Safety system and method for preventing driver from accidentally stepping on accelerator pedal

Abstract

The present invention relates to the field of traffic safety, and more specifically to a safety system and method for preventing drivers from accidentally pressing the accelerator pedal. The present invention determines if a driver accidentally presses the accelerator pedal based on the vehicle's speed, acceleration, accelerator pedal opening, steering wheel angle, and vehicle angular acceleration. This solves the existing problems of a high rate of misjudgment due to limited judgment criteria and difficulty in obtaining information about the driver's physiological state.

Description

Technical Field

[0001] The present invention relates to the field of traffic safety, and in particular to a safety system and method for preventing a driver from accidentally stepping on an accelerator pedal. Background Art

[0002] When a vehicle is driving normally on the road and faces an unexpected road safety incident, the driver's first reaction is to brake. With economic development, driving skills have gradually become essential, and the number of novice drivers is increasing. For novice drivers, when faced with an emergency, due to factors such as high speed, complex road conditions, and their own psychological state, they can easily mistake the accelerator pedal for the brake pedal in panic. Furthermore, pressing the accelerator pedal hard causes the vehicle to accelerate suddenly, further causing the driver to panic and continue to press the accelerator harder, failing to brake in time. This often leads to the driver violently turning the steering wheel to avoid a collision with an obstacle ahead, resulting in serious traffic accidents.

[0003] Existing systems and methods for preventing drivers from accidentally pressing the accelerator pedal primarily rely on determining whether the driver has accidentally pressed the accelerator pedal. These systems use information about the vehicle's accelerator pedal position and force, or combine the accelerator pedal with facial information to determine the driver's driving intent. However, these existing methods rely on a limited number of factors, and acquiring facial information can be difficult. This leads to significant errors in determining the driver's driving intent, resulting in a high rate of misjudgment. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a safety system and method for preventing the driver from accidentally stepping on the accelerator pedal.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions to achieve them.

[0006] A safety system for preventing a driver from accidentally stepping on an accelerator pedal comprises a signal acquisition module, a processor and a control module;

[0007] The signal acquisition module is used to collect the vehicle's speed, acceleration, accelerator pedal opening, steering wheel angle and vehicle angular acceleration through the on-board CAN bus and transmit them to the processor; the processor is used to judge whether the driver has accidentally stepped on the accelerator pedal and send a control signal to the control module; the control module is used to control the vehicle's power system to cause the vehicle to lose power and control the vehicle's braking system to brake the vehicle according to the control signal.

[0008] A method for preventing a driver from accidentally stepping on an accelerator pedal is provided, based on the above-mentioned safety system for preventing a driver from accidentally stepping on an accelerator pedal, comprising the following steps:

[0009] Step 1: The signal acquisition module continuously collects the vehicle's speed, acceleration, accelerator pedal opening, and steering wheel angle;

[0010] Step 2: The processor calculates the current risk score based on the collected data;

[0011] Step 3: When the risk score is greater than or equal to the set threshold, the processor sends a control signal to the control module;

[0012] In step 4, the control module controls the power system of the vehicle to make the vehicle lose power according to the control signal, and controls the braking system of the vehicle to brake the vehicle.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: judging the driver's misstepping on the accelerator pedal through the vehicle's speed, acceleration, accelerator pedal opening, steering wheel angle and vehicle angular acceleration, solving the problems in the existing technology of high misstepping and misjudgment rate due to few judgment conditions and difficulty in obtaining driver's physiological state information. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 Schematic diagram of the structure of the system of the present invention;

[0016] Figure 2 Schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0017] The embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be construed as limiting the scope of the present invention.

[0018] refer to Figure 1 , a safety system for preventing a driver from accidentally stepping on the accelerator pedal, comprising a signal acquisition module, a processor and a control module;

[0019] The signal acquisition module is used to collect the vehicle's speed, acceleration, accelerator pedal opening, steering wheel angle and vehicle angular acceleration through the vehicle's CAN bus and transmit them to the processor;

[0020] The processor is used to determine whether the driver accidentally stepped on the accelerator pedal and send a control signal to the control module;

[0021] The control module is used to control the power system of the vehicle to make the vehicle lose power according to the control signal, and to control the braking system of the vehicle to brake the vehicle.

[0022] refer to Figure 2A method for preventing a driver from accidentally stepping on the accelerator pedal is provided, based on the above-mentioned safety system for preventing a driver from accidentally stepping on the accelerator pedal, comprising the following steps:

[0023] Step 1: The signal acquisition module continuously collects the vehicle's speed, acceleration, accelerator pedal opening, and steering wheel angle; the acquisition frequency of the signal acquisition module is 10 Hz;

[0024] Step 2: The processor calculates the current risk score based on the collected data, which includes the following sub-steps:

[0025] Sub-step 2.1, calculate the risk score under the three parameters;

[0026] Calculate the danger score based on vehicle speed: The processor compares the current vehicle speed V1 with the average vehicle speed V0 in the previous 30 seconds. When V1 is less than 1.5V0, the danger score is 0; when 1.5V0≤V1≤2V0, the danger score is 0.1; when 2V0≤V1≤3V0, the danger score is 0.2; when 3V0≤V1, the danger score is 0.3;

[0027] Calculate the risk score based on the accelerator pedal opening: The processor calculates the difference between the current accelerator pedal opening and the accelerator pedal opening at the previous moment. When the difference is less than 40%, the risk score does not increase; when the difference is greater than or equal to 40% and less than 50%, the risk score is 0.2; when the difference is greater than or equal to 50% and less than 60%, the risk score is 0.3; when the difference is greater than or equal to 60% and less than 70%, the risk score is 0.4; when the difference is greater than or equal to 70% and less than 80%, the risk score is 0.5; when the difference is greater than or equal to 80%, the risk score is 0.8;

[0028] Calculate the danger score based on the vehicle's driving status: When the current vehicle acceleration exceeds 2m / s 2 Or the current accelerator pedal opening is greater than 70%, it means that the vehicle is in an abnormal acceleration state, and the current steering wheel angle is greater than 90° or the current vehicle angular acceleration value exceeds The risk score is 0.5;

[0029] Sub-step 2.2, calculate the sum of the risk scores in the three cases to obtain the risk score at the current moment.

[0030] Step 3: When the risk score is greater than or equal to 1, it indicates that the driver is accidentally pressing the accelerator pedal, and the processor sends a control signal to the control module;

[0031] In step 4, the control module controls the power system of the vehicle to make the vehicle lose power according to the control signal, and controls the braking system of the vehicle to brake the vehicle.

[0032] Although this specification has provided a detailed description of the present invention using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A method for preventing a driver from accidentally stepping on an accelerator pedal, characterized in that: The following steps are involved: Step 1: The signal acquisition module continuously collects the vehicle's speed, acceleration, accelerator pedal opening, and steering wheel angle; Step 2: The processor calculates the current risk score based on the collected data; Contains the following sub-steps: Sub-step 2.1, calculate the risk score under the three parameters; Calculate the danger score based on vehicle speed: The processor compares the current vehicle speed V1 with the average vehicle speed V0 in the previous 30 seconds. When V1 is less than 1.5V0, the danger score is 0; when 1.5V0≤V1≤2V0, the danger score is 0.1; when 2V0≤V1≤3V0, the danger score is 0.2; when 3V0≤V1, the danger score is 0.3; Calculating a risk score based on the accelerator pedal opening: The processor calculates the difference between the current accelerator pedal opening and the previous accelerator pedal opening. If the difference is less than 40%, the risk score does not increase. When the difference is greater than or equal to 40% and less than 50%, the risk score is 0.2; when the difference is greater than or equal to 50% and less than 60%, the risk score is 0.3; when the difference is greater than or equal to 60% and less than 70%, the risk score is 0.4; when the difference is greater than or equal to 70% and less than 80%, the risk score is 0.5; when the difference is greater than or equal to 80%, the risk score is 0.8; Calculate the danger score based on the vehicle's driving status: the current vehicle acceleration exceeds 2m / s 2 Or the current accelerator pedal opening is greater than 70%, and the current steering wheel angle is greater than 90° or the current vehicle angular acceleration value exceeds rad / s 2 , the risk score is 0.5; Sub-step 2.2, calculate the sum of the risk scores in the three cases to obtain the risk score at the current moment; Step 3: When the risk score is greater than or equal to the set threshold, the processor sends a control signal to the control module; In step 4, the control module controls the power system of the vehicle to make the vehicle lose power according to the control signal, and controls the braking system of the vehicle to brake the vehicle.

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