CN114567066A - Street lamp control circuit and method powered by combination of solar energy and mains supply - Google Patents

Street lamp control circuit and method powered by combination of solar energy and mains supply Download PDF

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Publication number
CN114567066A
CN114567066A CN202210218459.3A CN202210218459A CN114567066A CN 114567066 A CN114567066 A CN 114567066A CN 202210218459 A CN202210218459 A CN 202210218459A CN 114567066 A CN114567066 A CN 114567066A
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China
Prior art keywords
circuit
power supply
battery
voltage
main control
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CN202210218459.3A
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Chinese (zh)
Inventor
吴宗林
赵勇
胡永峰
徐士炜
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Zhejiang Haoteng Electron Technology Co ltd
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Zhejiang Haoteng Electron Technology Co ltd
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Priority to CN202210218459.3A priority Critical patent/CN114567066A/en
Publication of CN114567066A publication Critical patent/CN114567066A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/10—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by displaying of information or by user interaction, e.g. supervisory control and data acquisition [SCADA] systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/12—Monitoring network conditions, e.g. electrical magnitudes or operational status
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

本发明属于电子电路技术领域，公开了一种太阳能和市电组合供电的路灯控制电路及方法，包括光伏板、主控电路、光伏输入采样电路、电池充电电路、电池电压采样电路、照明供电切换开关、市电供电电路和LED驱动电路，主控电路采集光伏板电压电流信号、电池电压信号，并根据光伏板电压电流信号控制充电芯片供电电路开始工作，同时控制电池充电电路的充电功率，并根据电池电压信号控制照明供电切换开关在电池供电和市政供电之间切换。本发明设计的控制电路能够最大化利用太阳能，同时在太阳能不足的情况下能够切换市电供电，避免了路灯断电。同时具有物联网接口，可实现远程监控和管理功能。

Figure 202210218459

The invention belongs to the technical field of electronic circuits, and discloses a street lamp control circuit and method for combined power supply of solar energy and commercial power, comprising a photovoltaic panel, a main control circuit, a photovoltaic input sampling circuit, a battery charging circuit, a battery voltage sampling circuit, and a lighting power supply switching circuit. Switch, mains power supply circuit and LED drive circuit, the main control circuit collects photovoltaic panel voltage and current signals and battery voltage signals, and controls the charging chip power supply circuit to work according to the photovoltaic panel voltage and current signals, and controls the charging power of the battery charging circuit at the same time. Control the lighting power supply switch to switch between battery power supply and municipal power supply according to the battery voltage signal. The control circuit designed by the invention can maximize the utilization of solar energy, and at the same time, when the solar energy is insufficient, the mains power supply can be switched, so as to avoid the power failure of street lamps. At the same time, it has an Internet of Things interface, which can realize remote monitoring and management functions.

Figure 202210218459

Description

Street lamp control circuit and method powered by combination of solar energy and mains supply
Technical Field
The invention belongs to the technical field of electronic circuits, and particularly relates to a street lamp control circuit and method powered by solar energy and commercial power in a combined mode.
Background
The street lamp on the road at present adopts solar energy power supply, or adopts the municipal power supply, does not adopt the power supply mode that solar energy and commercial power combine, and solar energy power supply can practice thrift the power, but because present solar energy is very in overcast and rainy day gas generating efficiency, adopts the street lamp of solar energy power supply completely, shelters from when overcast and rainy weather is too much or seasonal sunshine, leads to not having sufficient illumination, and the duration of the journey that leans on the battery is limited, reaches certain day, and the street lamp has just gone out. Light supplement at night in some important road sections or monitoring areas cannot be interrupted, and illumination at night in continuous rainy days must be ensured by using solar energy for illumination.
Disclosure of Invention
The invention aims to provide a street lamp control circuit and method powered by combining solar energy and commercial power, and aims to solve the technical problem that the power supply of the existing solar power supply street lamp is insufficient in rainy days.
In order to achieve the purpose, the specific technical scheme of the street lamp control circuit and method for supplying power by combining solar energy and commercial power is as follows:
a street lamp control circuit powered by solar energy and mains supply in a combined mode comprises a photovoltaic panel, a main control circuit, a photovoltaic input sampling circuit, a battery charging circuit, a battery voltage sampling circuit, a lighting power supply changeover switch, a mains supply circuit and an LED drive circuit, wherein the photovoltaic panel is connected with the battery charging circuit, the photovoltaic input sampling circuit is connected with the photovoltaic panel and the main control circuit, the battery charging circuit is connected with the lighting power supply changeover switch, the main control circuit and the battery voltage sampling circuit, the battery voltage sampling circuit is connected with the main control circuit, the main control circuit is connected with the lighting power supply changeover switch and the LED drive circuit, the lighting power supply changeover switch and the LED drive circuit are connected with a street lamp, and the mains supply circuit is connected with the lighting power supply changeover switch;
the photovoltaic panel is used for collecting solar energy;
the photovoltaic input sampling circuit is used for collecting voltage and current signals input by the photovoltaic panel;
the battery charging circuit charges the battery by using the solar energy collected by the photovoltaic panel;
the battery voltage sampling circuit is used for acquiring a voltage signal of the battery;
the lighting power supply changeover switch is used for switching battery power supply or municipal power supply;
the LED driving circuit is used for driving the lighting circuit;
the commercial power supply circuit is used for providing a municipal power supply;
the main control circuit is used for collecting a voltage and current signal of the photovoltaic panel and a voltage and current signal of the battery, controlling the power supply circuit of the charging chip to start working according to the voltage and current signal of the photovoltaic panel, controlling the charging power of the charging circuit of the battery, and controlling the lighting power supply change-over switch to switch between battery power supply and municipal power supply according to the voltage and current signal of the battery.
Further, the voltage stabilizing circuit comprises a 3.3V voltage stabilizing circuit, wherein the 3.3V voltage stabilizing circuit is connected with the main control circuit, and the 3.3V voltage stabilizing circuit is used for supplying power to the main control circuit and the component used for DC3.3V.
Furthermore, the photovoltaic input sampling circuit comprises a photovoltaic input voltage sampling circuit and a photovoltaic charging current sampling amplifier, and the photovoltaic input voltage sampling circuit is connected with the main control circuit and is used for collecting voltage signals input by the photovoltaic panel; the photovoltaic input voltage sampling circuit is connected with the photovoltaic charging current sampling amplifier, the photovoltaic charging current sampling amplifier is connected with the main control circuit, and the photovoltaic charging current sampling amplifier is used for amplifying current signals of the photovoltaic panel and then acquiring and amplifying the signals to the main control circuit.
Furthermore, the battery charging circuit comprises a charging chip power supply circuit, an MPPT charging circuit and a battery, the charging chip power supply circuit is connected with the MPPT charging circuit and the master control circuit, the photovoltaic panel is connected with the MPPT charging circuit, the MPPT charging circuit is connected with the battery and the master control circuit, and the battery is connected with the battery voltage sampling circuit; the charging chip power supply circuit is used for providing a power supply for the MPPT charging circuit, and the MPPT charging circuit is used for controlling the current and voltage of battery charging.
Further, when the voltage of the battery is higher than a set value, the battery is adopted for supplying power; when the voltage of the battery is lower than a set value, the main control circuit is switched to a commercial power circuit for power supply; the main control circuit controls the voltage of the LED driving circuit according to the instruction, so that the brightness of the street lamp is controlled; the master control circuit controls the switching off of the photovoltaic input voltage sampling circuit according to the signal of the battery voltage sampling circuit; when the voltage of the battery voltage sampling circuit reaches the highest value, the main control circuit controls the input voltage of the photovoltaic panel to be disconnected; the main control circuit calculates the electric quantity of the battery according to the voltage of the battery collected by the battery voltage sampling circuit, and the commercial power supply circuit is connected with the main control circuit; and the main control circuit judges the current power supply mode according to the voltage signal of the municipal power supply signal or the voltage value of the battery voltage sampling circuit.
Further, the intelligent terminal comprises an internet of things interface circuit, the 3.3V voltage stabilizing circuit is connected with the internet of things interface circuit, the internet of things interface circuit is connected with the main control circuit, and the internet of things interface circuit is used for establishing connection between the intelligent terminal and the main control circuit.
The infrared remote control system further comprises a functional interface circuit, wherein the functional interface circuit comprises a programming interface circuit and an infrared remote control interface circuit, the programming interface circuit is connected with the main control circuit, and the programming interface circuit is used for burning a program to the main control chip; the infrared remote control interface circuit is connected with the main control circuit and is externally connected with the infrared sensor.
The invention also discloses a method for controlling the power supply of the street lamp by combining solar energy and commercial power, which comprises the following steps:
step 1: a signal acquisition step:
step 1.1: collecting current and voltage signals of a photovoltaic panel: the photovoltaic input sampling circuit collects voltage and current signals input by a photovoltaic panel;
step 1.2: collecting a battery voltage signal: collecting a battery voltage signal;
step 2: a judging step:
step 2.1: judging the voltage and current intensity of the photovoltaic panel;
step 2.2: judging the voltage intensity of the battery;
and step 3: the control steps are as follows:
step 3.1: controlling the charging power of the battery: the main control circuit adjusts the charging power of the battery charging circuit according to the magnitude of the current and voltage signals of the photovoltaic panel;
step 3.2: controlling a power supply switch of the charging chip: the main control circuit controls the power supply circuit of the charging chip to be switched on or off according to the voltage signal of the photovoltaic panel; controlling the power supply circuit of the charging chip to be closed according to the battery voltage signal, and closing the power supply circuit of the charging chip when the battery voltage reaches the maximum value;
step 3.3: lighting power supply change-over switch control: the main control circuit controls the switching of the lighting power supply switch according to the voltage of the battery, and when the voltage of the battery is higher than a set value, the battery is adopted for supplying power; and when the voltage of the battery is lower than a set value, the municipal power supply is switched to.
Further, the step 1 comprises power supply mode signal acquisition: collecting a voltage signal of a mains supply circuit or a voltage value of a battery voltage sampling circuit; the step 3 comprises LED brightness control: the main control circuit controls the brightness of the street lamp according to the program instruction.
Further, the method comprises the following steps of 4: data transmission: the intelligent terminal realizes information interaction and remote control with the main control circuit through an Internet of things interface; and 5: infrared control: the infrared remote controller controls the main control circuit through the infrared interface circuit, and comprises a power supply switching mode and a street lamp brightness adjusting mode.
The street lamp control circuit and method powered by the combination of solar energy and commercial power provided by the invention have the following advantages: the street lamp control circuit and method powered by the combination of the solar energy and the commercial power judges the electric quantity of the battery according to the voltage of the battery, switches the battery and the commercial power through the lighting power supply change-over switch, automatically switches to the commercial power mode when the electric quantity of the battery is exhausted, automatically switches to the battery power supply mode when the battery is charged by the solar energy, and automatically switches back to the battery power supply mode, so that the problem that the street lamp is extinguished due to insufficient battery endurance is solved. The control circuit designed by the invention can utilize solar energy to the maximum extent, and can switch commercial power supply under the condition of insufficient solar energy, thereby avoiding the power failure of the street lamp. Meanwhile, the circuit provided by the invention is provided with an interface of the Internet of things, so that the real-time display of the battery power, equipment faults and the current power supply mode of a background can be realized, and the equipment can be controlled, including power supply mode switching, street lamp brightness adjustment and the like. Has remote monitoring and management functions.
Drawings
FIG. 1 is a block diagram of a street lamp control circuit module of the present invention;
FIG. 2 is a schematic diagram of a master control circuit of the present invention;
fig. 3 is a schematic diagram of the lighting power supply changeover switch and the mains supply circuit of the invention.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following describes a street lamp control circuit and method powered by a combination of solar energy and commercial power in detail with reference to the accompanying drawings.
As shown in fig. 1, the street lamp control circuit powered by combination of solar energy and commercial power of the invention comprises a photovoltaic panel, a main control circuit, a 3.3V voltage stabilizing circuit, a photovoltaic input sampling circuit, a battery charging circuit, a battery voltage sampling circuit, an illumination power supply change-over switch, a commercial power supply circuit and an LED driving circuit.
The 3.3V voltage stabilizing circuit is connected with the main control circuit, the photovoltaic panel is connected with the battery charging circuit, the photovoltaic input sampling circuit is connected with the photovoltaic panel and the main control circuit, the battery charging circuit is connected with the lighting power supply change-over switch, the main control circuit and the battery voltage sampling circuit, the battery voltage sampling circuit is connected with the main control circuit, the main control circuit is connected with the lighting power supply change-over switch and the LED drive circuit, the lighting power supply change-over switch and the LED drive circuit are connected with the street lamp, and the commercial power supply circuit is connected with the lighting power supply change-over switch and the main control circuit.
The 3.3V voltage stabilizing circuit is used for supplying power to the main control circuit and the DC3.3V used components.
The photovoltaic panel is used for collecting solar energy.
The photovoltaic input sampling circuit is used for collecting voltage and current signals input by the photovoltaic panel; the photovoltaic input sampling circuit comprises a photovoltaic input voltage sampling circuit and a photovoltaic charging current sampling amplifier, and the photovoltaic input voltage sampling circuit is connected with the main control circuit and is used for collecting voltage signals input by the photovoltaic panel; the photovoltaic input voltage sampling circuit is connected with the photovoltaic charging current sampling amplifier, the photovoltaic charging current sampling amplifier is connected with the main control circuit, and the photovoltaic charging current sampling amplifier is used for amplifying current signals of the photovoltaic panel and then collecting and amplifying the signals to the main control circuit.
The battery charging circuit charges the battery by using the solar energy collected by the photovoltaic panel; the battery charging circuit comprises a charging chip power supply circuit, an MPPT charging circuit and a battery, the charging chip power supply circuit is connected with the MPPT charging circuit and the main control circuit, the photovoltaic panel is connected with the MPPT charging circuit, the MPPT charging circuit is connected with the battery and the main control circuit, and the battery is connected with the battery voltage sampling circuit. The charging chip power supply circuit is used for providing a 24V power supply for the MPPT charging circuit, and the MPPT charging circuit is used for controlling the current and voltage of battery charging.
The battery voltage sampling circuit is used for acquiring a voltage signal of the battery;
the lighting power supply changeover switch is used for switching battery power supply or municipal power supply;
the LED driving circuit is used for driving the lighting circuit;
the commercial power supply circuit is used for providing a municipal power supply;
the master control circuit is used for collecting voltage and current signals of the photovoltaic panel and voltage and current signals of the battery, controlling the power supply circuit of the charging chip to start working according to the voltage and current signals of the photovoltaic panel, and simultaneously controlling the charging power of the MPPT charging circuit so as to achieve the maximum charging efficiency of charging the battery. Controlling a lighting power supply changeover switch to switch between battery power supply and municipal power supply according to a battery voltage signal, and supplying power by using a battery when the battery voltage is higher than a set value; and when the voltage of the battery is lower than a set value, switching to a mains supply circuit for supplying power. And the voltage of the LED driving circuit is controlled according to the instruction, so that the brightness of the street lamp is controlled. And the master control circuit controls the turn-off of the photovoltaic input voltage sampling circuit according to the signal of the battery voltage sampling circuit. When the voltage of the battery voltage sampling circuit reaches the highest value, the main control circuit controls the input voltage of the photovoltaic panel to be disconnected. The main control circuit calculates the battery power according to the battery voltage acquired by the battery voltage sampling circuit, and judges the current power supply mode according to the voltage signal of the municipal power supply signal or the voltage value of the battery voltage sampling circuit.
The street lamp control circuit powered by the combination of solar energy and commercial power also comprises an Internet of things interface circuit,
3.3V voltage stabilizing circuit and thing networking interface circuit are connected, and thing networking interface circuit is connected with master control circuit, and thing networking interface circuit is used for establishing being connected of intelligent terminal and master control circuit, can realize looking over battery power, equipment trouble, current power supply mode etc. in real time on intelligent terminal to and control equipment, including power supply mode switch, street lamp brightness control etc.. The intelligent terminal comprises a computer, a mobile phone and other equipment.
The street lamp control circuit powered by the combination of the solar energy and the mains supply also comprises a functional interface circuit, wherein the functional interface circuit comprises a programming interface circuit and an infrared remote control interface circuit, the programming interface circuit is connected with a main control circuit, and the programming interface circuit is used for burning programs to a main control chip; the infrared remote control interface circuit is connected with the main control circuit and is used for being externally connected with an infrared sensor and utilizing infrared remote control equipment to control the on, off, brightness and the like of the street lamp.
As shown in fig. 2, which is a schematic diagram of a main control circuit of the present invention, an ACC IOUT port is connected to a photovoltaic charging current sampling amplifier to provide a photovoltaic panel current signal for the main control circuit, an ADC VIN1 is connected to a photovoltaic input voltage sampling circuit to provide a photovoltaic panel voltage signal for the main control circuit, an ADC VAC port is connected to a mains supply circuit to provide a municipal voltage signal for the main control circuit, an LEDPW-AC port is connected to a lighting power supply switch to provide a municipal power supply switch, an LEDPW-BT port is connected to a lighting power supply switch to provide a battery power supply switch, a VINSW ON port is connected to an MPPT charging circuit, the main control circuit controls the output power of the MPPT charging circuit, an MPWR ON port is connected to a charging chip power supply circuit to provide a switch for the charging chip power supply circuit, an LED ProctInt port is connected to an LED driving circuit to provide a switch for the LED driving circuit. The IRIN port is connected with the infrared remote control interface circuit and is a switch of the infrared remote control interface circuit, and the LED RUN port is connected with the infrared remote control interface circuit and is an infrared remote control indicator lamp. And the PWM Dim is connected with the LED driving circuit and used for controlling the brightness of the street lamp.
Fig. 3 is a schematic diagram of a municipal power supply circuit and an illumination power supply changeover switch circuit of the invention, a commercial power 12V adapter P6 is connected in parallel with a diode D13 and a capacitor C35 to output 12V power supply voltage, the cathode of the diode D13 is connected with an ADC VAC port of a main control circuit, and the ADC VAC port signal is used for judging whether municipal power supply is adopted. The 12V power supply voltage output by the municipal power supply circuit is connected with MOS tubes Q8 and Q9 of the lighting power supply changeover switch, then the street lamp power supply LED-VCC is output, and the street lamp power supply LED-VCC is connected with the street lamp. The port LEDPW-AC is connected to the PB3 pin of the main control circuit. The + BATT port of the lighting power supply changeover switch is connected with the power supply output of the MPPT charging circuit, the + BATT port is connected with MOS tubes Q4 and Q5 and then outputs a street lamp power supply LED-VCC, and the street lamp power supply LED-VCC is connected with a street lamp. The port LEDPW-BT is connected to the PB4 pin of the main control circuit. The main control circuit controls the port LEDPW-AC or the port LEDPW-BT to be set at a high level according to a battery voltage signal, so that the power supply is switched between the battery power supply and the municipal power supply. In order to prevent the battery voltage from being too low for a long time due to continuous rainy days, a diode D17 and a resistor R57 are connected in series between MOS transistors Q4 and Q5, the 8 th pin of MOS transistor Q5 is connected with the anode of diode D17, the anode of diode D17 is connected with one end of resistor R57, the other end of resistor R57 is connected with the 8 th pin of MOS transistor Q4, and when the battery voltage is too low for a long time, the municipal power supply circuit can slightly charge the battery power supply circuit to protect the battery.
The invention discloses a solar energy and commercial power combined power supply street lamp control method, which comprises the following steps:
step 1: a signal acquisition step:
step 1.1: collecting current and voltage signals of a photovoltaic panel: the photovoltaic input sampling circuit collects voltage and current signals input by a photovoltaic panel; the photovoltaic input voltage sampling circuit collects a voltage signal input by a photovoltaic panel; the photovoltaic charging current sampling amplifier amplifies a current signal of the photovoltaic panel and then acquires an amplified signal to the main control circuit;
step 1.2: collecting a battery voltage signal: collecting a battery voltage signal;
step 1.3: acquiring power supply mode signals: and collecting a voltage signal of a mains supply circuit or a voltage value of a battery voltage sampling circuit.
Step 2: a judging step:
step 2.1: judging the voltage and current intensity of the photovoltaic panel;
step 2.2: and judging the voltage intensity of the battery.
And step 3: the control steps are as follows:
step 3.1: controlling the charging power of the battery: the main control circuit adjusts the charging power of the MPPT charging circuit according to the magnitude of the current and voltage signals of the photovoltaic panel so as to achieve the maximum charging efficiency of the battery;
step 3.2: controlling a power supply switch of the charging chip: the main control circuit controls the power supply circuit of the charging chip to be switched on or off according to the voltage signal of the photovoltaic panel; controlling the power supply circuit of the charging chip to be closed according to the battery voltage signal, and closing the power supply circuit of the charging chip when the battery voltage reaches the maximum value;
step 3.3: lighting power supply change-over switch control: the main control circuit controls the switching of the lighting power supply switch according to the voltage of the battery, and when the voltage of the battery is higher than a set value, the battery is adopted for supplying power; when the voltage of the battery is lower than a set value, the municipal power supply is switched;
step 3.4: LED brightness control: the main control circuit controls the brightness of the street lamp according to the program instruction.
And 4, step 4: data transmission: the intelligent terminal realizes information interaction and remote control with the main control circuit through the Internet of things interface.
And 5: infrared control: the infrared remote controller controls the main control circuit through the infrared interface circuit, and comprises a power supply switching mode and a street lamp brightness adjusting mode.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1.一种太阳能和市电组合供电的路灯控制电路，其特征在于，包括光伏板、主控电路、光伏输入采样电路、电池充电电路、电池电压采样电路、照明供电切换开关、市电供电电路和LED驱动电路，所述光伏板连接电池充电电路，所述光伏输入采样电路连接光伏板和主控电路，所述电池充电电路连接照明供电切换开关、主控电路和电池电压采样电路，所述电池电压采样电路连接主控电路，所述主控电路连接照明供电切换开关和LED驱动电路，所述照明供电切换开关和LED驱动电路连接路灯，所述市电供电电路连接照明供电切换开关；1. a street lamp control circuit powered by a combination of solar energy and commercial power, is characterized in that, comprising photovoltaic panel, main control circuit, photovoltaic input sampling circuit, battery charging circuit, battery voltage sampling circuit, lighting power supply switch, commercial power supply circuit and LED drive circuit, the photovoltaic panel is connected to the battery charging circuit, the photovoltaic input sampling circuit is connected to the photovoltaic panel and the main control circuit, the battery charging circuit is connected to the lighting power supply switch, the main control circuit and the battery voltage sampling circuit, the The battery voltage sampling circuit is connected to the main control circuit, the main control circuit is connected to the lighting power supply switch and the LED drive circuit, the lighting power supply switch and the LED drive circuit are connected to the street lamp, and the commercial power supply circuit is connected to the lighting power supply switch; 所述光伏板用于采集太阳能；The photovoltaic panel is used for collecting solar energy; 所述光伏输入采样电路用于采集光伏板输入的电压和电流信号；The photovoltaic input sampling circuit is used to collect voltage and current signals input by the photovoltaic panel; 所述电池充电电路利用光伏板采集的太阳能给电池进行充电；The battery charging circuit uses the solar energy collected by the photovoltaic panel to charge the battery; 所述电池电压采样电路用于采集电池的电压大小信号；The battery voltage sampling circuit is used to collect the voltage magnitude signal of the battery; 所述照明供电切换开关用于切换电池供电或市政供电；The lighting power supply switch is used for switching battery power supply or municipal power supply; 所述LED驱动电路用于驱动照明电路；The LED driving circuit is used for driving a lighting circuit; 所述市电供电电路用于提供市政电源；The mains power supply circuit is used to provide municipal power; 所述主控电路用于采集光伏板电压电流信号、电池电压信号，并根据光伏板电压电流信号控制充电芯片供电电路开始工作，同时控制电池充电电路的充电功率，并根据电池电压信号控制照明供电切换开关在电池供电和市政供电之间切换。The main control circuit is used to collect photovoltaic panel voltage and current signals and battery voltage signals, and control the charging chip power supply circuit to work according to the photovoltaic panel voltage and current signals, control the charging power of the battery charging circuit at the same time, and control the lighting power supply according to the battery voltage signal. A toggle switch toggles between battery power and municipal power. 2.根据权利要求1所述的太阳能和市电组合供电的路灯控制电路，其特征在于，包括3.3V稳压电路，所述3.3V稳压电路连接主控电路，3.3V稳压电路用于给主控电路及用到DC3.3V的元器件供电。2. The street lamp control circuit powered by the combination of solar energy and mains electricity according to claim 1, characterized in that it comprises a 3.3V voltage stabilizer circuit, the 3.3V voltage stabilizer circuit is connected to a main control circuit, and the 3.3V voltage stabilizer circuit is used for Supply power to the main control circuit and components that use DC3.3V. 3.根据权利要求1所述的太阳能和市电组合供电的路灯控制电路，其特征在于，所述光伏输入采样电路包括光伏输入电压采样电路和光伏充电电流采样放大器，所述光伏输入电压采样电路连接主控电路，用于采集光伏板输入的电压信号；所述光伏输入电压采样电路连接光伏充电电流采样放大器，光伏充电电流采样放大器连接主控电路，所述光伏充电电流采样放大器用于将光伏板的电流信号进行放大后采集放大信号到主控电路。3. The street lamp control circuit powered by a combination of solar energy and commercial power according to claim 1, wherein the photovoltaic input sampling circuit comprises a photovoltaic input voltage sampling circuit and a photovoltaic charging current sampling amplifier, and the photovoltaic input voltage sampling circuit Connect to the main control circuit for collecting the voltage signal input by the photovoltaic panel; the photovoltaic input voltage sampling circuit is connected to the photovoltaic charging current sampling amplifier, the photovoltaic charging current sampling amplifier is connected to the main control circuit, and the photovoltaic charging current sampling amplifier is used for the photovoltaic charging current sampling amplifier. After the current signal of the board is amplified, the amplified signal is collected and sent to the main control circuit. 4.根据权利要求1所述的太阳能和市电组合供电的路灯控制电路，其特征在于，所述电池充电电路包括充电芯片供电电路、MPPT充电电路和电池，所述充电芯片供电电路连接MPPT充电电路和主控电路，所述光伏板连接MPPT充电电路，所述MPPT充电电路连接电池和主控制电路，所述电池连接电池电压采样电路；所述充电芯片供电电路用于给MPPT充电电路提供电源，所述MPPT充电电路用于控制电池充电的电流电压大小。4. The street lamp control circuit powered by a combination of solar energy and commercial electricity according to claim 1, wherein the battery charging circuit comprises a charging chip power supply circuit, an MPPT charging circuit and a battery, and the charging chip power supply circuit is connected to the MPPT charging circuit circuit and main control circuit, the photovoltaic panel is connected to the MPPT charging circuit, the MPPT charging circuit is connected to the battery and the main control circuit, the battery is connected to the battery voltage sampling circuit; the charging chip power supply circuit is used to provide power to the MPPT charging circuit , the MPPT charging circuit is used to control the current and voltage of battery charging. 5.根据权利要求1所述的太阳能和市电组合供电的路灯控制电路，其特征在于，当电池电压高于设定值则采用电池进行供电；当电池电压低于设定值，主控电路切换到市电电路供电；所述主控电路根据指令控制LED驱动电路的电压，从而控制路灯的亮度；所述主控电路根据电池电压采样电路的信号控制光伏输入电压采样电路的关断；当电池电压采样电路的电压达到最高值，主控电路控制光伏板输入电压断开；所述主控电路根据电池电压采样电路采集的电池电压大小计算电池电量，所述市电供电电路连接主控电路；所述主控电路根据市政供电信号的电压信号或电池电压采样电路的电压值判断当前供电模式。5. The street lamp control circuit powered by the combination of solar energy and mains electricity according to claim 1, characterized in that, when the battery voltage is higher than the set value, the battery is used for power supply; when the battery voltage is lower than the set value, the main control circuit Switch to the mains circuit to supply power; the main control circuit controls the voltage of the LED drive circuit according to the instruction, thereby controlling the brightness of the street lamp; the main control circuit controls the photovoltaic input voltage sampling circuit to turn off according to the signal of the battery voltage sampling circuit; when When the voltage of the battery voltage sampling circuit reaches the highest value, the main control circuit controls the input voltage of the photovoltaic panel to disconnect; the main control circuit calculates the battery power according to the battery voltage collected by the battery voltage sampling circuit, and the mains power supply circuit is connected to the main control circuit ; The main control circuit judges the current power supply mode according to the voltage signal of the municipal power supply signal or the voltage value of the battery voltage sampling circuit. 6.根据权利要求2所述的太阳能和市电组合供电的路灯控制电路，其特征在于，包括物联网接口电路，所述3.3V稳压电路与物联网接口电路连接，所述物联网接口电路与主控电路连接，所述物联网接口电路用于建立智能终端与主控电路的连接。6. The street lamp control circuit powered by the combination of solar energy and mains electricity according to claim 2, characterized in that it comprises an Internet of Things interface circuit, the 3.3V voltage regulator circuit is connected with the Internet of Things interface circuit, and the Internet of Things interface circuit It is connected with the main control circuit, and the Internet of Things interface circuit is used to establish the connection between the intelligent terminal and the main control circuit. 7.根据权利要求1所述的太阳能和市电组合供电的路灯控制电路，其特征在于，包括功能接口电路，所述功能接口电路包括编程接口电路和红外遥控接口电路，所述编程接口电路连接主控电路，所述编程接口电路用于烧录程序到主控芯片；所述红外遥控接口电路连接主控电路，所述红外遥控接口电路用于外接红外传感器。7. The street lamp control circuit powered by the combination of solar energy and mains electricity according to claim 1, characterized in that it comprises a functional interface circuit, and the functional interface circuit comprises a programming interface circuit and an infrared remote control interface circuit, and the programming interface circuit connects The main control circuit, the programming interface circuit is used for programming the program to the main control chip; the infrared remote control interface circuit is connected to the main control circuit, and the infrared remote control interface circuit is used to connect an infrared sensor. 8.一种利用如权利要求1-7任一项所述的太阳能和市电组合供电的路灯控制电路进行路灯供电控制的方法，其特征在于，包括如下步骤：8. a method utilizing the street lamp control circuit powered by the combination of solar energy and mains electricity as claimed in any one of claims 1-7 to carry out street lamp power supply control, is characterized in that, comprises the steps: 步骤1：信号采集步骤：Step 1: Signal Acquisition Steps: 步骤1.1：光伏板电流电压信号采集：光伏输入采样电路采集光伏板输入的电压和电流信号；Step 1.1: Photovoltaic panel current and voltage signal acquisition: The photovoltaic input sampling circuit collects the voltage and current signals input by the photovoltaic panel; 步骤1.2：电池电压信号采集：采集电池电压大小信号；Step 1.2: battery voltage signal acquisition: collect battery voltage signal; 步骤2：判断步骤：Step 2: Judgment Step: 步骤2.1：光伏板电压电流强度判断；Step 2.1: Judging the voltage and current intensity of photovoltaic panels; 步骤2.2：电池电压强度判断；Step 2.2: Judgment of battery voltage strength; 步骤3：控制步骤：Step 3: Control Steps: 步骤3.1：电池充电功率控制：主控电路根据光伏板电流电压信号大小调节电池充电电路的充电功率；Step 3.1: Battery charging power control: the main control circuit adjusts the charging power of the battery charging circuit according to the current and voltage signals of the photovoltaic panel; 步骤3.2：充电芯片供电开关控制：主控电路根据光伏板电压信号控制充电芯片供电电路开或关；根据电池电压信号控制充电芯片供电电路关闭，当电池电压达到最大值，关闭充电芯片供电电路；Step 3.2: Charging chip power supply switch control: the main control circuit controls the charging chip power supply circuit to turn on or off according to the photovoltaic panel voltage signal; control the charging chip power supply circuit to close according to the battery voltage signal, when the battery voltage reaches the maximum value, close the charging chip power supply circuit; 步骤3.3：照明供电切换开关控制：主控电路根据电池电压大小控制照明供电切换开关的切换，当电池电压高于设定值时，采用电池进行供电；当电池电压低于设定值，切换到市政供电。Step 3.3: Lighting power supply switch control: The main control circuit controls the switching of the lighting power supply switch according to the battery voltage. When the battery voltage is higher than the set value, the battery is used for power supply; when the battery voltage is lower than the set value, it switches to Municipal electricity. 9.根据权利要求8所述的太阳能和市电组合供电的路灯供电控制方法，其特征在于，所述步骤1包括供电模式信号采集：采集市电供电电路的电压信号或电池电压采样电路的电压值；所述步骤3包括LED亮度控制：主控电路根据程序指令控制路灯亮度。9 . The street lamp power supply control method powered by the combination of solar energy and mains electricity according to claim 8 , wherein the step 1 includes power supply mode signal collection: collecting the voltage signal of the mains power supply circuit or the voltage of the battery voltage sampling circuit. 10 . The step 3 includes LED brightness control: the main control circuit controls the street lamp brightness according to program instructions. 10.根据权利要求8所述的太阳能和市电组合供电的路灯供电控制方法，其特征在于，包括步骤4：数据传输：智能终端通过物联网接口与主控电路实现信息交互和远程控制；10. The street lamp power supply control method according to claim 8, characterized in that it comprises step 4: data transmission: the intelligent terminal realizes information exchange and remote control through the Internet of Things interface and the main control circuit; 步骤5：红外控制：红外遥控器通过红外接口电路对主控电路进行控制，包括切换供电模式和调节路灯亮度。Step 5: Infrared control: The infrared remote control controls the main control circuit through the infrared interface circuit, including switching the power supply mode and adjusting the brightness of the street light.
CN202210218459.3A 2022-03-08 2022-03-08 Street lamp control circuit and method powered by combination of solar energy and mains supply Pending CN114567066A (en)

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