CN207867476U - Device and related detection device for generating the infrared light curtain for being parallel to screen - Google Patents
Device and related detection device for generating the infrared light curtain for being parallel to screen Download PDFInfo
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- CN207867476U CN207867476U CN201721766045.5U CN201721766045U CN207867476U CN 207867476 U CN207867476 U CN 207867476U CN 201721766045 U CN201721766045 U CN 201721766045U CN 207867476 U CN207867476 U CN 207867476U
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Abstract
The detection device whether the utility model discloses a kind of is parallel to screen for detecting infrared light curtain, the infra-red laser diode transmitting infrared beam that the infrared light curtain is placed in by least two on screen are formed, and described device includes：Platform is reflected, is set to the exit direction of light beam, the light beam is radiated on the reflection platform and forms image；Prover, fits in the surface of the screen, the infrared light supply that the prover includes, and the light which sends out is formed in parallel with the reference line of reflection platform on the screen；Detection sensor is used to detect the reference line and described image, adjusts laser diode using regulating part according to result of detection, when the distance between the position of described image and the reference line are equal to a preset value, judges that the infrared light curtain is parallel to screen.The utility model avoids detection process and is depended on unduly to contact identification software, reduces corresponding cost, and entire detection process simple, intuitive.
Description
Technical field
The utility model is related to technical field of intelligent interaction, and in particular to one kind is for adjusting infra-red laser diode light beam
The regulating part of pitch angle, for detect infrared light curtain whether be parallel to screen detection device and for generate be parallel to screen
Infrared light curtain device.
Background technology
In the screen touch-control man-machine interactive system based on infrared light curtain, existing infrared light curtain is emitted by multiple lasers
Fan-shaped infrared surface be formed by stacking.Since infrared light is black light, so judging the light beam and screen that multiple lasers are sent out
It is whether parallel difficult.Current main device is to act on finger and carry out touch-control on screen, be located at screen front (or
Infrared camera below) can take finger contact image, according to the area of finger contact in image come judge light beam with
Whether screen is parallel, such as：When finger contact area is smaller in finger contact image, judges that light beam is parallel with screen, work as hand
When finger contact area is significantly greater than finger area, illustrate that light beam may be irradiated to the places such as the back of the hand, that is, light beam is uneven with screen
Row.The accuracy rate and consistency of this detection device all need to be further increased.
Utility model content
For the situation that infrared light curtain in the prior art is not easy to be detected whether to be parallel to screen, the application proposes one
Novel detection device is planted to detect whether infrared light curtain is parallel to screen, and the novel generation of one kind is provided and is parallel to screen
Infrared light curtain device.
In a first aspect, the utility model embodiment provide it is a kind of for detecting the inspection whether infrared light curtain is parallel to screen
Device is surveyed, the infra-red laser diode transmitting infrared beam that the infrared light curtain is placed in by least two on screen is formed, described
Device includes：
Platform is reflected, is set to the exit direction of light beam, the light beam is radiated on the reflection platform and forms image；
Prover, fits in the surface of the screen, the infrared light supply that the prover includes, which sends out
Light be formed in parallel on the screen reflection platform reference line；
Detection sensor is used to detect the reference line and described image, is adjusted using regulating part according to result of detection
Laser diode judges described infrared when the distance between the position of described image and the reference line are equal to a preset value
Light curtain is parallel to screen.
In some embodiments, the prover includes two pole of more than two infraluminescences as the infrared light supply
Pipe, described two above infrared light-emitting diodes connect to form the reference line；Alternatively, the prover is backlight, institute
The surface for fitting in the screen on one side stated the light-emitting surface of backlight or be oppositely arranged with light-emitting surface.
In some embodiments, prover and reflection platform be wholely set, the light that prover is sent out from reflection platform with
The side of screen fitting is projected, and the reference line of reflection platform is formed in parallel with.
In some embodiments, the distance of the vertical direction of screen described in the reflection platform upper edge is to be provided with mark at h
Note adjusts laser diode, makes the light beam that it sends out to screen when described image is located at side of the label far from screen
It is close；When described image is located at the label close to the side of screen, adjust laser diode, make the position of described image with
The distance between the reference line is identical.
Second aspect, the utility model embodiment provide a kind of dress for generating the infrared light curtain for being parallel to screen
It sets, described device includes：
At least two infra-red laser diodes, are set on screen, for emitting infrared beam, multiple laser diodes
The infrared beam sent out forms infrared light curtain in screen surface；
Regulating part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is set in the exit direction of infrared beam, the light beam is radiated at shape on the reflection platform
At image；
Prover is set between the infra-red laser diode and reflection platform, and the prover includes infrared light
Source, the light which sends out are formed in parallel with the reference line of reflection platform on the screen；
Detection sensor is used to detect the reference line and described image, and the regulating part is used according to result of detection
Laser diode is adjusted, until the distance between the position of described image and the reference line are equal to a preset value, so that described
Infrared light curtain is parallel to the screen.
The prior art mentioned by the application introductory song depends on video camera catching to the reflected light at finger contact
It obtains, related software extracts and identify that entire detection process is related to hardware and software to the contact for the image information that video camera captures
And the cooperation of the two, therefore, the influence factor that testing result is subject to is larger.And the proposition of the utility model then preferably solves
These problems avoid detection process and are depended on unduly to contact identification software, reduce corresponding cost, and entirely detected
Journey simple, intuitive.
Description of the drawings
Fig. 1 is the utility model another embodiment offer for detecting the detection whether infrared light curtain is parallel to screen
The schematic diagram of device.
Fig. 2 is the schematic diagram on the surface that the prover that the utility model one embodiment provides fits in screen.
Fig. 3 is another schematic diagram on the surface that the prover that the utility model one embodiment provides fits in screen.
Fig. 4 is the utility model another embodiment offer for detecting the detection whether infrared light curtain is parallel to screen
The flow chart of device.
Fig. 5 is the device for generating the infrared light curtain for being parallel to screen of the utility model another embodiment offer
Flow chart.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, Fig. 1 is the utility model another embodiment provide for detecting whether infrared light curtain is parallel to
The schematic diagram of the detection device of screen.
Shown in Fig. 1 infra-red laser diode 101,102 ..., n, these infra-red laser diodes can be arranged in screen
On a, such as the edge in the top of screen or screen is set, each infra-red laser diode sends out infrared beam, multiple infrared
The light beam that laser diode is sent out forms light curtain on the screen.It, can basis according to the needs of light curtain thickness evenness etc.
It needs, collimation focusing lens, Bao Weier prism etc. is loaded before laser diode, so that the light beam can be collimation and focus
Rectilinear light beam, can also be sector light beam.Multiple laser diodes 101,102 ..., the light beams that send out of n are along screen a
Surface form top-down infrared light curtain.It is this field so that the light beam that infra-red laser diode is sent out is carried out collimation and focusing
The common technology of technical staff, details are not described herein.For clarity, some two poles of infrared laser are only sparsely shown in figure
It manages, in actual conditions, according to the needs of touch accuracy, more intensive infra-red laser diode can be set.
The multiple laser diode for example can be first respectively arranged in multiple installation parts as shown in Figure 1, Suo Youan
Piece installing arranged in rows is arranged in sustained height, and the edge in the hole of installation part front end is made to recline screen, although this can't ensure
Emergent light is completely parallel to screen.It, can bowing to the emergent light of laser diode by the precession and back-out of the screw of surrounding
The elevation angle is angularly finely adjusted.
The detection device of screen whether is parallel to for detecting infrared light curtain includes：Platform 301 is reflected, light beam is placed in
In exit direction, the light beam is radiated on the reflection platform and forms image；Prover 201 fits in the table of the screen
Face makes the infrared light supply that the prover includes send out light, and the light which sends out is formed in parallel with reflection on the screen
The reference line of platform；Detection sensor b is used to detect the reference line and described image, and adjusting is used according to result of detection
Part adjusts the laser diode, when the distance between the position of described image and the reference line are equal to a preset value, sentences
The infrared light curtain that breaks is parallel to screen.
It will elaborate below to more details.
As shown in Figure 1, reflection platform 301 can be set to multiple laser diodes 101,102 ..., the light beams that send out of n
Exit direction, for example, can will reflection platform 301 setting on the screen, for example, it is opposite to be set to multiple laser diodes
The edge of screen, alternatively, reflection platform 301 can be arranged outside screen, for example, being arranged opposite in multiple laser diodes
On the extended line at the edge of screen, reflection is formed so that the light beam that multiple laser diodes are sent out can be radiated on reflection platform
Image, when laser diode sends out the rectilinear light beam of collimation and focusing, the reflected image is the reflectogram of circular spot shape
Picture；When laser diode sends out sector light beam, the reflected image is reflected image (herein, two long sides of strip
The upper and lower surfaces (or the face far from screen or face close to screen) of sector light beam in the thickness direction thereof can be considered as
It is formed with reflection platform action).
In some embodiments, reflection platform 301 can be vertically set on the screen a opposite with multiple laser diodes
Edge.
Please continue to refer to Fig. 1, can prover 201 be fitted in the surface of screen a by cohesive material, alternatively, can lead to
The surface that prover 201 is removably attached to screen a by dismountable connector is crossed, prover 201 may include that can send out
Go out the light source of infrared light, screen surface and the position by near reflex platform 301 can be set to, meanwhile, prover 201 can be with
It is parallel to the edge for the screen for being provided with reflection platform 301, the light that the infrared light supply is sent out for example can be along on prover
The side position to recline with screen transmit, bright together can be detected sensor detection to be formed in the position
The lines arrived, the lines are parallel to reflection platform, will be used as and refer to line, prover and screen can be determined by the lines position
The position that curtain reclines.The cohesive material is, for example, glue or double faced adhesive tape.The length of prover 201 can with the length of screen or
The identical either different such as shorter than length or width of screen of width.Detection sensor b is set to going forward for screen a at a certain angle
Side, the detection sensor b can be infrared camera, such as：Infrared camera b is set to above screen a apart from screen
The position of certain level distance (being, for example, 1m), and screen a and reflection platform 301 are respectively positioned on the angular field of view of infrared camera b
It is interior.In some cases, prover and reflection platform can be wholely set, the light that prover is sent out from reflection platform and screen
The side of fitting is projected, and the reference line of reflection platform is formed in parallel with.
In the utility model some embodiments, as shown in Fig. 2, Fig. 2 is the school that the utility model one embodiment provides
Quasi- instrument fits in a kind of schematic diagram when screen surface, and the prover 201 includes more than two infrared light-emitting diodes, and two
A above infrared light-emitting diode is affixed on the surface of screen a or more than two infrared light-emitting diodes with predetermined interval
The surface of screen a is fitted in arbitrary interval.Such as：At least two infrared light-emitting diodes are pasted on screen with adhesive material
The surface of curtain a, and keep its shinny at least two infrared light-emitting diode power supply, at least two infraluminescence two
The luminous point that the infrared light that pole pipe is sent out is formed connects, and forms the edges screen a that one is parallel to where reflection platform 301
Reference line.
In the utility model some embodiments, as shown in figure 3, Fig. 3 is the school that the utility model one embodiment provides
Another structural schematic diagram of quasi- instrument, the prover 201 can be backlights, and the backlight can be shone with side
The backlight of structure or backlight with bottom-emission structure.Backlight with side light emitting structure is by LED light source
It is set between the side in the space of the two panels optical diaphragm composition of backlight, LED sends out the light of required brightness, by backlight
Side light source is converted to formal area source by the effect of middle light guide plate, to make backlight emit beam；With bottom-emission
The backlight of structure is the bottom in the space for the two panels optical diaphragm composition that LED light source array is uniformly arranged on to backlight,
LED light source array is emitted beam with the direction perpendicular to light-emitting surface.
In some embodiments, opposite with light-emitting surface screen a can be pasted on the light-emitting surface of backlight or on one side
Surface, and backlight side is made to be parallel to the screen edge where reflection platform 301, detection sensor b acquires backlight
The infrared light that sends out of side, the lines of infrared light in the picture to send out backlight side are used as with reference to line.It is described
The length of backlight can be identical as the length and width edge of screen.
Detection sensor b is used to detect the speck formed by black light on reflection platform 41, in some embodiments, visits
It can be infrared camera to survey sensor b, and infrared camera can be on captured in real-time the prover light and reflection platform 301 that send out
The strip of formation or circular reflected image.The knob on installation part is adjusted, until infrared camera shows reflection platform 301
Upper strip image be parallel to the reference line (herein, it is described it is parallel refer to that two long sides of strip image are respectively parallel to
The reference line, two long sides can be considered as the upper and lower surfaces of sector light beam in the thickness direction thereof and reflection platform
Effect formed) namely the position of described image it is identical as the distance between the reference line；Or on reflection platform 301
Multiple circular images are all identical to the distance between the reference line, at this point it is possible to think the light beam that each laser diode is sent out
It is parallel to each other, when the distance meets preset value, judge that the light curtain that the light beam is formed is parallel to screen.
In the utility model some embodiments, the light beam of the laser diode transmitting on the screen at marginal position away from
The thickness of off screen curtain a is h, such as the distance at marginal position apart from screen is 3mm to light beam on the screen.It can be flat by reflection
Width of the platform 301 along vertical screen direction is set greater than equal to h, in practical applications, can reflection platform on distance screen
The place that curtain Edge Distance is h makes marks line, judges the position relationship between described image and the mark line, when reflection platform
On strip or circular image when being located at side of the mark line far from screen, illustrate that the distance of beam distance screen has been more than h,
It needs to adjust the pitch angle between laser diode and screen, makes the light beam that laser diode is sent out close to screen；When reflection is flat
When strip or circular image on platform are located at mark line close to the side of screen, illustrate the distance of beam distance screen default
In range, it can continue to adjust the knob on laser diode installation part so that the position of the strip image and the ginseng
Examine line it is parallel (herein, it is described it is parallel refer to that two long sides of strip image are respectively parallel to the reference line, it is described two long
Side can be considered as the upper and lower surfaces of sector light beam in the thickness direction thereof and reflect what platform action was formed), or make
The position of multiple circular images is identical as the distance between the reference line.
In the utility model some embodiments, the screen can be the screen of arbitrary material and shape, such as：Liquid
Crystalline substance, LED, DLP projection screen etc..
In the utility model some embodiments, when laser diode sends out the light beam of collimation and focusing, the screen
Can face screen or curve screens directly, laser diode can in the top of curve screens along curve flexible arrangement, from
And can ensure the light curtain even density on curve screens surface, at this point it is possible to make corresponding mark line or reference line also along song
Face bending distribution.Using the device for the generation infrared light curtain that the utility model embodiment provides, can ensure even if in face of curved surface
Screen, light curtain still can be parallel to screen, and accuracy and sensitivity are touched to improve.
It is provided as shown in figure 4, Fig. 4 is the utility model another embodiment for detecting whether infrared light curtain is parallel to screen
The flow chart of the detection device of curtain, the infrared light curtain emit infrared beam by multiple infra-red laser diodes being placed on screen
It is formed, as previously described；Described device includes：
S11：Reflection platform is set to the exit direction of light beam, the light beam is radiated at formation figure on the reflection platform
Picture.
Such as：Reflection platform can be set to beam exit direction, be located on screen, such as positioned at screen edge；Or
Reflection platform can be set on beam exit direction, and except screen.In the utility model some embodiments, reflection
Platform can be paper, backlight or lath etc..
S12：The surface that prover is fitted in the screen makes the infrared light supply that the prover includes send out light, should
The light that infrared light supply is sent out is formed in parallel with the reference line of reflection platform on the screen.
S13：The reference line and described image are detected using detection sensor, is adjusted using regulating part according to result of detection
The laser diode, when the distance between the position of described image and the reference line are equal to a preset value, described in judgement
Infrared light curtain is parallel to screen.
Component involved by above each steps of S11-S13 and connection relation therein can be done with reference to front around Fig. 1
Description.
Although it should be noted that the present embodiment with step S11 to step S13 to infrared light curtain provided by the utility model
The detection device for being parallel to screen is illustrated, but not because above-mentioned steps are to the detection device provided by the utility model
It is defined, that is to say, that in some cases, the action recorded in detail in the claims or step can be according to different from these
Sequence in embodiment executes and desired result still may be implemented.In some embodiments, multitasking and
Parallel processing is also possible or it may be advantageous.
As shown in figure 5, Fig. 5 is the utility model another embodiment provide for generating the infrared light for being parallel to screen
The flow chart of the device of curtain, described device include：
S21：Multiple laser diodes are set to the top of screen, lighting the multiple laser diode makes it send out light
Beam, the light beam that multiple laser diodes are sent out form infrared light curtain in screen surface.
S22：Reflection platform is set to the exit direction of the light beam, the light beam is radiated at shape on the reflection platform
At image.
S23：The surface that prover is fitted in the screen makes the infrared light supply that the prover includes send out light, should
The light that infrared light supply is sent out is formed in parallel with the reference line of reflection platform on the screen.
S24：The reference line and described image are detected using detection sensor, is adjusted using regulating part according to result of detection
Laser diode, until the distance between the position of described image and the reference line be equal to a preset value so that described infrared
Light curtain is parallel to screen.
Component involved by above each steps of S21-S24 and connection relation therein can be done with reference to front around Fig. 1
Description.
It should be noted that although the present embodiment is parallel to generation provided by the utility model with step S21 to step S24
It is illustrated, but described generate provided by the utility model is not put down because of above-mentioned steps in the method for the infrared light curtain of screen
Row is defined in the method for the infrared light curtain of screen, that is to say, that in some cases, that records in detail in the claims is dynamic
Work or step can execute according to different sequences in this present embodiment and desired result still may be implemented.Certain
In embodiment, multitasking and parallel processing is also possible or it may be advantageous.
The prior art mentioned by the application introductory song depends on video camera catching to the reflected light at finger contact
It obtains, related software extracts and identify that entire detection process is related to hardware and software to the contact for the image information that video camera captures
And the cooperation of the two, therefore, the influence factor that testing result is subject to is larger.And the proposition of the utility model then preferably solves
These problems avoid detection process and are depended on unduly to contact identification software, reduce corresponding cost.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (5)
1. a kind of for detecting the detection device whether infrared light curtain is parallel to screen, the infrared light curtain is placed in by least two
Infra-red laser diode transmitting infrared beam on screen is formed, and described device includes：
Platform is reflected, is set to the exit direction of light beam, the light beam is radiated on the reflection platform and forms image；
Prover fits in the surface of the screen, and the prover includes infrared light supply, and the light which sends out exists
The reference line of reflection platform is formed in parallel on screen；
Detection sensor is used to detect the reference line and described image, and laser is adjusted using regulating part according to result of detection
Diode judges the infrared light curtain when the distance between the position of described image and the reference line are equal to a preset value
It is parallel to screen.
2. according to claim 1 for detecting the detection device whether infrared light curtain is parallel to screen, which is characterized in that
The prover includes more than two infrared light-emitting diodes as the infrared light supply, described two above infrared hairs
Optical diode connects to form the reference line；Alternatively, the prover be backlight, the light-emitting surface of the backlight or with hair
The surface for fitting in the screen on one side that smooth surface is oppositely arranged.
3. according to claim 1 for detecting the detection device whether infrared light curtain is parallel to screen, which is characterized in that
Prover and reflection platform are wholely set, and the light that prover is sent out is projected from the side of reflection platform being bonded with screen, is formed
It is parallel to the reference line of reflection platform.
4. whether detection infrared light curtain according to claim 1 is parallel to the detection device of screen, which is characterized in that described
The distance of the vertical direction of screen described in reflection platform upper edge is to be provided with label at h, when described image is located at the label far
When the side of off screen curtain, laser diode is adjusted, keeps the light beam that it sends out close to screen；When described image is located at the label
When close to the side of screen, laser diode is adjusted, keeps the position of described image identical as the distance between the reference line.
5. a kind of device for generating the infrared light curtain for being parallel to screen, described device include：
At least two infra-red laser diodes, are set on screen, and for emitting infrared beam, multiple laser diodes are sent out
Infrared beam screen surface formed infrared light curtain；
Regulating part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is set in the exit direction of infrared beam, the light beam is radiated at formation figure on the reflection platform
Picture；
Prover is set between the infra-red laser diode and reflection platform, and the prover includes infrared light supply, should
The light that infrared light supply is sent out is formed in parallel with the reference line of reflection platform on the screen；
Detection sensor is used to detect the reference line and described image, is adjusted using the regulating part according to result of detection
Laser diode, until the distance between the position of described image and the reference line be equal to a preset value so that described infrared
Light curtain is parallel to the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721766045.5U CN207867476U (en) | 2017-12-18 | 2017-12-18 | Device and related detection device for generating the infrared light curtain for being parallel to screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721766045.5U CN207867476U (en) | 2017-12-18 | 2017-12-18 | Device and related detection device for generating the infrared light curtain for being parallel to screen |
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| CN207867476U true CN207867476U (en) | 2018-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336951A (en) * | 2018-12-18 | 2020-06-26 | 大陆汽车有限责任公司 | Method and apparatus for calibrating external parameters of image sensor |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336951A (en) * | 2018-12-18 | 2020-06-26 | 大陆汽车有限责任公司 | Method and apparatus for calibrating external parameters of image sensor |
| CN111336951B (en) * | 2018-12-18 | 2021-12-21 | 大陆汽车有限责任公司 | Method and apparatus for calibrating external parameters of image sensor |
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Effective date of registration: 20230331 Address after: 100085 room 02-a177, 2 / F, block B, 22 Xinhe Road, Haidian District, Beijing Patentee after: BEIJING ZEN-AI TECHNOLOGY Co.,Ltd. Address before: 31-37, No.1, Zhenbei Road, Internet Town, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314501 Patentee before: JIAXING RENGUANG WUZHEN TECHNOLOGY CO.,LTD. |