多路开关的设计（Design of multiplex switch）.docVIP

多路开关的设计（Design of multiplex switch） Design and analysis of multiplex switch system Compared with the wired remote control, the wireless remote control is not affected by the distance, completely eliminates the hidden trouble caused by the cable type remote control device, and brings more convenience for peoples daily work and life. With the rapid development of digital processing technology, wireless digital communication technology is gradually mature, its strong anti-interference ability and is easy to carry out the advantages of various processing on the digital signal, the anti-jamming performance of wireless remote control system gradually improved, the safety performance is greatly improved. At present, the field of wireless remote control mainly includes ultrasonic remote control, infrared remote control and wireless remote control. The ultrasonic remote control and infrared remote control, wireless remote control is spread in the air using radio signals, according to the radio frequency remote control, can penetrate obstacles, propagation distance, thus become the field of wireless remote control for application in national defense, military, scientific research and daily life field more and more widely. Using SiliconLaboratories developed the wireless chip Si4010 and wireless receiver chip Si4313 and C8051F920 chip design and production of the frequency of the radio remote control multiplexer switch system, 433.92MHz has the advantages of simple structure, stable performance, convenient control, suitable for containing more controlled appliance occasions, and can realize the multi function control. 1 system working principle The radio controlled multiplex switch system consists of two parts, the radio transmitting circuit and the radio receiving control circuit. The system block diagram is shown in figure 1. Fig. 1 block diagram of the system The working principle of switch system is a first input through button circuit required control switch circuit, and