CN102438372B - Intelligent lamp circuit - Google Patents

Abstract

The invention aims to provide an intelligent lamp circuit which switches the working states of different lamp groups in the circuit in sequence by detecting the voltage change of a power supply input end. The intelligent lamp circuit comprises a processing unit, a detection circuit, a plurality of control circuits and a plurality of groups of lamp circuits, and is characterized in that: the detection circuit is connected to the output end of the rectification circuit in parallel, and the output end of the detection circuit is electrically connected with the input end of the processing unit; the processing unit is provided with a plurality of output ends which are respectively butted with the control circuits, and the processing unit selectively outputs effective levels at the output ends according to the voltage change fed back by the detection circuit within a certain time; and the control circuit enables the corresponding lamp circuit to meet working conditions according to the effective level signal output by the processing unit.

Description

A smart light circuit

[Technical field]

The invention relates to an intelligent lamp circuit.

[technical background]

In daily life, people often hope to be able to choose the required lighting conditions according to different occasions. For example, in occasions that require high lighting conditions, energy-saving lamps can achieve better lighting effects, while in occasions that require low lighting conditions, using low-power LED lamps can not only meet their lighting needs, but also save electricity. .

[Content of the invention]

The object of the present invention is to propose a smart lamp circuit, including a power input terminal and a rectifier circuit connected in parallel to the power input terminal, characterized in that: comprising a power input terminal and a rectifier circuit connected in parallel to the power input terminal, characterized in that: The smart lamp circuit is also provided with a detection circuit, a processing unit, several control circuits and corresponding groups of lamp circuits.

The detection circuit is connected in parallel to the output end of the rectification circuit, and the output end of the detection circuit is electrically connected to the input end of the processing unit;

The processing unit is provided with a number of output terminals respectively connected to the control circuits, and the processing unit selectively outputs effective levels at each output terminal according to the voltage change fed back by the detection circuit within a certain period of time.

According to the effective level signal output by the processing unit, the control circuit makes the lamp circuit corresponding to it satisfy the working condition.

The further technical scheme of the intelligent lamp circuit of the present invention:

The detection circuit is a voltage-dividing circuit, including two voltage-dividing resistors connected in series, and the connection point of the voltage-dividing resistors is used as the circuit output.

The lamp circuit includes an LED lamp circuit and an energy-saving lamp circuit. The LED lamp circuit includes several LED lamps and current limiting resistors connected in series in sequence. The energy-saving lamp circuit includes a driving power supply, an oscillation module and an energy-saving lamp. The vibrating module includes several vibrating coils and vibrating capacitors, and the vibrating coils are coupled with one core.

One of the control circuits of the smart lamp circuit includes a switching transistor Q1, the base of the switching transistor Q1 is electrically connected to the output end of the processing unit, and its collector and emitter are connected in series with the LED lamp circuit to form a circuit. When the output terminal of the processing unit is at low level, the switching transistor Q1 is turned off, thereby disconnecting the LED lamp circuit; when the output terminal of the processing unit is at high level, the switching transistor Q1 is turned on, and the LED lamp circuit is started.

One of the control circuits of the smart light circuit includes a switching transistor Q2 and an electromagnetic relay, the base of the transistor Q2 is electrically connected to the output terminal of the processing unit, and its collector, emitter and electromagnetic relay are connected in series to form a loop; the switch end of the electromagnetic relay is connected in series with the energy-saving lamp circuit. When the output terminal of the processing unit is at low level, the switching transistor Q2 is cut off, so that the switch terminal of the electromagnetic relay is disconnected, and the energy-saving lamp circuit is disconnected; when the output terminal of the processing unit is at high level, the switching transistor Q2 is turned on, and the electromagnetic The switch end of the relay is closed, and the energy-saving lamp circuit is started.

As an improvement of the above solution, one of the control circuits of the smart lamp circuit includes a field effect transistor Q3, a field effect transistor Q4 and an oscillating transformer coil TD, the gate of the field effect transistor Q3 is connected to the processing unit The output terminal is electrically connected, its source is connected to the DC power input, and its drain is grounded; the gate of the field effect transistor Q4 is connected to the source of the field effect transistor Q3, and its drain is grounded; the oscillating transformer coil TD is connected to The source and drain of the FET Q4, the oscillating transformer coil TD is one of the oscillating components of the energy-saving lamp circuit, and is co-core coupled with the other oscillating coils. When the output terminal of the processing unit is at a low level, the field effect transistor Q3 is cut off, the field effect transistor Q4 is turned on, the oscillation transformer coil TD is short-circuited, and the start-up condition of the energy-saving lamp circuit is not satisfied; when the processing unit When the output terminal is at a high level, the field effect transistor Q3 is turned on, and the field effect transistor Q4 is turned off, the oscillating transformer coil works normally, the energy-saving lamp circuit meets the vibration starting conditions, and the energy-saving lamp starts.

As a further improvement of the above solution, a PFC module is provided in parallel between the drive circuit of the energy-saving lamp and the input terminal of the DC power supply.

The power input end is also provided with an overvoltage protection module, and the overvoltage protection module includes a piezoresistor and a filter capacitor, both of which are connected to the power input end in parallel.

A fuse is connected in series with the L line of the power input end, and when the circuit current is too large, the fuse is blown to disconnect the power supply to protect the safety of the circuit.

The smart light circuit of the present invention has the following advantages:

The sequential switching of multiple groups of lamp circuits can be easily realized, so that users can choose different lamp circuits to meet different lighting brightness requirements; at the same time, choosing low-energy lamp circuits in occasions with low lighting requirements can effectively save power.

[Description of drawings]

Fig. 1 is a block diagram of the basic circuit structure of the present invention.

FIG. 2 is a schematic diagram of a circuit structure of the present invention.

FIG. 3 is a second schematic diagram of the circuit structure of the present invention.

FIG. 4 is a schematic diagram of the third circuit structure of the present invention.

[Detailed ways]

The present invention will be further described below in conjunction with each accompanying drawing.

As shown in Figure 1, it is a block diagram of the circuit structure of the present invention:

A smart lamp circuit, comprising a power input terminal and a rectifier circuit 8 connected in parallel to the power input terminal, the smart lamp circuit is also provided with a detection circuit 1, a processing unit 2, a first control circuit 31, a second control circuit 32, an LED Lamp circuit 4 and energy-saving lamp circuit 5;

As shown in Figure 2, one embodiment of the present invention:

The detection circuit 1 is a voltage-dividing circuit, including two voltage-dividing resistors connected in series, and the connection point of the voltage-dividing resistors is used as the circuit output, which is connected to the input terminal of the processing unit. According to the detection design requirements of the processing unit, the detection circuit can be modified accordingly.

The first output end of the processing unit 2 is electrically connected to the first control circuit 31, the second output end is electrically connected to the second control circuit 32, and the processing unit 2 detects the voltage fed back by the circuit within a certain period of time. Changing the first and second output terminals to selectively output active levels, thereby controlling the working state of its slave circuits.

The first control circuit 31 is connected to the LED lamp circuit, and the second control circuit 32 is connected to the energy-saving lamp circuit.

The first control circuit 31 mainly includes a switching transistor Q1, the base of the switching transistor Q1 is electrically connected to the first output terminal of the processing unit, and its collector and emitter are connected in series with the LED lamp circuit 4 form a loop. When the first output pin of the processing unit is at an active level, the switch transistor Q1 is turned on, and the LED light circuit works normally; when the first output pin of the processing unit is at an inactive level, the switch transistor Q1 is turned off, and the LED light circuit Lamp circuit disconnected.

The second control circuit 32 mainly includes a switching transistor Q2 and an electromagnetic relay, the base of the transistor Q2 is electrically connected to the second output terminal of the processing unit, and its collector, emitter and electromagnetic relay are connected in series to form a loop, the switch end of the electromagnetic relay is connected in series with the energy-saving lamp circuit. When the second output end of the processing unit is at an active level, the electromagnetic relay is closed, and the energy-saving lamp circuit works normally; when the second output end of the processing unit is at an inactive level, the electromagnetic relay is closed, and the energy-saving lamp circuit is not activated. Work.

The LED lamp circuit 4 includes several LED lamps and current limiting resistors connected in series.

The energy-saving lamp circuit 5 includes a driving power supply 52, an oscillation module and an energy-saving lamp 53. The oscillation module includes several oscillation coils and oscillation capacitors, and the oscillation coils are coupled with one core.

The power input end is also provided with an overvoltage protection module 6, and the overvoltage protection module 6 includes a piezoresistor and a filter capacitor, both of which are connected to the power input end in parallel.

As shown in Figure 3, it is the second embodiment of the present invention:

As another embodiment of the present utility model, its circuit is different from the first embodiment in that: the second control circuit 32 mainly includes a field effect transistor Q3, a field effect transistor Q4 and an oscillating transformer coil TD. The gate of the effect transistor Q3 is electrically connected to the second output terminal of the processing unit, its source is connected to the DC power input, and the drain is grounded; the gate of the field effect transistor Q4 is connected to the source of the field effect transistor Q3 , its drain is grounded; the oscillating transformer coil TD is connected to the source and drain of the field effect transistor Q4, and the oscillating transformer coil TD is one of the starting components of the energy-saving lamp circuit, and has the same core as the other starting coils coupling.

As shown in Figure 4, it is the third embodiment of the present invention:

As the third embodiment of the present invention, in addition to the circuit of the second embodiment above, a PFC module 51 is provided in parallel between the drive circuit of the energy-saving lamp and the input terminal of the rectifier circuit.

The above schemes only provide preferred implementation modes of the present invention, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. Anything that is similar to the circuit structure of the present invention, or some technical deduction or replacement is made on the premise of the concept of the present invention, should be regarded as the protection scope of the present invention.

Claims (8)

1. A smart light circuit, comprising a power input terminal and a rectifier circuit connected in parallel to the power input terminal, characterized in that: the smart light circuit is also provided with a detection circuit, a processing unit, several control circuits and corresponding groups Light circuit; the detection circuit is connected to the output end of the rectification circuit in parallel, and the output end of the detection circuit is electrically connected to the input end of the processing unit; the processing unit is provided with several output terminals respectively connected to each control circuit At the end, the processing unit selectively outputs the active level at each output end according to the voltage change fed back by the detection circuit within a certain period of time; the control circuit makes the corresponding lamp circuit meet the working conditions according to the active level signal output by the processing unit ; The detection circuit is a voltage-dividing circuit, including two voltage-dividing resistors connected in series, and the connection point of the voltage-dividing resistors is used as the circuit output; The lamp circuit includes an LED lamp circuit and an energy-saving lamp circuit; The LED lamp circuit includes several LED lamps and current-limiting resistors connected in series; The energy-saving lamp circuit includes a driving power supply, an oscillation module, and an energy-saving lamp; wherein, the oscillation module includes several oscillation coils and oscillation capacitors, and the oscillation coils are coupled with the same core; One of the control circuits includes a switching transistor Q1, the base of the switching transistor Q1 is electrically connected to the output end of the processing unit, and its collector and emitter are connected in series with the LED lamp circuit to form a loop; The second of the control circuit includes a switch transistor Q2 and an electromagnetic relay, the base of the transistor Q2 is electrically connected to the output terminal of the processing unit, and its collector, emitter and electromagnetic relay are connected in series to form a loop; The switch end of the electromagnetic relay is connected in series with the energy-saving lamp circuit. 2 . The smart lamp circuit according to claim 1 , wherein a PFC module is connected in parallel between the drive circuit of the energy-saving lamp and the output terminal of the DC power supply. 3 . 3. A smart light circuit according to claim 2, characterized in that: said power supply input end is also provided with an overvoltage protection module, said overvoltage protection module includes a piezoresistor and a filter capacitor, both connected in parallel to the power input. 4. The smart lamp circuit according to claim 3, wherein a fuse is connected in series with the L line of the power input end. 5. A smart light circuit, including a power input terminal and a rectifier circuit connected in parallel to the power input terminal, characterized in that: the smart light circuit is also equipped with a detection circuit, a processing unit, a number of control circuits and a number of groups corresponding to it Light circuit; the detection circuit is connected to the output end of the rectification circuit in parallel, and the output end of the detection circuit is electrically connected to the input end of the processing unit; the processing unit is provided with several output terminals respectively connected to each control circuit At the end, the processing unit selectively outputs the active level at each output end according to the voltage change fed back by the detection circuit within a certain period of time; the control circuit makes the corresponding lamp circuit meet the working conditions according to the active level signal output by the processing unit ; The detection circuit is a voltage-dividing circuit, including two voltage-dividing resistors connected in series, and the connection point of the voltage-dividing resistors is used as the circuit output; The lamp circuit includes an LED lamp circuit and an energy-saving lamp circuit; The LED lamp circuit includes several LED lamps and current-limiting resistors connected in series; The energy-saving lamp circuit includes a driving power supply, an oscillation module, and an energy-saving lamp; wherein, the oscillation module includes several oscillation coils and oscillation capacitors, and the oscillation coils are coupled with the same core; One of the control circuits includes a switching transistor Q1, the base of the switching transistor Q1 is electrically connected to the output end of the processing unit, and its collector and emitter are connected in series with the LED lamp circuit to form a loop; The second control circuit includes a field effect transistor Q3, a field effect transistor Q4, and an oscillating transformer coil TD. The gate of the field effect transistor Q3 is electrically connected to the output terminal of the processing unit, and its source is connected to the DC power input , the drain is grounded; the gate of the field effect transistor Q4 is connected to the source of the field effect transistor Q3, and its drain is grounded; the oscillating transformer coil TD is connected to the source and drain of the field effect transistor Q4, so The oscillating transformer coil TD is one of the oscillating components of the energy-saving lamp circuit, and is co-core coupled with the other oscillating coils. 6 . The smart lamp circuit according to claim 5 , wherein a PFC module is connected in parallel between the drive circuit of the energy-saving lamp and the output terminal of the DC power supply. 7. A smart lamp circuit according to claim 6, characterized in that: said power supply input end is also provided with an overvoltage protection module, said overvoltage protection module includes a piezoresistor and a filter capacitor, both connected in parallel to the power input. 8 . The smart light circuit according to claim 7 , wherein a fuse is connected in series with the L line of the power input end.

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