CN107171660A - Non-contact inductive is switched - Google Patents
Non-contact inductive is switched Download PDFInfo
- Publication number
- CN107171660A CN107171660A CN201710282520.XA CN201710282520A CN107171660A CN 107171660 A CN107171660 A CN 107171660A CN 201710282520 A CN201710282520 A CN 201710282520A CN 107171660 A CN107171660 A CN 107171660A
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- CN
- China
- Prior art keywords
- module
- inductive switch
- visible
- signal
- visible light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
-
- 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
- H03K17/945—Proximity switches
-
- 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
- H03K17/945—Proximity switches
- H03K2017/9455—Proximity switches constructional details
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Electronic Switches (AREA)
Abstract
The present invention relates to switch control field, a kind of non-contact inductive switch is disclosed, the inductive switch includes：Switch module；VISIBLE LIGHT EMISSION module, for sending visible ray；Optical Receivers, is electric signal for receiving the visible ray, and by the visible-light treatment；And processing module, for controlling the switch module to switch according to the electric signal.The inductive switch ensure that the accuracy of sensing control, can greatly reduce the false triggering rate of inductive switch.
Description
Technical field
The present invention relates to switch control field, switched more particularly to non-contact inductive.
Background technology
Existing noncontact inductive switch is based primarily upon infrared technique, and main principle is as follows：Switchgear is actively launched red
Outside line, infrared ray runs into after external object stops and reflected, and it is red that the infrared remote receiver detection on switchgear is reflected
Outside line, is converted to after electric signal, the opening and closing of controlling switch.Such as the infrared sensing switch in induction tap, horse of washing by water
Infrared sensing switch of bucket etc..
Existing infrared sensing switch haves the shortcomings that easy false triggering.Such as in toilet, people is actual to be not used urinal,
And when simply by above-mentioned urinal, easily flushing switch of the triggering based on infrared induction, causes water resource waste.This is mainly
Because infrared inductor can all respond the infrared signal in its induction range, and it can not judge whether using correlation to set
It is standby.Also, the infrared sensing switch based on reflection, is caused the problem of also can be because of infrared reflection angle, even if being made using
When using relevant device, infrared sensing switch can not accurately and timely be triggered, in actual life, also be frequently encountered when human hand is reached
When under infrared sensing switch, infrared sensing switch can not stand and trigger, it usually needs the angle of adjustment hand, can just open sensing
Close triggering.In addition, the more difficult accurate triggering of infrared inductor of the prior art.Such as when washing one's hands, because user does not know red
Position where outer sensing, therefore, people will be manually placed under infrared induction tap, general that rolling all around is started to trigger
Switch, opens tap, in the hand dryer using infrared induction, also all around to shake ability trigger switch of starting, open
Hand dryer.
The existing infrared sensing switch of the above can make troubles to user.
The content of the invention
The invention aims to overcome false triggering that prior art is present and the problem of can not accurately trigger there is provided
Non-contact inductive is switched, and the inductive switch can be prevented effectively from false triggering, and easy to use.
To achieve these goals, the present invention provides a kind of non-contact inductive switch, and the inductive switch includes：Switching molding
Block；VISIBLE LIGHT EMISSION module, for sending visible ray；Optical Receivers, for receiving the visible ray, and by the visible ray
It is processed as electric signal；And processing module, for controlling the switch module to switch according to the electric signal.
Wherein, the Optical Receivers includes：Photoelectric detector, for being electric signal by the visible light transformation received；
And process circuit, for handling the electric signal.
Wherein, the process circuit includes：Amplifying circuit, filter circuit and comparison circuit.
Wherein, the VISIBLE LIGHT EMISSION module and the Optical Receivers are oppositely disposed.
Wherein, the distance between the VISIBLE LIGHT EMISSION module and the Optical Receivers are 1-10cm.
Wherein, the VISIBLE LIGHT EMISSION module includes：Visible light source；And drive circuit, for sending drive signal,
To control the visible light source to send the visible ray.
Wherein, the drive signal is high level signal, low level signal, low and high level mixed signal or preset frequency
Square-wave signal.
Wherein, when the Optical Receivers receives the visible ray, the processing module controls the switch module
Close, when the Optical Receivers does not receive the visible ray, the processing module controls the switch module to open；Institute
The frequency for stating the electric signal that processing module is exported according to the Optical Receivers judges whether to receive the visible ray.
Wherein, when the Optical Receivers does not receive the scheduled time of state maintenance of the visible ray, the processing
Module controls the switch module to open.
Wherein, the switch module includes relay.
Pass through above-mentioned technical proposal, it is seen that light emission module is continuously sent out over visible ray, thus easily determine induction region,
And the induction region of the inductive switch is defined within the specific limits, and the inductive switch can also greatly reduce the external world
Interference, so as to ensure sensing control accuracy, the false triggering rate of inductive switch can be greatly reduced, work as user
When hand or other objects are put into above-mentioned zone, you can be turned on and off switch.
Brief description of the drawings
Fig. 1 is the structured flowchart of non-contact inductive switch according to an embodiment of the invention；
Fig. 2 is the structured flowchart of VISIBLE LIGHT EMISSION module in non-contact inductive switch according to an embodiment of the invention；
Fig. 3 is the structured flowchart of Optical Receivers in non-contact inductive switch according to an embodiment of the invention；
Fig. 4 is the structural representation of non-contact inductive switch according to an embodiment of the invention；And
Fig. 5 and Fig. 6 are to represent in non-contact inductive according to an embodiment of the invention switch drive signal and right with it
The schematic diagram for the visible ray answered
Description of reference numerals
110：VISIBLE LIGHT EMISSION module 120：Optical Receivers
130：Processing module 140：Switch module
210：Visible light source 220：Drive circuit
310：Photoelectric detector 320：Amplifying circuit
330：Filter circuit 340：Comparison circuit
1/2/3：Component
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 is the structured flowchart of non-contact inductive switch according to an embodiment of the invention.As shown in figure 1, the sensing
Switch includes：Switch module 140；VISIBLE LIGHT EMISSION module 110, for sending visible ray；Optical Receivers 120, for receiving
The visible ray, and be electric signal by the visible-light treatment；And processing module 130, for being controlled according to the electric signal
The switch module switch.Processing module can also control VISIBLE LIGHT EMISSION module to send visible ray simultaneously.
Fig. 2 is the structured flowchart of VISIBLE LIGHT EMISSION module in non-contact inductive switch according to an embodiment of the invention.
The VISIBLE LIGHT EMISSION module can be preferably included：The visible light source 210；And drive circuit 220, for sending drive
Dynamic signal, to control the visible light source to send the visible ray.
The visible light source 210 can include LED, incandescent lamp, electricity-saving lamp, fluorescent lamp etc., but the present invention is not limited
In this, any device for sending visible ray can be as the visible light source in the present invention.
The drive signal is loaded on visible ray through overdrive circuit 220, and driving visible light source sends visible ray.Such as
Shown in Fig. 5, drive signal can be high level signal, or low level signal, and high level signal or low level signal can rise
To the effect of triggering, for example, drive circuit 220 is configurable to current drive control termination when receiving high level or low level,
High level is exported, so that visible light source 210 is luminous.
As a preferred embodiment, as shown in fig. 6, drive signal can for low and high level mix signal, or
Square-wave signal of person's certain frequency etc..Now, using the signal with certain rule and feature, such as letter of low and high level mixing
Number, or certain frequency square-wave signal etc., be conducive to improving environment resistant light interference performance.Above-said current signal can be with the place of slave unit
Manage module section output.
Fig. 3 is the structured flowchart of Optical Receivers in non-contact inductive switch according to an embodiment of the invention.Such as Fig. 3
Shown, the Optical Receivers includes：Photoelectric detector 310, for being electric signal by the visible light transformation received, photoelectricity is visited
Surveying device can be using photodiode, phototriode, photo resistance etc., but the present invention is not limited thereto；And process circuit,
For handling the electric signal.
The process circuit can also be preferably included：Amplifying circuit 320, filter circuit 330 and comparison circuit 340.
Switch module 140 can preferably include relay, can also including controllable silicon etc. switching device, these all this
Within the scope of invention.It is described when the Optical Receivers 120 receives the visible ray that VISIBLE LIGHT EMISSION module 110 is sent
Processing module can control the switch module to close, when the Optical Receivers does not receive the visible ray, the place
Managing module controls the switch module to open.For example, could be arranged to when receiving module receives the visible ray, relay
Open, switch module is closed, and work as has shelter between VISIBLE LIGHT EMISSION module 110 and Optical Receivers 130, light-receiving
When module 120 can not receive the visible ray, processing module control relay closure, so that switch module is opened.
Now, photoelectric detector 310 receives visible ray, and will be seen that light is converted to electric signal, and the electric signal is by amplification
Circuit 320 amplifies with after the filtering process of filter circuit 330, obtains being more beneficial for the electric signal of subsequent treatment, comparison circuit 340 enters
One step is converted to the electric signal after filtered processing the data signal of suitable processing module processing.
For example, when the drive signal is for low and high level hybrid circuit as shown in Figure 6 or the square wave with certain frequency
During signal, drive circuit 220 drives visible light source to send with certain frequency or certain rule according to such drive signal
Visible ray, can should be the visible ray of the appreciable micro- flicker of naked eyes with the visible ray of certain frequency or certain rule,
Can be that naked eyes can not perceive the visible ray of flicker.This has certain frequency or the visible ray of certain rule by photoelectric detector
After reception, the electric signal with certain frequency or certain rule can be converted into, after the electric signal is handled through comparison circuit 340,
The result of processing is exported to processing module 130, processing module can judge current receive according to the result of comparison circuit 340
Whether the frequency of the visible ray arrived has other rules.For example, processing module can from Optical Receivers export by from
Manage after the electric signal after this, according to detecting the time interval of rising edge or trailing edge, and detect in the given time
The quantity of rising edge or trailing edge, it is corresponding with low and high level mixed signal or square-wave signal to judge currently whether to receive
Visible ray.Thus, processing module can judge to have received when judging that currently received visible ray has certain frequency or rule
The visible ray sent to the VISIBLE LIGHT EMISSION module 110.
Thus, it is possible to reduce because of the interference that the visible ray in environment is brought, it is to avoid false triggering, for example, when using in the fire hose
When on head, the lamp of toilet can be avoided to open, flashlight irradiation or sunlight irradiation, flash lamp etc. trigger inductive switch, and
Open tap, so as to avoid waste water resource.
Further, it may be arranged as light processing module to judge when having been received by the visible ray of predetermined period number, judge
It is true so as to the control that further improves the inductive switch to receive the visible ray that VISIBLE LIGHT EMISSION module 110 is sent
Parasexuality.
Also can preferentially it be set to, when the Optical Receivers does not receive the scheduled time of state maintenance of the visible ray
When, the processing module controls the switch module to open.
Fig. 4 is the structural representation of non-contact inductive switch according to an embodiment of the invention.As shown in figure 4, this hair
The structure of bright non-contact inductive switch can be to include component 1, component 2 and component 3.Processing module and switch module can be with
It is arranged in component 3, component 1 and component 2 can set VISIBLE LIGHT EMISSION module and Optical Receivers respectively.The wherein He of component 1
Component 2 is placed face-to-face, and is preferably on same horizontal plane, and component 1 and component 2 are placed on component above, component 1
There are the distance between a groove, and them at least to set aside concerns a finger between component 2.
Now, as shown in figure 4, the VISIBLE LIGHT EMISSION module and the Optical Receivers can be oppositely disposed.
Wherein, the distance between the VISIBLE LIGHT EMISSION module and the Optical Receivers are preferably 1-10cm, so that institute
The daily life fields such as wash platform, toilet flushometer can be more easily applied to by stating inductive switch, also, in the distance
In the range of, inductive switch is disturbed by environmental factor can also be down to relatively low level.Certainly, it is seen that light emission module and light-receiving
The distance between module can also be bigger, as long as the distance can allow Optical Receivers be connected to what VISIBLE LIGHT EMISSION module was sent
Visible ray, for example, 15cm, 20cm, 1m etc., but as distance increases, the possibility being interfered is also bigger.
Below by taking the structure in Fig. 4 as an example, illustrate in actual applications, the operation principle of the inductive switch.Wherein, may be used
See that light emission module is arranged in component 1, it is seen that Optical Receivers is arranged in component 2.
During using the inductive switch, component 1 constantly sends visible light signal to component 2, and component 2 receives visible ray letter
After number, electric signal is converted optical signals to, by electric signal output to the processing module in component 3.Processing module in component 3 is sentenced
It is disconnected to learn that component 2 has always and receive the visible light signal that component 1 is sent, relay is in open mode, that is, switch quilt
Close.
When hand or other objects are placed on a period of time between component 1 and component 2 by user, this period component 2 not
Visible light signal is received, component 2 fails to send the electric signal containing visible light signal information.Then, the processing mould in component 3
Block judges to fail to receive visible light signal for some time by computing, therefore, once by thing between determination component 1 and component 2
Body blocks a period of time, and then inductive switch turns on relay, that is, what is switched is unlocked.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited thereto.At this
In the range of the technology design of invention, a variety of simple variants, including each particular technique can be carried out to technical scheme
Feature is combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention is to various possible combinations
No longer separately illustrate.But these simple variants and combination should equally be considered as content disclosed in this invention, belong to the present invention
Protection domain.
Claims (10)
1. a kind of non-contact inductive switch, it is characterised in that the inductive switch includes：
Switch module；
VISIBLE LIGHT EMISSION module, for sending visible ray；
Optical Receivers, is electric signal for receiving the visible ray, and by the visible-light treatment；And
Processing module, for controlling the switch module to switch according to the electric signal.
2. inductive switch according to claim 1, it is characterised in that the Optical Receivers includes：
Photoelectric detector, for being electric signal by the visible light transformation received；And
Process circuit, for handling the electric signal.
3. inductive switch according to claim 2, it is characterised in that the process circuit includes：Amplifying circuit, filtered electrical
Road and comparison circuit.
4. inductive switch according to claim 1, it is characterised in that the VISIBLE LIGHT EMISSION module and the light-receiving mould
Block is oppositely disposed.
5. inductive switch according to claim 4, it is characterised in that the VISIBLE LIGHT EMISSION module and the light-receiving mould
The distance between block is 1-10cm.
6. the inductive switch according to any one of claim 1-5, it is characterised in that the VISIBLE LIGHT EMISSION module bag
Include：
Visible light source；And
Drive circuit, for sending drive signal, to control the visible light source to send the visible ray.
7. inductive switch according to claim 6, it is characterised in that the drive signal is high level signal, low level
The square-wave signal of signal, low and high level mixed signal or preset frequency.
8. the inductive switch according to any one of claim 1-5, it is characterised in that when the Optical Receivers is received
During the visible ray, the processing module controls the switch module to close, when the Optical Receivers do not receive it is described can
When seeing light, the processing module controls the switch module to open；
The frequency for the electric signal that the processing module is exported according to the Optical Receivers judges whether to receive the visible ray.
9. inductive switch according to claim 8, it is characterised in that when the Optical Receivers do not receive it is described visible
During the scheduled time of state maintenance of light, the processing module controls the switch module to open.
10. the inductive switch according to any one of claim 1-5, it is characterised in that the switch module includes relay
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282520.XA CN107171660A (en) | 2017-04-26 | 2017-04-26 | Non-contact inductive is switched |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282520.XA CN107171660A (en) | 2017-04-26 | 2017-04-26 | Non-contact inductive is switched |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107171660A true CN107171660A (en) | 2017-09-15 |
Family
ID=59813249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710282520.XA Pending CN107171660A (en) | 2017-04-26 | 2017-04-26 | Non-contact inductive is switched |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107171660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334579A (en) * | 2018-11-23 | 2019-02-15 | 四川长虹电器股份有限公司 | Forget object and reminds containing box and with the automobile for forgetting object prompting function |
| CN109889190A (en) * | 2018-12-27 | 2019-06-14 | 成都英萨传感技术研究有限公司 | A kind of contactless method of controlling switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689596Y (en) * | 2004-03-13 | 2005-03-30 | 惠州雷士工业发展有限公司 | Anti-interference non-contact switches |
| CN106209052A (en) * | 2016-08-26 | 2016-12-07 | 苏州霍曼洁净门业科技有限公司 | Infrared sensing switch |
| CN106374902A (en) * | 2016-11-08 | 2017-02-01 | 广东顺德鲁棒智能技术有限公司 | Infrared temperature measurement-based multifunctional human sensing switch and implementation method therefor |
-
2017
- 2017-04-26 CN CN201710282520.XA patent/CN107171660A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689596Y (en) * | 2004-03-13 | 2005-03-30 | 惠州雷士工业发展有限公司 | Anti-interference non-contact switches |
| CN106209052A (en) * | 2016-08-26 | 2016-12-07 | 苏州霍曼洁净门业科技有限公司 | Infrared sensing switch |
| CN106374902A (en) * | 2016-11-08 | 2017-02-01 | 广东顺德鲁棒智能技术有限公司 | Infrared temperature measurement-based multifunctional human sensing switch and implementation method therefor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334579A (en) * | 2018-11-23 | 2019-02-15 | 四川长虹电器股份有限公司 | Forget object and reminds containing box and with the automobile for forgetting object prompting function |
| CN109889190A (en) * | 2018-12-27 | 2019-06-14 | 成都英萨传感技术研究有限公司 | A kind of contactless method of controlling switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200414 Address after: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Applicant after: MEIZHI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A (located in Shenzhen Qianhai business secretary Co. Ltd.) Applicant before: MIDEA SMART HOME TECHNOLOGY Co.,Ltd. Applicant before: MIDEA GROUP Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| CB02 | Change of applicant information |
Address after: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Applicant after: Meizhi Optoelectronic Technology Co., Ltd Address before: 335400 No. 1 Industrial Park, Yingtan, Jiangxi, Guixi Applicant before: MEIZHI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |
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| RJ01 | Rejection of invention patent application after publication |