CN102013885A - Wall-mounted power supply capacitance contact switch of general diagnostic system - Google Patents
Wall-mounted power supply capacitance contact switch of general diagnostic system Download PDFInfo
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- CN102013885A CN102013885A CN 201010601756 CN201010601756A CN102013885A CN 102013885 A CN102013885 A CN 102013885A CN 201010601756 CN201010601756 CN 201010601756 CN 201010601756 A CN201010601756 A CN 201010601756A CN 102013885 A CN102013885 A CN 102013885A
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Abstract
The invention discloses a wall-mounted power supply capacitance contact switch, comprising a single chip, a capacitive touch sensing control chip, capacitance sensors, a control power supply circuit and a switch, wherein the capacitance sensors are tightly attached to the groove, which is used for hanging inspection mirrors, of a wall-mounted plate, and the number of the inspection mirrors is consistent to the number of the capacitance sensors. The power supply circuit supplies power for each inspection mirror. One electrode is led out from the inside of the sensing control chip and is connected to a position needed to be touched, the control chip emits an electric field with unchanged magnitude, and the electric field charges the capacitance in the electrode plate by the electrode, and when a conductive object approaches to the touch position, the magnitude of the electric field is changed, and the charging current for the capacitance is changed; and the change value of potential drop of the capacitance can be calculated along with the change of the electric field after the capacitance is charged for t time according to the formula, whether the object approaches to the sensor can be judged according to the voltage change of the capacitance, so as to control whether to switch on or off the related power supply.
Description
Technical field
The invention relates to the capacitive touch switch of the hanging power supply of wall hanging board upper wall in the full section diagnostic system.
Background technology
The control mode of traditional full section diagnostic system wall hanging power supply is generally mechanical switch control, needs when checking mirror the doctor manually opened and cut off the electricity supply inconvenience during use using.
Summary of the invention
Check the power supply of mirror in the full section of the may command of the present invention diagnostic system, judge to check whether mirror hangs over the power supply that cuts off or open the coherence check mirror on the wall hanging board of system of full section by this switch, easy to use, quick.
Wall hanging power capacitor contact-making switch of the present invention, it comprises single-chip microcomputer, capacitance touch sensing control chip, capacitance sensor, control power circuit, switch composition.Capacitance touch sensing control chip is used for to the capacitance sensor charging, and detecting its magnitude of voltage to capacitance sensor emission electric field behind certain hour, makes the control reaction when magnitude of voltage changes.Capacitance sensor is used for detecting whether the metal object contact is arranged, and when metal object was close, its charging rate can be accelerated, thereby changes original magnitude of voltage.
Description of drawings
Fig. 1 is the hardware configuration schematic block diagram of the embodiment of the invention.
Fig. 2 is the software approach flow chart of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is carried out set forth in detail.
This energy supply control module is by single-chip microcomputer, capacitance touch sensing control chip, and some capacitance sensors composition, in order to realize the function of touch controls mains switch.Single-chip microcomputer adopts the UPD78F series of NEC Corporation, and the capacitance sensing chip adopts the capacitive sensing control chip LDS61 series based on field effect of IDT company, and each capacitance sensor adds the connection lead by two sheet metals and constitutes.
Be used to hang the groove of checking mirror as what Fig. 1 capacitance sensor was close to wall hanging board, have several inspection mirrors just to have above several capacitance sensors are attached to.Power circuit is checked the mirror power supply to each respectively.In sensing control chip LDS61 series, pick out an electrode, this electrode is received the position that needs touch, control chip is launched fixed-size electric field, this electric field charges to the capacitor in the sheet by electrode pair, as conductive body during near touch location, the big young pathbreaker of electric field changes, just changed charging current to electric capacity, calculate electric capacity charging t after the time according to formula: i=C*d (u)/d (t), the voltage drop of electric capacity changes with the change of electric field, according to the variation of voltage on the electric capacity, can judge to have or not object proximity sensor, and then whether control opens or closes line related.
Single-chip microcomputer and capacitance sensing chip LDS61 series are by the I2C interface communication.At first single-chip microcomputer initialization, and configuration touch sensing chip.Control chip is set timer timing 1 second, and concurrent radio field picks up counting.Judge then whether timing time has arrived, send order if timing time has arrived to the sensing control chip, close electric field, the sensing control chip is read the magnitude of voltage on each road capacitance sensor chip respectively, and data are sent to single-chip microcomputer; If be less than then return previous step.Single-chip microcomputer with the data received be stored in its inner experimental data comparison, analyze the magnitude of voltage on each road capacitance sensor, whether judge magnitude of voltage above predetermined threshold, be power-on then, otherwise powered-down.Close electric field at last and turn back to and judge the timing time step.As shown in Figure 2.
Though the present invention with preferred embodiment openly as above; but embodiment and accompanying drawing are not to be used for limiting the present invention, anyly are familiar with this skill person, without departing from the spirit and scope of the invention; can do various variations or retouching from working as, but equally within protection scope of the present invention.What therefore protection scope of the present invention should be defined with the application's claim protection range is as the criterion.
Claims (2)
1. wall hanging power capacitor contact-making switch is characterized in that: it comprises single-chip microcomputer, capacitance touch sensing control chip, capacitance sensor, control power circuit, switch and forms; Described capacitance touch sensing control chip is used for to described capacitance sensor charging, and detecting its magnitude of voltage to described capacitance sensor emission electric field behind certain hour, makes the control reaction when magnitude of voltage changes; Described capacitance sensor is used for detecting whether the metal object contact is arranged, and when metal object was close, its charging rate can be accelerated, thereby changes original magnitude of voltage; Whether open or close line related by described control power circuit and then control switch.
2. the described wall hanging power capacitor of claim 1 a contact-making switch implementation method is characterized in that: at first single-chip microcomputer initialization, and configuration capacitance touch sensing control chip; Control chip is set timer timing n second, and concurrent radio field picks up counting; Judge whether timing time arrives, send order if timing time has arrived to the sensing control chip, close electric field, capacitance touch sensing control chip is read the magnitude of voltage on each road capacitance sensor chip respectively, and data are sent to single-chip microcomputer; If timing time not to return previous step; Single-chip microcomputer with the data received be stored in its inner experimental data comparison, analyze the magnitude of voltage on each road capacitance sensor, judge whether magnitude of voltage surpasses predetermined threshold, and magnitude of voltage surpasses then power-on of predetermined threshold, and magnitude of voltage does not surpass then powered-down of predetermined threshold; Close electric field at last and turn back to and judge the timing time step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010601756 CN102013885A (en) | 2010-12-23 | 2010-12-23 | Wall-mounted power supply capacitance contact switch of general diagnostic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010601756 CN102013885A (en) | 2010-12-23 | 2010-12-23 | Wall-mounted power supply capacitance contact switch of general diagnostic system |
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| CN102013885A true CN102013885A (en) | 2011-04-13 |
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| CN 201010601756 Pending CN102013885A (en) | 2010-12-23 | 2010-12-23 | Wall-mounted power supply capacitance contact switch of general diagnostic system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103462580A (en) * | 2013-09-06 | 2013-12-25 | 珠海庆鸿药业有限公司 | General diagnostic apparatus and endoscope image system thereof |
| CN103677435A (en) * | 2012-09-04 | 2014-03-26 | 原相科技股份有限公司 | Electronic switch, panel module and electronic device relevant to electronic switch |
| CN104124953A (en) * | 2013-04-25 | 2014-10-29 | 原相科技股份有限公司 | High-precision capacitive switch |
| CN106154862A (en) * | 2016-09-05 | 2016-11-23 | 深圳市中科智诚科技有限公司 | A kind of intelligent domestic system using wireless communication technique |
| CN107786193A (en) * | 2017-08-28 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of touch key-press detection method and device |
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| US20070086631A1 (en) * | 2006-01-18 | 2007-04-19 | Feitian Technologies, Co., Ltd, | Method for capturing and mapping fingerprint images and the apparatus for the same |
| CN101185782A (en) * | 2007-12-18 | 2008-05-28 | 浙江理工大学 | Alarm for finishing infusion |
| CN101221036A (en) * | 2008-01-25 | 2008-07-16 | 太原理工大学 | Capacitance chromatography imaging type ice thickness detecting device and its detecting method |
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| 《电子设计技术》 20091231 丛秋波 《新的电容式触摸控制器实现超低功耗》 第10页以及产品典型应用架构图 1-2 , 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677435A (en) * | 2012-09-04 | 2014-03-26 | 原相科技股份有限公司 | Electronic switch, panel module and electronic device relevant to electronic switch |
| CN103677435B (en) * | 2012-09-04 | 2016-12-21 | 原相科技股份有限公司 | Electrical switch and correlation surface plate module thereof and electronic installation |
| CN104124953A (en) * | 2013-04-25 | 2014-10-29 | 原相科技股份有限公司 | High-precision capacitive switch |
| CN103462580A (en) * | 2013-09-06 | 2013-12-25 | 珠海庆鸿药业有限公司 | General diagnostic apparatus and endoscope image system thereof |
| CN103462580B (en) * | 2013-09-06 | 2015-11-18 | 珠海庆鸿药业有限公司 | A kind of full section's diagnostic apparatus and sight glass image system thereof |
| CN106154862A (en) * | 2016-09-05 | 2016-11-23 | 深圳市中科智诚科技有限公司 | A kind of intelligent domestic system using wireless communication technique |
| CN107786193A (en) * | 2017-08-28 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of touch key-press detection method and device |
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Application publication date: 20110413 |