Laser beam measurement system
First Claim
1. A laser beam measurement system comprising:
- first transmitter means located at a first position for producing a laser reference plane by sweeping a laser beam about said first transmitter means; and
first receiver means located at a second position and having a face for receiving said sweeping laser beam, said first receiver means including two spaced apart laser beam detector means for measuring the horizontal angle of the incoming beam with respect to the face of said first receiver means at two spaced apart locations on the face of said first receiver means, said horizontal angle measurements being indicative of the range of said first receiver means from said first transmitter means.
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Accused Products
Abstract
A laser beam three dimensional position measurement system includes a laser transmitter mounted at a stationary reference position at a work site and a receiver mounted on a mobile machine at the site. The transmitter produces a laser reference plane by sweeping a laser beam about the transmitter. The receiver includes two spaced apart laser beam detectors for measuring the horizontal angle of the incoming beam with respect to the face of the receiver at two spaced apart locations on the face of the receiver. The horizontal angles are used to determine the range of the receiver from the transmitter. The transmitter includes an azimuth device for providing signals to the receiver indicative of the azimuth angle at which the receiver is positioned with respect to a reference axis that extends from the transmitter. The receiver includes a decoder signal receiving device for receiving the angle signals from the transmitter in order to determine its azimuth angle.
50 Citations
20 Claims
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1. A laser beam measurement system comprising:
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first transmitter means located at a first position for producing a laser reference plane by sweeping a laser beam about said first transmitter means; and first receiver means located at a second position and having a face for receiving said sweeping laser beam, said first receiver means including two spaced apart laser beam detector means for measuring the horizontal angle of the incoming beam with respect to the face of said first receiver means at two spaced apart locations on the face of said first receiver means, said horizontal angle measurements being indicative of the range of said first receiver means from said first transmitter means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A laser beam measurement system comprising:
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transmitter means located at a first position for producing a predetermined laser reference plane by sweeping a laser beam about said transmitter means; receiver means located at a second position having a face for receiving said sweeping laser beam, said receiver means including two laser beam detector means spaced apart by a predetermined distance for measuring the horizontal angle of the incoming beam with respect to the face of said receiver means at two spaced apart locations on the face of said receiver means; and processor means for determining the range of said receiver means from said transmitter means in response to the angle measurements from each of said laser beam detector means and the predetermined distance between said two spaced apart laser beam detector means. - View Dependent Claims (13, 14, 15, 16)
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17. A laser beam measurement system comprising:
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first transmitter means located at a first position for producing a laser reference plane by sweeping a laser beam about said first transmitter means; first receiver means located at a second position and having a face for receiving said sweeping laser beam, said first receiver means including two spaced apart laser beam detector means for measuring the horizontal angle of the incoming beam with respect to the face of said first receiver means at two spaced apart locations on the face of said first receiver means, said horizontal angle measurements being indicative of the range of said first receiver means from said first transmitter means; said first transmitter means includes azimuth means for continuously transmitting angle signals indicative of an azimuth angle at which said first receiver means is positioned with respect to a reference axis that extends from said first transmitter means; and height sensing means for determining the vertical position of said system relative to said reference plane. - View Dependent Claims (18, 19, 20)
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Specification