Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Automatic route guidance vehicle
Patent
1997-12-29
1999-08-10
Nguyen, Tan
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Automatic route guidance vehicle
701 24, 701 41, 340943, G01S 1593, G05D 103
Patent
active
059351799
ABSTRACT:
The present invention discloses a proximity sensing system and an autonomous device, like a vacuum-cleaner, being provided with a pair of independent driven wheels (17, 18). The device contains for the proximity orientation and guiding a microprocessor system and a sonar system which includes at least an ultrasonic transmitter and an ultrasonic receiver. An additional mechanical touch sensor is also used in the form of a forward directed bumper (16) carrying the transmitter as well as receiving microphone units. The mechanical bumper actuates at least one touch sensor if the device makes contact with an obstacle in the course of the moving device. The transmitter is a stripe-shaped ultrasound transducer (10) which is positioned at the front of the device and transmits ultrasonic waves with a narrow vertical distribution within a wide sector in front of the device. The receiver includes a number of microphone units (12) provided with hollow pipes (12a, 12b) for the sound. The microphone units (12) together with the transmitter form an efficient sonar system for detecting echoes reflected from objects in the forward course of the moving device.
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Kleiner Mendel
Riise Bjorn
Aktiebolaget Electrolux
Nguyen Tan
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