CN201114957Y - Classroom lighting power energy saving controller - Google Patents
Classroom lighting power energy saving controller Download PDFInfo
- Publication number
- CN201114957Y CN201114957Y CNU2007200873817U CN200720087381U CN201114957Y CN 201114957 Y CN201114957 Y CN 201114957Y CN U2007200873817 U CNU2007200873817 U CN U2007200873817U CN 200720087381 U CN200720087381 U CN 200720087381U CN 201114957 Y CN201114957 Y CN 201114957Y
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- CN
- China
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- triode
- resistance
- power
- power supply
- classroom
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- 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.)
- Expired - Fee Related
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a classroom lighting power saving controller, which has the structures that: the negative end of a photodiode D1 is connected with the cathode of the power, and the positive end thereof is connected with the power anode by resistors R1, R2 sequentially; the single input end of a time-base circuit is connected with the extraction partial voltage of an adjustable resistor R1, and the signal output end is connected with the base of the triode V1 by a resistor R3; the collector of the triode V1 is connected with the base of the triode V2 by a resistor R4; the emitter of the triodes V2, V1 are respectively connected to the cathode and the anode of the power correspondingly; one end of a resistor R5 is connected with the power anode by a switch N1, a switch N2 and a relay coil sequentially, and the other end thereof is connected with the collector of the triode V2; the contact of the relay is connected with a switch N1 in a parallel way; the positive end of a light emitting diode D2 is connected with the collector of the triode V2 by a resistor R6, and the negative end thereof is connected with the anode of a 12V power. The classroom lighting power saving controller can cause the lighting lamps in classroom to turn off automatically when the day ray reaches a certain illuminance, and allows the lighting lamps to turn on only when the illuminance in the classroom reduces to a certain extent, thus avoiding the long lighting lamps at the daytime.
Description
Technical field
The utility model relates to a kind of battery saving arrangement, is specially a kind of classroom illumination electricity-saving controller.
Background technology
Present condition is school preferably, and lamplight brightness in the classroom and natural lighting effect are all good.But because people's economy consciousness is thinner, under the situation that natural daylight is very strong, " altar lamp " in the classroom still is found everywhere by day, and this is a kind of great waste.
Summary of the invention
The purpose of this utility model is to provide a kind of classroom illumination electricity-saving controller, and this electricity-saving controller is closed illuminating lamp when light reaches certain illumination by day automatically.
The classroom illumination electricity-saving controller that the utility model provides is characterized in that:
The positive pole of the negative sense termination 12V power supply of photodiode, the forward end of photodiode connects the negative pole of 12V power supply successively by adjustable resistance, first resistance;
The signal input part of drawing component voltage access time-base circuit of adjustable resistance, the corresponding respectively positive and negative electrode of receiving the 12V power supply of the power end of time-base circuit and earth terminal, the signal output part of time-base circuit connects the base stage of first triode by second resistance;
The collector electrode of first triode connects the base stage of second triode by the 3rd resistance, the corresponding respectively positive and negative electrode of receiving the 12V power supply of the emitter-base bandgap grading of the emitter-base bandgap grading of second triode and first triode;
One end of the 4th resistance connects the negative pole of 12V power supply successively by first switch, second switch and relay coil, the collector electrode of another termination second triode of the 4th resistance, and relay contact is connected with first switch in parallel;
The forward end of light-emitting diode connects the collector electrode of second triode, the negative pole of the negative sense termination 12V power supply of light-emitting diode by the 5th resistance.
The classroom illumination electricity-saving controller of the utility model design, when light reached certain illumination by day, the illuminating lamp in the classroom was closed automatically; Just allow trip the lights when having only indoor illumination to drop to a certain degree, avoided " altar lamp " on daytime.
Description of drawings
Fig. 1 is the circuit structure diagram of the utility model classroom illumination electricity-saving controller.
Embodiment
Below in conjunction with Fig. 1 operation principle of the present utility model and process are described.
The 12V power supply is added on the branch road that is made of photodiode D1 and adjustable resistance R1, first resistance R 2, and the component voltage of drawing from adjustable resistance R1 inserts the signal input part a of time-base circuit IC1 (NE555).The corresponding respectively positive and negative electrode of receiving the 12V power supply of the power end d of time-base circuit IC1 and earth terminal b, the signal output part c of time-base circuit IC1 connects the base stage of the first triode V1 by second resistance R 3.
When ambient light when dying down by force, the internal resistance of photodiode D1 is changed from small to big.The voltage of basic at that time IC circuit 1 signal input part a is during less than 1/3VCC (VCC is the operating voltage of time-base circuit IC1), its output state counter-rotating, signal output part c exports high level, the first triode V1, the second triode V2 saturation conduction, late-class circuit gets, light-emitting diode D2 is luminous, and indication allows trip the lights; When the moment of pressing the first switch N1, relay K A-1 gets electric, and normally opened contact KA-2 closure makes relay coil KA-1 self-sustaining, and its main contact is connected lighting lamp power loop; In the time of need turning off the light, press normally closed second switch N2, relay electric-loss, its contact KA-2 disconnects, and cuts off the lighting lamp power supply.
When ambient light changes from weak to strong, the internal resistance of photodiode D1 from large to small, when making the signal input part a voltage of time-base circuit IC1 be raised to 2/3VCC, the signal output part c output low level of time-base circuit IC1, triode V1, V2 end, late-class circuit dead electricity, relay electric-loss, its contact disconnects, and closes the illuminating lamp in the classroom automatically.
When illuminance in the classroom does not need trip the lights just, adjust resistance R 1 in the circuit from bottom to top, make relay just dead electricity, photodiode D2 extinguish, and fix the position of this adjustable resistance R1.
Claims (1)
1, a kind of classroom illumination electricity-saving controller is characterized in that:
The positive pole of the negative sense termination 12V power supply of photodiode (D1), the forward end of photodiode (D1) connect the negative pole of 12V power supply successively by adjustable resistance (R1), first resistance (R2);
The signal input part (a) of drawing component voltage access time-base circuit (IC1) of adjustable resistance (R1), the corresponding respectively positive and negative electrode of receiving the 12V power supply of the power end (d) of time-base circuit (IC1) and earth terminal (b), the signal output part (c) of time-base circuit (IC1) connects the base stage of first triode (V1) by second resistance (R3);
The collector electrode of first triode (V1) connects the base stage of second triode (V2) by the 3rd resistance (R4), the corresponding respectively positive and negative electrode of receiving the 12V power supply of the emitter-base bandgap grading of the emitter-base bandgap grading of second triode (V2) and first triode (V1);
One end of the 4th resistance (R5) connects the negative pole of 12V power supply successively by first switch (N1), second switch (N2) and relay coil (KA-1), the collector electrode of another termination second triode (V2) of the 4th resistance (R5), relay contact (KA-2) is connected in parallel with first switch (N1);
The forward end of light-emitting diode (D2) connects the collector electrode of second triode (V2), the negative pole of the negative sense termination 12V power supply of light-emitting diode (D2) by the 5th resistance (R6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200873817U CN201114957Y (en) | 2007-09-29 | 2007-09-29 | Classroom lighting power energy saving controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200873817U CN201114957Y (en) | 2007-09-29 | 2007-09-29 | Classroom lighting power energy saving controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114957Y true CN201114957Y (en) | 2008-09-10 |
Family
ID=39966707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200873817U Expired - Fee Related CN201114957Y (en) | 2007-09-29 | 2007-09-29 | Classroom lighting power energy saving controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114957Y (en) |
-
2007
- 2007-09-29 CN CNU2007200873817U patent/CN201114957Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |