1. infrared emission control, also known as infrared emitting diode, it belongs to two Tube can be directly converted into electrical energy near-infrared lightAnd a light emitting device can radiate out, its structure, with the general principle of the light emitting diode similar, but with a semiconductor Different materials;
2. the infrared receiver is set to receive, amplify, demodulate one of the devices, which has been completed within the demodulation IC output Is a digital signal;
3, the principle of infrared communication.Let's look at the structure of the infrared receiver: infrared receiver inside there are two important elements, namely the IC andPD. IC is a receiver processing elements, mainly composed of silicon crystals and circuits, is a highly integrated device, the main To function as a filter, shaping, decoding, zoom and other functions. Photodiode PD is, the main function is to receive the optical signal Number.
The following is a brief schematic work The modulated infrared emitting diode signal emitted, infrared receiver after receiving, decoding, filtering, and a series of operations After the signal for recovery;
4 Notes
infrared emitting diodes: clean, good condition; various parameters during operation must not exceed limit values (positive To the current mA, Pulse Forward Current A, reverse voltage 5 V, power dissipation 90 mW, the working temperature Range -storage temperature range of -soldering temperature of 260?) infrared emission tube and then Closed head should be paired with, otherwise it will affect the sensitivity;
Isi paket:
1 pce KY-005 Infrared Transmitter Module untuk Arduino AVR PIC Raspberry.