Trane International Inc.

Vardas Solutions LLC

Alejandro Jimenez

Steven K Klingemann

Chad Vardas

Alex Jones

Jan Niewiadomski

Systems and methods measure impedance across a user's chest during respiration to determine a rate of respiration. With AC-modulation contacts separated from impedance-measuring contacts, analog filtering to remove EMI, a bridging capacitor to remove DC noise, and digital filtering to further remove EMI, a user's respiration may be measured with the AC-modulation contacts and the impedance-measuring contacts placed at user extremities.

Measuring user respiration at extremities

Techniques and arrangements for forming ground bonds between a plurality of components are provided. In one form, a grounding arrangement includes a first circuit board including a first ground plane and a flange member electrically coupled to the first ground plane. The arrangement also includes a second circuit board including a second ground plane, and a polymeric member including an electrically conductive coating. The polymeric member forms a bond between the first ground plane, the flange member, and the second ground plane. In one particular but non-limiting aspect of this form, the grounding arrangement is utilized in a human machine interface having a liquid crystal display. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the description and drawings.

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Maple Grove, MN, United States of America

Alejandro Jimenez