Driver fatigue warning system

Abstract

The utility model discloses a driver fatigue warning system which comprises an identification module and a warning module, and the identification module is used for collecting physiological state information of a driver and generating a control signal according to the physiological state information; the warning module comprises an electrode device, and the electrode device is electrically connected with the identification module and used for receiving the control signal issued by the identification module and generating current according to the control signal so as to stimulate the human body. The driver fatigue warning system has the advantages that the identification module can generate a control signal according to physiological state information, the electrode device can receive the control signal sent by the identification module and generate current according to the control signal, the current can stimulate a human body and make the human body have a pricking feeling, and the pricking feeling can play a warning role on a driver. The mode that the electrode device generates current is adopted to stimulate the pain feeling on the body of the driver, and the warning effect on the driver is improved.

Description

Technical Field

[0001] This utility model relates to the field of driving safety technology, and in particular to a driver fatigue warning system. Background Technology

[0002] With the widespread use of transportation, traffic accidents caused by driver fatigue are increasingly common. Statistics show that fatigue accounts for over 30% of all traffic accidents, seriously endangering drivers' lives. Therefore, determining whether a driver is fatigued and issuing warnings to drivers in this state is of paramount importance.

[0003] Existing driver fatigue warning systems (such as the driver fatigue driving prevention and early warning device disclosed in application number 202121796031.4) broadcast the driver's driving time through a voice broadcast module and remind the driver to rest to prevent driver fatigue driving. When the system detects that the driver is in a state of fatigue driving, it plays music to refresh the driver. However, both voice prompts and music playback are auditory stimuli. If the driver is too tired, their hearing ability is reduced, and they are less effective in perceiving such auditory stimuli, resulting in a very small warning effect. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a driver fatigue warning system to solve the technical problem that in the prior art, when the driver is in a state of fatigued driving, only voice prompts and music are used to stimulate the driver's auditory senses, and the warning effect is minimal.

[0005] To achieve the above technical objectives, the present invention provides a driver fatigue warning system, comprising:

[0006] The identification module is used to collect the driver's physiological state information and generate control signals based on the physiological state information;

[0007] The warning module includes an electrode that is electrically connected to the identification module. The electrode is used to receive the control signal sent by the identification module and generate an electric current according to the control signal to stimulate the human body.

[0008] Furthermore, the warning module also includes a first vibrator, which is disposed on the car steering wheel and electrically connected to the identification module, for receiving the control signal sent by the identification module and generating vibration according to the control signal.

[0009] Furthermore, the warning module also includes a second vibrator, which is disposed on the driver's seat of the vehicle and electrically connected to the identification module, for receiving the control signal issued by the identification module and generating vibration according to the control signal.

[0010] Furthermore, the warning module also includes a tensioner, which is connected to the seat belt on the driver's seat and electrically connected to the identification module, for receiving the control signal sent by the identification module and tightening the seat belt according to the control signal.

[0011] Furthermore, the driver fatigue warning system also includes a communication module, which can transmit the control signal issued by the identification module to the electrode, the first vibrator, the second vibrator and the tensioner via the Zigbee protocol.

[0012] Furthermore, the communication module uses the CC2530 chip.

[0013] Furthermore, the identification module includes a data collector and a host computer. The data collector is used to collect the driver's physiological state information, and the host computer is electrically connected to the data collector to generate the control signal based on the physiological state information.

[0014] Furthermore, the data collector includes a camera and a wristband. The camera is installed in the driver's cab to collect the driver's facial information, and the wristband is worn on the driver's wrist. The sensors on the wristband are used to collect the driver's physiological status information such as blood pressure, heart rate, and blood oxygen.

[0015] Furthermore, the electrodes are fitted into the skin of the wrist.

[0016] Furthermore, the electrodes are attached to the skin of the wrist via the bracelet.

[0017] Compared with existing technologies, the beneficial effects of this utility model include: during the driver's driving process, the physiological state information of the driver is collected by the identification module. The identification module is equipped with a driving state judgment table, which compares the physiological state information with preset values. When the physiological state information is less than the preset value, it indicates that the driver's driving state is normal. When the physiological state information is greater than the preset value, it indicates that the driver's driving state is fatigued. When the driver's driving state is fatigued, the identification module generates a control signal based on the physiological state information. The electrode receives the control signal issued by the identification module and generates current according to the control signal. The current can stimulate the human body, causing a stinging sensation. The stinging sensation can serve as a warning to the driver. This driver fatigue warning system uses the method of generating current by the electrode to stimulate the driver's body with pain sensation, thereby improving the warning effect on the driver. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a driver fatigue warning system provided by this utility model;

[0019] In the diagram: 100 - Identification module, 110 - Data collector, 111 - Camera, 112 - Wristband, 120 - Host computer, 200 - Warning module, 210 - Electrode, 220 - First vibrator, 230 - Second vibrator, 240 - Tightener, 300 - Communication module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] This utility model provides a driver fatigue warning system, the structure of which is as follows: Figure 1 As shown, it includes an identification module 100 and a warning module 200. The identification module 100 is used to collect the driver's physiological state information and generate a control signal based on the physiological state information. The warning module 200 includes an electrode 210, which is electrically connected to the identification module 100 and is used to receive the control signal sent by the identification module 100 and generate an electric current based on the control signal to stimulate the human body.

[0022] During vehicle operation, the identification module 100 collects the driver's physiological state information. The identification module 100 contains a driving state judgment table, which compares the physiological state information with preset values. When the physiological state information is less than the preset value, the driver's driving state is normal; when the physiological state information is greater than the preset value, the driver's driving state is fatigued. When the driver is fatigued, the identification module 100 generates a control signal based on the physiological state information. The electrode 210 receives the control signal from the identification module 100 and generates an electric current based on the control signal. This electric current can stimulate the human body, causing a stinging sensation, which serves as a warning to the driver. This driver fatigue warning system uses the electric current generated by the electrode 210 to provide physical pain stimulation to the driver, thus improving the warning effect.

[0023] As a preferred embodiment, please refer to Figure 1 The warning module 200 further includes a first vibrator 220, which is mounted on the steering wheel of the vehicle and electrically connected to the identification module 100. The first vibrator 220 receives the control signal issued by the identification module 100 and generates vibration according to the control signal. The identification module 100 collects the driver's physiological state information. The identification module 100 contains a driving state judgment table, which compares the physiological state information with preset values. When the physiological state information is less than the preset value, it indicates that the driver's driving state is normal; when the physiological state information is greater than the preset value, it indicates that the driver's driving state is fatigued. When the driver is fatigued, the identification module 100 generates the control signal based on the physiological state information. The first vibrator 220 receives the control signal issued by the identification module 100 and generates vibration according to the control signal. The vibration is transmitted to the human body, achieving the purpose of warning the driver and further improving the warning effect on the driver.

[0024] As a preferred embodiment, please refer to Figure 1The warning module 200 further includes a second vibrator 230, which is installed on the driver's seat and electrically connected to the identification module 100. The second vibrator 230 receives the control signal from the identification module 100 and generates vibration based on the control signal. The identification module 100 collects the driver's physiological state information. The identification module 100 contains a driving state judgment table, which compares the physiological state information with preset values. When the physiological state information is less than the preset value, it indicates that the driver's driving state is normal; when the physiological state information is greater than the preset value, it indicates that the driver's driving state is fatigued. When the driver is fatigued, the identification module 100 generates the control signal based on the physiological state information. The second vibrator 230 receives the control signal from the identification module 100 and generates vibration based on the control signal. The vibration is transmitted to the human body, achieving the purpose of warning the driver and further improving the warning effect.

[0025] As a preferred embodiment, please refer to Figure 1 The warning module 200 also includes a tensioner 240, which is connected to the seat belt on the driver's seat and electrically connected to the identification module 100. The tensioner 240 receives the control signal from the identification module 100 and tightens the seat belt according to the control signal. The identification module 100 collects the driver's physiological state information and includes a driving state judgment table. This table compares the physiological state information with preset values. When the physiological state information is less than the preset value, it indicates the driver's driving state is normal; when it is greater than the preset value, it indicates the driver's driving state is fatigued. When the driver is fatigued, the identification module 100 generates the control signal based on the physiological state information. The tensioner 240 receives the control signal from the identification module 100 and tightens the seat belt accordingly. The tightened seat belt exerts a clamping force on the driver, achieving the purpose of warning the driver and further improving the warning effect.

[0026] As a preferred embodiment, please refer to Figure 1 The driver fatigue warning system further includes a communication module 300. The communication module 300 can transmit the control signal issued by the identification module 100 to the electrode 210, the first vibrator 220, the second vibrator 230 and the tensioner 240 via the Zigbee protocol. The communication module 300 is connected to the serial port on the identification module 100.

[0027] In a preferred embodiment, the communication module 300 uses a CC2530 chip. The CC2530 chip can be configured as a coordinator or a terminal device via software. All information sent by the terminal devices will eventually converge to the coordinator. The coordinator can also send messages to all terminal devices. When a Zigbee terminal device receives an action command, it sends the command through the I / O port of the CC2530 chip and drives the motors on the first vibrator 220, the second vibrator 230, and the tensioner 240 via a driver. When a Zigbee terminal device receives an action command, it sends the command through the I / O port of the CC2530 chip to drive a 555 timer to generate a 1.44kHz square wave signal. The square wave signal drives a 2N3904 transistor to generate a 2mA current with a frequency of 1.44kHz.

[0028] As a preferred embodiment, please refer to Figure 1 The identification module 100 includes a collector 110 and a host computer 120. The collector 110 is used to collect the driver's physiological state information. The host computer 120 is electrically connected to the collector 110 and is used to generate the control signal based on the physiological state information. The collector 110 collects the driver's physiological state information. The host computer 120 has a driving state judgment table. The driving state judgment table can compare the physiological state information with preset values. The generation of the control signal does not involve a calculation process. When the physiological state information is less than the preset value, it indicates that the driver's driving state is normal. When the physiological state information is greater than the preset value, it indicates that the driver's driving state is fatigued. When the driver's driving state is fatigued, the host computer 120 will generate the control signal. This driver fatigue warning system can identify the driver's current driving state by collecting and analyzing the driver's physiological state information.

[0029] As a preferred embodiment, please refer to Figure 1 The data collector 110 includes a camera 111 and a wristband 112. The camera 111 is installed in the driver's cab to collect the driver's facial information. The wristband 112 is worn on the driver's wrist. The sensors on the wristband 112 are used to collect the driver's blood pressure, heart rate, and blood oxygen saturation information. The camera 111 takes a picture of the driver to collect the driver's facial information, and the sensors on the wristband 112 collect the driver's blood pressure, heart rate, and blood oxygen saturation information.

[0030] In a preferred embodiment, the electrode 210 is attached to the skin of the wrist. Since the skin on the wrist is relatively sensitive, the effect of current stimulation can be improved by applying electrical stimulation to the skin of the wrist through the electrode 210.

[0031] In a preferred embodiment, the electrode 210 is attached to the skin of the wrist via the wristband 112. When the wristband 112 is tightly worn on the driver's wrist, the electrode 210 can be attached to the skin of the wrist.

[0032] To better understand this utility model, the following is combined with... Figure 1 The working principle of the technical solution of this utility model will be described in detail below:

[0033] During vehicle operation, the driver's face is captured by the camera 111, and physiological information such as blood pressure, heart rate, and blood oxygen saturation is collected by sensors on the wristband 112. The host computer 120 contains a driving state judgment table, which compares the physiological state information with preset values. When the physiological state information is less than the preset value, the driver's driving state is normal; when the physiological state information is greater than the preset value, the driver's driving state is fatigued. When the driver is fatigued, the host computer 120 generates a control signal, which is received by the electrode 210, which then generates a current. The electric current can stimulate the human body, causing a stinging sensation, which can serve as a warning to the driver. The first vibrator 220 receives the control signal and generates vibration according to the control signal. The vibration is transmitted to the human body to achieve the purpose of warning the driver. The second vibrator 230 receives the control signal and generates vibration according to the control signal. The vibration is transmitted to the human body to achieve the purpose of warning the driver. The tensioner 240 receives the control signal and tightens the seat belt according to the control signal. The tightened seat belt will exert a clamping force on the human body to achieve the purpose of warning the driver. This driver fatigue warning system uses the current generated by the electrode 210 to stimulate the driver's body with a pain sensation, which improves the warning effect on the driver.

[0034] The driver fatigue warning system provided by this utility model has the following beneficial effects:

[0035] (1) The host computer 120 is equipped with a driving state judgment table. The physiological state information can be compared with the preset value through the driving state judgment table. When the physiological state information is less than the preset value, it indicates that the driver's driving state is normal. When the physiological state information is greater than the preset value, it indicates that the driver's driving state is fatigued.

[0036] (2) When the driver is fatigued, the host computer 120 will generate the control signal, the first vibrator 220 will receive the control signal and generate vibration according to the control signal, the vibration will be transmitted to the human body to achieve the purpose of warning the driver, the second vibrator 230 will receive the control signal and generate vibration according to the control signal, the vibration will be transmitted to the human body to achieve the purpose of warning the driver, further improving the warning effect on the driver;

[0037] (3) This driver fatigue warning system uses the electrode 210 to generate current to stimulate the driver's body to feel pain, which improves the warning effect on the driver.

[0038] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A driver fatigue warning system characterised by, include: The identification module is used to collect the driver's physiological state information and generate control signals based on the physiological state information. The identification module includes a collector and a host computer. The collector is used to collect the driver's physiological state information. The host computer is electrically connected to the collector and is used to generate the control signals based on the physiological state information. The collector includes a camera and a wristband. The camera is set in the driver's cab to collect the driver's facial information. The wristband is worn on the driver's wrist. The sensors on the wristband are used to collect the driver's blood pressure, heart rate, and blood oxygen physiological state information. The warning module includes electrodes, a first vibrator, a second vibrator, and a tightener. The electrodes are electrically connected to the identification module and are used to receive control signals from the identification module and generate current according to the control signals to stimulate the human body. The electrodes are in contact with the skin of the wrist via a wristband. The first vibrator is mounted on the car steering wheel and electrically connected to the identification module, and is used to receive control signals from the identification module and generate vibration according to the control signals. The second vibrator is mounted on the car driver's seat and electrically connected to the identification module, and is used to receive control signals from the identification module and generate vibration according to the control signals. The tightener is connected to the seat belt on the driver's seat and is also electrically connected to the identification module, and is used to receive control signals from the identification module and tighten the seat belt according to the control signals.

2. The driver fatigue warning system of claim 1, wherein It also includes a communication module, which can transmit the control signals issued by the identification module to the electrode, the first vibrator, the second vibrator and the tightener via the Zigbee protocol.

3. The driver fatigue warning system of claim 2, wherein The communication module uses the CC2530 chip.

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