Visual and auditory user notification methods for smart-home hazard detector

US9430933B2 · kind B2 · utility

Assignee

• Google LLC · US

Inventors

• Anthony M. Fadell · Portola Valley, US
• Matthew Lee Rogers · Los Gatos, US
• David Sloo · Menlo Park, US
• Maxime Veron · San Jose, US
• Sophie Le Guen · Burlingame, US
• Nick Webb · Menlo Park, US

Key dates

• Filing date: Oct 7, 2014
• Grant date: Aug 30, 2016
• Expiry date: Oct 26, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A50/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Hazard detector for providing a pre-alarm of a developing hazardous condition includes a detection module that detects a hazard level of smoke or carbon monoxide, a storage module that stores a pre-alarm threshold and an emergency threshold, a light source that generates light in a first color, a second color, and a third color, a speaker that generates an audible sound, a horn that generates an audible alarm that a higher volume than the speaker, and a processing module. The processing module receives the detected hazard level and compares it with the pre-alarm threshold and the emergency threshold. The processing module determines that the hazard level is greater than the pre-alarm threshold and less than the emergency threshold and generates an audible pre-alarm speech via the speaker that warns of the developing hazardous condition. The processing module also activates the light source in the second color.