Browse Prior Art Database

Pneumatic Sensor for Prism Monitoring System

IP.com Disclosure Number: IPCOM000045093D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Messina, G: AUTHOR

Abstract

This article concerns a pneumatic probe which can be used with any conventional pneumatic measuring or gaging system to determine the relative distance between physical bodies. The probe features a tip in communication with a particularly configured air chamber to which air is supplied and from which air is exhausted.

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Pneumatic Sensor for Prism Monitoring System

This article concerns a pneumatic probe which can be used with any conventional pneumatic measuring or gaging system to determine the relative distance between physical bodies. The probe features a tip in communication with a particularly configured air chamber to which air is supplied and from which air is exhausted.

A probe 1 in accordance with this article is shown in the figure. As illustrated, probe 1 is arranged to function as the sensor in a pneumatic measuring system (not shown), which system measures the relative distance and variation thereof between probe 1 and an object 0. The position of the probe establishes a reference from which the location of object 0 may be measured. Air supplied by the pneumatic system gives rise to a pressure and fluctuation thereof within probe 1 which may be converted to measurements of the relative distance between probe 1 and object 0.

As shown in the figure, probe 1 includes a chamber 2 which receives air from an inlet 10 and directs it against base 3 of plunger 4. Gap 5 between the coaxial chamber outlet and plunger face 3 corresponds to the sensing gap in a conventional pneumatic gaging system. The gaging air leaving sensing gap 5 is directed, as shown, to a recovery chamber 6 and is exhausted via tubing 7. An optional resilient bellows or boot 8 can be provided to hermetically seal plunger
4. An optional tapered metering needle 9 can be added to plunger 4 to increase the me...