Wireless sensor systems and methods
US10603224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jun 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/126
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Incontinence management systems, methods, and sensors are provided that alert the caregiver when a patient's brief has been soiled. A resonant circuit includes a polyaniline/carbon black (PANI/CB) composite chemiresistor which undergoes a large impedance change upon exposure to the vapor or ‘smell’ of urine or feces. Due to the impedance change of the PANI/CB resistor, characteristics of the resonant circuit change when the sensor is exposed to urine or feces vapor. The sensor responds to an interrogating signal with a signal based least in part on the sensor's impedance and indicates the condition of the brief as soiled or clean.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.