Systems and methods for intelligent alarming

摘要

Systems and methods for using state machines to manage alarming states and pre-alarming states of a hazard detection system are described herein. The 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 raw sensor data values, filtered sensor data values, and transition conditions. Filters may be used to transform raw sensor values into filtered values that can be used by one or more state machines. Such filters may improve accuracy of data interpretation by filtering out readings that may distort data interpretation or cause false positives. For example, smoke sensor readings may be filtered by a smoke alarm filter to mitigate presence of steam.

主权项

1. A hazard detection system, comprising: a plurality of sensors;
an alarm; a speaker; a plurality of filters that transform raw sensor data received from at least one of the plurality of sensors into filtered output values; a plurality of state machines for managing a plurality of states based on the raw sensor data, the filtered output values, and at least one condition parameter, wherein the plurality of states comprises at least one alarming state and at least one pre-alarming state, wherein the at least one alarming state controls use of the alarm, and wherein the at least one pre-alarming state controls use of the speaker; and wherein one of the filters is an alarm filter, and wherein the at least one condition parameter comprises an alarm threshold, and wherein the plurality of state machines transition to the at least one alarming state when the filtered output value of the alarm filter is one of equal to and greater than the alarm threshold, and wherein one of the filters is a no hush filter, and wherein the at least one condition parameter comprises a no hush threshold, and wherein the plurality of state machines transition to the at least one alarming state when the filtered output value of the no hush filter is one of equal to and greater than the no hush threshold.