PWM (Pulse-Width Modulation) dimming LED (Light Emitting Diode) road lamp controller based on Zigbee

Abstract

The invention relates to a PWM (Pulse-Width Modulation) dimming an LED (Light Emitting Diode) road lamp controller based on Zigbee and is mainly used for controlling a road lamp as well as discovering and solving failure problems in time. The PWM dimming the LED road lamp controller comprises an LED lamp, a power supply module, a wireless sensing module, a control module, a base station and a computer, wherein the power supply module comprises a power supply control chip, an input power supply, a booster circuit and a constant-current output circuit; the control module comprises a PWM wave generator, an illumination intensity acquisition sensor, a failure feedback module and an executing node; the input power supply adopts a constant-current power supply of an LED solar energy road lamp; the control module is connected with the base station through a Zigbee wireless sensor network; and the base station is connected with the computer. The PWM dimming the LED road lamp controller is used for supplying power through environment-friendly solar energy and collecting long-distance illumination intensity through the Zigbee wireless sensor network; and PWM waves can be used for controlling luminance variation of each road lamp and receiving failure alarm signals of each road lamp.

Description

technical field [0001] The invention relates to a Zigbee-based PWM dimming LED street lamp controller, which is mainly used for controlling street lamps, and can detect and solve faults in time. Background technique [0002] At present, most street lamps in my country still use traditional fluorescent lamps for night lighting. The power supply generally uses 220V mains lighting instead of environmentally friendly new energy sources, which cannot alleviate the difficulty of power shortage in our country. Traditional street lights do not have the function of collecting light intensity. The whole process from lighting up at night to turning off in the morning uses the same brightness, and corresponding dimming control cannot be performed. Especially in the dead of night, traditional street lamps cannot reduce the brightness to a certain extent, but keep the original brightness, resulting in relatively large power consumption. Moreover, the timeliness of fault maintenance of tr...

AI Technical Summary

Problems solved by technology

[0002] At present, most street lamps in my country still use traditional fluorescent lamps for night lighting. The power supply generally uses 220V mains lighting instead of environmentally friendly new energy sources, which cannot alleviate the difficulty of power shortage in my country.

Traditional street lights do not have the function of collecting light intensity. The whole process from lighting up at night to turning off in the morning uses the same brightness, and corresponding dimming control cannot be performed.

Especially in the dead of night, traditional street lamps cannot reduce the brightness to a certain extent, but keep the original brightness, resulting in a relatively large power consumption.

Moreover, the timeliness of fault maintenance of traditional street lamps is lagging. The maintenance personnel cannot quickly know the location of the fault. It often takes several days to receive the failure of a street lamp on a certain road. Seriously detrimental to the normal life of residents

To sum up, the current street lamps have disadvantages or deficiencies such as the power supply is not environmentally friendly, not energy-saving, and inconvenient for fault maintenance.

[0003] At present, there are also some controllers to control street lamps, such as Chinese patent application number: 200910105775.4, which discloses a LED street lamp controller. Although a PWM dimming device is also used, the power supply is still a commonly used power supply, and it has not fundamentally played a role. In addition, the controller has no fault system, and the street lamp is very easy to damage, so it is not convenient in maintenance

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