CN110696612A - Control method and system for avoiding mistaken stepping on automobile accelerator - Google Patents
Control method and system for avoiding mistaken stepping on automobile accelerator Download PDFInfo
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- CN110696612A CN110696612A CN201910801328.6A CN201910801328A CN110696612A CN 110696612 A CN110696612 A CN 110696612A CN 201910801328 A CN201910801328 A CN 201910801328A CN 110696612 A CN110696612 A CN 110696612A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 241000287828 Gallus gallus Species 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
Abstract
The invention discloses a control method and a system for avoiding mistaken stepping on an accelerator of an automobile, wherein the system is based on the automobile with an electronic accelerator control system, four radars are respectively arranged on a front bumper and a rear bumper of the automobile and used for detecting whether obstacles exist around the automobile, the radars monitor distance signals of the obstacles from an automobile body, the signals are transmitted to an ECU (electronic control Unit), and the displacement signals, driving speed and gear signals acquired by an automobile electronic control unit when the accelerator pedal is stepped on are combined, and the ECU judges whether to trigger the mistaken stepping on the accelerator system or not, so that the mistaken stepping on the accelerator can be avoided under the condition of low-speed driving.
Description
Technical Field
The invention relates to the technical field of automobile safety, in particular to the field of judgment of mistaken stepping on of an automobile accelerator.
Background
In modern society, automobiles are already an indispensable component of human life, and therefore, it is required that we pay more attention to the safety performance of automobiles. In real life, traffic accidents happen due to the fact that a driver operates improperly and an accelerator pedal is used as a brake pedal. For example, when the automobile runs, a pedestrian suddenly jumps out of the front, or when the automobile runs in the reverse direction, an electric bicycle suddenly runs from the back, and the like. Due to the sudden event, the driver may step on the wrong accelerator pedal due to confusion.
At present, in similar technical means, most of the methods judge whether the situation of accelerator mistaken stepping exists by detecting the distance between an automobile and an obstacle, but the current situation can occur in the actual driving process, for example, the automobile is in a following state, the automobile is very close to a front automobile, the system can judge that the situation belongs to the situation of accelerator mistaken stepping, and for example, when the automobile is on an uphill road section, the rear automobile follows, the vehicle backs up, and the system can judge that the situation belongs to the situation of accelerator mistaken stepping. Therefore, the currently commonly used accelerator mis-stepping judgment system is not only complex and high in cost, but also is easy to cause misjudgment, so that the system has a very chicken rib.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a vehicle control method and a vehicle control system for avoiding the situation of mistakenly stepping on an accelerator under the low-speed running condition.
In order to achieve the purpose, the invention adopts the technical scheme that: a control method for avoiding the false stepping of the accelerator of an automobile judges the situation of the false stepping of the accelerator when the following conditions are simultaneously met:
condition 1, when the automobile is in a low-speed state;
the method comprises the following steps that 2, when the vehicle is in a forward gear, the distance of an obstacle in front of the vehicle is smaller than a set distance, or when the vehicle is in a reverse gear, the distance of the obstacle behind the vehicle is smaller than the set distance;
acquiring an accelerator pressing displacement signal under the condition 3;
and when the accelerator is mistakenly stepped, the accelerator stepping instruction is not executed.
The low-grade state is that the vehicle speed is less than 40 km/h.
And 2, under the condition that the distance between the front obstacle of the automobile is smaller than the set distance and the distance between the front obstacle and the automobile is reduced when the automobile is in the forward gear currently, or under the condition that the distance between the rear obstacle of the automobile is smaller than the set distance and the distance between the rear obstacle and the automobile is reduced when the automobile is in the reverse gear currently.
When the vehicle is in a forward gear, if the distance between the rear obstacles of the vehicle is less than a set distance, the condition that the accelerator is stepped on by mistake is not judged.
The forward gears of the manual-gear automobile are 1, 2, 3, 4, 5 and 6 gears, the forward gear of the automatic-gear automobile is L, S, D gears, and the reverse gears of the manual-gear automobile and the automatic-gear automobile are R gears.
The utility model provides an avoid accelerator of car to step on control system by mistake, the system is equipped with the radar of installing in vehicle the place ahead and rear, every radar output signal to ECU, ECU acquires car and keeps off position signal, speed signal and accelerator pedal displacement signal, ECU output drive control signal to servo motor, servo motor drive throttle valve executor work, the system execution avoid accelerator of car to step on control method by mistake.
A pedal displacement sensor is mounted on an accelerator pedal of the automobile and connected with an ECU (electronic control unit) through a data line.
And the ECU is connected with a CAN bus to acquire a gear signal and a speed signal of the automobile.
The invention can effectively improve the risk of traffic safety accidents caused by mistakenly stepping on the accelerator under the working conditions of low speed of the automobile, starting, normal forward, backing and ramp pulley.
Drawings
The following is a brief description of the contents of each figure in the description of the present invention:
FIG. 1 is a flow chart of a control method for avoiding false stepping of an accelerator of a vehicle;
FIG. 2 is a schematic diagram illustrating the judgment of the misstep of the accelerator during the forward driving process of the automobile;
FIG. 3 is a schematic view illustrating an accelerator miss-stepping judgment in the process of backing a car;
FIG. 4 is a schematic diagram illustrating the judgment of accelerator not being mistakenly stepped on when the vehicle slips backwards on a slope;
FIG. 5 is a schematic view of a front radar installation;
FIG. 6 is a schematic view of a parking space radar installation;
FIG. 7 is a schematic diagram of a detection state of a front radar;
FIG. 8 is a diagram illustrating a detection status of the rear radar.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.
At present, in the automobile industry, the automobile accelerator is basically automatically controlled through an electronic accelerator, so that the invention is based on an automobile with an electronic accelerator control system, and the electronic accelerator control system of the automobile mainly comprises an accelerator pedal, a pedal displacement sensor, an ECU (electronic control unit), a data bus, a servo motor and a throttle actuator.
Because the accelerator is mistakenly stepped on a road section with complicated road conditions, the driving speed of the vehicle is usually not higher than 40km/h, so that the invention only aims at the condition that the accelerator is mistakenly stepped on under the low-speed working condition, and the invention is not suitable for accelerating overtaking, bidirectional high-speed vehicle passing and bidirectional vehicle passing on a curve.
The control method for avoiding the mistaken stepping of the automobile accelerator judges whether the accelerator pedal is mistakenly stepped or not through ECU logical calculation by acquiring a pedal displacement signal, an automobile running speed, a vehicle-obstacle distance signal and an automobile gear signal. Under the working condition of low-speed running, the system can effectively judge and distinguish which running conditions should trigger the accelerator mistaken-stepping system and which do not trigger the accelerator mistaken-stepping system, so as to prevent the driver from mistakenly stepping on the accelerator due to improper driving.
As shown in fig. 5 and 6, four radars are respectively installed on the front bumper and the rear bumper of the automobile to detect whether obstacles exist around the automobile, the radars monitor distance signals of the obstacles from the automobile body, the signals are transmitted to the ECU, and the ECU judges whether to trigger the accelerator mis-stepping system or not by combining displacement signals, driving speed and gear signals acquired by the automobile electronic control unit when the accelerator pedal is stepped on. As shown in fig. 7 and 8, the four front radars and the four rear radars respectively detect the distances from pedestrians or other obstacles at the rear of the front vehicle to the vehicle body, and transmit the distance information of the detected obstacles to the vehicle electronic control unit ECU.
As shown in fig. 1, when the radar does not collect an obstacle signal during the driving process of the automobile (including forward and reverse), the ECU performs simple logic processing to control the operation of the servo motor according to the displacement signal generated by the pedal displacement sensor when the driver steps on the accelerator pedal, so as to achieve the effect of controlling the opening of the throttle valve. When the radar collects a distance signal of an obstacle, if a driver treads an accelerator pedal at the same time, a displacement signal is generated, the running speed of the automobile is in a low speed state, the speed of the automobile is less than 40km/h, and meanwhile, an electronic control unit needs to detect a gear signal of the automobile, at the moment, an ECU carries out simple logic calculation according to the distance signal, the speed signal when the accelerator is stepped, the gear signal and the displacement signal which are received at the same time to judge whether the accelerator is stepped by mistake, so that a servo motor is controlled to work, and the effect of controlling a throttle valve is achieved.
The logic for determining the accelerator mis-pedaling assist system of the present invention will be described in detail with reference to fig. 2, 3 and 4.
FIG. 2 is a schematic diagram of the judgment of the misstep of the accelerator during the forward running process of the automobile. As shown in FIG. 2, during the normal forward running or starting process of the automobile at low speed, the speed of the automobile is less than 40km/h, and an obstacle suddenly appears in front of the automobile, if the driver mistakenly steps on the accelerator. Under the working condition, the logic for judging the false stepping of the accelerator is as follows: the electric control unit captures a vehicle speed signal when a gear of a vehicle is in a forward gear signal and an accelerator is stepped on, the radar detects that a distance reduction signal of a vehicle head and an obstacle is within a distance limit value and the distance is reduced, meanwhile, a displacement signal of accelerator pressing generated by mistakenly stepping on the accelerator is captured, the electric control unit ECU judges that the accelerator is mistakenly stepped on according to the signals through logic operation, and judges that the stepping is invalid, so that a servo motor does not work (note that forward gear signals need to distinguish manual gears and automatic gears, the forward gears of the manual gears are 1, 2, 3 and 4, the forward gears of the automatic gears are L, S, D, and the distance limit value required by the distance reduction signal is set according to requirements, so that the invention does not make specific requirements).
FIG. 3 is a schematic diagram of the judgment of the mistaken stepping of the accelerator in the process of backing the automobile. As shown in FIG. 3, when the vehicle is backing, the speed of the vehicle is less than 40km/h, and an obstacle suddenly appears behind the vehicle, if the driver mistakenly steps on the accelerator. Under the working condition, the logic for judging the false stepping of the accelerator is as follows: the electric control unit captures a vehicle speed signal when a vehicle gear is in a reverse gear signal and an accelerator is stepped on, the speed signal is less than 40km/h, the radar detects that a distance reduction signal between a vehicle tail and an obstacle is within a distance limit value and the distance is reduced, meanwhile, a displacement signal of accelerator pressing caused by mistakenly stepping on the accelerator is captured, the electric control unit ECU judges that the accelerator is mistakenly stepped on according to the signals through logical operation, and judges that the stepping is invalid, a servo motor does not work (note: a reverse gear signal, a manual gear and an automatic gear vehicle reverse gear are R gears, and the distance limit value required by the distance reduction signal is set according to requirements, so that the invention does not make specific requirements).
If the automobile slips backwards in the process of parking and starting the automobile on the slope, according to the judgment logic of mistaken stepping of the accelerator in the process of backing the automobile shown in the figure 2: the vehicle speed signal when the gear of the vehicle is in a forward gear signal and the accelerator is stepped on is less than 40km/h, the radar detects that the distance between the tail of the vehicle and the obstacle is reduced within a distance limit value and the distance is reduced, meanwhile, the displacement signal of the pressing of the accelerator is captured, and the electronic control unit ECU judges that the accelerator is stepped on by mistake through logic operation according to the signals, so that the accelerator is not stepped on, the vehicle slips backwards all the way, and the safety risk occurs, so the logic of the following figure 4 can avoid the situation.
FIG. 4 is a schematic diagram of the judgment of the accelerator not being mistakenly stepped on when the automobile slips backwards on a slope. As shown in FIG. 4, on the uphill road section of the automobile, the speed of the automobile is less than 40km/h, the automobile follows behind the automobile, and the slip-back situation occurs. Under the working condition, the system is required to evaluate the accelerator pedal to be normally stepped, and the logic for judging whether the accelerator is stepped by mistake is as follows: the electric control unit captures a vehicle speed signal when a gear of a vehicle is in a forward gear signal and an accelerator is stepped on, the radar detects that a distance reduction signal between a tail of the vehicle and an obstacle is within a distance limit value and the distance is reduced, and simultaneously captures a displacement signal of pressing the accelerator generated by stepping on the accelerator, the electric control unit ECU judges that the accelerator is not stepped on by mistake through logic operation according to the signals, and judges that the stepping is effective, and then the servo motor normally works (note that forward gear signals need to distinguish a manual gear from an automatic gear, the forward gears of the manual gear are 1, 2, 3 and 4, the forward gear of the automatic gear is L, S, D, and the distance limit value required by the distance reduction signal is set according to requirements, and the invention does not make specific requirements).
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (8)
1. A control method for avoiding the false stepping of the automobile accelerator is characterized in that the situation of false stepping of the accelerator is judged when the following conditions are simultaneously met:
condition 1, when the automobile is in a low-speed state;
the method comprises the following steps that 2, when the vehicle is in a forward gear, the distance of an obstacle in front of the vehicle is smaller than a set distance, or when the vehicle is in a reverse gear, the distance of the obstacle behind the vehicle is smaller than the set distance;
acquiring an accelerator pressing displacement signal under the condition 3;
and when the accelerator is mistakenly stepped, the accelerator stepping instruction is not executed.
2. The control method for avoiding mistaken stepping on the accelerator of the automobile according to claim 1, characterized in that: the low-grade state is that the vehicle speed is less than 40 km/h.
3. The control method for avoiding mis-stepping on the accelerator of the automobile according to claim 1 or 2, wherein: and 2, under the condition that the distance between the front obstacle of the automobile is smaller than the set distance and the distance between the front obstacle and the automobile is reduced when the automobile is in the forward gear currently, or under the condition that the distance between the rear obstacle of the automobile is smaller than the set distance and the distance between the rear obstacle and the automobile is reduced when the automobile is in the reverse gear currently.
4. The control method for avoiding mistaken stepping on the accelerator of the automobile according to claim 3, characterized in that: when the vehicle is in a forward gear, if the distance between the rear obstacles of the vehicle is less than a set distance, the condition that the accelerator is stepped on by mistake is not judged.
5. The control method for avoiding mis-stepping on the accelerator of the automobile as claimed in claim 1 or 4, wherein: the forward gears of the manual-gear automobile are 1, 2, 3, 4, 5 and 6 gears, the forward gear of the automatic-gear automobile is L, S, D gears, and the reverse gears of the manual-gear automobile and the automatic-gear automobile are R gears.
6. A control system for avoiding mistaken stepping on automobile accelerator is provided with radars which are installed in the front and the rear of a vehicle, each radar outputs a signal to an ECU, the ECU acquires an automobile gear signal, a vehicle speed signal and an accelerator pedal displacement signal, the ECU outputs a driving control signal to a servo motor, and the servo motor drives a throttle valve actuator to work, and is characterized in that the system executes the control method for avoiding mistaken stepping on the automobile accelerator according to any one of claims 1 to 5.
7. The control system for avoiding accelerator mis-stepping of an automobile according to claim 6, wherein: a pedal displacement sensor is mounted on an accelerator pedal of the automobile and connected with an ECU (electronic control unit) through a data line.
8. The control system for avoiding accelerator mis-depression of an automobile according to claim 6 or 7, wherein: and the ECU is connected with a CAN bus to acquire a gear signal and a speed signal of the automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801328.6A CN110696612A (en) | 2019-08-28 | 2019-08-28 | Control method and system for avoiding mistaken stepping on automobile accelerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910801328.6A CN110696612A (en) | 2019-08-28 | 2019-08-28 | Control method and system for avoiding mistaken stepping on automobile accelerator |
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| CN110696612A true CN110696612A (en) | 2020-01-17 |
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| CN201910801328.6A Pending CN110696612A (en) | 2019-08-28 | 2019-08-28 | Control method and system for avoiding mistaken stepping on automobile accelerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356665A (en) * | 2020-10-19 | 2021-02-12 | 山东派蒙机电技术有限公司 | Method and system for preventing accelerator from being stepped on by mistake |
| CN112622889A (en) * | 2020-12-28 | 2021-04-09 | 奇瑞汽车股份有限公司 | Automobile anti-collision control method, device, equipment and storage medium |
| CN114962625A (en) * | 2021-07-23 | 2022-08-30 | 长城汽车股份有限公司 | Gear shifting control method and device, vehicle and computer readable storage medium |
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| CN109466324A (en) * | 2018-11-22 | 2019-03-15 | 王毓 | A kind of control system of mis-accelerator pressing |
| CN109532483A (en) * | 2019-01-09 | 2019-03-29 | 北京理工华创电动车技术有限公司 | A kind of control device for automobile accelerator and method |
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2019
- 2019-08-28 CN CN201910801328.6A patent/CN110696612A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09287488A (en) * | 1996-04-17 | 1997-11-04 | Fujitsu Ten Ltd | Throttle valve control device |
| CN103318026A (en) * | 2013-07-10 | 2013-09-25 | 东风汽车公司 | Automobile accelerator limiting protecting system and control method |
| CN104442395A (en) * | 2014-10-30 | 2015-03-25 | 奇瑞汽车股份有限公司 | Automobile safety starting and stopping system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356665A (en) * | 2020-10-19 | 2021-02-12 | 山东派蒙机电技术有限公司 | Method and system for preventing accelerator from being stepped on by mistake |
| CN112356665B (en) * | 2020-10-19 | 2022-02-18 | 山东派蒙机电技术有限公司 | Method and system for preventing accelerator from being stepped on by mistake |
| CN112622889A (en) * | 2020-12-28 | 2021-04-09 | 奇瑞汽车股份有限公司 | Automobile anti-collision control method, device, equipment and storage medium |
| CN114962625A (en) * | 2021-07-23 | 2022-08-30 | 长城汽车股份有限公司 | Gear shifting control method and device, vehicle and computer readable storage medium |
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Application publication date: 20200117 |