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First Claim
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1. A mobile robot control system, the system comprising:
- a transducer configured to transmit emissions and to receive reflections of transmitted emissions;
a rotatable reflector coupled to the transducer to direct transmitted emissions away from the transducer and to direct reflections of transmitted emissions toward the transducer; and
a processor configured to;
obtain a characteristic of a ring-down signal of a transmitted emission;
detect an echo of another emission based on the obtained characteristic of the ring-down signal; and
control the mobile robot based on the detection of the echo of the other emission.
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Abstract
Detecting an object using sound waves includes outputting a sound wave from a transducer, receiving an echo after outputting the sound wave, obtaining a threshold value based on the echo and plural other echoes that are within a predetermined range of the echo, and determining if the echo is a result of the sound wave based on the threshold value.
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22 Claims
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1. A mobile robot control system, the system comprising:
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a transducer configured to transmit emissions and to receive reflections of transmitted emissions; a rotatable reflector coupled to the transducer to direct transmitted emissions away from the transducer and to direct reflections of transmitted emissions toward the transducer; and a processor configured to; obtain a characteristic of a ring-down signal of a transmitted emission; detect an echo of another emission based on the obtained characteristic of the ring-down signal; and control the mobile robot based on the detection of the echo of the other emission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification