Low power sensor with energy harvesting
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United States of America
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Mar 25, 2025
Grant Date -
Dec 7, 2023
app pub date -
Jun 7, 2022
filing date -
Jun 7, 2022
priority date (Note) -
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Abstract
A sensor assembly includes a housing, a sensor, and a transmitter. A power supply is configured to power the sensor assembly. A light harvesting element is configured to convert incident light into electrical energy for replenishing the power stored by the power supply. A controller activates and deactivates the sensor in accordance with a first activation schedule. The controller monitors a power reserve parameter of the power supply. When the power reserve parameter drops below a first power reserve threshold, the controller alters the activation schedule to a second activation schedule for the sensor that reduces power consumption from the power supply. After the light harvesting element replenishes the power stored by the power supply above a second power reserve threshold, the controller alters the activation schedule to return to the first activation schedule.
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