Light-operated street lamp lighting circuit
The light-controlled street light lighting circuit adjusts the street lights to turn on or off in real time, which solves the problem that traditional control methods cannot be based on weather changes, and achieves safety and energy-saving effects.
Patent Information
- Application Number
- CN202421528827.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Traditional time-controlled and AC contactor control street lights cannot be adjusted to be turned on or off according to different weather conditions in the same season, which affects the normal performance of street light functions and leads to safety hazards and waste of electricity.
A light-controlled street lamp lighting circuit is designed, including light detection and voltage division circuit, time-based integrated circuit, street lamp control circuit and street lamp AC contactor. The light intensity is detected through light detection and voltage division circuit, and the time-based integrated circuit is used to trigger high and low levels, and the working state of the street lamp AC contactor is controlled to realize the real-time opening or closing of street lamps.
It has realized the adjustment of the working status of street lights according to actual weather conditions, ensure road safety, save power resources, and the photoresistor has strong performance and low cost, further saving economic costs.
Smart Images
Figure CN222928551U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of street lamp control, in particular to a light-controlled street lamp lighting circuit. Background Art
[0002] The problem of lighting power saving is another major power saving project besides power saving for power. For the public lighting street lamps on urban roads, the traditional control method is to use time control plus AC contactors to control the opening and closing of street lamps, and then adjust the time control time according to seasons for seasonal time difference conversion.
[0003] However, the time control for the opening and closing of street lamps is only limited to specific times, and it is impossible to control the opening or closing of street lamps according to different weather conditions (sunny, cloudy, rainy) in the same season. This not only affects the normal function of street lamps, poses a threat to road safety, but also causes waste of electricity. Summary of the Utility Model
[0004] The utility model provides a light-controlled street lamp lighting circuit to solve the problem that when using the traditional method of time control plus AC contactors to control street lamps, it is impossible to control the opening or closing of street lamps according to different weather conditions (sunny, cloudy, rainy) in the same season, which not only affects the normal function of street lamps, poses a threat to road safety, but also causes waste of electricity.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is to provide a light-controlled street lamp lighting circuit, which includes a light detection and voltage division circuit, a time base integrated circuit, a street lamp control circuit, and a street lamp AC contactor that are electrically connected in sequence; the light detection and voltage division circuit is used to detect the light intensity, the time base integrated circuit is used to trigger a high level or a low level, the street lamp control circuit is used to control the working state of the street lamp AC contactor, and the street lamp AC contactor is used to control the opening or closing of the street lamp.
[0006] In some embodiments, a power conversion circuit is further included. The power conversion circuit is electrically connected to the light detection and voltage division circuit, the time base integrated circuit, and the street lamp AC contactor respectively, and the power conversion circuit is used to convert an AC power supply into a DC power supply.
[0007] In some embodiments, the power conversion circuit includes a step-down resistor, a step-down capacitor, a rectifier diode, a filter capacitor, and a voltage stabilizing diode; the step-down resistor and the step-down capacitor are connected in parallel. One end of the step-down resistor is connected to the AC power supply, and the other end is electrically connected to the positive electrode of the rectifier diode. The negative electrode of the voltage stabilizing diode is electrically connected to the electrical connection point between the step-down resistor and the rectifier diode. The negative electrode of the rectifier diode is electrically connected to the positive electrode of the filter capacitor, and the negative electrode of the filter capacitor is electrically connected to the positive electrode of the voltage stabilizing diode.
[0008] In some embodiments, the light detection and voltage division circuit includes a photosensitive resistor, a variable resistor, a first voltage division resistor, and a second voltage division resistor; one end of the photosensitive resistor is electrically connected to the power conversion circuit, and the other end is electrically connected to the first voltage division resistor. The first voltage division resistor is also electrically connected to the variable resistor. The time base integrated circuit is electrically connected to the electrical connection point between the first voltage division resistor and the variable resistor. The variable resistor is also electrically connected to one end of the second voltage division resistor, and the other end of the second voltage division resistor is grounded.
[0009] In some embodiments, the time base integrated circuit includes an integrated chip NE555. The power supply terminal and the enable terminal of the integrated chip NE555 are respectively electrically connected to the power conversion circuit. The first threshold terminal and the second threshold terminal of the integrated chip NE555 are respectively electrically connected to the light detection and voltage division circuit. The output terminal of the integrated chip NE555 is electrically connected to the street lamp control circuit.
[0010] In some embodiments, the street lamp control circuit includes a thyristor output optocoupler. The second terminal of the thyristor output optocoupler is electrically connected to the time base integrated circuit. The sixth terminal and the eighth terminal of the thyristor output optocoupler are respectively electrically connected to the street lamp AC contactor.
[0011] The beneficial effects of the present utility model are as follows: The present utility model discloses a light-controlled street lamp lighting circuit, which includes a light detection and voltage division circuit, a time base integrated circuit, a street lamp control circuit, and a street lamp AC contactor that are electrically connected in sequence. The light detection and voltage division circuit is used to detect the light intensity. The time base integrated circuit is used to trigger a high level or a low level. The street lamp control circuit is used to control the working state of the street lamp AC contactor. The street lamp AC contactor is used to control the turning on or off of the street lamp. The present utility model detects the light intensity of natural light through the light detection and voltage division circuit, and uses the strength of the light to control the turning on or off of the street lamp in real time through the street lamp control circuit, so that the street lamp can adjust its working state according to the actual weather conditions, maximize its function, ensure the safety of the road, save electric power resources at the same time, and achieve the purpose of energy conservation and consumption reduction. Moreover, the photosensitive resistor used in the light detection and voltage division circuit of the present utility model not only has powerful performance but also low cost, further saving the economic cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a principle block diagram of a light-controlled street lamp lighting circuit of the present utility model;
[0013] Figure 2 is a schematic diagram of the light detection and voltage division circuit and the time base integrated circuit in a light-controlled street lamp lighting circuit of the present utility model;
[0014] Figure 3It is a schematic diagram of the street lamp control circuit in a light-controlled street lamp lighting circuit of the present utility model;
[0015] Figure 4 It is a schematic diagram of the power conversion circuit in a light-controlled street lamp lighting circuit of the present utility model. Detailed implementation manners
[0016] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the drawings and specific embodiments. The preferred embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.
[0017] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.
[0018] As Figure 1 shown, the light-controlled street lamp lighting circuit of the present utility model includes a light detection and voltage division circuit 1, a time base integrated circuit 2, a street lamp control circuit 3, and a street lamp AC contactor 4 that are electrically connected in sequence, and further includes a power conversion circuit 5 that is electrically connected to the light detection and voltage division circuit 1, the time base integrated circuit 2, and the street lamp AC contactor 4 respectively.
[0019] The light detection and voltage division circuit 1 is used to detect the light intensity, the time base integrated circuit 2 is used to trigger a high level or a low level, the street lamp control circuit 3 is used to control the working state of the street lamp AC contactor, the street lamp AC contactor 4 is used to control the turning on or off of the street lamp, and the power conversion circuit 5 is used to convert the AC power supply into a DC power supply.
[0020] The present utility model detects the light intensity of natural light through the light detection and voltage division circuit 1, and uses the strength of the light to control the turning on or off of the street lamp in real time through the street lamp control circuit 3, so that the street lamp can adjust its working state according to the actual weather conditions, maximize its function, ensure the safety of the road, and at the same time save power resources, achieving the purpose of energy conservation and consumption reduction; moreover, the photoresistor used in the light detection and voltage division circuit 1 of the present utility model not only has powerful performance but also low cost, further saving the economic cost.
[0021] Furthermore, in combination with Figure 1 、 Figure 2As shown, in this embodiment, the light detection and voltage division circuit 1 includes a photosensitive resistor J1, a variable resistor RP1, a first voltage division resistor R3, and a second voltage division resistor R5.
[0022] Specifically, one end of the photosensitive resistor J1 is electrically connected to the power conversion circuit 5 to access the DC power supply output by the power conversion circuit 5, and the other end of the photosensitive resistor J1 is electrically connected to the first voltage division resistor R3; the first voltage division resistor R3 is also electrically connected to the variable resistor RP1, and the first threshold terminal THOLD and the second threshold terminal TRIG of the integrated chip U1 in Figure 2 are respectively electrically connected to the electrical connection point between the first voltage division resistor R3 and the variable resistor RP1; the variable resistor RP1 is also electrically connected to one end of the second voltage division resistor R5, and the other end of the second voltage division resistor R5 is grounded.
[0023] In this embodiment, the model of the photosensitive resistor J1 is 5528. The photosensitive resistor J1 of 5528 not only has powerful performance and good light perception effect, but also has low cost and the characteristics of being inexpensive and good-quality.
[0024] Furthermore, in combination with Figure 1 、 Figure 2 As shown, in this embodiment, the time-base integrated circuit includes an integrated chip U1, and the model of the integrated chip U1 is NE555.
[0025] Specifically, the power supply terminal VCC and the enable terminal RESET of the integrated chip U1 are respectively electrically connected to the power conversion circuit 5 to access the DC power supply output by the power conversion circuit 5; the first threshold terminal THOLD and the second threshold terminal TRIG of the integrated chip U1 are respectively electrically connected to Figure 2 the electrical connection point between the first voltage division resistor R3 and the variable resistor RP1 in the light detection and voltage division circuit 1; the output terminal OUT of the integrated chip U1 is electrically connected to Figure 3 the second terminal 2 of the thyristor output optocoupler U2 in
[0026] Furthermore, in combination with Figure 1 、 Figure 3 As shown, in this embodiment, the street lamp control circuit includes a thyristor output optocoupler U2, and the model of the thyristor output optocoupler U2 is AQH2223.
[0027] Specifically, the second terminal 2 of the thyristor output optocoupler U2 is connected to Figure 3is electrically connected to the output terminal OUT of the integrated chip U1. A resistor R4 and a light-emitting diode D2 are connected in series at the electrical connection point between the second terminal 2 of the thyristor output optocoupler U2 and the output terminal OUT of the integrated chip U1 and then grounded; the sixth terminal 6 and the eighth terminal 8 of the thyristor output optocoupler U2 are respectively connected to Figure 1 the street lamp AC contactor 4 in the middle path. A resistor R2 and a capacitor C3 are also connected in series between the sixth terminal 6 and the eighth terminal 8 of the thyristor output optocoupler U2.
[0028] Furthermore, as shown in Figure 1 and Figure 4 , in this embodiment, the power conversion circuit 5 includes a step-down resistor R1, a step-down capacitor C1, a rectifying diode D1, a filtering capacitor C2, and a voltage-regulating diode DZ1; the power conversion circuit 5 is used to convert the AC power supply into a DC power supply. In this embodiment, the AC power supply is 220V and the DC power supply is 12V.
[0029] Specifically, the step-down resistor R1 and the step-down capacitor C1 are connected in parallel. One end of the step-down resistor R1 is connected to the AC power supply, and the other end is electrically connected to the positive electrode of the rectifying diode D1. The negative electrode of the voltage-regulating diode DZ1 is electrically connected at the electrical connection point between the step-down resistor R1 and the rectifying diode D1. The negative electrode of the rectifying diode D1 is electrically connected to the positive electrode of the filtering capacitor C2. The negative electrode of the filtering capacitor C2 is electrically connected to the positive electrode of the voltage-regulating diode DZ1, and the negative electrode of the filtering capacitor C2 is also grounded; the negative electrode of the rectifying diode D1 is also respectively Figure 2 connected to one end of the photoresistor J1 in Figure 1 , the power supply terminal VCC and the enable terminal RESET of the integrated chip U1; the negative electrode of the filtering capacitor C2 is also electrically connected to a resistor R6 and then connected to
[0030] the street lamp AC contactor 4 in Figure 1 . When the power conversion circuit 5 is working, it adopts the method of resistance-capacitance step-down. The 220V AC power supply is stepped down by the step-down resistor R1 and the step-down capacitor C1, then rectified by the rectifying diode D1, filtered by the filtering capacitor C2, and finally regulated by the voltage-regulating diode DZ1 to obtain a 12V DC power supply, which supplies power to
[0031] the light detection and voltage division circuit 1, the time base integrated circuit 2, and the street lamp AC contactor 4 in Figures 1 to 4 In summary, as shown in Figure 2The voltage value at point B in [it] changes, and the voltages at the first threshold terminal THOLD and the second threshold terminal TRIG of the integrated chip U1 start to drop; when the voltages at the first threshold terminal THOLD and the second threshold terminal TRIG drop to 1 / 3 VCC, the flip-flop inside the integrated chip U1 flips, causing the output terminal OUT of the integrated chip U1 to change from low level to high level; therefore, the thyristor output optocoupler U2 gets powered on and starts to work, controlling the contact of the street lamp AC contactor 4 connected to it to close and get powered on. The street lamp AC contactor 4 further controls the street lamp to turn on and illuminate the road surface. When the sky gradually brightens, the light intensity of natural light gradually increases. At this time, the resistance value of the photoresistor J1 gradually decreases; after voltage division by the voltage divider, Figure 2 the voltage value at point B in [it] changes, and the voltages at the first threshold terminal THOLD and the second threshold terminal TRIG of the integrated chip U1 start to rise; when the voltages at the first threshold terminal THOLD and the second threshold terminal TRIG rise to 2 / 3 VCC, the flip-flop inside the integrated chip U1 flips, causing the output terminal OUT of the integrated chip U1 to change from high level to low level; therefore, the thyristor output optocoupler U2 loses power, and the contact of the street lamp AC contactor 4 connected to it disconnects, and the street lamp turns off and stops illuminating the road surface.
[0032] Thus, the present utility model discloses a light-controlled street lamp lighting circuit, including a light detection and voltage division circuit, a time-base integrated circuit, a street lamp control circuit, and a street lamp AC contactor that are electrically connected in sequence; the light detection and voltage division circuit is used to detect the light intensity, the time-base integrated circuit is used to trigger high level or low level, the street lamp control circuit is used to control the working state of the street lamp AC contactor, and the street lamp AC contactor is used to control the turning on or off of the street lamp. The present utility model detects the light intensity of natural light through the light detection and voltage division circuit, and uses the strength of the light to control the turning on or off of the street lamp in real time through the street lamp control circuit, enabling the street lamp to adjust its working state according to the actual weather conditions, maximizing its function, ensuring the safety of the road, saving power resources at the same time, and achieving the purpose of energy conservation and consumption reduction; moreover, the photoresistor used in the light detection and voltage division circuit of the present utility model not only has powerful performance but also low cost, further saving the economic cost.
[0033] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.
Claims
1. A light-controlled street lamp lighting circuit, characterized in that: It includes a light detection and voltage division circuit, a timing integrated circuit, a street light control circuit and a street light AC contactor which are electrically connected in sequence; the light detection and voltage division circuit is used to detect the light intensity, the timing integrated circuit is used to trigger a high level or a low level, the street light control circuit is used to control the working state of the street light AC contactor, and the street light AC contactor is used to control the turning on or off of the street light.
2. The light-controlled street lamp lighting circuit according to claim 1, characterized in that: It also includes a power conversion circuit, which is electrically connected to the light detection and voltage division circuit, the time base integrated circuit and the street lamp AC contactor respectively, and is used to convert AC power into DC power.
3. The light-controlled street lamp lighting circuit according to claim 2, characterized in that: The power conversion circuit includes a step-down resistor, a step-down capacitor, a rectifier diode, a filter capacitor and a zener diode; the step-down resistor and the step-down capacitor are arranged in parallel, one end of the step-down resistor is connected to the AC power supply, and the other end is electrically connected to the positive electrode of the rectifier diode, the negative electrode of the zener diode is electrically connected at the electrical connection between the step-down resistor and the rectifier diode, the negative electrode of the rectifier diode is electrically connected to the positive electrode of the filter capacitor, and the negative electrode of the filter capacitor is electrically connected to the positive electrode of the zener diode.
4. The light-controlled street lamp lighting circuit according to claim 2, characterized in that: The light detection and voltage-dividing circuit includes a photoresistor, an adjustable resistor, a first voltage-dividing resistor and a second voltage-dividing resistor; one end of the photoresistor is electrically connected to the power conversion circuit, and the other end is electrically connected to the first voltage-dividing resistor, the first voltage-dividing resistor is also electrically connected to the adjustable resistor, the timing integrated circuit is electrically connected at the electrical connection between the first voltage-dividing resistor and the adjustable resistor, the adjustable resistor is also electrically connected to one end of the second voltage-dividing resistor, and the other end of the second voltage-dividing resistor is grounded.
5. The light-controlled street lamp lighting circuit according to claim 2, characterized in that: The timing integrated circuit includes an integrated chip NE555, a power supply end and an enable end of the integrated chip NE555 are electrically connected to the power conversion circuit respectively, a first threshold end and a second threshold end of the integrated chip NE555 are electrically connected to the light detection and voltage divider circuit respectively, and an output end of the integrated chip NE555 is electrically connected to the street light control circuit.
6. The light-controlled street lamp lighting circuit according to any one of claims 1 to 5, characterized in that: The street lamp control circuit comprises a thyristor output photoelectric coupler, a second end of the thyristor output photoelectric coupler is electrically connected to the time base integrated circuit, and a sixth end and an eighth end of the thyristor output photoelectric coupler are electrically connected to the street lamp AC contactor respectively.