Programmable near-infrared ranging system
First Claim
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1. A ranging system comprising:
- transmitter means for radiating light pulses, said transmitter means after having an on state for radiating light pulses and an off state when no light is radiated and including means for selectively varying the intensity of said radiated light pulses when in said on state; and
receiver means for detecting the existence of and intensity of light reflections from said light pulses as reflected by a reflector of light.
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Abstract
A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.
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15 Claims
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1. A ranging system comprising:
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transmitter means for radiating light pulses, said transmitter means after having an on state for radiating light pulses and an off state when no light is radiated and including means for selectively varying the intensity of said radiated light pulses when in said on state; and receiver means for detecting the existence of and intensity of light reflections from said light pulses as reflected by a reflector of light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification