SU1675820A2 - Magnetically-controlled commutation member - Google Patents

Abstract

The invention relates to automation and can be used in automatic control, monitoring, measurement and communication systems. The aim of the invention is to expand the functional possibilities by introducing additional switched channels for light signals. The switching element contains a sealed cylinder 1 and several pairs of optical fibers 2, 3 with grinding ends mounted console and opposite one inside the cylinder at its opposite ends. The light paths are switched using one curtain 4, which is L-shaped and cantilevered in one of the ends of the sealed balloon. The element contains a ferromagnetic plate 5, which is simultaneously an electrical contact, 2 sludge.

Description

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1

The invention relates to automation, can be used in systems of automatic control, monitoring, measurement and communication, and is an improvement of the well-known element of the author. St. No. 1429076.

The aim of the invention is to extend the functionality by introducing one or more shorting paths for light signals.

FIG. 1 shows a magnetically controlled switching element that closes the path for an electrical signal and closes two paths for light signals; in fig. 2 shows section A-A in FIG. one.

The switching element contains a sealed dielectric balloon 1, light guides 2 and 3 with ground ends mounted fixed on one axis (in pairs) with a gap and one opposite to the other. The axes of all pairs are parallel. The minimum distance between the axes of the optical fibers D, where D is the external diameter of the optical fiber.

A ferromagnetic L-shaped curtain 4 is fixed in the housing, the protruding end of which performs the role and function for connecting an external electrical one. A ferromagnetic plate 5 is fixed at the opposite end of the cylinder, the protruding end of which serves as a second terminal for the electric circuit.

A smaller portion of the L-shaped shutter is introduced into the gap between the ends of the optical fibers and blocks the luminous flux between the ends of the optical fibers.

The smaller portion of the shutter 4 is provided with one or more holes with a diameter equal to D. In the initial state, the axis of the hole coincides with the center line between the axes of the optical fibers.

Plate 5 is placed above the curtain with

a gap of 100-200 microns with overlapping. The contact zones of the shutter 4 and the plate 5 have a special coating that is resistant to erosion and with low electrical resistance. In the absence of a control magnetic field, an opaque shutter blocks the luminous flux (off state), while the contacts of elements 4 and 5 are open. Under the influence of an external magnetic field, a ferromagnetic shutter

deflecting against the plate 5, this opens the way for the light fluxes in the optical fibers 2 and 3 (the On state) and contacts 3 and 4 are closed.

The luminous flux in the optical fibers 2 passes

through hole 6 in the blind. The number of additional pairs of fibers may be one, three, five, etc. The number of holes in the blind in this case should be one, two, four, etc.

Claims (1)

The invention of the magnetic switching element according to the author. St. No. 1429076, I differ from the fact that, in order to expand functionality, at least two additional optical fibers are installed, installed similarly to and in parallel to the main optical fibers, while the L-shaped curtain has a section located between ends of light guides, provided with at least one hole.