smart switch panel for led lamps

Abstract

The invention discloses an intelligent switch panel for an LED lamp. The intelligent switch panel comprises a current detection circuit, a thyristor, a control module, a dynamic current maintaining circuit, a zero cross detection circuit and an ambient light brightness induction module, wherein a central processing module for controlling a capacitive touch screen assembly is electrically connected with the control module; the ambient light brightness induction module is connected to the central processing module; the current detection circuit and the thyristor are connected between an LED fire line connection terminal and an electric supply fire line connection terminal in series; a zero line connection terminal and the LED fire line connection terminal are connected with a thyristor starting current circuit and a dynamic current maintaining circuit in parallel; and whether the dynamic current maintaining circuit is enabled or not is dynamically adjusted according to a detection current signal from the current detection circuit. According to the intelligent switch panel, the condition that current which flows through the control module flows through an LED lamp is avoided; the phenomenon that the originally controlled LED lamp flickers or cannot be turned off is avoided; and the problem that the thyristor is unexpectedly conducted due to bearing over-high counter electromotive force in a current switching process is solved.

Description

technical field [0001] The invention relates to the technical field of power switches, in particular to an intelligent switch panel for LED lamps. Background technique [0002] LED lamps are widely used due to their advantages of low power consumption, energy saving, and shock resistance. The control switches of LED lamps have also been developed from traditional buttons to touch switches. However, the existing touch switches of LED lamps can only control the Turning on and off only considers lighting, and cannot adjust the brightness of LED lights through switches, which cannot meet the needs of more people; for example, the brightness of LED lights cannot be set according to seasons and changes in illuminance. [0003] However, the existing touch switch panel, on the one hand, LED lamps cannot be well adapted to traditional thyristor dimmers, because most LED lamps have a built-in switching power supply and are driven by the switching power supply, and the switching power ...

AI Technical Summary

Problems solved by technology

[0002] Due to the advantages of low power consumption, energy saving, and shock resistance, LED lamps are widely used. The control switch of LED lamps has also been developed from traditional buttons to touch switches, but the existing LED lamp touch switches can only control the LED lights. On and off, only considering the lighting, the brightness of the LED light cannot be adjusted through the switch, which cannot meet the needs of more people; for example, the brightness of the LED light cannot be set according to the season and the change of illuminance

[0003] However, the existing touch switch panels, on the one hand, LED lamps cannot be well adapted to the traditional thyristor dimmers, because most LED lamps have a built-in switching power supply and are driven by this switching power supply, and the switching power supply The current is usually discontinuous, that is, there will be hundreds to thousands of current discontinuities in one cycle of alternating current. Even if the current is continuous, the current at the bottom of the current is often not enough to maintain the normal conduction of the thyristor. , when the power of the LED lamp is low or the current of the high-power LED lamp is dimmed through the thyristor, it is especially obvious, because the current flowing through the thyristor is less than the current that keeps it on. The thyristor will be turned off accidentally, only It can only be turned on again when it is triggered next time. When the current is too small or even not enough to make the SCR be triggered and turned on, the phenomenon of abnormal brightness and flickering of the LED light will appear; on the other hand, there are currently digital dimmer switches , the existing dimmer switch is controlled by a single-chip microcomputer, and is completely connected in series with the lamp to form a power supply circuit. In order to make the light switch and dim smoothly, the single-chip microcomputer must maintain normal power supply, and the current flowing through the control circuit It will flow through the bulb, tens of milliamps of current is not enough to light up the traditional incandescent lamp, but it may be lit up for the LED lamp, so the LED lamp that was originally controlled will flicker or cannot be turned off

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