40 results about "Brightness induction" patented technology

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.

The invention relates to a replaceable signboard and a replacement method thereof, comprising a column, a signboard body, a control system is arranged in the signboard body, and the control system includes a control terminal, an ambient brightness sensing module, an ambient brightness threshold database, a time period calculation module, a comparison module and information transmission module; the ambient brightness threshold database provides the brightness reference threshold corresponding to the first time period of the day; When the brightness reference threshold of a period of time, the LED lamp is in the low brightness stage, and when the ambient brightness of the sign body is greater than the brightness reference threshold of the first period of time and less than the brightness reference threshold of the second period of time, the LED lamp is in the off stage, and the sign body When the brightness of the surrounding environment is less than the brightness reference threshold of the third time period, the LED lamp is in a high brightness stage; the invention can automatically turn on or off the LED lamp in real time, so as to illuminate the signboard.