METHOD FOR CALIBRATION OF CAR PLATFORMS Russian patent published in 2009 - IPC G01B11/03 

FIELD: physics, measurement.

SUBSTANCE: invention is related to metering technology and may be used in car industry to determine deviations from flatness and horizontality in surfaces of platforms intended for inspection of vehicle technical condition. Invention objective is provision of valid results in performance of calibration of platform surfaces intended for inspection of vehicle technical condition. Method of calibration consists in making of platform plan with specification of longitudinal and cross sections, crossings of which are used to set inspected points of platform surface, in platform marking according to plan, in measurement of inspected points heights differences, and in determination of calibrated platform metrological characteristics compliance with norm documents requirements by measurement results. When measuring heights difference, coherent light beam is formed, which is oriented parallel to cross sections of calibrated platform, light beam is reflected along another longitudinal section of platform, counter is serially installed onto inspected points of another longitudinal section, and the counter is equipped with diaphragm with border around opening of diameter that is equal to diameter of coherent light beam, diaphragm is displaced along vertical axis of counter, and another measurement is performed at even exposure of border around diaphragm opening.

EFFECT: provision of valid results in performance of calibration of platform surfaces intended for inspection of vehicle technical condition.

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