Automobile driver fatigue prompting device and method based on tactile prompt

Abstract

The invention discloses an automobile driver fatigue prompt device and method based on tactile prompt, and relates to the technical field of automobile driving safety, the device comprises a steering wheel skeleton, a control unit, a vibration motor, a power supply and a voltage control module; a plurality of vibration motors are mounted on the steering wheel framework; the voltage control module is used for adjusting the voltage to a normal working range of the vibration motor; the control unit is used for controlling the pin and the MOSFET control module to drive the vibration motor through a Python control code when receiving a fatigue driving detection signal; the vibration motor is used for reminding a driver in a mode of vibrating the steering wheel when receiving a fatigue driving detection signal. The fatigue prompt effect on the driver can be improved through touch prompt, and therefore the safety of automobile driving is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile driving safety, and in particular to a device and method for reminding automobile drivers of fatigue based on tactile prompts. Background Art

[0002] With the rapid advancement of science and technology and the continuous improvement of economic level, cars have become an important means of transportation for people's daily travel. The rapid growth of the number of cars per thousand people has made road safety issues increasingly prominent. According to the "2015 Global Road Safety Status Report" released by the World Health Organization (WHO), about 1.25 million people lose their lives in road traffic accidents every year. Among them, driver fatigue driving is an important cause of traffic accidents, accounting for a considerable proportion of the number of accidents.

[0003] In response to this problem, many automobile manufacturers have begun to equip vehicles with fatigue reminder devices in order to reduce traffic accidents caused by driver fatigue. However, the fatigue reminder devices currently on the market still have certain limitations in practical applications. Most fatigue reminder devices are mainly based on hearing and vision, for example, by setting a warning light that automatically flashes when fatigue driving is detected, or by sounding a buzzer in the car to remind the driver.

[0004] However, in actual use, these prompts have certain problems. When drivers are distracted or fatigued, they may not be able to effectively receive and process these warning signals, resulting in incorrect judgments and operations. Traditional visual prompts require drivers to divert their attention from the road, which may cause distraction and potential danger. And audio prompts may be covered by surrounding noise, making the effect greatly reduced. Summary of the invention

[0005] The purpose of the present application is to provide a device and method for reminding the driver of fatigue based on tactile prompts, which can provide the driver with better fatigue prompt effects.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides a car driver fatigue reminder device based on tactile reminder, including: a steering wheel frame, a control unit, a vibration motor, a power supply and a voltage control module.

[0008] A plurality of vibration motors are installed on the steering wheel frame.

[0009] The voltage control module is used to adjust the voltage to a range within which the vibration motor works normally.

[0010] The control unit is used to drive the vibration motor through Python control code, control pins and MOSFET control module when receiving a signal of fatigue driving detection.

[0011] The vibration motor is used to remind the driver by vibrating the steering wheel when receiving a signal of fatigue driving detection.

[0012] Optionally, the vibration motor is an AC linear vibration motor.

[0013] Optionally, the vibration motor includes a first vibration motor and a second vibration motor; the first vibration motor and the second vibration motor are respectively arranged at the three o'clock direction and the nine o'clock direction of the steering wheel frame.

[0014] Optionally, the voltage control module consists of a polymer battery, a step-down module, a connecting wire and an AWG wire.

[0015] The input positive electrode of the step-down module is connected to the positive electrode of the power supply through a connecting line, and the input negative electrode of the step-down module is connected to the negative electrode of the power supply through a connecting line.

[0016] Optionally, the input positive pole of the MOSFET module in the control unit is connected to the output positive pole of the buck module; the input negative pole of the MOSFET module is connected to the output negative pole of the buck module.

[0017] Optionally, the positive pole of the vibration motor is connected to the output positive pole of the MOSFET module, and the negative pole of the vibration motor is connected to the output negative pole of the MOSFET module.

[0018] Optionally, the control unit receives the fatigue prompt signal by wireless or wired communication.

[0019] In a second aspect, the present application provides a method for prompting a driver's fatigue based on tactile prompts, comprising:

[0020] Acquire a detection signal of a fatigue driving detection system; the detection signal includes fatigue driving and non-fatigue driving.

[0021] When the detection signal indicates fatigue driving, the vibration motor is driven based on the control unit.

[0022] Reacquire the detection signal of the fatigue driving detection system.

[0023] When the detection signal is non-drowsy driving, the reminder ends.

[0024] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0025] The present application provides a device and method for reminding a car driver of fatigue based on tactile prompts. The system includes a steering wheel frame, a control unit, a vibration motor, a power supply and a voltage regulation module. Multiple vibration motors are configured on the steering wheel frame. The voltage regulation module is responsible for adjusting the voltage to the normal working range of the vibration motor. When the control unit detects a fatigue driving signal, it activates the vibration motor through Python control code, control pins and MOSFET control module. When the vibration motor receives a fatigue driving signal, it reminds the driver by vibrating the steering wheel. The present application can significantly improve the effect of driver fatigue warning through a tactile feedback mechanism, thereby enhancing the safety of driving a car. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a structural diagram of a car driver fatigue reminder device based on tactile reminder provided in one embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of the Python control code provided in one embodiment of the present application.

[0029] Figure 3 This is a flow chart of a method for prompting a driver's fatigue based on tactile prompts provided in an embodiment of the present application.

[0030] Steering wheel frame-1, vibration motor-2, voltage control module-3, power supply-4, control unit-5. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The purpose of the present application is to provide a device and method for reminding the driver of fatigue based on tactile prompts, which can provide the driver with better fatigue prompt effects.

[0033] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Embodiment 1

[0035] like Figure 1 As shown, this embodiment provides a car driver fatigue prompting device based on tactile prompting, including: a steering wheel frame 1, a control unit 5, a vibration motor 2, a power supply 4 and a voltage control module 3.

[0036] A plurality of vibration motors 2 are installed on the steering wheel frame 1 .

[0037] The voltage control module 3 is used to adjust the voltage to a range within which the vibration motor 2 works normally.

[0038] The control unit 5 is used to drive the vibration motor 2 through Python control code, control pins and MOSFET control module when receiving the signal of fatigue driving detection.

[0039] The vibration motor 2 is used to remind the driver by vibrating the steering wheel when receiving a signal of fatigue driving detection.

[0040] In this embodiment, the vibration motor 2 adopts an AC linear vibration motor 2. The vibration motor 2 includes a first vibration motor 2 and a second vibration motor 2; the first vibration motor 2 and the second vibration motor 2 are installed in the vibrator housing, respectively installed at the three o'clock direction and the nine o'clock direction of the car steering wheel, and the corresponding position of the steering wheel is provided with a mounting hole with a top surface opening, the vibration motor 2 is placed in the mounting hole, and the bottom of the vibration motor 2 is fixedly connected to the steering wheel through a fastener. A vibration motor 2 is arranged on each side of the steering wheel, which not only improves the redundancy and avoids the problem that a single vibration motor 2 cannot be prompted due to a fault, but also increases the vibration intensity without increasing the volume of a single vibration motor 2. When the driver is driving fatigued or distracted, the driver can directly feel the prompt signal with his hand. Compared with the visual and auditory prompting methods, the prompting effect is better and will not interfere with the driver's attention.

[0041] In this embodiment, the voltage control module 3 is composed of a polymer battery, a step-down module, a connecting line and an AWG wire.

[0042] The input positive electrode of the step-down module is connected to the positive electrode of the power source 4 via a connecting line, and the input negative electrode of the step-down module is connected to the negative electrode of the power source 4 via a connecting line.

[0043] The input positive pole of the MOSFET module in the control unit 5 is connected to the output positive pole of the buck module; the input negative pole of the MOSFET module is connected to the output negative pole of the buck module.

[0044] The positive electrode of the vibration motor 2 is connected to the positive output electrode of the MOSFET module, and the negative electrode of the vibration motor 2 is connected to the negative output electrode of the MOSFET module.

[0045] Specifically, the voltage control module 3 is mainly composed of a polymer battery, a step-down module, a connecting wire, and an AWG wire. First, the power supply 4 (battery or DC power supply 4) is connected to the step-down module. Specifically, the positive pole of the power supply 4 is connected to the input positive pole (VIN+) of the step-down module, and the negative pole is connected to the input negative pole (VIN-) of the step-down module to ensure that the power supply 4 can supply power stably, providing a basis for subsequent voltage regulation.

[0046] The output voltage is adjusted using the potentiometer on the step-down module. The output voltage is adjusted to the voltage required for the vibration motor 2 to meet the working requirements of the subsequent circuit. It should be noted that the output voltage needs to be accurately adjusted to within ±0.2V to avoid overvoltage damage to the vibration motor 2 and extend the life of the vibration motor 2.

[0047] The device connection of the voltage control module 3 is as follows: connect the buck module to the MOSFET (metal oxide semiconductor field effect transistor). Specifically, connect the output positive pole (VOUT+) of the buck module to the VIN+ terminal of the MOSFET module, and connect the output negative pole (VOUT-) to the VIN- terminal of the MOSFET module. Subsequently, connect the vibration motor 2. Connect the positive pole of the vibration motor 2 to the VOUT+ terminal of the MOSFET module, and connect the negative pole to the VOUT- terminal of the MOSFET module. Make sure that the MOSFET module can start and stop the vibration motor 2. Finally, connect the control signal. Connect the ground (GND) of the control circuit to the GND terminal of the MOSFET module, and connect the control pin (such as D9) of the development board to the TRIG / PWM terminal of the MOSFET module. In this way, when driving fatigue is detected, a control signal can be sent to the MOSFET module through the control pin, thereby realizing control of the entire circuit. The control unit 5 can receive fatigue prompt signals wirelessly and wiredly.

[0048] In this embodiment, the control unit 5 is composed of a MOSFET module and a development board control pin, and is driven by a Python control code. Specifically, through the Python control code, the control pin sends a control signal to the MOSFET module to achieve control of the entire circuit. The control unit 5 can receive fatigue prompt signals in wireless and wired ways. By real-time monitoring of the driver's fatigue state during driving, and when the driver is driving fatigued or distracted, a fatigue driving detection signal is received. According to the signal, the control unit 5 judges the degree of fatigue according to the detection signal, and sends different control signals to the prompt unit according to the different degrees of fatigue, so that the prompt unit sends a prompt signal that is positively correlated with the driver's fatigue level, that is, the higher the fatigue level, the higher the vibration intensity.

[0049] Specifically, the Python control code is as follows Figure 2 shown.

[0050] Embodiment 2

[0051] like Figure 3 As shown, this embodiment provides a method for prompting automobile driver fatigue based on tactile prompts, including:

[0052] Step 301: Acquire a detection signal of a fatigue driving detection system; the detection signal includes fatigue driving and non-fatigue driving.

[0053] Step 302 : When the detection signal is fatigue driving, the vibration motor 2 is driven based on the control unit 5 .

[0054] Step 303: Reacquire the detection signal of the fatigue driving detection system.

[0055] Step 304: When the detection signal is non-drowsy driving, end the reminder.

[0056] In summary, this application has the following technical effects:

[0057] 1) The automobile driver fatigue reminder device based on tactile reminder proposed in this application is intended to improve the reminder effect of the driver's fatigue state, thereby enhancing driving safety. Compared with the existing visual and auditory reminder methods, the vibration steering wheel reminder method adopted in this application has significant advantages: it will not interfere with the driver's attention, and the driver does not need to take his eyes off the road or divert his attention.

[0058] 2) The fatigue reminder device in this application reminds the driver by vibrating the steering wheel. This method is relatively simple to integrate and does not require large-scale adjustments to the car design. Furthermore, the vibrator has the advantages of fast startup speed, good vibration effect, and small size. It will not cause obvious protrusions on the steering wheel, making the steering wheel shape unrestricted and effectively preventing environmental factors from affecting its life.

[0059] 3) The control unit 5 in the present application can receive fatigue warning signals wirelessly and wiredly. In the warning unit of the present application, a buzzer and / or warning light in the car can also be set to provide auxiliary visual and sound prompts, thereby further enhancing the warning effect. By combining the fatigue monitoring device with multiple prompting methods of touch, vision and sound, it can issue warnings in time according to different fatigue levels, helping the driver avoid potential dangers and ensure driving safety.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A car driver fatigue prompting device based on tactile prompting, characterized in that: include: Steering wheel frame, control unit, vibration motor, power supply and voltage control module; A plurality of vibration motors are installed on the steering wheel frame; The voltage control module is used to adjust the voltage to a range where the vibration motor can work normally; The control unit is used to drive the vibration motor through Python control code, control pins and MOSFET control module when receiving a signal of fatigue driving detection; The vibration motor is used to remind the driver by vibrating the steering wheel when receiving a signal of fatigue driving detection.

2. The automobile driver fatigue prompting device based on tactile prompting according to claim 1 is characterized in that: The vibration motor adopts an AC linear vibration motor.

3. The automobile driver fatigue prompting device based on tactile prompting according to claim 1 is characterized in that: The vibration motor comprises a first vibration motor and a second vibration motor; the first vibration motor and the second vibration motor are respectively arranged at the three o'clock direction and the nine o'clock direction of the steering wheel frame.

4. The automobile driver fatigue prompting device based on tactile prompting according to claim 1 is characterized in that: The voltage control module is composed of a polymer battery, a step-down module, a connecting wire and an AWG wire; The input positive electrode of the step-down module is connected to the positive electrode of the power supply through a connecting line, and the input negative electrode of the step-down module is connected to the negative electrode of the power supply through a connecting line.

5. The automobile driver fatigue prompting device based on tactile prompting according to claim 4 is characterized in that: The input positive pole of the MOSFET module in the control unit is connected to the output positive pole of the buck module; the input negative pole of the MOSFET module is connected to the output negative pole of the buck module.

6. The automobile driver fatigue prompting device based on tactile prompting according to claim 5, characterized in that: The positive electrode of the vibration motor is connected to the positive output electrode of the MOSFET module, and the negative electrode of the vibration motor is connected to the negative output electrode of the MOSFET module.

7. The automobile driver fatigue prompting device based on tactile prompting according to claim 1 is characterized in that: The control unit receives the fatigue prompt signal by wireless or wired communication.

8. A method for reminding a driver of fatigue based on tactile prompts, characterized in that: include: Acquire a detection signal of a fatigue driving detection system; the detection signal includes fatigue driving and non-fatigue driving; When the detection signal is fatigue driving, the vibration motor is driven based on the control unit; Re-acquire the detection signal of the fatigue driving detection system; When the detection signal is non-drowsy driving, the reminder ends.

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