Background technology
In some special occasion, hospital for example also is to use the lamp switch of touch or push type basically, when people push these lamp switch, just is very easy to occur the situation of cross-infection.
The patent No. is that " 200920309013.1 ", name are called the contactless photoelectricity microswitch that discloses a kind of better reliability in the Chinese utility model patent document of " contactless photoelectricity microswitch "; The Switch main body of this switching device is provided with Dustproof button lid and bottom plate; Its photoelectricity partly is positioned at Switch main body; Dustproof button covers the control lever of setting and cooperates with control hole glade plane space on the Switch main body; Control lever is provided with the light barrier corresponding to the light path position, and the magnet that a pair of mutual exclusion on the control lever glide direction is set is as resetting means.
Disclosed switching device is to open and cut off light path through the Dustproof button lid with the slip of control lever in control hole in the document; Though having eliminated contact switch, it is prone to come in contact bad inherent shortcoming; But; If use at special occasions such as aforementioned hospitals, still there is the risk of bigger cross-infection, can't meet the demands.
In addition, traditional push switch, it is to realize that through the contact circuit switches, and when circuit switches, is easy to produce spark, has potential safety hazard.
Therefore, based on the defective of above-mentioned existing switch, need improve existing switch.
Summary of the invention
The deficiency that the objective of the invention is to prior art provides a kind of dull and stereotyped intelligent opto-electrical switch, and it is existing that this flat board intelligent opto-electrical switch has solved existing switch: need staff push or touch and cause occurring cross-infection risk, possibly produce the defectives such as risk of spark.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
Dull and stereotyped intelligent opto-electrical switch; Comprise face-piece, drain pan; Face-piece is combined in a side of drain pan, and display unit, circuit board are installed in the interblock space between face-piece and the drain pan successively, and display unit is electrically connected with circuit board; Also appearing on the face-piece has at least two photoelectric sensors, and photoelectric sensor is electrically connected with circuit board.
Between said face-piece and the circuit board LGP is installed.
Said display unit can change plate for color lamp.
Said display unit can also be light fixture, for example red light, green light.
Offer the hole of corresponding photoelectric sensor on the said face-piece.
The part of corresponding display unit has lamplight display part on the said face-piece.
Beneficial effect of the present invention is: through being revealed at least two photoelectric sensors of face-piece, the variation of induction extraneous light is brandished staff and is triggered related circuit; Thereby make the light fixture of control can show different state; Staff need not be pushed or soft-touch control, eliminate cross-infection risk, can not produce spark, can eliminate safe hidden trouble; The light that can also pass through the large tracts of land leaded light of switch guides pedestrian's direction, thereby the effect of energy saving is arranged.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
See Fig. 1---Fig. 2; The dull and stereotyped intelligent opto-electrical switch of the present invention comprises: face-piece 1, drain pan 5; Face-piece 1 is combined in a side of drain pan 5, and LGP 2, color lamp variation plate 3, circuit board 4 are installed in the interblock space between face-piece 1 and the drain pan 5 successively, and color lamp changes plate 3 and is electrically connected with circuit board 4.
Have lamplight display part on the face-piece 1, that is to say the light transmission part, simultaneously, also appearing on the face-piece 1 has at least two photoelectric sensors: first photoelectric sensor 7, second photoelectric sensor 8, this photoelectric sensor adopts infrared inductor.
Among the present invention, photoelectric sensor is electrically connected on the circuit board 4, offers 6, two photoelectric sensors in two holes on the face-piece 1 and can sense the light from outside variation through the hole of face-piece 1.
Can set control program, for example:
When first photoelectric sensor 7 is blocked, feed back signal to control circuit, when second photoelectric sensor 8 is blocked within a certain period of time, feed back signal to control circuit, excite color lamp to change plate 3 simultaneously and reveal red light.
When second photoelectric sensor 8 is blocked, feed back signal to control circuit, when first photoelectric sensor 7 is blocked within a certain period of time, feed back signal to control circuit, excite color lamp to change plate 3 simultaneously and reveal green light.
General; It is transversely arranged that two photoelectric sensors can be arranged to, and also can be arranged to vertical arrangement, as be arranged to when transversely arranged; Just can realize: when staff was from left to right waved and blocked two photoelectric sensors successively; Color lamp changes plate 3 and reveals red light, when staff was waved and when blocking two photoelectric sensors successively, color lamp changes plate 3 and reveals green light from right to left.
When color lamp changed plate 3 demonstrations, if in the time of certain predetermined, do not realize the situation about exciting of aforementioned two photoelectric sensors again, then color lamp variation plate 3 extinguished automatically.
Certainly, color lamp of the present invention changes plate 3 and also can be directly replaces with the lamp of two colors.
Circuit part operation principle of the present invention is following:
1. power supply power pack:
Electric supply system is obtained alternating voltage from 220V.Be depressured to 5V through transformer.To voltage-stabiliser tube voltage is surely arrived 5V through rectifier then and give each circuit part power supply again.
2. infrared induction and signal processing:
When having detected hand, first photoelectric sensor 7 shelters from.Send 0 signal then and give signal and direction treatment system; System is with this first photoelectric sensor, 7 signals amplification and wait for second photoelectric sensor, 8 signals; If second photoelectric sensor 8 has also detected hand after 0.3 second when sheltering from, signal and direction treatment system are amplified second photoelectric sensor, 8 signals.Photoelectric sensor 7 detection earlier this moment first is in one's hands, and second photoelectric sensor, 8 backs are detected in one's hands.Signal and direction treatment system think that then this moment, hand was to respond to from left to right.And send judged result " left-right " character to the CPU master control system.
In one's hands if second photoelectric sensor 8 detects earlier, and first photoelectric sensor, 7 backs are detected when in one's hands, think that then this moment, hand was the right-to-left induction.Send judged result " right-left " character to the CPU master control system.
If when not having hand to block first photoelectric sensor 7 and second photoelectric sensor 8, then continuous cycle detection extraneous light.Till having hand to block infrared detector.
3.CPU master control system:
CPU receives the character that signal and direction treatment system are sent.If receive " left-right " character, CPU opens red LED lamp so, closes green LED lamp, and sends " 0 " voltage and give the AC detection system.
If receive " right-left " character, CPU opens green LED lamp so, closes red LED lamp, and sends " 1 " voltage and give the AC detection system.
If CPU does not receive the character that signal and direction treatment system are sent, be in closed condition so always, open red LED lamp.
4.AC detection system:
CPU sends if the AC detection system receives " 0 " voltage; The AC detection system is closed controllable silicon when alternating current 220V voltage is in " 0 " dotted state so; Be AC detection system output LOW voltage always, and remain unchanged, make the reverse-blocking tetrode thyristor device can not reach the unlatching load condition.
If the AC detection system receives " 1 " voltage that CPU sends, AC detector output HIGH voltage so.And when the each mistake of alternating current 220V voltage " 0 " dotted state the voltage of transformation direction, make no matter the reverse-blocking tetrode thyristor device can open load at 220V positive half period and negative half-cycle.
The present invention also has the following advantages:
1, because the line-internal chip controls, can not produce spark during work, can eliminate safe hidden trouble, avoid in the air inflammable gas concentration too big, the potential safety hazard that the spark that switch produces brings;
2, the surface is a big light guiding surface, if be installed in public corridor, not only as a decoration of corridor; Also can become pedestrian's a guide; Even do not open corridor lamp, the light that also can pass through the large tracts of land leaded light of switch guides direction, thereby the effect of energy saving is arranged.
Certainly; The embodiment of the above is a preferred embodiments of the present invention, and unrestricted practical range of the present invention; So all equivalences of doing according to the described structure of claim of the present invention, characteristic and principle change or modify, and all should be included in the claim of the present invention.