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US 4,789,970 AGranted
Method and device for positioning an element using ultrasonic sensors
AssigneeInstitut Francais du Petrole
InventorEmile Levallois
Life of this patent
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Abstract
The present invention provides a method and device for determining the positioning of an element or target using at least one acoustic emitting-receiving sensor. In this method only the signal received by said sensor and due to the diffraction of the signal emitted by said sensor is taken into account.
Claims7
A method for determining a position of an object using at least one acoustic emitting-receiving sensor comprising the steps of:
- emitting a signal from said at least one acoustic sensor toward said object, said signal comprising an emission cone of waves;
- processing received waves for detecting only the waves at an edge of said emission cone of waves which have been diffracted by an edge of said object;
- and
- determining the position of said object with respect to said at least one acoustic sensor based on said detected waves of said emission cone of waves.
1 more element
Dependencies are inferred from the claim text.