Full-bright and semi-bright energy-saving street lamp employing infrared detection for landscape area

Abstract

The invention provides a full-bright and semi-bright energy-saving street lamp employing infrared detection for a landscape area. The full-bright and semi-bright energy-saving street lamp is characterized by comprising a 9V half-wave rectifying and voltage stabilizing power supply, an infrared probe and infrared signal amplifying circuit, a voltage comparison circuit, a level signal amplifying delay circuit and a filament lamp drive circuit; the infrared probe and infrared signal amplifying circuit comprises a pyroelectric infrared probe IC1, an electrolytic capacitor C1, an NPN-type transistor VT1 and a resistor R2; and the model number of the pyroelectric infrared probe IC1 is LN074B. In order to solve the problem of energy waste of ordinary street lamps in public places of a park, a garden, a river lake landscape area and the like, the pyroelectric infrared probe is adopted; a weak signal received by the infrared probe is amplified; and the street lamp is driven. The street lamp is automatically lighted when pedestrians approach, and is gradually converted into a semi-bright state from a full-bright state by delaying a period of time after the pedestrians are away from the street lamp a distance, so that power resources can be effectively saved.

Description

technical field [0001] The invention belongs to the field of electronic control technology and energy-saving technology, and relates to an energy-saving street lamp with full-brightness and half-brightness with delayed infrared detection in a landscape area. Background technique [0002] Now many roads in public places such as parks, gardens, rivers and lakes landscape areas are equipped with various lighting street lights to facilitate tourists and pedestrians to play or watch. Every night, all the lighting street lights in these public places are turned on, which is really convenient when there are many tourists, but in the dead of night when there are few tourists or few tourists, it is impossible to turn off all the lighting street lights. They all work all night and all night, which causes a great waste of energy. [0003] In order to overcome the problem of wasting energy in ordinary street lamps in public places such as parks, gardens, rivers and lakes, this inventio...

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Problems solved by technology

[0005] Purpose and beneficial effect of the invention: In order to overcome the problem of wasting energy in common street lamps in public places such as parks, gardens, rivers and lakes, the present invention uses a pyroelectric infrared probe to amplify the weak signal received by the infrared probe, and then drives the street lamp

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