CN112539858A - Identification method - Google Patents
Identification method Download PDFInfo
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- CN112539858A CN112539858A CN201910893642.1A CN201910893642A CN112539858A CN 112539858 A CN112539858 A CN 112539858A CN 201910893642 A CN201910893642 A CN 201910893642A CN 112539858 A CN112539858 A CN 112539858A
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- pressure
- pressure sensing
- elastic conductive
- determining
- dielectric film
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
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Abstract
The invention relates to an identification method, which comprises the following steps: determining a pressure sensing threshold range of the pressure sensing coil, the pressure sensing threshold range comprising: a lower pressure sensing threshold; acquiring a preset external static pressure threshold value and a standard touch pressure value; determining the minimum distance between the elastic conductive dielectric film and the pressure induction coil according to the external static pressure threshold and the elastic coefficient of the elastic conductive dielectric film; determining the maximum distance between the elastic conductive dielectric film and the pressure-sensitive coil according to the standard touch pressure value and the elastic coefficient of the elastic conductive dielectric film; determining a set interval according to the maximum interval and the minimum interval, and arranging the elastic conductive dielectric film above the pressure-sensitive coil according to the set interval; the elastic conductive dielectric film is elastically deformed by external pressure, and when the external pressure is greater than an external static pressure threshold value, the pressure sensing coil senses that the pressure transmitted by the elastic conductive dielectric film reaches or is greater than a lower limit of a pressure sensing threshold value, and the pressure sensing coil outputs a pressure sensing output signal.
Description
Technical Field
The invention relates to the technical field of pressure sensing design, in particular to an identification method.
Background
The pressure-sensitive identification device is widely applied to intelligent products, such as an intelligent pen, but the existing pressure-sensitive identification device generally depends on the distance change of a coil and a magnetic rod, so that a wave band is changed to obtain a pressure value, but the pressure detection range of the pressure-sensitive identification device is narrow, the application requirement cannot be met frequently, and the sensitivity is poor, and the pressure-sensitive identification device adopts a very precise electronic control system to detect the pressure, so that the sensitivity is improved, but the detection method and the internal structure are complex and the cost is high.
Disclosure of Invention
The invention aims to provide an identification method, which can realize a pressure-sensitive identification mode with a pressure detection range meeting application requirements and high detection sensitivity through simple design.
In order to achieve the above object, the present invention provides an identification method, including:
determining a pressure sensing threshold range of a pressure sensing coil, the pressure sensing threshold range comprising: a lower pressure sensing threshold;
acquiring a preset external static pressure threshold value and a standard touch pressure value;
determining the minimum distance between the elastic conductive medium film and the pressure induction coil according to the external static pressure threshold and the elastic coefficient of the elastic conductive medium film;
determining the maximum distance between the elastic conductive medium film and the pressure induction coil according to the standard touch pressure value and the elastic coefficient of the elastic conductive medium film;
determining a set interval according to the maximum interval and the minimum interval, and arranging the elastic conductive medium film above the pressure induction coil according to the set interval;
the elastic conductive dielectric film is elastically deformed by external pressure, when the external pressure is greater than an external static pressure threshold value, the pressure sensing coil senses that the pressure transmitted by the elastic conductive dielectric film reaches or is greater than the lower limit of the pressure sensing threshold value, and the pressure sensing coil outputs a pressure sensing output signal.
Preferably, the identification method further includes:
a clock counter is connected behind the signal output end of the pressure sensing coil;
identifying relaxation time according to the required pressure and setting the counting period of a clock counter;
converting a pressure sensing output signal of a pressure sensing coil into a trigger signal, and starting clock counting by the clock counter according to the trigger signal;
and when the value counted by the clock reaches a counting period, the processor receives the pressure sensing output signal output by the pressure sensing coil.
Preferably, the minimum distance satisfies: and under the condition that the external pressure is smaller than the external static pressure threshold, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of touching the pressure induction coil is smaller than the lower limit of the pressure induction threshold.
Preferably, the maximum distance satisfies: under the condition that the external pressure is equal to the standard touch pressure value, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of the touch pressure sensing coil is not less than the lower limit of the pressure sensing threshold.
Preferably, the determining the set distance according to the maximum distance and the minimum distance specifically includes:
determining sensitivity design parameters of the identification device;
and determining the optimal value of the distance to be the set distance according to the sensitivity design parameter, the maximum distance and the minimum distance.
Preferably, the method further comprises:
and arranging a gap side wall according to the arrangement interval, wherein the gap side wall is arranged between the outer edge of the elastic conductive dielectric film and the periphery of the pressure induction coil.
The identification method provided by the embodiment of the invention can realize a pressure-sensitive identification mode which has a pressure detection range capable of meeting application requirements and high detection sensitivity through simple design. When the recognition device designed by the method is applied to the intelligent pen, the writing pressure can be detected, and the non-writing pressure generated when the intelligent pen is touched by mistake can not be detected.
Drawings
Fig. 1 is a flowchart of an identification method according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Fig. 1 is a flowchart of an identification method according to an embodiment of the present invention. The following describes an identification method provided by an embodiment of the present invention with reference to fig. 1.
The identification method provided by the embodiment of the invention comprises the following steps:
specifically, the pressure sensing threshold range includes a lower pressure sensing threshold limit;
the lower pressure induction threshold is the minimum pressure induction value of the pressure induction coil, namely a value which can be identified to enable the pressure induction coil to output a pressure detection signal.
specifically, the external static pressure threshold is set as the maximum false induction value of the non-actual touch, and the value can be obtained through data collection and statistics. The standard touch pressure value refers to a statistical result average value or a typical value of pressure values generated by normal touch pressing, and is obtained through data collection and statistics.
specifically, the conductive dielectric film is arranged above the pressure-sensitive coil when the conductive dielectric film is elastic, and the conductive dielectric film is not in contact with the pressure-sensitive coil when no external force acts on the conductive dielectric film.
When the pressure-sensitive coil is acted by external force, the elastic conductive dielectric film deforms towards the pressure-sensitive coil under the condition that the external force reaches a certain value, and the elastic conductive dielectric film is contacted with the pressure-sensitive coil.
The elastic coefficient is a related function of the ratio of the force applied to the elastic conductive dielectric film to the deformation of the elastic conductive dielectric film. When the elastic coefficient of the elastic conductive dielectric film is larger, the elastic conductive dielectric film can generate larger deformation when being subjected to a small force.
The elastic coefficient of the elastic conductive dielectric film is related to the material and the thickness of the elastic conductive dielectric film, and the larger the thickness of the elastic conductive dielectric film is, the larger the elastic coefficient of the elastic conductive dielectric film is.
In order to avoid false touches or false identifications due to excessive sensitivity, a minimum distance is set to avoid filtering of pressure signals below an external static pressure threshold.
Wherein the minimum spacing satisfies: under the condition that the external pressure is smaller than the external static pressure threshold, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of the touch pressure sensing coil is smaller than the lower limit of the pressure sensing threshold.
wherein the maximum spacing at least satisfies: under the condition that the external pressure is equal to the standard touch pressure value, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of the touch pressure sensing coil is not less than the lower limit of the pressure sensing threshold.
specifically, the set pitch may be simply set as an average of the maximum pitch and the minimum pitch.
In a preferred embodiment, the set spacing may also be determined in consideration of sensitivity design parameters:
firstly, determining sensitivity design parameters of a recognition device; and then determining the optimal value of the distance as the set distance according to the sensitivity design parameter, the maximum distance and the minimum distance.
The elastic conductive dielectric film is arranged above the pressure induction coil by the distance to be set, and the elastic conductive dielectric film can be realized by arranging the gap side wall: and gap side walls are arranged according to the arrangement intervals, and are arranged between the outer edges of the elastic conductive dielectric films and the periphery of the pressure induction coil.
And 160, the elastic conductive dielectric film is elastically deformed by external pressure, when the external pressure is greater than an external static pressure threshold, the pressure sensing coil senses that the pressure transmitted by the elastic conductive dielectric film reaches or is greater than a lower limit of a pressure sensing threshold, and the pressure sensing coil outputs a pressure sensing output signal.
specifically, the invention also meets the requirement of pressure duration time on the identification design so as to better avoid the false identification caused by instant false collision.
In particular, this may be implemented by a clock counter. And timing the duration of the pressure by clock counting, and really outputting a pressure sensing output signal to a processor for processing when the set duration is met.
specifically, a pressure sensing output signal of the pressure sensing coil is used as a trigger signal of the clock counter, and the clock counter is started. Whether it is a false sensing or a false touch, the trigger signal is generated as long as the pressure sensing output condition is satisfied. But at this time, the pressure sensing output signal is not transmitted to the processor, and whether the pressure sensing output signal is output or not is judged by counting through the clock counter.
And step 190, when the counting value of the clock reaches the counting period, the processor receives the pressure sensing output signal output by the pressure sensing coil.
The identification method provided by the embodiment of the invention can realize a pressure-sensitive identification mode which has a pressure detection range capable of meeting application requirements and high detection sensitivity through simple design. When the recognition device designed by the method is applied to the intelligent pen, the writing pressure can be detected, and the non-writing pressure generated when the intelligent pen is touched by mistake can not be detected.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. An identification method, characterized in that the identification method comprises:
determining a pressure sensing threshold range of a pressure sensing coil, the pressure sensing threshold range comprising: a lower pressure sensing threshold;
acquiring a preset external static pressure threshold value and a standard touch pressure value;
determining the minimum distance between the elastic conductive medium film and the pressure induction coil according to the external static pressure threshold and the elastic coefficient of the elastic conductive medium film;
determining the maximum distance between the elastic conductive medium film and the pressure induction coil according to the standard touch pressure value and the elastic coefficient of the elastic conductive medium film;
determining a set interval according to the maximum interval and the minimum interval, and arranging the elastic conductive medium film above the pressure induction coil according to the set interval;
the elastic conductive dielectric film is elastically deformed by external pressure, when the external pressure is greater than an external static pressure threshold value, the pressure sensing coil senses that the pressure transmitted by the elastic conductive dielectric film reaches or is greater than the lower limit of the pressure sensing threshold value, and the pressure sensing coil outputs a pressure sensing output signal.
2. The identification method according to claim 1, characterized in that the identification method further comprises:
a clock counter is connected behind the signal output end of the pressure sensing coil, and the relaxation time is identified according to the required pressure so as to set the counting period of the clock counter;
converting a pressure sensing output signal of a pressure sensing coil into a trigger signal, and starting clock counting by the clock counter according to the trigger signal;
and when the value counted by the clock reaches a counting period, the processor receives the pressure sensing output signal output by the pressure sensing coil.
3. The identification method according to claim 1, wherein the minimum pitch satisfies: and under the condition that the external pressure is smaller than the external static pressure threshold, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of touching the pressure induction coil is smaller than the lower limit of the pressure induction threshold.
4. The identification method according to claim 1, wherein the maximum pitch satisfies: under the condition that the external pressure is equal to the standard touch pressure value, after the elastic conductive medium film generates deformation in the vertical direction, the pressure of the touch pressure sensing coil is not less than the lower limit of the pressure sensing threshold.
5. The identification method according to claim 1, wherein the determining the set pitch according to the maximum pitch and the minimum pitch is specifically:
determining sensitivity design parameters of the identification device;
and determining the optimal value of the distance to be the set distance according to the sensitivity design parameter, the maximum distance and the minimum distance.
6. The identification method according to claim 1, characterized in that the method further comprises:
and arranging a gap side wall according to the arrangement interval, wherein the gap side wall is arranged between the outer edge of the elastic conductive dielectric film and the periphery of the pressure induction coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893642.1A CN112539858A (en) | 2019-09-20 | 2019-09-20 | Identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893642.1A CN112539858A (en) | 2019-09-20 | 2019-09-20 | Identification method |
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| CN112539858A true CN112539858A (en) | 2021-03-23 |
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| CN201910893642.1A Pending CN112539858A (en) | 2019-09-20 | 2019-09-20 | Identification method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565632A (en) * | 1995-02-20 | 1996-10-15 | Wacom Co., Ltd. | Pressure sensitive stylus pen |
| CN102662573A (en) * | 2012-03-24 | 2012-09-12 | 上海量明科技发展有限公司 | Method and terminal for obtaining options by pressing |
| CN204740575U (en) * | 2015-06-29 | 2015-11-04 | 深圳纽迪瑞科技开发有限公司 | Touch equipment is with pressing recognition device |
| CN105807997A (en) * | 2016-03-08 | 2016-07-27 | 北京珠穆朗玛移动通信有限公司 | Touch screen sensitivity adjustment method and device |
| CN106354321A (en) * | 2016-09-05 | 2017-01-25 | 芯海科技（深圳）股份有限公司 | Pressure-sensing button identification method |
| CN108593152A (en) * | 2018-04-28 | 2018-09-28 | 北京奇禄管理咨询有限公司 | A kind of design method of pressure sensitivity identification device and application |
-
2019
- 2019-09-20 CN CN201910893642.1A patent/CN112539858A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565632A (en) * | 1995-02-20 | 1996-10-15 | Wacom Co., Ltd. | Pressure sensitive stylus pen |
| CN102662573A (en) * | 2012-03-24 | 2012-09-12 | 上海量明科技发展有限公司 | Method and terminal for obtaining options by pressing |
| CN204740575U (en) * | 2015-06-29 | 2015-11-04 | 深圳纽迪瑞科技开发有限公司 | Touch equipment is with pressing recognition device |
| CN105807997A (en) * | 2016-03-08 | 2016-07-27 | 北京珠穆朗玛移动通信有限公司 | Touch screen sensitivity adjustment method and device |
| CN106354321A (en) * | 2016-09-05 | 2017-01-25 | 芯海科技（深圳）股份有限公司 | Pressure-sensing button identification method |
| CN108593152A (en) * | 2018-04-28 | 2018-09-28 | 北京奇禄管理咨询有限公司 | A kind of design method of pressure sensitivity identification device and application |
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Application publication date: 20210323 |
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