RU94042213A - Optoelectronic meter of angular velocities and accelerations - Google Patents

Abstract

FIELD: measurement technology. SUBSTANCE: optoelectronic meter serve for measurement of low velocities and accelerations in instruments of types of gradient meter and gyrocompass when they operate under ballistic mode. It includes scanner disc mounted in its case together with rotation drive having M slits on its periphery installed in parallel and uniaxially to measurement disc of same diameter and coupled to rotation axis of measurement object having number of slits N <M. Optical system incorporates illuminator positioned under scanner disc, objective put between discs and photodiode located above measurement disc. Optical axis of system crosses periphery of both discs. System presents null indicator of type of photoelectric microscope and serves for determination of moments of time of crossing of centers of slits of measurement disc and enables time intervals of passage of distance between its slits to be measured with high precision. Measurement of these interval and computation of angular velocities and accelerations of object are carried out with the help of electron circuit and computer. EFFECT: high precision of measurements of angular velocities and accelerations.

Claims (1)

The device is used to measure low speeds and accelerations in devices such as a gradiometer and gyrocompass during their operation in ballistic mode. The meter includes a scanner disk installed in its housing together with a rotation drive, with the number M of slots on its periphery, mounted in parallel and coaxially with a measuring disk of the same diameter associated with the axis of rotation of the measurement object, with the number of slots N <M. The optical system consists of a illuminator located under the scanner disk, a lens located between the disks and photodiodes above the measuring disk, and its optical axis crosses the periphery of both disks. This system is a null indicator of the type of a photoelectric microscope and is used to determine the time points of intersection of the centers of the slits of the measuring disk and makes it possible to measure with high accuracy the time intervals of the distance between its slits. The measurements of these intervals and the calculation of the angular velocities and accelerations of the measurement object are carried out using an electronic circuit and a computer.