CN212851098U - Intelligent street lamp illumination energy-saving control circuit - Google Patents
Intelligent street lamp illumination energy-saving control circuit Download PDFInfo
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- CN212851098U CN212851098U CN202021857467.5U CN202021857467U CN212851098U CN 212851098 U CN212851098 U CN 212851098U CN 202021857467 U CN202021857467 U CN 202021857467U CN 212851098 U CN212851098 U CN 212851098U
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Abstract
The utility model provides a wisdom street lamp illumination energy-saving control circuit, including step-down rectifier circuit, voltage stabilizing circuit, photosensitive circuit, switch and relay K. The alternating current input is connected with the input end of the voltage stabilizing circuit through the voltage reducing and rectifying circuit, the output end of the voltage stabilizing circuit is connected with the relay K through the switch, and the normally open contact K1 of the relay K is connected between the alternating current input and the street lamp LG. The output end of the voltage stabilizing circuit is also connected with the control end of the switch through a photosensitive circuit, the photosensitive circuit is used for controlling the switch to be switched on when the ambient light intensity is smaller than the starting light intensity threshold value, and controlling the switch to be switched off when the ambient light intensity is larger than the closing light intensity threshold value. The utility model discloses can in time provide the illumination for the pedestrian when ambient light intensity is more weak, close the street lamp when ambient light intensity is stronger, play energy-conserving effect.
Description
Technical Field
The utility model relates to a street lamp lighting technology field especially relates to a wisdom street lamp illumination energy-saving control circuit.
Background
Generally, street lights on a road are usually lit at a fixed time in the evening of each day and off at a fixed time in the morning. Due to the influence of seasons, weather, it may occur: the natural light intensity before the street lamp is started is weaker, the natural light intensity after the street lamp is started is still stronger, the natural light intensity before the street lamp is closed is stronger, and the natural light intensity after the street lamp is closed is still weaker, wherein the traditional street lamp control circuit cannot timely provide illumination for pedestrians under the two conditions that the natural light intensity before the street lamp is started is weaker and the natural light intensity after the street lamp is closed is still weaker; for the two conditions that the natural light intensity after the street lamp is turned on is still strong and the natural light intensity before the street lamp is turned off is strong, the traditional street lamp control circuit can cause electric energy waste.
SUMMERY OF THE UTILITY MODEL
In view of this the utility model provides an wisdom street lamp illumination energy-saving control circuit to solve traditional street lamp control circuit and can't in time provide the illumination and cause the extravagant problem of electric energy for the pedestrian.
The technical scheme of the utility model is realized like this: an intelligent street lamp lighting energy-saving control circuit comprises a voltage reduction rectifying circuit, a voltage stabilizing circuit, a photosensitive circuit, a switch and a relay;
the alternating current input is connected with the input end of the voltage stabilizing circuit through the voltage reducing and rectifying circuit, the output end of the voltage stabilizing circuit is connected with the relay through the switch, and the normally open contact of the relay is connected between the alternating current input and the street lamp;
the output end of the voltage stabilizing circuit is also connected with the control end of the switch through the photosensitive circuit, and the photosensitive circuit is used for controlling the switch to be switched on when the ambient light intensity is smaller than the starting light intensity threshold value and controlling the switch to be switched off when the ambient light intensity is larger than the closing light intensity threshold value.
Optionally, the voltage stabilizing circuit includes a three-terminal voltage stabilizing chip LM 7812.
Optionally, the voltage stabilizing circuit further includes capacitors C1-C2, an input end of the chip LM7812 is grounded through the capacitor C1, and an output end of the chip LM7812 is grounded through the capacitor C2.
Optionally, the voltage stabilizing circuit further includes a resistor R1 and a light emitting diode D1, and the output end of the chip LM7812 is further grounded through the resistor R1 and the light emitting diode D1 connected in series in sequence.
Optionally, the switch includes a transistor Q2, and the photosensitive circuit includes a resistor R2, a photosensitive resistor R3, and a transistor Q1;
the output end of the voltage stabilizing circuit is grounded through a resistor R2 and a photoresistor R3 which are connected in series in sequence, the common end of the resistor R2 and the photoresistor R3 is connected with the base electrode of a triode Q1, the output end of the voltage stabilizing circuit is grounded through a relay and a triode Q2 in sequence, and the common end of the relay and the triode Q2 is connected with the base electrode of the triode Q2 through a triode Q1.
Optionally, the photosensitive circuit further comprises a diode D2, and a diode D2 is connected in anti-parallel to two ends of the relay.
Optionally, the photosensitive circuit further includes a resistor R4 and a capacitor C3, the resistor R4 is connected between the common terminal of the resistor R2 and the photosensitive resistor R3 and the base of the transistor Q1, and the common terminal of the resistor R4 and the base of the transistor Q1 is grounded through the capacitor C3.
Optionally, the photosensitive circuit further includes a resistor R5 and a capacitor C4, the resistor R5 is connected between the emitter of the transistor Q1 and the base of the transistor Q2, and a common terminal of the resistor R5 and the base of the transistor Q2 is grounded through the capacitor C4.
Optionally, the resistor R5 is a variable resistor.
The utility model discloses a wisdom street lamp illumination energy-saving control circuit has following beneficial effect for prior art:
(1) the photosensitive circuit of the utility model can control the switch to be switched on when the ambient light intensity is less than the threshold value of the starting light intensity, and control the street lamp LG to be switched in the alternating current input to start to provide illumination, thus timely providing illumination for the pedestrians when the ambient light intensity is weaker; the photosensitive circuit can also control the switch to be switched off when the ambient light intensity is greater than the light intensity threshold value, the alternating current power supply of the street lamp LG is cut off, and the street lamp LG is switched off, so that the street lamp can be switched off when the ambient light intensity is strong, and the energy-saving effect is achieved;
(2) the utility model discloses set up the two-stage light absorption return circuit in the twinkling of an eye that resistance and electric capacity are constituteed, can absorb the interference that unexpected light such as thunder and lightning caused the circuit, avoid street lamp LG to open because external thunder and lightning and artificial light in the twinkling of an eye are opened by mistake.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of the intelligent street lamp lighting energy-saving control circuit of the present invention;
fig. 2 is a circuit diagram of the intelligent street lamp lighting energy-saving control circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1, the intelligent street lamp lighting energy-saving control circuit of the present embodiment includes a voltage-reducing rectification circuit, a voltage-stabilizing circuit, a photosensitive circuit, a switch and a relay K. The alternating current input is connected with the input end of the voltage stabilizing circuit through the voltage reducing and rectifying circuit, the output end of the voltage stabilizing circuit is connected with the relay K through the switch, and the normally open contact K1 of the relay K is connected between the alternating current input and the street lamp LG. The output end of the voltage stabilizing circuit is also connected with the control end of the switch through a photosensitive circuit, the photosensitive circuit is used for controlling the switch to be switched on when the ambient light intensity is smaller than the starting light intensity threshold value, and controlling the switch to be switched off when the ambient light intensity is larger than the closing light intensity threshold value. The voltage reduction rectification circuit comprises a voltage reduction transformer T1 and a rectifier DB, and is used for converting 220V alternating current input into low-voltage direct current output; the voltage stabilizing circuit is used for stabilizing the direct current output of the voltage reducing and rectifying circuit so as to supply power to the photosensitive circuit and the relay K. The method comprises the steps of starting an environment light intensity node with a light intensity threshold value being a preset value and needing to illuminate a road, and stopping the environment light intensity node with the light intensity threshold value being a preset value and needing not to illuminate the road.
Specifically, as shown in fig. 2, the switch of the present embodiment includes a transistor Q2, and the photosensitive circuit includes a resistor R2, a photosensitive resistor R3, and a transistor Q1. The output end of the voltage stabilizing circuit is grounded through a resistor R2 and a photoresistor R3 which are connected in series in sequence, the common end of the resistor R2 and the photoresistor R3 is connected with the base electrode of a triode Q1, the output end of the voltage stabilizing circuit is grounded through a relay K and a triode Q2 in sequence, and the common end of the relay K and the triode Q2 is connected with the base electrode of the triode Q2 through a triode Q1.
In this embodiment, if the ambient light intensity is less than the threshold of the turn-on light intensity, the resistance of the photo resistor R3 is large, the voltage divided by the photo resistor R3 is higher than the threshold voltage of the transistor Q1, the transistor Q1 is turned on, the transistor Q2 is controlled to be turned on, the coil of the relay K is powered on, the normally open contact K1 is closed, and the street lamp LG is connected to the ac input to start to provide illumination. Therefore, the pedestrian can be timely illuminated when the ambient light intensity is weak. If the ambient light intensity is greater than the light intensity threshold value, the resistance value of the photosensitive resistor R3 is small, the voltage obtained by dividing the photosensitive resistor R3 is lower than the threshold voltage of the triode Q1, the triode Q1 is turned off, so that the bias voltage of the base of the triode Q2 is cut off, the triode Q2 is turned off, the coil of the relay K is disconnected with the circuit, the normally open contact K1 is disconnected, the alternating current power supply of the street lamp LG is cut off, and the street lamp LG is closed. Therefore, the street lamp can be turned off when the ambient light intensity is strong, and the energy-saving effect is achieved.
As shown in fig. 2, the preferred photosensitive circuit of this embodiment further includes a diode D2, and a diode D2 is connected in anti-parallel to two ends of the relay. Diode D2 can be used as the discharge circuit when the coil of relay K is changed from on to off, preventing high voltage from damaging the circuit.
As shown in fig. 2, the photosensitive circuit of this embodiment preferably further includes a resistor R4 and a capacitor C3, the resistor R4 is connected between the common terminal of the resistor R2 and the photosensitive resistor R3 and the base of the transistor Q1, and the common terminal of the resistor R4 and the base of the transistor Q1 is grounded via the capacitor C3. In consideration of the fact that in actual application, the photosensitive circuit is affected by external lightning and artificial instantaneous light, in order to solve the problem, the instant light absorption loop formed by the resistor R4 and the capacitor C3 is arranged in the circuit, so that the interference of accidental light such as lightning on the circuit can be absorbed, and the street lamp LG is prevented from being turned on by mistake due to the external lightning and the artificial instantaneous light.
As shown in fig. 2, the photosensitive circuit of this embodiment preferably further includes a resistor R5 and a capacitor C4, the resistor R5 is connected between the emitter of the transistor Q1 and the base of the transistor Q2, and the common terminal of the resistor R5 and the base of the transistor Q2 is grounded via the capacitor C4. The secondary instant light absorption loop formed by the resistor R5 and the capacitor C4 can carry out secondary absorption on accidental light such as thunder and lightning and the like so as to thoroughly eliminate the influence of the accidental light, and can solve the problem of frequent jumping of the relay K at the light control critical point. Further, the resistor R5 is preferably a variable resistor for adjusting the charge/discharge time constant of the capacitor C4.
As shown in fig. 2, the voltage regulator circuit of this embodiment includes a three-terminal voltage regulator chip LM7812 for performing voltage regulation and power supply to the light sensitive circuit. Preferably, the voltage stabilizing circuit further comprises capacitors C1-C2, the input end of the chip LM7812 is grounded through the capacitor C1, and the output end of the chip LM7812 is grounded through the capacitor C2. The capacitor C1 is the input filter capacitor of three-terminal regulator chip LM7812, and the capacitor C2 is the output filter capacitor of three-terminal regulator chip LM7812 for improve LM7812 output voltage's stability.
As shown in fig. 2, the voltage regulator circuit of this embodiment preferably further includes a resistor R1 and a light emitting diode D1, and the output terminal of the chip LM7812 is further grounded via the resistor R1 and the light emitting diode D1 connected in series in sequence. The light emitting diode D1 and the resistor R1 form a signal indicating circuit, and the light emitting diode D1 emits light to indicate that the voltage stabilizing circuit power supply works normally.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An intelligent street lamp lighting energy-saving control circuit is characterized by comprising a voltage reduction rectification circuit, a voltage stabilizing circuit, a photosensitive circuit, a switch and a relay;
the alternating current input is connected with the input end of the voltage stabilizing circuit through the voltage reducing and rectifying circuit, the output end of the voltage stabilizing circuit is connected with the relay through the switch, and the normally open contact of the relay is connected between the alternating current input and the street lamp;
the output end of the voltage stabilizing circuit is also connected with the control end of the switch through the photosensitive circuit, and the photosensitive circuit is used for controlling the switch to be switched on when the ambient light intensity is smaller than the starting light intensity threshold value and controlling the switch to be switched off when the ambient light intensity is larger than the closing light intensity threshold value.
2. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 1, wherein the voltage regulator circuit comprises a three-terminal voltage regulator chip LM 7812.
3. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 2, wherein the voltage regulator circuit further comprises capacitors C1-C2, the input terminal of the chip LM7812 is grounded through the capacitor C1, and the output terminal of the chip LM7812 is grounded through the capacitor C2.
4. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 2, wherein the voltage regulator circuit further comprises a resistor R1 and a light emitting diode D1, and the output terminal of the chip LM7812 is further grounded via the resistor R1 and the light emitting diode D1 connected in series.
5. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 1, wherein the switch comprises a transistor Q2, the photosensitive circuit comprises a resistor R2, a photosensitive resistor R3 and a transistor Q1;
the output end of the voltage stabilizing circuit is grounded through a resistor R2 and a photoresistor R3 which are connected in series in sequence, the common end of the resistor R2 and the photoresistor R3 is connected with the base electrode of a triode Q1, the output end of the voltage stabilizing circuit is grounded through a relay and a triode Q2 in sequence, and the common end of the relay and the triode Q2 is connected with the base electrode of the triode Q2 through a triode Q1.
6. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 5, wherein the light-sensitive circuit further comprises a diode D2, and a diode D2 is connected in anti-parallel with two ends of the relay.
7. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 5, wherein the photosensitive circuit further comprises a resistor R4 and a capacitor C3, the resistor R4 is connected between the common terminal of the resistor R2 and the photosensitive resistor R3 and the base of the transistor Q1, and the common terminal of the resistor R4 and the base of the transistor Q1 is grounded via the capacitor C3.
8. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 7, wherein the photosensitive circuit further comprises a resistor R5 and a capacitor C4, the resistor R5 is connected between the emitter of the transistor Q1 and the base of the transistor Q2, and the common terminal of the resistor R5 and the base of the transistor Q2 is grounded via the capacitor C4.
9. The intelligent street lamp lighting energy-saving control circuit as claimed in claim 8, wherein the resistor R5 is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021857467.5U CN212851098U (en) | 2020-08-31 | 2020-08-31 | Intelligent street lamp illumination energy-saving control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021857467.5U CN212851098U (en) | 2020-08-31 | 2020-08-31 | Intelligent street lamp illumination energy-saving control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212851098U true CN212851098U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021857467.5U Active CN212851098U (en) | 2020-08-31 | 2020-08-31 | Intelligent street lamp illumination energy-saving control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN212851098U (en) |
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2020
- 2020-08-31 CN CN202021857467.5U patent/CN212851098U/en active Active
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