Automatic control circuit for sightseeing elevator car illumination

Abstract

The invention discloses an automatic control circuit for sightseeing elevator car illumination. The automatic control circuit comprises a full wave phase control circuit, a driving circuit and a trigger tube; the full wave phase control circuit comprises a bridge rectifier unit and a control unit; the bridge rectifier unit includes two input ends and two output ends; one input end is connected tothe mains supply, and the other input end is connected to the mains supply via an illuminating lamp; the control unit is connected between the two output ends and is provided with a control end; the driving circuit comprises a first unit and a second unit which are connected between the two output ends in parallel; the first unit comprises a charging element and the second unit comprises a photosensitive element; two ends of the trigger tube are respectively connected to the control end and one end of the charging element; the resistance value of the photosensitive element changes along with the light brightness, so that the charging voltage of the charging element is changed; and the charging voltage is loaded on the control end through the trigger tube so that the average conduction timeof the control unit can be changed, so that the average value of the pulsed voltage loaded on the illuminating lamp is changed, so as to adjust the brightness of the illuminating lamp and achieve theeffects of intelligent control, energy saving and electricity saving.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an automatic control circuit for car lighting of a sightseeing elevator for automatically adjusting brightness. Background technique [0002] An elevator is a transportation device powered by a motor that serves a specific floor in a building, and is used for multi-storey buildings to take people or carry goods. Among them, sightseeing elevators are mainly installed in hotels, shopping malls, high-rise office buildings, etc., and have at least one shaft wall and car wall made of transparent materials, so that passengers can watch the scenery outside the car when taking the elevator. [0003] Usually, the lighting device installed in the elevator car enters a full-brightness state after the elevator runs normally, and the lighting device in the car will be automatically turned off only after the elevator stops running and reaches a preset duration. However, for sightseeing elev...

AI Technical Summary

Problems solved by technology

However, for sightseeing elevators, when the external light is good, the lighting device in the car does not need to enter a full-bright state at all, so the existing lighting method will cause a lot of waste of electricity and electricity costs in sightseeing elevators, and then lead to wasted energy

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