US 2026/0063322 A1 · SYSTEM AND METHOD FOR MONITORING PERFORMANCE OF AIR FILTER

Abstract

A system includes a device including a substrate, a resistor disposed on the substrate, and a thermistor disposed on the substrate and thermally coupled to the resistor. The system further includes a control unit including a power source and a controller. The controller is communicably coupled to the resistor and the power source. The controller is configured to: supply, via the power source, electrical power to the resistor for a time period extending from a first time instance to a second time instance; determine, via the thermistor, a variation of the temperature of the resistor during the time period; and determine an airflow speed based on the variation of the temperature of the resistor in the time period. The system may further include an air filter proximal to which the device may be disposed. The controller may be further configured to determine a filter parameter based on the airflow speed.

Claims20

Dependent claims

A system for monitoring a performance of an air filter, the system comprising:

a device comprising:
a substrate;
at least one resistor disposed on the substrate;
and
at least one thermistor disposed on the substrate and thermally coupled to the at least one resistor;
and
a control unit comprising:
a power source electrically connected to the at least one resistor and configured to supply electrical power to the at least one resistor;
and
a controller communicably coupled to the at least one thermistor and the power source, wherein the controller is configured to:
supply, via the power source, the electrical power to the at least one resistor for a time period extending from a first time instance to a second time instance, such that a temperature of the at least one resistor at the second time instance is greater than the temperature of the at least one resistor at the first time instance;
determine, via the at least one thermistor, a variation of the temperature of the at least one resistor during the time period;
and
determine an airflow speed based on the variation of the temperature of the at least one resistor in the time period.

11 more elements

A method for monitoring a performance of an air filter, the method comprising:

providing a device comprising:
a substrate;
at least one resistor disposed on the substrate;
and
at least one thermistor disposed on the substrate and thermally coupled to the at least one resistor;
supplying, via a power source, electrical power to the at least one resistor for a time period extending from a first time instance to a second time instance, such that a temperature of the at least one resistor at the second time instance is greater than the temperature of the at least one resistor at the first time instance;
determining, via the at least one thermistor, a variation of the temperature of the at least one resistor during the time period;
and
determining an airflow speed based on the variation of the temperature of the at least one resistor in the time period.

6 more elements

Dependencies are inferred from the claim text.

System and method for monitoring performance of air filter

Life of this patent

System and method for monitoring performance of air filter

Life of this patent

Abstract

Claims20