On-device low power, rapid response heaters for device calibration processes

A system comprising:

• a sensor device including a temperature sensor and a relative humidity sensor;
• a heater coupled to the sensor device, the heater including individually controllable heating elements;
• a processor coupled to the sensor device and the heater, the processor configured to:
• start a calibration process for the system;
• receive a relative humidity measurement from the relative humidity sensor and a plurality of temperature measurements from the temperature sensor;
• and
• activate one or more of the heating elements responsive to at least one of the temperature measurements being less than a temperature threshold;
• and
• a comparator coupled to the processor, the comparator configured to compare the relative humidity measurement to a relative humidity threshold responsive to one of the temperature measurements exceeding the temperature threshold;
• wherein the processor is further configured to determine whether to continue or abort the calibration process based on a result of the comparing.

A system comprising:

• a sensor device including a temperature sensor and a relative humidity sensor;
• a heater coupled to the sensor device, the heater comprising:
• an array of resistors, each resistor including a first terminal and a second terminal, the first terminals of the resistors of the array of resistors coupled to a first voltage terminal;
• and
• an array of transistors, each transistor including a first current terminal, a second current terminal, and a control terminal, the respective first current terminals of the array of transistors coupled to the respective second terminals of the resistors of the array of resistors, and the second current terminals of the array of transistors coupled to a second voltage terminal;
• a processor coupled to the sensor device and coupled to the control terminals of the transistors of the array of transistors, the processor configured to:
• start a calibration process for the system;
• receive a relative humidity measurement from the relative humidity sensor and a plurality of temperature measurements from the temperature sensor;
• and
• activate one or more of the transistors responsive to at least one of the temperature measurements being less than a temperature threshold;
• and
• a comparator coupled to the processor, the comparator configured to compare the relative humidity measurement to a relative humidity threshold responsive to one of the temperature measurements exceeding the temperature threshold;
• wherein the processor is further configured to determine whether to continue or abort the calibration process based on a result of the comparing.