CN109708594B - Method and device for detecting deflection of touch screen - Google Patents
Method and device for detecting deflection of touch screen Download PDFInfo
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- CN109708594B CN109708594B CN201811620051.9A CN201811620051A CN109708594B CN 109708594 B CN109708594 B CN 109708594B CN 201811620051 A CN201811620051 A CN 201811620051A CN 109708594 B CN109708594 B CN 109708594B
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Abstract
The embodiment of the invention provides a method and a device for detecting the deflection of a touch screen, which are used for detecting the deflection of the touch screen. The device for detecting the deflection of the touch screen comprises: a detection bracket and a detector; the detection bracket is used for fixing the touch screen to be detected; the detector is used for sending a detection signal to the direction of the touch screen to be detected and receiving a reflection signal of the detection signal; the detector is further used for determining the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal; the first reflection signal is a reflection signal when the touch screen to be detected is not deformed, and the second reflection signal is a reflection signal when the touch screen to be detected is deformed maximally.
Description
Technical Field
The invention relates to the technical field of terminals, in particular to a method and a device for detecting the deflection of a touch screen.
Background
The deflection is the linear displacement of the axis of the rod piece in the direction vertical to the axis or the linear displacement of the middle surface of the plate shell in the direction vertical to the middle surface when the rod piece is stressed or the temperature changes are not uniform.
In electronic terminal products such as mobile phones and flat panels, touch screens are increasingly widely used. For the screen touching performance, the stiffness, i.e. the deflection after the force is applied, needs to be known. Taking a mobile phone and a flat panel as an example, the larger the deflection is after being stressed, the higher the possibility that the touch screen and the display screen are collided is, and then the problems of touch screen cracking, display screen cracking and the like are possibly caused. If the flexibility of the touch screen is known, a corresponding gap can be reserved in the design stage so as to prevent the touch screen from colliding with the display screen after being stressed. Therefore, it is necessary to obtain a deflection of the touch screen under a certain force.
In the prior art, no deflection test method for a touch screen of an electronic terminal product exists.
Disclosure of Invention
The embodiment of the invention provides a method and a device for detecting the deflection of a touch screen, which are used for detecting the deflection of the touch screen.
In one aspect, an embodiment of the present invention provides a device for detecting a deflection of a touch screen, including:
a detection bracket and a detector;
the detection bracket is used for fixing the touch screen to be detected;
the detector is used for sending a detection signal to the direction of the touch screen to be detected and receiving a reflection signal of the detection signal;
the detector is further used for determining the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal; the first reflection signal is a reflection signal when the touch screen to be detected is not deformed, and the second reflection signal is a reflection signal when the touch screen to be detected is deformed maximally.
Further, the detector comprises an acoustic transceiver and a processor;
the acoustic transceiver is used for sending a detection signal to the direction of the touch screen to be detected and receiving a reflected signal of the detection signal;
and the processor is used for determining the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal.
Further, the acoustic transceiver is further configured to determine the first reflected signal and the second reflected signal from a plurality of sets of reflected signals.
Further, before the image quality parameter of the frame image to be pushed, the number of the pushed frame images, and the maximum number of the pushed frames satisfy the frame pushing policy, the method further includes:
and determining that the image quality of the frame image to be pushed is greater than a preset image quality threshold.
Further, the apparatus further comprises: a force application device;
and the force application device is used for enabling the touch screen to be detected fixed on the detection support to deform.
Further, the detector is located below the detection bracket.
Further, the force application device comprises a lifting structure and a throwing object positioned on the lifting structure;
and the force application device is used for releasing the throwing object when the lifting structure is arranged at a set height so as to apply force to the touch screen to be detected by the throwing object.
Further, the detector determines the emission frequency of the emission signal according to the material of the touch screen to be detected.
In one aspect, the present invention provides a method for detecting a deflection of a touch screen, including:
the detector sends a detection signal to the direction of the touch screen to be detected and receives a reflection signal of the detection signal;
the detector determines a first reflection signal and a second reflection signal from a plurality of groups of reflection signals, wherein the first reflection signal is a reflection signal when the touch screen to be detected is not deformed, and the second reflection signal is a reflection signal when the touch screen to be detected is deformed maximally;
and the detector determines the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal.
Further, the detector determines a time difference corresponding to each group of reflected signals, wherein the time difference is a time difference between sending time and receiving time;
the detector determines the reflection signal with the largest time difference as a first reflection signal, and determines the reflection signal with the smallest time difference as a second reflection signal.
Further, the frame pushing unit is specifically configured to:
the detector determines the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal, and the method comprises the following steps:
the detector determines a first distance according to the time difference of the first reflection signal;
the detector determines a second distance according to the time difference of the second reflection signal;
and the detector determines the deflection of the touch screen to be detected according to the first distance and the second distance.
Based on the technical scheme, the detected deflection of the touch screen can be determined through the emission signal emitted by the detector and the reflection signal corresponding to the emission signal.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for detecting deflection of a touch screen according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an apparatus for detecting deflection of a touch screen according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for detecting deflection of a touch screen according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a method for detecting a deflection of a touch screen according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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.
An embodiment of the present invention provides an apparatus 100 for detecting a deflection of a touch screen, as shown in fig. 1, including:
a detection bracket 101 and a detector 102;
the detection bracket 101 is used for fixing the touch screen 103 to be detected;
the detector 102 is configured to send a detection signal to the direction of the touch screen 103 to be detected, and receive a reflected signal of the detection signal;
the detector 101 is further configured to determine the deflection of the touch screen 103 to be detected according to the first reflection signal and the second reflection signal; the first reflection signal is a reflection signal when the touch screen 103 to be detected is not deformed, and the second reflection signal is a reflection signal when the touch screen 103 to be detected is deformed maximally.
In the device in the embodiment of the invention, the touch screen 103 to be detected is fixed on the detection support 101, the detector 102 is used for transmitting a detection signal to the touch screen 103 to be detected when the touch screen is not deformed and receiving a first reflection signal of the detection signal, then the detector 102 is used for transmitting the detection signal to the touch screen 103 to be detected when the touch screen is maximally deformed and receiving a second reflection signal of the detection signal, and the deflection of the touch screen 103 to be detected is determined according to the first reflection signal and the second reflection signal.
Optionally, in the embodiment of the present invention, the detecting instrument 102 is placed below the detecting bracket 101.
Optionally, in the embodiment of the present invention, the detector 102 determines the emission frequency of the emission signal according to the material of the touch screen 103 to be detected.
That is, the time for generating the deformation is different according to the material of the touch screen 103 to be detected, and the frequency of the transmission signal of the detector 102 is adjusted according to the different touch screens 103 to be detected.
The detector 102 in the embodiment of the present invention may determine which reflected signal is the received reflected signal of the transmitted signal, and optionally, the signal transmitted by the detector 102 is an acoustic signal, as shown in fig. 2, the detector 103 includes an acoustic transceiver 1021 and a processor 1022; the acoustic wave transceiver 1021 transmits an acoustic wave to the touch screen 103 to be detected and receives a reflected acoustic wave, and the processor 1022 determines the deflection of the touch screen 103 to be detected according to the transmitted acoustic wave.
Optionally, in this embodiment of the present invention, in order to ensure that the transmitted sound wave is received and a reflected sound wave is generated when the touch screen 103 is maximally deformed, the sound wave transceiver 1021 transmits multiple sets of sound waves to the touch screen 103 to be detected, and the sound wave transceiver 1021 can determine the first reflected signal and the second reflected signal from the multiple sets of reflected signals, that is, the first reflected signal generated when the touch screen 103 to be detected is not deformed and the second reflected signal generated when the touch screen 103 to be detected is maximally deformed.
Optionally, in the embodiment of the present invention, the detecting device 100 further includes a force applying device 104, and the force applying device 104 is configured to deform the touch screen 103 to be detected, which is fixed on the detecting bracket 101. Alternatively, as shown in FIG. 3, force applying device 104 is a ball.
Of course, optionally, the force applying device 104 includes a lifting structure 1041 and a throwing object 1042 positioned on the lifting structure 1041; the force application device 104 is configured to release the throwing object 1042 when the lifting structure 1041 is set at the set height, so that the throwing object 1042 applies force to the touch screen 103 to be detected.
Optionally, the throwing object 1042 is a small ball, as shown in fig. 3, the small ball is fixed on the lifting structure 1041 and is at a certain height from the touch screen 103 to be detected, and when the set height from the touch screen 103 to be detected is determined, the small ball is released to apply force to the touch screen 103 to be detected.
Based on the apparatuses in fig. 1-3, an embodiment of the present invention further provides a method for detecting a deflection of a touch screen, as shown in fig. 4, including:
and 403, determining the deflection of the touch screen to be detected by the detector according to the first reflection signal and the second reflection signal.
Optionally, in step 403, the method for determining the first reflected signal and the second reflected signal specifically includes:
the detector determines a time difference corresponding to each group of reflected signals, wherein the time difference is a time difference between sending time and receiving time;
the detector determines the reflection signal with the largest time difference as a first reflection signal, and determines the reflection signal with the smallest time difference as a second reflection signal.
Optionally, in step 403, a specific method for determining the deflection of the touch screen to be detected is as follows:
the detector determines a first distance according to the time difference of the first reflection signal;
the detector determines a second distance according to the time difference of the second reflection signal;
and the detector determines the deflection of the touch screen to be detected according to the first distance and the second distance.
It should be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An apparatus for detecting deflection of a touch screen, comprising:
a detection bracket and a detector;
the detection bracket is used for fixing the touch screen to be detected;
the detector is used for sending an acoustic wave detection signal to the direction of the touch screen to be detected and receiving a reflected acoustic wave signal of the detection signal, and the detector is positioned below the detection support;
the device further comprises: a force application device;
the force application device is used for enabling the touch screen to be detected fixed on the detection support to deform;
the force application device comprises a lifting structure and a throwing object positioned on the lifting structure;
the force application device is used for releasing the throwing object when the lifting structure is arranged at a set height so as to apply force to the touch screen to be detected;
the detector is further used for determining the deflection of the touch screen to be detected according to the first reflected sound wave signal and the second reflected sound wave signal; the first reflected sound wave signal is a reflected sound wave signal when the touch screen to be detected is not deformed, and the second reflected sound wave signal is a reflected sound wave signal when the touch screen to be detected is deformed maximally.
2. The apparatus of claim 1, wherein the detector comprises an acoustic transceiver and a processor;
the acoustic transceiver is used for sending a detection signal to the direction of the touch screen to be detected and receiving a reflected signal of the detection signal;
and the processor is used for determining the deflection of the touch screen to be detected according to the first reflection signal and the second reflection signal.
3. The apparatus of claim 2, wherein the acoustic transceiver is further configured to determine the first reflected signal and the second reflected signal from a plurality of sets of reflected signals.
4. The device of claim 1, wherein the detector determines the emission frequency of the emission signal according to the material of the touch screen to be detected.
5. A method for detecting the deflection of a touch screen, which is applied to the device of any one of claims 1 to 4, and comprises the following steps:
the detector sends a sound wave detection signal to the direction of the touch screen to be detected and receives a reflected sound wave signal of the detection signal;
the detection instrument determines a first reflected sound wave signal and a second reflected sound wave signal from a plurality of groups of reflected sound wave signals, wherein the first reflected sound wave signal is a reflected sound wave signal when the touch screen to be detected is not deformed, the second reflected sound wave signal is a reflected sound wave signal when the touch screen to be detected is maximally deformed, and the maximum deformation of the touch screen to be detected is achieved by applying force to the touch screen to be detected through a throwing object;
and the detector determines the deflection of the touch screen to be detected according to the first reflected sound wave signal and the second reflected sound wave signal.
6. The method of claim 5, wherein the detector determines the first reflected signal and the second reflected signal from a plurality of sets of reflected signals, comprising:
the detector determines a time difference corresponding to each group of reflected signals, wherein the time difference is a time difference between sending time and receiving time;
the detector determines the reflection signal with the largest time difference as a first reflection signal, and determines the reflection signal with the smallest time difference as a second reflection signal.
7. The method of claim 6, wherein determining, by the detector, the deflection of the touch screen to be detected based on the first reflection signal and the second reflection signal comprises:
the detector determines a first distance according to the time difference of the first reflection signal;
the detector determines a second distance according to the time difference of the second reflection signal;
and the detector determines the deflection of the touch screen to be detected according to the first distance and the second distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620051.9A CN109708594B (en) | 2018-12-28 | 2018-12-28 | Method and device for detecting deflection of touch screen |
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| CN201811620051.9A CN109708594B (en) | 2018-12-28 | 2018-12-28 | Method and device for detecting deflection of touch screen |
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| CN109708594A CN109708594A (en) | 2019-05-03 |
| CN109708594B true CN109708594B (en) | 2020-12-04 |
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