CN102811541A - Intelligent Street Light Control System - Google Patents

Abstract

The invention discloses a functional module of an intelligent street lamp control system, which comprises a central control unit, a battery assembly connected with the central control unit, an LED light source module, a solar panel and a PWM dimming time control power supply connected with the central control unit, wherein the output end of the PWM dimming time control power supply is connected with the LED light source module, and the solar panel is simultaneously connected with the central control unit and the battery assembly; the battery pack is matched with the solar panel for power supply, the central control unit controls the PWM dimming time control power supply to dim light for the LED light source module, the solar panel can convert solar energy in the daytime into electric energy to supply power for the street lamp and store the electric energy into the battery, and non-renewable energy is saved. The light control mode of the invention is flexible and changeable and adjustable, can effectively adapt to road sections with various street lamp lighting requirements, and further makes contribution to energy conservation and emission reduction.

Description

Intelligent Street Light Control System

technical field

The invention relates to a street lamp control system, in particular to an intelligent street lamp control system for LED outdoor lighting.

Background technique

In today's world, the concept of energy conservation and environmental protection has long been deeply rooted in the hearts of the people. Major energy consuming countries in the world have issued government announcements and roadmaps for the elimination of incandescent lamps. LED, as a new generation of alternative lighting sources, has emerged in various lighting applications, and its market share has risen sharply. Major cities in my country first launched LED street lamp projects, but in terms of street lamp control, it is only a simple integrated step-down, which cannot meet the flexible and objective lighting requirements caused by changes in the flow of vehicles and people on the road at night. The energy-saving effect is average, and it cannot be intelligent Standard for street light control.

Contents of the invention

The technical problem to be solved by the present invention is to provide an intelligent street lamp control system with obvious energy-saving effect and high flexibility.

In order to solve the above technical problems, the technical solution adopted by the present invention is: an intelligent street lamp control system, including a central control unit, a battery assembly, and an LED light source module, and the battery assembly is connected to the central control unit, which is characterized in that:

It also includes a PWM dimming time-controlled power supply connected to the central control unit, the output end of the PWM dimming time-controlled power supply is connected to the LED light source module, and the PWM dimming time-controlled power supply includes ten light control modes for adjusting the intensity of the LED light source;

The central control unit includes a microprocessor MCU, and a DC/DC conversion module, a system programming ISP, and a digital display respectively connected to the MCU.

Further, the intelligent street lamp control system also includes a solar panel, and the solar panel is connected to the central control unit and the battery assembly at the same time.

Further, the PWM dimming time-controlled power supply includes at least three step-down constant current sources.

Beneficial effects of the present invention: the intelligent street lamp control system introduces PWM dimming, ISP editable mode, this experiment is equipped with ten typical light control modes in the MCU, which can effectively adapt to various street lighting requirements; the street lamp power supply device adopts batteries The components work with the solar panels to supply power, converting the solar energy during the day into electricity to power street lights and store it in batteries, saving non-renewable energy.

Description of drawings

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a functional block diagram of the intelligent street lamp control system of the present invention;

Fig. 2 is the schematic block diagram of the circuit of the intelligent street lamp control system of the present invention;

Fig. 3 is a circuit diagram of the central control unit of the intelligent street lamp control system;

Fig. 4 is a circuit diagram of the PWM dimming time-controlled power supply of the intelligent street lamp control system.

Detailed ways

Figure 1 shows the functional modules of the intelligent street lamp control system, including a central control unit 1, a battery assembly 2, an LED light source module 3, a solar panel 5, a PWM dimming time-controlled power supply 4 connected to the central control unit, and a PWM dimming The output end of the time-controlled power supply 4 is connected to the LED light source module 3, and the solar panel 5 is connected to the central control unit 1 and the battery assembly 2 at the same time; the battery assembly 2 cooperates with the solar panel 5 to supply power, and the central control unit 1 controls the PWM dimming time control The power supply 4 adjusts the light of the LED light source module 3, and the solar panel 5 can convert the solar energy in the daytime into electric energy to supply power to the street lamps and store it in the battery, saving non-renewable energy.

Fig. 2 is the circuit principle block diagram of the specific embodiment of the present invention, and central control unit 1 comprises microprocessor MCU11, and the DC/DC conversion module 12 that links to each other with MCU11, system programming ISP13, digital display 14; DC/DC conversion module 12 Convert the electric energy of the solar panel 5 and the battery assembly 2 to the street lamp control system. The system programming ISP13 writes the light control program and writes it into the MCU11. The light control program is implemented in the PWM dimming control power supply 4 and displayed on the display formed by the digital display tube. 14, this embodiment includes ten light control modes such as 0-9:

Mode 0: 5h, 100% grayscale -> 2h, 70% grayscale -> 2h, 50% grayscale -> 30% to rated off time point;

Mode 1: 6h, 100% gray scale -> 50% to rated off time point;

Mode 2: 4h, 100% gray scale -> 30% to rated off time point;

Mode 3: 4h, 100% grayscale -> 2h, 70% grayscale -> 30% to rated closing time;

Mode 4: 7h, 100% gray scale -> 60% to rated off time point;

Mode 5: 6h, 100% grayscale -> 2h, 50% grayscale -> 30% to rated closing time;

Mode 6: 7h, 100% grayscale -> 2h, 30% grayscale -> 70% to rated closing time;

Mode 7: 3h, 100% gray scale -> 40% to rated off time point;

Mode 8: 3h, 100% grayscale -> 70% to rated off time point;

Mode 9: 5h, 100% grayscale -> 2h, 70% grayscale -> 2h, 40% grayscale -> 70% to rated off time point.

Figure 3 is a circuit diagram of the central control unit of the intelligent street lamp control system. The DC/DC conversion module 12 is composed of a power management chip TD1507, two Schottky diodes SS26, capacitors C1, C2, C3, and inductor L2 connected in series and in parallel, and the DC24V Converted to DC5V; the input and output terminals RXD and TXD of the system programming ISP13 are connected to the corresponding interface of the MCU; the core component of the microprocessor MCU11 is a single-chip microcomputer STC11F02E, and there are three PWM dimming output terminals PWM1, PWM2, PWM3, corresponding to PWM dimming Control the three step-down constant current source PWM input terminals of the power supply 4 to adjust the high and low level duty cycle of the input voltage signal of the LED light source module 3, for example, in the light source mode, the gray scale is 70%, that is, the high and low level duty cycle is 70: 30. The right side of MCU11 is connected with digital display 14, and digital display 14 is made up of several nixie tubes, and can display the light control mode that ISP13 writes into MCU11. It can be seen that the light control mode of the present invention is flexible and adjustable, and can effectively adapt to road sections with various street lighting requirements.

Figure 4 is a circuit diagram of the PWM dimming time-controlled power supply of the intelligent street lamp control system. The PWM dimming time-controlled power supply (4) of this embodiment includes three step-down constant current sources MT7201, capacitors C4 and C5, inductor L1, and Schottky diodes SS26, resistor R1, external LED light string.

The above descriptions are only preferred implementations of the present invention, and the present invention is not limited to the above-mentioned implementations, as long as the technical solutions that achieve the purpose of the present invention by basically the same means fall within the protection scope of the present invention.

Claims (3)

1. Intelligent street lamp control system, including central control unit (1), battery assembly (2), LED light source module (3), battery assembly (2) connected with central control unit (1), characterized in that: It also includes a PWM dimming time-controlled power supply (4) connected to the central control unit, the output end of the PWM dimming time-controlled power supply (4) is connected to the LED light source module (3), and the PWM dimming time-controlled power supply (4) includes Ten light control modes to adjust the intensity of the LED light source; The central control unit includes a microprocessor MCU (11), a DC/DC conversion module (12), a system programming ISP (13), and a digital display (14) respectively connected to the MCU (11). 2. The intelligent street lamp control system according to claim 1, characterized in that: the intelligent street lamp control system also includes a solar panel (5), and the solar panel (5) is simultaneously connected with the central control unit (1), the battery assembly (2 ) connected. 3. The intelligent street lamp control system according to claim 1, characterized in that: the PWM dimming time-controlled power supply (4) includes at least three step-down constant current sources.

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