Abstract
Infrared remote control is one kind Transmit which is widely used in daily life. The infrared wireless technology has solved a lot of inconvenience in the wired connection, so it provides a lot of convenience in our lives. With the rapid development of electronic technology, various kinds of small portable products with strong function emerge constantly. For example, it could be used for controlling the bauble of small-scale automobile, examining body temperature, infrared remote controlling DVD or VCD and etc. This design is to implement a power supply switch with infrared remote controlling. It includes five parts: Infrared emission, infrared receiving, buzzer,ray coincidence and number showing. The essential principles of this system is that use the currency remote device to transmit infrared ray signal, and emitting the signal to the infrared receiveing diode by the diode of infrared emission. Then utilizing CM8870 to decode, and controlling the switch and time of the electric light with AT89C51 one-chip computer. After the function is realized, it can display time on the number showing correctly, and can adjust time through the infrared controlling.
This system is practical and has many kinds of flexible functions. It not only has the function of switch of the power supply, but also can control and adjust the state of the controlled objects in the long distance, and can be widely used in various kinds of switch of the power supply in indoor wiring.
Key words: Infrared emission;Infrared receive;Code;Decode;Infrared remote control;Dual Tone Multi-Frequency;One-chip computer;The number showing;power supply; buzzer; ray coincidence;