Full-brightness and semi-brightness control method for incandescent lamp

• Main Authors: YE QUANFENG, JI GANGTIE, YAN DINGHONG, ZHENG HAIRUI, ZHUANG WEIRONG, HUANG LINGJUN, ZHANG HAIBIN, LI RONGCHANG
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2019
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The invention provides a full-brightness and semi-brightness control method for an incandescent lamp. The full-brightness and semi-brightness control method comprises the following steps: detecting apower frequency signal; identifying a power voltage; judging a zero crossing moment; judging whether the lamp is turned on or not; and judging whether the lamp is fully bright or not. A power frequency inductor is used for detection, and a power frequency detection signal is provided; the power frequency inductor comprises four modules, namely, a single-chip microcomputer control module, a power module, a gating module, an amplification shaping module and a frequency division module; and a single-chip microcomputer serves as a control core to complete counting and decoding of to-be-tested signals and control on a frequency division ratio. The method is suitable for full-brightness and semi-brightness control of the incandescent lamp; the core is that a silicon controlled rectifier triggering moment is selected nea