公开(公告)号：US10777072B2

公开(公告)日：2020-09-15

申请号：US16238781

申请日：2019-01-03

Applicant: GOOGLE LLC

Inventor： Yoky Matsuoka ,  Anthony Michael Fadell ,  Matthew Lee Rogers ,  Jeffrey Lee

IPC: G08B25/00 ,  G08B17/10 ,  G08B21/18 ,  G08B19/00 ,  G08B29/14 ,  G08B3/10 ,  G08B21/14 ,  G08B29/20

Abstract: Systems and methods for using multi-criteria state machines to manage alarming states and pre-alarming states of a hazard detection system are described herein. The multi-criteria state machines can include one or more sensor state machines that can control the alarming states and one or more system state machines that can control the pre-alarming states. Each state machine can transition among any one of its states based on sensor data values, hush events, and transition conditions. The transition conditions can define how a state machine transitions from one state to another. The hazard detection system can use a dual processor arrangement to execute the multi-criteria state machines according to various embodiments. The dual processor arrangement can enable the hazard detection system to manage the alarming and pre-alarming states in a manner that promotes minimal power usage while simultaneously promoting reliability in hazard detection and alarming functionality.

公开(公告)号：US20190156653A1

公开(公告)日：2019-05-23

申请号：US16238781

申请日：2019-01-03

Applicant: GOOGLE LLC

Inventor： Yoky Matsuoka ,  Anthony Michael Fadell ,  Matthew Lee Rogers ,  Jeffrey Lee

IPC: G08B25/00 ,  G08B21/14 ,  G08B17/10 ,  G08B19/00 ,  G08B21/18 ,  G08B3/10 ,  G08B29/14

CPC classification number: G08B25/002 ,  G08B3/10 ,  G08B17/10 ,  G08B19/00 ,  G08B21/14 ,  G08B21/182 ,  G08B25/001 ,  G08B25/008 ,  G08B29/14 ,  G08B29/20

Abstract: Systems and methods for using multi-criteria state machines to manage alarming states and pre-alarming states of a hazard detection system are described herein. The multi-criteria state machines can include one or more sensor state machines that can control the alarming states and one or more system state machines that can control the pre-alarming states. Each state machine can transition among any one of its states based on sensor data values, hush events, and transition conditions. The transition conditions can define how a state machine transitions from one state to another. The hazard detection system can use a dual processor arrangement to execute the multi-criteria state machines according to various embodiments. The dual processor arrangement can enable the hazard detection system to manage the alarming and pre-alarming states in a manner that promotes minimal power usage while simultaneously promoting reliability in hazard detection and alarming functionality.