CN103457600A - Switching circuit with self-locking and isolating functions and lamp - Google Patents
Switching circuit with self-locking and isolating functions and lamp Download PDFInfo
- Publication number
- CN103457600A CN103457600A CN2012101742141A CN201210174214A CN103457600A CN 103457600 A CN103457600 A CN 103457600A CN 2012101742141 A CN2012101742141 A CN 2012101742141A CN 201210174214 A CN201210174214 A CN 201210174214A CN 103457600 A CN103457600 A CN 103457600A
- Authority
- CN
- China
- Prior art keywords
- output unit
- light
- input unit
- photophore
- switching circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The invention discloses a switching circuit with self-locking and isolating functions and a lamp. The switching circuit simple in structure and easy to implement comprises a first isolation coupler, a second isolation coupler and a third isolation coupler. The first isolation coupler comprises a first input unit and a first output unit. The first input unit receives and triggers level signals, after triggering, the first output unit is switched on by coupling with the first input unit, and coupling is disconnected to have the first output unit disconnected to realize the isolating function after the triggering is stopped. The second isolation coupler comprises a second input unit and a second output unit. After the first output unit is switched on, the second output unit is allowed to be switched on through coupling, and coupling between the second input unit and the second output unit is sustained after the first output unit is disconnected, so that the self-locking function is realized. The third isolation coupler comprises a third input unit and a third output unit. The second input unit is switched on, so that the third output unit, serving as an output end of the switching circuit, is switched on through coupling.
Description
Technical field
The present invention relates to switching circuit and light fixture, relate in particular to a kind of switching circuit and light fixture with self-locking and isolation features.
Background technology
Whether switching circuit is a kind of circuit commonly used in electronic equipment, is connected between supply power and operating circuit, by conducting or the shutoff of switching circuit, controls operating circuit from the supply power power taking, thereby control electronic equipment, work.The type of switching circuit has multiple, for the triggering by triggering level and the switching circuit of conducting need to, after the switching circuit triggering and conducting, continue to maintain the conducting of switching circuit in practical application under many circumstances.Method commonly used is to set up an integrated circuit (IC) as holding circuit again at present, in order to continue to maintain the conducting of this switching circuit after the switching circuit conducting.But, the common more complicated of the circuit structure of this holding circuit, components and parts are more, and not only cost is high, and has reduced the reliability of the whole circuit structure of electronic equipment.On the other hand, at switching circuit, maintain in the process of conducting, triggering level signal and switching circuit still keep direct electrical connection, can't be after executive circuit (being switching circuit) enters operating state herein the impact of isolation control signal (being herein the triggering level signal).
Summary of the invention
The technical problem to be solved in the present invention is in prior art, for the lasting conducting that maintains switching circuit, need to setting up integrated circuit (IC), cause cost to improve and the defect of circuit structure complexity, and a kind of switching circuit and light fixture with self-locking and isolation features is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of switching circuit with self-locking and isolation features is provided, the input of described switching circuit receives the triggering level signal, the conducting under the triggering of described triggering level signal of the output of described switching circuit, described switching circuit comprises the first isolating coupler, the second isolating coupler and the 3rd isolating coupler; Wherein,
Described the first isolating coupler comprise the first input unit and the first output unit; Described the first input unit receives described triggering level signal, and an end of described the first output unit is connected with power end; In order to the triggering by described triggering level signal, start the coupling between described the first input unit and described the first output unit, so that described the first output unit conducting, and after described triggering stops, disconnect the coupling between described the first input unit and described the first output unit, so that described the first output unit disconnects;
Described the second isolating coupler comprise the second input unit and the second output unit; One end of described the second input unit is connected with the other end of described the first output unit, and an end of described the second output unit is connected with described power end, and the other end of described the second output unit is connected with an end of described the second input unit; In order to the conducting by described the first output unit, start the coupling between described the second input unit and described the second output unit, so that described the second output unit conducting, and, after described the first output unit disconnects, continue to maintain the coupling between described the second input unit and described the second output unit;
Described the 3rd isolating coupler comprise the 3rd input unit and the 3rd output unit, the output of described the 3rd output unit is as the output of described switching circuit; One end of described the 3rd input unit is connected with the other end of described the second input unit, the other end ground connection of described the 3rd input unit, in order to the conducting by described the second input unit, start the coupling between described the 3rd input unit and described the 3rd output unit, so that described the 3rd output unit conducting.
In the switching circuit with self-locking and isolation features of the foundation embodiment of the present invention, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler; Wherein,
Described the first input unit and described the first output unit are respectively the first photophore and the first light-receiving device; Described the first photophore receives described triggering level signal, and an end of described the first light-receiving device is connected with described power end;
Described the second input unit and described the second output unit are respectively the second photophore and the second light-receiving device; One end of described the second photophore is connected with the other end of described the first light-receiving device, and an end of described the second light-receiving device is connected with described power end, and the other end of described the second light-receiving device is connected with an end of described the second photophore;
Described the 3rd input unit and described the 3rd output unit are respectively the 3rd photophore and the 3rd light-receiving device; One end of described the 3rd photophore is connected with the other end of described the second photophore, the other end ground connection of described the 3rd photophore.
In the switching circuit with self-locking and isolation features of the foundation embodiment of the present invention, described the first photophore, described the second photophore and the 3rd photophore are respectively the first light-emitting diode, the second light-emitting diode and the 3rd light-emitting diode; Described the first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode, the second phototriode and the 3rd phototriode; Wherein,
Described the first light-emitting diode receives described triggering level signal, and the collector electrode of described the first phototriode is connected with described power end;
The positive pole of described the second light-emitting diode is connected with the emitter of described the first phototriode, and the collector electrode of described the second phototriode is connected with described power end, and the emitter of described the second phototriode is connected with the positive pole of described the second light-emitting diode;
The positive pole of described the 3rd light-emitting diode is connected with the negative pole of described the second light-emitting diode, the minus earth of described the 3rd light-emitting diode.
In the switching circuit with self-locking and isolation features of the foundation embodiment of the present invention, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first relay, the second relay and the 3rd relay; Wherein,
Described the first input unit and described the first output unit are respectively the first coil and the first normally opened contact; Described the first coil receives described triggering level signal, and an end of described the first normally opened contact is connected with described power end;
Described the second input unit and described the second output unit are respectively the second coil and the second normally opened contact; One end of described the second coil is connected with the other end of described the first normally opened contact, and an end of described the second normally opened contact is connected with described power end, and the other end of described the second normally opened contact is connected with an end of described the second coil;
Described the 3rd input unit and described the 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 the second coil, the other end ground connection of described tertiary coil.
In the switching circuit with self-locking and isolation features of the foundation embodiment of the present invention, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first transformer, the second transformer and the 3rd transformer; Wherein,
Described the first input unit and described the first output unit are respectively first elementary and first level; The described triggering level signal of the described first elementary reception, an end of described first level is connected with described power end;
Described the second input unit and described the second output unit are respectively the second elementary and second subprime; Described second an elementary end is connected with the other end of described first level, and an end of described second subprime is connected with described power end, and the other end of a described second subprime end elementary with described second is connected;
Described the 3rd input unit and described the 3rd output unit be respectively the 3rd elementary and for the third time the level; The described the 3rd elementary end other end elementary with described second is connected, the described the 3rd elementary other end ground connection.
In the switching circuit with self-locking and isolation features of the foundation embodiment of the present invention, described triggering level signal is a kind of in square-wave signal, sine wave signal and sawtooth signal.
The present invention also provides a kind of light fixture, comprises light source and the switching circuit with self-locking and isolation features, and described light source is connected to form current supply circuit by described switching circuit with outside supply power; Wherein, the input of described switching circuit receives the triggering level signal, the conducting under the triggering of described triggering level signal of the output of described switching circuit, and described switching circuit comprises the first isolating coupler, the second isolating coupler and the 3rd isolating coupler; Wherein,
Described the first isolating coupler comprise the first input unit and the first output unit; Described the first input unit receives described triggering level signal, and an end of described the first output unit is connected with power end; In order to the triggering by described triggering level signal, start the coupling between described the first input unit and described the first output unit, so that described the first output unit conducting, and after described triggering stops, disconnect the coupling between described the first input unit and described the first output unit, so that described the first output unit disconnects;
Described the second isolating coupler comprise the second input unit and the second output unit; One end of described the second input unit is connected with the other end of described the first output unit, and an end of described the second output unit is connected with described power end, and the other end of described the second output unit is connected with an end of described the second input unit; In order to the conducting by described the first output unit, start the coupling between described the second input unit and described the second output unit, so that described the second output unit conducting, and, after described the first output unit disconnects, continue to maintain the coupling between described the second input unit and described the second output unit;
Described the 3rd isolating coupler comprise the 3rd input unit and the 3rd output unit, the output of described the 3rd output unit is connected with described supply power with described light source respectively as the output of described switching circuit; One end of described the 3rd input unit is connected with the other end of described the second input unit, the other end ground connection of described the 3rd input unit, in order to the conducting by described the second input unit, start the coupling between described the 3rd input unit and described the 3rd output unit, so that described the 3rd output unit conducting.
In the light fixture of the foundation embodiment of the present invention, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler; Wherein,
Described the first input unit and described the first output unit are respectively the first photophore and the first light-receiving device; Described the first photophore receives described triggering level signal, and an end of described the first light-receiving device is connected with described power end;
Described the second input unit and described the second output unit are respectively the second photophore and the second light-receiving device; One end of described the second photophore is connected with the other end of described the first light-receiving device, and an end of described the second light-receiving device is connected with described power end, and the other end of described the second light-receiving device is connected with an end of described the second photophore;
Described the 3rd input unit and described the 3rd output unit are respectively the 3rd photophore and the 3rd light-receiving device; One end of described the 3rd photophore is connected with the other end of described the second photophore, the other end ground connection of described the 3rd photophore; The two ends of described the 3rd light-receiving device are connected with described supply power with described light source respectively.
In the light fixture of the foundation embodiment of the present invention, described the first photophore, described the second photophore and the 3rd photophore are respectively the first light-emitting diode, the second light-emitting diode and the 3rd light-emitting diode; Described the first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode, the second phototriode and the 3rd phototriode; Wherein,
Described the first light-emitting diode receives described triggering level signal, and the collector electrode of described the first phototriode is connected with described power end;
The positive pole of described the second light-emitting diode is connected with the emitter of described the first phototriode, and the collector electrode of described the second phototriode is connected with described power end, and the emitter of described the second phototriode is connected with the positive pole of described the second light-emitting diode;
The positive pole of described the 3rd light-emitting diode is connected with the negative pole of described the second light-emitting diode, the minus earth of described the 3rd light-emitting diode; The collector electrode of described the 3rd phototriode is connected with described supply power, emitter is connected with described light source.
In the light fixture of the foundation embodiment of the present invention, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first relay, the second relay and the 3rd relay; Wherein,
Described the first input unit and described the first output unit are respectively the first coil and the first normally opened contact; Described the first coil receives described triggering level signal, and an end of described the first normally opened contact is connected with described power end;
Described the second input unit and described the second output unit are respectively the second coil and the second normally opened contact; One end of described the second coil is connected with the other end of described the first normally opened contact, and an end of described the second normally opened contact is connected with described power end, and the other end of described the second normally opened contact is connected with an end of described the second coil;
Described the 3rd input unit and described the 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 the second coil, the other end ground connection of described tertiary coil; The two ends of described the 3rd normally opened contact are connected with described supply power with described light source respectively.
The beneficial effect that the present invention produces is: according in switching circuit of the present invention, only adopted three isolating couplers, just can, under the triggering of triggering level signal, make its output conducting, realized being connected of supply power and operating circuit, simple in structure and cost is low.Therefore in addition, because the second isolating coupler has auto-lock function, can continue to maintain the conducting of the output of switching circuit after the switching circuit triggering and conducting, thereby no longer need to set up the conducting that a complexity and the high integrated circuit of cost maintain switching circuit.And, due to after triggering stops, the first input unit in the first isolating coupler and the coupling between the first output unit disconnect, thereby have realized the isolation between switching circuit and external trigger level signal, so this switching circuit also has isolation features.
In addition, in foundation light fixture of the present invention, this light fixture comprises switching circuit and light source, and this switching circuit has only adopted three isolating couplers, just can be under the triggering of triggering level signal, make its output conducting, thereby be communicated with light source in light fixture and outside supply power, simple in structure and cost is low.Therefore in addition, because the second isolating coupler has auto-lock function, can continue to maintain the conducting of the output of switching circuit after the switching circuit triggering and conducting, thereby no longer need to set up the conducting that a complexity and the high integrated circuit of cost maintain switching circuit.And, due to after triggering stops, the first input unit in the first isolating coupler and the coupling between the first output unit disconnect, thereby have realized the isolation between switching circuit and external trigger level signal, so this switching circuit also has isolation features.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the logic diagram according to the switching circuit with self-locking and isolation features of the embodiment of the present invention;
Fig. 2 is the circuit diagram according to the switching circuit with self-locking and isolation features of first embodiment of the invention;
Fig. 3 is the circuit diagram according to the switching circuit with self-locking and isolation features of second embodiment of the invention;
Fig. 4 is the circuit diagram according to the switching circuit with self-locking and isolation features of third embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Light fixture according to the embodiment of the present invention comprises light source and the switching circuit with self-locking and isolation features, and wherein, light source is connected to form current supply circuit by switching circuit with outside supply power.Particularly, Fig. 1 shows the logic diagram according to the switching circuit with self-locking and isolation features of the embodiment of the present invention, as shown in Figure 1, the input of switching circuit receives the triggering level signal, and output connects respectively light source and supply power (not shown).The output of switching circuit conducting under the triggering of triggering level signal, and can be communicated with light source and supply power by the conducting of output, thus realize that light source starts working from the supply power power taking.Can adopt level triggers or edging trigger herein, the triggering level signal can be a kind of of square-wave signal, sine wave signal or sawtooth signal.Below will take and adopt the square wave level signal to carry out high level to trigger as example and set forth, but those skilled in the art should know, and also can adopt other triggering mode and triggering level.Now, when the magnitude of voltage of triggering level signal during higher than preset value (when the triggering level signal is high level), the output triggering and conducting of switching circuit.
Particularly, switching circuit comprises the first isolating coupler 100, the second isolating coupler 200 and the 3rd isolating coupler 300.Further, the first isolating coupler 100 comprises the first input unit 110 and the first output unit 120; The second isolating coupler 200 comprise the second input unit 210 and the second output unit 220; And the 3rd isolating coupler 300 comprise the 3rd input unit 310 and the 3rd output unit 320.For any one isolating coupler, after input unit is by the work of external control signal triggering and conducting, start the coupling between input unit and output unit, such as electromagnetic coupled or photoelectric coupling etc., thus make output unit conducting work.
Herein, the input of the first input unit 110 is brought in and is received the triggering level signal as the input of whole switching circuit, and an end of the first output unit 120 is connected with power end Vcc.One end of the second input unit 210 is connected with the other end of the first output unit 120, and an end of the second output unit 220 is connected with power end Vcc, and the other end of the second output unit 220 is connected with an end of the second input unit 210.The output of the 3rd output unit 320 is as the output of switching circuit; One end of the 3rd input unit 310 is connected with the other end of the second input unit 210, the other end ground connection of the 3rd input unit 310.Should be understood that, power end Vcc herein is the power supply that maintains switching circuit work, is different from the working power in above-mentioned electronic equipment.
In the course of work, the triggering (for example, when the triggering level signal is high level) by the triggering level signal, start the coupling between the first input unit 110 and the first output unit 120, so that the first output unit 120 conducting work.Now, under the condition of a termination power end Vcc of the first output unit 120 and the first output unit 120 conductings, start the coupling between the second input unit 210 and the second output unit 220, so that the second output unit 220 conductings.Simultaneously, by the conducting of the second input unit 210, start the coupling between the 3rd input unit 310 and the 3rd output unit 320, so that the 3rd output unit 320 conductings, so far the output conducting of whole switching circuit.
For example, when the triggering of triggering level signal stops (the triggering level signal is low level), the coupling between the first input unit 110 and the first output unit 120 disconnects, and makes the first no longer conducting of output unit 120.But because an end of the second output unit 220 also is connected with power end Vcc, and the other end is connected with an end of the second input unit 210, and now because the coupling between the second input unit 210 and the second output unit 220 does not disconnect, the second output unit 220 still keeps conducting, therefore can maintain the coupling between the second input unit 210 and the second output unit 220 by the second output unit 220, thereby the second isolating coupler 200 has been realized auto-lock function.In this case, as long as power end Vcc maintains voltage, supply with, can maintain the coupling between the second input unit 210 and the second output unit 220 always.Correspondingly, lasting conducting due to the second input unit 210, coupling between the 3rd input unit 310 and the 3rd output unit 320 also can be maintained always, makes the 3rd output unit 320 continue conducting, and the output of whole switching circuit continues conducting then.
As can be seen from the above, according to the switching circuit of the embodiment of the present invention, under the triggering of triggering level signal, its output conducting, realized being connected of supply power and light source.Therefore in addition, because the second isolating coupler 200 has auto-lock function, can continue to maintain the conducting of the output of switching circuit after the switching circuit triggering and conducting.And, due to after triggering stops, the first input unit 110 in the first isolating coupler 100 and the coupling between the first output unit 120 disconnect, thereby have realized the isolation between switching circuit and external trigger level signal, so this switching circuit has isolation features.
In the first embodiment of the present invention, the first isolating coupler 100, the second isolating coupler 200 and the 3rd isolating coupler 300 are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler.Wherein, the first input unit 110 and the first output unit 120 are respectively the first photophore and the first light-receiving device; The first photophore receives the triggering level signal, and an end of the first light-receiving device is connected with power end.The second input unit 210 and the second output unit 220 are respectively the second photophore and the second light-receiving device; One end of the second photophore is connected with the other end of the first light-receiving device, and an end of the second light-receiving device is connected with power end, and the other end of the second light-receiving device is connected with an end of the second photophore.The 3rd input unit 310 and the 3rd output unit 320 are respectively the 3rd photophore and the 3rd light-receiving device; One end of the 3rd photophore is connected with the other end of the second photophore, the other end ground connection of the 3rd photophore.
Below will to this embodiment, be set forth with a concrete implementation; those skilled in the art should know; following implementation is only used for example, is not limitation of the present invention, and the various of this implementation are equal to and substitute all within protection scope of the present invention.
Fig. 2 shows the circuit diagram according to the switching circuit with self-locking and isolation features of first embodiment of the invention, as shown in Figure 2, the first photophore, the second photophore and the 3rd photophore are respectively the first light-emitting diode GY1, the second light-emitting diode GY2 and the 3rd light-emitting diode GY3; The first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode GG1, the second phototriode GG2 and the 3rd phototriode GG3.Wherein, the first light-emitting diode GY1 receives the triggering level signal, preferably by the first shunt resistance R1, receives the triggering level signal, and the collector electrode of the first phototriode GG1 is connected with power end.The positive pole of the second light-emitting diode GY2 is connected with the emitter of the first phototriode GG2, and the collector electrode of the second phototriode GG2 is connected with power end, and the emitter of the second phototriode GG2 is connected with the positive pole of the second light-emitting diode GY2.The positive pole of the 3rd light-emitting diode GY3 is connected with the negative pole of the second light-emitting diode GY2, and the minus earth of the 3rd light-emitting diode GY3, preferably by the second shunt resistance R2 ground connection.
In the course of work, triggering (for example, when the triggering level signal is high level) by the triggering level signal, the first light-emitting diode GY1 conducting luminous, the first phototriode GG1 is subject to conducting after light, by photoelectric coupling, makes the first phototriode lead GG1 logical.Now the collector electrode at the first phototriode GG1 connects under the condition of power end Vcc and the first phototriode conducting, the second light-emitting diode GY2 conducting luminous, and the second phototriode GG2 is subject to conducting after light.Due to the positive pole of the second light-emitting diode GY2 and the emitter short circuit of the second phototriode GG2, and the collector electrode of the second phototriode GG2 is connected with power end Vcc, once therefore the second phototriode GG2 conducting, the second photoelectrical coupler can form self-locking, for example, even the triggering of triggering level signal stops (the triggering level signal is low level), as long as power end Vcc maintains voltage, just can keep photoelectric coupling between the second light-emitting diode GY2 and the second phototriode GG2 always, and keep conducting state always.Simultaneously, between the second light-emitting diode GY2 and the second phototriode GG2, keeping under the condition of photoelectric coupling and each self-sustaining conducting state, the 3rd light-emitting diode GY3 continues conducting luminous, the 3rd phototriode GG3 is subject to continue to keep conducting state after light, and the output of switching circuit continues to keep conducting state.
Fig. 3 shows the circuit diagram according to the switching circuit with self-locking and isolation features of second embodiment of the invention, as shown in Figure 3, the first isolating coupler 100, the second isolating coupler 200 and the 3rd isolating coupler 300 are respectively the first relay, the second relay and the 3rd relay.Wherein, the first input unit 110 and the first output unit 120 are respectively the first coil L1 and the first normally opened contact K1; The first coil L1 receives the triggering level signal, preferably, by the first shunt resistance R1, receives the triggering level signal, and the end of the first normally opened contact K1 is connected Vcc with power end.The second input unit 210 and the second output unit 220 are respectively the second coil L2 and the second normally opened contact K2; The end of the second coil L2 is connected with the other end of the first normally opened contact K1, and the end of the second normally opened contact K2 is connected with power end Vcc, and the other end of the second normally opened contact K2 is connected with the end of the second coil L2.The 3rd input unit 310 and the 3rd output unit 320 are respectively tertiary coil L3 and the 3rd normally opened contact K3; The end of tertiary coil L3 is connected with the other end of the second coil L2, and the other end ground connection of tertiary coil L3, preferably by the second shunt resistance R2 ground connection.
In the course of work, for example, by the triggering (when the triggering level signal is high level) of triggering level signal, the first coil L1 conducting, make the closed conducting of the first normally opened contact K1 by electromagnetic coupled.Now, under the condition of the termination power end Vcc of the first normally opened contact K1 and the first normally opened contact K1 closure, the second coil L2 conducting, make the closed conducting of the second normally opened contact K2 by electromagnetic coupled.Due to the termination power end Vcc of the second normally opened contact K2 and the end short circuit of the other end and the second coil L2, once therefore the second normally opened contact K2 conducting, the second relay can form self-locking, for example, even the triggering of triggering level signal stops (the triggering level signal is low level), as long as power end Vcc maintains voltage, just can keep electromagnetic coupled between the second coil L2 and the second normally opened contact K2, and the second coil L2 and the second normally opened contact K2 keep conducting state always always.Simultaneously, between the second coil L2 and the second normally opened contact K2, keeping under the condition of electromagnetic coupled and each self-sustaining conducting state, tertiary coil L3 continues conducting, and the 3rd normally opened contact K3 continues to remain closed conducting state, and the output of switching circuit continues to keep conducting state.
Fig. 4 shows the circuit diagram according to the switching circuit with self-locking and isolation features of third embodiment of the invention, as shown in Figure 4, the first isolating coupler 100, the second isolating coupler 200 and the 3rd isolating coupler 300 are respectively the first transformer T1, the second transformer T2 and the 3rd transformer T3.Wherein, the first input unit 110 and the first output unit 120 are respectively first elementary and first level; The first elementary reception triggering level signal, preferably receive the triggering level signal by the first shunt resistance R1, and an end of first level is connected with power end.The second input unit 210 and the second output unit 220 are respectively the second elementary and second subprime; A second elementary end is connected with the other end of first level, and an end of second subprime is connected with power end, and the other end of a second subprime end elementary with second is connected.The 3rd input unit 310 and the 3rd output unit 320 be respectively the 3rd elementary and for the third time the level; The 3rd elementary end other end elementary with second is connected, and the 3rd elementary other end ground connection, preferably by the second shunt resistance R2 ground connection.
In the course of work, for example, by the triggering (when the triggering level signal is high level) of triggering level signal, the first elementary energising conducting, make first level energising conducting by electromagnetic coupled.Now, under the condition of a termination power end Vcc of first level and first level energising conducting, the second elementary energising conducting, make second subprime energising conducting by electromagnetic coupled.A termination power end Vcc and the other end and second an elementary end short circuit due to second subprime, once therefore second subprime energising conducting, the second transformer can form self-locking, for example, even the triggering of triggering level signal stops (the triggering level signal is low level), as long as power end Vcc maintains voltage, just can keep electromagnetic coupled between the second elementary and second subprime always, and keep conducting state always., between the second elementary and second subprime, keeping under the condition of electromagnetic coupled and each self-sustaining conducting state simultaneously, the 3rd elementary lasting conducting, level continues to keep the energising conducting state for the third time, and the output of switching circuit continues to keep conducting state.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the switching circuit with self-locking and isolation features, the input of described switching circuit receives the triggering level signal, the conducting under the triggering of described triggering level signal of the output of described switching circuit, it is characterized in that, described switching circuit comprises the first isolating coupler, the second isolating coupler and the 3rd isolating coupler; Wherein,
Described the first isolating coupler comprise the first input unit and the first output unit; Described the first input unit receives described triggering level signal, and an end of described the first output unit is connected with power end; In order to the triggering by described triggering level signal, start the coupling between described the first input unit and described the first output unit, so that described the first output unit conducting, and after described triggering stops, disconnect the coupling between described the first input unit and described the first output unit, so that described the first output unit disconnects;
Described the second isolating coupler comprise the second input unit and the second output unit; One end of described the second input unit is connected with the other end of described the first output unit, and an end of described the second output unit is connected with described power end, and the other end of described the second output unit is connected with an end of described the second input unit; In order to the conducting by described the first output unit, start the coupling between described the second input unit and described the second output unit, so that described the second output unit conducting, and, after described the first output unit disconnects, continue to maintain the coupling between described the second input unit and described the second output unit;
Described the 3rd isolating coupler comprise the 3rd input unit and the 3rd output unit, the output of described the 3rd output unit is as the output of described switching circuit; One end of described the 3rd input unit is connected with the other end of described the second input unit, the other end ground connection of described the 3rd input unit, in order to the conducting by described the second input unit, start the coupling between described the 3rd input unit and described the 3rd output unit, so that described the 3rd output unit conducting.
2. the switching circuit with self-locking and isolation features according to claim 1, it is characterized in that, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler; Wherein,
Described the first input unit and described the first output unit are respectively the first photophore and the first light-receiving device; Described the first photophore receives described triggering level signal, and an end of described the first light-receiving device is connected with described power end;
Described the second input unit and described the second output unit are respectively the second photophore and the second light-receiving device; One end of described the second photophore is connected with the other end of described the first light-receiving device, and an end of described the second light-receiving device is connected with described power end, and the other end of described the second light-receiving device is connected with an end of described the second photophore;
Described the 3rd input unit and described the 3rd output unit are respectively the 3rd photophore and the 3rd light-receiving device; One end of described the 3rd photophore is connected with the other end of described the second photophore, the other end ground connection of described the 3rd photophore.
3. the switching circuit with self-locking and isolation features according to claim 2, it is characterized in that, described the first photophore, described the second photophore and the 3rd photophore are respectively the first light-emitting diode, the second light-emitting diode and the 3rd light-emitting diode; Described the first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode, the second phototriode and the 3rd phototriode; Wherein,
Described the first light-emitting diode receives described triggering level signal, and the collector electrode of described the first phototriode is connected with described power end;
The positive pole of described the second light-emitting diode is connected with the emitter of described the first phototriode, and the collector electrode of described the second phototriode is connected with described power end, and the emitter of described the second phototriode is connected with the positive pole of described the second light-emitting diode;
The positive pole of described the 3rd light-emitting diode is connected with the negative pole of described the second light-emitting diode, the minus earth of described the 3rd light-emitting diode.
4. the switching circuit with self-locking and isolation features according to claim 1, it is characterized in that, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first relay, the second relay and the 3rd relay; Wherein,
Described the first input unit and described the first output unit are respectively the first coil and the first normally opened contact; Described the first coil receives described triggering level signal, and an end of described the first normally opened contact is connected with described power end;
Described the second input unit and described the second output unit are respectively the second coil and the second normally opened contact; One end of described the second coil is connected with the other end of described the first normally opened contact, and an end of described the second normally opened contact is connected with described power end, and the other end of described the second normally opened contact is connected with an end of described the second coil;
Described the 3rd input unit and described the 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 the second coil, the other end ground connection of described tertiary coil.
5. the switching circuit with self-locking and isolation features according to claim 1, it is characterized in that, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first transformer, the second transformer and the 3rd transformer; Wherein,
Described the first input unit and described the first output unit are respectively first elementary and first level; The described triggering level signal of the described first elementary reception, an end of described first level is connected with described power end;
Described the second input unit and described the second output unit are respectively the second elementary and second subprime; Described second an elementary end is connected with the other end of described first level, and an end of described second subprime is connected with described power end, and the other end of a described second subprime end elementary with described second is connected;
Described the 3rd input unit and described the 3rd output unit be respectively the 3rd elementary and for the third time the level; The described the 3rd elementary end other end elementary with described second is connected, the described the 3rd elementary other end ground connection.
6. the switching circuit with self-locking and isolation features according to claim 1, is characterized in that, described triggering level signal is a kind of in square-wave signal, sine wave signal and sawtooth signal.
7. a light fixture, comprise light source and the switching circuit with self-locking and isolation features, and described light source is connected to form current supply circuit by described switching circuit with outside supply power; Wherein, the input of described switching circuit receives the triggering level signal, the conducting under the triggering of described triggering level signal of the output of described switching circuit, is characterized in that, described switching circuit comprises the first isolating coupler, the second isolating coupler and the 3rd isolating coupler; Wherein,
Described the first isolating coupler comprise the first input unit and the first output unit; Described the first input unit receives described triggering level signal, and an end of described the first output unit is connected with power end; In order to the triggering by described triggering level signal, start the coupling between described the first input unit and described the first output unit, so that described the first output unit conducting, and after described triggering stops, disconnect the coupling between described the first input unit and described the first output unit, so that described the first output unit disconnects;
Described the second isolating coupler comprise the second input unit and the second output unit; One end of described the second input unit is connected with the other end of described the first output unit, and an end of described the second output unit is connected with described power end, and the other end of described the second output unit is connected with an end of described the second input unit; In order to the conducting by described the first output unit, start the coupling between described the second input unit and described the second output unit, so that described the second output unit conducting, and, after described the first output unit disconnects, continue to maintain the coupling between described the second input unit and described the second output unit;
Described the 3rd isolating coupler comprise the 3rd input unit and the 3rd output unit, the output of described the 3rd output unit is connected with described supply power with described light source respectively as the output of described switching circuit; One end of described the 3rd input unit is connected with the other end of described the second input unit, the other end ground connection of described the 3rd input unit, in order to the conducting by described the second input unit, start the coupling between described the 3rd input unit and described the 3rd output unit, so that described the 3rd output unit conducting.
8. light fixture according to claim 7, is characterized in that, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler; Wherein,
Described the first input unit and described the first output unit are respectively the first photophore and the first light-receiving device; Described the first photophore receives described triggering level signal, and an end of described the first light-receiving device is connected with described power end;
Described the second input unit and described the second output unit are respectively the second photophore and the second light-receiving device; One end of described the second photophore is connected with the other end of described the first light-receiving device, and an end of described the second light-receiving device is connected with described power end, and the other end of described the second light-receiving device is connected with an end of described the second photophore;
Described the 3rd input unit and described the 3rd output unit are respectively the 3rd photophore and the 3rd light-receiving device; One end of described the 3rd photophore is connected with the other end of described the second photophore, the other end ground connection of described the 3rd photophore; The two ends of described the 3rd light-receiving device are connected with described supply power with described light source respectively.
9. light fixture according to claim 8, is characterized in that, described the first photophore, described the second photophore and the 3rd photophore are respectively the first light-emitting diode, the second light-emitting diode and the 3rd light-emitting diode; Described the first light-receiving device, the second light-receiving device and the 3rd light-receiving device are respectively the first phototriode, the second phototriode and the 3rd phototriode; Wherein,
Described the first light-emitting diode receives described triggering level signal, and the collector electrode of described the first phototriode is connected with described power end;
The positive pole of described the second light-emitting diode is connected with the emitter of described the first phototriode, and the collector electrode of described the second phototriode is connected with described power end, and the emitter of described the second phototriode is connected with the positive pole of described the second light-emitting diode;
The positive pole of described the 3rd light-emitting diode is connected with the negative pole of described the second light-emitting diode, the minus earth of described the 3rd light-emitting diode; The collector electrode of described the 3rd phototriode is connected with described supply power, emitter is connected with described light source.
10. light fixture according to claim 7, is characterized in that, described the first isolating coupler, described the second isolating coupler and described the 3rd isolating coupler are respectively the first relay, the second relay and the 3rd relay; Wherein,
Described the first input unit and described the first output unit are respectively the first coil and the first normally opened contact; Described the first coil receives described triggering level signal, and an end of described the first normally opened contact is connected with described power end;
Described the second input unit and described the second output unit are respectively the second coil and the second normally opened contact; One end of described the second coil is connected with the other end of described the first normally opened contact, and an end of described the second normally opened contact is connected with described power end, and the other end of described the second normally opened contact is connected with an end of described the second coil;
Described the 3rd input unit and described the 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 the second coil, the other end ground connection of described tertiary coil; The two ends of described the 3rd normally opened contact are connected with described supply power with described light source respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174214.1A CN103457600B (en) | 2012-05-30 | 2012-05-30 | There is self-locking and the on-off circuit of isolation features and light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174214.1A CN103457600B (en) | 2012-05-30 | 2012-05-30 | There is self-locking and the on-off circuit of isolation features and light fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103457600A true CN103457600A (en) | 2013-12-18 |
| CN103457600B CN103457600B (en) | 2016-12-14 |
Family
ID=49739632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210174214.1A Expired - Fee Related CN103457600B (en) | 2012-05-30 | 2012-05-30 | There is self-locking and the on-off circuit of isolation features and light fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103457600B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333072A (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 voice recognition technology |
| CN104333074A (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 hand gesture image recognition technology |
| 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 |
| CN104362698A (en) * | 2014-11-10 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Electric-vehicle charging board adopting NFC (near field communication) identification technology |
| CN104362697A (en) * | 2014-11-10 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Electric-vehicle charging board adopting IC (intelligent card) identification technology |
| CN104393637A (en) * | 2014-11-10 | 2015-03-04 | 安徽省新方尊铸造科技有限公司 | Electric bicycle charging plug board through fingerprint identification technology |
| CN104538995A (en) * | 2014-11-10 | 2015-04-22 | 安徽省新方尊铸造科技有限公司 | Electric bicycle charging socket adopting electronic coded lock technology |
| CN104578247A (en) * | 2014-11-10 | 2015-04-29 | 安徽省新方尊铸造科技有限公司 | Electric vehicle charging plug board adopting face recognition system |
| CN111969999A (en) * | 2020-06-28 | 2020-11-20 | 上海宇航系统工程研究所 | Reliable carrier rocket separation signal isolation detection and self-locking circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0154086B1 (en) * | 1995-12-29 | 1998-10-15 | 김태구 | Veryfying device for lighting condition of a car brake light |
| JP2000068540A (en) * | 1998-08-19 | 2000-03-03 | Honda Motor Co Ltd | Solar power generator |
| CN200990007Y (en) * | 2006-09-29 | 2007-12-12 | 北京集万讯电子技术有限公司 | Control device |
| CN101178985A (en) * | 2007-11-09 | 2008-05-14 | 天津市百利电气有限公司 | Automatic change-over and control method with self-diagnosis output function |
| CN101614795A (en) * | 2009-07-21 | 2009-12-30 | 北京中纺锐力机电有限公司 | A kind of default-phase signal detection circuit for three-phase power |
| CN201757764U (en) * | 2009-11-05 | 2011-03-09 | 中国石油大学(华东) | Simple general type full wave zero-crossing detection circuit |
-
2012
- 2012-05-30 CN CN201210174214.1A patent/CN103457600B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0154086B1 (en) * | 1995-12-29 | 1998-10-15 | 김태구 | Veryfying device for lighting condition of a car brake light |
| JP2000068540A (en) * | 1998-08-19 | 2000-03-03 | Honda Motor Co Ltd | Solar power generator |
| CN200990007Y (en) * | 2006-09-29 | 2007-12-12 | 北京集万讯电子技术有限公司 | Control device |
| CN101178985A (en) * | 2007-11-09 | 2008-05-14 | 天津市百利电气有限公司 | Automatic change-over and control method with self-diagnosis output function |
| CN101614795A (en) * | 2009-07-21 | 2009-12-30 | 北京中纺锐力机电有限公司 | A kind of default-phase signal detection circuit for three-phase power |
| CN201757764U (en) * | 2009-11-05 | 2011-03-09 | 中国石油大学(华东) | Simple general type full wave zero-crossing detection circuit |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333072A (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 voice recognition technology |
| CN104333074A (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 hand gesture image recognition technology |
| 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 |
| CN104362698A (en) * | 2014-11-10 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Electric-vehicle charging board adopting NFC (near field communication) identification technology |
| CN104362697A (en) * | 2014-11-10 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Electric-vehicle charging board adopting IC (intelligent card) identification technology |
| CN104393637A (en) * | 2014-11-10 | 2015-03-04 | 安徽省新方尊铸造科技有限公司 | Electric bicycle charging plug board through fingerprint identification technology |
| CN104538995A (en) * | 2014-11-10 | 2015-04-22 | 安徽省新方尊铸造科技有限公司 | Electric bicycle charging socket adopting electronic coded lock technology |
| CN104578247A (en) * | 2014-11-10 | 2015-04-29 | 安徽省新方尊铸造科技有限公司 | Electric vehicle charging plug board adopting face recognition system |
| CN111969999A (en) * | 2020-06-28 | 2020-11-20 | 上海宇航系统工程研究所 | Reliable carrier rocket separation signal isolation detection and self-locking circuit |
| CN111969999B (en) * | 2020-06-28 | 2023-08-11 | 上海宇航系统工程研究所 | Reliable carrier rocket separation signal isolation detection and self-locking circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103457600B (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103457600A (en) | Switching circuit with self-locking and isolating functions and lamp | |
| CN206775459U (en) | The cutoff device and photovoltaic module turning off system of a kind of photovoltaic module | |
| CN108832893A (en) | Photovoltaic module cutoff device, shutdown control method and intelligent assembly | |
| CN204993289U (en) | Igbt drive circuit | |
| CN105119233A (en) | Protection circuit | |
| CN103368550A (en) | Light-operated switch manufactured through voltage comparator | |
| CN103346553B (en) | Anti-reverse and the anti-relay coil short-circuit control circuit of a kind of electronic controller | |
| CN201918970U (en) | Impulse modulator based on separation transmission technology of front and back edges of impulse | |
| CN105656464A (en) | Off-delay type relay output circuit | |
| CN104635569B (en) | A kind of multimode sequential control circuit | |
| CN101924459B (en) | Switching signal interface circuit based on double photoelectric isolation | |
| CN204517389U (en) | Discharge circuit | |
| CN105336540B (en) | shunt protection circuit for protecting relay contact | |
| CN202372620U (en) | Detection circuit of circuit breaker | |
| CN206481243U (en) | A kind of switch reluctance machine drive silicon controlled control circuit | |
| CN102694541B (en) | Loop latching circuit | |
| CN204361890U (en) | Intermediate frequency power supply thyristor Fiber isolation drive circuit | |
| CN109587423A (en) | Back-light starting circuit | |
| CN204156834U (en) | A kind of anti-interference reset circuit based on isolation design | |
| CN111541440B (en) | Switching value input circuit suitable for nonpolar multi-level voltage input | |
| CN104104374B (en) | A kind of RS485 Anti-jamming Communication system based on flow measurement device | |
| CN203399078U (en) | Light-operated switch manufactured through voltage comparator | |
| CN202586326U (en) | Switching value acquisition circuit | |
| CN104467381A (en) | Thyristor optical fiber isolation drive circuit of medium-frequency power supply | |
| CN201509264U (en) | LNB power supply circuit with short-circuit protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20200530 |