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ultrasonic transducers

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The dual-frequency sonar system of the mobile robot RAM-2
M. A. Martinez, J. L. Martinez
Journal:

Robotica / Volume 22 / Issue 3 / June 2004

Published online by Cambridge University Press:

20 May 2004, pp. 263-270
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This paper deals with the design and development of a new perception system for controlling a set of ultrasonic transducers working at two different frequencies generated by a digital signal processor (DSP). Data gathering speed is increased by the simultaneous firing of sonars without crosstalk problems. The software and hardware implementation are presented as well as the results from the calibration process and the integration on board the mobile robot RAM-2. Finally, a demonstration of the use of the proposed equipment to wall-following via a fuzzy controller is described.