterized in that, prevent mistake and step on the system and include:
the acquisition module (1) comprises a photoelectric coded disc speed measurement sensor arranged on the speed measurement gear (6) and an ultrasonic radar arranged on the vehicle head; the photoelectric coded disc speed measurement sensor is used for acquiring the current speed F1 of the automobile; the ultrasonic radar is used for measuring a distance value F2 between the current vehicle speed F1 and an obstacle right in front of the automobile;
the MCU module (2) is used for judging whether the distance value F2 is smaller than a preset distance threshold value F2 or not and judging whether the current vehicle speed F1 is larger than a preset vehicle speed threshold value F1 or not, and issuing a trigger signal if F1 is larger than or equal to F1 and F2 is smaller than or equal to F2; and
the execution module (3) comprises a relay I (7), a transmission module (8), an electromagnetic ejection module (9) and an ejection stopping module (10);
the transmission module (8) comprises an incomplete rack (81) with radian, a transmission gear (82), an optical axis (83) and a ratchet wheel (84), wherein the incomplete rack (81) is fixedly connected with the bottom of the accelerator pedal (5) through bolts and nuts, the incomplete rack (81) is meshed with the transmission gear (82), the ratchet wheel (84) is fixedly connected with the transmission gear (82) through the optical axis (83), and one end, far away from the ratchet wheel (84), of the optical axis (83) is fixedly connected with the speed measuring gear (6);
the electromagnetic ejection module (9) comprises an ejection shell (91), an electromagnet (92) is arranged at the bottom of an inner cavity of the ejection shell (91), an ejection block (93) which is matched with the ratchet 84 and has an inclined top surface is adsorbed above the electromagnet (92) through magnetic force, a connecting rod (94) which is rotatably connected with the ejection shell (91) is arranged at one end, away from the electromagnet (92), of the ejection block (93), and a torsion spring for ejecting the ejection block (93) is arranged on the connecting rod (94);
the bullet stopping module (10) comprises a bullet stopping shell (101), a first rack (102), a reduction gear (103) and a clockwork spring (104), wherein the reduction gear (103) is arranged inside the bullet stopping shell (91) and is driven by a direct current motor, the clockwork spring (104) is mutually jointed with the reduction gear (103) and can drive the reduction gear (103) to rotate, the first rack (102) is meshed with the reduction gear (103) and is fixedly connected with the bullet stopping shell (101), and when the reduction gear (103) rotates, the bullet stopping shell (101) can be driven by the first rack (102) to move;
the relay I (7) is triggered to be disconnected according to the trigger signal, the electromagnet (92) is triggered to be powered off after the relay I (7) is disconnected, so that the ejection block (93) loses magnetic force to eject the clamping ratchet wheel (84), and the ratchet wheel (84) enables the transmission gear (82) to rotate, so that the accelerator pedal (5) cannot be accelerated continuously;
if the MCU module (2) collects F2> F2, a reset signal is sent, the direct current motor receives the reset signal to start and drives the first rack (102) to pull the bullet-stopping shell (101) to move towards the direction of the bullet-stopping shell (91) until the bullet-stopping block (92) is adsorbed by the electromagnet (92), then the direct current motor stops working, and then the first rack (102) drives the bullet-stopping shell (101) to return to the original position through the resilience force of the clockwork spring (104).
2. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: the ejection block (93) is provided with a limit baffle (95) which is positioned on the ejection shell (91) and used for preventing the ejection block (93) from being pressed outwards.
3. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: the bullet stopping module (10) further comprises a manual reset module (11), the manual reset module (11) is a second rack (111) meshed with the reduction gear (103), and the second rack (111) and the first rack (102) are mutually perpendicular and are not in contact with each other.
4. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: one side of the ejection block (93) close to the ejection stopping shell (101) is an inclined plane.
5. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: the electromagnetic ejection module (9) is further provided with a standby power supply (12), the standby power supply (12) is controlled by the MCU module (2), the standby power supply (12) is electrically connected with a second relay (13), and the second relay (13) is electrically connected with the electromagnet (92) and used for supplying power to the electromagnet (92).
6. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: the mistaken-stepping prevention system further comprises a power supply module (4), the power supply module (4) comprises a low-voltage alarm module (14) used for detecting power supply voltage, and when the voltage is lower than the critical voltage of the electromagnetic ejection module (9), the low-voltage alarm module (14) triggers a buzzer alarm to alarm.
7. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 6, wherein: the power module (4) is a charger baby, a vehicle-mounted power supply or a rechargeable lithium battery.
8. The automatic resettable accelerator pedal false stepping prevention system of an automobile according to claim 1, wherein: the mistaken stepping prevention system further comprises an LED indicating lamp arranged in the automobile and used for indicating whether the mistaken stepping prevention function is started or not.
9. A control method of an automatic resetting false stepping prevention system for an automobile accelerator pedal according to any one of claims 1 to 8, characterized in that: the control method comprises the following steps:
s1: acquiring the current speed F1 of the automobile and the distance F2 between the automobile and an obstacle in front at the current speed;
s2: judging whether the distance value F2 is smaller than a preset distance threshold value F2 and judging whether the current vehicle speed F1 is larger than a preset vehicle speed threshold value F1, and issuing a trigger signal if F1 is larger than or equal to F1 and F2 is smaller than or equal to F2;
s3: the relay I (7) is triggered to be disconnected according to the trigger signal, after the relay I (7) is disconnected, the electromagnet (92) is triggered to be powered off, so that the ejection block (93) loses magnetic force and ejects the clamping ratchet wheel (84), and the ratchet wheel (84) enables the transmission gear (82) to rotate, so that the accelerator pedal (5) cannot be accelerated continuously;
s4: if F2 is greater than F2, the direct current motor works to drive the first rack (102) to pull the bullet stopping shell (101) to move towards the direction of the bullet ejecting shell (91) until the bullet ejecting block (92) is adsorbed by the electromagnet (92), then the direct current motor stops working, and the first rack (102) drives the bullet stopping shell (101) to return to the original position through the resilience force of the clockwork spring (104).
10. The control method of the automatic resetting false stepping prevention system for the accelerator pedal of the automobile as claimed in claim 9, wherein: the control method further comprises the steps of:
the MCU module (2) controls the relay II (13) to be closed according to a false stepping prevention function cancellation signal, the standby power supply (12) continuously supplies power to the electromagnet (92), the electromagnet (92) is always in a power-on state, the ejection block (93) cannot clamp the ratchet wheel (84), and the false stepping prevention function is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133165.5A CN110733340B (en) | 2019-11-19 | 2019-11-19 | Automobile accelerator pedal mistaken-stepping prevention system capable of automatically resetting and control method thereof |
Applications Claiming Priority (1)
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| CN201911133165.5A CN110733340B (en) | 2019-11-19 | 2019-11-19 | Automobile accelerator pedal mistaken-stepping prevention system capable of automatically resetting and control method thereof |
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| CN106740101A (en) * | 2016-08-31 | 2017-05-31 | 广西民族大学 | A kind of protector and its application method prevented phenomenon of taking throttle as brake maloperation |
| CN109677263A (en) * | 2019-02-25 | 2019-04-26 | 张茂和 | A kind of accelerator anti-false step linkage brake safety device |
| CN109747413A (en) * | 2019-03-11 | 2019-05-14 | 合肥工业大学 | A kind of intelligent protection system and its intelligent protection method of anti-misoperation accelerator pedal |
| DE102017220520A1 (en) * | 2017-11-16 | 2019-05-16 | Continental Automotive Gmbh | Control unit for pedal system and pedal system |
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| KR20020055066A (en) * | 2000-12-28 | 2002-07-08 | 이계안 | a pedal of a multi purpose vehicle |
| KR20040040071A (en) * | 2002-11-06 | 2004-05-12 | 현대자동차주식회사 | effort variable accelerator pedal system |
| CN106740101A (en) * | 2016-08-31 | 2017-05-31 | 广西民族大学 | A kind of protector and its application method prevented phenomenon of taking throttle as brake maloperation |
| DE102017220520A1 (en) * | 2017-11-16 | 2019-05-16 | Continental Automotive Gmbh | Control unit for pedal system and pedal system |
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