CN101670831B - Vehicle driver anti-drowsy automatic emergency stop device - Google Patents
Vehicle driver anti-drowsy automatic emergency stop device Download PDFInfo
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- CN101670831B CN101670831B CN200910187620XA CN200910187620A CN101670831B CN 101670831 B CN101670831 B CN 101670831B CN 200910187620X A CN200910187620X A CN 200910187620XA CN 200910187620 A CN200910187620 A CN 200910187620A CN 101670831 B CN101670831 B CN 101670831B
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Abstract
The invention relates to a vehicle driver anti-drowsy automatic emergency stop device which comprises a video camera and an image processing single board computer, and has the technical key points that the video camera is arranged at the position corresponding to the eye part of the sight line in front of a driver inside a cab; a video image output end of the video camera is connected with the image processing single board computer, and an input end of the image processing single board computer is also respectively connected with an engine rotating speed signal output end and a running speed signal output end of a vehicle computer; an output end of the image processing single board computer is respectively connected with an accelerator controller, a braking controller, an alarm device andan input end of a dual flash relay. Once the driver has the drowsy dangerous situation when in driving, an execution driving controller can lead the driver to be converted into a safe state by the functions of audible alarm and controlling dual flash, brake force and an accelerator. The device has simple structure and reliable use, and can effectively prevent the driving accident caused by the driver who dozes off when in driving.
Description
Technical field
The present invention relates to a kind of automobile driver tired driving that prevents and guarantee the technical field of traffic safety, specifically a kind of vehicle driver anti-drowsy automatic emergency stop device.
Background technology
As everyone knows, when self-propelled vehicle travelled for a long time, fatigue doze appearred in driver easily, was easy to cause traffic accident, seriously influenced driver self and other people property and life security.
In recent years, in turnpike driving, because chaufeur knocks the major traffic accidents that cause of sleeping and rise at double, therefore, a large amount of development researches is all carried out in that vehicle-mounted prevention driver drives vehicle is knocked the device of sleeping in countries in the world.As discern E.E.G, judge sleep attitude, brain offset, the variation of hand grip, frequency of wink judgement etc.Judge the uncertain of driver drowsy state and do not have emergency shut down device because above-mentioned the whole bag of tricks all exists, so up to the present still there is not a kind of anti-safety device of sleeping of knocking of chaufeur that can have practical value and batch manufacturing installation.In sum, reduce personal injury for reducing train operation accident significantly, market in urgent need is a kind of can knock method of sleeping and the urgent automatic stopping device that prevents the driver drives vehicle drowsiness by the reliable recognition driver drives vehicle.
Summary of the invention
The purpose of this invention is to provide a kind of vehicle driver anti-drowsy automatic emergency stop device.To avoid chaufeur because of the sleepy train operation accident that is caused of driving a vehicle.
The object of the present invention is achieved like this: it includes pick up camera, the image processing single board computer, image pick-up card, the engine speed capture card, the road speed capture card, it is characterized in that: be provided with pick up camera with the corresponding position of sight line eye, chaufeur the place ahead in the operator's compartment, the video image mouth of this pick up camera is connected with the image processing single board computer, and the input end of this image processing single board computer also is connected with engine rotational speed signal, the road speed signal output part of vehicle-mounted computer respectively; The mouth of image processing single board computer is connected with accel control, brake controller, annunciator, two sudden strain of a muscle relay input end respectively by carrying out driving governor; Described brake controller is meant and is arranged in parallel a ratio brake valve according to speed of a motor vehicle adjusting braking strength on the footbrake loop.
Principle of work of the present invention is: the pick up camera of subsidiary infrared illumination is installed in the range of visibility of automobile driver the place ahead, in the vehicle ' daytime continuous acquisition visible light video image, night continuous acquisition near-infrared video image; Camera video output end of image and image acquisition card connection; Image pick-up card, engine speed capture card, road speed capture card are connected with the image recognition processing device respectively; Receive engine rotational speed signal behind the vehicle startup, system sends prompt tone requirement chaufeur to the self check of this device manual test; The self check success then enters mode of operation automatically.The image recognition processing device begins the chaufeur face image is carried out continuous detection and localization and signature analysis immediately after collecting the vehicle ' signal, if in the continuous time of system's initial setting, do not detect people's face pupil, show that then chaufeur does not have road surface, visual observation the place ahead, be to be in doze state, system directive this moment is carried out driving governor and is received throttle immediately; Send the sound and light alarm signal; Brake according to the road speed control ratio; Open emergent two the sudden strain of a muscle, behind the vehicle immobilization, system detects less than train signal, automatically terminates warning function and rearming.
Pick up camera of the present invention has automatic infrared illumination at night for the pick up camera of subsidiary infrared illumination, night continuous acquisition near-infrared video image, daytime the continuous acquisition visible light video image.
The input end of image recognition processing device of the present invention also connects a fault hard closing circuit that has a hard closing warning circuit.
The input end of image recognition processing device of the present invention also is connected with a manual self-checking circuit.
Image pick-up card of the present invention is that the analog video image signals that will gather is transformed into the data image signal that can supply system identification to handle.
Engine speed capture card of the present invention is connected on the on-board engine tachogen, for native system provides the vehicle operation state.
Road speed capture card of the present invention is connected on the vehicular speeds sensor, and the road speed signal of collection is judged sleepy for system and braking strength control provides foundation.
Accel control of the present invention is meant that Das Gaspedal is provided with one throttle is recovered to the urgent top of the post rod type breaking mechanism of engine idle state.
Image recognition processing device of the present invention comprises framing check and analysis arbitration functions, sets according to initial condition and can judge accurately whether chaufeur is sleepy; The image processing single board computer carries out eye pupil to the chaufeur face image of gathering in travelling and detects, and does not detect pupil if surpass setting-up time, promptly is judged to be to knock and sleeps.
In case the present invention has the precarious position that doze appears in chaufeur, described execution actuator then will be by audible alarm, control is two dodges, and the passing ratio brake valve controls braking strength and the urgent top of post rod type breaking mechanism and controls Das Gaspedal and make its throttle be recovered to the idling mode of driving engine, thereby changes safe condition into.The present invention is simple in structure, uses reliably, detects at any time, can effectively prevent because chaufeur is knocked the train operation accident that causes when sleeping.
Description of drawings
Fig. 1 is a structure flow process simplified schematic diagram of the present invention;
Fig. 2 is a fundamental diagram of the present invention;
Fig. 3 is a ratio brake valve structural representation sketch of the present invention;
Fig. 4 is an accel control structural representation sketch of the present invention.
Below in conjunction with accompanying drawing and by example the present invention is described in further detail, but following example only is a wherein example of the present invention, the rights protection scope of not representing the present invention and being limited, the scope of the present invention is as the criterion with claims.
The specific embodiment
Shown in Fig. 1 system construction drawing, application example of the present invention: (side mirror) installs the pick up camera of subsidiary automatic infrared illumination in the scope of automobile driver the place ahead sight line eye, in the vehicle ' daytime continuous acquisition visible light video image, night continuous acquisition near-infrared video image; The camera video output end of image is connected with image pick-up card (MV-AINI3.0); Image pick-up card (MV-AINI3.0) converts the video simulation picture signal to can be for the data image signal of processing and identification; Engine speed capture card (KPCI-812) is connected on the on-board engine tachogen, and engine rotational speed signal is the foundation of system identification vehicle operation state; (KPCI-812) is connected on the vehicular speeds sensor with the road speed capture card, and the road speed signal that provides is the foundation that driver drowsy and braking strength control are judged by system.With image pick-up card, engine speed capture card, road speed capture card are connected respectively to image recognition processing device (SBC9261-I embedded board computing machine) input end, and image recognition processing device mouth is connected to MC-21812 and carries out driver input end; MC-21812 carries out actuator and exports audible alarm respectively, two sudden strains of a muscle contact, control ratio brake valve and accel control.
Shown in the described fundamental diagram of Fig. 2, after chaufeur is opened the engine key switch, system power supply is connected and is entered readiness for action, when vehicle startup success rear engine rotating speed capture card collects engine rotational speed signal, system sends suggestion voice requirement chaufeur to the self check of this device manual test; At this moment chaufeur need be pressed the manual test switch and closed one's eyes for 1 second, and system works is just often whenever closed one's eyes and will be sent 1 subnormal prompt tone 1 second, unclamps the test switch system and enters mode of operation automatically.If system has fault can send the fault prompt tone, for not influencing normal driving, need artificial hard closing system, after the hard closing system, every interval certain hour can send system and close prompting, requires maintenance as early as possible.The proof vehicle is kept in motion after the road speed capture card collects the vehicle driving speed signal, the image recognition processing device begin immediately to the image that converts digital signal to carry out chaufeur on the face eye carry out recognition and tracking, face tracking location back system can analyze the face feature continuous detecting, judge the pupil state of eye, if in the time of system's initial setting, do not detect people's face pupil, do not have road surface, visual observation the place ahead in then showing between chaufeur at this moment, be in doze state; Judge that sleepy basis of design is: 1. unique sign of driver drowsy is close one's eyes (detecting less than pupil); 2. vehicle is in motoring condition; 3. compole was short when the people blinked when non-sleep state, even if also can not influence the observation of road surface, the place ahead continuously nictation; 4. the per second operating range is 33.33 meters when 16.67 meters of per second operating ranges during 60 kilometers of the speed of a motor vehicle, 120 kilometers of the speed of a motor vehicle, if road surface, the place ahead disappears in the visual field and surpasses more than 1 second then have an accident probably; Therefore, the system initial setting detects the time less than pupil: during 60 kilometers of the speed of a motor vehicle is 〉=2 seconds, is 〉=1 second during 120 kilometers of the speed of a motor vehicle, reaches and surpass critical value to be sleepy K=60T 〉=2S=120T 〉=1S; When being judged to be doze state, the instruction of system outlet sudden stop, driving governor is controlled accel control immediately throttle is received minimum; Send the sound and light alarm signal to chaufeur; Control braking strength in proportion according to road speed; Connect emergent two flashing light, system detects less than the road speed signal behind vehicle immobilization, can automatically terminate warning function and rearming.
The working process summary
After execution driving governor input end is received the instruction of (SBC9261-I embedded board computing machine) brake signal, export four kinds immediately and carry out action, first kind is that relay contact is connected the audible alarm power supply, second kind is that relay contact is connected two lightning sources, the third is that relay contact is connected the accel control power supply, the 4th kind is according to road speed, by the requirement of embedded board computing machine, and the braking strength of the current control ratio brake valve of output varying strength.As shown in Figure 4, Throttle Opening Control implement body working process:
Accel control 7 is installed near the Das Gaspedal 6, and when normal driving states, accel control push rod 8 is in collapsed state, and Das Gaspedal 6 is not interfered, and can step on earth; After receiving the brake instruction, to carry out the relay contact of driving governor and connect the accel control power supply, push rod 8 is powerful rapidly to be ejected, and the throttle minimum position is got back on Das Gaspedal 6 tops, finishes and receives the throttle action.After the brake instruction was removed, carried out the relay contact power cut-off of driving governor, accel control push rod 8 returned to collapsed state.In addition, 9 among the figure is power lead.As shown in Figure 3, the concrete working process of ratio brake valve:
Claims (4)
1. vehicle driver anti-drowsy automatic emergency stop device, it includes pick up camera, the image processing single board computer, image pick-up card, the engine speed capture card, the road speed capture card, it is characterized in that: be provided with pick up camera with the corresponding position of sight line eye, chaufeur the place ahead in the operator's compartment, the video image mouth of this pick up camera is connected with the image processing single board computer, and the input end of this image processing single board computer also is connected with engine rotational speed signal, the road speed signal output part of vehicle-mounted computer respectively; The mouth of image processing single board computer is connected with accel control, brake controller, annunciator, two sudden strain of a muscle relay input end respectively by carrying out driving governor; Described brake controller is meant and is arranged in parallel a ratio brake valve according to speed of a motor vehicle adjusting braking strength on the footbrake loop.
2. vehicle driver anti-drowsy automatic emergency stop device according to claim 1 is characterized in that: described accel control is meant that Das Gaspedal is provided with one throttle is recovered to the urgent top of the post rod type breaking mechanism of engine idle state.
3. vehicle driver anti-drowsy automatic emergency stop device according to claim 1 is characterized in that: image processing single board computer input end also connects a fault hard closing circuit that has a hard closing voice suggestion.
4. vehicle driver anti-drowsy automatic emergency stop device according to claim 1 is characterized in that: image processing single board computer input end also is connected with a manual self-checking circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187620XA CN101670831B (en) | 2009-09-25 | 2009-09-25 | Vehicle driver anti-drowsy automatic emergency stop device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910187620XA CN101670831B (en) | 2009-09-25 | 2009-09-25 | Vehicle driver anti-drowsy automatic emergency stop device |
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| CN101670831A CN101670831A (en) | 2010-03-17 |
| CN101670831B true CN101670831B (en) | 2011-08-03 |
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| CN200910187620XA Expired - Fee Related CN101670831B (en) | 2009-09-25 | 2009-09-25 | Vehicle driver anti-drowsy automatic emergency stop device |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086241B4 (en) * | 2011-11-14 | 2018-04-05 | Robert Bosch Gmbh | Method for the safe parking of a vehicle |
| CN102501764A (en) * | 2011-12-29 | 2012-06-20 | 华南理工大学 | System with forced reduction gear for preventing fatigue driving on highway |
| CN103713727B (en) * | 2013-12-17 | 2019-01-04 | 国核自仪系统工程有限公司 | Dynamic man-machine interface system and its man-machine communication's method based on facial characteristics identification |
| CN103747313A (en) * | 2013-12-30 | 2014-04-23 | 镇江市高等专科学校 | Smart television remote control and remote control method |
| JP6228581B2 (en) * | 2015-10-21 | 2017-11-08 | 本田技研工業株式会社 | Stop control device |
| CN107280647A (en) * | 2016-03-31 | 2017-10-24 | 宇龙计算机通信科技(深圳)有限公司 | Prevent equipment misoperation method, apparatus and system |
| CN107284237A (en) * | 2016-03-31 | 2017-10-24 | 宇龙计算机通信科技(深圳)有限公司 | A kind of control method for vehicle and system |
| CN106938647B (en) * | 2017-04-11 | 2019-05-31 | 北京汽车研究总院有限公司 | A kind of engine control system and method |
| CN106976460A (en) * | 2017-05-18 | 2017-07-25 | 益阳市首航电子科技有限公司 | Safe driving of vehicle TT＆C system |
| CN108323164A (en) * | 2017-06-26 | 2018-07-24 | 贺鹏麟 | Method, system and the motor vehicle for preventing driver's doze for motor vehicle |
| CN109522820A (en) * | 2018-10-29 | 2019-03-26 | 江西科技学院 | A kind of fatigue monitoring method, system, readable storage medium storing program for executing and mobile terminal |
| CN113548003A (en) * | 2021-08-27 | 2021-10-26 | 温桂体 | Novel vehicle driving safety instrument |
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- 2009-09-25 CN CN200910187620XA patent/CN101670831B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN1613425A (en) * | 2004-09-15 | 2005-05-11 | 南京大学 | Method and system for drivers' fatigue prealarming biological identification |
| CN2853529Y (en) * | 2005-06-19 | 2007-01-03 | 刘祥金 | Automatic brake device for driver faigue driving |
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