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US 11,231,405 B2Granted
Calibrationless operation method
AssigneeNovinium, Inc.
InventorsGlen John Bertini, Sumadhu Grandhi Arigala, Weston Philips Chapin Ford, Julien Raul Robert
Life of this patent
Estimating the term…
Abstract
A method that includes obtaining a sensor reading from a sensor installed inside an underground vault and determining whether the sensor reading is indicative of an alarm state. When the sensor reading is indicative of the alarm state, the method obtains at least one new reading and determines whether the sensor reading includes sensor drift based at least in part on the at least one new reading. The alarm state is established when the sensor reading is determined not to include sensor drift. The sensor drift is removed when the sensor reading is determined to include sensor drift.
Claims25
A method comprising:
- obtaining a sensor reading from a sensor installed inside an underground vault;
- determining whether the sensor reading is indicative of an alarm state;
- if the sensor reading is indicative of the alarm state, triggering variable active dilution inside the underground vault, obtaining at least one new sensor reading after triggering the variable active dilution, and determining whether the sensor reading includes sensor drift based at least in part on the at least one new sensor reading;
- establishing the alarm state when the sensor reading is determined not to include sensor drift;
- and
- removing the sensor drift when the sensor reading is determined to include sensor drift.
3 more elements
A system comprising:
- a sensor installed inside an underground vault;
- and
- a system controller comprising at least one processor connected to memory storing instructions executable by the at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to:
- obtain a sensor reading from the sensor;
- determine whether the sensor reading is indicative of an alarm state;
- when the sensor reading is indicative of the alarm state, trigger variable active dilution inside the underground vault, obtain at least one new sensor reading after triggering the variable active dilution, and determine whether the sensor reading includes sensor drift based at least in part on the at least one new sensor reading;
- establish the alarm state when the sensor reading is determined not to include sensor drift;
- and
- remove the sensor drift when the sensor reading is determined to include sensor drift.
6 more elements
A system comprising:
- a sensor installed inside an underground vault;
- and
- a system controller comprising at least one processor connected to memory storing instructions executable by the at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to:
- obtain a sensor reading from the sensor;
- determine whether the sensor reading is indicative of an alarm state;
- when the sensor reading is indicative of the alarm state, trigger variable active dilution inside the underground vault, obtain at least one new sensor reading after triggering the variable active dilution, and determine whether the sensor reading includes sensor drift based at least in part on the at least one new sensor reading, the variable active dilution being dilution of a first type;
- establish the alarm state when the sensor reading is determined not to include sensor drift;
- and
- remove the sensor drift when the sensor reading is determined to include sensor drift.
6 more elements
A system comprising:
- a sensor installed inside an underground vault;
- and
- a system controller comprising at least one processor connected to memory storing instructions executable by the at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to:
- obtain a sensor reading from the sensor;
- determine whether the sensor reading is indicative of an alarm state;
- when the sensor reading is indicative of the alarm state, trigger variable active dilution inside the underground vault, obtain at least one new sensor reading after triggering the variable active dilution, and determine whether the sensor reading includes sensor drift based at least in part on the at least one new sensor reading, the variable active dilution being dilution of a second type;
- establish the alarm state when the sensor reading is determined not to include sensor drift;
- and
- remove the sensor drift when the sensor reading is determined to include sensor drift.
6 more elements
Dependencies are inferred from the claim text.