Device and method for preventing mistakenly stepping on automobile accelerator

Abstract

The invention discloses a device and method for preventing stepping on an automobile accelerator by mistake, and the device comprises a UWB detection unit which is used for obtaining the physiological parameters of a driver in real time; the power control unit is used for detecting the voltage of the accelerator pedal rheostat in real time; the main control unit is used for outputting a locking power command signal when the physiological parameters deviate from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold value; the alarm unit is used for sending an alarm signal according to the locking power command signal; wherein the power control unit is further used for locking power output according to the locking power command signal and executing braking deceleration; the main control unit is further used for outputting an alarm releasing signal to control the alarm unit to stop sending out the alarm signal when the physiological parameters deviate from the preset range and the voltage drop of the accelerator pedal rheostat is lower than a threshold value. When a driver is in an abnormal state, such as illness or scare, an alarm signal can be sent out, power output is locked, the driver is prohibited from continuing to accelerate, and driving safety is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile safety, and in particular to a device and method for preventing accidental stepping on an automobile accelerator. Background Art

[0002] Driver behavior plays a decisive role in traffic safety. If a driver is emotionally unstable, such as feeling unwell or unconscious, they may mistake the accelerator for the brake, or be suddenly frightened and panic and mistake the accelerator for the brake, which can affect driving and pose a serious safety hazard. Summary of the Invention

[0003] In view of this, it is necessary to provide a device for preventing accidental stepping on the accelerator of a car to improve driving safety.

[0004] One embodiment of the present invention provides a device for preventing accidental stepping on the accelerator of a car, comprising a UWB detection unit for obtaining the driver's physiological parameters in real time; a power control unit for detecting the voltage of an accelerator pedal rheostat in real time; a main control unit electrically connected to the UWB detection unit and the power control unit, for outputting a locking power command signal when the physiological parameters deviate from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold value; an alarm unit electrically connected to the main control unit, for issuing an alarm signal according to the locking power command signal; wherein the power control unit is further used to lock the power output according to the locking power command signal and perform braking deceleration; the main control unit is further used to output an alarm release signal to control the alarm unit to stop issuing an alarm signal when the physiological parameters deviate from the preset range and the voltage of the accelerator pedal rheostat drops below a threshold value.

[0005] Preferably, the UWB detection unit is also used to output a first control signal when the physiological parameter deviates from a preset range; the power control unit is also used to output a first throttle level signal when the voltage of the throttle pedal rheostat exceeds a threshold, and output a second throttle level signal when the voltage does not exceed the threshold; the main control unit is also used to output a locking power command signal based on the first control signal and the first throttle level signal, and output the alarm release signal based on the first control signal and the second throttle level signal.

[0006] Preferably, the device for preventing accidental stepping on the car accelerator also includes a detection unit, wherein: the detection unit is electrically connected to the main control unit, and is used to detect the state of the brake pedal, output a first brake level signal when the brake pedal is stepped on, and output a second brake level signal when the brake pedal is released; the main control unit is also used to output an unlocking power instruction to the power control unit when a preset number of first accelerator level signals and second brake level signals are received within a preset time.

[0007] Preferably, the detection unit is pre-set with a correspondence table of brake light voltage, brake pedal status and level signal; when the brake light voltage is detected to be a high level, the detection unit outputs a first brake level signal according to the correspondence table; when the brake light voltage is detected to be a low level, the detection unit outputs a second brake level signal according to the correspondence table.

[0008] Preferably, the UWB detection unit includes: a UWB antenna, used to transmit a pulse signal to the driver and receive an echo signal; a UWB chip, electrically connected to the UWB antenna, used to output the pulse signal and analyze and process the echo signal to obtain the physiological parameters; a control unit, electrically connected to the UWB chip and the main control unit, used to transmit the physiological parameters to the main control unit.

[0009] One embodiment of the present invention also provides a method for preventing accidental stepping on the accelerator of a car, which is applied to a device for preventing accidental stepping on the accelerator of a car, the device for preventing accidental stepping on the accelerator of a car comprising a UWB detection unit, a power control unit, a main control unit and an alarm unit, the method comprising the following steps: obtaining the driver's physiological parameters in real time through the UWB detection unit; detecting the voltage of the accelerator pedal resistor in real time through the power control unit; when the physiological parameters deviate from a preset range and the voltage of the accelerator pedal resistor exceeds a threshold value, outputting a locking power command signal through the main control unit; the alarm unit issuing an alarm signal according to the locking power command signal; the power control unit locking the power output according to the locking power command signal and performing braking deceleration; when the physiological parameters deviate from the preset range and the voltage of the accelerator pedal resistor drops below a threshold value, the main control unit outputting a release alarm signal to control the alarm unit to stop issuing an alarm signal.

[0010] Preferably, the step of outputting a locking power command signal through the main control unit when the physiological parameter deviates from the preset range and the voltage of the accelerator pedal rheostat exceeds a threshold value specifically includes: when the physiological parameter deviates from the preset range, outputting a first control signal through the UWB detection unit; when the voltage of the accelerator pedal rheostat exceeds the threshold value, outputting a first throttle level signal through the power control unit, and when the voltage does not exceed the threshold value, outputting a second throttle level signal through the power control unit; the main control unit outputs a locking power command signal according to the first control signal and the first throttle level signal, and also outputs the alarm release signal according to the first control signal and the second throttle level signal.

[0011] Preferably, the device for preventing accidental stepping on the car accelerator also includes a detection unit, and the method also includes: detecting the state of the brake pedal in real time by the detection unit, outputting a first brake level signal when the brake pedal is stepped on, and outputting a second brake level signal when the brake pedal is released; when the main control unit receives a preset number of first accelerator level signals and second brake level signals within a preset time, it outputs an unlocking power instruction; and the power control unit releases the power lock of the accelerator according to the unlocking power instruction.

[0012] Preferably, the step of detecting the state of the brake pedal in real time by the detection unit, outputting a first brake level signal when the brake pedal is depressed, and outputting a second brake level signal when the brake pedal is released, specifically includes: presetting a correspondence table of brake light voltage, brake pedal state and level signal; when the brake light voltage is detected to be at a high level, the detection unit outputs the first brake level signal according to the correspondence table; when the brake light voltage is detected to be at a low level, the detection unit outputs the second brake level signal according to the correspondence table.

[0013] Preferably, the UWB detection unit includes a UWB antenna, a UWB chip and a control unit. The step of obtaining the driver's physiological parameters in real time through the UWB detection unit specifically includes: outputting a pulse signal through the UWB chip; transmitting the pulse signal to the driver through the UWB antenna and receiving an echo signal; the UWB chip analyzes and processes the echo signal to obtain the physiological parameters; and the control unit transmits the physiological parameters to the main control unit.

[0014] Compared with the existing technology, the device and method for preventing accidental stepping on the car accelerator provided by the embodiments of the present invention obtain the driver's physiological parameters in real time through the UWB detection unit to confirm whether the driver has an abnormal condition, and detect the voltage of the accelerator pedal rheostat in real time through the power control unit to confirm whether the driver is accelerating. Therefore, when the driver has an abnormal condition, such as being ill or frightened and the driver is accelerating, the alarm unit sends an alarm signal and the power control unit locks the power output, prohibiting the driver from continuing to accelerate, thereby ensuring driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a system framework diagram of an embodiment of a device for preventing accidental stepping on the accelerator of a car according to the present invention.

[0016] Figure 2 This is a schematic diagram of the output signal of the UWB detection unit of the device for preventing accidental stepping on the accelerator of a car according to the present invention.

[0017] Figure 3 This is a module diagram of another embodiment of the device for preventing accidental pressing of the automobile accelerator of the present invention.

[0018] Figure 4 The figure is a flow chart of an embodiment of a device for preventing accidental stepping on the accelerator of a car according to the present invention.

[0019] Description of main component symbols

[0020] 1: A device to prevent accidental stepping on the car accelerator

[0021] 10: UWB detection unit

[0022] 11: Power control unit

[0023] 12: Main control unit

[0024] 13: Alarm unit

[0025] 14: Detection Unit

[0026] 100: UWB antenna

[0027] 101: UWB chip

[0028] 102: Control unit

[0029] S400~S410: Steps

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] See also Figure 1 As shown, Figure 1 This is a block diagram of an embodiment of a device 1 for preventing accidental accelerator pedaling in a vehicle according to the present invention. In this embodiment, the device 1 is used in a vehicle and includes a UWB (Ultra-Wide Band) detection unit 10, a power control unit 11, a main control unit 12, and an alarm unit 13. The UWB detection unit 10 is used to obtain the driver's physiological parameters in real time. When the physiological parameters deviate from a preset range, the driver is deemed to have experienced an abnormal condition. The physiological parameters are illustrated using myocardial activity data as an example, but are not limited to this.

[0034] Under normal circumstances, the human myocardium contracts and expands periodically, and the amplitude of each contraction is roughly equal. In sudden situations such as illness or fright, the amplitude of myocardial movement will immediately change significantly. By obtaining the driver's physiological parameters, the driver's emotional fluctuations can be understood in real time. The UWB detection unit 10 emits a narrowband pulse electromagnetic wave with a frequency of GHz to the driver to generate an echo signal. The myocardial movement causes the repetition period of the pulse sequence of the echo signal to change. The UWB detection unit 10 obtains myocardial activity data by analyzing and processing the pulse sequence of the echo signal. During the actual detection process, the UWB detection unit 10 will simultaneously detect the driver's myocardial signal, respiratory signal and other noise signals. The UWB detection unit 10 can filter out the respiratory signal and myocardial signals below the threshold through algorithm processing, and retain the myocardial signals above the threshold. Filtering technology is a relatively mature technology and will not be described in detail here. For reference Figure 2 , Figure 2This figure shows the output signals of the UWB detection unit of the device 10 for preventing accidental accelerator pedaling according to the present invention. When the driver is in a normal state, the UWB detection unit 10 outputs low-amplitude noise. When the driver experiences an abnormal condition, such as a seizure or sudden shock, the UWB detection unit outputs a high-amplitude pulse.

[0035] In this embodiment, the power control unit 11 is used to detect the voltage of the vehicle's accelerator pedal rheostat (not shown) in real time. The voltage of the accelerator pedal rheostat changes with the force applied to the accelerator plate. By detecting the voltage of the accelerator pedal rheostat, it can be determined whether the vehicle's accelerator is depressed, causing the vehicle to accelerate. When the voltage of the accelerator pedal rheostat exceeds a threshold, the accelerator is determined to be depressed, causing the vehicle to accelerate. The main control unit 12 is electrically connected to the UWB detection unit 10 and the power control unit 11 and is configured to output a lock power command signal when the physiological parameters deviate from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold. The alarm unit 13 is electrically connected to the main control unit 12 and is configured to issue an alarm signal based on the lock power command signal. The alarm unit 13 may include a warning light and a buzzer. When the main control unit 12 outputs the lock power command signal, the warning light illuminates and the buzzer sounds an alarm to alert the driver. Simultaneously, the power control unit 11 locks the power output and performs braking deceleration based on the lock power command signal. When the driver releases the accelerator pedal, that is, when the physiological parameter deviates from the preset range and the voltage of the accelerator pedal resistor drops below the threshold, the main control unit 11 also outputs a release alarm signal to control the alarm unit 13 to stop issuing the alarm signal.

[0036] In this embodiment, when the physiological parameter deviates from a preset range, the UWB detection unit 10 outputs a first control signal to the main control unit 12. Physiological parameters typically have a normal range, such as heart rate, between 60 and 100 beats per minute. Physiological parameters vary depending on the driver's age, gender, and other physiological conditions. Therefore, in practical applications, the preset range can be determined based on the driver's actual age, gender, and underlying medical conditions, or can be set based on the driver's comprehensive medical examination report, without limitation. When the voltage of the accelerator pedal rheostat exceeds a threshold, the power control unit 12 outputs a first throttle level signal; when the voltage does not exceed the threshold, a second throttle level signal is output. Specifically, a 20% range voltage value is used as an example, but this is not intended to be limiting. Using the 20% range voltage value as the threshold, the voltage value is encoded: a value greater than 20% is encoded as 1, i.e., a high level output; a value less than 20% is encoded as 0, i.e., a low level output.

[0037] The main control unit 12 outputs a locking power command signal according to the first control signal and the first throttle level signal, and outputs the alarm release signal according to the first control signal and the second throttle level signal.

[0038] In this embodiment, the UWB detection unit obtains the driver's physiological parameters in real time to confirm whether the driver has an abnormal condition, and the power control unit detects the voltage of the accelerator pedal resistor in real time to confirm whether the driver is accelerating. Therefore, when the driver has an abnormal condition, such as being ill or frightened (at this time the physiological parameters exceed the preset value range) and the driver is accelerating, the alarm unit sends an alarm signal and the power control unit locks the power output, prohibiting the driver from continuing to accelerate, thereby ensuring driving safety.

[0039] See also Figure 3 As shown, Figure 3 This is a block diagram of another embodiment of the present invention's device 1 for preventing accidental accelerator pedaling. In this embodiment, the device 1 is used in a vehicle and includes a UWB detection unit 10, a power control unit 11, a main control unit 12, an alarm unit 13, and a detection unit 14. The connection and operating principles of the UWB detection unit 10, power control unit 11, main control unit 12, and alarm unit 13 are similar to those of the previous embodiment and will not be further described here.

[0040] In this embodiment, the UWB detection unit 10 may include a UWB antenna 100, a UWB chip 101 and a control unit 102. The UWB chip 101 is electrically connected to the UWB antenna 100 and is used to output a pulse signal. The UWB antenna 100 transmits the pulse signal to the driver and receives the echo signal reflected from the driver. The UWB chip 101 is also used to analyze and process the echo signal to obtain the physiological parameters. The control unit 102 is electrically connected to the UWB chip 101 and the main control unit 102 and is used to transmit the physiological parameters to the main control unit 102. The processing circuit for amplifying and filtering the pulse signal and the echo signal can be integrated in the UWB chip, which is not limited here.

[0041] In this embodiment, the detection unit 14 is electrically connected to the main control unit 12 and is configured to detect the state of the brake pedal. It outputs a first brake level signal when the brake pedal is depressed and a second brake level signal when the brake pedal is released. Specifically, the detection unit 14 is pre-set with a correspondence table between brake light voltage, brake pedal state, and level signals. When the brake light voltage is detected as high, the brake pedal is depressed, and the detection unit 14 outputs the first brake level signal according to the correspondence table. When the brake light voltage is detected as low, the brake pedal is released, and the detection unit 14 outputs the second brake level signal according to the correspondence table. Upon receiving a predetermined number of the first and second brake level signals within a predetermined time period, the main control unit 12 outputs a release power command to the power control unit 11, which then restores the throttle acceleration function according to the release power command. In one specific embodiment, the first brake level signal is a high level signal, the second brake level signal is a low level signal, and the first throttle level signal is a high level signal, and the second throttle level signal is a low level signal. The preset time is 2S, and the preset number is 3, that is, when the driver releases the brake pedal and steps on the accelerator pedal three times in succession within 2S, the main control unit 12 outputs an unlocking power instruction to the power control unit 11 to restore the accelerator acceleration function of the vehicle.

[0042] In this embodiment, if the power output is currently locked, when the driver steps on the accelerator pedal continuously for a preset number of times within a preset time, the main control unit 12 outputs an unlock power instruction to the power control unit to restore the throttle acceleration function of the car, thereby ensuring that the driver can drive normally when normal is restored.

[0043] See also Figure 4 As shown, Figure 4 This is a flow chart of an embodiment of a method for preventing accidental accelerator pedaling according to the present invention. In this embodiment, the method is applied to a device 1 for preventing accidental accelerator pedaling. The device 1 includes a UWB detection unit 10, a power control unit 11, a main control unit 12, an alarm unit 13, and a detection unit 14. The method includes:

[0044] Step S400: Acquire the driver's physiological parameters in real time through the UWB detection unit 10;

[0045] Specifically, when the physiological parameters deviate from the preset range, the driver has an abnormal situation. The physiological parameters are illustrated by myocardial activity data as an example, but are not limited to this. Under normal circumstances, the human myocardium contracts and expands periodically, and the amplitude is roughly equal each time. In sudden situations such as illness or fright, the amplitude of myocardial movement will immediately change significantly. By obtaining the driver's physiological parameters, the driver's emotional fluctuations can be grasped in real time. The UWB detection unit 10 emits a narrowband pulse electromagnetic wave with a frequency of GHz to irradiate the driver to generate an echo signal. The myocardial movement causes the repetition period of the pulse sequence of the echo signal to change. The UWB detection unit 10 obtains the myocardial activity data by analyzing and processing the pulse sequence of the echo signal. In the actual detection process, the UWB detection unit 10 will simultaneously detect the driver's myocardial signal, respiratory signal and other noise signals. The UWB detection unit 10 can filter out the respiratory signal and myocardial signals below the threshold through algorithm processing, and retain the myocardial signals above the threshold. Filtering technology is a relatively mature technology and will not be described in detail here. For reference Figure 2 , Figure 2 This figure shows the output signals of the UWB detection unit of the device 10 for preventing accidental accelerator pedaling according to the present invention. When the driver is in a normal state, the UWB detection unit 10 outputs low-amplitude noise. When the driver experiences an abnormal condition, such as a seizure or sudden shock, the UWB detection unit outputs a high-amplitude pulse.

[0046] In a specific embodiment of the present invention, the UWB detection unit 10 may include a UWB antenna 100, a UWB chip 101, and a control unit 102. Step S400 may specifically include: outputting a pulse signal via the UWB chip 101; transmitting the pulse signal to the driver via the UWB antenna 100 and receiving an echo signal; analyzing and processing the echo signal by the UWB chip 101 to obtain the physiological parameters; and transmitting the physiological parameters to the main control unit 12 by the control unit 102.

[0047] Step S402 : Detecting the voltage of the accelerator pedal resistor in real time via the power control unit 11 .

[0048] Specifically, the voltage of the accelerator pedal rheostat changes with the force applied to the accelerator plate. By detecting the voltage of the accelerator pedal rheostat, it can be determined whether the accelerator is being pressed, causing the vehicle to accelerate. When the voltage of the accelerator pedal rheostat exceeds a threshold, it is determined that the accelerator is being pressed, causing the vehicle to accelerate.

[0049] Step S404 : When the physiological parameter deviates from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold, a locking power command signal is outputted via the main control unit 12 .

[0050] Specifically, the 20% range voltage value is used as the threshold value for explanation, but it is not limited to this. The 20% range voltage value is used as the threshold value to encode the voltage value. If it is greater than 20% of the range, it is encoded as 1, that is, a high level is output. If it is less than 20% of the range, it is encoded as 0, that is, a low level is output.

[0051] Step S406: the alarm unit 13 issues an alarm signal according to the locking power command signal.

[0052] Specifically, the alarm unit 13 may include a warning light and a buzzer. When the main control unit 12 outputs the locking power command signal, the warning light turns on and the buzzer sounds an alarm to remind the driver.

[0053] Step S408: The power control unit 11 locks the power output according to the locking power instruction signal and performs braking deceleration.

[0054] Step S410: When the physiological parameter deviates from the preset range and the voltage of the accelerator pedal resistor drops below a threshold, the main control unit 12 outputs a release alarm signal to control the alarm unit 13 to stop issuing the alarm signal.

[0055] In this embodiment, when the physiological parameter deviates from the preset range, the UWB detection unit 10 outputs a first control signal; when the voltage of the accelerator pedal rheostat exceeds the threshold, the power control unit 11 outputs a first throttle level signal, and when the voltage of the accelerator pedal rheostat does not exceed the threshold, the power control unit 11 outputs a second throttle level signal; the main control unit 12 outputs a locking power command signal based on the first control signal and the first throttle level signal, and also outputs an alarm release signal based on the first control signal and the second throttle level signal.

[0056] In this embodiment, if the power output is currently locked, the power control unit 11 can release the throttle power lock when the driver returns to normal, allowing normal driving. Specifically, the detection unit 14 detects the brake pedal status in real time, outputting a first brake level signal when the brake pedal is depressed and a second brake level signal when the brake pedal is released. Upon receiving a preset number of first and second brake level signals within a preset time, the main control unit 12 outputs a power release command. The power control unit 11 releases the throttle power lock according to the power release command. In actual use, the detection unit 14 is pre-set with a correspondence table between brake light voltage, brake pedal status, and level signal. When the brake light voltage is detected to be high, the detection unit 14 outputs a first brake level signal according to the correspondence table. When the brake light voltage is detected to be low, the detection unit outputs a second brake level signal according to the correspondence table.

[0057] Compared with the existing technology, the device and method for preventing accidental stepping on the car accelerator provided by the embodiments of the present invention obtain the driver's physiological parameters in real time through the UWB detection unit to confirm whether the driver has an abnormal condition, and detect the voltage of the accelerator pedal rheostat in real time through the power control unit to confirm whether the driver is accelerating. Therefore, when the driver has an abnormal condition, such as being ill or frightened and the driver is accelerating, the alarm unit sends an alarm signal and the power control unit locks the power output, prohibiting the driver from continuing to accelerate, thereby ensuring driving safety.

[0058] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. Any appropriate changes and modifications to the above embodiments fall within the scope of the present invention as long as they are within the spirit of the present invention.

Claims

1. A device for preventing accidental stepping on the accelerator of a car, characterized in that: include: UWB detection unit, used to obtain the driver's physiological parameters in real time; Power control unit, used to detect the voltage of the accelerator pedal resistor in real time; a main control unit, electrically connected to the UWB detection unit and the power control unit, configured to output a locking power command signal when the physiological parameter deviates from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold; An alarm unit is electrically connected to the main control unit and is used to send an alarm signal according to the locking power command signal; The power control unit is further configured to lock the power output according to the locking power instruction signal and perform braking deceleration; The main control unit is further configured to output a clear alarm signal to control the alarm unit to stop issuing an alarm signal when the physiological parameter deviates from a preset range and the voltage of the accelerator pedal rheostat drops below a threshold.

2. The device for preventing accidental stepping on the accelerator of a car according to claim 1, characterized in that: The UWB detection unit is further configured to output a first control signal when the physiological parameter deviates from a preset range; The power control unit is further configured to output a first throttle level signal when the voltage of the throttle pedal rheostat exceeds a threshold value, and output a second throttle level signal when the voltage does not exceed the threshold value; The main control unit is further configured to output a locking power command signal according to the first control signal and the first throttle level signal, and output the alarm release signal according to the first control signal and the second throttle level signal.

3. The device for preventing accidental stepping on the accelerator of a car according to claim 2, characterized in that: Also included is a detection unit, wherein: The detection unit is electrically connected to the main control unit, and is used to detect the state of the brake pedal, outputting a first brake level signal when the brake pedal is depressed, and outputting a second brake level signal when the brake pedal is released; The main control unit is further configured to output a unlocking power instruction to the power control unit when a preset number of first throttle level signals and second brake level signals are received within a preset time.

4. The device for preventing accidental stepping on the accelerator of a car according to claim 3, characterized in that: The detection unit is pre-set with a correspondence table of brake light voltage, brake pedal status and level signal; When the brake light voltage is detected to be at a high level, the detection unit outputs a first brake level signal according to the corresponding relationship table; When the brake light voltage is detected to be at a low level, the detection unit outputs a second brake level signal according to the corresponding relationship table.

5. The device for preventing accidental stepping on the accelerator of a car according to claim 1, characterized in that: The UWB detection unit includes: a UWB antenna for transmitting a pulse signal to the driver and receiving an echo signal; A UWB chip, electrically connected to the UWB antenna, configured to output the pulse signal and analyze and process the echo signal to obtain the physiological parameters; A control unit is electrically connected to the UWB chip and the main control unit, and is used to transmit the physiological parameters to the main control unit.

6. A method for preventing accidental stepping on the accelerator of a car, applied to a device for preventing accidental stepping on the accelerator of a car, the device comprising a UWB detection unit, a power control unit, a main control unit and an alarm unit, characterized in that: The method comprises the following steps: Acquiring the driver's physiological parameters in real time through the UWB detection unit; Real-time detection of the voltage of the accelerator pedal resistor by the power control unit; When the physiological parameter deviates from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold, a locking power command signal is outputted through the main control unit; The alarm unit sends an alarm signal according to the locking power command signal; The power control unit locks the power output according to the locking power instruction signal and performs braking deceleration; When the physiological parameter deviates from a preset range and the voltage of the accelerator pedal resistor drops below a threshold value, the main control unit outputs an alarm cancellation signal to control the alarm unit to stop issuing an alarm signal.

7. The method for preventing accidental stepping on the accelerator of a car according to claim 6, characterized in that: The step of outputting a locking power command signal through the main control unit when the physiological parameter deviates from a preset range and the voltage of the accelerator pedal rheostat exceeds a threshold specifically includes: When the physiological parameter deviates from a preset range, outputting a first control signal through the UWB detection unit; When the voltage of the accelerator pedal rheostat exceeds a threshold value, the power control unit outputs a first throttle level signal; when the voltage does not exceed the threshold value, the power control unit outputs a second throttle level signal; The main control unit outputs a locking power instruction signal according to the first control signal and the first throttle level signal, and also outputs the alarm release signal according to the first control signal and the second throttle level signal.

8. The method for preventing accidental stepping on the accelerator of a car according to claim 7, characterized in that: The device for preventing accidental stepping on the accelerator of a vehicle further includes a detection unit, and the method further includes: The detection unit detects the state of the brake pedal in real time, outputs a first brake level signal when the brake pedal is depressed, and outputs a second brake level signal when the brake pedal is released; When the main control unit receives a preset number of first throttle level signals and second brake level signals within a preset time, the main control unit outputs a unlocking power instruction; The power control unit releases the power lock of the throttle according to the unlocking power command.

9. The method for preventing accidental stepping on the accelerator of a car according to claim 8, characterized in that: The step of detecting the state of the brake pedal in real time by the detection unit, outputting a first brake level signal when the brake pedal is depressed, and outputting a second brake level signal when the brake pedal is released, specifically includes: A corresponding relationship table of brake light voltage, brake pedal status and level signal is preset; When the brake light voltage is detected to be at a high level, the detection unit outputs a first brake level signal according to the corresponding relationship table; When it is detected that the brake light voltage is at a low level, the detection unit outputs a second brake level signal according to the corresponding relationship table.

10. The method for preventing accidental stepping on the accelerator of a car according to claim 1, characterized in that: The UWB detection unit includes a UWB antenna, a UWB chip, and a control unit. The step of obtaining the driver's physiological parameters in real time through the UWB detection unit specifically includes: Outputting a pulse signal through the UWB chip; transmitting the pulse signal to the driver via the UWB antenna and receiving an echo signal; The UWB chip analyzes and processes the echo signal to obtain the physiological parameters; The control unit transmits the physiological parameters to the main control unit.

Images