SU1460609A1 - Device for measuring small displacements - Google Patents

Abstract

The invention relates to measurement technology and can be used in optical and electronic industry. The purpose of the invention is to increase the sensitivity of the device by using an elastic reflective tape as a sensitive element. The probe is connected to one end of the elastic tape, the other end of which is fixed in the instrument case. Elastic tubes are optically coupled to an optocoupler. When moving the probe, the spatial position of the elastic reflective tape changes and, accordingly, the position of the light spot on the photoresistor in the optocoupler. 1 il. S (l

Description

The invention relates to a measurement technique and can be used in the optical-mechanical industry and electronic instrument making.

The purpose of the invention is to increase the sensitivity of the device.

. The drawing shows a schematic diagram of the device.

On housing 1, comprising a guide sleeve 2, is fixed, an optocoupler 3, connected to an electronic unit 4.

The reflective optical element 5 is a curved elastic band, one end of which is connected to the sensor body 6, and the second is connected to a probe 7 rigidly connected to the attachment unit 8, and is made inside a hollow, where the free part of the elastic element is placed. The test probe 7 is fitted with a return spring 9, and the free end of the rod is adjusted by stops 10 and 11. The free stroke of the rod with stops in a specific embodiment is 10 mm, the measuring base of the device operates within these limits.

The device works as follows.

Before starting work, the probe 7 is released to a free position so that the reflective optical element 5 is rectified, information about the luminous flux goes to the photoresistor and the electronic unit, Optocoupler has an optical channel, and consists of the pairs: photoresistor and cell: ay ( diode with matched spect4ib od

ABOUT

is waving a new position X relative to the Initial,

Experimental studies have shown that the relative elongation of the reflective optical element depends on its deflection as follows: I

A1 O v2 4rZ 1.

§ (J i-i-Xlv

where 1e is the distance between fasteners before deformation. When the elastic element is moved, the image is also displaced. Compiler M. Minin Editor L. Gratillo Tehred L. Oliynyk Proofreader I. Muska

Order 534/50 Circulation 683 Subscription

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

A device for measuring small movements, comprising a housing successively mounted in

a probe designed to communicate with an object and associated with a probe reflecting an optical element, as well as an optocoupler optically coupled to a reflecting optical element,

Characterized by the fact that, in order to increase the sensitivity of the device, the reflecting optical element is made in the form of an elastic. bent in the central part of the tape, fastened with the second end to the body.

YU

Claims (1)

Claims for measuring a small housing containing, for communication with and associated with the probe *, also The movement device, therefore, the installed probe designed by the object, the optical element, an optocoupler optically coupled to the reflective optical element, characterized in that, in order to increase the sensitivity of the device, the reflective optical element is made in the form of an elastic, curved in the central part of the tape, fastened by a second end with housing.