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Remote control system for domestic lighting circuit - using modulated infrared beam transmitted between light emitting diode and photodiode to eliminate switch wiring
Remote control system for domestic lighting circuit - using modulated infrared beam transmitted between light emitting diode and photodiode to eliminate switch wiring
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机译:家用照明电路的遥控系统-使用在发光二极管和光电二极管之间传输的调制红外光束消除开关接线
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摘要
The system uses an IR beam provided by an autonomous battery-operated transmitter. This uses a LED providing an IR beam modulated between 25 and 200 kilohertz. The receiver associated with the lighting circuit is supplied from the mains network and uses a planar photodiode, the receiver controlling a switching triac via a bistable circuit. Pref. the photodiode is coupled to an IR filter and via an amplifier to a bandpass filter turned to the transmission range. This is followed by a further amplifier and a frequency discriminator, with a threshold output amplifier for eliminating noise.
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