Method for detection of a stable installation of a system having a rotating device therein
First Claim
1. A method for detecting a stable installation of a system having a rotation device that is mounted to rotate around a system axis, and a detection arrangement that detects measurement values indicative of oscillation of said rotation device, said method comprising the steps of:
- rotating said rotation device through a plurality of rotations and, with said detection arrangement, detecting at least one discrete measurement value in each of said different rotations of said rotation device, thereby obtaining a measurement value set comprising a plurality of said discrete measurement values;
for said measurement value set, automatically electronically determining a statistical spread of said a plurality of measurement values therein by determining a value separation among said discrete measurement values; and
for said measurement value set, automatically electronically comparing the statistical spread thereof to a predetermined threshold, and thereby automatically electronically determining whether said system is supported in a stable manner if the calculated statistical spread for any measurement value set has a predetermined relationship to said threshold, and that said system is not supported in a stable manner if the calculated statistical spread for any measurement value set does not have said predetermined relationship to said threshold; and
only if said system is determined not to be supported in a stable manner, generating a humanly perceptible warning signal.
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Accused Products
Abstract
In a method for detection of a stable installation of a system that has a rotation device mounted to rotate around a system axis and an arrangement for detection of measurement values indicative of oscillation of the rotation device, a statistical spread of the measurement values is calculated from N measurement values of different rotations of the rotation device, and the stable installation of the system is detected by a comparison of the calculated statistical spread with a predeterminable threshold. The detected N measurement values can be detected with a known arrangement for determination of an out-of-balance condition, so the method for detection of a stable installation can be implemented without the use of additional hardware components.
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Citations
15 Claims
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1. A method for detecting a stable installation of a system having a rotation device that is mounted to rotate around a system axis, and a detection arrangement that detects measurement values indicative of oscillation of said rotation device, said method comprising the steps of:
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rotating said rotation device through a plurality of rotations and, with said detection arrangement, detecting at least one discrete measurement value in each of said different rotations of said rotation device, thereby obtaining a measurement value set comprising a plurality of said discrete measurement values; for said measurement value set, automatically electronically determining a statistical spread of said a plurality of measurement values therein by determining a value separation among said discrete measurement values; and for said measurement value set, automatically electronically comparing the statistical spread thereof to a predetermined threshold, and thereby automatically electronically determining whether said system is supported in a stable manner if the calculated statistical spread for any measurement value set has a predetermined relationship to said threshold, and that said system is not supported in a stable manner if the calculated statistical spread for any measurement value set does not have said predetermined relationship to said threshold; and
only if said system is determined not to be supported in a stable manner, generating a humanly perceptible warning signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for detecting a stable installation of a computed tomography apparatus having a gantry therein during a procedure for correction of an out-of-balance condition of said gantry, said gantry being mounted in said computed tomography system to rotate around a system axis, and said computed tomography system comprising a detection arrangement to detect measurement values indicative of oscillation of said gantry, said method comprising the steps of:
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rotating said gantry through a plurality of rotations and, with said detection arrangement, detecting whether said computed tomography apparatus has a stable installation by detecting at least one discrete measurement value in each of said different rotations of said gantry, therein by determining a value separation among said discrete measurement values and, for said measurement value set, automatically electronically determining a statistical spread of said plurality measurement values therein by determining a value separation among said discrete measurement values and for said measurement value set, automatically electronically comparing the statistical spread thereof to a predetermined threshold, and automatically electronically determining that said gantry is supported in a stable manner if the calculated statistical spread for any measurement value set has a predetermined relationship to said threshold, and that said gantry is not supported in a stable manner if the calculated statistical spread for any measurement value set does not have said predetermined relationship to said threshold; if said gantry is to be supported a stable, continuing said procedure for correction of an out-of-balance condition of said gantry; and only if said gantry is determined not to be supported in a stable manner, generating a humanly perceptible warning signal. - View Dependent Claims (14, 15)
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Specification