Carrier Corporation

Jon K Evju

David Patrick Potasek

Roger Alan Backman

Anand Venkatesh Sankarraj

Robert L Fillmore

Tanner Warner

Thi A Nguyen

Siqi Wei

Gary Follett

A gas detector includes a membrane configured to define a sensing chamber of the gas detector; a strain sensor operatively connected to the membrane, the strain sensor configured for generating output signals related to strain in the membrane; and a controller operatively connected to the strain sensor, the controller configured to: determine a strain in the membrane based on the output signals; and determine a condition of the membrane based on the determined strain, wherein the determined condition indicates whether the membrane is blocked.

Systems and methods for membrane blockage detection in gas detectors

A combustible gas sensor that includes a reference sensor. The reference sensor includes a first substrate having a first substrate first surface, a first insulating layer disposed on the first substrate first surface, and a first heater at least one of embedded within the first insulating layer and disposed on the first insulating layer. The first substrate is a MEMS substrate.

Combustible gas sensor

Methods and systems for detecting membrane blockage in a gas detector are disclosed. In some embodiments, the gas detector comprises a membrane defining a sensing chamber of the detector, the sensing chamber comprising a relaxed state pressure. The method comprises applying one or more forces on one or more walls of the membrane, wherein applying the force causes a volume change inside the sensing chamber. The method further comprises measuring a pressure change inside the sensing chamber, the pressure change being caused by the volume change. The method further comprises determining a rate of return to the relaxed state inside the chamber and determining a condition of the membrane based on the determined rate of return to the relaxed state.

Growing community of inventors

Shakopee, MN, United States of America

Jon K Evju