CN115705090A

CN115705090A - Positioning sensing device and input terminal equipment

Info

Publication number: CN115705090A
Application number: CN202110931969.0A
Authority: CN
Inventors: 刘鸿; 范超; 韩东成
Original assignee: Anhui Easpeed Technology Co Ltd
Current assignee: Anhui Easpeed Technology Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-02-17

Abstract

The invention discloses a positioning sensing device and input terminal equipment. The input terminal device has an over-the-air display area. The sensing light emitted by the positioning sensing device forms an input sensing area above the aerial display area. The position sensing device may sense a position and a travel depth of a touch input operation within the input sensing region. The positioning sensing device comprises at least one first sensing structure and at least one second sensing structure which are arranged in parallel. The first sensing structure and the second sensing structure are electrically connected with the mainboard. The first sensing structure and the second sensing structure generate sensing signals when sensing input operation exists in the input sensing area. The main board receives and judges the travel depth in the vertical direction of the input sensing area according to the sensing signals of the first sensing structure and the second sensing structure, and identifies the touch position in the input sensing area according to the sensing signal of the second sensing structure so as to realize three-dimensional sensing of touch operation.

Description

Positioning sensing device and input terminal equipment

Technical Field

The present invention relates to the technical field of contactless aerial imaging input devices, and in particular, to a positioning sensing device and an input terminal device with a positioning sensing device for use in a contactless aerial imaging input device.

Background

In the field of input terminal equipment, the input terminal equipment in the market at present has various functions, types and appearance styles, and is not limited to fingerprints, traditional keys, face recognition and the like. Wherein, to the input terminal equipment of traditional button, there is the risk of bacterial virus infection in the use, to the input terminal equipment of fingerprint identification type, leave over fingerprint information on the button easily in the use, and then have and stolen or leak etc. potential safety hazard by other people.

In view of the above, in the interactive aerial imaging, in order to realize the interactive function, the position of the touch click of the user needs to be confirmed by using the positioning sensing device. In the prior art, the positioning sensing device can only realize two-dimensional accurate positioning, can not carry out three-dimensional positioning on touch operation, and has poor human-computer interaction performance.

Disclosure of Invention

In view of the above situation, the present invention provides a positioning sensing device and an input terminal device, and aims to solve the problems that three-dimensional positioning cannot be achieved and user interaction experience is poor in the prior art.

The invention provides a positioning sensing device, which is applied to input terminal equipment with an aerial display area; the positioning sensing device is arranged in the input terminal equipment, and sensing light rays emitted by the positioning sensing device form an input sensing area above the air display area; a position and a travel depth of a touch input operation by the positioning sensing device within the input sensing region; the positioning sensing device comprises at least one first sensing structure and one second sensing structure which are arranged in parallel; the at least one first sensing structure and the second sensing structure are electrically connected with a main board in the input terminal equipment; at least one of the first sensing structures is located above the second sensing structure; the first sensing structure and the second sensing structure generate sensing signals when sensing input operation exists in the input sensing region; the main board receives and judges the travel depth in the vertical direction of the input sensing area according to the sensing signal of each first sensing structure and each second sensing structure, and identifies the touch position in the input sensing area according to the sensing signal of each second sensing structure so as to realize three-dimensional sensing of touch operation.

The invention also provides input terminal equipment, which comprises an upper shell, a lower shell, an optical assembly, a main board, a positioning sensing device and a display device, wherein the lower shell is fixedly clamped with the upper shell; the optical assembly and the positioning sensing device are contained in the upper shell, and the main board and the display device are contained in the lower shell; the optical assembly refracts the light emitted by the display device to the upper part of the input terminal equipment to form an aerial display area; a position and a depth of travel of the positioning sensing device for a touch input operation within the input sensing region; the positioning sensing device comprises at least one first sensing structure and one second sensing structure which are arranged in parallel; the at least one first sensing structure and the second sensing structure are electrically connected with a main board in the input terminal equipment; at least one of the first sensing structures is located above the second sensing structure; the first sensing structure and the second sensing structure generate sensing signals when sensing input operation exists in the input sensing region; the main board receives and judges the travel depth in the vertical direction of the input sensing area according to the sensing signal of each first sensing structure and the second sensing structure, and identifies the touch position in the input sensing area according to the sensing signal of the second sensing structure, so as to realize three-dimensional sensing of touch operation.

According to the positioning sensing device and the input terminal equipment, the first sensing structure and the second sensing structure are arranged to detect the position and the advancing depth of the touch input operation, and therefore three-dimensional sensing of the touch operation is achieved. And identifying the use state according to the sensing signals of the first sensing structure and the second sensing structure, identifying a pre-touch state, a touch input state, a false touch prompt state and other various states of touch input, and further optimizing user experience in the human-computer interaction process of the input terminal equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a perspective view of an input terminal device according to a preferred embodiment of the invention.

Fig. 2 is a partially exploded view of the input terminal device of fig. 1.

Fig. 3 is a schematic cross-sectional view of the input terminal device of fig. 1 along III-III.

Fig. 4 is a schematic diagram of an optical path of the input terminal device in fig. 1.

FIG. 5 is a partially exploded view of the position sensing device of FIG. 2, taken from another angle.

FIG. 6 is a partially exploded view of the sensing structure of FIG. 5.

Fig. 7 is a schematic block diagram of the sensor and the cylindrical lens of fig. 5.

Fig. 8 is a waveform diagram illustrating a driving signal of the sensor of fig. 5.

FIG. 9 is a partially exploded view of a second embodiment of the position sensing device of FIG. 2 taken at another angle.

Fig. 10 is a schematic diagram of an optical path of the input terminal device shown in fig. 9.

Fig. 11 is a schematic block diagram of the sensor and the cylindrical lens of fig. 9.

Description of the main elements

Input terminal device 1

Upper case 10

Lower case 20

Optical assembly 30

The position sensing

device

40, 40a,40b

Display device 50

Outer casing 21

Trapezoidal plate body 212

Rectangular plate body 214

Bottom plate 23

Side plate 24

Main board 25

Optical structure 31

Cover plate 32

Frame 34

Sensing support 41

Connecting part 412

Housing part 413

Sensing structure 43

The

first sensing structures

43a,43c

Second sensing structure 43b

Exit surface E

Substrate 430

Sensor 431

Lens part 432

Receiving unit 4311

Transmitting unit 4312

First lens 4321

Cylindrical lens 4324

Display stand 51

Position limiting part 512

Bearing part 513

Display structure 52

Aerial display area 300

Input sensing area 200

The first subregion 200a

Second subregion 200b

Third subregion 200c

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 is a block diagram of an input terminal device 1 according to a preferred embodiment of the present invention. The input terminal device 1 is used to form a hologram (not shown) in the air and generate a touch input signal by sensing a user's operation on the hologram. In at least one embodiment of the present invention, the input terminal device 1 may be applied in a self-service teller machine, and may also be applied in a human-computer interaction device such as a household appliance, a vehicle, and the like.

Referring to fig. 1 to 3, the input terminal apparatus 1 includes an upper housing 10, a lower housing 20, an optical assembly 30, a positioning sensing device 40, and a display device 50. The upper case 10 and the lower case 20 are detachably fixed together to form a receiving space for receiving the optical assembly 30, the position sensing device 40, and the display device 50. In at least one embodiment of the present invention, the upper case 10 and the lower case 20 are fixed to be one body by screw locking.

The lower case 20 includes a housing 21, a bottom plate 23, a side plate 24, and a main plate 25. The housing 21 has a substantially quadrilateral shape and is defined by three trapezoidal plate bodies 212 and a rectangular plate body 214. The rectangular plate body 214 is disposed between the two oppositely disposed trapezoidal plate bodies 212. The rectangular plate 214 is further provided with a heat dissipation structure (not shown), at least one interface (not shown), and a plurality of buttons (not shown). The bottom plate 23 is used for carrying the side plate 24 and the display device 50. The bottom plate 23 has a substantially rectangular plate shape. The side plates 24 are vertically disposed on the edge of the bottom plate 23, and are disposed adjacent to the rectangular plate body 214. The side plate 24 has a substantially L-shaped cross section, and an opening direction thereof is opposite to the rectangular plate body 214. The main plate 25 is fastened to the side plate 24 by screws (not shown). The main board 25 is electrically connected to the positioning sensing device 40 and the display device 50 through a connection line (not shown), and is configured to perform data communication with the positioning sensing device 40 and the display device 50, so as to receive the input signal identified by the positioning sensing device 40 and control the display device 50 to display.

Please refer to fig. 4, which is a schematic diagram of an optical path of the input terminal apparatus 1. The input terminal device 1 has an input sensing area 200 and an in-air display area 300. The light emitted from the display device 50 at one side of the optical assembly 30 is reflected by the optical assembly 30 to be displayed in an aerial display area 300 at the other side of the optical assembly 30 in an image, and the sensing light emitted from the positioning sensing device 40 forms an input sensing area 200 above the aerial display area 300. The input sensing area 200 and the in-air display area 300 are disposed parallel to each other. The input sensing region 200 is located above the overhead display region 300 as viewed in a direction perpendicular to the optical assembly 30, and the area of the overhead display region 300 is greater than the area of the input sensing region 200. The in-air display area 300 is used to display a screen presented in the display device 50.

Referring to fig. 2 and 3 again, the optical element 30 is accommodated in the upper housing 10, and is used for reflecting the light emitted by the display device 50 and then projecting the light into the air above the upper housing 10 to form the air display area 300. The optical assembly 30 includes at least one optical structure 31, at least one cover plate 32, and at least one bezel 34 arranged in an overlapping configuration. The optical structure 31 is substantially rectangular in configuration. In at least one embodiment of the present invention, the optical structure 31 comprises at least one layer of equivalent negative index flat lenses. For example, the optical structure 31 may include two transparent substrates and a first and second array of optical waveguides between the two transparent substrates. The first optical waveguide array and the second optical waveguide array are tightly attached to each other on the same plane and are orthogonally arranged. The transparent substrate has two optical faces. The transparent substrate has a transmittance of 90% to 100% for light having a wavelength of 390nm to 760 nm. The material of the transparent substrate may be at least one of glass, plastic, polymer, and acrylic for protecting the first and second optical waveguide arrays and for filtering out unnecessary light. It should be noted that, if the strength of the first optical waveguide array and the second optical waveguide array after close and orthogonal bonding is sufficient, or the installation environment has a thickness limitation, only one transparent substrate may be arranged or the transparent substrate may not be arranged at all. The first optical waveguide array and the second optical waveguide array are composed of a plurality of reflecting units with rectangular cross sections. The length of each reflecting unit is limited by the peripheral size of the optical waveguide array, so that the reflecting units are different in length. The extending direction of the reflecting unit in the first optical waveguide array and the extending direction of the reflecting unit in the second optical waveguide array are perpendicular to each other. That is, the reflection units in the first optical waveguide array and the second optical waveguide array are orthogonally arranged, so that light beams in orthogonal directions are converged at one point, and the object image planes (the light source side and the imaging side) are ensured to be symmetrical relative to the flat lens, an equivalent negative refraction phenomenon is generated, and aerial imaging is realized. And a reflecting film is arranged on one side or two sides of the reflecting unit. Specifically, in the arrangement direction of the optical waveguide array, the two sides of each reflection unit are plated with the reflection film, and the material of the reflection film may be a metal material such as aluminum, silver, or other non-metal compound material for realizing total reflection. The reflecting film is used for preventing light rays from entering the adjacent first optical waveguide array or the second optical waveguide array due to no total reflection to form stray light to influence imaging. Alternatively, each of the reflective units may also have a dielectric film (not shown) added on the reflective film. The dielectric film functions to improve light reflectance.

The specific imaging principle of the optical structure 31 is as follows:

on the micrometer scale, a mutually orthogonal double-layer waveguide array structure is used for orthogonal decomposition of an arbitrary optical signal. The optical signal emitted by the display device 50 is projected on the first optical waveguide array as an original signal, a rectangular coordinate system is established for an x-axis by taking the projection point of the original signal as an origin and being perpendicular to the first optical waveguide array, and the original signal is decomposed into two paths of mutually orthogonal signals of a signal positioned on the x-axis and a signal positioned on a y-axis in the rectangular coordinate system. When the signal of the X-axis passes through the first optical waveguide array, the signal is totally reflected on the surface of the reflecting film according to the reflecting angle which is the same as the incident angle. At this time, the Y-axis signal remains parallel to the first optical waveguide array, and after passing through the first optical waveguide array, the total reflection is performed on the surface of the reflective film on the surface of the second optical waveguide array at the same reflection angle as the incident angle, and the reflected optical signal composed of the reflected Y-axis signal and the X-axis signal is mirror-symmetric to the original optical signal. Therefore, the light rays in any direction can realize mirror symmetry through the optical structure 31, the divergent light of any light source can be converged into a floating real image again at a symmetrical position through the optical structure 31, the imaging distance of the floating real image is the same as the distance from the optical structure 31 to the image source, namely the display device 50, the floating real image is imaged at equal distance, and the floating real image is positioned in the air without a specific carrier but directly presents a real image in the air. Therefore, the image in the space seen by the user is the image emitted by the display device 50.

The cover plate 32 is a rectangular structure, and has a length and a width larger than those of the optical structure 31. The cover plate 32 and the optical structure 31 are tightly attached together, and are attached to the lower surface of the frame 34 opposite to the optical structure 31. The cover plate 32 serves to prevent dust from entering the inside of the upper case 10. In at least one embodiment of the present invention, the cover plate 32 is tempered glass. The bezel 34 is a generally rectangular frame. The inner edge of the rim 34 partially overlaps the outer edge of the cover 32, and the overlapping portions are integrally bonded. The staggered part of the frame 34 and the cover plate 32 is abutted against the upper shell 10. The frame 34 is detachably fixed to the upper case 10. In at least one embodiment of the present invention, the frame 34 is plain glass. In other embodiments, the frame 34 may be made of other materials.

The position sensing device 40 is used for emitting sensing light and forming the input sensing area 200 above the overhead display area 300. When a target object exists in the input sensing area 200, the positioning sensing device 40 receives the reflected light of the target object and generates a sensing signal to identify the use status of the user. In at least one embodiment of the present invention, the positioning sensing device 40 uses infrared light as sensing light, and the target object may be a finger or other biological structure. The positioning sensing device 40 is disposed adjacent to the optical assembly 30 and above the display device 50.

The position sensing device 40 includes a sensing bracket 41 and a sensing structure 43 (see fig. 3). The sensing bracket 41 is disposed between the optical structure 31 and the sidewall of the upper case 10. The sensing holder 41 is used for accommodating the sensing structure 43. Referring to fig. 5, the sensing bracket 41 includes a connecting portion 412 and an accommodating portion 413. The connecting portion 412 is used to position the accommodating portion 413 in the upper housing 10, so that the sensing structure 43 and the optical structure 31 are disposed in an inclined manner. The connecting portion 412 has a hollow structure. In at least one embodiment of the present invention, the cross-section of the connecting portion 412 is substantially a right triangle. The receiving portion 413 is configured to receive the sensing structure 43. The receiving portion 413 has a substantially U-shaped cross section. The opening of the receiving portion 413 faces the optical structure 31. The receiving portion 413 is formed by extending an oblique edge of the connecting portion 412.

The sensing structure 43 is used for emitting the sensing light. The sensing structure 43 has an exit face E (shown in fig. 4). Each of the sensing structures 43 transmits sensing light through the exit surface E and receives light reflected by an object located in the input sensing region 200. The sensing structure 43 includes at least one first sensing structure 43a and one second sensing structure 43b. The first sensing structure 43a is used for recognizing a touch operation of a user in the input sensing area 200. The second sensing structure 43b is used for identifying the touch position of the user in the input sensing area 200. The main board 25 determines a travel depth in the vertical direction of the input sensing area 200 according to the sensing signals generated by the first sensing structures 43a and the second sensing structures 43b, and identifies a touch position in the input sensing area 200 according to the sensing signals of the second sensing structures 43b, so as to implement three-dimensional touch sensing.

Implementation mode one

Please refer to fig. 4 and 5, which are partially exploded views of the position sensing device 40a along another angle according to the first embodiment. In the first embodiment of the present invention, the positioning sensing device 40a includes two sensing structures 43. Wherein the sensing structure 43 located above serves as the first sensing structure 43a, and the first sensing structure 43a forms a first sub-region 200a above the overhead display area 300. The sensing structure 43 located below serves as the second sensing structure 43b, and the second sensing structure 43b forms a second sub-region 200b between the aerial display region 300 and the first sub-region 200a. The second sub-area 200b is close to the aerial display region 300 and the first sub-area 200a is distant from the aerial display region 300. The first sensing structure 43a and the second sensing structure 43b are disposed in parallel with each other.

Please refer to fig. 6, which is a partially exploded view of the second sensing structure 43b. The first sensing structure 43a and the second sensing structure 43b have the same structure. The second sensing structure 43b is taken as an example for explanation. The second sensing structure 43b includes a substrate 430, a sensor 431, and a lens portion 432. The substrate 430 is a substantially rectangular plate. The substrate 430 is used for carrying the sensor 431. The sensor 431 is disposed at the same size as the substrate 430. Referring to fig. 7, the sensor 431 includes a plurality of receiving units 4311 and a plurality of transmitting units 4312. The receiving units 4311 and the transmitting units 4312 are alternately disposed on the substrate 430 at first intervals. The emitting unit 4312 is used for emitting sensing light. The receiving unit 4311 is configured to receive the reflected light and generate the sensing signal. The lens part 432 converts the sensing light entering in the direction parallel to the exit surface E into the sensing light exiting through the exit surface E in the direction perpendicular to the exit surface E, and collimates the sensing light. The lens portion 432 includes a first lens 4321 and a plurality of cylindrical lenses 4324. The first lens 4321 is substantially T-shaped in cross section. The first lens 4321 is disposed opposite to the sensor 431. The first lens 4321 converts the sensing light emitted from the emitting unit 4312 along a first direction X into a sensing light emitted along a second direction Y perpendicular to the first direction X, and emits the sensing light to the cylindrical lens 4324. A plurality of the cylindrical lenses 4324 are disposed in a coplanar manner and are placed above the first lens 4321. In the second direction Y, the cylindrical lens 4324 overlaps the sensor 431. The cylindrical lens 4324 has a substantially hat-shaped cross-section. The light entering the cylindrical lens 4324 forms the first sub-area 200a above the aerial display area 300 by the exit surface E. As shown in fig. 7, in the second direction Y, the axial direction of the cylindrical lens 4324 coincides with the axial direction of the transmitting unit 4312, and the axial direction of the receiving unit 4311 is disposed at equal intervals from the central axes of two adjacent cylindrical lenses 4324.

When the position sensing device 40 performs touch sensing, the first sensing structure 43a and the second sensing structure 43b emit sensing light to form the first sub-area 200a and the second sub-area 200b above the position sensing device 40 a. When the user touches or clicks the air display area 300, the sensing light passes through the first sub-area 200a and the second sub-area 200b, and the emitted sensing light is reflected and received by the first sensing structure 43a and the second sensing structure 43b and converted into a sensing signal. The main board 25 determines the use status of the user according to the sensing signals generated by the first sensing structure 43a and the second sensing structure 43b. When the main board 25 receives only the sensing signal output by the first sensing structure 43a, the main board 25 recognizes that the usage state is a pre-touch state. When the usage state is the pre-touch state, it indicates that the user has not touched the in-air display area 300. When the main board 25 simultaneously receives the sensing signals output by the first sensing structure 43a and the second sensing structure 43b, the main board 25 recognizes the use state as a touch input state. When the use state is a touch input state, it indicates that the user has touched the in-air display area 300. Further, the main board 25 may also generate different control signals to the display device 50 according to different use states, so as to control the in-air display area 300 to change synchronously. For example, when the usage state is the touch input state, the main board 25 generates a control signal to make the display image at the position corresponding to the second sensing structure 43b generate a shake, a highlight, a flicker, etc., but is not limited thereto. In other embodiments, the control signal may also control an audio device to output an alert tone, or control a vibration device to output a vibration at a different frequency.

Please refer to fig. 8, which is a schematic diagram of driving waveforms of the transmitting unit 4312 in the first sensing structure 43a and the transmitting unit 4312 in the second sensing structure 43b. The emitting unit 4312 in the first sensing structure 43a emits light under the driving of a driving signal with a first pulse frequency, and the emitting unit 4312 in the second sensing structure 43b emits light under the driving of a driving signal with a second pulse frequency. Wherein the first pulse frequency is greater than the second pulse frequency. The main board 25 further identifies the sensing signals of the first sensing structure 43a and the second sensing structure 43b according to the frequency of the received sensing signals.

Referring to fig. 2 and fig. 3 again, the display device 50 is used for displaying an input interface. The display device 50 is accommodated in the lower case 20 and is disposed to be inclined with respect to the optical assembly 30. The display device 50 is supported by the base plate 23. The display device 50 includes a display support 51 and a display structure 52. The display bracket 51 includes a limiting portion 512 and a bearing portion 513. The cross section of the limiting portion 512 is substantially L-shaped, and the opening direction faces the display structure 52. The position limiting portion 512 is used for limiting the position of the display structure 52 on the bearing portion 513 and preventing the display structure 52 from sliding toward the direction close to the bottom plate 23. The supporting portion 513 is locked and fixed on the bottom plate 23. The bearing part 513 is used for placing the display structure 52 and the bottom plate 23 in the lower housing 20 at a predetermined angle, and the display plane of the display structure 52 is disposed opposite to the optical structure 31. In at least one embodiment of the invention, the predetermined angle is an acute angle. The supporting portion 513 is a hollow structure, and the cross section of the supporting portion is substantially an obtuse triangle. The display surface of the display structure 52 is arranged opposite to the optical structure 31. The display structure 52 is fixed on the display bracket 51 in a snap fit manner. In at least one embodiment of the present invention, the display structure 52 may be various display structures such as, but not limited to, a liquid crystal display, an Organic Light Emitting Diode (OLED) display, and an electrophoretic display. The display structure 52 is used for displaying the input interface. In at least one embodiment of the present invention, the input interface may be a password input interface, may also be a virtual keyboard interface, may also be a demonstration video image for operation, and the like, but is not limited thereto.

Second embodiment

Please refer to fig. 9, which is a schematic perspective view of the positioning sensing device 40b according to the second embodiment of the present invention. The positioning sensing device 40b of the second embodiment has substantially the same structure as the positioning sensing device 40a of the first embodiment, and elements having the same functions are not repeated herein. That is, the description of the positioning sensing device 40a of the first embodiment can be basically applied to the positioning sensing device 40b of the second embodiment, with the main difference: the position sensing device 40b comprises three of the sensing structures 43. The middle sensing structure 43 serves as the second sensing structure 43b, and the other two sensing structures 43 serve as the first sensing structures 43a/43c. The first sensing structure 43c is used to improve the sensing of the depth of travel of the positioning sensing device 40b in a direction perpendicular to the input sensing area 200.

When the position sensing device 40b performs touch sensing, the first sensing structures 43a/43c and the second sensing structures 43b emit sensing light to form the first sub-area 200a, the second sub-area 200b and the third sub-area 200c above the position sensing device 40a (as shown in fig. 10). The first sensing structure 43a/43c and the second sensing structure 43b receive the reflected light and convert the reflected light into a sensing signal. When the user touches or clicks the over-the-air display area 300, the sensing light emitted through the first sub-area 200a, the second sub-area 200b and the third sub-area 200c is reflected and received by the first sensing structures 43a/43c and the second sensing structures 43b and converted into sensing signals. The main board 25 determines the use status of the user according to the sensing signals generated by the first sensing structures 43a/43c and the second sensing structures 43b. When the main board 25 receives only the sensing signal of the first sensing structure 43a located above, the main board 25 recognizes that the use state is the pre-touch state. When the usage state is the pre-touch state, it indicates that the user has not touched the in-air display area 300. When the main board 25 receives the sensing signals of the first sensing structure 43a and the second sensing structure 43b located above, the main board 25 recognizes the use state as a touch input state. When the use state is a touch input state, it indicates that the user touches the in-air display area 300. When the main board 25 receives the sensing signals of the two first sensing structures 43a/43c and the second sensing structure 43b, the main board 25 identifies that the use state is a false touch prompt state. When the using state is the false touch prompting state, that is, the main board 25 generates a control signal to prompt that the touch depth of the user is too deep, a plurality of touched positions which are touched by mistake are recognized in the second sub-area 200b.

Third embodiment

Referring to fig. 5 again, the positioning sensing device 40 of the third embodiment has a structure substantially the same as that of the positioning sensing device 40a of the first embodiment, and elements having the same functions are not repeated herein. That is, the description of the positioning sensing device 40a described in the first embodiment can be basically applied to the positioning sensing device 40 of the third embodiment, with the main difference that: the first sensing structure 43a does not have the lens portion 432. That is, the first sensing structure 43a includes only the substrate 430 and the sensor 431.

Since the first sensing structure 43a is only used for sensing whether a touch operation occurs, and no specific touch position is required to be sensed, the light emitted from the emitting unit 4312 in the first sensing structure 43a does not need to be collimated, and therefore, the lens portion 432 in the first sensing structure 43a is removed. Meanwhile, when no specific position sensing is required, the number of the transmitting units 4312 and the receiving units 4311 and the interval therebetween may be further adjusted to reduce the cost. Referring to fig. 11, in the third embodiment, the transmitting units 4312 and the receiving units 4311 may be alternately arranged at second intervals D2. Wherein the second interval D2 is greater than the first interval D1.

Fourth embodiment

Please refer to fig. 10 again, which is a schematic perspective view of the positioning sensing device 40 according to the fourth embodiment of the present invention. The positioning sensing device 40b of the fourth embodiment has substantially the same structure as the positioning sensing device 40b of the second embodiment, and elements having the same functions are not repeated herein. That is, the description of the positioning sensing device 40b described in the second embodiment is basically applicable to the positioning sensing device 40 of the fourth embodiment, and the main difference therebetween is that: the first sensing structure 43a/43c does not have the lens portion 432. That is, the first sensing structure 43a/43c includes only the substrate 430 and the sensor 431. The first sensing structure 43c is used to improve the sensing of the depth of travel of the positioning sensing device 40b in the vertical direction of the input sensing region 200.

Since the first sensing structures 43a/43c are only used for sensing whether a touch operation occurs, and no specific touch position is required to be sensed, the light emitted from the emitting unit 4312 in the first sensing structures 43a/43c does not need to be collimated, and therefore, the lens part 432 in the first sensing structures 43a/43c is removed. Meanwhile, when sensing of a specific position is not required, the number of the transmitting units 4312 and the receiving units 4311 and the interval therebetween may be further adjusted to reduce the cost. Referring to fig. 11, in the third embodiment, the transmitting units 4312 and the receiving units 4311 may be alternately arranged at second intervals D2. Wherein the second interval D2 is greater than the first interval D1.

In other embodiments, the positioning sensing device 40 can also adjust the number of the sensing structures 43 according to the requirement, for example, 4 sensing structures 43 are adopted.

The positioning sensing device 40 with the above structure realizes three-dimensional detection by providing at least one first sensing structure 43a and one second sensing structure 43b, determining a travel depth in a vertical direction of the input sensing region 200 according to sensing signals of the first sensing structure 43a and the second sensing structure 43b, and determining a position in the input sensing region 200 according to sensing signals of the second sensing structure 43b. Meanwhile, the use states of the user, including the pre-touch state, the touch input state, the false touch prompt state and the like, can be identified according to different combinations of the sensing signals of the first sensing structure 43a and the second sensing structure 43b, and the display images in the air display area 300 are controlled to be synchronously changed according to different use states, so as to prompt the user, thereby improving the user experience in the human-computer interaction process of the input terminal device 1. Meanwhile, the sensing light of the emitting unit 4312 is collimated by using the lens part 432.

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A positioning sensing device is applied to input terminal equipment with an aerial display area; the positioning sensing device is arranged in the input terminal equipment, and sensing light rays emitted by the positioning sensing device form an input sensing area above the air display area; wherein the position and depth of travel of the position sensing device for touch input operations within the input sensing region; the positioning sensing device comprises at least one first sensing structure and one second sensing structure which are arranged in parallel; the at least one first sensing structure and the second sensing structure are electrically connected with a main board in the input terminal equipment; at least one of the first sensing structures is located above the second sensing structure; the first sensing structure and the second sensing structure generate sensing signals when sensing input operation exists in the input sensing region; the main board receives and judges the travel depth in the vertical direction of the input sensing area according to the sensing signal of each first sensing structure and each second sensing structure, and identifies the touch position in the input sensing area according to the sensing signal of each second sensing structure so as to realize three-dimensional sensing of touch operation.

2. The position sensing device as recited in claim 1, wherein said position sensing device has one of said first sensing structures; sensing light rays emitted by the first sensing structure form a first sub-area above the aerial display area; the sensing light rays emitted by the second sensing structure form a second sub-area between the aerial display area and the first sub-area; the first sub-region and the second sub-region are arranged in parallel, and the first sensing structure and the second sensing structure are parallel to each other; the first sub-region is located above the second sub-region; when only the sensing signal of the first sensing structure is received, the mainboard identifies that the use state of a user is a pre-touch state; when sensing signals of the first sensing structure and the second sensing structure are received at the same time, the main board identifies the use state as a touch input state.

3. The positioning sensing device of claim 2, wherein the first sensing structure and the second sensing structure each comprise a substrate, a lens portion, a plurality of transmitting units, and a plurality of receiving units; two adjacent transmitting units and two adjacent receiving units are alternately arranged on the substrate at first intervals.

4. The position sensing device of claim 2, wherein the second sensing structure comprises a substrate, a lens portion, a plurality of transmitting units, and a plurality of receiving units; in the second sensing structure, two adjacent transmitting units and two adjacent receiving units are alternately arranged on the corresponding substrates at first intervals; the first sensing structure consists of a substrate, a plurality of transmitting units and a plurality of receiving units; in the first sensing structure, two adjacent transmitting units and two adjacent receiving units are alternately arranged on the substrate at second intervals; wherein the second spacing is greater than the first spacing.

5. The position sensing device as recited in claim 1, further comprising two of said first sensing structures; the two first sensing structures clamp the second sensing structure; sensing light rays emitted by each first sensing structure form a first sub-area above the aerial display area; the sensing light rays emitted by the second sensing structure form a second sub-area above the aerial display area; the two first sub-areas clamp the second sub-area in the first sub-area and are parallel to each other; the first and second sub-regions are further mutually parallel with the first and second sensing structures; when only the sensing signal of the first sensing structure positioned above is received, the mainboard identifies that the use state of a user is a pre-touch state; when sensing signals of the first sensing structure and the second sensing structure which are positioned above are received, the mainboard identifies the use state as a touch input state; when sensing signals of the two first sensing structures and the two second sensing structures are received, the mainboard identifies that the use state is a false touch prompt state.

6. The positioning sensing device of claim 5, wherein each of the first sensing structure and the second sensing structure comprises a substrate, one lens portion, a plurality of transmitting units, and a plurality of receiving units; the transmitting units and the receiving units are alternately disposed on the substrate at first intervals.

7. The position sensing device of claim 5, wherein the second sensing structure comprises a substrate, a lens portion, a plurality of transmitting units, and a plurality of receiving units; the transmitting units and the receiving units in the second sensing structures are alternately arranged on the corresponding substrates at first intervals; the first sensing structure is composed of a substrate, a plurality of transmitting units and a plurality of receiving units; the transmitting units and the receiving units in the first sensing structure are alternately arranged on the substrate at second intervals; wherein the second spacing is greater than the first spacing.

8. The position sensing device of claim 1, wherein the first sensing structure emits sensing light at a first pulse frequency; the second sensing structure emits sensing light at a second pulse frequency; wherein the first pulse frequency is greater than the second pulse frequency; the main board distinguishes the sensing signals of the first sensing structure and the second sensing structure according to the frequency of the received sensing signals.

9. The position sensing device of any of claims 3 to 4 and 7 to 8, wherein the lens portion comprises a plurality of lens structures; the lens structures are arranged in a straight line; the central axis of the transmitting unit is overlapped with the central axis of the lens part, and the central axis of the receiving unit is arranged at equal intervals with the central axes of the two adjacent lens structures.

10. An input terminal device comprises an upper shell, a lower shell which is fixedly clamped with the upper shell, an optical assembly, a main board, a positioning sensing device and a display device; the optical assembly and the positioning sensing device are contained in the upper shell, and the main board and the display device are contained in the lower shell; the optical assembly refracts the light emitted by the display device to the upper part of the input terminal equipment to form an aerial display area; the positioning sensing device according to any one of claims 1 to 9 is adopted as the positioning sensing device.

11. The input terminal device as recited in claim 10, wherein the main board is further configured to generate a corresponding control signal according to the identified use status to control the display device to adjust the display image in the air display area.