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Pneumatic To Electric Transducer Plane

IP.com Disclosure Number: IPCOM000096345D
Original Publication Date: 1963-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 85K

Publishing Venue

IBM

Related People

Saghafi, H: AUTHOR

Abstract

As shown in B, a transducer plane 1 is sandwiched between superposed planes of pneumatic logic elements 2, such as of the type shown in section A.

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Pneumatic To Electric Transducer Plane

As shown in B, a transducer plane 1 is sandwiched between superposed planes of pneumatic logic elements 2, such as of the type shown in section A.

Sensing units 3 are inserted in selected holes 4 and 4' in the plane 1 in the flow path of pneumatic fluid as it flows through the transducer plane from one logic element to another. Units 3 are adapted to sense whether fluid is flowing through the selected holes. As illustrated, each sensing unit comprises simple flexible contacts that are normally in contact but are spread apart by fluid flowing in the direction of the arrows 5. When these contacts are together, they complete electrical circuitry. Such includes, e.g., respective lead wires or printed circuit leads 6 and 6' along one side of the transducer plane, and printed circuitry 7 applied to one end of the transducer plane.

Transducer planes of this type are used to convert pneumatic logic information or signals to electrical output signals. They are used as a diagnostic aid, e.g., to detect which of a number of ports is not receiving pneumatic fluid.

Although the contacts illustrated indicate flow only if it is in the direction of the arrows 5, pressure sensitive devices of other types can be used which and not affected by direction of flow. For example, pressure sensitive paint can be used having an electrical resistance which is varied by pressure. Or, piezo-electric transducers can be used.

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