Outdoor street lamp illumination control circuit
By designing outdoor street light lighting control circuits and updating battery charging and LED light lighting and dimming functions in old street light systems, the high cost and resource waste problems of replacing the entire street light system in the existing technology are solved, and low-cost and short-term maintenance and effective resource utilization are achieved.
Patent Information
- Application Number
- CN202421714418.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-18
AI Technical Summary
When existing outdoor street light systems are disrepaired, they usually need to replace the entire system, which leads to high costs, long time-consuming, and inability to effectively utilize the complete functional circuit, resulting in waste of resources.
An outdoor street light lighting control circuit was designed. Through the combination of the main control chip N1 with the power supply circuit, battery charging circuit and LED lighting control circuit, the battery charging and LED lighting control circuit are updated to reduce maintenance costs and time, and avoid wasting complete functions.
It realizes low-cost and short-term maintenance of old street light systems, avoids waste of resources, and ensures the stability and efficiency of battery charging and LED light control.
Smart Images
Figure CN222981691U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to street lamp lighting, in particular to an outdoor street lamp lighting control circuit. Background Art
[0002] Outdoor street lamp lighting is an important technology at present, which is related to the safety of walking at night.
[0003] At present, photovoltaic panels and batteries are used to supply power to outdoor street lamps. Some street lamps are in disrepair for a long time. Generally, the solution of replacing the entire street lamp system is adopted at present. However, this solution has a very high cost and takes a long time. Moreover, some parts of this system are working normally and some parts need to be updated. Through research and repair, it is found that in the damaged street lamp system, the battery charging function and the lighting brightness adjustment function are damaged more. Therefore, if all are replaced, the intact functional circuits will be wasted, resulting in waste. Summary of the Utility Model
[0004] To solve the defects of the above-mentioned prior art, the utility model provides an outdoor street lamp lighting control circuit. The utility model aims at the original old street lamp system, updates the battery charging and the brightness function of the LED lamp therein, has a low cost, short maintenance time, and will not waste the intact functions in the past.
[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: an outdoor street lamp lighting control circuit includes a main control chip N1. The 1st pin of the main control chip N1 is connected to a power supply circuit to provide 2.8V voltage for the main control chip N1. The 6th pin of the main control chip N1 is connected to a battery charging circuit. The 4th pin of the main control chip N1 is connected to an LED lighting control circuit;
[0006] The LED lighting control circuit includes a resistor R2, a MOS transistor, and a plurality of current-limiting resistors. The plurality of current-limiting resistors are connected in parallel to form a parallel resistor group. One end of the resistor R2 is connected to the 4th pin of the main control chip N1, and the other end is connected to the gate of the MOS transistor. The source of the MOS transistor is connected to the negative pole of the battery. The drain of the MOS transistor is connected to one end of the parallel resistor group, and the other end of the parallel resistor group is connected to the negative pole of the LED lamp board.
[0007] The power supply circuit includes a voltage regulator U1, a diode D1, a diode D2, a capacitor C1, a capacitor Cw3, a capacitor C3, and a capacitor Cw1. The diode D1 and the diode D2 are connected in parallel. The positive electrode of the diode D1 is connected to the positive electrode of the battery, and the positive electrode of the diode D2 is connected to the positive electrode of the photovoltaic panel. The negative electrodes of the diode D1 and the diode D2 are connected to one end of the capacitor C1, one end of the capacitor Cw3, pins 2 and 4 of the voltage regulator U1. The other end of the capacitor C1 is grounded, the other end of the capacitor Cw3 is grounded, pin 1 of the voltage regulator U1 is grounded, and pin 3 of the voltage regulator U1 is connected to one end of the capacitor C3, one end of the capacitor Cw1, and outputs a +2.8V voltage. The other end of the capacitor C3 is grounded, and the other end of the capacitor Cw1 is grounded.
[0008] The model of the voltage regulator U1 is LP3993 / SOT-89.
[0009] The battery charging circuit includes a resistor R1, a triode V1, a resistor R6, a MOS transistor QP2, a resistor R7, and a MOS transistor QP1. One end of the resistor R1 is connected to pin 6 of the main control chip N1, and the other end is connected to the base of the triode V1. The emitter of the triode V1 is grounded, and the collector of the triode V1 is connected to the resistor R6. The other end of the resistor R6 is connected to the gate of the MOS transistor QP2, the resistor R7, and the gate of the MOS transistor QP1. The drain of the MOS transistor QP2 is connected to the positive electrode of the battery to charge the battery. The source of the MOS transistor QP2 is connected to the other end of the resistor R7 and the source of the MOS transistor QP1. The drain of the MOS transistor QP1 is connected to the positive electrode of the photovoltaic panel.
[0010] The multiple current-limiting resistors include a resistor RLa1, a resistor RLa2, a resistor RLa3, a resistor RLa4, a resistor RL1, a resistor RL2, a resistor RLa5, a resistor RLa6, a resistor RLa7, a resistor RLa8, a resistor RLa9, and a resistor RLa10.
[0011] The model of the main control chip N1 is NY8B062FS8.
[0012] In summary, the present utility model has achieved the following technical effects:
[0013] The photovoltaic pin and the battery pin of the power supply circuit of the present utility model are connected to the photovoltaic and the battery of the original street lamp system. After the voltage regulator U1 stabilizes the power supply voltage to 2.8V, it replaces the power supply voltage scheme of the original street lamp system to ensure voltage stability.
[0014] The photovoltaic pin of the battery charging circuit of the present utility model is connected to the original photovoltaic, and the battery pin is connected to the original battery. The MOS transistor QP2 and the MOS transistor QP1 are used to update the original charging scheme, and the charging control is more stable.
[0015] The utility model uses a current-limiting resistor and an MOS transistor to replace the original brightness control scheme, and the control is more concise and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the control chip N1 provided by an embodiment of the utility model;
[0017] Figure 2 It is a schematic diagram of the power supply circuit;
[0018] Figure 3 It is a schematic diagram of the battery charging circuit;
[0019] Figure 4 It is a schematic diagram of the LED lighting control circuit. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following further describes the utility model in detail with reference to the drawings.
[0021] This specific embodiment is only an explanation of the utility model, and it does not limit the utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the utility model, they are protected by the Patent Law.
[0022] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.
[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the utility model, "a plurality" means two or more, unless otherwise specifically defined.
[0024] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0025] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0026] Embodiment:
[0027] An outdoor street lamp lighting control circuit includes a main control chip N1. The 1st pin of the main control chip N1 is connected to a power supply circuit to provide a 2.8V voltage for the main control chip N1. The 6th pin of the main control chip N1 is connected to a battery charging circuit. The 4th pin of the main control chip N1 is connected to an LED lighting control circuit.
[0028] Among them, the power supply circuit provides a 2.8V voltage for the main control chip N1. The main control chip N1 outputs a PWM signal to charge the battery through the battery charging circuit. The main control chip N1 outputs a PWM signal to control the brightness of the LED lamp board lighting through the LED lighting control circuit.
[0029] Figure 1 It is a schematic diagram of the main control chip N1. The model of the main control chip N1 is NY8B062FS8. The 1st pin of the main control chip N1 is connected to the power supply circuit to achieve 2.8V power supply.
[0030] Figure 2It is a schematic diagram of the power supply circuit, including a voltage regulator U1, a diode D1, a diode D2, a capacitor C1, a capacitor Cw3, a capacitor C3, and a capacitor Cw1. The diode D1 and the diode D2 are connected in parallel. The positive pole of the diode D1 is connected to the positive pole of the battery, and the positive pole of the diode D2 is connected to the positive pole of the photovoltaic panel. The negative poles of the diode D1 and the diode D2 are connected to one end of the capacitor C1, one end of the capacitor Cw3, pins 2 and 4 of the voltage regulator U1. The other end of the capacitor C1 is grounded, the other end of the capacitor Cw3 is grounded, pin 1 of the voltage regulator U1 is grounded, and pin 3 of the voltage regulator U1 is connected to one end of the capacitor C3, one end of the capacitor Cw1, and outputs a +2.8V voltage. The other end of the capacitor C3 is grounded, and the other end of the capacitor Cw1 is grounded.
[0031] The model of the voltage regulator U1 is LP3993 / SOT-89.
[0032] The battery and the photovoltaic panel are connected through the diodes D1 and D2 to prevent the voltages of the battery and the photovoltaic panel from being connected, supply power to U1, and thus generate a 2.8V voltage to supply power to devices such as the single-chip microcomputer N1 and the infrared receiving tube.
[0033] The photovoltaic terminal and the battery terminal of the power supply circuit are connected to the photovoltaic and battery of the original street lamp system. After the voltage is stabilized at 2.8V through the voltage regulator U1, it replaces the power supply voltage scheme of the original street lamp system to ensure voltage stability.
[0034] Figure 3 It is a battery charging circuit, including a resistor R1, a triode V1, a resistor R6, a MOS transistor QP2, a resistor R7, and a MOS transistor QP1. One end of the resistor R1 is connected to pin 6 of the main control chip N1, and the other end is connected to the base of the triode V1. The emitter of the triode V1 is grounded, the collector of the triode V1 is connected to the resistor R6, and the other end of the resistor R6 is connected to the gate of the MOS transistor QP2, the resistor R7, and the gate of the MOS transistor QP1. The drain of the MOS transistor QP2 is connected to the positive pole of the battery to charge the battery. The source of the MOS transistor QP2 is connected to the other end of the resistor R7 and the source of the MOS transistor QP1. The drain of the MOS transistor QP1 is connected to the positive pole of the photovoltaic panel.
[0035] Pin 6 of the single-chip microcomputer N1 outputs PWM to modulate the duty cycle, controls the driving of the triode V1 through the current-limiting resistor R1. QP1 and QP2 are used as switches. The drain of the MOS transistor QP1 is connected to the positive pole of the photovoltaic panel, and the photovoltaic panel charges the battery through the drain of the MOS transistor QP2. The charging control terminal of the photovoltaic panel for the battery performs PWM control with a frequency of 1kHz. The high level is the charging-on state, and the low level is the charging-off state.
[0036] The photovoltaic pin of the battery charging circuit of the present utility model is connected to the original photovoltaic, and the battery pin is connected to the original battery. The original charging scheme is updated by using MOS transistor QP2 and MOS transistor QP1, and the charging control is more stable.
[0037] Figure 4 It is a schematic diagram of an LED lighting control circuit, including resistor R2, MOS transistors, and multiple current-limiting resistors. The multiple current-limiting resistors are connected in parallel to form a parallel resistor group. One end of the resistor R2 is connected to pin 4 of the main control chip N1, and the other end is connected to the gate of the MOS transistor. The source of the MOS transistor is connected to the negative pole of the battery, and the drain of the MOS transistor is connected to one end of the parallel resistor group. The other end of the parallel resistor group is connected to the negative pole of the LED light board.
[0038] The multiple current-limiting resistors include resistor RLa1, resistor RLa2, resistor RLa3, resistor RLa4, resistor RL1, resistor RL2, resistor RLa5, resistor RLa6, resistor RLa7, resistor RLa8, resistor RLa9, and resistor RLa10. These resistors are connected in parallel as a current resistor group, which can limit the maximum brightness of the LED.
[0039] There are multiple MOS transistors, which are connected in parallel and serve as the switch for discharging. They are added or reduced according to different requirements for the discharge current and power.
[0040] The PWM output by pin 4 of the single-chip microcomputer N1 drives the switches of MOS transistors QN1 and QNa1 through the current-limiting resistor R2, and the duty cycle is adjusted to control the brightness of the LED.
[0041] Pin 4 of the main control chip N1 controls and drives the gate of the MOS transistor. The high level is the on state. When powered on, the LED is default off. The LED needs to enter the daytime and then be lower than the turn-on point before it will turn on normally. That is, after the voltage of the photovoltaic panel is greater than the turn-off point (2.4V) for 3 seconds and then lower than the turn-on point (1.6V) for 3 seconds, the LED will work.
[0042] The present utility model uses current-limiting resistors and MOS transistors to replace the original brightness control scheme, and the control is more concise and convenient.
[0043] The above is only a preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model are all within the scope of the technical solution of the present utility model.
Claims
1. An outdoor street lamp lighting control circuit, characterized in that: it includes a main control chip N1, pin 1 of the main control chip N1 is connected to a power supply circuit to provide a 2.8V voltage for the main control chip N1, pin 6 of the main control chip N1 is connected to a battery charging circuit, and pin 4 of the main control chip N1 is connected to an LED lighting control circuit; the LED lighting control circuit includes a resistor R2, a MOS transistor, and a plurality of current-limiting resistors. The plurality of current-limiting resistors are connected in parallel to form a parallel resistor group. One end of the resistor R2 is connected to pin 4 of the main control chip N1, and the other end is connected to the gate of the MOS transistor. The source of the MOS transistor is connected to the negative pole of the battery, the drain of the MOS transistor is connected to one end of the parallel resistor group, and the other end of the parallel resistor group is connected to the negative pole of the LED lamp board.
2. An outdoor street lamp lighting control circuit according to claim 1, characterized in that: the power supply circuit includes a voltage regulator U1, a diode D1, a diode D2, a capacitor C1, a capacitor Cw3, a capacitor C3, and a capacitor Cw1. The diode D1 and the diode D2 are connected in parallel. The positive pole of the diode D1 is connected to the positive pole of the battery, the positive pole of the diode D2 is connected to the positive pole of the photovoltaic panel. The negative poles of the diode D1 and the diode D2 are connected to one end of the capacitor C1, one end of the capacitor Cw3, pins 2 and 4 of the voltage regulator U1. The other end of the capacitor C1 is grounded, the other end of the capacitor Cw3 is grounded, pin 1 of the voltage regulator U1 is grounded, pin 3 of the voltage regulator U1 is connected to one end of the capacitor C3, one end of the capacitor Cw1, and outputs a +2.8V voltage. The other end of the capacitor C3 is grounded, and the other end of the capacitor Cw1 is grounded.
3. An outdoor street lamp lighting control circuit according to claim 2, characterized in that: the model of the voltage regulator U1 is LP3993 / SOT-89.
4. An outdoor street lamp lighting control circuit according to claim 1, characterized in that: the battery charging circuit includes a resistor R1, a triode V1, a resistor R6, a MOS transistor QP2, a resistor R7, and a MOS transistor QP1. One end of the resistor R1 is connected to pin 6 of the main control chip N1, and the other end is connected to the base of the triode V1. The emitter of the triode V1 is grounded, the collector of the triode V1 is connected to the resistor R6, the other end of the resistor R6 is connected to the gate of the MOS transistor QP2, the resistor R7, and the gate of the MOS transistor QP1. The drain of the MOS transistor QP2 is connected to the positive pole of the battery to charge the battery. The source of the MOS transistor QP2 is connected to the other end of the resistor R7 and the source of the MOS transistor QP1. The drain of the MOS transistor QP1 is connected to the positive pole of the photovoltaic panel.
5. An outdoor street lamp lighting control circuit according to claim 1, characterized in that: The multiple current-limiting resistors include resistor RLa1, resistor RLa2, resistor RLa3, resistor RLa4, resistor RL1, resistor RL2, resistor RLa5, resistor RLa6, resistor RLa7, resistor RLa8, resistor RLa9, and resistor RLa10.
6. An outdoor street lamp lighting control circuit according to claim 1, characterized in that: the main control chip N1 is of model NY8B062FS8.