Can the comprehensive mirror system of Measuring Object actual rangeTechnical field
The present invention relates to automobile view mirror field, a kind of can the comprehensive mirror system of Measuring Object actual range.
Background technology
In existing automobile, it is provided with three rearview mirrors: room mirror, left-hand mirror, right rear view mirror, in order to observeRear view of vehicle position, wherein the rearview mirror in car is mainly used in observing the position at then rear seat windscreen rear, vehicle dead astern, andLeft and right rearview mirror is mainly used in observing the position at the left and right rear of vehicle.
But room mirror, left-hand mirror, right rear view mirror can not observe the situation of rear view of vehicle completely, there are many placesThe dead angle of blind area, i.e. sight line and the scope that the blind area in insensible place, such as room mirror is 3 meters of tailstock dead asternIn, the blind area of left and right rearview mirror with left and right car door angle 30 DEG C beyond scope；Affected by vehicle interior structure simultaneouslyMake the situation that the driver in car can not observe outside car completely, as the A post of vehicle, B post, C post can stop the sight line of driver,And scope is relatively big, although therefore driver's driving process having concentrated 12 points of spirit, but still suffer from the risk of accident, forThis existing automobile is provided with the auxiliary equipments such as radar for backing car, sonar system, backup camera, but radar for backing car and sonar systemSystem makes can't see real time imaging, and the scope of detection is general all in 2.5 meters, DeGrain, although and backup cameraBeing able to observe that image, but can not be shown to the distance with object, these auxiliary equipments are normally only applicable to reversing and use, forOther blind area is the most inapplicable；In addition driver's driving process needs the moment to observe room mirror and left and right rearview mirror, leadCause cannot concentrate the traveling road conditions noticing front, is easily caused vehicle accident.
In order to improve traffic safety, get rid of the blind area of sight line in automobile view mirror and car, need badly a can Measuring Object actualThe comprehensive mirror system of distance.
Summary of the invention
For solving the problems referred to above, the present invention provide a kind of can the comprehensive mirror system of Measuring Object actual range.
For achieving the above object, the technical solution used in the present invention is: a kind of can Measuring Object actual range comprehensiveMirror system, including plane mirror, photographic head, display, processing module, described plane mirror, photographic head are all located at outside car, described in take the photographAs head is fixedly installed on the front end of plane mirror relative with plane mirror, and the distance between photographic head and plane mirror, ground level is fixed,Described plane mirror is vertical with ground level, and described display, processing module are located in car, the input of wherein said processing module withThe outfan of photographic head connects, and the outfan of described processing module is connected with the input of display.
Specifically, described photographic head is projected in the horizontal normal of described plane mirror.
Specifically, described photographic head is perpendicular to the horizontal normal of described plane mirror.
Specifically, described photographic head is high-definition camera.
A kind of can the measuring method of comprehensive mirror system of Measuring Object actual range, comprise the following steps:
Put plane mirror at car peripheral hardware, plane mirror is arranged vertical with ground level；
The photographic head relative with plane mirror, fixing camera and plane mirror, the distance of ground level are set in plane mirror front；
In car, it is fixedly installed display and processing module, the outfan of photographic head is connected to the input of processing module, willThe outfan of processing module is connected to the input of display；
Determine the distance between photographic head and plane mirror, ground level, and input to processing module；
Determine that testee is projected to the angle of incidence of photographic head, and input famous dictum module after mirror imaging；
Determine testee imaging point on plane mirror and the horizontal range between photographic head, and set into processing module；
Calculated by processing module and determine the distance between testee and plane mirror, and export to display and show；
The image information of shooting is inputted to processing module by photographic head, then is shown to display by processing module output.
Specifically, measure testee by photographic head after mirror imaging, be projected to the angle of incidence of photographic head, and defeatedGo out to processing module.
Specifically, measure testee imaging point on plane mirror and the horizontal range between photographic head by photographic head,And export to processing module.
The beneficial effects of the present invention is: the present invention, by arranging the plane mirror vertical with ground level outside vehicle, is arrangedThe photographic head relative with plane mirror, the object after plane mirror can be presented on display by processing module by plane mirror by photographic headOn device, being equivalent to the eyes of people to be placed in outside car see plane mirror, the picture then photographic head seen is transferred to display, driverSee be exactly before mirror real distance between plane picture, and photographic head and plane mirror, ground level fix, become in conjunction with plane mirrorAs principle, it is that after the position between photographic head and plane mirror is fixed, object position of imaging in plane mirror is only after viewpoint is fixingOne, by processing module setup algorithm program, the distance of object and minute surface can be calculated in real time and show over the display,Can the outer all of situation of comprehensive display car, it is not necessary to i.e. be can be appreciated that the situation outside car by rearview mirror, thoroughly solve automobileVarious blind areas in use, make driving safer, reduce the difficulty driven, thus efficiently reduce sending out of vehicle accidentRaw.
Accompanying drawing explanation
Fig. 1 is the principle schematic of camera collection plane mirror image；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is display display image area scattergram.
Accompanying drawing explanation
1-plane mirror；2-display；3-photographic head；4-testee.
Detailed description of the invention
Refer to shown in Fig. 1-3, the present invention about a kind of can the comprehensive mirror system of Measuring Object actual range, includingPlane mirror 1, photographic head 3, display 2, processing module, described plane mirror 1, photographic head 3 be all located at outside car, and described photographic head 3 is solidSurely it is arranged on the front end of plane mirror 1 relative with plane mirror 1, and the distance between photographic head and plane mirror 1, ground level is fixed, instituteStating plane mirror 1 vertical with ground level, described display 2, processing module are located in car, the input of wherein said processing module withThe outfan of photographic head 3 connects, and the outfan of described processing module is connected with the input of display 2, and described photographic head 3 projectsIn the horizontal normal of described plane mirror 1, described photographic head 3 is perpendicular to the horizontal normal of described plane mirror 1.
Compared to equipment such as existing common radar for backing car, sonar system, backup cameras, the present invention is by outside vehicleArranging the plane mirror 1 vertical with ground level, arrange the photographic head 3 relative with plane mirror 1, photographic head 3 can be by flat by plane mirror 1Testee 4 after face mirror 1 shows on a display 2 by processing module, is equivalent to the eyes of people to be placed in outside car see planeMirror 1, is then transferred to display 2 the picture that photographic head 3 is seen, what driver saw is exactly real plane picture before mirror, andDistance between photographic head 3 and plane mirror 1, ground level is fixed, in conjunction with plane mirror 1 image-forming principle, after viewpoint is fixing, testee 4In plane mirror 1, the position of imaging is unique, by processing module setup algorithm program, can calculate testee in real timeDistance between 4 and horizon glass 1 also shows on a display 2, can the outer all of situation of comprehensive display car, it is not necessary to pass through backsightMirror i.e. can be appreciated that the situation outside car, thoroughly solves automobile various blind areas in use, makes driving safer, reduces and drivesDifficulty, thus efficiently reduce the generation of vehicle accident.
The operation principle of the present invention is as follows: the position fixing in plane mirror 1 front of one piece of fixed size and height is installedOne photographic head 3, photographic head 3 connects display 2 by processing module, and the picture on plane mirror 1 is transferred to display by photographic head 32, be so equivalent to have an eye to see image in the fixing place of plane mirror 1, actually plane mirror 1 is by the image of rear spaceBecome the picture of a width plane, owing to the height of plane mirror 1 and size dimension and viewpoint are all fixing, by combining planeMirror 1 image-forming principle, after viewpoint is fixing, object position of imaging in plane mirror 1 is unique, as material object is depended in the position occurredThe position of distance plane mirror 1.
And fixing due to the position between photographic head 3 and plane mirror 1, ground level in the present invention, then can be by the side of mathematicsMethod can calculate under level altitude and viewpoint, the relation that on plane mirror 1, any point imaging is in kind with space.Due to light pathReversible, it is possible to determine the space length of testee 4 from testee 4 position of picture on plane mirror, by imagingThe information such as distance between 3 and plane mirror 1 and the formula of conversion Calculation is arranged in processing module, and processing module calculates flatOn face mirror 1, any one image is from the real space distance of plane mirror 1, when photographic head 3 finds that the picture of testee 4 is at plane mirrorAfter any point on 1, display 2 just can demonstrate the testee distance from plane mirror 1.
When photographic head 3 from plane mirror 1 more close to time, photographic head 3 can see on the minute surface of plane mirror 1 as the most, onThe incident angle in lower left and right is the biggest, it can be seen that space the biggest.When photographic head 3 is pressed close to before plane mirror 1, left and right is incidentCorner connection is bordering on 180 degree, then plane mirror 1 all testees 4 below are nearly all it can be seen that be imaged in plane mirror 1, remainingBlind area can with centimetre calculate, be negligible.
If before and after a vehicle, left and right is each installs a plane mirror 1, then this vehicle periphery only exist theoretic with liThe blind area that rice calculates.After synthesizing with computer, can be on a display 2 by all for surrounding space representation out and permissibleCalculate reality distance, allow surrounding there is not blind area, be equivalent to vehicle body surrounding be mounted with four may only find range from eyes,And these four eyes are entirely outside car, even if not having vehicle window to nor affect on any effect, can thoroughly solve automobile in useVarious blind areas, make driving safer.
By the regulation of viewpoint, the blind area around vehicle body can narrow down in centimeters, and need not be left in driving procedureGo before and after the right side to see visor, it is only necessary to see a display 2, be presented in face of driver outside panorama, compare sonar and redColour system unified test away from directly perceived the most much, and by arranging the calculating of program in processing module, any object and car body can be demonstratedDistance, this most current vehicle-mounted range finding and back-sight visual system cannot be accomplished.
In conjunction with specific embodiments, being arranged on as a example by vehicle dead astern by plane mirror 1, photographic head 3 is fixedly installed on planeBefore mirror 1, photographic head is the nearest with the distance of plane mirror, and the incidence angle θ of light is closer to 180 degree, and photographic head can be at the mirror of plane mirror 1The image seen on face is the most, and angle, θ incident up and down is the biggest, it can be seen that space the biggest (as shown in Figure 1).
If the height of photographic head 3 is S1, photographic head 3 is S2 with the distance of plane mirror 1, and testee 4 is on plane mirror 1Horizontal range between imaging point and photographic head is S3, and the angle of incidence of testee 4 is α, between testee 4 and plane mirror 1 away fromFrom be S(as shown in Figure 2)；Wherein S1 and S2 is fixing can to pass through manual measurement, testee through plane mirror 1 reflective projectionTo photographic head 3, and identical according to mirror imaging principle, angle of incidence and angle of reflection, and angle of reflection is that α can pass through photographic head 3Measurement draws, owing to distance S2 between photographic head 3 and plane mirror 1 is fixing, then can measure S3 by photographic head；Distinguish subsequentlyS1, S2, S3, α are separately input into processing module, and the principle reversible according to light path also combines trigonometric function knowledge, at photographic head 3The height arranged, photographic head 3 and plane mirror 1 in the case of fixing, on plane mirror any point and photographic head 3 in folderAngle is fixing, along this angle according to the inverse principle of light path, can calculate any point and phase on ground level on minute surfaceThe distance of corresponding object. i.e. can calculate any point on plane mirror 1 and object right on ground level by mathematical methodShould be related to, as long as picture point occurs in the certain point on plane mirror 1, so that it may calculate a certain fixing at ground level of testee 4Position, thus can set processing module and calculate the computing formula of testee 4 and plane mirror 1 spacing as S=(S1-S3) tg(90 DEG C of-α), wherein S3 and α is variable, and processing module goes out between testee 4 and plane mirror 1 according to the change calculations of S3 and αIn real time distance, and export to display and show.
The image information of shooting is inputted to processing module by photographic head 3, then is shown to display 2 by processing module outputShow, the image of display 2 display as it is shown on figure 3, the picture of testee 4 that dash area is rear view of vehicle, as position from upperTo big (as shown in the direction of arrow) during lower change, then the testee 4 at car rear from car body more close to；Otherwise the position of picture is from bottom to upWhen diminishing (as shown in the direction of arrow), then testee 4 from car body more away from.
Embodiment of above is only to be described the preferred embodiment of the present invention, not enters the scope of the present inventionRow limits, on the premise of designing spirit without departing from the present invention, and this area ordinary skill technical staff technical side to the present inventionVarious deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.