CN113176836A - Film key pressure detection method - Google Patents
Film key pressure detection method Download PDFInfo
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- CN113176836A CN113176836A CN202110568967.XA CN202110568967A CN113176836A CN 113176836 A CN113176836 A CN 113176836A CN 202110568967 A CN202110568967 A CN 202110568967A CN 113176836 A CN113176836 A CN 113176836A
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- pressure
- key
- film key
- pressing
- detecting
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 47
- 238000012790 confirmation Methods 0.000 claims abstract description 8
- 239000010408 film Substances 0.000 claims description 69
- 238000012937 correction Methods 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 4
- 238000005429 filling process Methods 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000011049 filling Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/2221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test input/output devices or peripheral units
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Human Computer Interaction (AREA)
- Input From Keyboards Or The Like (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a film key pressure detection method, which comprises the following steps: s1, pressing the film key, detecting the position of the pressed film key, and detecting the distance between the upper surface and the lower surface of the film key before pressing; s2, recording the pressure of the pressed film key when the pressed film key reacts, and detecting the distance change between the upper surface and the lower surface of the pressed film key; s3, comparing the pressure change of pressing the film key for multiple times in S2 with a preset pressure value, and generating confirmation information when the preset standard vertebra is met; according to the invention, whether the film key is abnormal or not is determined by the pressure value applied to the film key, the distance between the upper surface and the lower surface of the film key and the like, so that the purpose of prejudging or detecting whether the film key is damaged or not can be achieved, and the film key can be detected and replaced in time.
Description
Technical Field
The invention relates to the technical field of film keys, in particular to a film key pressure detection method.
Background
The film button is a PET sheet (including metal spring pieces also called metal dome sheets) with contacts, is used as a switch on circuit boards such as PCBs, FPCs and the like, and plays an important role of a touch switch between a user and an instrument. Compared with the traditional silica gel key, the thin film key has better hand feeling and longer service life, and can indirectly improve the production efficiency of various switches using the conductive film. The contact on the film key is positioned at the conductive part (mostly above the golden finger on the circuit board) on the PCB, when the key is pressed by external force, the central point of the contact is concave and contacts with the circuit on the PCB, thereby forming a loop, the current passes through, and the whole product can work normally.
Patent No. CN201910681217.6 provides a method, an apparatus and a mobile terminal for detecting a pressure button, which can only detect sensitivity when detecting a button to determine whether the button is damaged, but cannot detect the pressure of a membrane button sufficiently, and therefore, a determination error occurs when determining a fault.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a film key pressure detection method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a film key pressure detection method comprises the following steps:
s1, pressing the film key, detecting the position of the pressed film key, and detecting the distance between the upper surface and the lower surface of the film key before pressing;
s2, recording the pressure of the pressed film key when the pressed film key reacts, and detecting the distance change between the upper surface and the lower surface of the pressed film key;
s3, comparing the pressure change of pressing the film key for multiple times in S2 with a preset pressure value, and generating confirmation information when the preset standard vertebra is met;
and S4, recording the maximum pressure value and the minimum pressure value of normal reaction and the distance change of the upper surface and the lower surface of the film key during detection, and comparing the pressure values without reaction and comparing the distances to judge whether the film key is damaged.
Further, the step of detecting the distance between the upper surface and the lower surface of the film key comprises the following steps:
s1, collecting images of the highest part of the upper surface bulge and the lowest part of the lower surface of the thin film key;
s2, processing the collected upper surface image and the collected lower surface image to synthesize an image;
and S3, detecting the distance between the upper surface and the lower surface of the synthesized image and recording the change for many times.
And further, filling, processing and filtering the upper surface image and the lower surface image of the film key respectively, comparing the measured distance value with a preset standard distance value, judging whether the measured distance value is within an error range, if so, determining that the detection result is a good product, and otherwise, determining that the detection result is a defective product.
Furthermore, the film key is pressed for multiple times, the pressing pressure corresponding to each pressing operation is obtained, and the pressing pressure value of the pressure key triggered during each pressing is obtained; and determining the pressure range of the key based on the initial pressing area and a plurality of pressing pressure values.
Further, the film key is determined to be in a normal state under the condition that the pressing pressure is within the preset pressing pressure range.
Further, the corresponding test pressure detection values are collected when different film keys are pressed at the same test pressure value; calculating detection correction coefficients corresponding to different film keys, wherein the detection correction coefficients are the ratio of the test pressure value to the corresponding test pressure detection value; calculating a correction pressure value, wherein the correction pressure value is the product of the pressure detection value and the corresponding detection correction coefficient; and generating confirmation information when the corrected pressure value is greater than or equal to the preset pressure value.
The invention has the beneficial effects that:
1. according to the invention, whether the film key is abnormal or not is determined by the pressure value applied to the film key, the distance between the upper surface and the lower surface of the film key and the like, so that the purpose of prejudging or detecting whether the film key is damaged or not can be achieved, and the film key can be detected and replaced in time.
2. Through to pressure measurement value and predetermined pressure value, detect film button pressure to adjust the pressure value of film button atress reaction, prevent that the film button from receiving the too big damage of appearing after long-time use of pressure.
Drawings
Fig. 1 is a schematic diagram of a method for detecting a pressure of a membrane key according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1:
referring to fig. 1, a method for detecting a pressure of a membrane key includes the following steps:
s1, pressing the film key, detecting the position of the pressed film key, and detecting the distance between the upper surface and the lower surface of the film key before pressing;
s2, recording the pressure of the pressed film key when the pressed film key reacts, and detecting the distance change between the upper surface and the lower surface of the pressed film key;
s3, comparing the pressure change of pressing the film key for multiple times in S2 with a preset pressure value, and generating confirmation information when the preset standard vertebra is met;
and S4, recording the maximum pressure value and the minimum pressure value of normal reaction and the distance change of the upper surface and the lower surface of the film key during detection, and comparing the pressure values without reaction and comparing the distances to judge whether the film key is damaged.
And further, filling, processing and filtering the upper surface image and the lower surface image of the film key respectively, comparing the measured distance value with a preset standard distance value, judging whether the measured distance value is within an error range, if so, determining that the detection result is a good product, otherwise, determining that the detection result is a defective product.
Further, the film key is pressed for multiple times, the pressing pressure corresponding to each pressing operation is obtained, and the pressing pressure value of the pressure key triggered during each pressing is obtained; and determining the pressure range of the key based on the initial pressing area and a plurality of pressing pressure values.
Further, under the condition that the pressing pressure is within the preset pressing pressure range, the film key is determined to be in a normal state.
Example 2:
referring to fig. 1, a method for detecting a pressure of a membrane key includes the following steps:
s1, pressing the film key, detecting the position of the pressed film key, and detecting the distance between the upper surface and the lower surface of the film key before pressing;
s2, recording the pressure of the pressed film key when the pressed film key reacts, and detecting the distance change between the upper surface and the lower surface of the pressed film key;
s3, comparing the pressure change of pressing the film key for multiple times in S2 with a preset pressure value, and generating confirmation information when the preset standard vertebra is met;
and S4, recording the maximum pressure value and the minimum pressure value of normal reaction and the distance change of the upper surface and the lower surface of the film key during detection, and comparing the pressure values without reaction and comparing the distances to judge whether the film key is damaged.
Further, the step of detecting the distance between the upper surface and the lower surface of the film key comprises the following steps:
s1, collecting images of the highest part of the upper surface bulge and the lowest part of the lower surface of the thin film key;
s2, processing the collected upper surface image and the collected lower surface image to synthesize an image;
and S3, detecting the distance between the upper surface and the lower surface of the synthesized image and recording the change for many times.
And further, filling, processing and filtering the upper surface image and the lower surface image of the film key respectively, comparing the measured distance value with a preset standard distance value, judging whether the measured distance value is within an error range, if so, determining that the detection result is a good product, otherwise, determining that the detection result is a defective product.
Further, the film key is pressed for multiple times, the pressing pressure corresponding to each pressing operation is obtained, and the pressing pressure value of the pressure key triggered during each pressing is obtained; and determining the pressure range of the key based on the initial pressing area and a plurality of pressing pressure values.
Further, under the condition that the pressing pressure is within the preset pressing pressure range, the film key is determined to be in a normal state.
Further, collecting corresponding test pressure detection values when different film keys are pressed at the same test pressure value; calculating detection correction coefficients corresponding to different film keys, wherein the detection correction coefficients are the ratio of the test pressure value to the corresponding test pressure detection value; calculating a correction pressure value, wherein the correction pressure value is the product of the pressure detection value and the corresponding detection correction coefficient; and generating confirmation information when the corrected pressure value is greater than or equal to the preset pressure value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. A film key pressure detection method is characterized by comprising the following steps:
s1, pressing the film key, detecting the position of the pressed film key, and detecting the distance between the upper surface and the lower surface of the film key before pressing;
s2, recording the pressure of the pressed film key when the pressed film key reacts, and detecting the distance change between the upper surface and the lower surface of the pressed film key;
s3, comparing the pressure change of pressing the film key for multiple times in S2 with a preset pressure value, and generating confirmation information when the preset standard vertebra is met;
and S4, recording the maximum pressure value and the minimum pressure value of normal reaction and the distance change of the upper surface and the lower surface of the film key during detection, and comparing the pressure values without reaction and comparing the distances to judge whether the film key is damaged.
2. The method for detecting the pressure of the membrane key as claimed in claim 1, wherein the step of detecting the distance between the upper surface and the lower surface of the membrane key comprises the steps of:
s1, collecting images of the highest part of the upper surface bulge and the lowest part of the lower surface of the thin film key;
s2, processing the collected upper surface image and the collected lower surface image to synthesize an image;
and S3, detecting the distance between the upper surface and the lower surface of the synthesized image and recording the change for many times.
3. The method as claimed in claim 2, wherein the filling process is performed on the upper surface image and the lower surface image of the membrane key, and the measured distance value is compared with a predetermined standard distance value, and whether the measured distance value is within an error range is determined, if so, the detection result is good, otherwise, the detection result is defective.
4. The method for detecting the pressure of the membrane key according to claim 1, wherein the membrane key is pressed for a plurality of times, the pressing pressure corresponding to each pressing operation is obtained, and the pressing pressure value for triggering the pressure key when each pressing is carried out is obtained; and determining the pressure range of the key based on the initial pressing area and a plurality of pressing pressure values.
5. The method for detecting membrane key pressure as claimed in claim 1, wherein the membrane key is determined to be in a normal state when the pressing pressure is within a preset pressing pressure range.
6. The method for detecting the pressure of the membrane key according to claim 1, wherein the corresponding test pressure detection values are collected when different membrane keys are pressed at the same test pressure value; calculating detection correction coefficients corresponding to different film keys, wherein the detection correction coefficients are the ratio of the test pressure value to the corresponding test pressure detection value; calculating a correction pressure value, wherein the correction pressure value is the product of the pressure detection value and the corresponding detection correction coefficient; and generating confirmation information when the corrected pressure value is greater than or equal to the preset pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568967.XA CN113176836B (en) | 2021-05-25 | 2021-05-25 | Film key pressure detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568967.XA CN113176836B (en) | 2021-05-25 | 2021-05-25 | Film key pressure detection method |
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| Publication Number | Publication Date |
|---|---|
| CN113176836A true CN113176836A (en) | 2021-07-27 |
| CN113176836B CN113176836B (en) | 2024-08-02 |
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| CN202110568967.XA Active CN113176836B (en) | 2021-05-25 | 2021-05-25 | Film key pressure detection method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009176162A (en) * | 2008-01-25 | 2009-08-06 | Yaskawa Electric Corp | Failure detecting means of industrial robot |
| CN201910042U (en) * | 2011-01-30 | 2011-07-27 | 英属盖曼群岛商科嘉国际股份有限公司台湾分公司 | Touch-sensitive touch control keyboard |
| KR20120066242A (en) * | 2010-12-14 | 2012-06-22 | 주식회사 식스디그리즈 | Apparatus of testing pad |
| CN108845724A (en) * | 2014-02-24 | 2018-11-20 | 原相科技股份有限公司 | Capacitive key module with function of preventing mistaken touch |
| TWI646455B (en) * | 2017-07-04 | 2019-01-01 | 大陸商北京集創北方科技股份有限公司 | Pressure touch sensing device and its detection method |
| CN110471808A (en) * | 2019-07-25 | 2019-11-19 | 维沃移动通信有限公司 | A kind of pressure buttons detection method, device and mobile terminal |
-
2021
- 2021-05-25 CN CN202110568967.XA patent/CN113176836B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009176162A (en) * | 2008-01-25 | 2009-08-06 | Yaskawa Electric Corp | Failure detecting means of industrial robot |
| KR20120066242A (en) * | 2010-12-14 | 2012-06-22 | 주식회사 식스디그리즈 | Apparatus of testing pad |
| CN201910042U (en) * | 2011-01-30 | 2011-07-27 | 英属盖曼群岛商科嘉国际股份有限公司台湾分公司 | Touch-sensitive touch control keyboard |
| CN108845724A (en) * | 2014-02-24 | 2018-11-20 | 原相科技股份有限公司 | Capacitive key module with function of preventing mistaken touch |
| TWI646455B (en) * | 2017-07-04 | 2019-01-01 | 大陸商北京集創北方科技股份有限公司 | Pressure touch sensing device and its detection method |
| CN110471808A (en) * | 2019-07-25 | 2019-11-19 | 维沃移动通信有限公司 | A kind of pressure buttons detection method, device and mobile terminal |
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| CN113176836B (en) | 2024-08-02 |
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