Ademco Inc.

Rafael Aguilar

Ever Hernandez

Mohammad Aljabari

Ricardo Gonzalez

Sergio Adrian Martinez

Ricardo Cano

A thermostat device may use one or two temperature sensors inside the housing of the thermostat device to perform temperature compensation to determine the ambient temperature outside the housing of the thermostat device. Processing circuitry of the thermostat device may determine a current operating mode of the thermostat device out of a plurality of operating modes. The processing circuitry may also use machine learning to estimate the current and voltage of the thermostat device based on temperature differences between the two temperature sensors. The processing circuitry may determine, based at least in part on the estimated current and voltage of the thermostat device and the current operating mode of the thermostat device, an ambient temperature outside the housing of the thermostat device.

Temperature compensation for low-voltage thermostats

The disclosure is directed to techniques for a thermostat to determine the air temperature of a room based on measurements of temperatures sensors located inside a housing of the thermostat. Because the thermostat for an evaporative cooler operates at line voltage and controls current flowing to the evaporative cooler, the magnitude of current flowing through the thermostat may vary from nearly zero, when the thermostat is in the powered-off state, to a current on the order of several amps. The variation in current causes a variation in temperature inside the housing of the thermostat. The techniques of this disclosure compensate for changes the internal housing temperature caused by changes in operating mode. The compensation allows the temperature sensors inside the thermostat housing to determine the air temperature of the room in which the thermostat is located, without regard for the operating mode of the evaporative cooler system.

Growing community of inventors

Chihuahua, Mexico

Rafael Aguilar