The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2015
Filed:
Mar. 12, 2013
Parrot, Paris, FR;
Parrot, Paris, FR;
Abstract
The drone comprises altitude determination means (), with an estimator () combining the measures of an ultrasound telemetry sensor () and of a barometric sensor () to deliver an absolute altitude value of the drone in a terrestrial system. The estimator comprises a predictive filter () incorporating a representation of a dynamic model of the drone making it possible to predict the altitude based on the motor commands () and to periodically readjust this prediction as a function of the signals delivered by the telemetry sensor () and the barometric sensor (). Validation means analyze the reflected echoes and possibly modify the parameters of the estimator and/or allow or invalidate the signals of the telemetry sensor. The echo analysis also makes it possible to deduce the presence and the configuration of an obstacle within the operating range of the telemetry sensor, to apply if need be a suitable corrective action.