Intelligent road lighting energy-saving control circuit

Abstract

The application discloses a kind of wisdom road lighting energy-saving control circuit, it is related to lighting energy-saving control technical field, including micro control module, according to the voltage size of photoelectric conversion, control photovoltaic control module carries out photoelectric conversion, power regulation, isolation voltage transformation and electric energy superposition, during illumination, energy storage control module cooperates photovoltaic control module power supply and carries out constant current voltage stabilizing drive to first lighting module and second lighting module, when the electric energy of energy storage control module is lower than second low voltage threshold, cooperate auxiliary regulation module separately power supply for second lighting module, mains module cooperates photovoltaic control module and is powered for first lighting module, when the electric energy of energy storage control module is lower than power shortage threshold, mains module cooperates photovoltaic control module and carries out constant current voltage stabilizing drive to first lighting module and second lighting module.The application wisdom road lighting energy-saving control circuit can improve voltage gain, improve energy-saving effect, improve electric energy utilization rate and carry out electric energy distribution reasonably and efficiently.

Description

Technical Field

[0001] This invention relates to the field of lighting energy-saving control technology, specifically a smart road lighting energy-saving control circuit. Background Technology

[0002] Currently, in the process of urbanization, streetlights, as part of urban infrastructure, consume a huge amount of energy. Existing technologies for street lighting generally employ a hybrid power supply method combining mains power and energy storage devices to achieve energy-saving control. During the lighting operation, the energy storage device supplies power to the streetlights, and when the energy storage device's power is low, it switches back to mains power. Additionally, photovoltaic power provides energy to the energy storage device. However, when the photovoltaic power supply is low, it cannot continue to supply power, resulting in low photovoltaic energy utilization and low energy-saving efficiency of the circuit. Furthermore, when using a hybrid power supply of mains power and energy storage devices, it is impossible to control the driving state of the streetlights based on the energy status of the energy storage device, leading to low energy utilization of the energy storage device. Therefore, improvements are needed. Summary of the Invention

[0003] This invention provides a smart road lighting energy-saving control circuit to solve the problems mentioned in the background art.

[0004] According to an embodiment of the present invention, a smart road lighting energy-saving control circuit is provided, comprising: a mains power module, a photovoltaic control module, an energy storage control module, a microcontroller module, a power regulation module, an auxiliary regulation module, a first lighting module, and a second lighting module;

[0005] The mains power module, connected to the microcontroller module and the power regulation module, is used to step down and rectify the mains power and output the first electrical energy. When it receives the first power supply signal output by the microcontroller module, it transmits the first electrical energy to the power regulation module.

[0006] The photovoltaic control module, connected to the microcontroller module, is used for photoelectric conversion. When it receives the first adjustment signal output by the microcontroller module, it adjusts the power of the converted electrical energy and outputs the second electrical energy. When it receives the first compensation signal output by the microcontroller module, it performs isolation transformation processing on the converted electrical energy and superimposes it with the second electrical energy to output the third electrical energy.

[0007] The energy storage control module is connected to the microcontroller module, the power regulation module, and the auxiliary regulation module. It is used to store second electrical energy when it receives the first energy storage signal output by the microcontroller module, store third electrical energy when it receives the second energy storage signal output by the microcontroller module, provide fourth electrical energy, and transmit the fourth electrical energy to the power regulation module when it receives the first discharge signal output by the microcontroller module, and transmit the fourth electrical energy to the auxiliary regulation module when it receives the second discharge signal output by the microcontroller module.

[0008] The microcontroller module is used to output a first adjustment signal during photoelectric conversion, output a first energy storage signal when the converted electrical energy is greater than a set first low voltage threshold, output a first compensation signal and a second energy storage signal when the converted electrical energy is lower than the first low voltage threshold, output a second adjustment signal and a drive signal when lighting is required, output a first discharge signal when the stored electrical energy is higher than the second low voltage threshold, output a first power supply signal, a second discharge signal and a third adjustment signal when the stored electrical energy is lower than the second low voltage threshold, and stop controlling the energy storage module when the stored electrical energy is lower than the undervoltage threshold.

[0009] The power regulation module is connected to the microcontroller module, the photovoltaic control module and the energy storage control module. It is used to regulate the power of the first or fourth electrical energy when a second regulation signal is received, and to superimpose the regulated electrical energy with the third electrical energy to output the fifth electrical energy.

[0010] An auxiliary regulation module, connected to the energy storage control module and the microcontroller module, is used to regulate the power of the fourth electrical energy and output the sixth electrical energy when the third regulation signal is received.

[0011] The first lighting module, connected to the power regulation module, is used to receive the fifth electrical energy and perform lighting work;

[0012] The second lighting module is connected to the microcontroller module, the power regulation module, the first lighting module, and the auxiliary regulation module. It is used to connect in series with the first lighting module and perform constant current and voltage regulated lighting operation with the first lighting module when a drive signal is received. When a third regulation signal is received, it receives sixth electrical energy and performs lighting operation independently.

[0013] As a further embodiment of the present invention: the mains power module includes a mains power interface, a power exchange device, and an eleventh power transistor; the microcontroller module includes a first controller;

[0014] Preferably, the first and second terminals of the mains power interface are connected to the first and second terminals of the power exchange device, respectively. The third terminal of the power exchange device is connected to the drain of the eleventh power transistor. The source of the first power transistor is connected to the power regulation module. The fourth terminal of the power conversion device is grounded. The gate of the eleventh power transistor is connected to the IO6 terminal of the first controller.

[0015] As a further embodiment of the present invention: the power regulation module includes a third inductor, a first diode, a third capacitor, a fourth inductor, and a second power transistor;

[0016] Preferably, the first end of the third inductor is connected to the source of the eleventh power transistor and the energy storage control module, the second end of the third inductor is connected to the anode of the first diode and the drain of the second power transistor, the cathode of the first diode is connected to the first end of the third capacitor and the first end of the fourth inductor, the second end of the fourth power transistor is connected to the first lighting module and the second lighting module, the second end of the third capacitor is connected to the photovoltaic control module, the source of the second power transistor is connected to the fourth end of the power conversion device, and the gate of the second power transistor is connected to the IO2 end of the first controller.

[0017] As a further embodiment of the present invention: the photovoltaic control module includes a photovoltaic power supply, a first inductor, a first transformer, a second inductor, a first thyristor, a third diode, a first power transistor, a second diode, a second capacitor, and a first capacitor;

[0018] Preferably, the first end of the photovoltaic power supply is connected to the first end of the primary side of the first transformer and is connected to one end of the first thyristor and one end of the second inductor through the first inductor. The other end of the first thyristor is connected to the second end of the primary side of the first transformer. The second end of the second inductor is connected to the anode of the third diode and the drain of the first power transistor. The cathode of the third diode is connected to one end of the second capacitor and the first end of the secondary side of the first transformer and is connected to the source of the first power transistor, the second end of the photovoltaic power supply, and the fourth end of the power conversion device through the first capacitor. The second end of the secondary side of the first transformer is connected to the anode of the second diode. The cathode of the second diode is connected to the other end of the second capacitor and the second end of the third capacitor. The gate of the first power transistor and the control terminal of the first thyristor are respectively connected to the IO1 and IO7 terminals of the first controller.

[0019] As a further embodiment of the present invention: the first lighting module includes a fourth diode, a fourth capacitor, and a first LED group;

[0020] Preferably, the anode of the fourth diode is connected to the second terminal of the fourth inductor, the cathode of the fourth diode is connected to the first terminal of the first LED group, and the second lighting module and the second terminal of the first LED group are connected through the fourth capacitor.

[0021] As a further embodiment of the present invention: the second lighting module includes a fourth power transistor, a fifth power transistor, a fifth diode, a third power transistor, a fifth capacitor, and a second LED group;

[0022] Preferably, the drain of the fourth power transistor is connected to the anode of the fourth diode, the source of the fourth power transistor is connected to the second terminal of the first LED group, the drain of the fifth power transistor, the anode of the fifth diode, and the drain of the third power transistor, the cathode of the fifth diode is connected to the first terminal of the second LED group and is connected to the second terminal of the second LED group, the source of the third power transistor, and ground through the fifth capacitor, and the gate of the third power transistor, the gate of the fourth power transistor, and the gate of the fifth power transistor are respectively connected to the IO3, IO4, and IO5 terminals of the first controller.

[0023] As a further embodiment of the present invention: the energy storage control module includes an energy storage device, an eighth power transistor, a ninth power transistor, a sixth power transistor, a seventh power transistor, a sixth diode, and a seventh diode;

[0024] Preferably, the first terminal of the energy storage device is connected to the source of the ninth power transistor, the source of the eighth power transistor, the drain of the sixth power transistor, and the drain of the seventh power transistor. The drains of the ninth and eighth power transistors are respectively connected to the cathodes of the second and third diodes. The sources of the sixth and seventh power transistors are respectively connected to the anodes of the sixth and seventh diodes. The cathode of the sixth diode is connected to the first terminal of the third inductor. The cathode of the seventh diode is connected to the auxiliary adjustment module. The gates of the sixth, seventh, eighth, and ninth power transistors are respectively connected to the IO10, IO5, IO8, and IO9 terminals of the first controller. The second terminal of the energy storage device is grounded.

[0025] As a further embodiment of the present invention: the auxiliary adjustment module includes a fifth inductor, an eighth diode, and a tenth power transistor;

[0026] Preferably, the anode of the eighth diode is connected to the drain of the tenth power transistor and connected to the cathode of the seventh diode through the fifth inductor. The cathode of the eighth diode is connected to the first terminal of the second LED group. The source of the tenth power transistor is connected to the second terminal of the second LED group and the ground terminal. The gate of the tenth power transistor is connected to the IO11 terminal of the first controller.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The intelligent road lighting energy-saving control circuit of the present invention can be controlled by a micro-control module according to the voltage magnitude of photoelectric conversion, thereby controlling the photoelectric conversion and power regulation state of the photovoltaic control module, realizing power regulation, isolation transformation, and power superposition processing, improving voltage gain, and coping with different light intensities. This allows the photovoltaic control module to still utilize the power generated by the road lighting module while the road lighting is in operation, improving the energy-saving effect. At the same time, during the operation of the road lighting, the energy storage control module cooperates with the photovoltaic control module to provide mixed power supply, and performs constant current and voltage stabilization drive control on the first and second lighting modules. When the power of the energy storage control module is lower than the second low voltage threshold, the energy storage control module will cooperate with the auxiliary adjustment module to supply power to the second lighting module alone, while the mains power module cooperates with the photovoltaic control module to supply power to the first lighting module, improving the power utilization rate of the energy storage control module. When the power of the energy storage control module is lower than the undervoltage threshold, the mains power module will cooperate with the photovoltaic control module to perform constant current and voltage stabilization drive on the first and second lighting modules, thus rationally and efficiently distributing power. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic block diagram of a smart road lighting energy-saving control circuit provided in an embodiment of the present invention.

[0030] Figure 2 A circuit diagram of a smart road lighting energy-saving control circuit provided in an embodiment of the present invention.

[0031] Figure 3 The circuit diagram of the energy storage control module provided in the embodiment of the present invention.

[0032] Figure 4 The circuit diagram is provided for the auxiliary adjustment module in the embodiment of the present invention. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1 A smart road lighting energy-saving control circuit includes: a mains power module 1, a photovoltaic control module 2, an energy storage control module 3, a micro control module 4, a power regulation module 5, an auxiliary regulation module 6, a first lighting module 7, and a second lighting module 8.

[0035] Specifically, the mains power module 1 is connected to the microcontroller module 4 and the power regulation module 5. It is used to step down and rectify the mains power and output the first power. When it receives the first power supply signal output by the microcontroller module 4, it transmits the first power to the power regulation module 5.

[0036] Photovoltaic control module 2, connected to microcontroller module 4, is used for photoelectric conversion. When it receives the first adjustment signal output by microcontroller module 4, it adjusts the power of the converted electrical energy and outputs the second electrical energy. When it receives the first compensation signal output by microcontroller module 4, it performs isolation transformation processing on the converted electrical energy and superimposes it with the second electrical energy to output the third electrical energy.

[0037] The energy storage control module 3 is connected to the microcontroller module 4, the power regulation module 5, and the auxiliary regulation module 6. It is used to store the second energy when it receives the first energy storage signal output by the microcontroller module 4, store the third energy when it receives the second energy storage signal output by the microcontroller module 4, provide the fourth energy, and transmit the fourth energy to the power regulation module 5 when it receives the first discharge signal output by the microcontroller module 4. It also transmits the fourth energy to the auxiliary regulation module 6 when it receives the second discharge signal output by the microcontroller module 4.

[0038] The microcontroller module 4 is used to output a first adjustment signal during photoelectric conversion, output a first energy storage signal when the photoelectric conversion energy is greater than a set first low voltage threshold, output a first compensation signal and a second energy storage signal when the photoelectric conversion energy is lower than the first low voltage threshold, output a second adjustment signal and a drive signal when lighting is required, and output a first discharge signal when the energy stored in the energy storage control module 3 is higher than the second low voltage threshold, output a first power supply signal, a second discharge signal and a third adjustment signal when the stored energy is lower than the second low voltage threshold, and stop controlling the energy storage control module 3 when the stored energy is lower than the undervoltage threshold.

[0039] The power regulation module 5 is connected to the microcontroller module 4, the photovoltaic control module 2 and the energy storage control module 3. It is used to regulate the power of the first or fourth electrical energy when the second regulation signal is received, and to superimpose the regulated electrical energy with the third electrical energy to output the fifth electrical energy.

[0040] The auxiliary adjustment module 6 is connected to the energy storage control module 3 and the microcontroller module 4. It is used to adjust the power of the fourth electrical energy and output the sixth electrical energy when the third adjustment signal is received.

[0041] The first lighting module 7 is connected to the power regulation module 5 and is used to receive the fifth electrical energy and perform lighting work.

[0042] The second lighting module 8 is connected to the microcontroller module 4, the power regulation module 5, the first lighting module 7, and the auxiliary regulation module 6. It is used to connect in series with the first lighting module 7 and perform constant current and voltage regulated lighting operation with the first lighting module 7 when a drive signal is received. When a third regulation signal is received, it receives sixth electrical energy and performs lighting operation independently.

[0043] In a specific embodiment, the aforementioned mains power module 1 can be a mains power circuit composed of a mains power interface, a power conversion device, and a field-effect transistor, connecting to the mains power and performing voltage reduction, rectification, filtering, and power transmission control on the mains power; the aforementioned photovoltaic control module 2 can be a photovoltaic control circuit composed of a photovoltaic power supply, an inductor, a transformer, and a field-effect transistor, performing photoelectric conversion and, based on the voltage magnitude of the converted power, performing power regulation, isolation transformation, and power superposition processing; the aforementioned energy storage control module 3 can be an energy storage control circuit composed of an energy storage device, a field-effect transistor, and a diode, performing power transmission control, energy storage, and discharge control; the aforementioned microcontroller module 4 can be a microcontroller circuit composed of a microcontroller and resistors. The microcontroller integrates many components such as an arithmetic unit, a controller, a memory, a comparator, and input / output devices, realizing functions such as signal processing, data storage, module control, timing control, and voltage comparison. The resistors set a first low-voltage threshold, a second low-voltage threshold, and an undervoltage threshold, controlling the energy storage control module 3 and the photovoltaic... The control module 2 samples the voltage and compares the set threshold with the sampled signal. The first low-voltage threshold is the electrical energy generated by photoelectric conversion when the first lighting module 7 and the second lighting module 8 are working. The second low-voltage threshold is the minimum operating voltage when the first lighting module 7 and the second lighting module 8 are connected in series for lighting. The power adjustment module 5 can use a power adjustment and electrical energy superposition process composed of field-effect transistors, diodes, inductors, etc. The auxiliary adjustment module 6 can use an auxiliary adjustment circuit composed of field-effect transistors, inductors, and diodes to adjust the power and supply power to the second lighting module 8. The first lighting module 7 can use a first lighting circuit composed of diodes, LED groups, and capacitors to perform lighting work. The second lighting module 8 can use a second lighting circuit composed of field-effect transistors, LED groups, capacitors, etc., and can control the connection state with the first lighting module 7, i.e., series connection and individual connection state, to realize individual lighting and constant current and voltage regulated lighting work with the first lighting module 7.

[0044] In another embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The mains power module 1 includes a mains power interface, a power exchange device, and an eleventh power transistor Q11; the microcontroller module 4 includes a first controller U1;

[0045] Specifically, the first and second ends of the mains power interface are connected to the first and second ends of the power exchange device, respectively. The third end of the power exchange device is connected to the drain of the eleventh power transistor Q11. The source of the first power transistor Q1 is connected to the power regulation module 5. The fourth end of the power conversion device is grounded. The gate of the eleventh power transistor Q11 is connected to the IO6 end of the first controller U1.

[0046] In a specific embodiment, the aforementioned power conversion device may consist of a transformer, a rectifier, and a filter; the aforementioned eleventh power transistor Q11 may be an N-channel MOSFET with a body diode; the aforementioned first controller U1 may be composed of an STM32 microcontroller, which, in conjunction with a resistor (not shown), performs voltage sampling on the electrical energy stored in the energy storage control module 3, performs voltage sampling on the electrical energy generated by the photovoltaic control module 2, and sets a first low-voltage threshold, a second low-voltage threshold, and an undervoltage threshold, and compares the voltage with the sampled signal and the set threshold.

[0047] Furthermore, the power regulation module 5 includes a third inductor L3, a first diode D1, a third capacitor C3, a fourth inductor L4, and a second power transistor Q2;

[0048] Specifically, the first end of the third inductor L3 is connected to the source of the eleventh power transistor Q11 and the energy storage control module 3. The second end of the third inductor L3 is connected to the anode of the first diode D1 and the drain of the second power transistor Q2. The cathode of the first diode D1 is connected to the first end of the third capacitor C3 and the first end of the fourth inductor L4. The second end of the fourth inductor L4 is connected to the first lighting module 7 and the second lighting module 8. The second end of the third capacitor C3 is connected to the photovoltaic control module 2. The source of the second power transistor Q2 is connected to the fourth end of the power conversion device. The gate of the second power transistor Q2 is connected to the IO2 end of the first controller U1.

[0049] In a specific embodiment, the second power transistor Q2 can be an N-channel MOSFET with a body diode, which, together with the third inductor L3, the first diode D1 and the third capacitor C3, performs boost regulation; the fourth inductor L4, together with the third capacitor C3, can perform energy storage and power supply.

[0050] Furthermore, the photovoltaic control module 2 includes a photovoltaic power supply, a first inductor L1, a first transformer B1, a second inductor L2, a first thyristor S1, a third diode D3, a first power transistor Q1, a second diode D2, a second capacitor C2, and a first capacitor C1;

[0051] Specifically, the first end of the photovoltaic power supply is connected to the first end of the primary side of the first transformer B1, and is connected to one end of the first thyristor S1 and one end of the second inductor L2 through the first inductor L1. The other end of the first thyristor S1 is connected to the second end of the primary side of the first transformer B1. The second end of the second inductor L2 is connected to the anode of the third diode D3 and the drain of the first power transistor Q1. The cathode of the third diode D3 is connected to one end of the second capacitor C2 and the first end of the secondary side of the first transformer B1, and is connected to the source of the first power transistor Q1, the second end of the photovoltaic power supply, and the fourth end of the power conversion device through the first capacitor C1. The second end of the secondary side of the first transformer B1 is connected to the anode of the second diode D2. The cathode of the second diode D2 is connected to the other end of the second capacitor C2 and the second end of the third capacitor C3. The gate of the first power transistor Q1 and the control terminal of the first thyristor S1 are respectively connected to the IO1 and IO7 terminals of the first controller U1.

[0052] In a specific embodiment, the first inductor L1 and the second inductor L2 are the magnetizing inductance and leakage inductance of the first transformer B1, respectively; the first power transistor Q1 can be an N-channel field-effect transistor with a body diode and a capacitor; the first thyristor S1 can be a bidirectional thyristor; and the second capacitor C2 and the first capacitor C1 can be used for filtering and energy superposition processing.

[0053] Furthermore, the first lighting module 7 includes a fourth diode D4, a fourth capacitor C4, and a first LED group;

[0054] Specifically, the anode of the fourth diode D4 is connected to the second terminal of the fourth inductor L4, the cathode of the fourth diode D4 is connected to the first terminal of the first LED group, and the second lighting module 8 and the second terminal of the first LED group are connected through the fourth capacitor C4.

[0055] In a specific embodiment, the first LED group described above may be composed of multiple groups of single LEDs connected in series and parallel.

[0056] Furthermore, the second lighting module 8 includes a fourth power transistor Q4, a fifth power transistor Q5, a fifth diode D5, a third power transistor Q3, a fifth capacitor C5, and a second LED group;

[0057] Specifically, the drain of the fourth power transistor Q4 is connected to the anode of the fourth diode D4, the source of the fourth power transistor Q4 is connected to the second terminal of the first LED group, the drain of the fifth power transistor Q5, the anode of the fifth diode D5, and the drain of the third power transistor Q3, the cathode of the fifth diode D5 is connected to the first terminal of the second LED group and is connected to the second terminal of the second LED group, the source of the third power transistor Q3, and the ground terminal through the fifth capacitor C5, and the gate of the third power transistor Q3, the gate of the fourth power transistor Q4, and the gate of the fifth power transistor Q5 are respectively connected to the IO3, IO4, and IO5 terminals of the first controller U1.

[0058] In a specific embodiment, the selection of the second LED group is the same as that of the first LED group; the fourth power transistor Q4 and the third power transistor Q3 can both be N-channel field-effect transistors to control the constant current and voltage regulated lighting operation of the first LED group and the second LED group; the fifth power transistor Q5 can be an N-channel field-effect transistor with a body diode to control the individual lighting operation of the first lighting module 7.

[0059] Furthermore, the energy storage control module 3 includes an energy storage device, an eighth power transistor Q8, a ninth power transistor Q9, a sixth power transistor Q6, a seventh power transistor Q7, a sixth diode D6, and a seventh diode D7;

[0060] Specifically, the first terminal of the energy storage device is connected to the source of the ninth power transistor Q9, the source of the eighth power transistor Q8, the drain of the sixth power transistor Q6, and the drain of the seventh power transistor Q7. The drains of the ninth power transistor Q9 and the eighth power transistor Q8 are respectively connected to the cathodes of the second diode D2 and the third diode D3. The sources of the sixth power transistor Q6 and the seventh power transistor Q7 are respectively connected to the anodes of the sixth diode D6 and the seventh diode D7. The cathode of the sixth diode D6 is connected to the first terminal of the third inductor L3. The cathode of the seventh diode D7 is connected to the auxiliary adjustment module 6. The gates of the sixth power transistor Q6, the seventh power transistor Q7, the eighth power transistor Q8, and the ninth power transistor Q9 are respectively connected to the IO10, IO5, IO8, and IO9 terminals of the first controller U1. The second terminal of the energy storage device is grounded.

[0061] In a specific embodiment, the energy storage device can be a storage battery; the ninth power transistor Q9 and the eighth power transistor Q8 can both be N-channel field-effect transistors with body diodes for charging control; the sixth power transistor Q6 and the seventh power transistor Q7 can both be N-channel field-effect transistors with body diodes for discharging control.

[0062] Furthermore, the auxiliary adjustment module 6 includes a fifth inductor L5, an eighth diode Q8, and a tenth power transistor Q10;

[0063] Specifically, the anode of the eighth diode Q8 is connected to the drain of the tenth power transistor Q10 and connected to the cathode of the seventh diode D7 through the fifth inductor L5. The cathode of the eighth diode Q8 is connected to the first terminal of the second LED group. The source of the tenth power transistor Q10 is connected to the second terminal of the second LED group and the ground terminal. The gate of the tenth power transistor Q10 is connected to the IO11 terminal of the first controller U1.

[0064] In a specific embodiment, the tenth power transistor Q10 can be an N-channel MOSFET with a body diode, which, together with the fifth inductor L5 and the eighth capacitor, performs boost regulation.

[0065] In this embodiment of an intelligent road lighting energy-saving control circuit, when neither the road lighting lamps (i.e., the first LED group and the second LED group) are operating, the photovoltaic power supply will perform photoelectric conversion. During the photoelectric conversion, the IO1 terminal of the first controller U1 outputs a first adjustment signal to control the conduction state of the first power transistor Q1, and coordinates with the first inductor L1, the second inductor L2, the third diode D3, and the first capacitor C1 to perform power regulation processing, outputting second electrical energy. The first controller U1 detects the magnitude of the converted electrical energy and the voltage of the set first low-voltage threshold. When the photoelectric converted electrical energy is greater than the set first low-voltage threshold, the IO8 terminal of the first controller U1 outputs a first energy storage signal to control the conduction of the eighth power transistor Q8, so that the second... Electrical energy is stored by an energy storage device. When the electrical energy converted from photoelectric power is lower than the first low-voltage threshold, the IO7 terminal of the first controller U1 outputs a first compensation signal to control the first thyristor S1 to conduct, so that the first transformer B1 is connected and performs isolation transformation. The electrical energy output from the secondary side of the first transformer B1 is superimposed through the second capacitor C2 and the first capacitor C1 to output a third electrical energy. The IO9 terminal of the first controller U1 outputs a second energy storage signal to control the ninth power transistor Q9 to transmit the third electrical energy to the energy storage device. During the lighting operation of the first LED group and the second LED group, since the first LED group and the second LED group provide stable lighting, the photovoltaic control module 2 also generates electrical energy, but the generated electrical energy is lower than the first low-voltage threshold. Block 4 controls the third electrical energy output from the photovoltaic control module 2, and this third electrical energy is relatively stable. Simultaneously, when lighting is required, the IO2 terminal of the first controller U1 outputs a second adjustment signal, which, in conjunction with the third inductor L3 and the first diode D1, boosts and regulates the input electrical energy. When the stored energy exceeds the second low-voltage threshold, the IO10 terminal of the first controller U1 outputs a first discharge signal and controls the sixth power transistor Q6 to conduct. The electrical energy released by the energy storage device is transmitted to the power regulation module 5 via the sixth power transistor Q6. After adjustment by the isolation regulation module, it supplies power to the first lighting module 7 and the second lighting module 8. At the same time, the first controller U1 outputs a drive signal to control the first lighting module 7 and the second lighting module 8 to perform constant current and voltage regulated lighting. Specifically, the system first controls the conduction of the fourth power transistor Q4 and the third power transistor Q3. The second capacitor C2, the third capacitor C3, and the first capacitor C1 are connected in series to supply power and form a circuit with the fourth inductor L4, which stores electrical energy. Then, the third power transistor Q3 and the fourth power transistor Q4 are sequentially disconnected. Next, the second LED group is controlled to perform constant current and voltage regulated lighting. When the stored energy level is lower than the second low-voltage threshold, the IO6 terminal of the first controller U1 outputs a first power supply signal and controls the conduction of the eleventh power transistor Q11, allowing the mains power interface to work in conjunction with the photovoltaic power supply for superimposed power supply. Furthermore, the IO5 terminal of the first controller U1 outputs a second discharge signal and controls the conduction of the fifth power transistor Q5 and the seventh power transistor Q7.The power regulation module 5 drives the lighting operation of the first LED group. The IO11 terminal of the first controller U1 outputs a third regulation signal and controls the tenth power transistor Q10 to conduct. This, in conjunction with the fifth inductor L5 and the eighth diode Q8, regulates the energy released by the energy storage device and independently drives the lighting of the second LED group. When the energy stored in the energy storage device falls below the under-power threshold, the energy storage device stops discharging. At this time, the microcontroller module 4 controls the mains power module 1 to supply power, while the power regulation module 5 and the photovoltaic control module 2 provide combined power to drive the second LED group for constant current and voltage regulated lighting operation.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart road lighting energy-saving control circuit, characterized in that: The smart road lighting energy-saving control circuit includes: a mains power module, a photovoltaic control module, an energy storage control module, a microcontroller module, a power regulation module, an auxiliary regulation module, a first lighting module, and a second lighting module; The mains power module is connected to the microcontroller module and the power regulation module. It is used to step down and rectify the mains power and output the first power. When it receives the first power supply signal output by the microcontroller module, it transmits the first power to the power regulation module. The photovoltaic control module is connected to the microcontroller module and is used for photoelectric conversion. When it receives the first adjustment signal output by the microcontroller module, it adjusts the power of the converted electrical energy and outputs the second electrical energy. When it receives the first compensation signal output by the microcontroller module, it performs isolation transformation processing on the converted electrical energy and superimposes it with the second electrical energy to output the third electrical energy. The energy storage control module is connected to the microcontroller module, the power regulation module, and the auxiliary regulation module. It is used to store second electrical energy when it receives the first energy storage signal output by the microcontroller module, store third electrical energy when it receives the second energy storage signal output by the microcontroller module, provide fourth electrical energy, and transmit the fourth electrical energy to the power regulation module when it receives the first discharge signal output by the microcontroller module, and transmit the fourth electrical energy to the auxiliary regulation module when it receives the second discharge signal output by the microcontroller module. The microcontroller module is used to output a first adjustment signal during photoelectric conversion, output a first energy storage signal when the photoelectric converted energy is greater than a set first low voltage threshold, output a first compensation signal and a second energy storage signal when the photoelectric converted energy is lower than the first low voltage threshold, output a second adjustment signal and a drive signal when lighting is required, output a first discharge signal when the energy stored in the energy storage control module is higher than the second low voltage threshold, output a first power supply signal, a second discharge signal and a third adjustment signal when the stored energy is lower than the second low voltage threshold, and stop controlling the energy storage control module when the stored energy is lower than the undervoltage threshold. The power regulation module is connected to the microcontroller module, the photovoltaic control module and the energy storage control module. When the second regulation signal is received, the module regulates the power of the first or fourth electrical energy and superimposes the regulated electrical energy with the third electrical energy to output the fifth electrical energy. The auxiliary adjustment module is connected to the energy storage control module and the micro control module, and is used to adjust the power of the fourth electrical energy and output the sixth electrical energy when the third adjustment signal is received. The first lighting module is connected to the power regulation module and is used to receive the fifth electrical energy and perform lighting work; The second lighting module is connected to the microcontroller module, the power regulation module, the first lighting module, and the auxiliary regulation module. It is used to connect in series with the first lighting module and perform constant current and voltage regulated lighting operation with the first lighting module when a drive signal is received. When a third regulation signal is received, it receives sixth electrical energy and performs lighting operation independently.

2. The intelligent road lighting energy-saving control circuit according to claim 1, characterized in that, The mains power module includes a mains power interface, a power exchange device, and an eleventh power transistor; the microcontroller module includes a first controller. The first and second ends of the mains interface are respectively connected to the first and second ends of the power exchange device. The third end of the power exchange device is connected to the drain of the eleventh power transistor. The source of the eleventh power transistor is connected to the power regulation module. The fourth end of the power conversion device is grounded. The gate of the eleventh power transistor is connected to the IO6 end of the first controller.

3. The intelligent road lighting energy-saving control circuit according to claim 2, characterized in that, The power regulation module includes a third inductor, a first diode, a third capacitor, a fourth inductor, and a second power transistor; The first end of the third inductor is connected to the source of the eleventh power transistor and the energy storage control module. The second end of the third inductor is connected to the anode of the first diode and the drain of the second power transistor. The cathode of the first diode is connected to the first end of the third capacitor and the first end of the fourth inductor. The second end of the fourth inductor is connected to the first lighting module and the second lighting module. The second end of the third capacitor is connected to the photovoltaic control module. The source of the second power transistor is connected to the fourth end of the power conversion device. The gate of the second power transistor is connected to the IO2 end of the first controller.

4. The intelligent road lighting energy-saving control circuit according to claim 3, characterized in that, The photovoltaic control module includes a photovoltaic power supply, a first inductor, a first transformer, a second inductor, a first thyristor, a third diode, a first power transistor, a second diode, a second capacitor, and a first capacitor; The first end of the photovoltaic power supply is connected to the first end of the primary side of the first transformer and is connected to one end of the first thyristor and one end of the second inductor through the first inductor. The other end of the first thyristor is connected to the second end of the primary side of the first transformer. The second end of the second inductor is connected to the anode of the third diode and the drain of the first power transistor. The cathode of the third diode is connected to one end of the second capacitor and the first end of the secondary side of the first transformer and is connected to the source of the first power transistor, the second end of the photovoltaic power supply, and the fourth end of the power conversion device through the first capacitor. The second end of the secondary side of the first transformer is connected to the anode of the second diode. The cathode of the second diode is connected to the other end of the second capacitor and the second end of the third capacitor. The gate of the first power transistor and the control terminal of the first thyristor are respectively connected to the IO1 and IO7 terminals of the first controller.

5. The intelligent road lighting energy-saving control circuit according to claim 4, characterized in that, The first lighting module includes a fourth diode, a fourth capacitor, and a first LED group; The anode of the fourth diode is connected to the second terminal of the fourth inductor, and the cathode of the fourth diode is connected to the first terminal of the first LED group and connected to the second lighting module and the second terminal of the first LED group through the fourth capacitor.

6. The intelligent road lighting energy-saving control circuit according to claim 5, characterized in that, The second lighting module includes a fourth power transistor, a fifth power transistor, a fifth diode, a third power transistor, a fifth capacitor, and a second LED group; The drain of the fourth power transistor is connected to the anode of the fourth diode. The source of the fourth power transistor is connected to the second terminal of the first LED group, the drain of the fifth power transistor, the anode of the fifth diode, and the drain of the third power transistor. The cathode of the fifth diode is connected to the first terminal of the second LED group and is connected to the second terminal of the second LED group, the source of the third power transistor, and ground through the fifth capacitor. The gates of the third power transistor, the fourth power transistor, and the fifth power transistor are respectively connected to the IO3, IO4, and IO5 terminals of the first controller.

7. The intelligent road lighting energy-saving control circuit according to claim 6, characterized in that, The energy storage control module includes an energy storage device, an eighth power transistor, a ninth power transistor, a sixth power transistor, a seventh power transistor, a sixth diode, and a seventh diode; The first terminal of the energy storage device is connected to the source of the ninth power transistor, the source of the eighth power transistor, the drain of the sixth power transistor, and the drain of the seventh power transistor. The drain of the ninth power transistor and the drain of the eighth power transistor are respectively connected to the cathode of the second diode and the cathode of the third diode. The source of the sixth power transistor and the source of the seventh power transistor are respectively connected to the anode of the sixth diode and the anode of the seventh diode. The cathode of the sixth diode is connected to the first terminal of the third inductor. The cathode of the seventh diode is connected to the auxiliary adjustment module. The gates of the sixth power transistor, the seventh power transistor, the eighth power transistor, and the ninth power transistor are respectively connected to the IO10, IO5, IO8, and IO9 terminals of the first controller. The second terminal of the energy storage device is grounded.

8. The intelligent road lighting energy-saving control circuit according to claim 7, characterized in that, The auxiliary adjustment module includes a fifth inductor, an eighth diode, and a tenth power transistor; The anode of the eighth diode is connected to the drain of the tenth power transistor and connected to the cathode of the seventh diode through the fifth inductor. The cathode of the eighth diode is connected to the first terminal of the second LED group. The source of the tenth power transistor is connected to the second terminal of the second LED group and the ground terminal. The gate of the tenth power transistor is connected to the IO11 terminal of the first controller.

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