CN113147393A - Method and device for identifying mistaken stepping of automobile accelerator pedal - Google Patents
Method and device for identifying mistaken stepping of automobile accelerator pedal Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60K28/02—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 driver
- B60K28/06—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 driver responsive to incapacity of driver
- B60K28/063—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 driver responsive to incapacity of driver preventing starting of vehicles
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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- 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
- B60T7/14—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated upon collapse of driver
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Abstract
The application discloses a method and a device for identifying mistaken stepping of an accelerator pedal of an automobile, which relate to the technical field of automobile safety, and the method comprises the following steps: after the whole vehicle is powered on, acquiring biological identification information of a driver, and judging whether the driver has driving authority or not based on the biological identification information; when the driver has the driving right, acquiring at least one physiological parameter of the driver and accelerator pedal data; acquiring a preset pedal data threshold and a deviation rate threshold of a physiological parameter; and if the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is stepped on by mistake, cutting off power output and executing braking deceleration. The method and the device for identifying the mistaken stepping of the accelerator pedal of the automobile can not only identify the mistaken stepping of the accelerator pedal in a targeted manner aiming at different drivers, but also improve the identification accuracy rate of the mistaken stepping of the accelerator pedal, reduce the occurrence of missed judgment and increase the driving safety.
Description
Technical Field
The application relates to the technical field of automobile safety, in particular to a method and a device for identifying mistaken stepping of an accelerator pedal of an automobile.
Background
At present, when a driver drives a vehicle in an emergency, the driver sometimes mistakenly steps on an accelerator pedal as a brake pedal due to lack of concentration, unskilled operation, stress mental stress and the like, and serious traffic accidents are caused.
In the related art, patent CN106114414B provides a method and a device for detecting an accelerator mis-stepping on an electric vehicle, where the method for detecting an accelerator mis-stepping on an electric vehicle includes obtaining a real-time vehicle speed, an accelerator pedal opening degree information, a steering wheel angle information, and a vehicle peripheral obstacle information of the electric vehicle, and then detecting an accelerator mis-stepping on the electric vehicle according to the real-time vehicle speed, the accelerator pedal opening degree information, the steering wheel angle information, and the vehicle peripheral obstacle information of the electric vehicle. Wherein, whether to step on specifically including by mistake according to barrier, footboard aperture change information and steering wheel corner information synthesis around the vehicle: if no obstacle exists, the detection operation of mistakenly stepping on the accelerator is not carried out; if the obstacle exists, judging whether the electric automobile is in a overtaking state or not according to the steering wheel angle information; if the vehicle is in the overtaking state, the detection operation of mistakenly stepping on the accelerator is not carried out; and if the vehicle is not in the overtaking state, carrying out the mistaken stepping detection operation of the accelerator.
However, the detection result of the obstacle around the vehicle has a certain deviation, which easily causes misjudgment or misjudgment, and if the detection capability of the deep pit or the rod-shaped object is weak, the misjudgment of the accelerator is caused. In addition, for the detected obstacle, whether the detected obstacle is in a passing state or not needs to be judged by combining steering wheel angle information, but whether the steering wheel angle signal is generated by a behavior that the steering wheel is required to be kicked after the accelerator is stepped on by mistake or not cannot be effectively judged, so that the mistaken stepping on of the accelerator pedal cannot be effectively identified through the mode, and the reliability of preventing the accelerator from being stepped on by mistake is low.
Disclosure of Invention
The method and the device for identifying the mistaken stepping of the accelerator pedal of the automobile aim to overcome the defects in the prior art, and solve the problems that the mistaken stepping of the accelerator pedal cannot be effectively identified and the mistaken stepping of an accelerator is prevented and the reliability is low in the prior art.
The application provides a method for identifying mistaken stepping of an accelerator pedal of an automobile in a first aspect, which comprises the following steps
After the whole vehicle is powered on, acquiring biological identification information of a driver, and judging whether the driver has driving authority or not based on the biological identification information;
when the driver has the driving right, acquiring at least one physiological parameter of the driver and accelerator pedal data;
acquiring a preset pedal data threshold and a deviation rate threshold of a physiological parameter;
and if the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is mistakenly stepped, cutting off power output and executing braking deceleration.
In some embodiments, the biometric information is face information or fingerprint information;
judging whether the driver has driving authority based on the biological identification information specifically comprises:
matching the face information or the fingerprint information with prestored face information or fingerprint information in a database, wherein the database stores at least one piece of prestored face information or fingerprint information with driving authority;
and determining whether the driver has the driving authority according to the matching result.
In some embodiments, the physiological parameters include blood pressure, heart rate, and pulse.
In some embodiments, before acquiring any one of the physiological parameters of the driver, the method further includes:
setting a base value of the physiological parameter of the driver;
accumulating the acquisition time of the physiological parameter from the first acquisition of the physiological parameter of the driver, and taking the basic value as a reference value of the physiological parameter when the accumulation does not reach the preset time length;
when the accumulation reaches the preset time length, acquiring the average value of the physiological parameter in the preset time length, and taking the average value as the reference value of the physiological parameter acquired next time;
when the accumulated time exceeds the preset time length, removing the first physiological parameter in the last preset time length each time one physiological parameter is obtained, and calculating the average value of the obtained physiological parameter and the rest physiological parameters in the last preset time length to be used as the reference value of the next obtained physiological parameter;
the rate of deviation of any physiological parameter is: the difference value of the physiological parameter and the reference value thereof, and the ratio of the difference value to the reference value.
In some embodiments, the accelerator pedal data is pedal travel or a pedal travel rate;
when the accelerator pedal data is pedal travel, the pedal data threshold is a pedal travel threshold;
and when the accelerator pedal data is the pedal stroke change rate, the pedal data threshold is a pedal stroke change rate threshold.
In some embodiments, when the driver does not have the driving right, the whole vehicle is controlled to be powered off.
The application second aspect provides a recognition system is stepped on to accelerator pedal mistake, and it includes:
the first acquisition module is used for acquiring biological identification information of a driver after the whole vehicle is powered on;
a false step identification control module for judging whether the driver has driving authority based on the biological identification information;
the second acquisition module is used for acquiring at least one physiological parameter of the driver and accelerator pedal data when the driver has driving authority;
the false stepping recognition control module is also used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter; when the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is mistakenly stepped on, and sending a mistaken stepping signal of the accelerator pedal to the brake controller and the vehicle control unit;
the vehicle control unit is used for cutting off power output after receiving an accelerator pedal mistaken stepping signal;
the brake controller is used for executing braking deceleration after receiving the mistaken stepping signal of the accelerator pedal.
In some embodiments, the false stepping recognition control module includes:
an authority identification submodule for judging whether the driver has driving authority based on the biometric information;
the acquisition submodule is used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter;
and the control submodule is used for judging that the accelerator pedal is mistakenly stepped when the accelerator pedal data is larger than the pedal data threshold and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold of the physiological parameter, and sending a mistaken stepping signal of the accelerator pedal to the brake controller and the whole vehicle controller.
In some embodiments, when the right identification submodule determines that the driver does not have the driving right, the control submodule is further configured to control the entire vehicle to power off.
In some embodiments, the first collecting module is a fingerprint collecting module or a face information collecting module;
the second acquisition module includes:
the detection sensor is arranged on an A column of the automobile or integrated in a driver seat and is used for collecting at least one physiological parameter of a driver;
and the pedal stroke sensor is arranged on the accelerator pedal and used for acquiring the data of the accelerator pedal.
The beneficial effect that technical scheme that this application provided brought includes:
according to the method and the device for identifying the mistaken stepping of the accelerator pedal of the automobile, after the whole automobile is electrified, the biological identification information of a driver can be obtained, and whether the driver has driving authority or not is judged based on the biological identification information; when the driver has driving right, at least one physiological parameter of the driver and accelerator pedal data are obtained, judgment is carried out based on a preset pedal data threshold value and a deviation rate threshold value of the physiological parameter, if the accelerator pedal data are larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, misstep of the accelerator pedal is judged, power output is cut off, and braking deceleration is carried out. Therefore, the method can not only aim at different drivers to carry out targeted accelerator pedal misstep identification, but also improve the identification accuracy of the misstep of the accelerator pedal, reduce the occurrence of missed judgment and missed judgment, and improve the driving safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a first flowchart of a method for identifying an accidental stepping on an accelerator pedal of an automobile according to an embodiment of the present application;
FIG. 2 is a block diagram of the structure of the system for identifying the mistaken stepping on the accelerator pedal of the automobile according to the embodiment of the application;
FIG. 3 is an installation diagram of the vehicle accelerator pedal mis-stepping recognition system according to the embodiment of the application;
fig. 4 is a second flowchart of the method for identifying an accidental stepping on an accelerator pedal of an automobile according to the embodiment of the application.
Reference numerals:
1. a fingerprint acquisition module; 2. a detection sensor; 3. a pedal stroke sensor; 4. mistakenly stepping on the identification control module; 5. a brake controller; 6. and (5) a vehicle control unit.
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. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the application provides an automobile accelerator pedal mistaken-stepping identification method and device, and solves the problems that in the related technology, mistaken stepping of an accelerator pedal cannot be effectively identified, and the reliability of preventing mistaken stepping of an accelerator is low.
As shown in fig. 1, the method for identifying the mistaken stepping on the accelerator pedal of the automobile according to the embodiment of the application includes the following steps:
s1, after the whole vehicle is electrified, obtaining biological identification information of a driver, and judging whether the driver has driving authority or not based on the biological identification information.
S2, when the driver has driving authority, acquiring at least one physiological parameter of the driver and accelerator pedal data;
and S3, acquiring a preset pedal data threshold and an acquired deviation rate threshold of the physiological parameter.
And S4, if the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is mistakenly stepped, cutting off power output, and executing braking deceleration.
If the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is smaller than or equal to the deviation rate threshold value of the corresponding physiological parameter, the state of the driver is stable, the driver possibly enters a passing state at the moment, power output does not need to be cut off, and braking and deceleration are carried out; if the deviation rate of a certain physiological parameter of the driver is greater than the deviation rate threshold of the corresponding physiological parameter, but the accelerator pedal data is less than or equal to the pedal data threshold, it indicates that only the physiological state of the driver is changed, but the driver does not mistakenly step on the vehicle by the accelerator pedal, and at the moment, the power output does not need to be cut off, and the braking deceleration is executed.
According to the method for identifying the mistaken stepping of the accelerator pedal of the automobile, after the whole automobile is electrified, the biological identification information of a driver can be acquired, and whether the driver has driving authority or not is judged based on the biological identification information; when the driver has driving right, at least one physiological parameter of the driver and accelerator pedal data are obtained, judgment is carried out based on a preset pedal data threshold value and a deviation rate threshold value of the physiological parameter, if the accelerator pedal data are larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, misstep of the accelerator pedal is judged, power output is cut off, and braking deceleration is carried out. Therefore, the method can not only aim at different drivers to carry out targeted accelerator pedal misstep identification, but also improve the identification accuracy of the misstep of the accelerator pedal, reduce the occurrence of missed judgment and missed judgment, and improve the driving safety.
Further, the biometric information may be face information or fingerprint information. In this embodiment, the step S1 of determining whether the driver has driving authority based on the biometric information specifically includes the steps of:
firstly, matching is carried out based on the face information or the fingerprint information and prestored face information or fingerprint information in a database, and at least one piece of prestored face information or fingerprint information with driving authority is stored in the database.
Then, it is determined whether the driver has driving authority according to the matching result.
Specifically, when the biometric information is face information, matching is performed based on the face information and pre-stored face information in a database, if matching is successful, it is determined that the driver has driving authority, and if matching is unsuccessful, it is determined that the driver does not have driving authority.
And when the biological identification information is fingerprint information, matching the fingerprint information with prestored fingerprint information in a database, if the matching is successful, judging that the driver has driving authority, and if the matching is unsuccessful, judging that the driver does not have the driving authority.
On the basis of the above embodiment, in the present embodiment, the physiological parameters include blood pressure BP, heart rate HR, and pulse P.
Preferably, the acquired physiological parameters include blood pressure and heart rate, when the driver has driving right, the blood pressure data of the driver can be acquired in real time through the blood pressure detection sensor, and the heart rate data of the driver can be acquired in real time through the heart rate detection sensor.
When the data of the accelerator pedal is larger than the pedal data threshold value, if the deviation rate of any data of the blood pressure and the heart rate is larger than the deviation rate threshold value of the data, the situation that the accelerator pedal is stepped on by mistake can be judged, then the power output is cut off, and braking deceleration is executed.
Optionally, the acquired physiological parameters include blood pressure and pulse, and when the driver has driving right, the blood pressure data of the driver can be acquired in real time through the blood pressure detection sensor, and meanwhile, the pulse data of the driver can be acquired in real time through the pulse detection sensor.
When the data of the accelerator pedal is larger than the pedal data threshold value, if the deviation rate of any data of the blood pressure and the pulse is larger than the deviation rate threshold value of the data, the situation that the accelerator pedal is mistakenly stepped can be judged, the power output is cut off, and braking deceleration is executed.
Optionally, the acquired physiological parameters may further include three of blood pressure, heart rate, and pulse.
In other embodiments, the acquired physiological parameter may also be any one of blood pressure, heart rate, and pulse. And when the accelerator pedal data is larger than the pedal data threshold, if the deviation rate of the acquired physiological parameter is larger than the deviation rate threshold of the physiological parameter, judging that the accelerator pedal is mistakenly stepped.
According to the relevant biological research, the blood pressure, the heart rate or the pulse can be instantly and rapidly increased when a person encounters an emergency and mental stress, so that the phenomenon that the mental stress and the blood pressure, the heart rate or the pulse are increased due to the emergency when the driver mistakenly steps on the accelerator pedal can be utilized to assist in judging whether the driver mistakenly steps on the vehicle.
Preferably, above-mentioned blood pressure detection sensor, heart rate detection sensor and pulse detection sensor all can be photoelectric type sensor or microwave radar sensor, adopt photoelectric sensor or microwave radar sensor to carry out non-contact measurement, need not to contact with the driver, not only can accurately acquire driver's physiological parameter fast, still can avoid causing the interference to the driver at the driving in-process, further improve accelerator pedal mistake and step on the degree of accuracy of discernment.
In the step S2, before acquiring any one of the physiological parameters of the driver, the method further includes the following steps:
a base value of the physiological parameter of the driver is set.
Accumulating the acquisition time of the physiological parameter from the first acquisition of the physiological parameter of the driver, and taking the basic value as a reference value of the physiological parameter when the accumulation does not reach the preset time length; namely, within the preset time length, the acquired physiological parameters are all judged by taking the basic value as a reference value.
When the accumulation reaches the preset time length, acquiring the average value of the physiological parameters in the preset time length, and taking the average value as the reference value of the physiological parameters acquired next time;
when the accumulated time exceeds the preset time length, when a physiological parameter is acquired every time, the first physiological parameter in the last preset time length is removed, and the average value of the acquired physiological parameter and the residual physiological parameters in the last preset time length is calculated and used as the reference value of the next acquired physiological parameter.
In this embodiment, the deviation rate of any physiological parameter is: the difference value of the current physiological parameter of the driver and the reference value thereof, and the ratio of the difference value to the reference value.
The reference value of the physiological parameter of the driver is dynamically updated and calculated, so that misjudgment and missed judgment caused by normal change of the body condition of the driver can be effectively avoided.
Optionally, the method for defining the reference value of any physiological parameter specifically includes:
a) when the total time length of the vehicle used by the driver in an accumulated way is less than a time length delta t predefined by the system, the driver inputs a basic value as a reference value (the vehicle can feed back the physiological parameter of the driver obtained immediately to the driver as a reference when the driver inputs the reference value);
b) when the total time for the driver to use the vehicle in an accumulated way reaches a time delta t predefined by a system, the basic value is still used as the reference value of the physiological parameter at the time, and then the average value of the physiological parameter in the delta t is calculated to replace the input value of the driver to be used as a new reference value of the physiological parameter;
c) when the total time for the driver to use the vehicle cumulatively is longer than the time delta t predefined by the system, the vehicle calculates the average value of the physiological parameters in the near delta t in a queue mode every time the vehicle acquires the physiological parameters (namely, the first physiological parameter in the last time delta t is removed, and the average value of the acquired physiological parameters and the average value of the rest physiological parameters in the last time delta t is calculated) so as to be used as the latest reference value of the physiological parameters.
Optionally, the preset duration of this embodiment is 1h, and when the physiological parameter of the driver obtained by accumulating is not more than 1h, the basic value of the physiological parameter (i.e., the input value of the driver) is used as the reference value of the physiological parameter, so as to perform the judgment of the mistaken stepping on the accelerator pedal; when the time for obtaining the physiological parameter accumulatively reaches 1h, obtaining the average value of the physiological parameter of the 1h, and updating the reference value, namely taking the average value as the reference value of the next obtained physiological parameter; after 1h, when a physiological parameter is acquired every time, the first physiological parameter in the last hour is removed, and the average value of the acquired physiological parameter and the rest physiological parameters in the last hour is calculated and used as the reference value of the next acquired physiological parameter.
Preferably, the physiological parameter is stored in a circular queue, the circular queue is an array with a fixed length, that is, a physiological parameter data set in a time duration, and each time a new value of the physiological parameter is obtained, the oldest value in the circular queue is replaced.
In the embodiment, after the whole vehicle is powered on, the biological identification information of the driver is acquired, and when whether the driver has the driving right or not is judged, the identity of the current driver can be identified. If the information of the driver A and the driver B is stored in the vehicle, when the driver A is identified to be driving, and the accelerator pedal is mistakenly stepped on, calling the physiological parameters of the driver A in the latest period of time to update the reference value; and when the driver B is identified to be driving, and the accelerator pedal is mistakenly stepped on, calling the physiological parameters of the driver B in the latest period of time to update the reference values.
In this embodiment, the accelerator pedal data is a pedal stroke or a pedal stroke change rate.
Optionally, in the step S3, when the preset pedal data threshold is acquired, the method specifically includes:
when the accelerator pedal data is a pedal stroke, the pedal data threshold is a pedal stroke threshold, and at this time, a preset pedal stroke threshold may be acquired.
When the accelerator pedal data is the pedal stroke change rate, the pedal data threshold is the pedal stroke change rate threshold, and at this time, a preset pedal stroke change rate threshold is obtained.
In this embodiment, in the step S3, the obtaining a preset deviation threshold of the physiological parameter specifically includes:
when the acquired physiological parameter includes blood pressure, a preset deviation rate threshold value of the blood pressure is acquired.
Wherein, the deviation rate of the blood pressure is as follows: the difference value between the current blood pressure of the driver and the blood pressure reference value, and the ratio of the blood pressure reference value.
When the acquired physiological parameter comprises a heart rate, acquiring a preset deviation rate threshold value of the heart rate.
Wherein, the deviation rate of the heart rate is as follows: the difference value between the current heart rate of the driver and the heart rate reference value, and the ratio of the heart rate reference value.
When the acquired physiological parameter includes a pulse, a preset deviation rate threshold of the pulse is acquired.
Wherein, the deviation rate of the pulse is as follows: the ratio of the difference value between the current pulse of the driver and the pulse reference value to the pulse reference value.
On the basis of the embodiment, when the driver is judged not to have the driving right based on the biological identification information of the driver, the whole vehicle is controlled to be powered off.
As shown in fig. 2, the system for identifying the mistaken stepping on the accelerator pedal of the automobile according to the embodiment of the application comprises a first acquisition module, a second acquisition module, a mistaken stepping identification control module, a vehicle control unit and a brake controller.
The first acquisition module is used for acquiring the biological identification information of the driver after the whole vehicle is powered on.
The false stepping recognition control module is used for judging whether the driver has driving authority or not based on the biological recognition information.
When the mistaken-stepping recognition control module judges that the driver has the driving right, the second acquisition module is used for acquiring at least one physiological parameter of the driver and acquiring data of an accelerator pedal.
The false stepping recognition control module is also used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter; and when the accelerator pedal data is larger than a pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is mistakenly stepped on, and sending a mistaken stepping signal of the accelerator pedal to the brake controller and the vehicle control unit.
The vehicle control unit is used for cutting off power output after receiving an accelerator pedal mistaken stepping signal.
The brake controller is used for executing braking deceleration after receiving the mistaken stepping signal of the accelerator pedal.
Optionally, the false stepping recognition control module determines whether the driver mistakenly steps on the accelerator pedal according to the following table 1:
TABLE 1
Wherein the condition a is: the accelerator pedal data is greater than the pedal data threshold value, 1 is true, and 0 is false; the condition b is: the deviation rate of any one physiological parameter is greater than the deviation rate threshold of the physiological parameter, 1 is true, and 0 is false.
In order to save the calculation force performance of the mistaken stepping recognition control module, reduce the performance and cost requirements of the mistaken stepping recognition control module and prolong the service life of the mistaken stepping recognition control module, when the condition a is false, the judgment of the condition b is not carried out.
Further, the mistaken-stepping identification control module comprises an authority identification submodule, an acquisition submodule and a control submodule.
The permission identification submodule is used for acquiring the biological identification information of the driver acquired by the first acquisition module and judging whether the driver has the driving permission or not based on the biological identification information.
The acquisition submodule is used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter.
The control submodule is used for acquiring the physiological parameters of the driver and the accelerator pedal data acquired by the second acquisition module, and acquiring a pedal data threshold value and a deviation rate threshold value of the physiological parameters acquired by the submodule; the control submodule is also used for comparing the accelerator pedal data with a pedal data threshold value and comparing the deviation rate of the physiological parameter of the driver with a deviation rate threshold value of the physiological parameter so as to identify whether the driver has mistaken stepping behaviors.
Optionally, when the right identification submodule determines that the driver does not have the driving right, the control submodule is further configured to control the entire vehicle to power off.
When the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, the control submodule is also used for judging that the accelerator pedal is mistakenly stepped on and sending a mistaken accelerator pedal stepping signal to the brake controller and the whole vehicle controller.
In this embodiment, the brake Controller is integrated in a vehicle ESC (Electronic Stability Controller); the Vehicle controller is an engine ECU (Electronic Control Unit) or a Vehicle Control Unit VCU (VCU).
Specifically, when the control submodule judges that the accelerator pedal is mistakenly stepped, the control submodule respectively sends an accelerator pedal mistaken stepping signal to the vehicle control unit and the brake controller through the CAN bus, the vehicle control unit controls the engine or the motor to cut off power output after receiving the accelerator pedal mistaken stepping signal, and the brake controller controls the magnitude of the braking force of each tire of the vehicle after receiving the accelerator pedal mistaken stepping signal to execute braking deceleration.
In this embodiment, the first collecting module is a fingerprint collecting module or a face information collecting module.
In this embodiment, the first collecting module is a fingerprint collecting module, and the fingerprint collecting module collects fingerprint information of a driver. Optionally, the fingerprint collecting module is disposed near the main driver seat, so as to collect fingerprint information of the driver.
In other embodiments, the first collecting module is a face information collecting module, and the face information collecting module collects face information of a driver. Optionally, the face information acquisition module is disposed near the main driver seat, so as to acquire face information of the driver.
Preferably, the second collecting module comprises a detection sensor and a pedal stroke sensor.
The detection sensor may be arranged on the a-pillar of the vehicle or integrated in the driver's seat, said detection sensor being adapted to acquire at least one physiological parameter of the driver. The physiological parameters include blood pressure, heart rate and pulse.
The pedal stroke sensor is arranged on an accelerator pedal and used for acquiring data of the accelerator pedal.
When the detection sensors comprise a blood pressure detection sensor and a heart rate detection sensor, the blood pressure and the heart rate of the driver can be acquired in real time.
When the detection sensors include a blood pressure detection sensor and a pulse detection sensor, the blood pressure and the pulse of the driver can be collected in real time.
In other embodiments, the detection sensors may further include a blood pressure detection sensor, a heart rate detection sensor, and a pulse detection sensor, i.e., the detection sensors may capture the blood pressure, heart rate, and pulse of the driver.
Alternatively, the above detection sensor may be selected from any one of a blood pressure detection sensor, a heart rate detection sensor, and a pulse detection sensor.
Preferably, the blood pressure detecting sensor, the heart rate detecting sensor and the pulse detecting sensor may be photoelectric sensors or microwave radar sensors.
The non-contact measurement is realized through the photoelectric sensor or the microwave radar sensor, the physiological parameters of a driver can be accurately acquired without contacting the driver, and the accuracy of mistakenly stepping on and identifying the accelerator pedal is improved.
As shown in fig. 3, optionally, the system for identifying an accelerator pedal mis-stepping of an automobile of the present embodiment includes a fingerprint acquisition module 1, a detection sensor 2, a pedal stroke sensor 3, a mis-stepping identification control module 4, a brake controller 5, and a vehicle control unit 6.
The automobile accelerator pedal comprises a fingerprint acquisition module 1, a detection sensor 2, a pedal stroke sensor 3, a brake controller 5 and a whole automobile controller 6, wherein the fingerprint acquisition module 1 is arranged at an automobile door handle on one side of a main driver seat, the detection sensor 2 is arranged on an A column on one side of the main driver seat, the fingerprint acquisition module 1, the detection sensor 2 and the pedal stroke sensor 3 are respectively in communication connection with a mistakenly-stepping identification control module 4, and the mistakenly-stepping identification control module 4 is respectively in communication connection with the brake controller 5 and the whole automobile controller 6 through an automobile CAN bus.
As shown in fig. 4, the method for identifying an accelerator pedal mis-stepping based on the system for identifying an accelerator pedal mis-stepping of an automobile of the embodiment specifically includes the following steps:
A1. after the whole vehicle is powered on, the fingerprint acquisition module 1 acquires the fingerprint information of a driver and sends the fingerprint information to the mistaken-stepping identification control module 4;
A2. the mistaken-stepping recognition control module 4 judges whether the driver has the driving authority, if so, the vehicle is turned to A4, otherwise, the vehicle is turned to A3.
A3. And the mistaken-stepping recognition control module 4 controls the whole vehicle to be powered off.
A4. The pedal travel sensor 3 collects data of an accelerator pedal and sends the data to the mistaken-stepping recognition control module 4, and the detection sensor 2 collects blood pressure and heart rate of a driver and sends the data to the mistaken-stepping recognition control module 4;
A5. the mistaken-stepping identification control module 4 judges whether the accelerator pedal data is larger than a pedal data threshold value, if so, the steering is to A6, otherwise, the steering is to A4;
A6. the mistaken-stepping recognition control module 4 judges whether the deviation rate of the blood pressure or the heart rate of the driver is larger than the corresponding deviation rate threshold value, if so, the vehicle is turned to A7, otherwise, the vehicle is turned to A4.
A7. The mistakenly-stepping recognition control module 4 sends an accelerator pedal mistakenly-stepping signal to the brake controller and the whole vehicle controller;
A8. the vehicle control unit cuts off power output, and the brake controller executes braking deceleration.
In this embodiment, when the accelerator pedal data is less than or equal to the pedal data threshold, it is directly determined that the accelerator pedal is not mistakenly stepped on, and the step a4 is returned to reduce the performance and cost requirements for the mistakenly stepped identification control module 4, and prolong the service life of the mistakenly stepped identification control module 4.
The system for identifying the mistaken stepping on the accelerator pedal of the automobile is suitable for the method for identifying the mistaken stepping on the accelerator pedal of each automobile, judges the driving authority of a driver through biological identification information of the driver, judges the mistaken stepping on the accelerator pedal of the driver in a targeted manner when the driver is judged to have the driving authority, judges the mistaken stepping on the accelerator pedal and cuts off power output to execute braking and deceleration only when the data of the accelerator pedal is greater than a pedal data threshold value and the deviation rate of any one physiological parameter of the driver is greater than a deviation rate threshold value of the physiological parameter; the method can not only carry out targeted accelerator pedal misstep identification for different drivers, avoid misjudgment caused by the change of the body state of the drivers, but also improve the identification accuracy rate of the misstep of the accelerator pedal so as to increase the driving safety.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention.
Claims (10)
1. An automobile accelerator pedal mistaken-stepping identification method is characterized by comprising the following steps:
after the whole vehicle is powered on, acquiring biological identification information of a driver, and judging whether the driver has driving authority or not based on the biological identification information;
when the driver has driving authority, acquiring at least one physiological parameter of the driver and accelerator pedal data;
acquiring a preset pedal data threshold and a deviation rate threshold of a physiological parameter;
and if the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is stepped on by mistake, cutting off power output and executing braking deceleration.
2. The method for identifying the mistaken stepping on the accelerator pedal of the automobile according to claim 1, wherein the biometric information is face information or fingerprint information;
judging whether the driver has driving authority or not based on the biological identification information, and specifically comprising the following steps:
matching the face information or the fingerprint information with prestored face information or fingerprint information in a database, wherein the database stores at least one piece of prestored face information or fingerprint information with driving authority;
and determining whether the driver has the driving authority according to the matching result.
3. The method for identifying the false stepping of the accelerator pedal of the automobile as claimed in claim 1, wherein: the physiological parameters include blood pressure, heart rate, and pulse.
4. The method for identifying the false stepping of the accelerator pedal of the vehicle as claimed in claim 1, wherein before acquiring any one of the physiological parameters of the driver, the method further comprises:
setting a base value of the physiological parameter of the driver;
accumulating the acquisition time of the physiological parameter from the first acquisition of the physiological parameter of the driver, and taking the basic value as a reference value of the physiological parameter when the accumulation does not reach a preset time length;
when the accumulation reaches the preset time length, acquiring the average value of the physiological parameter in the preset time length, and taking the average value as the reference value of the physiological parameter acquired next time;
when the accumulated time exceeds the preset time length, removing the first physiological parameter in the last preset time length each time one physiological parameter is obtained, and calculating the average value of the obtained physiological parameter and the rest physiological parameters in the last preset time length to be used as the reference value of the next obtained physiological parameter;
the rate of deviation of any physiological parameter is: the difference value of the physiological parameter and the reference value thereof, and the ratio of the difference value to the reference value.
5. The method for identifying the false stepping of the accelerator pedal of the automobile as claimed in claim 1, wherein: the accelerator pedal data is pedal travel or pedal travel change rate;
when the accelerator pedal data is pedal travel, the pedal data threshold is a pedal travel threshold;
and when the accelerator pedal data is the pedal stroke change rate, the pedal data threshold is the pedal stroke change rate threshold.
6. The method for identifying the false stepping of the accelerator pedal of the automobile as claimed in claim 1, wherein: and when the driver does not have the driving right, controlling the whole vehicle to be powered off.
7. The utility model provides a car accelerator pedal mistake is stepped on identification system which characterized in that, it includes:
the first acquisition module is used for acquiring biological identification information of a driver after the whole vehicle is powered on;
the mistaken-stepping identification control module is used for judging whether the driver has driving authority or not based on the biological identification information;
the second acquisition module is used for acquiring at least one physiological parameter of the driver and accelerator pedal data when the driver has driving authority;
the false stepping recognition control module is also used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter; when the accelerator pedal data is larger than the pedal data threshold value and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold value of the physiological parameter, judging that the accelerator pedal is mistakenly stepped on, and sending a mistaken stepping signal of the accelerator pedal to the brake controller and the vehicle control unit;
the vehicle control unit is used for cutting off power output after receiving an accelerator pedal mistaken stepping signal;
and the brake controller is used for executing braking deceleration after receiving the mistaken stepping signal of the accelerator pedal.
8. The system for identifying false stepping of an accelerator pedal of an automobile according to claim 7, wherein the false stepping identification control module comprises:
an authority identification sub-module for determining whether the driver has driving authority based on the biometric information;
the acquisition submodule is used for acquiring a preset pedal data threshold and a deviation rate threshold of the physiological parameter;
and the control submodule is used for judging that the accelerator pedal is mistakenly stepped when the accelerator pedal data is larger than the pedal data threshold and the deviation rate of any one physiological parameter of the driver is larger than the deviation rate threshold of the physiological parameter, and sending a mistaken stepping signal of the accelerator pedal to the brake controller and the whole vehicle controller.
9. The system for identifying stepping on an accelerator pedal of an automobile by mistake as claimed in claim 8, wherein: and when the authority identification submodule judges that the driver does not have the driving authority, the control submodule is also used for controlling the whole vehicle to power off.
10. The system for identifying stepping on an accelerator pedal of an automobile by mistake as claimed in claim 7, wherein: the first acquisition module is a fingerprint acquisition module or a human face information acquisition module;
the second acquisition module comprises:
the detection sensor is arranged on an A column of the automobile or integrated in a driver seat and is used for collecting at least one physiological parameter of a driver;
and the pedal stroke sensor is arranged on the accelerator pedal and used for acquiring the data of the accelerator pedal.
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