CN111319463A - Intelligent recognition and control system and method for mistakenly using accelerator as brake - Google Patents
Intelligent recognition and control system and method for mistakenly using accelerator as brake Download PDFInfo
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- CN111319463A CN111319463A CN202010264491.6A CN202010264491A CN111319463A CN 111319463 A CN111319463 A CN 111319463A CN 202010264491 A CN202010264491 A CN 202010264491A CN 111319463 A CN111319463 A CN 111319463A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000009795 derivation Methods 0.000 claims description 11
- 230000007935 neutral effect Effects 0.000 claims description 11
- 206010039203 Road traffic accident Diseases 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
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- 230000004044 response Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to accident or emergency, e.g. deceleration, tilt of vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
- B60T11/046—Using cables
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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
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Regulating Braking Force (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
The invention relates to an intelligent recognition and control system for mistakenly using an accelerator as a brake, which comprises an ECU controller, an electronic accelerator angular displacement sensor/a traditional accelerator pedal rotating speed sensor, a steering wheel rotating angle sensor, an automobile left steering lamp control switch, automobile gear switches, an electronic hand brake, an oil injection control system, an alarm signal lamp, an automatic brake system and a flexible inhaul cable. The control method of the intelligent recognition and control system comprises the steps that an ECU controller receives vehicle output signals, determines the working state of a vehicle, and sets the angular acceleration threshold value of an accelerator pedal under different working states of the vehicle; the ECU controller receives an accelerator pedal angular displacement or rotating speed signal, calculates the angular acceleration value and judges whether the accelerator is stepped on by mistake; and starting an automatic braking system to realize emergency braking after the misstep is judged. The intelligent recognition and control system for mistakenly using the accelerator as the brake can effectively avoid traffic accidents caused by mistakenly using the accelerator as the brake by a driver and reduce the occurrence rate of the traffic accidents.
Description
Technical Field
The invention relates to the technical field of intelligent recognition control, in particular to an intelligent recognition and control system and method for mistakenly using an accelerator as a brake.
Background
With the increasing of vehicles, traffic accidents on roads are increased, drivers report that the drivers mistakenly take the accelerator as a brake to cause the traffic accidents every year, no matter whether the drivers are old or new, the drivers are in sudden situations, and the drivers are easy to mistakenly step on the accelerator due to mental stress or improper operation. Therefore, it is necessary to design a new technical solution to comprehensively solve the problems in the prior art.
The invention is suitable for the vehicle adopting the electronic accelerator and the vehicle adopting the traditional non-electronic accelerator, if the vehicle adopts the electronic accelerator, the angular acceleration of the accelerator pedal is obtained by secondary derivation of the angular displacement signal output by the electronic accelerator sensor; if the vehicle adopts a traditional non-electronic accelerator, the angular acceleration of the accelerator pedal is obtained by once derivation of the output value of a rotating speed sensor, and the rotating speed sensor is arranged on a rotating shaft of the non-electronic accelerator pedal. The ECU controller receives angular displacement or rotating speed signals of the accelerator pedal, calculates to obtain an angular acceleration value, judges whether the accelerator is stepped on by mistake, and starts an automatic braking system to realize emergency braking after judging that the accelerator is stepped on by mistake.
Disclosure of Invention
The invention aims to provide an intelligent recognition and control system and method for mistakenly using an accelerator as a brake, which can effectively avoid traffic accidents caused by mistakenly using the accelerator as the brake by a driver.
In order to solve the technical problems, the invention adopts the following technical scheme:
an intelligent recognition and control system for mistakenly using an accelerator as a brake comprises an ECU (electronic control Unit), an electronic accelerator angular displacement sensor/a traditional accelerator pedal rotating speed sensor, a steering wheel rotating angle sensor, an automobile left steering lamp control switch, each gear switch of an automobile, an alarm signal lamp, an electronic hand brake, an oil injection control system and an automatic brake system, wherein the automatic brake system comprises a brake pedal, a vacuum booster, a brake hydraulic cylinder, a two-position four-way electromagnetic reversing valve, a hydraulic pump, a filter, an oil tank and an overflow valve; the automatic brake system also comprises a flexible cable, the back side of the brake pedal is connected with a piston rod in the brake hydraulic cylinder through the flexible cable, a left oil cavity and a right oil cavity of the brake hydraulic cylinder are respectively connected with a hydraulic pump, an overflow valve and an oil tank through a two-position four-way electromagnetic directional valve, and the hydraulic pump is connected with the oil tank through a filter; and a brake signal output end YA of the ECU controller is connected with an electromagnet YA1 of the two-position four-way electromagnetic directional valve.
The control method of the intelligent recognition and control system for mistakenly using the accelerator as the brake comprises the following steps:
1) setting threshold values of angular acceleration of an accelerator pedal under different working states of a vehicle, wherein the different working states of the vehicle comprise a forward gear engaging state, a reverse gear engaging state, a neutral gear engaging state and an overtaking state;
2) the ECU controller receives an output signal of the vehicle and judges the working state of the vehicle; the output signals of the vehicle comprise a vehicle forward gear engaging signal, a vehicle reverse gear engaging signal, a vehicle neutral gear engaging signal, a vehicle left steering lamp turning-on signal and a vehicle steering wheel angle sensor signal;
3) the ECU controller receives angular displacement or rotating speed signals of the accelerator pedal and calculates to obtain an acceleration value, the working state of the vehicle is determined, and then the ECU controller compares the calculated angular acceleration value of the accelerator pedal with an angular acceleration threshold value of the accelerator pedal in the corresponding working state to judge whether the accelerator is stepped on by mistake;
4) if the ECU controller judges that the accelerator is stepped on by mistake, the ECU controller outputs an engine oil-cut control signal, simultaneously starts an electronic hand brake signal and a brake signal YA and lights an alarm signal lamp, after an electromagnet YA1 of the two-position four-way electromagnetic directional valve is electrified, the two-position four-way electromagnetic directional valve works at the left position, a brake hydraulic cylinder is close to an oil cavity at the side of the brake pedal to take oil, a piston rod is pushed to move towards the side far away from the brake pedal, a flexible cable pulls the brake pedal to rotate clockwise, and the vehicle is braked emergently;
5) if the ECU controller judges that the accelerator is not stepped on by mistake, the ECU controller does not output a signal, the two-position four-way electromagnetic directional valve works at the right position, the oil cavity of the brake hydraulic cylinder far away from the brake pedal side keeps oil inlet, the piston rod is pushed to be close to the brake pedal side and keeps the state continuously, and at the moment, the flexible inhaul cable has no tension force and does not have any influence on the brake pedal.
When the vehicle is in a forward gear engaging state, the threshold value of the angular acceleration of the accelerator pedal is a normal value obtained by debugging;
when the vehicle is in a reverse gear state, the threshold value of the angular acceleration of the accelerator pedal is 75-85% of the normal value;
when the vehicle is in a neutral gear state, the angular acceleration of the accelerator pedal is not provided with a threshold value;
when the vehicle is in the overtaking state, the threshold value of the angular acceleration of the accelerator pedal is 115-125% of the normal value.
In addition, the intelligent identification and control system for mistakenly using the accelerator as the brake is suitable for vehicles adopting the electronic accelerator and also suitable for vehicles adopting the traditional non-electronic accelerator, and if the vehicles adopt the electronic accelerator, the angular acceleration of the accelerator pedal is obtained by carrying out secondary derivation on the angular displacement signal output by the electronic accelerator sensor; if the vehicle adopts a traditional non-electronic accelerator, the angular acceleration of the accelerator pedal is obtained by once derivation of the output value of a rotating speed sensor, and the rotating speed sensor is arranged on a rotating shaft of the non-electronic accelerator pedal.
The intelligent identification and control system for mistakenly using the accelerator as the brake is provided in the technical scheme, and the flexible inhaul cable is added on the basis of the hydraulic system so as to realize emergency braking when the accelerator is mistakenly used as the brake; the method compares the actual angular acceleration value of the accelerator pedal (obtained by derivation calculation of the angular acceleration value of the accelerator pedal) with a threshold value, can directly acquire an angular displacement signal output by an electronic accelerator sensor of an automobile adopting the electronic accelerator, obtains the angular acceleration value after secondary derivation, needs to install a rotating speed sensor on a rotating shaft of the accelerator pedal of the traditional automobile adopting the non-electronic accelerator, obtains the angular acceleration value after derivation of the output value, constantly compares, analyzes and identifies the actual angular acceleration value of the accelerator pedal with the preset threshold values under different working states by an ECU controller, sends a signal to cut off the oil of an engine and starts an electronic hand brake signal lamp when identifying that a driver steps on the accelerator by mistake, and simultaneously starts an automatic brake system which wrongly turns on the accelerator as a brake, wherein the driver steps on the accelerator by foot, but the effect is the same as that of the driver stepping on the brake, so that the automobile is not accelerated suddenly but braked emergently. The intelligent recognition and control system for mistakenly using the accelerator as the brake can quickly and efficiently carry out intelligent recognition and take effective control measures to prevent accidents.
Drawings
FIG. 1 is a schematic diagram of an electrical interface control circuit of the intelligent identification and control system for mistakenly using an accelerator as a brake according to the present invention;
FIG. 2 is a flow chart of the control method of the intelligent identification and control system for mistakenly using the accelerator as the brake according to the invention;
FIG. 3 is a schematic diagram of an automatic braking system for mistakenly using an accelerator as a brake and the working principle thereof.
In the figure: 1. a brake pedal; 2. a vacuum booster; 3. a flexible cable; 4. a brake hydraulic cylinder; 5. a two-position four-way electromagnetic directional valve; 6. a hydraulic pump; 7. a filter; 8. an oil tank; 9. an overflow valve.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.
The technical scheme adopted by the invention is shown in figure 1, and the intelligent recognition and control system for mistakenly using the accelerator as the brake comprises an ECU controller, an electronic accelerator angular displacement sensor or a traditional accelerator pedal rotating speed sensor, a steering wheel rotating angle sensor, an automobile left steering lamp control switch, automobile gear switches, an alarm signal lamp, an electronic hand brake and oil injection control system, an automatic brake system and the like; in fig. 1, DZYM is an input signal port for angular displacement of an electronic accelerator pedal, CTYM is an input signal port of a rotation speed sensor additionally installed on a conventional accelerator pedal rotating shaft (for an automobile using a conventional non-electronic accelerator, a rotation speed sensor needs to be installed on the accelerator pedal rotating shaft), QJD is an input signal port for forward gear of the automobile, DCD is an input signal port for reverse gear of the automobile, KD is an input signal port for neutral gear of the automobile, ZZXD is an input signal port for left turn signal of the automobile, FXPZJ is an input signal port for a steering wheel angle sensor, DY is an output signal port for fuel cut control of an engine, DZSS is an output signal port for control of an electronic manual brake, YA is an output signal port for an intelligent brake, and JBD is an alarm signal lamp.
The control method of the intelligent recognition and control system for mistakenly using the accelerator as the brake comprises the following steps:
1) setting threshold values of angular acceleration of an accelerator pedal of a vehicle in different working states, wherein the different working states of the vehicle comprise a forward gear engaging state, a reverse gear engaging state, a neutral gear engaging state and an overtaking state;
2) the ECU controller receives an output signal of the vehicle and judges the working state of the vehicle; the output signals of the vehicle comprise a vehicle forward gear engaging signal, a vehicle reverse gear engaging signal, a vehicle neutral gear engaging signal, a vehicle left steering lamp starting signal and a vehicle steering wheel corner sensor signal;
3) the invention is suitable for the automobile adopting the electronic throttle and the traditional non-electronic throttle; the angular acceleration value of the accelerator pedal is obtained through derivation calculation, for an automobile adopting an electronic accelerator, an angular displacement signal output by an electronic accelerator sensor can be directly collected, and the angular acceleration value is obtained through secondary derivation; the ECU controller compares the actual angular acceleration value of the accelerator pedal with the threshold value of the angular acceleration of the accelerator pedal in a corresponding working state at any moment, and judges whether the accelerator is stepped on by mistake;
4) if the ECU controller judges that the accelerator is stepped on by mistake, the ECU controller outputs an engine oil-cut control signal, simultaneously starts an electronic hand brake signal and an intelligent brake signal YA and lights an alarm signal lamp, an electromagnet YA1 of a two-position four-way electromagnetic directional valve in the automatic brake system is electrified, the electromagnetic directional valve works at the left position, a brake hydraulic cylinder is close to an oil cavity at the side of the brake pedal and is filled with oil, a piston rod is pushed to move away from the side of the brake pedal, a flexible cable pulls the brake pedal to rotate clockwise, and the vehicle is braked emergently;
5) under the normal condition, namely the ECU controller judges that the accelerator is not stepped on by mistake, the ECU controller does not output signals, the right position of a two-position four-way electromagnetic directional valve in the automatic braking system works, a brake hydraulic cylinder is far away from an oil cavity on the side of a brake pedal to keep oil feeding, a piston rod is pushed to be close to the side of the brake pedal and keeps the state continuously, at the moment, a flexible inhaul cable keeps proper tensioning but basically has no tensioning force, the brake pedal is not influenced, the braking effect of the automobile is not influenced, and a driver can normally brake the automobile without any influence.
Fig. 2 is a flowchart of a control method of the intelligent recognition and control system for mistakenly using the accelerator as the brake, the ECU controller performs recognition and judgment according to whether the angular acceleration of the accelerator pedal action exceeds a threshold value, and sets the threshold value and performs recognition and judgment according to the following conditions:
(1) when the automobile is in a starting and normal driving state (a forward gear is engaged), the threshold value is set to be a normal value (a specific numerical value is obtained through actual debugging), and when the angular acceleration of the action of the accelerator pedal exceeds the threshold value, the condition that the driver steps on the accelerator by mistake is determined;
(2) in a reverse state (reverse gear), a driver should not step on the accelerator suddenly unless the driver steps on the accelerator mistakenly, so that the threshold value in the reverse state is set to be 75-85% of the normal value and the middle value is 80% for safety;
(3) in the overtaking state, the requirement of quickly overtaking by stepping on the accelerator objectively exists, the threshold value can be increased to 115-125% of the normal value, and the intermediate value can be 120%; the overtaking sign is that a left steering lamp is turned on and a steering wheel angle sensor has reading, generally speaking, the rapid acceleration is unlikely to happen on a curve, the steering wheel is turned to the left anticlockwise at the beginning (the steering wheel angle is set to be small and large), namely the accelerator is not required to be stepped suddenly when the overtaking vehicle is ready to cut into a lane, and the threshold value under the condition is still set to be a normal value; the method is characterized in that the accelerator is suddenly stepped on only when the automobile completely enters a passing lane, clockwise turns back the steering wheel and approaches to return and reach a set value (the steering wheel angle is reduced from large to small and approaches to the set value, and the set value is near a zero value and slightly larger than the zero value), the rapid passing is prepared, the set angular acceleration threshold value is properly increased (120%) compared with a normal value for facilitating the passing, but the sudden stepping on of the brake is also possible to suddenly find that the opposite vehicle comes and the traffic accident is caused, and the accelerator is also likely to be mistakenly used as the brake due to the excessive stress, so that the proper accelerator pedal angular acceleration threshold value is necessary to be set under the condition of determining the passing; in addition, as the overtaking is carried out in the advancing state of the automobile, before the overtaking state signal is formed, the angular acceleration threshold value of the accelerator pedal of the automobile is set according to the normal value, once the overtaking state is determined, the system immediately uses the overtaking state threshold value to replace the normal threshold value, and the system can immediately recover to the normal threshold value after the overtaking state signal disappears;
(4) when the automobile is in a neutral gear state (neutral gear is hung), and a maintenance worker overhauls the automobile in a specific project, the accelerator may need to be stepped on suddenly, and at the moment, the intelligent identification system does not respond.
As described above, the ECU controller sets a corresponding angular acceleration threshold value (target value) according to the current driving state of the automobile, compares the angular acceleration threshold value with an angular acceleration value actually input from the accelerator pedal and obtained after calculation processing, determines a corresponding control measure according to the comparison result, and does not make any response if the actual value is smaller than the threshold value; if the actual value exceeds the threshold value, the following response is intelligently made:
(1) sending a fuel cut-off instruction to an engine ECU (electronic control Unit) to control an electromagnetic fuel injector to stop injecting fuel;
(2) sending an instruction, starting an electronic hand brake system and lightening an alarm signal lamp;
(3) the operation principle of the automatic braking system which is started to mistakenly use the accelerator as the brake is shown in figure 3.
FIG. 3 includes a brake pedal 1, a vacuum booster 2, a flexible cable 3, a brake hydraulic cylinder 4, a two-position four-way electromagnetic directional valve 5, a hydraulic pump 6, a filter 7, an oil tank 8 and an overflow valve 9, a plunger push rod of the vacuum booster 2 is connected with the brake pedal 1 through a mechanical hinge, the brake hydraulic cylinder 4 is arranged on the back side of the brake pedal 1, the back side of the brake pedal 1 is connected with a piston rod in the brake hydraulic cylinder 4 through the flexible cable 3, and left and right oil cavities of the brake hydraulic cylinder 4 are respectively connected with the hydraulic pump 6, the overflow valve 9 and the oil tank through the two-position four-way electromagnetic directional valve 5 (here, if the left cavity of the hydraulic cylinder is connected with the hydraulic pump and the overflow valve, the right cavity is connected with the oil tank; and a brake signal output end YA of the ECU controller is connected with an electromagnet YA1 of the two-position four-way electromagnetic directional valve 5. Under the normal driving condition, when the driver normally stepped on the throttle, the ECU controller shown in fig. 1 has no output signal, YA1 is not electrified, the right position of the two-position four-way electromagnetic directional valve works, the left cavity of the brake hydraulic cylinder is filled with oil, and the piston rod is pushed to the rightmost end. The piston rod is connected with the brake pedal by adopting a flexible inhaul cable, and the flexible inhaul cable is adjusted to be in a proper tensioning state without tension force under the condition that the brake pedal is not stepped; the flexible cable is adopted, and no tension force exists under normal conditions, so that the brake operation is not influenced, the piston rod is not influenced or subjected to any additional blocking force when the brake pedal is stepped, the brake pedal is not blocked, and the normal brake can be completely realized. When the intelligent recognition and control system which wrongly uses the accelerator as the brake recognizes that the driver mistakenly steps on the accelerator, the ECU controller outputs a brake signal YA, an electromagnet YA1 of a two-position four-way electromagnetic directional valve in the automatic brake system is electrified, the electromagnetic directional valve works at the left position, oil enters a right cavity of a hydraulic cylinder, a piston rod is pushed to move leftwards quickly, a brake pedal mechanism is pulled to rotate clockwise quickly through a flexible inhaul cable, the effect of the brake pedal mechanism is completely the same as that of the driver who steps on the brake pedal, and emergency braking is realized.
The present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent changes and substitutions without departing from the principle of the present invention after learning the content of the present invention, and these equivalent changes and substitutions should be considered as belonging to the protection scope of the present invention.
Claims (4)
1. The utility model provides an intelligent recognition and control system of mistake as brake with throttle which characterized in that: the automatic brake system comprises a brake pedal, a vacuum booster, a brake hydraulic cylinder, a two-position four-way electromagnetic directional valve, a hydraulic pump, a filter, an oil tank and an overflow valve, wherein a plunger push rod of the vacuum booster is connected with the brake pedal through a mechanical hinge, and the brake hydraulic cylinder is arranged on the back side of the brake pedal; the automatic brake system also comprises a flexible cable, the back side of the brake pedal is connected with a piston rod in the brake hydraulic cylinder through the flexible cable, a left oil cavity and a right oil cavity of the brake hydraulic cylinder are respectively connected with a hydraulic pump, an overflow valve and an oil tank through a two-position four-way electromagnetic directional valve, and the hydraulic pump is connected with the oil tank through a filter; and a brake signal output end YA of the ECU controller is connected with an electromagnet YA1 of the two-position four-way electromagnetic directional valve.
2. The control method of the intelligent recognition and control system for using the accelerator as the brake by mistake is characterized by comprising the following steps of:
1) setting threshold values of angular acceleration of an accelerator pedal under different working states of a vehicle, wherein the different working states of the vehicle comprise a forward gear engaging state, a reverse gear engaging state, a neutral gear engaging state and an overtaking state;
2) the ECU controller receives an output signal of the vehicle and judges the working state of the vehicle; the output signals of the vehicle comprise a vehicle forward gear engaging signal, a vehicle reverse gear engaging signal, a vehicle neutral gear engaging signal, a vehicle left steering lamp turning-on signal and a vehicle steering wheel angle sensor signal;
3) the ECU controller receives angular displacement or rotating speed signals of the accelerator pedal and calculates to obtain an acceleration value, the working state of the vehicle is determined, and then the ECU controller compares the calculated angular acceleration value of the accelerator pedal with an angular acceleration threshold value of the accelerator pedal in the corresponding working state to judge whether the accelerator is stepped on by mistake;
4) if the ECU controller judges that the accelerator is stepped on by mistake, the ECU controller outputs an engine oil-cut control signal, simultaneously starts an electronic hand brake signal and a brake signal YA and lights an alarm signal lamp, after an electromagnet YA1 of the two-position four-way electromagnetic directional valve is electrified, the two-position four-way electromagnetic directional valve works at the left position, a brake hydraulic cylinder is close to an oil cavity at the side of the brake pedal to take oil, a piston rod is pushed to move away from the side of the brake pedal, a flexible cable pulls the brake pedal to rotate clockwise, and the vehicle is braked emergently;
5) if the ECU controller judges that the accelerator is not stepped on by mistake, the ECU controller does not output a signal, the two-position four-way electromagnetic directional valve works at the right position, the oil cavity of the brake hydraulic cylinder far away from the brake pedal side keeps oil inlet, the piston rod is pushed to be close to the brake pedal side and keeps the state continuously, at the moment, the flexible inhaul cable has no tension, and the brake pedal has no brake phenomenon.
3. The control method of the intelligent recognition and control system for mistakenly using the accelerator as the brake as claimed in claim 2, is characterized in that:
when the vehicle is in a forward gear engaging state, the threshold value of the angular acceleration of the accelerator pedal is a normal value obtained by debugging;
when the vehicle is in a reverse gear state, the threshold value of the angular acceleration of the accelerator pedal is 75-85% of the normal value;
when the vehicle is in a neutral gear state, the angular acceleration of the accelerator pedal is not provided with a threshold value;
when the vehicle is in the overtaking state, the threshold value of the angular acceleration of the accelerator pedal is 115-125% of the normal value.
4. The control method of the intelligent recognition and control system for mistakenly using the accelerator as the brake as claimed in claim 2, is characterized in that: if the vehicle adopts an electronic accelerator, the angular acceleration of an accelerator pedal is obtained by secondary derivation of an angular displacement signal output by an electronic accelerator sensor; if the vehicle adopts a traditional non-electronic accelerator, the angular acceleration of the accelerator pedal is obtained by once derivation of the output value of a rotating speed sensor, and the rotating speed sensor is arranged on a rotating shaft of the non-electronic accelerator pedal.
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| CN202010264491.6A CN111319463B (en) | 2020-04-07 | 2020-04-07 | Intelligent recognition and control system and method for mistakenly taking accelerator as brake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113525077A (en) * | 2021-09-02 | 2021-10-22 | 深圳微子科技合伙企业(有限合伙) | Automobile accelerator output force control method and system |
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| 王小杰;项红荧;程诚;: "防误将油门当刹车结构的研究", 汽车实用技术, no. 08, 15 August 2012 (2012-08-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525077A (en) * | 2021-09-02 | 2021-10-22 | 深圳微子科技合伙企业(有限合伙) | Automobile accelerator output force control method and system |
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| CN111319463B (en) | 2024-05-31 |
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