Oxygen system having sensors with a passive RFD interface

• US 9,217,684 B2
• Filed: 09/30/2013
• Issued: 12/22/2015
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: B/E Aerospace, Inc. (Rtx Corporation)
• Original Assignee: B/E Aerospace, Inc. (Rtx Corporation)
• Inventors: Richardson, Chad, Noehren, Wayne
• Primary Examiner(s): Caputo, Lisa
• Assistant Examiner(s): DUNLAP, JONATHAN M
• Application Number:
  US14/041,752
• Publication Number:
  US 20140150561A1
• Time in Patent Office: 813 Days
• Field of Search: 737/53, 737/24, 737/17, 737/18
• US Class Current: 1/1
• CPC Class Codes: G01L 19/086 for remote indication
• CPC Class Codes: G01L 19/143 Two part housings
• CPC Class Codes: G01L 9/00 Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements G01L11/004 takes precedence; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means measuring differences of two or more pressure values G01L13/00; measuring two or more pressure values simultaneously G01L15/00

Abstract

A passively powered gas sensor for remotely reading and transmitting a gas pressure of a system, comprising a hollow cylindrical body, a stem axially aligned and extending outwardly from a first surface of the hollow cylindrical body, a pressure sensing element in the stem, and an antenna coupled to the pressure sensing element, where the antenna is located within the hollow cylindrical body and the stem. The pressure sensing device is polled remotely by a polling device, and powered by the polling device.

Claims

1. A passively powered gas sensor for remotely reading and transmitting a gas pressure of a system, comprising:

a hollow cylindrical body;

a stem axially aligned and extending outwardly from a first surface of the hollow cylindrical body, the stem having an interior surface and a threaded exterior surface, the stem including a path that permits a gas to enter only partially into the stem;

a pressure sensing element in the stem adjacent the path that permits a gas to enter only partially into the stem;

an antenna coupled to the pressure sensing element, where the antenna is located within the hollow cylindrical body and the stem;

wherein the pressure sensing device is polled remotely by a polling device, and powered by the polling device; and

wherein the passively powered gas sensor has no moving components and does not continuously monitor a pressure.

2. The passively powered gas sensor of claim 1 wherein the cylindrical body has a hexagonal profile.

3. The passively powered gas sensor of claim 1, wherein the polling device powers the sensor with RF energy.

4. The passively powered gas sensor of claim 1, further comprising a printed circuit board that carries the pressure sensing element, the printed circuit board disposed entirely within the stem.

5. The passively powered gas sensor of claim 1, wherein the hollow cylindrical body is filled with encapsulating material.

6. The passively powered gas sensor of claim 1, wherein the sensor can read pressures up to 2900 psi.