CN101908872A - Non-contact inductive switchgear and control method thereof - Google Patents
Non-contact inductive switchgear and control method thereof Download PDFInfo
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- CN101908872A CN101908872A CN2009101076647A CN200910107664A CN101908872A CN 101908872 A CN101908872 A CN 101908872A CN 2009101076647 A CN2009101076647 A CN 2009101076647A CN 200910107664 A CN200910107664 A CN 200910107664A CN 101908872 A CN101908872 A CN 101908872A
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Abstract
The invention relates to a non-contact inductive switchgear and a control method thereof. The switchgear comprises an inductive information input unit, an electric device and a control unit, wherein the inductive information input unit can input hand induction information in a non-contact way and is provided with an inductive signal output end; the electric device can move under the action of electric excitation and is provided with a fixed end and a power output end; the fixed end is connected with the device body; the power output end is at least connected with an induction information input unit and can at least drive the induction information input unit or components therein to move; the control unit receives an induction signal for inducing the induction information input unit and generates the electric excitation which can drive the electric device to move; a signal input end of the control unit is connected with the signal output end of the induction information input unit; and an electric excitation output end of the control unit is connected with an electric excitation input end of the electric device. When the distance from the hand to the surface of an induction region of the induction information input unit reaches an effective induction trigger distance H, the surface of the induction region instantaneously moves for a distance of delta distance in the direction away from the hand so as to prevent the hand from touching the surface of the induction region.
Description
Technical field
The present invention relates to a kind of switching device, particularly relate to a kind of non-contact inductive switchgear and control method thereof.
Background technology
Widely used in all kinds of known switching devices is mechanical type key switch and push-button switch, and existing electronics, electrical installation and electric equipment such as elevator button and switch on wall button belong to this type of switching device.These switching devices need staff to touch and apply certain power can realize operation, and very unhygienic, the switching device that the especially public place that many people use uses is easy to transmitted virus and bacterium.The propagation of SARA virus in 2003 has been given us a caution, and the propagation of Influenza A H1N1 all over the world at present makes people press for a kind of non-contacting inductive switch device.
Disclosed non-contact inductive switchgear, as CN 2619415Y contactless/the difunctional elevator button switch of contact, it is characterized in that the anterior female parts periphery of indent contact push-button switch on the push-button switch panel is provided with one or more pairs of infrared emission tubes and infrared receiver tube, the optoelectronic switch that infrared emission tube and infrared receiver tube are formed is in parallel with the electric shock of contact push-button switch.What also have CN 2909701Y electric switch exempts to touch light blocking induction switch structure, it is characterized in that, electric switch is provided with at least more than one depressed part, be provided with optical inductor in the depressed part, optical inductor is made up of luminescence component that is face-to-face installation and receiving unit, receiving unit receives the light that luminescence component sent, and receiving unit is connected with a signal deteching circuit, and this signal deteching circuit and be connected with a control circuit; When wherein a receiving unit can't receive the light of luminescence component, this receiving unit will transmit light blocking sensing signal and give signal deteching circuit, signal deteching circuit sends this sensing signal to control circuit again, and control circuit is according to the ON/OFF action of this light blocking sensing signal control electric switch.The advantage of this class non-contact inductive switchgear is the propagation that contactless inductive operation can prevent virus and bacteria, certain fail safe is arranged, the shortcoming of CN 2909701Y is that light emission component and receiving unit are very near apart from button area, staff needs lentamente operation carefully, will touch button Face slightly because of carelessness, still have an opportunity to contact virus, lost the meaning of Touchless manipulation.The shortcoming of CN2909701Y is that light emission component and receiving unit are far away apart from button area, with the right chance that can reduce the touching button area, but it is depressed in the very dark inductive spacing in surface and gives a kind of sense of insecurity of people, function character functional character on the button is difficult to see clearly on certain angle, needs very big space.
The opposite inductive switch based on the infrared reflection principle of a kind of and light blocking inductive switch is arranged, in order to strengthen the reliability that the infrared reflection induction triggers, must the distance of reaction setting is far away, generally between 30mm to 50mm, this also can produce near the people of switch or object to the switch false triggering may, and be difficult to make switch combination as multidigit switch on wall, elevator and lathe button class.
Also have that a kind of staff and induction electrode are approaching to be made the induction electrode changes in capacitance and produce the noncontact induction information based on detecting, and send key information after treatment for sensor circuit this message transmission, as the contactless touch switch structure-improved of patent publication No. CN 201243272Y, " when finger contacts the induction zone of described medium translation interface 3 gently; change the dielectric constant in the induction zone; starting switch " by electronic switch, its operation remains touch-sensitive area (as similar touch-screen principles such as electronics PDA products), increases stability and reliability with this.In addition, the touch type electronic switch on wall of a kind of face glass of selling on the market also is based on this principle, and just the distance between its induction electrode and the staff is the thickness of glass.If induction electrode is imported this principle of induction information to be used in the complete non-contacting inductive switch, must increase the actual induction distance between induction electrode and the staff, improve induction sensitivity, it is big more to imitate distance of reaction, be not easy misconnection more and contact the induction electrode covering, manipulate Vietnamese side just, but antijamming capability can be more and more lower, make reliability reduce.Therefore, this induction electrode formula switch is difficult to really accomplish noncontact induction control because distance of reaction and reliability concern problem.
This shows, noncontact inductive switch operating principle is in the prior art: after staff has reached near the induction zone of induction information input units such as the induction zone of button, button and light emission, receiving device that actual induction triggers distance and this information sent to control unit and send the respective switch instruction, staff still have further to the induction information input unit near and touch the induction information cell surface may, this can make people want extreme care slow when console switch, has increased the use difficulty.Luminous indication is set and auditory tone cues is set in switch at the induction information cell surface and might reduce this misconnection and touch, but can not fundamentally solve.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of non-contact inductive switchgear, when the distance on staff and induction information input unit induction zone surface reaches actual induction triggering distance H, the induction zone surface is instantaneous to the direction motion Δ distance of avoiding staff, avoids staff to touch the induction zone surface.
The technical solution adopted in the present invention is:
A kind of non-contact inductive switchgear comprises device body, it is characterized in that:
Also comprise
The induction information input unit can non-contacting input staff induction information, has the induced signal output;
Electric device, can produce motion under electric excitation, have stiff end and clutch end, its stiff end is connected with device body, its clutch end is connected with described induction information input unit at least, and can drive induction information input unit or component movement wherein at least;
Control unit, accept the induced signal of sensitive information input unit, generation can make the electric excitation of electric device motion, and its signal input part is connected with the signal output part of described induction information input unit, and its electric excitation output is connected with the electric excitation input of described electric device.
A kind of control method of noncontact inductive switch is characterized in that may further comprise the steps:
Pre-set actual induction triggers distance H in switching device, and induction information input unit typing staff at any time is transferred to control unit near the information on induction information input unit induction zone surface and with induction information;
Staff moves closer to the induction zone surface of induction information input unit;
When the distance on staff and induction information input unit induction zone surface reached the actual induction triggering distance H of switch, the induction information input unit was given control unit this message transmission that receives;
Control unit is judged the validity of this information, and is effective in this way, then sends an electric excitation to connected electric device, and sends corresponding switch command simultaneously;
It is instantaneous to the direction motion Δ distance of avoiding staff to drive rapidly connected induction information input unit induction zone surface after the electric device Be Controlled element excitation, to avoid contacting of staff and induction information input unit effectively.
Have following outstanding substantive distinguishing features and obvious improvement with respect to prior art the present invention:
When 1, the actual induction that reaches switch when staff triggers distance H, switching device of the present invention in a flash automatically with the induction zone surface to the direction motion Δ distance of avoiding staff, the contacting of staff and induction zone of having avoided the people effectively.
2, the actual induction of switching device of the present invention trigger the comparable prior art of distance H actual induction to trigger distance little, not only antijamming capability is strong, reliability height, and switch panel is short and sweet, it is little to take up room.
3, when staff moves closer to as button or key induced district, move inwards suddenly, use staff to send out merit (qigong) can for a kind of operator of people and make button or button press magical sensation, modish fashion.
Description of drawings
Also in conjunction with the accompanying drawings the present invention is described in detail below by embodiment.
Fig. 1 is a basic principle block diagram of the present invention;
Fig. 2 is a concrete theory diagram one of the present invention;
Fig. 3 is a concrete theory diagram two of the present invention;
Fig. 4 is a concrete theory diagram three of the present invention;
Fig. 5 is the structure principle chart of first embodiment of the invention;
Fig. 6 is the operating principle figure of first embodiment of the invention;
Fig. 7 is the structure principle chart of second embodiment of the invention;
Fig. 8 is the operating principle figure of second embodiment of the invention;
Fig. 9 is the structure principle chart of third embodiment of the invention;
Figure 10 is the operating principle figure of third embodiment of the invention;
Figure 11 is the structure principle chart of fourth embodiment of the invention;
Figure 12 is the operating principle figure of fourth embodiment of the invention;
Figure 13 is the structure principle chart of fifth embodiment of the invention;
Figure 14 is the operating principle figure of fifth embodiment of the invention;
Embodiment
Referring to Fig. 1, switching device of the present invention is by the induction information input unit, and control unit and electrodynamic element are formed.The induction information input unit can non-contacting input staff induction information, has the induced signal output.Electric device, can produce motion under electric excitation, have stiff end and clutch end, its stiff end is connected with device body, its clutch end is connected with described induction information input unit at least, and can drive induction information input unit or component movement wherein at least.Control unit, accept the induced signal of sensitive information input unit, generation can make the electric excitation of electric device motion, and its signal input part is connected with the signal output part of described induction information input unit, and its electric excitation output is connected with the electric excitation input of described electric device.
Further describe: the induction information input unit has the typing as induction information of light transceiver spare or induction electrode.Its first kind of principle is that only not intercepted by approaching staff of emission or reflection make the light of reception be converted to the signal of telecommunication to change, the electrical signal information of this variation as the noncontact induction information by typing.Usually infrared emission and receiving tube can be adopted, also infrared receiving module can be adopted.Second kind of principle be staff and induction electrode near make the induction electrode changes in capacitance as the noncontact induction information by typing.
Referring to Fig. 2, control unit comprises sensor circuit and drive circuit.Technical scheme for induction information input unit with light transceiver spare, sensor circuit has to infrared transmitting tube provides working power (or pulse signal powering mode, can obtain lower power consumption), also have components and parts such as power supply that infrared receiving tube or receiver module work are provided and resistance.Devices such as resistance also can be placed on the infrared emission circuit board for receiving.More stable for the induced signal that makes typing, antijamming capability is strong, can signalization shaping treatment circuit.For the technical scheme of induction electrode induction information input unit, sensor circuit can adopt the technical scheme of discrete component, also can adopt ready-made touch sensible chip (module), and distance of reaction can be adjusted by the peripheral components of chip.Drive circuit mainly is made up of resistance and triode, also can use field effect transistor.Electric device mainly comprises coil, and the employing of iron core, armature, magnet and magnetic pole can be chosen according to the concrete form of electric device, and this is in the prior art by a lot of examples, as loud speaker, and electromagnet, relay, magnetic latching relay, electromagnetically operated valve or the like.The infrared emission receiving device that belongs to the induction information input unit is connected with sensor circuit, sensor circuit is connected with control circuit, control circuit is connected with the coil of electric device, the clutch end of electric device connects the induction zone of induction information unit at least, it is whole or wherein a part of that the technical scheme that has also can connect the induction information input unit, and these have specific descriptions in following examples kind.
Referring to Fig. 3, different with Fig. 2 is that control unit also comprises microcontroller, and it can provide more powerful signal analysis and processing ability and control ability.
Referring to Fig. 4, thereby the stronger microcontroller of function adds rational programming even can substitute or part substitutes the function cancellation sensor circuit of sensor circuit.
First embodiment:
Referring to Fig. 5, induction information input unit 1 comprises button (or button) 11, and induction zone surface 13 is installed in the induction electrode 12 in the button 11.Electric device 2 comprises the coil 21 of button 11 inside that are installed in induction information input unit 1, is installed in the magnetic pole 23 on the device body 3, the magnet 22 that is connected with magnetic pole 23, and magnetic pole 24 is equipped with in magnet 22 outsides.In order to make the induction zone surface 13 can homings, between the inner end of the induction information input unit 1 that coil 21 is housed and magnetic pole 23, spring 4 be housed.Spring 4 also can be placed in as the device body 3 of fixed part and fixedly connected thing thereof with suitable position as the induction information input unit 1 of moving component.The clutch end of present embodiment electric device is a coil.Being connected lead and should adopting soft lead of coil 21 and induction electrode 12 to increase the service life.Induction electrode 12 also can adopt spring as bonding conductor.
Referring to Fig. 6, pre-set actual induction triggers distance H in the manufacturing and designing of switching device, and induction information input unit 1 typing staff at any time is transferred to control unit near the information on induction information input unit induction zone surface 13 and with induction information.Staff moves closer to the induction zone surface 13 of induction information input unit during use, when the distance on staff and induction information input unit induction zone surface 13 reaches the actual induction triggering distance H of switch, induction information input unit 1 is given control unit this message transmission that receives, control unit is judged the validity of this information, effective in this way, then send an electric excitation to connected electric device 2, and send corresponding switch command simultaneously, it is instantaneous to the direction motion Δ distance of avoiding staff to drive rapidly connected induction information input unit 1 induction zone surface 13 after the electric device 2 Be Controlled element excitation, to avoid contacting of staff and induction information input unit effectively.
Second embodiment:
Referring to Fig. 7, induction information input unit 1 comprises button 11, and induction zone surface 13 is installed in the induction electrode 12 in the button 11.Electric device 2 comprises the coil 21 of button 11 inside that are installed in induction information input unit 1, is installed in the magnet 22 on the device body 3.Panel 5 covers on the device body 3.
Referring to Fig. 8, its operation principle and first embodiment are basic identical, staff moves closer to the induction zone surface of seesaw type induction information input unit during use, when the induction zone surface distance below staff and the seesaw type induction information input unit reaches the actual induction triggering distance H of switch, seesaw type induction information input unit is given control unit this message transmission that receives, control unit is judged the validity of this information, effective in this way, then send an electric excitation to connected electric device, and the instruction of sending out simultaneously, it is instantaneous to the direction motion Δ distance of avoiding staff to drive rapidly connected seesaw type induction information input unit induction zone surface after the electric device Be Controlled element excitation, to avoid contacting of staff and induction information input unit effectively.When the actual induction that staff and top induction zone surface distance reach switch triggers distance H, control unit sends the instruction of pass, and it is instantaneous to the direction motion Δ distance of avoiding staff to drive connected seesaw type induction information input unit induction zone surface after the electric device Be Controlled element excitation rapidly.
Electric device in the present embodiment also can adopt the technical scheme among other embodiment.
The 3rd embodiment:
Referring to Fig. 9, induction information input unit 1 comprises button (or button) 11, and induction zone surface 13 is installed in the infrared transmitting tube and the receiving tube 14 of button 11 sides.Electric device 2 comprises the armature 27 of button 11 inside that are installed in induction information input unit 1, is installed in the pole shoe 26 on the device body 3, and the iron core 25 that is connected with pole shoe 26 is installed in the coil 21 on unshakable in one's determination 25.Panel 5 links together with device body 3, for the ease of assembling, also can link together by securing member.Also be provided with guiding parts in the device and make the reset spring (not drawing among the figure) of usefulness of induction zone surface.
Referring to Figure 10, its operation principle and first embodiment are basic identical, and just the induction information input unit substitutes induction electrode with the infrared emission receiving device, do not do being repeated in this description at this.
The 4th embodiment:
Referring to Figure 11 and Figure 12, with the 3rd embodiment difference be that 2 of electric devices drive induction zone 11 motions (induction zone surface 13 movement therewith) in the induction information input unit 1.
The 5th embodiment:
Referring to Figure 13 and Figure 14, with the 3rd embodiment difference be that light transceiver spare 14 in the induction information input unit 1 is not directly to be oppositely arranged, but certain included angle is arranged, its induction information input principle is not by blocking-up light but leans on reflection ray.Its modular design can be adopted the infrared emission receiving device.
The advantage of this embodiment is that induction information input unit surface is more smooth, good looking appearance, and distance of reaction is bigger, is convenient to operation.
The control method of a kind of noncontact inductive switch of the present invention specifically may further comprise the steps:
At first pre-set actual induction triggers distance H in the switching device design is produced, and induction information input unit typing staff at any time is transferred to control unit near the information on induction information input unit induction zone surface and with induction information;
The concrete operations controlled step:
1, staff moves closer to the induction zone surface of induction information input unit;
2, when the distance on staff and induction information input unit induction zone surface reached the actual induction triggering distance H of switch, the induction information input unit was given control unit this message transmission that receives;
3, control unit is judged the validity of this information, and is effective in this way, then sends an electric excitation to connected electric device, and sends corresponding switch command simultaneously;
4, it is instantaneous to the direction motion Δ distance of avoiding staff to drive rapidly connected induction information input unit induction zone surface after the electric device Be Controlled element excitation, to avoid contacting of staff and induction information input unit effectively.
Electric device among the present invention can adopt magnetic freeze mode electric device, also can adopt motor, linear motor.
Electric device technical scheme in the various embodiments of the present invention can be used for reference mutually, exchange according to specific design.
The present invention can be widely used in the elevator keyboard, Machine-Tool Control keyboard, electric control such as switch on wall field.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and to those skilled in the art, the present invention can have various changes and variation.All any modifications of being made within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included in protection scope of the present invention.
Claims (8)
1. a non-contact inductive switchgear comprises device body, it is characterized in that:
Also comprise
The induction information input unit can non-contacting input staff induction information, has the induced signal output;
Electric device, can produce motion under electric excitation, have stiff end and clutch end, its stiff end is connected with device body, its clutch end is connected with described induction information input unit at least, and can drive induction information input unit or component movement wherein at least;
Control unit, accept the induced signal of sensitive information input unit, generation can make the electric excitation of electric device motion, and its signal input part is connected with the signal output part of described induction information input unit, and its electric excitation output is connected with the electric excitation input of described electric device.
2. switching device as claimed in claim 1 is characterized in that:
Described electric device comprises coil, at least comprise a kind of in magnet, iron core, the armature, its coil terminals is as the electric excitation input of electric device, and its clutch end is chosen at least a with stiff end from coil, magnet, iron core and armature according to different electronic modes.
3. switching device as claimed in claim 1 is characterized in that:
Described induction information input unit comprises induction electrode and covering thereof, and the electric connecting terminal of the signal input part of induction electrode and control unit is as the signal output part of induction information input unit.
4. switching device as claimed in claim 1 is characterized in that:
Described induction information input unit comprises that light transmits and receives device and covering thereof, and light transmits and receives the signal output part of the signal output part of device as the induction information input unit.
5. switching device as claimed in claim 4 is characterized in that:
It is that infrared light transmits and receives device that described light transmits and receives device.
6. as claim 1 and 2 described switching devices, it is characterized in that:
Described control unit comprises sensor circuit and drive circuit, the signal input part of sensor circuit is connected with the signal output part of induction information input unit as the signal input part of control unit, the signal output part of sensor circuit is connected with the signal input part of drive circuit, and the electric excitation output of drive circuit is connected with the coil terminals of described electric device as the electric excitation input as the electric excitation output of control unit.
7. as claim 1 and 2 described switching devices, it is characterized in that:
Described control unit comprises sensor circuit, drive circuit and microcontroller, the signal input part of sensor circuit is connected with the signal output part of induction information input unit as the signal input part of control unit, the signal output part of sensor circuit is connected with the signal input part of microcontroller, the signal output part of microcontroller is connected with the signal input part of drive circuit, and the electric excitation output of drive circuit is connected with the coil terminals of described electric device as the electric excitation input as the electric excitation output of control unit.
8. the control method of a noncontact inductive switch is characterized in that may further comprise the steps:
Pre-set actual induction triggers distance H in switching device, and induction information input unit typing staff at any time is transferred to control unit near the information on induction information input unit induction zone surface and with induction information;
Staff moves closer to the induction zone surface of induction information input unit;
When the distance on staff and induction information input unit induction zone surface reached the actual induction triggering distance H of switch, the induction information input unit was given control unit this message transmission that receives;
Control unit is judged the validity of this information, and is effective in this way, then sends an electric excitation to connected electric device, and sends corresponding switch command simultaneously;
It is instantaneous to the direction motion Δ distance of avoiding staff to drive rapidly connected induction information input unit induction zone surface after the electric device Be Controlled element excitation, to avoid contacting of staff and induction information input unit effectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101076647A CN101908872A (en) | 2009-06-05 | 2009-06-05 | Non-contact inductive switchgear and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101076647A CN101908872A (en) | 2009-06-05 | 2009-06-05 | Non-contact inductive switchgear and control method thereof |
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| CN101908872A true CN101908872A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101076647A Pending CN101908872A (en) | 2009-06-05 | 2009-06-05 | Non-contact inductive switchgear and control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171470A1 (en) * | 2011-06-14 | 2012-12-20 | Pan Shuchang | Operating key-free pulse oximeter based on photoelectric effect |
| CN104811176A (en) * | 2014-01-27 | 2015-07-29 | 茂旭安防工程设备(上海)有限公司 | Switch circuit |
| CN107869919A (en) * | 2017-12-12 | 2018-04-03 | 湖南湘中光华微波科技有限公司 | Kiln controlling switch circuit |
| CN112735889A (en) * | 2019-10-28 | 2021-04-30 | 北京小米移动软件有限公司 | Key structure, electronic equipment and control method |
-
2009
- 2009-06-05 CN CN2009101076647A patent/CN101908872A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171470A1 (en) * | 2011-06-14 | 2012-12-20 | Pan Shuchang | Operating key-free pulse oximeter based on photoelectric effect |
| CN104811176A (en) * | 2014-01-27 | 2015-07-29 | 茂旭安防工程设备(上海)有限公司 | Switch circuit |
| CN107869919A (en) * | 2017-12-12 | 2018-04-03 | 湖南湘中光华微波科技有限公司 | Kiln controlling switch circuit |
| CN112735889A (en) * | 2019-10-28 | 2021-04-30 | 北京小米移动软件有限公司 | Key structure, electronic equipment and control method |
| CN112735889B (en) * | 2019-10-28 | 2024-05-24 | 北京小米移动软件有限公司 | Key structure, electronic equipment and control method |
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Application publication date: 20101208 |