CN202575597U - Elevator keys based on image recognition technology - Google Patents
Elevator keys based on image recognition technology Download PDFInfo
- Publication number
- CN202575597U CN202575597U CN 201220201594 CN201220201594U CN202575597U CN 202575597 U CN202575597 U CN 202575597U CN 201220201594 CN201220201594 CN 201220201594 CN 201220201594 U CN201220201594 U CN 201220201594U CN 202575597 U CN202575597 U CN 202575597U
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- Prior art keywords
- keyboard
- button
- camera
- projection module
- elevator
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Abstract
The utility model discloses elevator keys based on an image recognition technology. The elevator key comprises a keyboard, a linear infrared laser, a camera, a processor and a projection module, wherein the infrared light emitted by the linear infrared laser is parallel covered on the front side of the keyboard, and the back side of the keyboard is in a framing range of the camera; the camera and the projection module are respectively connected with the processor; when the keyboard is touched by a hand, the infrared light can be blocked to form a light spot, and because the keyboard is semi-transparent, an infrared light spot can be formed in an image collected by the camera; the specific position of the infrared light spot is determined through an image processing technology so as to determine which key of the keyboard is triggered, and the triggering of the key is identified by the processor and converted into a corresponding command to be executed; and meanwhile, the light is projected to a corresponding position on the keyboard through the projection module to display the key state so as to finish a man-machine interaction operation on the elevator.
Description
Technical field
The utility model relates to a kind of elevator push button, is specifically related to a kind of elevator push button based on image recognition technology.
Background technology
Existing elevator push button roughly is divided into following several kinds:
(1) traditional mechanical key
This type button adopts hardware circuit to realize, connects corresponding circuits when button is pressed, and number is the disclosed patent of CN201052939 " elevator button " like Chinese patent.Because elevator push button uses frequent, so this type of keyboard is easier to damage.Be directly to contact during simultaneously owing to use,, also can spread germs so keytop is dirty easily with finger.
(2) contactless elevator push button
It is mutual that this type button adopts principle such as optics to reach noncontact, number is the disclosed patent of CN101425416 " elevator push button that possesses non-contact optical switch " like Chinese patent.The advantage of this type of keyboard is noncontact, but as using optical elements such as infrared tube to realize, exists the payload space scope of key response less, the shortcoming that sensitivity is not high.
The utility model content
The shortcoming that the purpose of the utility model is to overcome prior art provides a kind of elevator push button based on image recognition technology with not enough.
The technical scheme that the utility model adopted:
A kind of elevator push button based on image recognition technology comprises keyboard, linear infrared laser, camera, projection module, treater, and said linear infrared laser is positioned at the below of keyboard; The infrared light that linear infrared laser is launched is parallel to be covered on the keyboard front; Camera is installed in the following rear at the keyboard back side, and the back side of keyboard is in the viewfinder range of camera, and projection module is installed in the rear at the keyboard back side; Do not block that finding a view of keyboard gets final product in the camera; Camera, projection module are connected with treater respectively, and digital face is positive in the said keyboard, countless literal be the back side;
Said treater: be used to receive the image of camera collection, and image is handled the button that obtains user's input, the input equipment of treating that sends to elevator supplies operation logic to call, and simultaneously push button signalling is sent to the projection module demonstration.
Said keyboard is the translucent planar materials that has the elevator push button pattern.
Said projection module is made up of a plurality of projecting cells, and a button on the corresponding keyboard of each projecting cell.
Said projecting cell comprises LED, concave mirror, shielding plate; LED is installed in the focus of concave mirror; The light that LED sends becomes collimated light behind concave mirror, this collimated light vertical irradiation is to shielding plate, and the shape of said shielding plate openwork part is identical with button on the pairing keyboard.
A kind of method of the elevator push button based on image recognition technology comprises the steps:
(1) camera is gathered the image that contains keyboard in real time;
(2) treater is found out the finger reflective infrared hot spot in the image, adopts the profile method of searching that hot spot is positioned, and obtains the center point coordinate of hot spot;
(3) adopt the method for judging based on the border intersection point to obtain the button of keyboard by the center point coordinate of hot spot;
(4) projection module projects to the button of confirming in the step (3) after receiving push button signalling, is pressed to user's display-object button, and simultaneously, the input equipment of treating that push button signalling is sent to elevator supplies operation logic to call.
The said method of judging based on the border intersection point is finally confirmed button by confirming that according to the spot center point coordinate button is expert at, is listed as, and is specially:
Set up rectangular coordinate system, X axle positive dirction be level to the right, Y axle positive dirction is for straight up;
Confirm that button is expert at: provide each row class square boundary in advance by key range; Cross the spot center point and do the straight line that is parallel to the Y axle; If intersecting, straight line and certain row type square boundary obtain two above intersection points; And wherein the ordinate of spot center point is positioned at the maxim and the minimum value scope of each intersection point ordinate, confirms that then button is on this row;
Confirm button place row: provide the class square boundary of each row in advance by key range; Cross the spot center point and do the straight line that is parallel to the X axle; If intersecting, straight line and certain row type square boundary obtain two above intersection points; And wherein the abscissa of spot center point is positioned at the maxim and the minimum value scope of each intersection point abscissa, confirms that then button lists at this;
According to button be expert at, Lieque decides button.
The utility model adopts the method debounce of delay confirmation; Through writing down and upgrade the method for each key-press status, when state variation, make key response.
Workflow: the infrared light that sends at linear infrared laser down auxiliary; When the finger tapping keyboard, then can produce an infrared light spot, the real-time images acquired of camera; Capture this hot spot, search the coordinate that algorithm is found out the hot spot position and obtained spot center point through profile; In conjunction with each presses the border of key range in the known keyboard, judge corresponding key by the coordinate of spot center point.Key-press status shows at the corresponding button of keyboard place through projection module; Simultaneously; The input equipment of treating that push button signalling outputs to elevator is called by the elevator operation logic, has finally realized using a kind of elevator push button based on image recognition technology to carry out the man-machine interaction in the elevator.
The beneficial effect that the utlity model has:
1, overcome the shortcoming that the prior mechanical elevator push button is fragile, easy dirty and spread germs.The button of the utility model is contactless alternately.
2, overcome in the contactless elevator push button that optical element such as existing use infrared tube realizes, existed sensitivity lower, the shortcoming that precision is not high.
3, keyboard portion is the semi-translucent planar materials, and is with low cost, can change as required.
4, adopt image recognition technology to realize that button is mutual, extensibility is good.
Description of drawings
Fig. 1 is a kind of front elevation of the elevator push button structure based on image recognition technology,
Fig. 2 is the lateral plan of Fig. 1,
Fig. 3 is the constructional drawing of projecting cell in the projection module,
Fig. 4 is the shielding plate scheme drawing,
The method scheme drawing of Fig. 5 for judging that button is expert at,
Fig. 6 is for judging the method scheme drawing of button place row.
Shown in the figure:
The linear infrared laser of 1-, 2-camera, 3-infrared light, 4-keyboard, 5-projection module, 6-LED, 7-concave mirror, 8-shielding plate.
The specific embodiment
Shown in accompanying drawing 1,2, a kind of elevator push button based on image recognition technology; Comprise linear infrared laser 1, camera 2, keyboard 4, projection module 5, treater, infrared light 3 parallel the covering on keyboard 4 fronts that said linear infrared laser 1 is launched, camera 2 is installed in the following rear at keyboard 4 back sides; And the back side of keyboard 4 is in the viewfinder range of camera 2; Projection module 5 is installed in the rear at keyboard 4 back sides, does not block that finding a view of keyboard 4 gets final product in the camera 2, and camera 2, projection module 5 are connected with treater respectively; Digital face is positive in the said keyboard 4, countless literal be the back side.
Said treater: be used to receive the image of camera collection, and image is handled the button that obtains user's input, the operation logic of treating input equipment power supply ladder that sends to elevator calls, and simultaneously push button signalling is sent to the projection module demonstration.
Keyboard 4 is for having the translucent planar materials of elevator push button pattern.
Said projection module 5 is made up of a plurality of projecting cells, and the button on the corresponding keyboard 4 of each projecting cell.
A kind of method of the elevator push button based on image recognition technology comprises the steps:
(1) camera 2 is gathered the image that contains keyboard 4 in real time;
The emergent light of linear infrared laser 1 is parallel to be covered on keyboard 4 fronts; Camera 2 is gathered the image that contains keyboard 4 in real time; When finger beats in the process of keyboard 4; Can block the infrared light 3 of linear infrared laser 1 when touching keyboard 4,, have an infrared light spot in the image that this moment, camera 2 collected because keyboard 4 is the semi-translucent planar materials.
(2) treater receives image, finds out the finger reflective infrared hot spot in the image, and the method that adopts profile to search positions hot spot, obtains the center point coordinate of hot spot;
The method that the location of said hot spot coordinate has adopted profile to search is found out light spot profile, and obtains its center point coordinate by the coordinate calculation of mean value of being had a few on the profile.
Be specially: earlier with image binaryzation, the hot spot place is designated as white, and all the other are regarded as background, are designated as black.Cut out the internal point of hot spot then, the determination methods of so-called internal point is: in the square of 3*3, when center-point is a white point, and its 8 neighborhood points also are white point, and promptly center-point is surrounded by white point, and then this center-point is an internal point.Afterwards from initial point; Through from all directions to search (so-called from all directions to, be about in the plane 360 degree and spend a direction by per 45, be divided into eight directions of search; Search procedure is set direction next time through the situation of current direction the right and left pixel); Profile is irised out, and write down the coordinate of each point on the profile, obtain the coordinate of profile center-point E by the coordinate calculation of mean value of being had a few on the profile.
(3) adopt the method for judging based on the border intersection point to obtain the button of keyboard by the center point coordinate of hot spot;
Judge its corresponding key in keyboard 4 by the coordinate of spot center point E and adopt following algorithm; In the said rectangular coordinate system that relates to X axle positive dirction be level to the right; Y axle positive dirction describes below in conjunction with the button that in the button pattern in the present embodiment is 6 row, 2 row for straight up.
Because number of keys is more, adopt the judgement button to be expert at, to be listed as the particular location that draws button.
Judge the method that button is expert at: shown in accompanying drawing 5, the E point is the finger spot center point of touching button, and 6 class rectangles are the range boundary of 6 row buttons; Cross the E point and do the straight line that is parallel to the Y axle; Possibly obtain intersection point with 6 class rectangle intersections,, X arranged then like the A among Fig. 5, B, C, D point
A=X
B=X
C=X
D=X
E(therefore look for intersection point promptly on type of the finding out rectangle with the identical point of E point abscissa); If being parallel to the number of hits of the straight line of Y axle and the class rectangle that certain is gone is more than two; And the intersection point that wherein has is positioned at E point top, and the intersection point that has in addition is positioned at E point below, and the ordinate of promptly said spot center point coordinate E is between the maxim and minimum value of each intersection point ordinate; Then can judge the E point in such rectangle, promptly obtain button and be expert at.
Satisfying this condition like the C among Fig. 5, D point (is Y
C>Y
E, Y
D<y
E), A, B point then do not satisfy this condition (Y
A>Y
E, Y
B>Y
E), therefore can judge button at the 2nd row.
In above-mentioned, X
A, X
B, X
C, X
D, X
EBe respectively the abscissa of an A, B, C, D, E, Y
A, Y
B, Y
C, Y
D, Y
EBe respectively the ordinate of an A, B, C, D, E.
In like manner, judge the method for button place row: shown in accompanying drawing 6, the E point is the finger spot center point of touching button; 2 class rectangles are the range boundary of 2 row buttons, cross E and do the straight line that is parallel to the X axle, possibly obtain intersection point with 2 class rectangle intersections; Like the F among Fig. 6, G, H, I point, Y is arranged then
F=Y
G=Y
H=Y
I=Y
E(therefore look for intersection point promptly on type of the finding out rectangle with the identical point of E point ordinate); If the number of hits on certain row type rectangle is more than two; And the intersection point that wherein has is positioned at the E point left side, and the intersection point that has in addition is positioned at E point the right, and the abscissa of promptly said spot center point E is between the maxim and minimum value of each intersection point abscissa; Then can judge the E point in such rectangle, promptly obtain button place row.
Satisfying this condition like the F among Fig. 6, G point (is X
G＞X
E, X
F<x
E), H, I point then do not satisfy this condition (X
H>X
E, X
I＞X
E), therefore can judge button at the 1st row.
In above-mentioned, X
E, X
F, X
G, X
H, X
IBe respectively the abscissa of an E, F, G, H, I, Y
E, Y
F, Y
G, Y
H, Y
IBe respectively the ordinate of an E, F, G, H, I.
According to button be expert at, Lieque decides button.
The range boundary of said button row and column (i.e. type rectangle) needs given in advance; The straight line that E excessively mentioned above is ordered is more than two with the number of hits of type rectangle; If the range boundary of row and column (i.e. type rectangle) line segment is level and smooth; Then crossing the straight line that is parallel to the X axle that spot center point E done and the class square boundary number of hits of every row is 2, and the number of hits of crossing type square boundary of the straight line that is parallel to the Y axle that spot center point E done and every row is 2.
(4) treater sends to the input equipment of treating of elevator with push button signalling, and the operation logic of power supply ladder calls.And sending to projection module 5 simultaneously, projection module 5 projects to the button of confirming in the step (3) after receiving push button signalling, is pressed to user's display-object button.
Through projection module 5 corresponding button place display button state on keyboard 4: the application background that combines lift car; For destination key (promptly 1,2,3 etc. numerical key); If button is in the state that is labeled, then projection module 5 with ray cast at this key place, if the destination button is not labeled or cancels; Then throw light not comes show state with this; For opening the door, close the door button, if button is in the state that is pressed, then projection module 5 with ray cast at this key place, if the button that opens the door, closes the door is not pressed, throw light not then, the color of throw light is chosen as required.
Said projection module 5 is made up of a plurality of projecting cells, a button on the corresponding keyboard 4 of each projecting cell, the responsible state that shows this button.
As shown in Figure 3, said projecting cell comprises LED6, concave mirror 7, shielding plate 8, and LED6 is positioned at the along of concave mirror; The light that LED6 sends becomes collimated light after concave mirror 7 changes light path, this collimated light vertical irradiation is to shielding plate 8, and the structure of shielding plate 8 is that the shape according to button is come hollow out on opaque material; As shown in Figure 4; Key shape is a rectangle in the present embodiment, so openwork part is rectangle, and the light of LED6 is consistent with key shape through shielding plate 8 its cross-sectional view shapes of back; Can project and be used for show state on the button, the light on and off of LED6 are controlled according to the state of button by treater.
In the above-mentioned embodiment; Number can obtain hot spot pairing button in keyboard 4 by the row at button place number, row; And combine peripheral module such as projection module 5; Under the scheduling of elevator operation logic, realized using a kind of elevator push button to carry out the man-machine interaction in the elevator based on image recognition technology.
Claims (4)
1. the elevator push button based on image recognition technology is characterized in that, comprises keyboard, linear infrared laser, camera, projection module, treater; Said linear infrared laser is positioned at the below of keyboard; The infrared light that linear infrared laser is launched is parallel to be covered on the keyboard front, and camera is installed in the following rear at the keyboard back side, and the back side of keyboard is in the viewfinder range of camera; Projection module is installed in the rear at the keyboard back side; Camera, projection module are connected with treater respectively, and digital face is positive in the said keyboard, countless literal be the back side.
2. a kind of elevator push button based on image recognition technology according to claim 1 is characterized in that, keyboard is the translucent planar materials that has the elevator push button pattern.
3. a kind of elevator push button based on image recognition technology according to claim 1 is characterized in that said projection module is made up of a plurality of projecting cells, and a button on the corresponding keyboard of each projecting cell.
4. a kind of elevator push button according to claim 3 based on image recognition technology; It is characterized in that; Said projecting cell comprises LED, concave mirror, shielding plate; Said LED is installed in the focus of concave mirror, and the light that LED sends becomes collimated light behind concave mirror, and the shape of said shielding plate openwork part is identical with button on the pairing keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201594 CN202575597U (en) | 2012-05-08 | 2012-05-08 | Elevator keys based on image recognition technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201594 CN202575597U (en) | 2012-05-08 | 2012-05-08 | Elevator keys based on image recognition technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202575597U true CN202575597U (en) | 2012-12-05 |
Family
ID=47245035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220201594 Expired - Fee Related CN202575597U (en) | 2012-05-08 | 2012-05-08 | Elevator keys based on image recognition technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202575597U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106458505A (en) * | 2014-05-28 | 2017-02-22 | 奥的斯电梯公司 | Touchless gesture recognition for elevator service |
| CN111517189A (en) * | 2020-04-30 | 2020-08-11 | 像航（上海）科技有限公司 | Contactless aerial imaging elevator operating device |
-
2012
- 2012-05-08 CN CN 201220201594 patent/CN202575597U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106458505A (en) * | 2014-05-28 | 2017-02-22 | 奥的斯电梯公司 | Touchless gesture recognition for elevator service |
| CN111517189A (en) * | 2020-04-30 | 2020-08-11 | 像航（上海）科技有限公司 | Contactless aerial imaging elevator operating device |
| CN111517189B (en) * | 2020-04-30 | 2021-09-24 | 像航（上海）科技有限公司 | Contactless aerial imaging elevator operating device |
| WO2021217822A1 (en) * | 2020-04-30 | 2021-11-04 | 像航（上海）科技有限公司 | Contactless aerial imaging elevator operation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150508 |
|
| EXPY | Termination of patent right or utility model |