CN2731604Y

CN2731604Y - Electronic device for preventing dozing

Info

Publication number: CN2731604Y
Application number: CN 200420076555
Authority: CN
Inventors: 刘伦洪
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 2004-09-10
Filing date: 2004-09-10
Publication date: 2005-10-05
Anticipated expiration: 2014-09-10

Abstract

The utility model provides an electronic device for preventing dozing, which is composed of a motion sensor, an electrode and an electronic controller, wherein motion sensor and the electrode are arranged on a hand wheel and are connected with the electronic controller; in the state of nature, the motion sensor is positioned at the lower part of the hand wheel. The utility model adopts a mode of light-current pulse stimulation on hands; compared with other wakeup modes, (such as sound), the mode of the light-current pulse stimulation acting on hands can effectively wake dozing drivers up; the utility model has good adaptability to environment. The device which is arranged on the hand wheel does not need to be wore on heads; the device has the advantages of easy installation, low price and easy operation. In addition, the device can also have certain effects of massage and physical therapy by stimulating the specific vacant sites of hands.

Description

A kind of electronics Drowse-proof device

Technical field

The utility model relates to a kind of anti-sleepy electronic installation of driver that is installed on vehicle steering.

Background technology

When driving, doze off be many drive over a long distance and the fatigue driving process in the dangerous situation that often occurs, the researchist is doing many research work aspect the prevention driver doze both at home and abroad, and is also a lot of about the technology report of this respect and the patent of being correlated with.

Aspect the doze state of identification of driver, two classes method relatively more commonly used is arranged how:

A kind of method is that the method that adopts camera technique to follow the tracks of driver's eyeball is discerned doze state, as patent No. CN99108335.0 " method for detecting driver's eyes of dozing driving alarm system " and patent No. CN99108486.1 " the driver drowsy detection method of dozing driving alarm system ", very characteristic motion and closure can appear in eyeball when its foundation was driver drowsy, said method is then followed the tracks of and the eyes of monitoring the driver by the method for imaging and image recognition is uninterrupted, reaches the purpose of identification doze state.The major defect of these class methods has: the one, and device realizes that cost is higher, needs cover micro-processor controlled shooting, tracking and an image processing system; The 2nd, the reliability of software and hardware system is relatively poor, as relatively poor to the adaptability of the low light level/high light environment, high vibration, driver's individual difference or the like.

Another kind of method is to detect the method for driver's head position by the wear-type device, and it may nose drop when being driver drowsy, as patent No. CN95223333.9 " the sleepy alarming device of head-type ".Its shortcoming mainly contains two aspects: at first be that the head-type device may allow the driver uncomfortable; Secondly, it is not necessarily sagging to lean against on the seat driver's head when sleepy, and detection may be forbidden.

And to wake up effectively how aspect the driver in the drowsiness, many technology all adopt the hummer sounding to wake the driver up, and obviously the outer noise circumstance of Che Neiche can influence the validity of this method.

In a word, the driver anti-sleepy aspect, also do not improve at present and effective method.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, and a kind of electronics Drowse-proof device is provided, and this device reliability is strong, need not to wear, and is easy for installation, and easy to implement.

A kind of electronics Drowse-proof device that the utility model provides, it is characterized in that: this device is made up of motion sensor, electrode and electronic controller three parts, motion sensor and electrode are installed on the bearing circle, and link to each other with electronic controller, under state of nature, motion sensor is positioned at the bottom of bearing circle.

Above-mentioned electronic controller is made up of power regulator module, DC boosting module, doze state identification module, controlled concussion module, power on time delay module and output control module; It is the V DC voltage that power regulator module is used for vehicle-mounted V voltage transformation, the DC boosting module is used for the DC voltage of automobile-used V boost in voltage to ~ V, the doze state identification module is according to the signal identification of driver doze state of motion sensor, and control the work of controlled concussion module, controlled concussion module is exported by the control generation rectangle concussion waveform of doze state identification module, this rect.p. drives output control module, the time delay module that powers on is used for the initial stage in the electronic controller energising, produce the time delayed signal of setting, the output of output control module control electric pulse.

The utility model adopts the weak electric pulse stimulation mode of hand, facts have proved, the weak electric pulse stimulation that acts on hand wakes the more effectively driver in waking drowsiness up of mode (as sound) up than other, and better to the adaptability of environment.This device is installed on the bearing circle, need not to wear, and is easy for installation, and cheap, easy to implement.In addition, by the stimulation to the specific room of hand, this device can also have certain massage and physiotheraping effect.

Description of drawings

Fig. 1 forms and scheme of installation for the anti-sleepy electronic installation of bearing circle;

Fig. 2 is a bearing circle electronics Drowse-proof device schematic diagram;

Fig. 3 is bearing circle electronics Drowse-proof device controller circuitry figure.

Embodiment

As shown in Figure 1, this device is made up of motion sensor 3, electrode 2 and electronic controller 4 three parts.Motion sensor 3 and electrode 2 are installed on the bearing circle 1, and link to each other with electronic controller 4.Under state of nature, motion sensor 3 is positioned at the bottom of bearing circle.

Motion sensor 3 detects the position of bearing circle 1, and when the equilibrium position of the position deviation state of nature of bearing circle, motion sensor 3 sends signals to electronic controller 4;

Electrode 2 is used to wake up the driver.After detecting driver drowsy, the electrode 2 on the electronic controller 4 direction of passage dishes discharges low voltage electric impulse to driver's hand, and this electric pulse stimulation human biological electricity changes, thereby reaches the purpose of waking up.

Electronic controller 4 is cores of this device.The signal that it provides according to the motion sensor on the bearing circle 3 detects and the identification of driver doze state, and produces electric pulse as required and output to the electrode 2 that is fixed on the bearing circle.Its theoretical foundation is: the driver is clear-headed can be regular according to road conditions steering dish, and bearing circle can not be in static free state for a long time; In contrast, during driver drowsy, bearing circle can be in static free state the long period.

The schematic diagram of electronic controller 4 as shown in Figure 2.As can be seen from the figure form by power regulator module 5, DC boosting module 6, doze state identification module 7, controlled concussion module 8,6 parts such as time delay module 9 and output control module 10 that power on.

The effect of power regulator module 5 is the 5V DC voltage with vehicle-mounted 12V voltage transformation, uses for other parts.

The effect of DC boosting module 6 is the DC voltage with automobile-used 12V boost in voltage to 36 ~ 60V.

The effect of doze state identification module 7 is according to the signal identification of driver doze state of motion sensor 3, and controls the work of controlled concussion module 8.

Controlled concussion module 8 is subjected to the control of doze state identification module 7 to produce rectangle concussion waveform and exports this rect.p. driving output control module 10.

The time delay module 9 that powers on is used for producing the time delayed signal of setting (as 60 seconds) at the initial stage of electronic controller 4 energisings, and this signal is also controlled the work of controlled concussion module 8, and promptly in this signal valid period, controlled concussion module 8 is not worked.

The output of output control module 10 control electric pulses.

Said apparatus can also be on electronic controller 4 external loudspeaker, the sound arousal function is provided.

The circuit diagram of embodiment as shown in Figure 3.

In this example, motion sensor 3 is three contact mercury cut-offes of a horizontal positioned, as among Fig. 33, when bearing circle rotates, just mercury cut-off can connect, thereby the output movement signal.

The effect of power regulator module 5 is to provide stable 9V DC voltage for other parts of circuit.Form by resistance R 2, surge suppression device TVS1, capacitor C 1, C2 and voltage stabilizing chip U1.

The effect of DC boosting module 6 is the DC voltage with automobile-used 12V boost in voltage to 36 ~ 90V.Form the self-oscillation circuit by miniature transformer TRANS1, capacitor C 3, C4, C5, triode T1, commutation diode D1 is a half-wave rectification.

But doze state identification module 7 adopts a slice repeated trigger monostable circuit CD4098 (U2) and a slice CMOS door IC, and when mercury cut-off SW2 on/off, these two parts can continue to keep a temporary stable state.Hold time by regularly determining at element R3/C6, R4/C7.Form a logical operation circuit by NAND gate circuit U3 (model is CD4011), so that under the condition of setting, allow electric pulse output.

Controlled concussion module 8 is subjected to the control of doze state identification 7, and its output drives output control part 10.U4 is two 555 circuit of a slice, and model is NE556.One of them 555 forms controlled oscillating circuit with R11, R12, C9, C10, produces the rectangle gating pulse of certain frequency, is used to drive output control circuit.

The effect of time delay module 9 of powering on is to guarantee to make Drowse-proof device inoperative at the car engine initial stage.Form by another 555 circuit, form a monostable circuit with C12, C13, R14.When powering on, trigger a Q end output delay pulse (as 60 seconds) of 555 circuit by the negative pulse of C11, R13 generation.

Output control module 10 is formed the electric pulse control circuit by triode T3, T4, T5 and resistance R 8, R9, potentiometer RW1, the output of control high-voltage pulse.Wherein RW1 is used to regulate the intensity of electric pulse, to adapt to different characteristics of human body.

Claims

1, the anti-sleepy electronic installation of a kind of bearing circle, it is characterized in that: this device is made up of motion sensor (3), electrode (2) and electronic controller (4) three parts, motion sensor (3) and electrode (2) are installed on the bearing circle (1), and link to each other with electronic controller (4), under state of nature, motion sensor (3) is positioned at the bottom of bearing circle.

2, device according to claim 1 is characterized in that: described electronic controller (4) is made up of power regulator module (5), DC boosting module (6), doze state identification module (7), controlled concussion module (8), the time delay module that powers on (9) and output control module (10); It is the 5V DC voltage that power regulator module (5) is used for vehicle-mounted 12V voltage transformation, DC boosting module (6) is used for the DC voltage with automobile-used 12V boost in voltage to 36 ~ 60V, doze state identification module (7) is according to the signal identification of driver doze state of motion sensor (3), and control controlled concussion module (8) and work, controlled concussion module (8) is subjected to the control of doze state identification module (7) to produce the output of rectangle concussion waveform, this rect.p. drives output control module (10), the time delay module (9) that powers on is used for the initial stage in electronic controller (4) energising, produce the time delayed signal of setting, the output of output control module (10) control electric pulse.