Environmental sensor and method of operating the same
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United States of America Patent
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Jan 2, 2018
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app pub date -
Dec 17, 2015
filing date -
Dec 17, 2015
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Abstract
A gaseous-fluid environmental sensor having a gaseous-fluid flow system that defines a flow path coupling an intake port to an exhaust port. The gaseous-fluid flow system includes a blower and a flow sensor. The blower includes a motor and the flow sensor senses a flow-related parameter. The gaseous-fluid environmental sensor further includes a battery, an electrical sensor sensing an electrical power-related parameter, and a controller electrically coupled to the electrical sensor, the flow sensor, and the motor. The controller is configured to generate a composite drive waveform having a first component based on the sensed flow-related parameter and a second component based on the sensed electrical power-related parameter. The controller is further configured to drive the motor using the composite drive waveform. Also disclosed is a method of controlling the gaseous-fluid environmental sensor.
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