Abstract
Robot system uses many kind of sensors to detect obstacles and recognize their environment. Ultra sonic sensor system is such a typical sensor, which is only valid in quiet space. Since, the received signal includes both of its own reflect signal, and reflect signals of other sensors. It is difficult to use sonic sensors multiplically. In this paper, we propose a sonic measurement method under multiple ultra sonic sensors environment. In proposed method, the transmittal signals have their own pattern by using chaos phenomenon. Generally, chaos phenomenon is known as generating unforcastable behavior. Thus, each own transmittal signal pattern can be distinguished from other ultra sonic sensor systems in any transmittal period. Each system calculate the cross correlation of their own transmittal signals and receive signals, and it extracts the right reflect signal. We show some experimental results to demonstrate our proposed strategy.
