System and method for detecting an object
AssigneeSz Dji Technology Co., Ltd.
InventorsJiebin Xie, Wei Ren, Guyue Zhou
Life of this patent
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Abstract
A system for detecting objects using ultrasonic waves and methods for making and using the same are provided. The object detection system uniquely encodes each of a plurality of ultrasonic waves and transmit each of the uniquely-encoded ultrasonic waves in a respective direction. The object detection system then receives any of the emitted uniquely-encoded ultrasonic waves that are reflected from an object. By decoding the reflected ultrasonic waves, the object detection system distinguishes among the uniquely-encoded ultrasonic waves and detect the existence and location of the object.
Claims14
A method for detecting an object, comprising:
- emitting a plurality of ultrasonic waves, each being encoded with a unique pattern of ultrasonic pulses and emitted in a predetermined direction, for reflection as a plurality of reflected ultrasonic waves;
- receiving the plurality of reflected ultrasonic waves, each of the plurality of reflected ultrasonic waves including ultrasonic pulses;
- and
- searching for one of the encoded unique patterns of ultrasonic pulses from the plurality of reflected ultrasonic waves, based on intervals and strengths of the ultrasonic pulses in each of the plurality of reflected ultrasonic waves, and a number of patterns of the ultrasonic pulses that match the encoded unique pattern in each of the plurality of reflected ultrasonic waves, to decode the reflected ultrasonic waves to determine an existence or a location of the object, one interval of the intervals of the ultrasonic pulses including a time between two adjacent ones of the ultrasonic pulses in one of the plurality of reflected ultrasonic waves.
An ultrasonic device for detecting an object, comprising:
- an emitting sensor configured to emit a plurality of ultrasonic waves, each being encoded with a unique pattern of ultrasonic pulses and emitted in a predetermined direction, for reflection as a plurality of reflected ultrasonic waves;
- a receiving sensor configured to receive the plurality of reflected ultrasonic waves, each of the plurality of reflected ultrasonic waves including ultrasonic pulses;
- and
- a processor configured to search for one of the encoded unique patterns of ultrasonic pulses from the plurality of reflected ultrasonic waves, based on intervals and strengths of the ultrasonic pulses in each of the plurality of reflected ultrasonic waves, and a number of patterns of the ultrasonic pulses that match the encoded unique pattern in each of the plurality of reflected ultrasonic waves, to decode the reflected ultrasonic waves to determine an existence or a location of the object, one interval of the intervals of the ultrasonic pulses including a time between two adjacent ones of the ultrasonic pulses in one of the plurality of reflected ultrasonic waves.
An object detection system, comprising:
- a plurality of emitting sensors configured to emit a plurality of ultrasonic waves, each being encoded with a unique pattern of ultrasonic pulses and emitted in a predetermined direction, for reflection as a plurality of reflected ultrasonic waves;
- a plurality of receiving sensors corresponding with the emitting sensors, respectively, and configured to receive the reflected ultrasonic waves, each of the plurality of reflected ultrasonic waves including ultrasonic pulses;
- and
- a processor configured to search for one of the encoded unique patterns of ultrasonic pulses from the plurality of reflected ultrasonic waves, based on intervals and strengths of the ultrasonic pulses in each of the plurality of reflected ultrasonic waves, and a number of patterns of the ultrasonic pulses that match the encoded unique pattern in each of the plurality of reflected ultrasonic waves, to decode the reflected ultrasonic waves to determine an existence or a location of the object, one interval of the intervals of the ultrasonic pulses including a time between two adjacent ones of the ultrasonic pulses in one of the plurality of reflected ultrasonic waves.
Dependencies are inferred from the claim text.