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The Basic Principle Of Infrared Remote Control

- Feb 21, 2018 -

Infrared light emitting diode (ir) is used to emit infrared light. The infrared receiving circuit consists of an infrared receiving diode, a triode or a silicon photocell, which converts infrared light emitted by the infrared emitter into the corresponding electrical signal, and then the amplifier.

Transmitter generally consists of instruction key (or operation bar), instruction coding system, modulation circuit, driving circuit, transmitting circuit, etc. When press the command key or push the lever, the instruction encoding circuit to produce the required instruction coding signal, instruction encoding of carrier modulation signal, and then by the driving circuit for power amplifier circuit to the launch after launch by the set of instructions coded signal.

The receiving circuit is generally composed of receiving circuit, amplifying circuit, modulation circuit, command decoding circuit, driving circuit and actuator. Receiving circuit the emitter signal modulated encoding instructions received, and enlarged demodulation circuit, demodulation circuit will have instruction coding modulation signal demodulation, the reduction of coded signal. The instruction decoder decodes the encoded instruction signal and finally drives the execution circuit to realize the operation control of various instructions by the driving circuit.

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