Patent ID: 11134864

Abstract:
A method and system for detecting a position of an animal in laboratory conditions based on ultrasonic tracking is disclosed. The animal has an attached mobile device comprising an ultrasonic receiver. Ultrasonic signals emitted from ultrasonic emitters either have an envelope with a shape that is chosen with the first derivative restricted by condition |dE/dt|<A/T and/or with the second derivative restricted by condition |d2E/dt2|<A/T2, wherein E(t) is the envelope curve, t is time, A is the maximum amplitude of the ultrasonic signals and T is the period of the base frequency of the ultrasonic signals; or oscillations of voltage or current of ultrasonic emitters during signal transmission have envelopes described by a special function for amplitude of the oscillations. The mobile device receives an optical or radio synchronization signals from signal sources connected with the ultrasonic emitters. Analog or digital filters are used to separate ultrasonic signals from animal's vocalization. In some embodiments coordinates are obtained by using optical scanning sources with ultrasonic emitter placed at the axes of rotation of one or two emitted rotating planar scanning light beams. Tracking for multiple animals is disclosed.