CN111431521A - Waterproof key signal detection method and false touch prevention method for intelligent camera - Google Patents
Waterproof key signal detection method and false touch prevention method for intelligent camera Download PDFInfo
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- CN111431521A CN111431521A CN201910018180.9A CN201910018180A CN111431521A CN 111431521 A CN111431521 A CN 111431521A CN 201910018180 A CN201910018180 A CN 201910018180A CN 111431521 A CN111431521 A CN 111431521A
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- touch
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- intelligent camera
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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Abstract
The invention relates to the technical field of intelligent camera shooting, in particular to a waterproof key signal detection method of an intelligent camera, which comprises a shell and a lens, the front center position of the shell is clamped with a lens, the inner cavity of the shell is clamped with a circuit board, the circuit board comprises a control chip, a touch key and a matched circuit module, and the touch key and the matched circuit module form a reference capacitor Cp, the touch key is attached to the inner wall of the shell, the part of the touch key, which is tightly attached to the shell, is used as a medium, the invention tightly attaches the touch key to the inner wall of the shell, because the part of the shell which is tightly attached by the touch key is used as a medium, when a finger touches the shell, an induction capacitor Cf is formed, and by touching the medium by the finger, can control, not only can reach waterproof sealing, convenient operation improves the security when intelligent camera is applied to outdoor scene greatly moreover.
Description
Technical Field
The invention relates to the technical field of intelligent camera shooting, in particular to a waterproof key signal detection method and a false touch prevention method for an intelligent camera.
Background
At present, all intelligent cameras are provided with a reset key, the waterproof performance is particularly important for outdoor products, the existence of the reset key brings great adverse effect on the waterproof performance, generally, a small window is formed in the reset key position of a machine body, then a small cover is added, a silica gel sealant is used, the small cover is locked through a screw to compress a sealing element for waterproof sealing, however, patching is carried out after all, the performance of the mode is very limited, only IPX5 can be achieved generally, and the IPX7 is difficult to achieve;
in practical applications, we often find that false triggering often occurs when the capacitive touch is exposed to moisture or water drops, and the current problem of water dripping and running cannot be solved by the traditional capacitive touch scheme, but the key of the waterproof camera is inevitably used at present.
Disclosure of Invention
The invention aims to provide a waterproof key signal detection method and a false touch prevention method for an intelligent camera, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
designing a waterproof key signal detection method of an intelligent camera, which comprises a shell and a lens, wherein the lens is clamped at the center of the front surface of the shell, a circuit board is clamped in an inner cavity of the shell, the circuit board comprises a control chip, a touch key and a matched circuit module, the touch key and the matched circuit module form a reference capacitor Cp, the touch key is attached to the inner wall of the shell, and the part of the touch key, which is tightly attached to the shell, is used as a medium;
step one, an induction capacitor Cf is formed when a finger touches a medium, the induction capacitor Cf is connected with a reference capacitor in parallel to cause the change of the total capacitor, and the change of the total capacitor causes the change of the internal oscillation frequency or the charge-discharge time of a control chip;
step two, when the change of the charging and discharging time exceeds a threshold value tau 1, judging the touch action as one long-time pressing, and controlling a chip to issue a command corresponding to the long-time pressing touch;
step three, when the charging and discharging time changes once within a set clock period t1, wherein the period is tau 0, and tau 0 is smaller than tau 1 by one to two orders of magnitude, the charging and discharging time is judged to be one-touch, and the control chip (301) issues a command corresponding to the one-touch;
step four, when the charging and discharging time changes with a period of tau 0 twice in a given clock period t1, the tau 0 is smaller than tau 1 by one to two orders of magnitude, and the interval time t2 between two times is smaller than t1 by one to two orders of magnitude, the double touch is judged to be one time, and the control chip issues a command corresponding to the double touch.
A method for preventing a waterproof key signal of an intelligent camera from being touched by mistake comprises the following steps;
s1, firstly, detecting the touch function of the touch key;
s2, the touch key information collected by the coprocessor is communicated and interacted with the main control chip through the IIC bus, and the information collection and confirmation of the current waterproof key are realized;
and S3, acquiring related data of the protection sensor and the shielding sensor through the same application, comparing the acquired data with the data acquired by the current touch, and calibrating to realize the false triggering shielding of dripping and running water.
Preferably, in S3, the purpose of the shielding sensor is to establish an electric field around the touch sensor for attenuating the effect of the water droplets.
Preferably, in S3, the protection sensor is a copper trace surrounding all sensors on the circuit board for detecting the presence of water flow.
Preferably, in S3, the raw count measured by the guard sensor will be the same as the finger touch value or even higher, when the guard sensor detects water flow, to prevent the other sensors from being triggered.
The invention provides a waterproof key signal detection method and a false touch prevention method for an intelligent camera, which have the beneficial effects that:
1. according to the intelligent camera, the touch keys are tightly attached to the inner wall of the shell, the shell part tightly attached to the touch keys serves as a medium, the induction capacitor Cf is formed when a finger touches the induction capacitor Cf, the medium is touched by the finger, the intelligent camera can be controlled, the waterproof sealing can be achieved, the operation is convenient, and the safety of the intelligent camera in outdoor scenes is greatly improved;
2. according to the invention, through the acquisition of related data of the protection sensor and the shielding sensor, the data of the touch key information acquired by the coprocessor is compared and calibrated, and the avoidance of the false triggering of dripping and running water of the touch key is realized, so that the normal function of the touch key is realized.
Drawings
FIG. 1 is a schematic view of the housing structure of the present invention;
FIG. 2 is a schematic diagram of the control chip of the present invention;
fig. 3 is a schematic view of the principle flow structure of the present invention.
In the figure: 1. the device comprises a shell, 2, a lens, 3, a control chip, 301, a control chip, 302, a touch key, 303 and a matched circuit module.
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.
Referring to fig. 1-3, a method for detecting a waterproof key signal of an intelligent camera includes a housing 1 and a lens 2, the lens 2 is clamped at the center of the front face of the housing 1, a circuit board 3 is clamped in the inner cavity of the housing 1, the circuit board 3 includes a control chip 301, a touch key 302 and a matched circuit module 303, the touch key 302 and the matched circuit module 303 form a reference capacitor Cp, the touch key 302 is attached to the inner wall of the housing 1, and the part of the touch key 302, which is tightly attached to the housing 1, serves as a medium, and includes the following steps;
firstly, an induction capacitor Cf is formed when a finger touches a medium, the induction capacitor Cf is connected with a reference capacitor in parallel to cause the change of the total capacitor, and the change of the total capacitor causes the change of the internal oscillation frequency or the charge-discharge time of the control chip 301;
step two, when the change of the charging and discharging time exceeds a threshold value tau 1, judging the touch action as one long press, and sending a command corresponding to the long press touch by the control chip 301, wherein the touch action as one long press can be judged;
step three, when the charging and discharging time changes once in a period of tau 0 within a given clock period t1, and tau 0 is smaller than tau 1 by one to two orders of magnitude, the charging and discharging time is judged to be one-touch, and the control chip 301 issues a command corresponding to the one-touch, for example, a confirmation command;
step four, when the charging and discharging time changes with a period of tau 0 twice in a given clock period t1, the tau 0 is smaller than tau 1 by one to two orders of magnitude, and the interval time t2 of the two times is smaller than t1 by one to two orders of magnitude, the charging and discharging time is judged to be one double touch, and the control chip issues a command corresponding to the double touch, such as a command for waking up the equipment.
The utility model provides a method is touched to mistake of preventing of waterproof button signal of smart camera which characterized in that: comprises the following steps;
s1, firstly, detecting the touch function of the touch key;
s2, the touch key information collected by the coprocessor is communicated and interacted with the main control chip through the IIC bus, and the information collection and confirmation of the current waterproof key are realized;
s3, acquiring related data of a protection sensor and a shielding sensor through the same application, comparing the acquired data with the data acquired by current touch, and calibrating to realize false triggering shielding of water drops and running water, wherein the purpose of the shielding sensor is to establish an electric field around the touch sensor for weakening the influence generated by the water drops, the protection sensor is a copper wire which surrounds all sensors on a circuit board and is used for detecting the existence of the running water, and the original count measured by the protection sensor is the same as the finger contact value or even higher, and is used for preventing other sensors from being triggered when the protection sensor detects the running water.
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 considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a waterproof key signal detection method of smart camera, includes shell (1) and camera lens (2), the positive central point of shell (1) puts joint has camera lens (2), the inner chamber joint of shell (1) has circuit board (3), circuit board (3) are including control chip (301), touch button (302) and supporting circuit module (303), and touch button (302) and supporting circuit module (303) constitute benchmark electric capacity Cp, the laminating of the inner wall of touch button (302) and shell (1), touch button (302) are hugged closely the part of shell (1) is as the medium, its characterized in that: comprises the following steps;
firstly, an induction capacitor Cf is formed when a finger touches a medium, the induction capacitor Cf is connected with a reference capacitor in parallel to cause the change of the total capacitor, and the change of the total capacitor causes the change of the internal oscillation frequency or the charge-discharge time of a control chip (301);
step two, when the change of the charging and discharging time exceeds a threshold value tau 1, judging the touch action as one long press, and sending a command corresponding to the long press touch by a control chip (301);
step three, when the charging and discharging time changes once within a set clock period t1, wherein the period is tau 0, and tau 0 is smaller than tau 1 by one to two orders of magnitude, the charging and discharging time is judged to be one-touch, and the control chip (301) issues a command corresponding to the one-touch;
step four, when the charging and discharging time changes with a period of tau 0 twice in a given clock period t1, the tau 0 is smaller than tau 1 by one to two orders of magnitude, and the interval time t2 between two times is smaller than t1 by one to two orders of magnitude, the double touch is judged to be one time, and the control chip issues a command corresponding to the double touch.
2. The utility model provides a method is touched to mistake of preventing of waterproof button signal of smart camera which characterized in that: comprises the following steps;
s1, firstly, detecting the touch function of the touch key;
s2, the touch key information collected by the coprocessor is communicated and interacted with the main control chip through the IIC bus, and the information collection and confirmation of the current waterproof key are realized;
and S3, acquiring related data of the protection sensor and the shielding sensor through the same application, comparing the acquired data with the data acquired by the current touch, and calibrating to realize the false triggering shielding of dripping and running water.
3. The method for preventing the false touch of the waterproof key signal of the intelligent camera according to claim 2, characterized in that: the purpose of the shield sensor is to create an electric field around the touch sensor to attenuate the effects of water droplets in S3.
4. The waterproof key signal detection method of the intelligent camera according to claim 2, characterized in that: in S3, the protection sensor is a copper trace that surrounds all sensors on the circuit board for detecting the presence of water flow.
5. The waterproof key signal detection method of the intelligent camera according to claim 2, characterized in that: in S3, the protection sensor will measure the same raw count as the finger touch value, or even higher, to prevent triggering of other sensors when the protection sensor detects water flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018180.9A CN111431521A (en) | 2019-01-09 | 2019-01-09 | Waterproof key signal detection method and false touch prevention method for intelligent camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018180.9A CN111431521A (en) | 2019-01-09 | 2019-01-09 | Waterproof key signal detection method and false touch prevention method for intelligent camera |
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| CN111431521A true CN111431521A (en) | 2020-07-17 |
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| CN201910018180.9A Pending CN111431521A (en) | 2019-01-09 | 2019-01-09 | Waterproof key signal detection method and false touch prevention method for intelligent camera |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202429A (en) * | 2020-10-15 | 2021-01-08 | 桂林优利特医疗电子有限公司 | Multifunctional key control system and control method thereof |
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| US20120050214A1 (en) * | 2010-08-24 | 2012-03-01 | Viktor Kremin | Reducing water influence on a touch-sensing device |
| CN102571059A (en) * | 2012-01-06 | 2012-07-11 | 陈建平 | Water-pouring-preventing capacitive touch button |
| CN104866226A (en) * | 2015-05-26 | 2015-08-26 | 努比亚技术有限公司 | Terminal device and method for controlling same |
| CN204719731U (en) * | 2015-06-16 | 2015-10-21 | 深圳警翼数码科技有限公司 | A kind of law-enforcing recorder with waterproof touch key-press function |
| CN105339877A (en) * | 2013-07-04 | 2016-02-17 | 索尼公司 | Finger detection on touch screens for mobile devices |
| CN205921576U (en) * | 2016-07-06 | 2017-02-01 | 深圳市阿美特科技有限公司 | A waterproof touch button for intelligent water gauge |
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2019
- 2019-01-09 CN CN201910018180.9A patent/CN111431521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120050214A1 (en) * | 2010-08-24 | 2012-03-01 | Viktor Kremin | Reducing water influence on a touch-sensing device |
| CN102571059A (en) * | 2012-01-06 | 2012-07-11 | 陈建平 | Water-pouring-preventing capacitive touch button |
| CN105339877A (en) * | 2013-07-04 | 2016-02-17 | 索尼公司 | Finger detection on touch screens for mobile devices |
| CN104866226A (en) * | 2015-05-26 | 2015-08-26 | 努比亚技术有限公司 | Terminal device and method for controlling same |
| CN204719731U (en) * | 2015-06-16 | 2015-10-21 | 深圳警翼数码科技有限公司 | A kind of law-enforcing recorder with waterproof touch key-press function |
| CN205921576U (en) * | 2016-07-06 | 2017-02-01 | 深圳市阿美特科技有限公司 | A waterproof touch button for intelligent water gauge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112202429A (en) * | 2020-10-15 | 2021-01-08 | 桂林优利特医疗电子有限公司 | Multifunctional key control system and control method thereof |
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