A Short-range Wireless Usb Interface Control System Design And Implementation

Currently short-distance wireless communication technique and USB interface are two kinds of hot-spot techniques for data transferring, which have been applied extensively. The two kinds of techniques are adopted in this dissertation, and short-distance wireless control system based on USB interface is designed.The development of short-distence wireless communication is introduced firstly, and the related key technolog'es are analyzed. HID USB protocol and PDIUSBD12 USB chip are particularly studied. The main part of this dissertation is to design the project of short-distance wireless control system, including hardware and software design. By using 89C52 microcontroller and PDIUSBD12 interface chip, a wireless control system based on 315M/433M RF modules is realized, which has the function to control "up"and"down".Hardware principle diagram, software flow chart are given, and source code is designed. By firmware program design, emulation and debugging, the design function is realized.The test results indicate that the design of the system meet the requirements.