Conference machine bilateral infrared touch system

Abstract

The application discloses a conference machine bilateral infrared touch system, which comprises a transmitting single infrared tube array, a receiving single infrared tube array and an infrared precise reflection layer. The transmitting single infrared tube array is used for transmitting infrared rays by triggering laser to excite infrared rays according to a set angle of inclination, and the infrared rays are irradiated on the receiving single infrared tube and the infrared precise reflection layer. The receiving single infrared tube array is used for receiving the infrared rays transmitted by the transmitting single infrared tube or receiving cross-reflection infrared rays reflected by the infrared precise reflection layer, and sensing the cross-reflection infrared signals. The transmitting single infrared tube of the bilateral frame is in cross-corresponding relationship with the corresponding receiving single infrared tube. The infrared precise reflection layer is used for receiving the single infrared tube fault or the infrared touch cross-two-side mode, and the multiple light cross-reflection infrared rays are cross-reflected to the corresponding receiving single infrared tube to determine the touch position. The bilateral infrared touch PCB group is used for acquiring the accurate position of the infrared touch of the conference machine screen by using time division multiplexing bidirectional scanning, and the cross-transmission interference is suppressed to reduce the error rate of the cross mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control of photoelectric information processing of precision equipment, and more particularly to a conference machine double-sided infrared touch control system. BACKGROUND

[0002] At present, the existing infrared touch frame is four touch PCB boards, which has a complex structure, high hardware cost, poor maintenance convenience, low processing efficiency caused by signal redundancy, and a thick appearance of the whole machine. The root cause of the existing technical problems lies in excessive dependence on four-side physical layout to realize signal cross coverage. This scheme is reasonable in early large-size touch equipment, but with the development of conference machines towards ultra-thin, low-cost and high-reliability, the hardware redundancy and design defects of the four-side structure become more prominent. Therefore, a new type of infrared touch system is needed to reduce cost and simplify structure under the premise of ensuring touch performance, which is widely used in conference and education fields to solve key technical problems. Therefore, it is necessary to propose a conference machine double-sided infrared touch control system to at least partially solve the problems in the prior art. SUMMARY

[0003] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the specific embodiment section. The summary section of the present application does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0004] To at least partially solve the above problems, the present application provides a conference machine double-sided infrared touch control system, comprising:

[0005] The emitting single infrared tube array is used for emitting infrared rays by infrared trigger laser excitation according to the set angle of light path, and irradiating the opposite receiving single infrared tube and the infrared precision reflection layer by emitting infrared rays;

[0006] The receiving single infrared tube array is used for receiving the infrared rays emitted by the corresponding emitting single infrared tube, or receiving the cross-reflected infrared rays reflected by the infrared precision reflection layer, and sensing the cross-reflected infrared signal. The emitting single infrared tube of the double-sided frame and the corresponding receiving single infrared tube have a cross-corresponding relationship;

[0007] The infrared light splitting precision reflection layer is used for receiving the single infrared tube fault or the infrared touch cross two sides, and the multi-channel light splitting cross-reflected infrared rays are reflected to the opposite corresponding receiving single infrared tube to determine the touch position;

[0008] The double-sided infrared touch PCB group is used for acquiring the precise position of the infrared touch of the conference machine screen by using time-division multiplexing bidirectional scanning. The double-sided infrared touch PCB group includes an upper infrared touch PCB and a lower infrared touch PCB arranged in a landscape mode and a portrait mode rotated by 90 degrees, respectively. Cross-transmission interference is suppressed, and the cross mechanism error rate is reduced.

[0009] Preferably, the transmitting single infrared tube array includes a first group of transmitting single infrared tubes, a second group of transmitting single infrared tubes, and an mth group of transmitting single infrared tubes.

[0010] The first group of transmitting single infrared tubes emits a first group of infrared rays, the second group of transmitting single infrared tubes emits a second group of infrared rays, and the mth group of transmitting single infrared tubes emits an mth group of infrared rays. The first group of infrared rays is irradiated to the first group of receiving single infrared tubes and the infrared light-splitting precision reflection layer, and the second group of infrared rays to the mth group of infrared rays are irradiated to the second group of receiving single infrared tubes to the mth group of receiving single infrared tubes, respectively. When the receiving single infrared tube fails or the infrared touch is in a cross mode, the multi-channel light-splitting cross reflection infrared rays are reflected to the corresponding receiving single infrared tube on the opposite side to determine the touch position.

[0011] Preferably, the receiving single infrared tube array includes a first group of receiving single infrared tubes, a second group of receiving single infrared tubes, and an nth group of receiving single infrared tubes. {1, 2,..., m} and {1, 2,..., n} are integer sets, and {1, 2,..., m} is a subset of {1, 2,..., n}. The first group of transmitting single infrared tubes and the first group of receiving single infrared tubes, the second group of transmitting single infrared tubes and the second group of receiving single infrared tubes, and the mth group of transmitting single infrared tubes and the mth group of receiving single infrared tubes form infrared transmitting-receiving cross sensing pairs, respectively.

[0012] Preferably, the infrared light-splitting precision reflection layer includes an infrared ray light-splitting refraction group, an infrared ray straight light reflection group, an infrared ray light-splitting reflection group, and a light path cross anti-interference group. The infrared ray light-splitting refraction group, the infrared ray straight light reflection group, the infrared ray light-splitting reflection group, and the light path cross anti-interference group are formed into a semi-reflective light-splitting layer, a transparent light-transmitting layer, or a mirror surface by precise etching, polishing, and coating according to a set shape structure.

[0013] Preferably, the infrared ray light-splitting refraction group includes a first light-splitting surface, a light-splitting transparent intermediate body, and a second refraction surface.

[0014] The first light-splitting surface is a semi-reflective light-splitting layer. The semi-reflective light-splitting layer of the first light-splitting surface divides the emitted infrared rays into first light-splitting surface reflection laser and first light-splitting surface refraction laser.

[0015] The first light-splitting surface reflection laser is reflected by the first inclined surface reflection group to form a first group of infrared ray reflection lines. The first group of infrared ray reflection lines is irradiated to the second group of receiving single infrared tubes of the receiving single infrared tube array.

[0016] The first splitting surface refracts the laser light through the splitting transparent intermediate optical path to the second refracting surface; the second refracting surface refracts to the second inclined surface reflection group of the infrared ray splitting reflection group; the second inclined surface reflection group reflects to the third inclined surface reflection group of the infrared ray splitting reflection group to form the first group of infrared ray splitting light by twice reflection; and the first group of infrared ray splitting light is reflected to the first group of receiving single infrared tubes of the receiving single infrared tube array.

[0017] The first group of infrared ray reflection light and the second group of infrared ray splitting light intersect or are parallel, and are reflected to the first group of receiving single infrared tubes of the receiving single infrared tube array.

[0018] The second group of infrared ray reflection light and the third group of infrared ray splitting light intersect or are parallel, and are reflected to the second group of receiving single infrared tubes of the receiving single infrared tube array.

[0019] Preferably, the infrared ray straight light reflection group comprises: a first inclined reflection surface, and a reflection surface attached etching block; the first inclined reflection surface is arranged as a mirror surface, and is attached to the inclined surface of the reflection surface attached etching block; the first inclined reflection surface reflects the first splitting surface refracted laser light to form the first group of infrared ray reflection light.

[0020] Preferably, the infrared ray splitting reflection group comprises: a second inclined surface reflection group and a third inclined surface reflection group.

[0021] The right-angle mirror surface of the second inclined surface reflection group is perpendicular to the second refracting surface, and the right-angle mirror surface of the second inclined surface reflection group reflects the first splitting surface refracted laser light; another right-angle surface of the second inclined surface reflection group is attached to the second refracting surface.

[0022] The inclined surface of the third inclined surface reflection group is attached to the edge of the infrared touch frame; the first right-angle surface of the third inclined surface reflection group is perpendicular to the inclined surface of the second inclined surface reflection group; and the second right-angle surface of the third inclined surface reflection group is perpendicular to the inclined surface of the second inclined surface reflection group.

[0023] The first splitting surface refracted laser light is twice reflected to form the first group of infrared ray splitting light.

[0024] Preferably, the light path intersection anti-interference group comprises: a first anti-interference reflection surface and a second anti-interference reflection surface; the first anti-interference reflection surface and the second anti-interference reflection surface are attached back to back, and respectively form a full reflection inclined surface with the first coherent light and the second coherent light; the first anti-interference reflection surface and the first coherent light form first full reflection light through the first full reflection inclined surface; the second anti-interference reflection surface and the second coherent light form second full reflection light through the second full reflection inclined surface; and the mutually interfering first coherent light and the second coherent light are eliminated interference full reflection to the receiving single infrared tube array.

[0025] Preferably, the double-sided infrared touch PCB group comprises:

[0026] The time division multiplexing bidirectional scanning control module acquires the precise position of the infrared touch of the conference machine screen according to the cross reflection infrared signal by using time division multiplexing bidirectional scanning.

[0027] The anti-interference and fault-tolerant cross module uses the anti-interference and fault-tolerant mechanism to suppress cross transmission interference and reduce the cross mechanism error rate.

[0028] Preferably, the time division multiplexing bidirectional scanning control module comprises:

[0029] The upper infrared touch panel is arranged in cross arrangement with the first single infrared receiving and sensing array of the lower infrared touch panel.

[0030] The lower infrared touch panel is arranged in cross arrangement with the second single infrared receiving and sensing array of the upper infrared touch panel. When the double-side infrared touch PCB corresponds to the horizontal screen, one side infrared touch PCB is arranged in the upper and lower frames, respectively. When the double-side infrared touch PCB corresponds to the vertical screen, one side infrared touch PCB is arranged in the upper and lower frames, respectively, after the vertical screen is rotated by 90 degrees along the vertical direction of the plane.

[0031] The technical scheme of the present application has the following advantages:

[0032] The application provides a conference machine bilateral infrared touch system, comprising: a transmitting single infrared tube array, which is used for exciting infrared rays by infrared trigger laser and transmitting the infrared rays according to a set angle of inclination; and irradiating the opposite receiving single infrared tube and an infrared precision reflection layer by the transmitted infrared rays; a receiving single infrared tube array, which is used for receiving the infrared rays transmitted by the corresponding transmitting single infrared tube or receiving the cross-reflected infrared rays reflected by the infrared precision reflection layer, and sensing the cross-reflected infrared signals; the transmitting single infrared tube of the bilateral frame and the corresponding receiving single infrared tube are in a cross-corresponding relationship; an infrared light splitting precision reflection layer, which is used for splitting the cross-reflected infrared rays to the opposite corresponding receiving single infrared tube when the receiving single infrared tube fails or the infrared touch is in a cross-two-side mode, and determining the touch position; a bilateral infrared touch PCB group, which is used for acquiring the accurate position of the infrared touch of the conference machine screen by using time division multiplexing bidirectional scanning; the bilateral infrared touch PCB group comprises an upper infrared touch PCB and a lower infrared touch PCB arranged in a horizontal screen mode and a vertical screen mode rotated by 90 degrees; cross-transmission interference is suppressed, and the cross mechanism error rate is reduced; the core innovation of the overall structure design of the application lies in that the transmitting tube and the receiving tube of the upper and lower frames are in a cross-corresponding relationship; the cross mechanism core components and the connection relationship are strengthened; the cross-transmission logic is highlighted in the working process and the signal interaction process; the cross-transmission anti-attenuation mechanism is realized by the innovation points and advantages; there is no blind area cross coverage; the hardware cost and performance are balanced; the bilateral layout architecture is innovated; the time division multiplexing bidirectional scanning technology is used; the anti-interference and fault tolerance mechanism is used; the hardware structure protection points are the bilateral frame module touch layout; the development of the bilateral infrared touch PCB can effectively reduce the installation process and cost, and make the whole machine appearance more slim; the bilateral infrared touch PCB realizes the touch function through the upper and lower infrared touch panels by the cross arrangement mode of the transmission and reception of a single infrared tube; the OPS calculation module is used for increasing the system calculation power; the operation speed is significantly improved; and the touch control accuracy is significantly improved.

[0033] The conference machine bilateral infrared touch system, other advantages, objects and features of the application will be embodied by the following description, and will be understood by those skilled in the art through the research and practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, which together with the embodiments of the application, are used to explain the application, and do not constitute a limitation on the application. In the drawings:

[0035] Fig. 1 It is an embodiment diagram of the conference machine bilateral infrared touch system.

[0036] Fig. 2 It is an embodiment diagram of the infrared precision reflection layer of the conference machine bilateral infrared touch system.

[0037] Fig. 3 Figure 1 is a schematic diagram of an embodiment of a hardware structure of a conference machine bilateral infrared touch system according to the present application. DETAILED DESCRIPTION

[0038] The present application will be further described below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement the present application according to the description and drawings; as shown, the present application provides a conference machine bilateral infrared touch system, comprising: Figs. 1-3

[0039] The transmitting single infrared tube array is used for exciting infrared rays by infrared trigger laser, emitting infrared rays according to a set angle of inclination light path; and irradiating the opposite receiving single infrared tube and the infrared precision reflection layer by emitting infrared rays;

[0040] The receiving single infrared tube array is used for receiving infrared rays emitted by the corresponding transmitting single infrared tube, or receiving cross-reflected infrared rays reflected by the infrared precision reflection layer, and sensing the cross-reflected infrared signal; the transmitting single infrared tube of the bilateral frame and the corresponding receiving single infrared tube are in cross-corresponding relationship;

[0041] The infrared light splitting precision reflection layer is used for receiving single infrared tube failure or infrared touch cross two sides, and splitting and cross reflecting the infrared rays to the opposite corresponding receiving single infrared tube, so as to determine the touch position;

[0042] The bilateral infrared touch PCB group is used for acquiring the precise position of the infrared touch of the conference machine screen by using time division multiplexing bidirectional scanning; the bilateral infrared touch PCB group includes a horizontal screen setting and a vertical screen rotation of 90 degrees, and an upper infrared touch PCB and a lower infrared touch PCB are respectively arranged; cross-transmission interference is suppressed, and the cross mechanism error rate is reduced;

[0043] The horizontal coordinate of the touch point is determined according to the bilateral blocked receiving single infrared tube; the vertical coordinate of the touch point is determined according to the fact that the infrared rays emitted by the bilateral transmitting single infrared tube irradiate the touch point, and the reflected infrared rays of the touch point reach the receiving single infrared tube with the shortest distance, and the half of the optical path is determined.

[0044] ​The double-side infrared touch PCB set includes upper and lower infrared touch PCBs arranged in a landscape mode and a portrait mode rotated by 90 degrees, respectively; the emitting single infrared tubes of the double-side frame are in a cross corresponding relationship with the corresponding receiving single infrared tubes; the emitting single infrared tubes of the same side frame are in a spaced arrangement mode; the emitting single infrared tubes and the receiving single infrared tubes of the first side frame are in a one-to-one corresponding relationship with the receiving single infrared tubes and the emitting single infrared tubes of the second side frame, so as to inhibit cross interference and reduce cross mechanism error rate; the core innovation of the overall structure design of the application is that the cross transmitting and receiving infrared tube layout is adopted, and the emitting tubes and the receiving tubes of the upper and lower side frames are in a cross corresponding relationship in the spaced arrangement mode; the cross mechanism core components and the connection relationship are strengthened; the cross transmitting and receiving logic is highlighted in the working process and the signal interaction process; the cross transmitting and receiving anti-attenuation mechanism is realized by the innovation and advantage; there is no blind area cross coverage; the hardware cost and performance are balanced; the double-side layout architecture is innovated; the time division multiplexing bidirectional scanning technology is adopted; the anti-interference and fault tolerance mechanism is adopted; the hardware structure protection point is the double-side frame module touch layout; the development of the double-side infrared touch PCB can effectively reduce the installation process and cost, so that the whole machine appearance is more slim; the double-side infrared touch PCB realizes the touch function through the transmitting and receiving cross arrangement mode of the single infrared tube and the upper and lower infrared touch plates; the OPS calculation module is used to increase the system calculation power; the operation speed is significantly improved; and the touch control precision is significantly improved.

[0045] In one embodiment, the emitting single infrared tube array includes: a first group of emitting single infrared tubes, a second group of emitting single infrared tubes,

[0046] to an mth group of emitting single infrared tubes;

[0047] The first group of emitting single infrared tubes emits a first group of infrared rays; the second group of emitting single infrared tubes emits a second group of infrared rays; the mth group of emitting single infrared tubes emits an mth group of infrared rays; the first group of infrared rays irradiates the first group of receiving single infrared tubes and the infrared light splitting precision reflection layer, and the second group of infrared rays to the mth group of infrared rays irradiate the second group of receiving single infrared tubes to the mth group of receiving single infrared tubes, respectively; when the receiving single infrared tube fails or the infrared touch cross two sides, the multi-channel light splitting cross reflection infrared rays are reflected to the opposite corresponding receiving single infrared tubes to determine the touch position.

[0048] In one embodiment, the receiving single infrared tube array includes: a first group of receiving single infrared tubes, a second group of receiving single infrared tubes, to an nth group of receiving single infrared tubes; {1, 2,..., m} and {1, 2,..., n} are integer sets, and {1, 2,..., m} is a subset of {1, 2,..., n}; the first group of emitting single infrared tubes and the first group of receiving single infrared tubes, the second group of emitting single infrared tubes and the second group of receiving single infrared tubes, to the mth group of emitting single infrared tubes and the mth group of receiving single infrared tubes respectively constitute infrared emitting and receiving cross induction pairs.

[0049] The emitting single infrared tube and the receiving single infrared tube of the same side frame further comprise: a screen vertical parallel arrangement mode; in the screen vertical parallel arrangement mode, the emitting single infrared tube and the receiving single infrared tube of the first side frame are arranged along the screen vertical direction, and the receiving single infrared tube and the emitting single infrared tube of the second side frame are arranged along the screen vertical direction, that is, the emitting single infrared tube of the first side frame is symmetric to the emitting single infrared tube of the second side frame along the screen vertical middle line, and one-to-one corresponds to irradiate the receiving single infrared tube of the second side frame; the emitting single infrared tube of the second side frame is symmetric to the emitting single infrared tube of the first side frame along the screen vertical middle line, and one-to-one corresponds to irradiate the receiving single infrared tube of the first side frame; the arrangement density is increased, and the mutual interference and mutual disturbance are reduced.

[0050] In one embodiment, the infrared light splitting precision reflection layer comprises: an infrared ray light splitting refracting group, an infrared ray straight light reflecting group, an infrared ray light splitting reflecting group, and an optical path crossing anti-interference group; the infrared ray light splitting refracting group, the infrared ray straight light reflecting group, the infrared ray light splitting reflecting group, and the optical path crossing anti-interference group are formed into a semi-reflective light splitting layer, a transparent light transmission layer or a mirror surface by precision etching, polishing and coating according to a set shape structure; the infrared ray light splitting refracting group splits the infrared ray into multiple beams by the principle of a light splitter for multi-optical path control; the infrared ray straight light reflecting group reflects a first group of infrared rays to form a first group of infrared ray reflected light; the infrared ray light splitting reflecting group reflects a second group of infrared rays to form a second group of infrared ray reflected light; the optical path crossing anti-interference group is arranged at a mutual interference position of the infrared rays to eliminate the interference reflection of coherent light to a receiving single infrared tube array, including mirror reflection and total reflection.

[0051] In one embodiment, the infrared ray light splitting refracting group comprises: a first light splitting surface, a light splitting transparent intermediate body and a second refracting surface;

[0052] The first light splitting surface is a semi-reflective light splitting layer; the semi-reflective light splitting layer of the first light splitting surface splits the emitted infrared ray into first light splitting surface reflected laser and first light splitting surface refracted laser;

[0053] The first light splitting surface reflected laser is reflected by the first inclined surface reflecting group to form a first group of infrared ray reflected light; the first group of infrared ray reflected light irradiates to a second group of receiving single infrared tubes of the receiving single infrared tube array;

[0054] The first light splitting surface refracted laser passes through the light path of the light splitting transparent intermediate body to reach the second refracting surface; the second refracting surface is refracted to the second inclined surface reflecting group of the infrared ray light splitting reflecting group; the second inclined surface reflecting group is reflected to the third inclined surface reflecting group of the infrared ray light splitting reflecting group to form a first group of infrared ray light splitting lines by twice reflection, and the first group of infrared ray light splitting lines are reflected to a first group of receiving single infrared tubes of the receiving single infrared tube array;

[0055] The first group of infrared ray reflected light and the second group of infrared ray split light cross or are parallel, and are reflected to the first group of receiving single infrared tubes of the receiving single infrared tube array.

[0056] The second group of infrared ray reflected light and the third group of infrared ray split light cross or are parallel, and are reflected to the second group of receiving single infrared tubes of the receiving single infrared tube array.

[0057] In an embodiment, the infrared ray straight light reflection group comprises: a first inclined reflection surface, a reflection surface attached etching block; the first inclined reflection surface is arranged as a mirror surface, and is attached to an inclined surface of the reflection surface attached etching block; the first inclined reflection surface reflects the first split surface reflected laser to form the first group of infrared ray reflected light.

[0058] In an embodiment, the infrared ray split reflection group comprises: a second inclined reflection group, a third inclined reflection group;

[0059] The right angle mirror surface of the second inclined reflection group is perpendicular to the second refractive surface, and the right angle mirror surface of the second inclined reflection group reflects the first split surface refracted laser; another right angle surface of the second inclined reflection group is attached to the second refractive surface;

[0060] The inclined surface of the third inclined reflection group is attached to the edge of the infrared touch frame; the first right angle surface of the third inclined reflection group

[0061] The second split surface refracted laser is reflected to form the first group of infrared ray split light.

[0062] Preferably, the light path crossing anti-interference group comprises: a first anti-interference reflection surface, a second anti-interference reflection surface; the first anti-interference reflection surface and the second anti-interference reflection surface are attached back to back, and respectively form a total reflection inclined surface with the first coherent light and the second coherent light; the first anti-interference reflection surface and the first coherent light pass through the first total reflection inclined surface to form the first total reflection light; the second anti-interference reflection surface and the second coherent light pass through the second total reflection inclined surface to form the second total reflection light; the mutually interfering first coherent light and the second coherent light are eliminated interference and totally reflected to the receiving single infrared tube array.

[0063] In an embodiment, the double-sided infrared touch PCB group comprises:

[0064] The time division multiplexing bidirectional scanning control module acquires the precise position of the infrared touch of the conference machine screen according to the cross reflected infrared signal by using time division multiplexing bidirectional scanning.

[0065] Anti-interference fault-tolerant cross module, using anti-interference and fault-tolerant mechanism, double-sided infrared touch PCB group includes horizontal screen setting and vertical screen rotating 90 degrees, respectively setting upper infrared touch PCB and lower infrared touch PCB; cross interference is suppressed, and cross mechanism error rate is reduced; when vertical screen is applied, double-sided infrared touch PCB group is respectively located on both sides of vertical screen long frame, and touch point position amount is significantly increased.

[0066] In one embodiment, time division multiplexing bidirectional scanning control module includes:

[0067] Upper infrared touch panel is arranged as single infrared tube first sending array and lower infrared touch panel first single infrared receiving sensing array cross arrangement;

[0068] Lower infrared touch panel is arranged as single infrared tube second sending array and upper infrared touch panel second single infrared receiving sensing array cross arrangement; when double-sided infrared touch PCB corresponds to horizontal screen, one side infrared touch PCB is arranged in upper frame and lower frame respectively; when double-sided infrared touch PCB corresponds to vertical screen, one side infrared touch PCB is arranged in upper frame and lower frame respectively after vertical screen vertical direction rotates 90 degrees along plane, and double-sided infrared touch PCB respectively corresponds to left and right frames of vertical screen; when horizontal screen and vertical screen switching application is applied, through magnetic field detection module, horizontal screen or vertical screen is automatically sensed, and horizontal screen touch control or vertical screen touch control is intelligently switched; touch application scene is significantly improved, and application range is significantly increased.

[0069] The working principle and effects of the above technical solution are as follows: the transmitting single infrared tube array is used to emit infrared rays according to a set angle of light path through infrared triggering laser excitation of infrared rays; and the opposite receiving single infrared tube and the infrared precision reflection layer are irradiated by the emitted infrared rays; the receiving single infrared tube array is used to receive the infrared rays emitted by the corresponding transmitting single infrared tube or receive the cross-reflected infrared rays reflected by the infrared precision reflection layer, and induct the cross-reflected infrared signal; the transmitting single infrared tube of the double-side frame and the corresponding receiving single infrared tube are in cross-corresponding relationship; the infrared light splitting precision reflection layer is used to reflect the infrared rays to the opposite corresponding receiving single infrared tube through multi-path light splitting when the receiving single infrared tube fails or the infrared touch is in cross-two-side mode, so as to determine the touch position; the double-side infrared touch PCB group is used to obtain the accurate position of the infrared touch of the conference machine screen by using time division multiplexing bidirectional scanning; the double-side infrared touch PCB group includes an upper infrared touch PCB and a lower infrared touch PCB arranged in a horizontal screen and a vertical screen rotated by 90 degrees; cross-transmission interference is suppressed, and the cross-mechanism error rate is reduced; the core innovation of the overall structure design of the application is to adopt the cross-transmission type infrared tube layout, that is, the transmitting tube and the receiving tube of the upper and lower frames are in cross-corresponding relationship; the cross-mechanism core components and connection relationship are strengthened; the cross-transmission logic is highlighted in the working process and signal interaction process; the cross-transmission anti-attenuation mechanism is realized by the innovation and advantage; there is no blind area cross-coverage; the hardware cost and performance are balanced; the double-side layout architecture is innovated; the time division multiplexing bidirectional scanning technology is adopted; the anti-interference and fault-tolerant mechanism is adopted; the hardware structure protection points are the double-side frame module touch layout; the development of the double-side infrared touch PCB can effectively reduce the installation process and cost, and make the whole machine appearance more slim; the double-side infrared touch PCB realizes the touch function through the transmitting and receiving cross-arrangement of the single infrared tube and the upper and lower infrared touch plates; the OPS calculation module is used to increase the system calculation power; the operation speed is significantly improved; and the touch control accuracy is significantly improved.

[0070] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and equivalent scope.

Claims

1. A conference machine bilateral infrared touch system, characterized in that, The application relates to a double-side infrared touch screen, which comprises the following parts: a transmitting single infrared tube array is used for transmitting infrared rays by infrared trigger laser excitation, transmitting the infrared rays along a preset angle optical path, and irradiating the opposite receiving single infrared tube and an infrared precision reflection layer by the transmitted infrared rays; a receiving single infrared tube array is used for receiving the infrared rays transmitted by the corresponding transmitting single infrared tube, or receiving the cross-reflected infrared rays reflected by the infrared precision reflection layer, and sensing the cross-reflected infrared signals; the transmitting single infrared tubes of the double-side frame are in cross-corresponding relationship with the corresponding receiving single infrared tubes; the transmitting single infrared tubes and the receiving single infrared tubes of the same side frame are arranged in a spaced mode; an infrared light splitting precision reflection layer is used for receiving the single infrared tube failure or the infrared touch cross two side mode, and the infrared light splitting cross-reflected infrared rays are reflected to the opposite corresponding receiving single infrared tube, so that the touch position is determined; a double-side infrared touch PCB group is used for acquiring the infrared touch accurate position of the conference machine screen by using time division multiplexing bidirectional scanning; the double-side infrared touch PCB group comprises an upper infrared touch PCB and a lower infrared touch PCB arranged in a horizontal screen mode and a vertical screen mode rotated by 90 degrees; the infrared light splitting precision reflection layer comprises an infrared ray light splitting refraction group, an infrared ray straight light reflection group, an infrared ray light splitting reflection group and an optical path cross-interference group; the infrared ray light splitting refraction group, the infrared ray straight light reflection group, the infrared ray light splitting reflection group and the optical path cross-interference group are formed into a half-reflection light splitting layer, a transparent light transmission layer or a mirror surface by precision etching, polishing and coating according to a preset shape structure; the infrared ray light splitting refraction group comprises a first light splitting surface, a light splitting transparent intermediate body and a second refraction surface; the first light splitting surface is a half-reflection light splitting layer; the half-reflection light splitting layer of the first light splitting surface divides the transmitted infrared rays into first light splitting surface reflection laser and first light splitting surface refraction laser; the first light splitting surface reflection laser is reflected by the first inclined surface reflection group to form a first group of infrared ray reflection light; the first group of infrared ray reflection light is irradiated to a second group of receiving single infrared tubes of the receiving single infrared tube array; the first light splitting surface refraction laser passes through the light path of the light splitting transparent intermediate body and reaches the second refraction surface; the second refraction surface is refracted to the second inclined surface reflection group of the infrared ray light splitting reflection group; the second inclined surface reflection group is reflected to the third inclined surface reflection group of the infrared ray light splitting reflection group to form a first group of infrared ray light splitting lines by twice reflection, and the first group of infrared ray light splitting lines are reflected to a first group of receiving single infrared tubes of the receiving single infrared tube array; the first group of infrared ray reflection light and the second group of infrared ray light splitting lines are cross or parallel, and are reflected to the first group of receiving single infrared tubes of the receiving single infrared tube array; the second group of infrared ray reflection light and the third group of infrared ray light splitting lines are cross or parallel, and are reflected to a second group of receiving single infrared tubes of the receiving single infrared tube array.

2. The dual-sided infrared touch system of a conference machine according to claim 1, wherein, the transmitting single infrared tube array comprises a first group of transmitting single infrared tubes, a second group of transmitting single infrared tubes and an mth group of transmitting single infrared tubes. The first group of emitting single infrared tubes emits a first group of infrared rays; the second group of emitting single infrared tubes emits a second group of infrared rays; and the mth group of emitting single infrared tubes emits an mth group of infrared rays. The first group of infrared rays is irradiated to the first group of receiving single infrared tubes and the infrared light splitting precision reflection layer. The second group of infrared rays to the mth group of infrared rays are respectively irradiated to the second group of receiving single infrared tubes to the mth group of receiving single infrared tubes. When the receiving single infrared tube fails or the infrared touch intersects the two sides, the multi-channel light splitting intersecting reflection infrared rays are reflected to the corresponding receiving single infrared tube on the opposite side, so as to determine the touch position.

3. The dual-sided infrared touch system of claim 1, wherein, The receiving single infrared tube array includes: a first group of receiving single infrared tubes, a second group of receiving single infrared tubes, and an nth group of receiving single infrared tubes; {1, 2,..., m} and {1, 2,..., n} are integer sets, and {1, 2,..., m} is a subset of {1, 2,..., n}; the first group of emitting single infrared tubes and the first group of receiving single infrared tubes, the second group of emitting single infrared tubes and the second group of receiving single infrared tubes, and the mth group of emitting single infrared tubes and the mth group of receiving single infrared tubes respectively form infrared emitting-receiving intersecting sensing pairs.

4. The dual-sided infrared touch system of claim 1, wherein, The infrared ray straight light reflection group includes: a first inclined reflection surface, and a reflection surface attached etching block; the first inclined reflection surface is provided as a mirror surface, and is attached to the inclined surface of the reflection surface attached etching block; the first inclined reflection surface reflects the first light splitting surface refracted laser to form the first group of infrared ray reflected light.

5. The dual-sided infrared touch system of claim 1, wherein, The infrared ray light splitting reflection group includes: a second inclined surface reflection group and a third inclined surface reflection group. The right angle mirror surface of the second inclined surface reflection group is perpendicular to the second refractive surface, and the right angle mirror surface of the second inclined surface reflection group reflects the first light splitting surface refracted laser; another right angle surface of the second inclined surface reflection group is attached to the second refractive surface; The inclined surface of the third inclined surface reflection group is attached to the edge of the infrared touch frame; the first right angle surface of the third inclined surface reflection group The second light splitting surface refracted laser is reflected twice to form the first group of infrared ray light splitting lines.

6. The dual-sided infrared touch system of a conference machine according to claim 1, wherein, The light path intersecting anti-interference group includes: a first anti-interference reflection surface and a second anti-interference reflection surface; the first anti-interference reflection surface and the second anti-interference reflection surface are attached back to back, and respectively form full reflection inclined surfaces with the first coherent light and the second coherent light; the first anti-interference reflection surface and the first coherent light form the first full reflection light through the first full reflection inclined surface; the second anti-interference reflection surface and the second coherent light form the second full reflection light through the second full reflection inclined surface; the first coherent light and the second coherent light which interfere with each other are eliminated by interference full reflection to the receiving single infrared tube array.

7. The dual-sided infrared touch system of a conference machine according to claim 1, wherein, The double-sided infrared touch PCB group includes: The time division multiplexing bidirectional scanning control module acquires the precise position of the infrared touch of the conference machine screen according to the intersecting reflection infrared signal by using time division multiplexing bidirectional scanning. The anti-interference fault-tolerant suppression intersection module uses the anti-interference and fault-tolerant mechanism, and the double-sided infrared touch PCB group includes horizontal screen setting and vertical screen rotation of 90 degrees, and respectively sets the upper infrared touch PCB and the lower infrared touch PCB; the intersection transceiving interference is suppressed, and the intersection mechanism error rate is reduced.

8. The dual-sided infrared touch system of claim 7, wherein, The time division multiplexing bidirectional scanning control module includes: The upper infrared touch panel is arranged in a cross arrangement of a first sending array of single infrared tubes and a first single infrared receiving and sensing array of the lower infrared touch panel. The lower infrared touch panel is arranged in a cross arrangement of a second sending array of single infrared tubes and a second single infrared receiving and sensing array of the upper infrared touch panel; when the double-side infrared touch PCB corresponds to a horizontal screen, one side of the infrared touch PCB is arranged in the upper frame and the lower frame respectively; when the double-side infrared touch PCB corresponds to a vertical screen, one side of the infrared touch PCB is arranged in the upper frame and the lower frame respectively after the vertical screen is rotated by 90 degrees along the vertical direction of the plane; and the double-side infrared touch PCB corresponds to the left and right frames of the vertical screen respectively.

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