CN103457600B - There is self-locking and the on-off circuit of isolation features and light fixture - Google Patents

There is self-locking and the on-off circuit of isolation features and light fixture Download PDF

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Publication number
CN103457600B
CN103457600B CN201210174214.1A CN201210174214A CN103457600B CN 103457600 B CN103457600 B CN 103457600B CN 201210174214 A CN201210174214 A CN 201210174214A CN 103457600 B CN103457600 B CN 103457600B
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described
3rd
end
output unit
input block
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CN201210174214.1A
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CN103457600A (en
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周明杰
管伟芳
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海洋王照明科技股份有限公司
深圳市海洋王照明技术有限公司
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Abstract

The invention discloses and a kind of have self-locking and the on-off circuit of isolation features and light fixture, on-off circuit includes the first isolating coupler, the second isolating coupler and the 3rd isolating coupler, simple in construction and being easily achieved.First isolating coupler includes the first input block and the first output unit;First input block receives triggering level signal, makes the first output unit turn on by coupling after triggering;Trigger after stopping, disconnecting coupling and make the first output unit disconnect, it is achieved isolation features.Second isolating coupler includes the second input block and the second output unit;After first output unit conducting, make the second output unit turn on by coupling, and after the first output unit disconnects, maintain the coupling between the second input block and the second output unit, it is achieved auto-lock function.3rd isolating coupler include the 3rd input block and the 3rd output unit;Under the second input block conducting, make to turn on as the 3rd output unit of switching circuitry output by coupling.

Description

There is self-locking and the on-off circuit of isolation features and light fixture

Technical field

The present invention relates to on-off circuit and light fixture, particularly relate to a kind of switch electricity with self-locking and isolation features Road and light fixture.

Background technology

On-off circuit is a kind of circuit conventional in electronic equipment, be connected to supply power supply and operating circuit it Between, control operating circuit from supply power supply power taking by the on or off of on-off circuit, thus control electricity Whether subset works.The type of on-off circuit has multiple, turns on for the triggering by triggering level On-off circuit, needs, after on-off circuit triggering and conducting, to continue to out in actual application under many circumstances Close the conducting of circuit.At present conventional method is to set up an integrated circuit (IC) again as holding circuit, In order to continue to the conducting of this on-off circuit after on-off circuit turns on.But, the circuit of this holding circuit Structure is usually relatively complex, and components and parts are more, and not only cost is high, and reduces the whole electricity of electronic equipment The reliability of line structure.On the other hand, on-off circuit maintain conducting during, triggering level signal with On-off circuit remains in that directly electrical connection, it is impossible to enter performing circuit (being on-off circuit) herein The impact of isolation control signal (being herein triggering level signal) after duty.

Summary of the invention

The technical problem to be solved in the present invention be in prior art in order to maintain continuing of on-off circuit Turn on and need to set up IC, cause the defect that cost improves and circuit structure is complicated, it is provided that A kind of have self-locking and the on-off circuit of isolation features and light fixture.

The technical solution adopted for the present invention to solve the technical problems is: provides one and has self-locking and isolation The on-off circuit of function, the input of described on-off circuit receives triggering level signal, described on-off circuit Outfan turns under the triggering of described triggering level signal, and described on-off circuit includes the first isolation coupling Device, the second isolating coupler and the 3rd isolating coupler;Wherein,

Described first isolating coupler include the first input block and the first output unit;Described first input Unit receives described triggering level signal, and one end of described first output unit is connected with power end;In order to logical Cross the triggering of described triggering level signal, start between described first input block and described first output unit Coupling so that described first output unit conducting, and described trigger stop after, disconnect described first Coupling between input block and described first output unit, so that described first output unit disconnects;

Described second isolating coupler include the second input block and the second output unit;Described second input One end of unit is connected with the other end of described first output unit, one end of described second output unit and institute Stating power end to connect, the other end of described second output unit is connected with one end of described second input block; In order to the conducting by described first output unit, start described second input block and described second output is single Coupling between unit, so that described second output unit conducting, and after described first output unit disconnects, Continue to the coupling between described second input block and described second output unit;

Described 3rd isolating coupler include the 3rd input block and the 3rd output unit, described 3rd output The outfan of unit is as the outfan of described on-off circuit;One end of described 3rd input block and described the The other end of two input blocks connects, the other end ground connection of described 3rd input block, in order to by described the The conducting of two input blocks, starts the coupling between described 3rd input block and described 3rd output unit, So that described 3rd output unit conducting.

In the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, described first isolation Bonder, described second isolating coupler and described 3rd isolating coupler are respectively the first photoelectric coupling Device, the second photoelectrical coupler and the 3rd photoelectrical coupler;Wherein,

Described first input block and described first output unit are respectively the first luminous organ and the first light-receiving device; Described first luminous organ receives described triggering level signal, one end of described first light-receiving device and described power end Connect;

Described second input block and described second output unit are respectively the second luminous organ and the second light-receiving device; One end of described second luminous organ is connected with the other end of described first light-receiving device, the one of described second light-receiving device End is connected with described power end, and the other end of described second light-receiving device connects with one end of described second luminous organ Connect;

Described 3rd input block and described 3rd output unit are respectively the 3rd luminous organ and the 3rd light-receiving device; One end of described 3rd luminous organ is connected with the other end of described second luminous organ, described 3rd luminous organ another One end ground connection.

In the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, described first is luminous Device, described second luminous organ and the 3rd luminous organ are respectively the first light emitting diode, the second light emitting diode And the 3rd light emitting diode;Described first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively One phototriode, the second phototriode and the 3rd phototriode;Wherein,

Described first light emitting diode receives described triggering level signal, the current collection of described first phototriode Pole is connected with described power end;

The positive pole of described second light emitting diode is connected with the emitter stage of described first phototriode, and described The colelctor electrode of two phototriodes is connected with described power end, the emitter stage of described second phototriode and institute The positive pole stating the second light emitting diode connects;

The positive pole of described 3rd light emitting diode is connected with the negative pole of described second light emitting diode, and the described 3rd The minus earth of light emitting diode.

In the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, described first isolation Bonder, described second isolating coupler and described 3rd isolating coupler be respectively the first relay, Two relays and the 3rd relay;Wherein,

Described first input block and described first output unit are respectively first coil and the first normally opened contact; Described first coil receives described triggering level signal, one end of described first normally opened contact and described power end Connect;

Described second input block and described second output unit are respectively the second coil and the second normally opened contact; One end of described second coil is connected with the other end of described first normally opened contact, described second normally opened contact One end is connected with described power end, and the other end of described second normally opened contact connects with one end of described second coil Connect;

Described 3rd input block and described 3rd output unit are respectively tertiary coil and the 3rd normally opened contact; One end of described tertiary coil is connected with the other end of described second coil, another termination of described tertiary coil Ground.

In the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, described first isolation Bonder, described second isolating coupler and described 3rd isolating coupler be respectively the first transformator, Two transformators and the 3rd transformator;Wherein,

Described first input block and described first output unit are respectively first primary and first level;Described Triggering level signal described in first primary receiver, one end of described first level is connected with described power end;

Described second input block and described second output unit are respectively the second primary and second subprime;Described One end of second primary is connected with the other end of described first level, one end of described second subprime and described electricity Source connects, and the other end of described second subprime is connected with one end of described second primary;

Described 3rd input block and described 3rd output unit are respectively the 3rd primary and third time level;Described One end of 3rd primary is connected with the other end of described second primary, the other end ground connection of described 3rd primary.

In the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, described triggering level Signal is the one in square-wave signal, sine wave signal and sawtooth signal.

Present invention also offers a kind of light fixture, including light source and the on-off circuit with self-locking and isolation features, Described light source is connected to form current supply circuit with outside supply power supply by described on-off circuit;Wherein, institute The input stating on-off circuit receives triggering level signal, and the outfan of described on-off circuit triggers electricity described Under the triggering of ordinary mail number turn on, described on-off circuit include the first isolating coupler, the second isolating coupler with And the 3rd isolating coupler;Wherein,

Described first isolating coupler include the first input block and the first output unit;Described first input Unit receives described triggering level signal, and one end of described first output unit is connected with power end;In order to logical Cross the triggering of described triggering level signal, start between described first input block and described first output unit Coupling so that described first output unit conducting, and described trigger stop after, disconnect described first Coupling between input block and described first output unit, so that described first output unit disconnects;

Described second isolating coupler include the second input block and the second output unit;Described second input One end of unit is connected with the other end of described first output unit, one end of described second output unit and institute Stating power end to connect, the other end of described second output unit is connected with one end of described second input block; In order to the conducting by described first output unit, start described second input block and described second output is single Coupling between unit, so that described second output unit conducting, and after described first output unit disconnects, Continue to the coupling between described second input block and described second output unit;

Described 3rd isolating coupler include the 3rd input block and the 3rd output unit, described 3rd output The outfan of unit connects with described light source and described supply power supply respectively as the outfan of described on-off circuit Connect;One end of described 3rd input block is connected with the other end of described second input block, described 3rd defeated Enter the other end ground connection of unit, in order to the conducting by described second input block, start described 3rd input Coupling between unit and described 3rd output unit, so that described 3rd output unit conducting.

In the light fixture according to the embodiment of the present invention, described first isolating coupler, described second isolation coupling Device and described 3rd isolating coupler are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd Photoelectrical coupler;Wherein,

Described first input block and described first output unit are respectively the first luminous organ and the first light-receiving device; Described first luminous organ receives described triggering level signal, one end of described first light-receiving device and described power end Connect;

Described second input block and described second output unit are respectively the second luminous organ and the second light-receiving device; One end of described second luminous organ is connected with the other end of described first light-receiving device, the one of described second light-receiving device End is connected with described power end, and the other end of described second light-receiving device connects with one end of described second luminous organ Connect;

Described 3rd input block and described 3rd output unit are respectively the 3rd luminous organ and the 3rd light-receiving device; One end of described 3rd luminous organ is connected with the other end of described second luminous organ, described 3rd luminous organ another One end ground connection;The two ends of described 3rd light-receiving device are connected with described light source and described supply power supply respectively.

In the light fixture according to the embodiment of the present invention, described first luminous organ, described second luminous organ and the Three luminous organs are respectively the first light emitting diode, the second light emitting diode and the 3rd light emitting diode;Described First light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode, the second photoelectricity three Pole pipe and the 3rd phototriode;Wherein,

Described first light emitting diode receives described triggering level signal, the current collection of described first phototriode Pole is connected with described power end;

The positive pole of described second light emitting diode is connected with the emitter stage of described first phototriode, and described The colelctor electrode of two phototriodes is connected with described power end, the emitter stage of described second phototriode and institute The positive pole stating the second light emitting diode connects;

The positive pole of described 3rd light emitting diode is connected with the negative pole of described second light emitting diode, and the described 3rd The minus earth of light emitting diode;The colelctor electrode of described 3rd phototriode is connected with described supply power supply, Emitter stage is connected with described light source.

In the light fixture according to the embodiment of the present invention, described first isolating coupler, described second isolation coupling Device and described 3rd isolating coupler are respectively the first relay, the second relay and the 3rd relay; Wherein,

Described first input block and described first output unit are respectively first coil and the first normally opened contact; Described first coil receives described triggering level signal, one end of described first normally opened contact and described power end Connect;

Described second input block and described second output unit are respectively the second coil and the second normally opened contact; One end of described second coil is connected with the other end of described first normally opened contact, described second normally opened contact One end is connected with described power end, and the other end of described second normally opened contact connects with one end of described second coil Connect;

Described 3rd input block and described 3rd output unit are respectively tertiary coil and the 3rd normally opened contact; One end of described tertiary coil is connected with the other end of described second coil, another termination of described tertiary coil Ground;The two ends of described 3rd normally opened contact are connected with described light source and described supply power supply respectively.

The beneficial effect comprise that: according in the on-off circuit of the present invention, only with three isolation Bonder, so that it may under the triggering of triggering level signal so that it is outfan turn on, it is achieved that supply power supply with The connection of operating circuit, simple in construction and low cost.Further, since the second isolating coupler has self-locking merit Can, after on-off circuit triggering and conducting, therefore can continue to maintain the conducting of the outfan of on-off circuit, thus It is no longer necessary to set up a complex and high cost integrated circuit to maintain the conducting of on-off circuit.And, by After triggering stopping, the coupling between the first input block and the first output unit in the first isolating coupler Disconnect, it is achieved thereby that the isolation between on-off circuit and external trigger level signal, therefore this on-off circuit Also there is isolation features.

It addition, in the light fixture according to the present invention, this light fixture includes on-off circuit and light source, and this switch is electric Road is only with three isolating couplers, so that it may under the triggering of triggering level signal so that it is outfan turns on, Thus connect the light source in light fixture and outside supply power supply, simple in construction and low cost.Further, since the Two isolating couplers have auto-lock function, therefore can continue to maintain switch electricity after on-off circuit triggering and conducting The conducting of the outfan on road, thus be no longer necessary to set up a complex and high cost integrated circuit and maintain out Close the conducting of circuit.Be additionally, since triggering stop after, the first input block in the first isolating coupler with Coupling between first output unit disconnects, it is achieved thereby that between on-off circuit and external trigger level signal Isolation, therefore this on-off circuit also has isolation features.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 is based on the logic diagram of the on-off circuit with self-locking and isolation features of the embodiment of the present invention;

Fig. 2 is based on the circuit of the on-off circuit with self-locking and isolation features of first embodiment of the invention Schematic diagram;

Fig. 3 is based on the circuit of the on-off circuit with self-locking and isolation features of second embodiment of the invention Schematic diagram;

Fig. 4 is based on the circuit of the on-off circuit with self-locking and isolation features of third embodiment of the invention Schematic diagram.

Detailed description of the invention

In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein In order to explain the present invention, it is not intended to limit the present invention.

Include light source according to the light fixture of the embodiment of the present invention and there is the on-off circuit of self-locking and isolation features, its In, light source is connected to form current supply circuit with outside supply power supply by on-off circuit.Specifically, figure 1 logic diagram showing the on-off circuit with self-locking and isolation features according to the embodiment of the present invention, as Shown in Fig. 1, the input of on-off circuit receives triggering level signal, and outfan connects light source and supply respectively Power supply (not shown).The outfan of on-off circuit turns under the triggering of triggering level signal, and leads to Cross the conducting of outfan and can connect light source and supply power supply, thus realize light source from supply power supply power taking from the beginning of Work.Can use level triggers or edging trigger, triggering level signal can be square-wave signal, sine herein Ripple signal or the one of sawtooth signal.As a example by high level triggering being carried out to use square wave level signal below It is illustrated, but those skilled in the art is it is to be understood that also can use other triggering mode and triggering Level.Now, when the magnitude of voltage of triggering level signal is higher than preset value, (triggering level signal is high electricity At ordinary times), the outfan triggering and conducting of on-off circuit.

Specifically, on-off circuit include first isolating coupler the 100, second isolating coupler 200 and 3rd isolating coupler 300.Further, the first isolating coupler 100 include the first input block 110 With the first output unit 120;Second isolating coupler 200 include that the second input block 210 and second is defeated Go out unit 220;And the 3rd isolating coupler 300 include that the 3rd input block 310 and the 3rd output are single Unit 320.For any one isolating coupler, when input block is by external control signal triggering and conducting After work, coupling between startup input block and output unit, such as electromagnetic coupled or photoelectric coupling etc., So that output unit ON operation.

Herein, the input of the first input block 110 receives triggering as the input of whole on-off circuit Level signal, one end of the first output unit 120 is connected with power end Vcc.Second input block 210 One end be connected with the other end of the first output unit 120, one end of the second output unit 220 and power end Vcc connects, and the other end of the second output unit 220 and one end of the second input block 210 connect.3rd The outfan of output unit 320 is as the outfan of on-off circuit;One end of 3rd input block 310 and the The other end of two input blocks 210 connects, the other end ground connection of the 3rd input block 310.It is to be understood that It is that power end Vcc herein is the power supply maintaining on-off circuit to work, is different from above-mentioned electronics and sets Working power in Bei.

In work process, by the triggering (when such as triggering level signal is high level) of triggering level signal, Start the coupling between the first input block 110 and the first output unit 120, so that the first output unit 120 ON operation.Now at termination power end Vcc and first output unit of the first output unit 120 Under conditions of 120 conductings, start the coupling between the second input block 210 and the second output unit 220, So that the second output unit 220 turns on.Meanwhile, by the conducting of the second input block 210, start the 3rd Coupling between input block 310 and the 3rd output unit 320, so that the 3rd output unit 320 turns on, The outfan conducting of the most whole on-off circuit.

When the triggering of triggering level signal stops (such as triggering level signal is low level), the first input Disconnection is coupled so that the first output unit 120 is no longer led between unit 110 with the first output unit 120 Logical.But the one end being because the second output unit 220 is also connected with power end Vcc, and the other end and second One end of input block 210 connects, and now because of the second input block 210 and the second output unit Coupling between 220 is not turned off, and the second output unit 220 remains on, therefore can be by second Output unit 220 maintains coupling between the second input block 210 with the second output unit 220, thus Two isolating couplers 200 achieve auto-lock function.In this case, as long as power end Vcc maintains voltage Supply, then can maintain coupling between the second input block 210 with the second output unit 220 always.Accordingly Ground, due to the constant conduction of the second input block 210, the 3rd input block 310 and the 3rd output unit Coupling between 320 can also be maintained always so that the 3rd output unit 320 constant conduction, then The outfan constant conduction of whole on-off circuit.

From the above, it can be seen that according to the on-off circuit of the embodiment of the present invention, in the triggering of triggering level signal Under, its outfan turns on, it is achieved that supply power supply and the connection of light source.Further, since the second isolation coupling Device 200 has auto-lock function, therefore can continue to maintain the defeated of on-off circuit after on-off circuit triggering and conducting Go out the conducting of end.After being additionally, since triggering stopping, the first input block in the first isolating coupler 100 Disconnection is coupled between 110 with the first output unit 120, it is achieved thereby that on-off circuit and external trigger electricity Isolation between ordinary mail number, therefore this on-off circuit has isolation features.

In the first embodiment of the present invention, first isolating coupler the 100, second isolating coupler 200 with And the 3rd isolating coupler 300 be respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectricity Bonder.Wherein, the first input block 110 and the first output unit 120 are respectively the first luminous organ and the One light-receiving device;First luminous organ receives triggering level signal, and one end of the first light-receiving device is connected with power end. Second input block 210 and the second output unit 220 are respectively the second luminous organ and the second light-receiving device;Second One end of luminous organ is connected with the other end of the first light-receiving device, and one end of the second light-receiving device is connected with power end, The other end of the second light-receiving device and one end of the second luminous organ connect.3rd input block 310 and the 3rd output Unit 320 is respectively the 3rd luminous organ and the 3rd light-receiving device;One end of 3rd luminous organ and the second luminous organ The other end connects, the other end ground connection of the 3rd luminous organ.

To be illustrated this embodiment in a concrete implementation mode below, those skilled in the art should When knowing, implementations below is used only as citing, is not limitation of the present invention, this implementation each Plant equivalent and substitute all within protection scope of the present invention.

Fig. 2 shows the on-off circuit with self-locking and isolation features according to first embodiment of the invention Circuit diagram, as in figure 2 it is shown, the first luminous organ, the second luminous organ and the 3rd luminous organ are respectively One light emitting diode GY1, the second light emitting diode GY2 and the 3rd light emitting diode GY3;First is subject to Light device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode GG1, the second photoelectricity three Pole pipe GG2 and the 3rd phototriode GG3.Wherein, the first light emitting diode GY1 receives and triggers electricity Ordinary mail number, preferably receives triggering level signal, the first phototriode GG1 by the first shunt resistance R1 Colelctor electrode be connected with power end.The positive pole of the second light emitting diode GY2 and the first phototriode GG2 Emitter stage connect, the colelctor electrode of the second phototriode GG2 is connected with power end, the second phototriode The emitter stage of pipe GG2 and the positive pole of the second light emitting diode GY2 connect.3rd light emitting diode GY3 Positive pole and the second light emitting diode GY2 negative pole connect, the minus earth of the 3rd light emitting diode GY3, Preferably by the second shunt resistance R2 ground connection.

In work process, by the triggering (when such as triggering level signal is high level) of triggering level signal, First light emitting diode GY1 conducting is the most luminous, turns on, i.e. pass through after the first phototriode GG1 light It is logical that photoelectric coupling makes the first phototriode lead GG1.Now at the current collection of the first phototriode GG1 Under conditions of pole connects power end Vcc and the conducting of the first phototriode, the second light emitting diode GY2 conducting And luminous, turn on after the second phototriode GG2 light.Positive pole due to the second light emitting diode GY2 With the emitter stage short circuit of the second phototriode GG2, and the colelctor electrode of the second phototriode GG2 with electricity Source Vcc connects, the most once the second phototriode GG2 conducting, and the second photoelectrical coupler gets final product shape Become self-locking, even if the triggering of triggering level signal stops (such as triggering level signal is low level), as long as Power end Vcc maintains voltage, between the second light emitting diode GY2 and the second phototriode GG2 just Photoelectric coupling can be always maintained at, and be always maintained at conducting state.Meanwhile, at the second light emitting diode GY2 And under conditions of keeping photoelectric coupling between the second phototriode GG2 and each tending to remain on, the Three light emitting diode GY3 constant conduction are the most luminous, persistently keep leading after the 3rd phototriode GG3 light The outfan of logical state, i.e. on-off circuit persistently tends to remain on.

Fig. 3 shows the on-off circuit with self-locking and isolation features according to second embodiment of the invention Circuit diagram, as it is shown on figure 3, first isolating coupler the 100, second isolating coupler 200 and Three isolating couplers 300 are respectively the first relay, the second relay and the 3rd relay.Wherein, One input block 110 and the first output unit 120 are respectively first coil L1 and the first normally opened contact K1; First coil L1 receives triggering level signal, it is preferable that is received by the first shunt resistance R1 and triggers electricity Ordinary mail number, one end of the first normally opened contact K1 is connected Vcc with power end.Second input block 210 and Two output units 220 are respectively the second coil L2 and the second normally opened contact K2;One end of second coil L2 Being connected with the other end of the first normally opened contact K1, one end of the second normally opened contact K2 is with power end Vcc even Connecing, the other end of the second normally opened contact K2 and one end of the second coil L2 connect.3rd input block 310 It is respectively tertiary coil L3 and the 3rd normally opened contact K3 with the 3rd output unit 320;Tertiary coil L3's One end is connected with the other end of the second coil L2, the other end ground connection of tertiary coil L3, preferably passes through Second shunt resistance R2 ground connection.

In work process, by the triggering (when such as triggering level signal is high level) of triggering level signal, First coil L1 turns on, and makes the first normally opened contact K1 Guan Bi conducting by electromagnetic coupled.Now Under conditions of the one termination power end Vcc of one normally opened contact K1 and the first normally opened contact K1 Guan Bi, second Coil L2 turns on, and makes the second normally opened contact K2 Guan Bi conducting by electromagnetic coupled.Owing to second is normally opened The one of contact K2 terminates power end Vcc and the other end and the shorted on one end of the second coil L2, the most once Second normally opened contact K2 conducting, the second relay can form self-locking, even if the triggering of triggering level signal Stop (such as triggering level signal is low level), as long as power end Vcc maintains voltage, the second coil Electromagnetic coupled, and the second coil L2 and second just can be always maintained between L2 and the second normally opened contact K2 Normally opened contact K2 is always maintained at conducting state.Meanwhile, at the second coil L2 and the second normally opened contact K2 Between keep electromagnetic coupled and under conditions of each tending to remain on, tertiary coil L3 constant conduction, the Three normally opened contact K3 persistently remain closed the outfan of conducting state, i.e. on-off circuit and are persistently held on shape State.

Fig. 4 shows the on-off circuit with self-locking and isolation features according to third embodiment of the invention Circuit diagram, as shown in Figure 4, first isolating coupler the 100, second isolating coupler 200 and Three isolating couplers 300 are respectively the first transformator T1, the second transformator T2 and the 3rd transformator T3. Wherein, the first input block 110 and the first output unit 120 are respectively first primary and first level;The One primary receiver triggering level signal, preferably receives triggering level signal by the first shunt resistance R1, One end of first level is connected with power end.Second input block 210 and the second output unit 220 are respectively Second primary and second subprime;One end of second primary is connected with the other end of first level, second subprime One end is connected with power end, and the other end of second subprime and one end of the second primary connect.3rd input block 310 and the 3rd output unit 320 be respectively the 3rd primary and third time level;One end and second of 3rd primary The primary other end connects, and the other end ground connection of the 3rd primary is preferably connect by the second shunt resistance R2 Ground.

In work process, by the triggering (when such as triggering level signal is high level) of triggering level signal, First primary energising conducting, makes first level energising conducting by electromagnetic coupled.Now first level Under conditions of one termination power end Vcc and first level energising conducting, the second primary energising conducting, by electricity Magnetic coupling makes second subprime energising conducting.Due to second subprime one termination power end Vcc and the other end with The shorted on one end of the second primary, the most once second subprime energising conducting, the second transformator can form self-locking, Even if the triggering of triggering level signal stops (such as triggering level signal is low level), as long as power end Vcc Maintain voltage, just can be always maintained at electromagnetic coupled between the second primary and second subprime, and be always maintained at leading Logical state.Meanwhile, between the second primary and second subprime, keep electromagnetic coupled and each tend to remain on Under conditions of, the 3rd primary constant conduction, level persistently remains powered on conducting state, i.e. on-off circuit for the third time Outfan persistently tend to remain on.

It should be appreciated that for those of ordinary skills, can be improved according to the above description Or conversion, and all these modifications and variations all should belong to the protection domain of claims of the present invention.

Claims (9)

1. having an on-off circuit for self-locking and isolation features, the input of described on-off circuit receives triggering level Signal, the outfan of described on-off circuit turns under the triggering of described triggering level signal, it is characterised in that Described on-off circuit includes the first isolating coupler, the second isolating coupler and the 3rd isolating coupler;Wherein, Described first isolating coupler include the first input block and the first output unit;Described first input block connects Receiving described triggering level signal, one end of described first output unit is connected with power end;Electricity is triggered by described The triggering of ordinary mail number, starts the coupling between described first input block and described first output unit, so that institute State the first output unit conducting, and described trigger stop after, disconnect described first input block and described the Coupling between one output unit, so that described first output unit disconnects;
Described second isolating coupler include the second input block and the second output unit;Described second input block One end is connected with the other end of described first output unit, one end of described second output unit and described power end Connecting, the other end of described second output unit is connected with one end of described second input block;In order to pass through State the conducting of the first output unit, start the coupling between described second input block and described second output unit Close, so that described second output unit conducting, and after described first output unit disconnects, continue to institute State the coupling between the second input block and described second output unit;
Described 3rd isolating coupler include the 3rd input block and the 3rd output unit, described 3rd output unit Outfan is as the outfan of described on-off circuit;One end of described 3rd input block is single with described second input The other end of unit connects, and the other end ground connection of described 3rd input block, in order to by described second input block Conducting, start the coupling between described 3rd input block and described 3rd output unit, so that the described 3rd Output unit turns on;
Described first isolating coupler, described second isolating coupler and described 3rd isolating coupler are respectively first Photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler, or described first isolating coupler, institute State the second isolating coupler and described 3rd isolating coupler be respectively the first relay, the second relay and 3rd relay.
The on-off circuit with self-locking and isolation features the most according to claim 1, it is characterised in that described First isolating coupler, described second isolating coupler and described 3rd isolating coupler are respectively the first photoelectricity Bonder, the second photoelectrical coupler and the 3rd photoelectrical coupler;Wherein,
Described first input block and described first output unit are respectively the first luminous organ and the first light-receiving device;Described One luminous organ receives described triggering level signal, and one end of described first light-receiving device is connected with described power end; Described second input block and described second output unit are respectively the second luminous organ and the second light-receiving device;Described One end of two luminous organs is connected with the other end of described first light-receiving device, and one end of described second light-receiving device is with described Power end connects, and the other end of described second light-receiving device is connected with one end of described second luminous organ;
Described 3rd input block and described 3rd output unit are respectively the 3rd luminous organ and the 3rd light-receiving device;Described One end of three luminous organs is connected with the other end of described second luminous organ, another termination of described 3rd luminous organ Ground.
The on-off circuit with self-locking and isolation features the most according to claim 2, it is characterised in that described First luminous organ, described second luminous organ and the 3rd luminous organ are respectively the first light emitting diode, the second luminescence Diode and the 3rd light emitting diode;Described first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively It is the first phototriode, the second phototriode and the 3rd phototriode;Wherein,
Described first light emitting diode receives described triggering level signal, the colelctor electrode of described first phototriode and institute State power end to connect;
The positive pole of described second light emitting diode is connected with the emitter stage of described first phototriode, described second photoelectricity The colelctor electrode of audion is connected with described power end, the emitter stage of described second phototriode and described second The positive pole of optical diode connects;
The positive pole of described 3rd light emitting diode is connected with the negative pole of described second light emitting diode, described 3rd luminescence two The minus earth of pole pipe.
The on-off circuit with self-locking and isolation features the most according to claim 1, it is characterised in that described First isolating coupler, described second isolating coupler and described 3rd isolating coupler are respectively the first relay Device, the second relay and the 3rd relay;Wherein,
Described first input block and described first output unit are respectively first coil and the first normally opened contact;Described One coil receives described triggering level signal, and one end of described first normally opened contact is connected with described power end; Described second input block and described second output unit are respectively the second coil and the second normally opened contact;Described One end of two coil is connected with the other end of described first normally opened contact, one end of described second normally opened contact and institute Stating power end to connect, the other end of described second normally opened contact is connected with one end of described second coil;
Described 3rd input block and described 3rd output unit are respectively tertiary coil and the 3rd normally opened contact;Described One end of three-winding is connected with the other end of described second coil, the other end ground connection of described tertiary coil.
The on-off circuit with self-locking and isolation features the most according to claim 1, it is characterised in that described Triggering level signal is the one in square-wave signal, sine wave signal and sawtooth signal.
6. a light fixture, including light source and the on-off circuit with self-locking and isolation features, described light source is by described On-off circuit is connected to form current supply circuit with outside supply power supply;Wherein, the input of described on-off circuit Receiving triggering level signal, the outfan of described on-off circuit turns under the triggering of described triggering level signal, It is characterized in that, described on-off circuit includes the first isolating coupler, the second isolating coupler and the 3rd isolation Bonder;Wherein,
Described first isolating coupler include the first input block and the first output unit;Described first input block connects Receiving described triggering level signal, one end of described first output unit is connected with power end;Electricity is triggered by described The triggering of ordinary mail number, starts the coupling between described first input block and described first output unit, so that institute State the first output unit conducting, and described trigger stop after, disconnect described first input block and described the Coupling between one output unit, so that described first output unit disconnects;
Described second isolating coupler include the second input block and the second output unit;Described second input block One end is connected with the other end of described first output unit, one end of described second output unit and described power end Connecting, the other end of described second output unit is connected with one end of described second input block;In order to pass through State the conducting of the first output unit, start the coupling between described second input block and described second output unit Close, so that described second output unit conducting, and after described first output unit disconnects, continue to institute State the coupling between the second input block and described second output unit;
Described 3rd isolating coupler include the 3rd input block and the 3rd output unit, described 3rd output unit Outfan is connected with described light source and described supply power supply respectively as the outfan of described on-off circuit;Described One end of three input blocks is connected with the other end of described second input block, another of described 3rd input block End ground connection, in order to the conducting by described second input block, starts described 3rd input block and the described 3rd Coupling between output unit, so that described 3rd output unit conducting;
Described first isolating coupler, described second isolating coupler and described 3rd isolating coupler are respectively first Photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler, or described first isolating coupler, institute State the second isolating coupler and described 3rd isolating coupler be respectively the first relay, the second relay and 3rd relay.
Light fixture the most according to claim 6, it is characterised in that described first isolating coupler, described second Isolating coupler and described 3rd isolating coupler be respectively the first photoelectrical coupler, the second photoelectrical coupler with And the 3rd photoelectrical coupler;Wherein,
Described first input block and described first output unit are respectively the first luminous organ and the first light-receiving device;Described One luminous organ receives described triggering level signal, and one end of described first light-receiving device is connected with described power end; Described second input block and described second output unit are respectively the second luminous organ and the second light-receiving device;Described One end of two luminous organs is connected with the other end of described first light-receiving device, and one end of described second light-receiving device is with described Power end connects, and the other end of described second light-receiving device is connected with one end of described second luminous organ;
Described 3rd input block and described 3rd output unit are respectively the 3rd luminous organ and the 3rd light-receiving device;Described One end of three luminous organs is connected with the other end of described second luminous organ, another termination of described 3rd luminous organ Ground;The two ends of described 3rd light-receiving device are connected with described light source and described supply power supply respectively.
Light fixture the most according to claim 7, it is characterised in that described first luminous organ, described second luminescence Device and the 3rd luminous organ are respectively the first light emitting diode, the second light emitting diode and the 3rd light-emitting diodes Pipe;Described first light-receiving device, the second light-receiving device and the 3rd light-receiving device be respectively the first phototriode, second Phototriode and the 3rd phototriode;Wherein,
Described first light emitting diode receives described triggering level signal, the colelctor electrode of described first phototriode and institute State power end to connect;
The positive pole of described second light emitting diode is connected with the emitter stage of described first phototriode, described second photoelectricity The colelctor electrode of audion is connected with described power end, the emitter stage of described second phototriode and described second The positive pole of optical diode connects;
The positive pole of described 3rd light emitting diode is connected with the negative pole of described second light emitting diode, described 3rd luminescence two The minus earth of pole pipe;The colelctor electrode of described 3rd phototriode is connected with described supply power supply, emitter stage with Described light source connects.
Light fixture the most according to claim 6, it is characterised in that described first isolating coupler, described second Isolating coupler and described 3rd isolating coupler the respectively first relay, the second relay and the 3rd continue Electrical equipment;Wherein,
Described first input block and described first output unit are respectively first coil and the first normally opened contact;Described One coil receives described triggering level signal, and one end of described first normally opened contact is connected with described power end; Described second input block and described second output unit are respectively the second coil and the second normally opened contact;Described One end of two coil is connected with the other end of described first normally opened contact, one end of described second normally opened contact and institute Stating power end to connect, the other end of described second normally opened contact is connected with one end of described second coil;
Described 3rd input block and described 3rd output unit are respectively tertiary coil and the 3rd normally opened contact;Described One end of three-winding is connected with the other end of described second coil, the other end ground connection of described tertiary coil;Described The two ends of the 3rd normally opened contact are connected with described light source and described supply power supply respectively.
CN201210174214.1A 2012-05-30 2012-05-30 There is self-locking and the on-off circuit of isolation features and light fixture CN103457600B (en)

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CN104333075A (en) * 2014-11-10 2015-02-04 安徽省新方尊铸造科技有限公司 Electric bicycle charging socket based on iris recognition technology
CN104333073A (en) * 2014-11-10 2015-02-04 安徽省新方尊铸造科技有限公司 Electric bicycle charging socket based on palm print recognition technology
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