Abstract: A module-communication method basing on bluetooth technology is presented, which solves the wireless communication problem for a shortrange robot. The said method includes two aspects, one is about software, which partitions bluetooth protocol stack, performs various functions such as query, qualification, connection and communication, etc, and defines the format of the serial data frames, and thereby forms a wireless transparent channel, the other is about hardware, which provides a standard serial port. It simplifies the design of robot wireless communication, and enhances the reliability of communication.

Key words: radio communication networks, bluetooth, spherical robot