ABSTRACT
With the development of science and technology, SCM because of its high reliability and cost-effective, in the intelligent home appliances, instrumentation and many other areas has been very widely used. Control of the current SCM appliances shown on the simplistic appearance, diversification of function, the development trend of superior performance. Infrared remote control apparatus with easy to use, low power consumption, anti-jamming features, so its prospects are immeasurable.
The topics to extend the infrared wireless remote control technology for the purpose, a centralized control infrared remote control program, the core is to design a wireless infrared remote control multiple transmit / receive system. The design of an infrared transmission of information as a carrier of controlled object can work 8 state short-range wireless control for industrial, medical, home appliances and other equipment on or off remotely, it can be a device eight kind of working state synchronization control, or two kinds of equipment working state of simultaneous control of 4.
The system can achieve the specific parameters are as follows:
1. Remote control distance is not less than 5m, the infrared remote control transmitter and the distance between the infrared receiver is not less than 5m;
2. Remote control for the 8 large ones, can be controlled on the eight switch control device at the same time;3. Working frequency is 38KHz, the infrared transmission and reception of the carrier frequency of 38KHz;4. Receiver to display control.
Key words: MCU Send and receive IR data Octal LED switching circuit
Keyboard control