CN102529832A - Real-time caution system of vehicle wind retaining glass and execution method thereof - Google Patents
Real-time caution system of vehicle wind retaining glass and execution method thereof Download PDFInfo
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- CN102529832A CN102529832A CN2011100003769A CN201110000376A CN102529832A CN 102529832 A CN102529832 A CN 102529832A CN 2011100003769 A CN2011100003769 A CN 2011100003769A CN 201110000376 A CN201110000376 A CN 201110000376A CN 102529832 A CN102529832 A CN 102529832A
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Abstract
The invention provides a real-time caution system of vehicle wind retaining glass and an execution method thereof. The real-time caution system comprises an image capture unit, an image processing unit, a calculation and control unit and a light projection unit. The image capture unit is used for continuously shooting images in front of a vehicle, the image processing unit is used for judging barriers and positions of the barriers according to the images in front of the vehicle, and the calculation and control unit is used for calculating an intersection point of a connecting straight line and the vehicle wind retaining glass according to the connecting straight line between a driver and the barriers. The light projection unit produces a caution symbol on the wind retaining glass under control of the calculation and control unit to enable the driver to easily see the barriers in the straight back by aids of the caution symbol.
Description
Technical field
The present invention relates to a kind of caution system, particularly with a kind of vehicle windscreen on real-time caution system and manner of execution thereof relevant.
Background technology
Automobile has become one of walking-replacing tool that the modern uses always, however vehicle drive usually because sight line is not good or wholwe-hearted inadequately, pedestrian, animal, other vehicle or the like appear at the obstacle of vehicle front suddenly and for example knock, and cause the generation of contingency.
For reducing the above-mentioned unexpected probability that takes place; The existing on the market at present pedestrian's caution system that is used in intelligent vehicle; Its utilization is installed in the video camera of vehicle front and takes the place ahead image; And going out and be shown on the monitoring device in the car through occurring or get into obstacle frame in the track after the image processing, the person carefully drives to remind the vehicle drive by this, in order to avoid knock the pedestrian.
Generally speaking; This monitoring device is to be arranged near the interior instrument carrier panel of car; Its position is lower than vehicle drive person's eyes; Therefore the vehicle drive person must the labour contractor when watching monitoring device lowly can see the position of monitoring device to eyes, yet the vehicle drive labour contractor lowly watches this action of monitoring device, often belongs to the action of danger because noting the place ahead situation.Vehicle drive person eyes sight line can increase the danger when driving especially if must watch back and forth in vehicle front and monitoring device simultaneously.
Therefore, need the shortcoming of pedestrian's caution system of above-mentioned convention intelligent vehicle be proposed a solution at present.
Summary of the invention
Because the problem of above-mentioned prior art, the present invention's purpose is in the real-time caution system and the manner of execution thereof that provide on a kind of vehicle windscreen, and it can be immediately and presents one easily and warn symbol and remind the danger in the place ahead.
Real-time caution system on the vehicle windscreen according to the present invention comprises an image capturing unit, an image process unit, a calculating and control unit and a smooth projecting unit.This image capturing unit is in order to take the image of this vehicle front continuously.This image process unit is electrically connected to this image capturing unit, to judge an obstacle and position thereof according to the image of this vehicle front.This calculating and control unit are electrically connected to this image process unit, to connect straight line according to one between driver's head position and this obstacle, calculate one of this connection straight line and this Windshield intersection point.This light projecting unit is electrically connected to this calculating and control unit; This light projecting unit is under the control of this calculating and control unit; On this Windshield, produce a caution symbol, so that the driver can warned symbol and see this obstacle that is positioned at its rear easily by this.
The manner of execution of the real-time caution system on the vehicle windscreen according to the present invention, this manner of execution comprises:
Take the image of this vehicle front continuously with an image capturing unit;
Judge an obstacle and position thereof according to the image of this vehicle front;
Connect straight line according to one between driver's head position and this obstacle, calculate one of the Windshield intersection point of this connection straight line and this vehicle; And
Producing a caution symbol on this intersection point on this Windshield with a smooth projecting unit.
Real-time caution system and manner of execution thereof on the present invention's the vehicle windscreen; Can make the driver directly see that from Windshield being positioned at this caution symbol rear possibly cause dangerous obstacle; And then reduce the real-time caution system of convention and bowing when watching monitoring device, contingent accident is with dangerous.
Description of drawings
Fig. 1 is the scheme drawing according to the real-time caution system on the vehicle windscreen of first embodiment of the invention.
Fig. 2 is the scheme drawing according to the real-time caution system on the vehicle windscreen of second embodiment of the invention.
Fig. 3 is projeced into the scheme drawing on this Windshield for this caution symbol.
Fig. 4 is the manner of execution diagram of circuit of the real-time caution system on the vehicle windscreen according to the present invention.
The specific embodiment
See also Fig. 1, be scheme drawing according to the real-time caution system on the vehicle windscreen of first embodiment of the invention.This real-time caution system comprises that an image capturing unit 14, an image process unit 16, calculate and a control unit 18 and a smooth projecting unit 20.
In present embodiment, this image capturing unit 14 is arranged at the outside of a vehicle 10, and it is in order to take the image in these vehicle 10 the place aheads.In other embodiment, this image capturing unit 14 can be arranged at the inside of this vehicle 10, as long as it can take the image in these vehicle 10 the place aheads.This image capturing unit 14 can for for example be a Charged Coupled Device (charge coupled device, CCD) or a complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS) inductor.
This image process unit 16 is electrically connected to this image capturing unit 14, and it is analyzed and handle to these image capturing unit 14 captured images.This calculating and control unit 18 are electrically connected to this image process unit 16.This light projecting unit 20 is electrically connected to this calculating and control unit 18, and its set position is also unrestricted, is to be positioned at can light be projected to the position on this Windshield 12 as long as make it.
When this real-time caution system comes into operation, at first be the image of catching these vehicle 10 the place aheads by this image capturing unit 14 continuously, and send the image that is captured to this image process unit 16.Received image can analyzed and handle to this image process unit 16, so judge these vehicle 10 the place aheads whether have an obstacle 22 and the position.In present embodiment, this obstacle 22 is to represent with a group traveling together, yet it is not limited thereto; It can be other moving target; Vehicle during for example other is advanced, animal or the like perhaps also can be static targets, for example on the way bicycle or lie in pedestrian on the ground.When this image process unit 16 judges that there is this obstacle 22 in these vehicle 10 the place aheads; Will calculate the position of this obstacle 22 simultaneously; And then make that this calculating and control unit 18 are able to connect straight line 26 according to one between a driver 24 head positions and this obstacle 22; Calculate this connection straight line 26 and one of this Windshield 12 intersection point 28; And control this light projecting unit 20 and make it on this Windshield 12, produce a caution symbol 30, and make this driver 24 can be directly this caution symbol 30 from this Windshield 12 see that obstacle 22 is with real-time strick precaution danger.
Because image when these 14 these vehicle 10 the place aheads of acquisition, image capturing unit; And pass to this image process unit 16 to carry out the analysis of this obstacle 22; And after confirming that this obstacle 22 is arranged again with the location transmission of this obstacle 22 during to this calculating and control unit 18, these two stages need spend a bit of time.In addition; Calculating this obstacle 22 this intersection point 28 that should be connected straight line 26 and this Windshield 12 in this calculating and control unit 18 with this driver 24; And when controlling light projecting unit 20 immediately and on this intersection point 28, producing this caution symbol 30, these two stages also need spend a bit of time.Therefore; If this obstacle 22 is static, and this vehicle 10 also is static, and the position of this intersection point 28 will can not changed in time; So this caution symbol 30 that on this intersection point 28, produces only is to delay a bit of time appearance, and can the impact position correctness.If but this obstacle 22 is on, or this vehicle 10 be advance between, this caution symbol 30 that then on this intersection point 28, produces not only can be delayed appearance, more can appear at the off-square place.Therefore in a preferred embodiment; This calculating and control unit 18 can be according to the moving direction and the speed of this obstacle 22; With the working direction and the speed of this vehicle 10, calculate the position of estimating of estimating position and a driver 24 heads through the obstacle after the dead time 22, calculate again through after this dead time; These both intersection point 28 that should connect straight line 26 and this Windshield 12, and control this light projecting unit and on this intersection point 28, produce this caution symbol 30.
In some cases; This image process unit 16 can judge that this obstacle 22 that these vehicle 10 the place aheads are had may not be certain dangerous; For instance, this image process unit 16 judges that there is obstacle 22 in these vehicle 10 the place aheads, and this vehicle 10 is during gradually away from (for example turning) this obstacle 22; This calculating this moment and control unit 18 still can calculate this intersection point 28; But owing to away from this obstacle 22, therefore just can not control this light projecting unit 20, on this Windshield 12, producing should caution symbol 30.Perhaps; This image process unit 16 is judging that there is obstacle 22 in these vehicle 10 the place aheads; And this obstacle 22 is during gradually away from (for example turn) this vehicle 10; This calculating this moment and control unit 18 still can calculate this intersection point 28, on this Windshield 12, do not produce this caution symbol 30 but can not control this light projecting unit 20.
This calculating and control unit 18 can be done the control of a plurality of degree of freedom to this light projecting unit 20; That is this light projecting unit 20 is under the control of this control unit 18; Can do the motion of a plurality of degree of freedom, and make this light projecting unit 20 can on any position on this Windshield 12, produce this caution symbol 30.The mode that this caution symbol 30 produces can for example be that a laser aperture is projected on this Windshield 12, and is dangerous in these vehicle 10 the place aheads to remind this driver 24.Other light source that is suitable for being reflected on the glass for vehicle window can certainly be used.In a preferred embodiment, this caution symbol 30 is to result from this intersection point 28, watches this obstacle 22 so that this driver's 24 sight line can directly see through this caution symbol 30.Again; This calculating and control unit 18 can be according to different dangerous situations; And then control for example is this light projecting unit 20 of a laser light projector, projects the light of different colours, brightness, for example 10 meters of this vehicle 10 and this obstacle 22 distances with interior be the situation that belongs to the most dangerous; This calculating and control unit 18 promptly can be controlled this light projecting unit 20 and project red light, should driving must note and avoid dangerous immediately to remind.
What further specify is, this calculating and control unit 18 need know earlier that these driver's 24 head positions can learn that just this is online 26, and further calculate this intersection point 28.Learn the method for this driver's 24 head position; Comprise in advance information with driver's 24 head positions; Be stored in this calculating and control unit 18 or the internal memory (not shown); When this image process unit 16 judges that there is obstacle 22 in these vehicle 10 the place aheads, just can directly try to achieve online 26 between these driver's 24 head positions and this obstacle 22, further calculate this intersection point 28 again.This one store driver's 24 head positions in advance information, being fit to be applied to this vehicle 10 is by under the situation that fixedly driver 24 drives.In general, driver's 24 head positions are the place ahead at driver 24 chair back head rest place approximately slightly, thereby can adopt statistical to count the information of majority driver 24 head positions, and is stored in the internal memory (not shown).In addition, during as if adjustment driver seat, its relevant adjustment information can also be transferred into this calculating and control unit 18, so that this calculating and control unit 18 can upgrade the information of driver's 24 head positions accordingly.
If this vehicle 10 is when being driven by the different driver of height 24 or cockpit driver's sitting posture changes or driver's adjustment and bearing circle apart from the time; When the information of these driver's 24 head positions may change at any time; See also Fig. 2, be scheme drawing according to the real-time caution system on the vehicle windscreen of second embodiment of the invention.Real-time caution system on this vehicle windscreen is compared with the embodiment of Fig. 1; Comprise that further one is electrically connected to the sensing unit 40 of this calculating and control unit 18; It is sent to this calculating and control unit 18 in order to these driver's 24 head positions of sensing and with the result; So that this calculating and control unit 18 can be used for trying to achieve online 26 between these driver's 24 head positions and this obstacle 22, further calculate this intersection point 28 again.The position that is provided with of this sensing unit 40 for example is adjacent to this light projecting unit 20, or the position can photograph this driver's 24 head position parts at other.This sensing unit 40 can for example be a Charged Coupled Device (charge coupled device, CCD), a complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS) inductor or other rang sensor.
Can know that to sum up embodiment as shown in Figure 1 is these driver's 24 head positions of sensing not, embodiment as shown in Figure 2 comprises that then this sensing unit 40 comes these driver's 24 head positions of sensing, so this intersection point that it calculated will be more accurate.
See also Fig. 3, for this caution symbol 30 is projeced into the scheme drawing on this Windshield 12.This caution symbol 30 is to be a circle shown in the figure; This circle can be around this obstacle 22 in these Windshield 12 the place aheads; The shape that is noted that this caution symbol 30 is not limited to circle, and it can also be triangle, square, polygon or irregularly shaped.In addition, this caution symbol 30 can be dotted line or solid line, and as previously mentioned, its color, brightness also can be done different appearing according to hazard level, and for example, the most dangerous situation of red representative must be noted to remind this driver 24 immediately.
See also Fig. 4, be the manner of execution diagram of circuit of the real-time caution system on the vehicle windscreen according to the present invention, this manner of execution comprises the following steps.
In step S400, take the image of this vehicle front continuously with an image capturing unit.
In step S410, judge an obstacle according to the image of this vehicle front.When judging that this vehicle front has this obstacle with the position that calculates this obstacle simultaneously.
In step S420, connect straight line according to one between a driver and this obstacle, calculate one of the Windshield intersection point of this connection straight line and this vehicle.In a preferred embodiment; Be moving direction and speed according to this obstacle; And the working direction of this vehicle and speed; Calculate through the obstacle after the dead time and estimate the position and driver's head is estimated the position, so calculate this obstacle estimate position and this driver's head estimate the position both, through this intersection point that should connect straight line and this Windshield after this dead time.In another embodiment, the information of this driver's head position is to be stored in advance.In another embodiment, this system further comprises the step of this driver's head position of a sensing.
In step S430, at this intersection point place, on this Windshield, produce a caution symbol with a smooth projecting unit.This light projecting unit can be done the motion of a plurality of degree of freedom, so that this light projecting unit can any position generation on this Windshield should be warned symbol.Preferably, this caution symbol is to result from this intersection point.
Real-time caution system and manner of execution thereof on the present invention's the vehicle windscreen can make the driver directly see from Windshield and possibly cause dangerous obstacle, and then reduce the convention contingent danger when watching monitoring device of bowing.In addition, light projecting unit for example laser light projector is easy to control and installs, in the use can the more convenient and power saving than convention monitoring device.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the real-time caution system on the vehicle windscreen, it is characterized in that: this real-time caution system comprises:
One image capturing unit is in order to take the image of this vehicle front continuously;
One image process unit is electrically connected to this image capturing unit, to judge an obstacle and position thereof according to the image of this vehicle front;
One calculates and control unit, is electrically connected to this image process unit, to connect straight line according to one between driver's head position and this obstacle, calculates one of the Windshield intersection point of this connection straight line and this vehicle; And
One smooth projecting unit is electrically connected to this calculating and control unit, and this light projecting unit produces a caution symbol on this Windshield under the control of this calculating and control unit.
2. system according to claim 1; It is characterized in that: this calculating and control unit can be according to the moving direction and the speed of this obstacle; Working direction and speed with this vehicle; Calculate through the obstacle after the dead time and estimate the position and driver's head is estimated the position, calculate again this obstacle estimate position and this driver's head estimate the position both, in through this intersection point that should connect straight line and this Windshield after this dead time.
3. system according to claim 1 is characterized in that: it comprises that further one is electrically connected to the sensing unit of this calculating and control unit, is sent to this calculating and control unit in order to this driver's head position of sensing and with the result.
4. system according to claim 1 is characterized in that: this light projecting unit can be done the motion of a plurality of degree of freedom under the control of this calculating and control unit.
5. system according to claim 1 is characterized in that: this light projecting unit can be throwed a laser light to produce this caution symbol.
6. system according to claim 1 is characterized in that: this caution symbol is to result from this intersection point.
7. the manner of execution of the real-time caution system on the vehicle windscreen, it is characterized in that: this manner of execution comprises:
Take the image of this vehicle front continuously with an image capturing unit;
Judge an obstacle according to the image of this vehicle front;
Connect straight line according to one between driver's head position and this obstacle, calculate one of the Windshield intersection point of this connection straight line and this vehicle; And
Producing a caution symbol on this intersection point on this Windshield with a smooth projecting unit.
8. manner of execution according to claim 7; It is characterized in that: according to this connection straight line between this driver's head position and this obstacle; Calculating in the step of this intersection point of this straight line and this Windshield, is moving direction and the speed according to this obstacle, with the working direction and the speed of this vehicle; Estimate the position and driver's head is estimated the position and calculate through the obstacle after the dead time; Calculate the position of estimating of this obstacle again, and this driver's head estimate the position both, through this intersection point that should connect straight line and this Windshield after this dead time.
9. manner of execution according to claim 7; It is characterized in that: according to this connection straight line between this driver's head position and this obstacle; Calculate in the step of this intersection point of this straight line and this Windshield, further comprise the step of this driver's head position of a sensing.
10. manner of execution according to claim 7 is characterized in that: this caution symbol is to result from this intersection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100003769A CN102529832A (en) | 2011-01-04 | 2011-01-04 | Real-time caution system of vehicle wind retaining glass and execution method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100003769A CN102529832A (en) | 2011-01-04 | 2011-01-04 | Real-time caution system of vehicle wind retaining glass and execution method thereof |
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| CN102529832A true CN102529832A (en) | 2012-07-04 |
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| CN2011100003769A Pending CN102529832A (en) | 2011-01-04 | 2011-01-04 | Real-time caution system of vehicle wind retaining glass and execution method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0761257A (en) * | 1993-08-26 | 1995-03-07 | Nissan Motor Co Ltd | Display device for vehicle |
| US20060164219A1 (en) * | 2002-11-16 | 2006-07-27 | Peter Knoll | Method and device for warning the driver of a motor vehicle |
| JP2009188810A (en) * | 2008-02-07 | 2009-08-20 | Clarion Co Ltd | Vehicle periphery video display |
| CN101872069A (en) * | 2009-04-02 | 2010-10-27 | 通用汽车环球科技运作公司 | Strengthen vision system full-windshield HUD |
-
2011
- 2011-01-04 CN CN2011100003769A patent/CN102529832A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0761257A (en) * | 1993-08-26 | 1995-03-07 | Nissan Motor Co Ltd | Display device for vehicle |
| US20060164219A1 (en) * | 2002-11-16 | 2006-07-27 | Peter Knoll | Method and device for warning the driver of a motor vehicle |
| JP2009188810A (en) * | 2008-02-07 | 2009-08-20 | Clarion Co Ltd | Vehicle periphery video display |
| CN101872069A (en) * | 2009-04-02 | 2010-10-27 | 通用汽车环球科技运作公司 | Strengthen vision system full-windshield HUD |
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Application publication date: 20120704 |