The Research And Realization Of Bluetooth Development Kit

This subject is based on the developed project for the bluetooth developing kit researched by Harbin Yi Time Digital Scientific and Technological Co., Ltd.With the increasing demand of people for mobile communication, the communication begins a new era from wiring to wireless, from stationary to mobile. As an open standard for close wireless communication in nature and on the basis of close wireless connection at low cost, the bluetooth technology enables all kinds of equipment to realize the interchange between voice and data information in the range of 10~ 100m. The bluetooth technology solves the "the last 10m" problem on wireless network and fulfills the so-called personal network. Therefore, researching how to use the bluetooth technology to serve people is quite meaningful.In this paper, the systematic structure of the bluetooth is introduced at first, then the fundamental principle of the bluetooth frequency extension communication is presented with the emphasis on the voice and data transferring theory, and based upon which the modulation technique and frequency leaping and extending technique are evaluated according to the base module of the bluetooth system. With reference to version 1.1 of bluetooth specification, the ESD Bluetooth Kit (ESDBK) has been designed and accomplished, and the tests for the functions of the ESDBK has also been carried out, the results met all indices proposed in this paper. On the basis of the ESDBK, the peer to peer wireless interconnected system is simply introduced, and the methods and steps to realize the bluetooth application system is discussed by means of hardware and software modules.Finally, how to establish the bluetooth data connection is explained, meanwhile how to make use of such technology in industry field is discussed. As a typical application, the ESDBK is utilized to fulfill the automobilefour-wheel positioning. The construction and operating principle of such a system addressed in this paper presents some instructions for users to further develop the bluetooth products.