CN104850275B - Projection terminal and its projection touch-control implementation method - Google Patents
Projection terminal and its projection touch-control implementation method Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of projection terminal and its projection touch-control implementation method.The terminal includes: structural body；Projection arrangement is arranged on structural body, for projecting visible light picture in view field；Infrared distance sensor array is arranged on structural body, and infrared distance sensor array is formed with infrared touch area, and infrared touch area and view field are least partially overlapped, for detecting the touch control object in infrared touch area；Processing unit is connect with infrared distance sensor array, carries out touch control detection for controlling infrared distance sensor array, and touch control detection result is converted to control instruction.The infrared touch area and view field formed due to infrared distance sensor array is least partially overlapped, converts touch control detection result by processing unit, is formed as the control instruction of corresponding visible light picture, can be realized projection touch-control.Due to significantly reducing the technical difficulty for realizing projection touch-control without complicated image processing techniques.
Description
Technical field
The present embodiments relate to projection art more particularly to a kind of projection terminal and its projection touch-control realization sides
Method.
Background technique
Shadow casting technique is born to pass by for more than 370 years so far, successively experienced slide projector, cathode-ray tube (Cathode
Ray Tube, CRT), liquid crystal display (Liquid Crystal Display, LCD), digital light processing (Digital Light
Procession, DLP) and the technological changes such as liquid crystal on silicon (Liquid Crystal on Silicon, LCOS), projector
Volume hand-held is gradually also developed by desktop computer, greatly pushed the individualized process of projector, made projector no longer
It is only a public article, and becomes portable personal device.
However, the popularization of portable projector is as mobile phone, laptop etc. are widely recognized as, contrastingly,
In terms of display technology with their own characteristics, maximum difference is from interactive mode to two class products.It is well known that mobile phone, notebook
Computer etc. upgrades to the direct interactive mode of touch screen by the indirect interaction mode by keyboard, mouse and obtains immense success,
And projector then needs to carry out indirect operation by products such as mobile phone, plate, notebooks always, does not obtain on interactive mode prominent
Broken property progress, is not available family and obtains more natural touch experience in interactive mode.
Based on the obstruction problem that interactive mode promotes projector products, Ji Jia big companies in the world have been opened
Relevant research work has been opened up, such as: the OmniTouch technology of MS, Light Blue Optics company, Britain
Light Touch technology and the Virtual Touch technology of Japanese fujitsu etc., achieve one in terms of projecting touch-control
Fixed progress.
Above-mentioned several projection touch technologies, which have the disadvantage that, is required to complicated image procossing, to project touch-control row
Industry development is provided with higher technical threshold.
Summary of the invention
The embodiment of the present invention provides a kind of projection terminal and its projection touch-control implementation method, is realized with reducing in projection terminal
Project the difficulty of touch-control.
In a first aspect, the embodiment of the invention provides a kind of projection terminals, comprising:
Structural body；
Projection arrangement is arranged on the structural body, for projecting visible light picture in view field；
Infrared distance sensor array is arranged on the structural body, and the infrared distance sensor array is formed with red
Outer touch area, the infrared touch area and the view field are least partially overlapped, for detecting the infrared Touch Zone
Touch control object in domain；
Processing unit is connect with the infrared distance sensor array, for controlling the infrared distance sensor array
Touch control detection is carried out, and touch control detection result is converted into control instruction.
Second aspect, the embodiment of the invention provides a kind of projection touch-control implementation method of projection terminal, the projection is eventually
End is the projection terminal that any embodiment of that present invention provides, this method comprises:
Using projection arrangement projection visible light picture in view field；
Touch-control inspection is carried out to the touch control object in infrared touch area using processing unit control infrared distance sensor array
It surveys, and touch control detection result is converted into control instruction；
Wherein, the infrared distance sensor array is formed with infrared touch area, the infrared touch area with it is described
View field is least partially overlapped.
Projection terminal provided in an embodiment of the present invention and its projection touch-control implementation method, project visible light by projection arrangement
Picture carries out the touch control object in infrared touch area using processing unit control infrared distance sensor array in view field
Touch control detection, since the picture of projection is visible light picture, and the touch control detection of infrared touch area relies on infrared light, the two wave
Duan Butong, therefore, it is seen that light does not influence touch control detection, and infrared light does not influence drop shadow effect；Due to infrared distance sensor array
The infrared touch area and view field formed is least partially overlapped, therefore is turned touch control detection result by processing unit
It changes, is formed as the control instruction of corresponding visible light picture, can be realized projection touch-control.Due to without complicated image procossing skill
Art significantly reduces the technical difficulty for realizing projection touch-control.
Detailed description of the invention
In order to illustrate more clearly of the present invention, one will be done to attached drawing needed in the present invention below and be simply situated between
It continues, it should be apparent that, drawings in the following description are some embodiments of the invention, and those of ordinary skill in the art are come
It says, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 a is a kind of structural schematic diagram for projection terminal that the embodiment of the present invention one provides；
Fig. 1 b is the schematic diagram of view field and infrared touch area compatibility in projection terminal provided in an embodiment of the present invention；
Fig. 1 c is the projection touch-control schematic illustration of projection terminal provided in an embodiment of the present invention；
Fig. 2 a is the projection touch-control schematic illustration of projection terminal provided by Embodiment 2 of the present invention；
The schematic diagram of a scenario that Fig. 2 b is applicable in by projection terminal provided by Embodiment 2 of the present invention；
Fig. 3 a is a kind of schematic diagram for projection terminal that the embodiment of the present invention three provides；
The applicable schematic diagram of a scenario of the projection terminal that Fig. 3 b is provided by the embodiment of the present invention three；
The structural schematic diagram of processing unit in a kind of projection terminal that Fig. 4 provides for the embodiment of the present invention four；
Fig. 5 is a kind of flow diagram of the projection touch-control implementation method for projection terminal that the embodiment of the present invention five provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to the embodiment of the present invention
In technical solution be described in further detail, it is clear that described embodiments are some of the embodiments of the present invention, rather than complete
The embodiment in portion.It is understood that described herein, the specific embodiments are only for explaining the present invention, rather than to of the invention
It limits, based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.It also should be noted that for ease of description, attached drawing
In only some but not all of the content related to the present invention is shown.
Embodiment one
Fig. 1 a is please referred to, for a kind of structural schematic diagram for projection terminal that the embodiment of the present invention one provides.The projection terminal
It include: structural body, projection arrangement 120, infrared distance sensor array 130 and processing unit (not shown).
The projection arrangement 120 is arranged on the structural body, for projecting visible light picture in view field；Specifically
Ground, the structural body can include: main structure body 111 and support structure 112, the support structure 112 and the main structure
Body 111 connects, and the projection arrangement 120 may be provided in the support structure 112.
Infrared distance sensor array 130 is arranged on the structural body, specifically may be provided at the main structure body 111
On, the infrared distance sensor array 130 is formed with infrared touch area, the infrared touch area and the view field
Least partially overlapped, for detecting the touch control object in the infrared touch area, the touch control object can be the finger of user.
Preferably, the support structure 112 connect and can be rotated, the benefit being arranged in this way with the main structure body 111
It is: the corresponding view field of projection arrangement 120 can be adjusted flexibly, so that the view field and infrared distance sensor array
The 130 infrared touch area compatibilities formed.
View field and infrared touch area are illustrated below with reference to Fig. 1 b.In Fig. 1 b, the infrared distance measurement sensing
Device array 130 can include: at least two infrared distance sensors, by the setting linear linear distribution of spacing, wherein the setting
Spacing refers to the distance between two neighboring infrared distance sensor.It is illustrated with example shown in Fig. 1 b, it is specifically, described red
Outer ranging sensor array 130 includes successively from left to right 15 infrared distance sensors, and serial number is respectively a1~a15.Projection
Device 120 projects visible light picture in view field 121；The infrared touch area is according to the infrared distance sensor battle array
The ranging length L2 of the array length L1 of column 130 and the infrared distance sensor array, which is divided, to be determined, as shown in Figure 1 b, is thrown
Shadow zone domain is compatible with infrared touch area.
The processing unit is connect with the infrared distance sensor array 130, for controlling the infrared distance measurement sensing
Device array 130 carries out touch control detection, and touch control detection result is converted to control instruction.
Projection touch-control principle is illustrated below with reference to Fig. 1 c.The specific structure and Fig. 1 b of projection terminal shown in Fig. 1 c
It is identical, it repeats no more.For clarity, it is assumed that X-axis is parallel with the array length direction of infrared distance sensor array 130, and X
The positive direction of axis is directed toward the biggish direction of infrared distance sensor serial number；Y-axis is vertical with X-axis namely Y-axis is perpendicular to infrared distance measurement
The array length direction of sensor array 130, and the infrared light that the positive direction of Y-axis and infrared distance sensor array 130 emit
Direction matching；Coordinate origin is located at the exit of infrared distance sensor a1 transmitting infrared light.When touch control object (such as finger) M into
When row is clicked, processing unit controls each infrared distance sensor work in infrared distance sensor array 130, corresponds to touch-control
This touch action can be detected in the infrared distance sensor a6 of the position object M, obtains touch control object M and the touch-control distance y between itself,
And processing unit is fed back to, so that processing unit obtains the Y axis coordinate y of touch control object M；Processing unit is in work also according to described
Make the infrared distance sensor of state serial number a6 and the setting spacing (being assumed to be X0), obtain the X axis coordinate x of touch control object M,
Specifically, x=(6-1) * X0, to obtain the position (x, y) of touch control object M；Processing unit by the position of the touch control object (x,
Y) conversion forms the control instruction of corresponding visible light picture.
Wherein, each infrared distance sensor can be laser range finder；The in running order infrared distance measurement
Sensor is particularly used in based on laser pulse ranging method, phase-shift laser rangefinder method or laser triangulation method, detects touch control object
With the touch-control distance between itself, and the processing unit is fed back to.
The technical solution of the present embodiment projects visible light picture in view field, using processing unit by projection arrangement
Control infrared distance sensor array in infrared touch area touch control object carry out touch control detection, due to projection picture be can
Light-exposed picture, and the touch control detection of infrared touch area relies on infrared light, the two wave band is different, therefore, it is seen that light does not influence to touch
Control detection, infrared light do not influence drop shadow effect；The infrared touch area and projected area formed due to infrared distance sensor array
Domain is least partially overlapped, therefore is converted touch control detection result by processing unit, is formed as corresponding visible light picture
Control instruction, can be realized projection touch-control.Due to significantly reducing realization projection touching without complicated image processing techniques
The technical difficulty of control.
It should be noted that each infrared distance sensor in Fig. 1 b and Fig. 1 c in infrared distance sensor array 130 is pressed
The linear linear distribution of spacing is set, is advantageous in that by setting spacing distribution: being conducive to processing unit according to described in work
The serial number and the setting spacing for making the infrared distance sensor of state obtain the X axis coordinate of touch control object.Wherein, linearly linear
Distribution is not limited to infrared distance sensor array 130, each infrared distance measurement sensing in infrared distance sensor array 130
Device can also be distributed in herringbone or other shapes, as long as the infrared Touch Zone that the infrared distance sensor array 130 is formed
Domain and the view field are least partially overlapped.
Embodiment two
The present embodiment provides a kind of projection terminal, the present embodiment on the basis of the above embodiments, provides infrared distance measurement
A kind of preferred implementation scheme of sensor array.
The infrared distance sensor array includes: at least two infrared distance sensors, linearly linear by setting spacing
Distribution；Each infrared distance sensor is used for the in running order and dormant state under the control of the processing unit,
The in running order infrared distance sensor feeds back to institute for detecting touch control object and the touch-control distance between itself
State processing unit, wherein the setting spacing refers to the distance between two neighboring infrared distance sensor.
In the present embodiment, preferably, each infrared distance sensor is under the control of the processing unit at timesharing
In working condition, touch control detection is carried out.The control mode that scan round can specifically be used, can avoid multiple work at the same time in this way
Infrared distance sensor feed back the detection signal of multiple pairs of touch control objects and be difficult to calculate the position of touch control object, concrete operating principle
It is described as follows.
The device parameters of each infrared distance sensor are identical, the angle of divergence of the infrared beam emitted between 0 °~
Between 5 °, the setting spacing meets: the light beam of the touch control object reflection of any position can be set in the infrared touch area
The infrared distance sensor of fixed number amount detects, and the setting quantity is not less than 1.That is, the spacing between infrared distance sensor is answered
It is sufficiently small, to avoid there is check frequency.
Each infrared distance sensor can include: infrared light supply, for emitting infrared beam, the infrared beam emitted
The angle of divergence is between 0 °~5 °；Infrared detector is correspondingly arranged with the infrared light supply, for detecting through touch control object reflection
Infrared beam, and determine according to the infrared beam of reflection the touch-control distance between the infrared detector and the touch control object.
If the angle of divergence for the infrared beam that infrared light supply is emitted is greater than 5 °, each infrared distance sensor is also wrapped
Include: the beam exit location of the infrared light supply is arranged in reshaping structure, the infrared beam for issuing to the infrared light supply
Optical shaping is carried out, to reduce the beam divergence angle of the infrared beam, specifically, the angle of divergence of the infrared beam is reduced
To between 0 °~5 °, to obtain the angle of divergence close to zero linear type infrared light.
Example 1
The projection touch-control principle under Time-sharing control is illustrated below with reference to Fig. 2 a.The infrared distance sensor array
230 include 15 infrared distance sensors, by setting the linear linear distribution of spacing X0, it is assumed that 15 infrared distance sensors from
The serial number of left-to-right is respectively a1~a15, wherein the setting spacing meets: in the infrared touch area any position
The light beam of touch control object reflection can be detected by 1 infrared distance sensor.
Assuming that touch control object M is located at below infrared distance sensor a1, touch control object M is located at the ranging of infrared distance sensor a1
In range, and after touch control object M diffusing reflection occurs for the infrared light that infrared distance sensor a1 mid-infrared light source 2311 emits, anti-
It penetrates light not only to be received by the infrared detector 2312 in infrared distance sensor a1, while can also reflect and be sensed into infrared distance measurement
In device a2, infrared distance sensor a3, infrared distance sensor a4 and the respective infrared detector of infrared distance sensor a5.
When infrared distance sensor a1 is in running order under the control of processing unit, remaining infrared distance sensor
In a dormant state, infrared light of the infrared light of infrared distance sensor a1 transmitting after touch control object M reflection only can be infrared
Infrared detector 2312 in distance measuring sensor a1 responds after receiving, and infrared distance sensor a2~infrared distance sensor
A5 is not responded then, and therefore, in running order infrared distance sensor a1 carries out touch control detection, obtain touch control object M with
Touch-control distance y between itself, and processing unit is fed back to, so that processing unit obtains the Y axis coordinate y of touch control object M；Processing
Serial number a1 and the setting spacing of the device also according to the in running order infrared distance sensor, obtain touch control object M
X axis coordinate x, to obtain the position (x, y) of touch control object M；Shape is converted in the position (x, y) of the touch control object by processing unit
At the control instruction of corresponding visible light picture.It should be noted that X-axis and Y-axis can be found in illustrating for above-described embodiment.
When infrared distance sensor a2 is in running order under the control of processing unit, remaining infrared distance sensor
In a dormant state, since touch control object M is not in the ranging range of infrared distance sensor a2, it not will do it touch-control inspection
It surveys.Similarly, infrared distance sensor a3~infrared distance sensor a15 will not carry out touch control detection.
Example 2
Another projection touch-control principle under Time-sharing control is illustrated below.Assuming that the infrared distance sensor battle array
Column include 15 infrared distance sensors, by setting the linear linear distribution of spacing X0, it is assumed that 15 infrared distance sensors from
The serial number of left-to-right is respectively a1~a15, wherein the setting spacing meets: in the infrared touch area any position
The light beam of touch control object reflection can be detected by 1 or more infrared distance sensor.Specifically can be sensed by 3 infrared distance measurements
For device detection namely touch control object M is not only located in the ranging range of infrared distance sensor a1, and is located at infrared distance measurement and is passed
In the ranging range of sensor a2 and infrared distance sensor a3.
When infrared distance sensor a1 is in running order under the control of processing unit, remaining infrared distance sensor
In a dormant state, infrared light of the infrared light of infrared distance sensor a1 transmitting after touch control object M reflection only can be infrared
Infrared detector in distance measuring sensor a1 is received, and infrared distance sensor a2~infrared distance sensor a5 is not rung
It answers, in this way, in running order infrared distance sensor a1 carries out touch control detection, obtains touch control object M and the touching between itself
Distance y1 is controlled, and feeds back to processing unit, so that processing unit obtains the Y axis coordinate y1 of touch control object M；Processing unit also according to
The serial number a1 of the in running order infrared distance sensor and the setting spacing, obtain the X axis coordinate of touch control object M
X1, to obtain the position (x1, y1) of touch control object M.
When infrared distance sensor a2 is in running order under the control of processing unit, remaining infrared distance sensor
In a dormant state, in running order infrared distance sensor a2 carries out touch control detection, obtain touch control object M and itself between
Touch-control distance y2, and processing unit is fed back to, so that processing unit obtains the Y axis coordinate y2 of touch control object M；Processing unit is also
According to the serial number a2 of the in running order infrared distance sensor and the setting spacing, the X-axis for obtaining touch control object M is sat
X2 is marked, to obtain the position (x2, y2) of touch control object M.
Similarly, when infrared distance sensor a3 is in running order under the control of processing unit, touch-control inspection is carried out
It surveys, touch control object M and the touch-control distance y3 between itself is obtained, and feed back to processing unit, so that processing unit obtains touch-control
The Y axis coordinate y3 of object M；Processing unit also according to the in running order infrared distance sensor serial number a3 and described set
Fixed spacing obtains the X axis coordinate x3 of touch control object M, to obtain the position (x3, y3) of touch control object M.
Since touch control object M is not in the ranging range of infrared distance sensor a4, touch control detection not will do it.It is similar
Ground, infrared distance sensor a5~infrared distance sensor a15 will not carry out touch control detection.
In this way, processing unit can determine touch control object according to the position (x1, y1), (x2, y2) and (x3, y3) of the touch control object
Operating space, so that conversion forms the control instruction of corresponding visible light picture.
The technical solution of the present embodiment, each of infrared distance sensor array infrared distance sensor are being handled
In running order and dormant state under the control of device, preferably timesharing is in running order, by running order
Infrared distance sensor carries out touch control detection to the touch control object in infrared touch area, on the one hand, avoids due to all infrared
Distance measuring sensor work at the same time caused by be difficult to judge the serial number of infrared distance sensor corresponding to touch control object, to be difficult to
Touch control object is determined the position coordinates on the array length direction of infrared distance sensor array the problem of, time-sharing work is conducive to
Processing unit accurately judges the serial number of infrared distance sensor corresponding to touch control object, enables processing unit according to the sequence
Setting spacing number between two neighboring infrared distance sensor is accurate to determine touch control object in infrared distance sensor array
Position coordinates on array length direction to improve the position detection accuracy of touch control object, and then improve projection touch-control
Precision；On the other hand, the angle of divergence for the infrared beam that each infrared distance sensor of use is emitted is smaller, further increases
The precision of position coordinates of the touch control object on the array length direction of infrared distance sensor array, correspondingly, further mentioning
The high position detection accuracy of touch control object, and then further improve the precision of projection touch-control；In another aspect, time-sharing work is advantageous
In reduction power consumption.
The projection terminal of the present embodiment is applicable to carry out projection touch-control (as shown in Figure 2 b) to free visible light picture.Example
Such as, to being incident upon on user's arm or the projection touch-control such as the free visible light picture of desktop is clicked, drags, zooms in or out
Operation.
Embodiment three
The present embodiment provides a kind of projection terminals, on the basis of example 1, provide infrared distance sensor array
Another preferred implementation scheme.
The infrared distance sensor array includes: at least two infrared distance sensors, linearly linear by setting spacing
Distribution；Each infrared distance sensor is used for the in running order and dormant state under the control of the processing unit,
The in running order infrared distance sensor feeds back to institute for detecting touch control object and the touch-control distance between itself
State processing unit, wherein the setting spacing refers to the distance between two neighboring infrared distance sensor.
In the present embodiment, preferably, each infrared distance sensor is under the control of the processing unit at timesharing
In working condition, touch control detection is carried out.The control mode of scan round can specifically be used.Time-sharing control can be found in above-mentioned implementation
Illustrating for example, repeats no more.
The device parameters of each infrared distance sensor are identical, the angle of divergence of the infrared beam emitted between 5 °~
Between 25 °, the setting spacing meets: in the ranging length of infrared distance sensor array, two neighboring infrared distance measurement is passed
The infrared beam that sensor respectively issues does not overlap.Specifically, by the design of setting spacing, so that two neighboring infrared distance measurement passes
The overlapping section start for the infrared beam that sensor respectively issues matches with the ranging length of infrared distance sensor array.
Wherein, since the device parameters of each infrared distance sensor are identical, the ranging of each distance measuring sensor is long
Degree can be used as the ranging length of infrared distance sensor array, it is assumed that the ranging length of each distance measuring sensor is L (such as Fig. 3 a
It is shown), in the ranging length L of infrared distance sensor array, two neighboring infrared distance sensor is respectively issued infrared
Light beam does not overlap；It is understood that except the ranging length L of infrared distance sensor array, two neighboring infrared distance measurement
The infrared beam that sensor respectively issues is overlapping, forms overlapping light field S.
The technical solution of the present embodiment, the infrared beam that two neighboring infrared distance sensor respectively issues are not overlapped, are kept away
Exempt to judge touch control object being difficult to caused by touch control object can be detected by two infrared distance sensors in light beam crossover region
The serial number of corresponding infrared distance sensor, to be difficult to determine touch control object in the array length of infrared distance sensor array
The problem of position coordinates on direction, be conducive to the sequence that processing unit accurately judges infrared distance sensor corresponding to touch control object
Number, enable processing unit according to the setting spacing between the serial number and two neighboring infrared distance sensor, it is accurate true
Position coordinates of the touch control object on the array length direction of infrared distance sensor array are determined, to improve the position of touch control object
Detection accuracy, and then improve the precision of projection touch-control.
It should be noted that the angle of divergence of the infrared beam emitted by each infrared distance sensor is larger, and touch
Control object is not necessarily located the underface of corresponding infrared distance sensor, and therefore, the corresponding infrared distance sensor of touch control object carries out
The touch control object that touch control detection arrives and the touch-control distance between itself and touch control object exist certain between the coordinate y of Y direction
Error (Y-axis can be found in illustrating for embodiment one) can will test if the error meets predetermined deviation range
Touch-control distance directly as touch control object Y direction coordinate y；Otherwise, processing unit is after obtaining the touch-control distance, also
It needs to be adjusted the touch-control distance, to reduce the error of itself and touch control object between the coordinate y of Y direction.
The projection terminal of the present embodiment is applicable to visible light picture (such as Fig. 3 b for including dummy keyboard or mouse disk
It is shown, wherein this includes that the visible light picture of dummy keyboard passes through the generation of projection arrangement 320 in projection terminal) it is thrown
Shadow touch-control.For example, the dummy keyboard in the visible light picture of projection on the table is clicked, thus realize and be clicked
The input of the corresponding character of virtual key, number or symbol etc., to realize that user draws the visible light for including dummy keyboard
The touch-control in face.
Example IV
The present embodiment provides a kind of projection terminal, the present embodiment provides a kind of place on the basis of the various embodiments described above
Manage the preferred embodiment of device.
Referring to Fig. 4, the processing unit includes: that timesharing driving unit 410, ranging computing unit 420 and instruction generate list
Member 430.
Wherein, timesharing driving unit 410 is for each infrared distance sensor into infrared distance sensor array, timesharing
Open command is sent, it is in running order to control each infrared distance sensor timesharing, carry out touch control detection；Ranging computing unit
420 for receiving the touch control object and the touch-control distance between itself that in running order infrared distance sensor returns, according to
Two neighboring infrared survey in the serial number of the in running order infrared distance sensor, the infrared distance sensor array
Position away from setting spacing and the touch-control distance calculating touch control object between sensor；Instruction generation unit 430 is used
In the position of the touch control object to be converted to the control instruction to form corresponding visible light picture.
Illustrating in embodiment two specifically is seen, is repeated no more.
The technical solution of the present embodiment, on the one hand, be conducive to processing unit and accurately judge infrared survey corresponding to touch control object
Serial number away from sensor enables processing unit according to the setting between the serial number and two neighboring infrared distance sensor
Spacing, the accurate position coordinates for determining touch control object on the array length direction of infrared distance sensor array, to improve
The position detection accuracy of touch control object, and then improve the precision of projection touch-control；On the other hand, power consumption is advantageously reduced.
Embodiment five
Referring to Fig. 5, a kind of process for projecting touch-control implementation method of the projection terminal provided for the embodiment of the present invention five
Schematic diagram.The projection terminal is the projection terminal that above-mentioned any embodiment provides.
This method comprises: step 510~step 520.
Step 510 projects visible light picture in view field using projection arrangement.
Step 520, using processing unit control infrared distance sensor array to the touch control object in infrared touch area into
Row touch control detection, and touch control detection result is converted into the control instruction to the visible light picture；
Wherein, the infrared distance sensor array is formed with infrared touch area, the infrared touch area with it is described
View field is least partially overlapped.
In the above scheme, using processing unit control infrared distance sensor array to the touch-control in infrared touch area
Object carries out touch control detection, and touch control detection result is converted to the control instruction to the visible light picture, under preferably including
State step:
Each infrared distance sensor of the processing unit into the infrared distance sensor array, timesharing, which sends to open, to be referred to
It enables, it is in running order to control each infrared distance sensor timesharing, carry out touch control detection；
Processing unit receives the touch control object and the touch-control between itself that in running order infrared distance sensor returns
Distance, according to adjacent in the serial number of the in running order infrared distance sensor, the infrared distance sensor array
Setting spacing and touch-control distance between two infrared distance sensors calculate the position of the touch control object；
The control instruction to form corresponding visible light picture is converted in the position of the touch control object by processing unit；
Wherein, each infrared distance sensor in the infrared distance sensor array is linearly linearly divided by setting spacing
Cloth.
The projection touch-control implementation method of projection terminal provided in an embodiment of the present invention can be provided by above-mentioned any embodiment
Projection terminal execute, have a corresponding beneficial effect.
Finally, it should be noted that the above various embodiments is only used to illustrate the technical scheme of the present invention, rather than it is limited
System；Preferred embodiment in embodiment, is not intended to limit it, to those skilled in the art, the present invention can be with
There are various modifications and changes.All any modification, equivalent replacement, improvement and so within the spirit and principles of the present invention,
It should be included within protection scope of the present invention.
Claims (4)
1. a kind of projection terminal characterized by comprising
Structural body；
Projection arrangement is arranged on the structural body, for projecting visible light picture in view field；
Infrared distance sensor array is arranged on the structural body, and the infrared distance sensor array is formed with infrared touching
Region is controlled, the infrared touch area and the view field are least partially overlapped, for detecting in the infrared touch area
Touch control object；
Processing unit is connect with the infrared distance sensor array, for each into the infrared distance sensor array
Infrared distance sensor, timesharing sends open command, in running order to control each infrared distance sensor timesharing, controls institute
It states infrared distance sensor array and carries out touch control detection, and touch control detection result is converted into control instruction；
Wherein, the structural body includes:
Main structure body, the infrared distance sensor array are arranged on the main structure body；
Support structure is connect with the main structure body, and the projection arrangement is arranged in the support structure, the carrying
Structural body connect and can be rotated with the main structure body；
The infrared distance sensor array includes:
At least two infrared distance sensors, by the setting linear linear distribution of spacing；Each infrared distance sensor is used
The in running order and dormant state under the control in the processing unit, in running order infrared distance measurement sensing
Device feeds back to the processing unit for detecting touch control object and the touch-control distance between itself, wherein the setting spacing is
Refer to the distance between two neighboring infrared distance sensor；
Wherein, the device parameters of each infrared distance sensor are identical, and the angle of divergence of the infrared beam emitted is between 0 °
Between~5 °, the setting spacing meets: the light beam of the touch control object reflection of any position can be by the infrared touch area
The infrared distance sensor detection of quantity is set, the setting quantity is not less than 1；Correspondingly, each infrared distance sensor can
It include: infrared light supply, for emitting infrared beam, the angle of divergence of the infrared beam emitted is between 0 °~5 °；Infrared spy
Device is surveyed, is correspondingly arranged with the infrared light supply, for detecting the infrared beam reflected through touch control object, and according to the infrared light of reflection
Beam determines the touch-control distance between the infrared detector and the touch control object；When the hair for the infrared beam that infrared light supply is emitted
When dissipating angle greater than 5 °, each infrared distance sensor further include: the beam exit position of the infrared light supply is arranged in reshaping structure
It sets, the infrared beam for issuing to the infrared light supply carries out optical shaping, to reduce the beam divergence of the infrared beam
Angle；
Alternatively, the device parameters of each infrared distance sensor are identical, the angle of divergence of the infrared beam emitted is between 5 °
Between~25 °, the setting spacing meets: in the ranging length of infrared distance sensor array, two neighboring infrared distance measurement
The infrared beam that sensor respectively issues does not overlap.
2. terminal according to claim 1, which is characterized in that at least two infrared distance sensor is Laser Measuring
Away from machine；
The in running order infrared distance sensor, it is specific using based on laser pulse ranging method, phase-shift laser rangefinder
Method or laser triangulation method detect touch control object and the touch-control distance between itself, and feed back to the processing unit.
3. terminal according to claim 1 to 2, which is characterized in that the processing unit includes:
Timesharing driving unit, for each infrared distance sensor into the infrared distance sensor array, timesharing transmission is opened
Instruction is opened, it is in running order to control each infrared distance sensor timesharing, carry out touch control detection；
Ranging computing unit, the touch-control distance returned for receiving in running order infrared distance sensor, according to described
The serial number of in running order infrared distance sensor, the setting spacing and touch-control distance calculate the touch-control
The position of object；
Instruction generation unit, for the position of the touch control object to be converted to the control instruction to form corresponding visible light picture.
4. a kind of projection touch-control implementation method of projection terminal, the projection terminal is throwing a method according to any one of claims 1-3
Shadow terminal, which is characterized in that this method comprises:
Using projection arrangement projection visible light picture in view field；
Touch control detection is carried out to the touch control object in infrared touch area using processing unit control infrared distance sensor array, and
Touch control detection result is converted to the visible light picture order；
Wherein, the infrared distance sensor array is formed with infrared touch area, the infrared touch area and the projection
Region is least partially overlapped；
Wherein, touch-control inspection is carried out to the touch control object in infrared touch area using processing unit control infrared distance sensor array
It surveys, and touch control detection result is converted into the control instruction to the visible light picture, comprising:
Each infrared distance sensor of the processing unit into the infrared distance sensor array, timesharing send open command, with
It is in running order to control each infrared distance sensor timesharing, carries out touch control detection；Wherein, each infrared distance sensor
Device parameters it is identical, between 0 °~5 °, the setting spacing meets the angle of divergence of the infrared beam emitted: described red
The light beam of the touch control object reflection of any position can be set the infrared distance sensor detection of quantity in outer touch area, described
It sets quantity and is not less than 1；Correspondingly, each infrared distance sensor can include: infrared light supply, for emitting infrared beam, institute
The angle of divergence of the infrared beam of transmitting is between 0 °~5 °；Infrared detector is correspondingly arranged, for examining with the infrared light supply
Survey the infrared beam that reflect through touch control object, and according to the infrared beam of reflection determine the infrared detector and the touch control object it
Between touch-control distance；When the angle of divergence for the infrared beam that infrared light supply is emitted is greater than 5 °, each infrared distance sensor is also
Include: reshaping structure, the beam exit location of the infrared light supply is set, the infrared light for being issued to the infrared light supply
Shu Jinhang optical shaping, to reduce the beam divergence angle of the infrared beam；
Alternatively, the device parameters of each infrared distance sensor are identical, the angle of divergence of the infrared beam emitted is between 5 °
Between~25 °, the setting spacing meets: in the ranging length of infrared distance sensor array, two neighboring infrared distance measurement
The infrared beam that sensor respectively issues does not overlap；
Processing unit receives the touch control object and the touch-control distance between itself that in running order infrared distance sensor returns,
According to two neighboring red in the serial number of the in running order infrared distance sensor, the infrared distance sensor array
Setting spacing and touch-control distance between outer distance measuring sensor calculate the position of the touch control object；
The control instruction to form corresponding visible light picture is converted in the position of the touch control object by processing unit；
Wherein, each infrared distance sensor in the infrared distance sensor array is by the setting linear linear distribution of spacing.
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| CN105589607B (en) * | 2016-02-14 | 2018-09-07 | 京东方科技集团股份有限公司 | Touch-control system, touch control display system and touch-control exchange method |
| CN106440381B (en) * | 2016-09-28 | 2019-10-08 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its control method and device |
| CN107121675B (en) * | 2017-05-04 | 2020-12-29 | 成都零点科技有限公司 | Remote displacement measuring device, system and method with clutter suppression function |
| CN107608569B (en) * | 2017-09-18 | 2020-08-25 | 联想(北京)有限公司 | Projection interaction method of electronic equipment and electronic equipment |
| CN108829294B (en) * | 2018-04-11 | 2021-08-27 | 卡耐基梅隆大学 | Projection touch method and device and projection touch equipment |
| CN109637371A (en) * | 2019-01-22 | 2019-04-16 | 王浪伟 | A kind of intelligent touch show window |
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