Specular surface inhibit
First Claim
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1. In a proximity detecting system having a beam of energy transmitted to remote objects for reflection therefrom and energy detecting means positioned to receive reflected energy so as to produce an output of magnitude dependent on the amount of energy received thereby, apparatus for determining when reflected energy is received from a highly specular object, comprising:
- first means connected to receive the output and to produce a resultant signal as a function thereof, the resultant signal having a value greater than a predetermined value when a specular surface is encountered; and
second means connected to receive the resultant signal and to produce an inhibit signal when the resultant signal exceeds the predetermined value.
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Abstract
A proximity detection system which detects the presence of highly specular surfaces which could produce erroneous indications for the system and suppresses them so that they will not affect the system adversely.
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Citations
19 Claims
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1. In a proximity detecting system having a beam of energy transmitted to remote objects for reflection therefrom and energy detecting means positioned to receive reflected energy so as to produce an output of magnitude dependent on the amount of energy received thereby, apparatus for determining when reflected energy is received from a highly specular object, comprising:
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first means connected to receive the output and to produce a resultant signal as a function thereof, the resultant signal having a value greater than a predetermined value when a specular surface is encountered; and second means connected to receive the resultant signal and to produce an inhibit signal when the resultant signal exceeds the predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A proximity detecting system comprising:
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means for projecting a beam of energy; scanning means for directing the beam of energy to remote objects for reflection therefrom; detecting means to receive energy reflected from the objects and to produce first and second detector signals of magnitude dependent upon the amount of radiation received thereby, the relative magnitudes of the first and second detector signals varying as a function of the proximity of the objects; function means connected to receive the first and second detection signals and to produce an output signal in accordance therewith; and inhibit means connected to receive the output signal and operable to produce an inhibit signal whenever the output signal exceeds a predetermined value. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification