CN109062453B - Transmitting tube scanning structure for infrared touch screen - Google Patents
Transmitting tube scanning structure for infrared touch screen Download PDFInfo
- Publication number
- CN109062453B CN109062453B CN201810849853.0A CN201810849853A CN109062453B CN 109062453 B CN109062453 B CN 109062453B CN 201810849853 A CN201810849853 A CN 201810849853A CN 109062453 B CN109062453 B CN 109062453B
- Authority
- CN
- China
- Prior art keywords
- infrared
- controller
- touch screen
- scanning
- installation frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention relates to the technical field of mobile phone accessories, in particular to a transmitting tube scanning structure for an infrared touch screen, which comprises an installation frame, wherein two adjacent inner side walls of the installation frame are provided with infrared transmitter groups, each infrared transmitter group comprises a plurality of infrared transmitters, the other two inner side walls of the installation frame are provided with infrared receiver groups corresponding to the infrared transmitter groups, each infrared receiver group comprises a plurality of infrared receivers, a scanning device is arranged at the crossed position of the two inner side walls of the installation frame provided with the infrared transmitter groups, and each scanning device comprises a scanning infrared transmitter and a motor; the infrared scanning device further comprises a controller and a time delay module, wherein the controller is used for controlling the motor to rotate to drive the scanning infrared transmitter to transmit infrared rays to each infrared receiver. The invention provides a transmitting tube scanning structure for an infrared touch screen, and the infrared touch screen provided by the invention can solve the problems of large power consumption and short service life of an infrared transmitter after the existing infrared touch screen is started for a long time.
Description
Technical Field
The invention relates to the technical field of screen touch control, in particular to an infrared touch screen.
Background
With the increasing of multimedia information inquiry equipment, people increasingly talk about touch screens, and the touch screens have the advantages of firmness, durability, high response speed, space saving, easy communication and the like. By using the technology, the user can operate the host machine by lightly touching the icons or the characters on the computer display screen by fingers, so that the man-machine interaction is more straightforward, and the technology is greatly convenient for the user who does not know the computer operation.
According to the working principle of the touch screen and the medium for transmitting information, the touch screen is divided into four types, namely a resistance type, a capacitance induction type, an infrared type and a surface acoustic wave type. The infrared touch screen is free from current, voltage and static interference, is suitable for severe environmental conditions, and the infrared technology is the final development trend of touch screen products. The infrared touch screen is characterized in that a circuit board outer frame is arranged in front of a display in a touching mode, infrared transmitting tubes and infrared receiving tubes are arranged on four sides of the screen in a one-to-one corresponding mode, and infrared matrixes densely distributed in the X direction and the Y direction are used for detecting and positioning touch of a user. The number of tubes on the existing infrared touch screen is large, the arrangement is complex, and the requirement on precise positioning is met.
Because the infrared touch screen adopts the structural characteristics of more infrared transmitting tubes and infrared receiving tubes, when one infrared transmitting tube or infrared receiving tube breaks down, the whole infrared touch screen has defects. Because the infrared emission tube belongs to the luminescent device, can be in the state of transmission infrared ray always when the display screen normally works, long-time operation leads to the probability of breaking down very big, and in case break down will directly influence the life of whole touch-control screen.
Disclosure of Invention
The invention aims to provide a transmitting tube scanning structure for an infrared touch screen, which can solve the problems of large power consumption and short service life of an infrared transmitter after the existing infrared touch screen is started for a long time.
In order to solve the technical problem, the patent provides the following technical scheme:
a transmitting tube scanning structure for an infrared touch screen comprises an installation frame, wherein two adjacent inner side walls of the installation frame are provided with an infrared emitter group, the infrared emitter group comprises a plurality of infrared emitters, the other two inner side walls of the installation frame are provided with infrared receiver groups corresponding to the infrared emitter groups, the infrared receiver groups comprise a plurality of infrared receivers, a scanning device is arranged at the crossed position of the two inner side walls of the installation frame, which are provided with the infrared emitter groups, and the scanning device comprises a scanning infrared emitter and a motor;
the controller is used for judging whether infrared light emitted to the infrared receiver is blocked or not and judging whether touch operation exists or not according to signals of the infrared receiver opposite to the scanning infrared transmitter, the controller is used for controlling the infrared transmitter group to be opened and the time delay module to be closed when the touch operation is detected, the controller is also used for controlling the time delay module to be opened when no touch operation is detected, the time delay module sends an ending signal to the controller after the time delay of the time delay module is ended, and the controller controls the infrared transmitter group to be closed after receiving the ending signal.
According to the technical scheme, infrared light is sequentially transmitted to all infrared receivers in an infrared receiver group by controlling the rotation angle of a scanning infrared transmitter, the state of the infrared receivers is detected by a controller, if touch operation is detected, the infrared transmitter group is opened, and if touch operation is not detected, the infrared transmitter group is closed after time delay is finished; the infrared emitter group is not required to be kept in an open state all the time, the operation of a user is scanned through the scanning infrared emitter, the infrared emitter group is activated after the operation of the user is detected, the infrared emitter of the infrared emitter group is not opened when the operation is not performed, the fault probability of the infrared emitter is reduced, the energy consumption is reduced, and the service life of the whole infrared touch screen is prolonged.
Further, the controller is also used for estimating the estimated positions of the touch pen or the fingers of the user according to the number of the blocked infrared receivers and forming a verification range according to the estimated positions, and the controller only controls the infrared transmitter which emits infrared light and passes through the verification range to emit light when detecting that touch operation exists.
Since the size of the finger or the stylus of the user is basically determined, when the finger or the stylus is located at a certain position of the infrared touch screen and the scanning infrared transmitter continuously performs the rotational scanning, the number of the infrared receivers that can be blocked by the finger or the stylus is calculable, that is, the closer to the scanning infrared transmitter, the more infrared receivers that can receive no signal, and the farther from the scanning infrared transmitter, the less infrared receivers that can be blocked, so that the distance between the finger or the stylus and the scanning infrared transmitter can be roughly determined according to the number of the blocked infrared receivers, and then a rough estimation value of the position touched by the user can be obtained according to the current angle of the scanning infrared transmitter, but in order to more accurately obtain the touch position of the user, the controller obtains, according to the estimation value, and expanding to generate a verification range, and then turning on the infrared transmitter in the verification range. Through this kind of mode, can avoid opening infrared emitter in infrared emitter group is whole, and then energy-conserving more and reduce long when infrared emitter's uses, increase infrared touch screen's life.
The controller is further used for controlling the alarm module to give an alarm after the number of the shielded infrared receivers exceeds a preset value. The infrared receiver that is sheltered from is in a large number, and then it is very big to explain the shelter, perhaps scans infrared emitter and give out light abnormally, carries out the alarm through alarm module this moment and reminds, and convenience of customers carries out exception handling.
Further, an angular displacement sensor is arranged on the output shaft of the motor and is in signal connection with the controller. The rotation angle of the current rotary scanning infrared emitter can be accurately known through the angular displacement sensor, and more accurate detection can be realized.
Further, the motor is a stepping motor. The angle of the scanning infrared emitter is convenient to control.
Further, the alarm module comprises a warning lamp and a buzzer. The user is reminded through two forms of sound and flash, and the user can be guaranteed to find out abnormal conditions in time.
Drawings
FIG. 1 is a front view of an embodiment of a scanning structure of a transmitting tube for an infrared touch screen according to the present invention;
FIG. 2 is a diagram illustrating an example of an embodiment of a scanning structure of an emission tube for an infrared touch screen according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
description of reference numerals: the device comprises a mounting frame 1, an infrared receiver group 2, an infrared emitter group 3, a scanning infrared emitter 4, a touch position 5, a shielding area 6 and a verification range 7.
As shown in fig. 1, the embodiment discloses an infrared touch screen, which includes an installation frame 1, two adjacent inner side walls of the installation frame 1 are provided with an infrared emitter group 3, the infrared emitter group 3 includes a plurality of infrared emitters, two other inner side walls of the installation frame 1 are provided with an infrared receiver group 2 corresponding to the infrared emitter group 3, the infrared receiver group 2 includes a plurality of infrared receivers, a scanning device is arranged at a position where two inner side walls of the installation frame 1 on which the infrared emitter group 3 is arranged intersect, the scanning device includes a scanning infrared emitter 4 and a motor;
the controller is connected with the outer emitter group, the infrared receiver group 2 and the motor in a signal mode, the controller is used for controlling the motor to rotate to drive the scanning infrared emitter 4 to emit infrared rays to each infrared receiver, the controller is also used for receiving signals of each infrared receiver, the controller is also used for judging whether infrared rays emitted to the infrared receiver are blocked or not according to the signals of the infrared receivers right opposite to the scanning infrared emitter 4 and judging whether touch operation exists or not, the controller is also used for estimating the estimated positions of the touch pen or the finger of a user according to the number of the blocked infrared receivers and forming a verification range 7 according to the estimated positions, the controller is also used for controlling the emitted infrared rays to emit light through the infrared emitter of the verification range 7 after the touch operation is detected, then obtaining the state of the corresponding infrared receiver and calculating the touch position, the controller is further configured to turn off each infrared emitter of the infrared emitter group 3 after the touch position is calculated.
The intelligent alarm device is characterized by further comprising an alarm module, the alarm module comprises a warning lamp and a buzzer, the alarm module is in signal connection with the controller, and the controller is further used for controlling the alarm module to give an alarm after the number of the shielded infrared receivers exceeds a preset value.
In the invention, the controller is preferably a single chip microcomputer or a PLC (programmable logic controller), the controller of the embodiment adopts an STM32 series single chip microcomputer, and the warning lamp is preferably a red LED lamp.
In order to more accurately know the rotation angle of the current rotating scanning infrared emitter 4 and further more accurately control the angle of the scanning infrared emitter 4, in the embodiment, the motor is a stepping motor, an angular displacement sensor is arranged on the output shaft of the motor, and the angular displacement sensor is in signal connection with the controller.
In the technical scheme of the embodiment, infrared light is sequentially transmitted to each infrared receiver in the infrared receiver group 2 by controlling the rotation angle of the scanning infrared transmitter, the state of the infrared receiver is detected by the controller, if touch operation is detected, the infrared transmitter group 3 is opened, and the infrared transmitter group 3 is closed after the detection is finished; the infrared emitter group 3 is not required to be kept in an open state all the time, the operation of a user is scanned through the scanning infrared emitter, the infrared emitter group 3 is activated after the operation of the user is detected, the infrared emitter of the infrared emitter group 3 is not opened when the operation is not performed, the fault probability of the infrared emitter is reduced, the energy consumption is reduced, and the service life of the whole infrared touch screen is prolonged.
As shown in fig. 2, when a user touches the screen, a finger or a stylus of the user forms a shielded area 6, since the size of the finger or the stylus of the user is basically determined, when the finger or the stylus is at a certain position on the infrared touch screen and the scanning infrared transmitter 4 is continuously scanned in a rotating manner, the number of infrared receivers that can be shielded by the finger or the stylus can be calculated, i.e. the closer to the scanning infrared transmitter 4, the more infrared receivers can receive no signal, the farther from the scanning infrared transmitter 4, the fewer infrared receivers can be shielded, so that the distance between the finger or the stylus and the scanning infrared transmitter 4 can be roughly determined according to the number of shielded infrared receivers, and then according to the current angle of the scanning infrared transmitter 4, a rough estimation value of the position touched by the user can be obtained, however, in order to more accurately obtain the touch position 5 of the user, the controller generates a verification range 7 according to the estimation value in an expanding way, and then turns on the infrared emitters within the verification range 7. Through this kind of mode, can avoid opening infrared emitter in infrared emitter group 3 is whole, and then it is long when more energy-conserving and reduce infrared emitter's use, increase infrared touch screen's life.
The infrared receiver that is sheltered from is in a large number, and then it is very big to explain the shelter, perhaps scans infrared emitter 4 and is luminous unusual, carries out the alarm through alarm module this moment and reminds, and convenience of customers carries out exception handling. The user is reminded through two forms of sound and flash, and the user can be guaranteed to find out abnormal conditions in time.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. A transmitting tube scanning structure for an infrared touch screen comprises an installation frame, wherein two adjacent inner side walls of the installation frame are provided with an infrared emitter group, the infrared emitter group comprises a plurality of infrared emitters, the other two inner side walls of the installation frame are provided with infrared receiver groups corresponding to the infrared emitter groups, the infrared receiver groups comprise a plurality of infrared receivers, a scanning device is arranged at the crossed position of the two inner side walls of the installation frame, which are provided with the infrared emitter groups, and the scanning device comprises a scanning infrared emitter and a motor;
the controller is used for judging whether infrared light emitted to the infrared receiver is blocked or not according to signals of the infrared receiver opposite to the scanning infrared transmitter and judging whether touch operation exists or not, the controller is used for controlling the infrared transmitter group to be opened and closing the delay module when the touch operation is detected, the controller is also used for controlling the delay module to be opened when no touch operation is detected, the delay module sends an ending signal to the controller after the delay of the delay module is ended, and the controller controls the infrared transmitter group to be closed after receiving the ending signal;
the controller is further used for pre-estimating the pre-estimated positions of the touch pen or the fingers of the user according to the number of the blocked infrared receivers and forming a verification range according to the pre-estimated positions, and the controller only controls the emitted infrared light to emit light through the infrared emitter in the verification range when the touch operation is detected.
2. The transmitting tube scanning structure for the infrared touch screen as recited in claim 1, wherein: the controller is further used for controlling the alarm module to give an alarm after the number of the shielded infrared receivers exceeds a preset value.
3. The transmitting tube scanning structure for the infrared touch screen as recited in claim 2, wherein: an angular displacement sensor is arranged on an output shaft of the motor and is in signal connection with the controller.
4. The transmitting tube scanning structure for the infrared touch screen as recited in claim 3, wherein: the motor is a stepping motor.
5. The transmitting tube scanning structure for the infrared touch screen as recited in claim 4, wherein: the alarm module comprises a warning lamp and a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849853.0A CN109062453B (en) | 2018-07-28 | 2018-07-28 | Transmitting tube scanning structure for infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849853.0A CN109062453B (en) | 2018-07-28 | 2018-07-28 | Transmitting tube scanning structure for infrared touch screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109062453A CN109062453A (en) | 2018-12-21 |
| CN109062453B true CN109062453B (en) | 2021-08-24 |
Family
ID=64835942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810849853.0A Active CN109062453B (en) | 2018-07-28 | 2018-07-28 | Transmitting tube scanning structure for infrared touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109062453B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754525A (en) * | 2019-01-11 | 2019-05-14 | 京东方科技集团股份有限公司 | Automatic vending equipment and its control method, storage medium and electronic equipment |
| CN112130689A (en) * | 2019-06-24 | 2020-12-25 | 海信视像科技股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
| CN112486347B (en) * | 2019-09-12 | 2023-04-11 | 青岛海信商用显示股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070082958A (en) * | 2006-02-20 | 2007-08-23 | 호감테크놀로지(주) | Infrared touch screen apparatus and method for calculation of coordinations at a touch point of the same |
| CN101714041A (en) * | 2009-11-04 | 2010-05-26 | 深圳市山鹰科技有限公司 | Method for prolonging service life of infrared touch screen |
| CN103019472A (en) * | 2012-11-30 | 2013-04-03 | 深圳市深越光电技术有限公司 | Infrared touch screen |
| CN202995683U (en) * | 2012-11-30 | 2013-06-12 | 深圳市深越光电技术有限公司 | Infrared touch screen |
-
2018
- 2018-07-28 CN CN201810849853.0A patent/CN109062453B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070082958A (en) * | 2006-02-20 | 2007-08-23 | 호감테크놀로지(주) | Infrared touch screen apparatus and method for calculation of coordinations at a touch point of the same |
| CN101714041A (en) * | 2009-11-04 | 2010-05-26 | 深圳市山鹰科技有限公司 | Method for prolonging service life of infrared touch screen |
| CN103019472A (en) * | 2012-11-30 | 2013-04-03 | 深圳市深越光电技术有限公司 | Infrared touch screen |
| CN202995683U (en) * | 2012-11-30 | 2013-06-12 | 深圳市深越光电技术有限公司 | Infrared touch screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109062453A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109062453B (en) | Transmitting tube scanning structure for infrared touch screen | |
| US8130202B2 (en) | Infrared touch screen gated by touch force | |
| CN103279248B (en) | Integrated touch-control organic LED display device | |
| US20110084939A1 (en) | Infrared touchscreen electronics | |
| CN113703618B (en) | Knob type touch display device and driving method thereof | |
| CN108984044A (en) | A kind of infrared touch panel | |
| CN102129327A (en) | High-efficiency infrared touch panel device | |
| CN201465072U (en) | Virtual touch screen | |
| US9971447B2 (en) | Electronic apparatus and coordinates detection method | |
| CN206441136U (en) | A kind of touch display substrate, touch-control display panel and touch control display apparatus | |
| US20180052549A1 (en) | Touch display system and touch operation device | |
| CN107145264B (en) | Optical signal receiving head and application thereof | |
| CN106293175B (en) | Touch processor, touch device, touch system and touch method | |
| CN103019472A (en) | Infrared touch screen | |
| US8422336B2 (en) | Operating method for an ultra-sound sensor | |
| KR100963228B1 (en) | Apparatus for inputting touch signal | |
| CN106354304B (en) | Touch panel, touch device and driving method thereof | |
| CN104023256A (en) | Touch screen remote control unit | |
| US10461743B2 (en) | Interactive display system and method for use with low emissivity glass using infrared illumination | |
| CN108062179A (en) | Touch panel and its pressure feedback system, display device with pressure sensitivity feedback | |
| CN210072581U (en) | Infrared touch screen capable of being installed on explosion-proof box | |
| US9575613B2 (en) | Touch-sensing apparatus, touch system, and touch-detection method | |
| CN110308850B (en) | Proximity sensing control method and control device for equipment | |
| CN109254656B (en) | Proximity detection method and device | |
| CN220627038U (en) | Infrared touch display screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |