Methods, devices, and systems which determine a parameter value of an object or an environment from a voltage reading associated with a common mode signal of a balanced circuit
US9429479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2012 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | May 28, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/029
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a value of a parameter of an object or an environment includes positioning a device having a balanced circuit in or on an object or within a particular environment, wherein the balanced circuit comprises elements which are operationally sensitive to changes in a parameter of the object or the environment. The method further includes measuring a common mode signal of the balanced circuit and determining, from the common mode signal, a value of the parameter. An exemplary implementation of the method includes determining temperature using a resistive sensor having a Wheatstone bridge circuit with two variable resistors and two fixed resistors. Embodiments of systems and devices configured to employ such methods are provided, particularly medical probes, electronic signal monitoring devices, and systems employing such devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.