CN105644363B - A kind of intelligent control system and control method for preventing accidental stepping of accelerator pedal - Google Patents

Abstract

The invention discloses an intelligent control system and control method for preventing accidental stepping of an accelerator pedal, comprising: a radar ranging device, a steering wheel angular velocity sensor, an accelerator pedal acceleration sensor, a central processing unit, an electronically controlled fuel supply module, a relay, a linkage, and a voice prompt Module, brake pedal. The present invention adopts a modular integrated circuit and modularized means, so that the structure becomes simple. And in the process of driving, in case of emergency, when the driver accidentally presses the accelerator pedal when the brake pedal is pressed due to nervousness, the system can automatically recognize that the driver is pressing the accelerator pedal by mistake, and immediately take the brakes to avoid this traffic. The occurrence of an accident.

Description

A kind of intelligent control system and control method for preventing accidental stepping of accelerator pedal

technical field

The invention belongs to the technical field of automobile safety, and in particular relates to an intelligent control system and a control method for preventing accidental stepping of an accelerator pedal.

Background technique

With the rapid development of my country's economy, the number of automobiles is increasing sharply every year, and the incidence of traffic accidents is also increasing. According to the statistics of relevant transportation departments in my country, the traffic accidents caused by mistakenly using the accelerator pedal as the brake pedal during the emergency braking process account for about 10% of the total accidents. Among them, accidents mainly occur in people who have been driving for a long time, newbies who have just obtained their driver's licenses, and people with poor psychological quality in emergency situations. In addition, in the process of driving, the accelerator pedal and brake pedal need to be controlled with the right foot. Therefore, it is usually unavoidable to accidentally step on the accelerator pedal during braking.

Therefore, an intelligent control system and control method for preventing accidental stepping of the accelerator pedal are developed, so that in the emergency braking process, when the driver mistakenly depresses the accelerator pedal and the brake pedal, the braking system can still automatically brake. This effectively avoids traffic accidents, which is of great significance.

SUMMARY OF THE INVENTION

The invention proposes an intelligent control system and control method for preventing accidental stepping on the accelerator pedal, aiming at the defects existing in the current braking system. In the process of driving, when encountering an emergency and requiring emergency braking, because the driver will be too nervous at this time and mistakenly use the accelerator pedal as a brake pedal, the system can automatically determine that the driver has stepped on the accelerator pedal by mistake. Thereby, the brake system is automatically controlled to work to avoid traffic accidents caused by mistakenly stepping on the accelerator pedal.

Technical solution of the present invention

An intelligent control system for preventing accidental stepping of an accelerator pedal. A radar ranging device, a steering wheel angular velocity sensor and an accelerator pedal acceleration sensor are connected in communication with a central processing unit. .

The relay is connected with the wire of the central processing unit, and is connected in series with the circuit of the electronically controlled fuel supply system.

The radar ranging device is installed under the front of the car.

The voice prompting module applies the existing speakers on the vehicle; it is mainly used to timely inform the driver in the form of voice when the driver steps on the accelerator pedal by mistake.

A control method of an intelligent control system for preventing accidental stepping of an accelerator pedal, comprising the following steps:

(1) When the central processor receives that the acceleration value detected by the accelerator pedal acceleration sensor is greater than the preset value a, but the distance measured by the received radar ranging device does not reach the first preset value H1, and the received steering wheel angular velocity The angular velocity detected by the sensor does not reach the preset value w, at this time, the system considers that the accelerator pedal has not been stepped on by mistake;

(2) If the distance measured by the radar ranging device is less than the first preset value H1 and greater than the second preset value H2 at this time, and the received angular velocity detected by the steering wheel angular velocity sensor does not reach the preset value w , at this time, the central processing unit controls the linkage to work, eliminates the braking gap of the brake pedal, and makes the braking system in an early warning state, until the central processing unit receives that the distance measured by the radar ranging device is less than the second preset value H2, The central processing unit makes the linkage work again, makes the brake pedal start to brake, and turns on the relay circuit to stop the fuel supply of the electronically controlled fuel supply system, and at the same time informs the driver through the voice prompt module to step on the accelerator pedal by mistake;

(3) The central processor receives that the acceleration value detected by the accelerator pedal acceleration sensor is greater than the preset value a, and the angular velocity value detected by the steering wheel angular velocity sensor is greater than the preset value w. At this time, the system considers that the driver has stepped on the accelerator pedal by mistake, and the central processor The linkage is controlled to start braking, and the relay circuit is connected to stop the fuel supply of the electronically controlled fuel supply system. At the same time, the driver is informed by the voice prompt module to step on the accelerator pedal by mistake.

The beneficial effects of the present invention are as follows: an intelligent control system and control method for preventing accidental stepping of the accelerator pedal adopts integrated circuits, and through modular means, the device has a simple structure and low cost. In the process of driving, when emergency braking is required in an emergency situation, the driver mistakenly depresses the accelerator pedal as the brake pedal because of nervousness. At this time, the control module automatically judges that the driver has stepped on the accelerator pedal by mistake according to the collected signals. , and will automatically control the braking system to avoid the occurrence of this traffic accident.

Description of drawings

Fig. 1 is the working principle diagram of the present invention.

Detailed ways

An intelligent control system for preventing accidental stepping of an accelerator pedal, comprising a radar ranging device 1, a steering wheel angular velocity sensor 2, an accelerator pedal acceleration sensor 3 and a central processing unit 4 in communication connection; the radar ranging device (1 is installed under the front of the car, It is used to detect the distance from the vehicle to the obstacle in front; the relay 6 is connected in series with the circuit of the electronically controlled fuel supply system 5; it is mainly used to control the work of the electronically controlled fuel supply system 5; The central processing unit controls the work of the relay; the linkage 7 is an electronically controlled linkage, connected in series between the accelerator pedal and the brake pedal 9; it is mainly used to control the work of the brake pedal; the linkage 7 is connected to the central processing unit 4 for communication; Prompt module 8, using the existing speaker on the car; it is mainly used to inform the driver in time in the form of voice when the driver accidentally steps on the accelerator pedal;

Specific working process:

(1) When the central processing unit 4 receives that the acceleration value detected by the accelerator pedal acceleration sensor 3 is greater than the preset value a, and the received distance measured by the radar ranging device 1 does not reach the first preset value H1, and receives The angular velocity detected by the steering wheel angular velocity sensor 2 does not reach the preset value w, at this time, the system considers that the accelerator pedal has not been stepped on by mistake;

(2) If the distance measured by the radar ranging device 1 is less than the first preset value H1 but greater than the second preset value H2 at this time, and the received angular velocity detected by the steering wheel angular velocity sensor 2 does not reach the preset value Value w, at this time, the central processing unit 4 controls the linkage to work, eliminates the braking gap of the brake pedal 9, and makes the braking system in an early warning state, until the central processing unit 4 receives that the distance measured by the radar ranging device 1 is less than the second When the preset value is H2, the central processing unit 4 makes the linkage 7 work again, so that the brake pedal 9 starts to brake, and turns on the circuit of the relay 6 to stop the fuel supply of the electronically controlled fuel supply system 5. At the same time, the voice prompt module 8 Inform the driver that the accelerator pedal is pressed by mistake;

(3) The central processing unit 4 receives that the acceleration value detected by the accelerator pedal acceleration sensor 3 is greater than the preset value a, and the angular velocity value detected by the steering wheel angular velocity sensor 2 is greater than the preset value w. At this time, the system considers that the driver has stepped on the accelerator pedal by mistake, The central processing unit 4 controls the work of the linkage to make the brake pedal start to brake, and turns on the circuit of the relay 6 to stop the fuel supply of the electronically controlled fuel supply system 5. At the same time, the voice prompt module 8 informs the driver to step on the accelerator pedal by mistake.

Claims (3)

1. An intelligent control system for preventing mistakenly stepping on the accelerator pedal, characterized in that: a radar ranging device (1), a steering wheel angular velocity sensor (2) and an accelerator pedal acceleration sensor (3) are connected in communication with a central processing unit (4), and are linked together. The device (7) is connected in series between the accelerator pedal and the brake pedal (9), and is connected in communication with the central processing unit (4); its control method includes the following steps: (1) When the central processing unit (4) receives that the acceleration value detected by the accelerator pedal acceleration sensor (3) is greater than the preset value a, and the received distance measured by the radar ranging device (1) does not reach the first preset value value H1, and the received angular velocity detected by the steering wheel angular velocity sensor (2) does not reach the preset value w, at this time, the system considers that the accelerator pedal has not been stepped on by mistake; (2) If the received distance measured by the radar ranging device (1) is smaller than the first preset value H1 but greater than the second preset value H2, and the received angular velocity detected by the steering wheel angular velocity sensor (2) is also The preset value w is not reached. At this time, the central processing unit (4) controls the linkage to work, eliminates the braking gap of the brake pedal (9), and makes the braking system in an early warning state until the central processing unit (4) receives the radar detection. When the measured distance from the device (1) is less than the second preset value H2, the central processing unit (4) makes the linkage (7) work again, makes the brake pedal (9) start to brake, and turns on the relay ( 6) The circuit stops the fuel supply of the electronically controlled fuel supply system (5), and at the same time informs the driver to step on the accelerator pedal by mistake through the voice prompt module (8); (3) The central processing unit (4) receives that the acceleration value detected by the accelerator pedal acceleration sensor (3) is greater than the preset value a, and the angular velocity value detected by the steering wheel angular velocity sensor (2) is greater than the preset value w. At this time, the system considers that driving If the operator accidentally steps on the accelerator pedal, the central processing unit (4) controls the linkage to work, so that the brake pedal starts to brake, and turns on the circuit of the relay (6) to stop the fuel supply of the electronically controlled fuel supply system (5). (8) Inform the driver to step on the accelerator pedal by mistake; the relay (6) is connected with the wire of the central processing unit (4), and is connected in series to the circuit of the electronically controlled fuel supply system (5). 2 . The intelligent control system for preventing accidental stepping on the accelerator pedal according to claim 1 , wherein the radar ranging device ( 1 ) is installed under the front of the car. 3 . 3 . The intelligent control system for preventing accidental stepping on the accelerator pedal according to claim 1 or 2 , wherein the voice prompt module ( 8 ) applies the existing speakers on the vehicle. 4 .