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Sonar sensors

The sonar sensors that will be used on the platform are polaroid ranging type sonar sensors. These sensing modules consists of an instrument grade sonar transducer and a processor board and are able to determine the approximate distance to an object within a $ 20^o$ arc extending from the center of the transducer at a range between 6 inches and 35 feet. These sonar sensors will be mounted in the front of the unit in such a way as to slightly overlap the main lobes of sensitivity, this should result in sonar coverage extending out in a $ 40^o$ arc from the front of the platform. Care will be needed to assure that a late return from one modules transmit cycle will not look like a target to the second module. These modules have already been purchased and are ready for mounting.
The sonar modules require a mounting to be constructed that will rigidly hold the transducers in the required position as well as to house the receiver modules and related power supplies.
Software drivers will be needed to allow for easy device independent interfacing to the sonar modules. The PC/104 board is equipped with 48 digital IO lines that will make the interfacing task fairly trivial. The drivers will be implemented as kernel modules to allow for more direct hardware control.
next up previous contents
Next: Infrared sensors Up: Sensor Network Previous: Sensor Network   Contents
Jordan Reynolds 2003-05-29