Techniques for temperature measurement according to a calibrated temperature
Inventors
Vallius, Tero Juhani • Järvelä, Jussi Petteri • Tiensuu, Ville Olavi • Pelkonen, Sami Seppo
Assignees
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Publication Number
US-12484789-B2
Publication Date
2025-12-02
Expiration Date
Abstract
Methods, systems, and devices for temperature calibration are described. A device may support temperature calibration for a set of temperature sensors. For example, a wearable device may activate a set of temperature sensors associated with the wearable device. The set of temperature sensors may include a primary temperature sensor and one or more secondary temperature sensors. The wearable device may determine a trigger to calibrate the one or more secondary temperature sensors based on one or more conditions, and calibrate the one or more secondary temperature sensors using the primary temperature sensor based on the trigger. Based on the calibrating, the wearable device may process temperature data associated with a user that is received from one or more of the primary temperature sensor or the one or more secondary temperature sensors.
Core Innovation
The wearable device uses at least a primary temperature sensor and a plurality of secondary temperature sensors to perform temperature calibration. The primary temperature sensor is positioned within or beneath a surface of the wearable device in a first position to collect skin temperature data from a first location of a tissue of a user, and each secondary temperature sensor is positioned within or beneath the surface of the wearable device in at least a respective second position to collect skin temperature data from a respective second location of the tissue of the user.
A trigger to calibrate the plurality of secondary temperature sensors is determined based at least in part on one or more conditions, and the primary temperature sensor and the plurality of secondary temperature sensors are activated based at least in part on the trigger. After acquiring first skin temperature data via the primary temperature sensor and second skin temperature data via the plurality of secondary temperature sensors, the device calibrates the plurality of secondary temperature sensors in response to the trigger using the primary temperature sensor, the first skin temperature data, and the second skin temperature data, including adjusting a respective temperature measurement sampling interval of each secondary temperature sensor.
Following calibration, additional skin temperature data is acquired via at least the plurality of secondary temperature sensors based at least in part on calibrating the plurality of secondary temperature sensors. The device determines a plurality of sleep stages of the user based at least in part on the additional skin temperature data, where the plurality of sleep stages comprise one or more of an awake sleep stage, a rapid eye movement sleep stage, a light sleep stage, and a deep sleep stage. The device displays an indication of the plurality of sleep stages via a graphical user interface of a user device associated with the wearable device.
Claims Coverage
Three independent claims are present: a method of temperature calibration for a wearable device, a wearable ring device structure and operation, and a non-transitory computer-readable medium storing code for the temperature calibration workflow. Across these independent claims, the core coverage is a primary sensor used to calibrate multiple secondary sensors upon a trigger, followed by sleep-stage determination from additional skin temperature data and display via a graphical user interface, with calibration including adjustment of sampling interval.
Trigger-based calibration using primary and secondary skin temperature data
Determining a trigger to calibrate the plurality of secondary temperature sensors based at least in part on one or more conditions, activating the primary temperature sensor and the plurality of secondary temperature sensors based at least in part on the trigger, and acquiring first skin temperature data via the primary temperature sensor and second skin temperature data via the plurality of secondary temperature sensors based at least in part on the activating.
Sampling interval adjustment during secondary sensor calibration
Calibrating, in response to the trigger, the plurality of secondary temperature sensors using the primary temperature sensor, the first skin temperature data, and the second skin temperature data, wherein calibration comprises adjusting a respective temperature measurement sampling interval of each secondary temperature sensor.
Sleep stage determination and graphical display from post-calibration skin temperature data
Acquiring additional skin temperature data from the user via at least the plurality of secondary temperature sensors based at least in part on calibrating the plurality of secondary temperature sensors, determining a plurality of sleep stages of the user based at least in part on the additional skin temperature data (awake, rapid eye movement, light, and deep), and displaying via a graphical user interface of a user device associated with the wearable device an indication of the plurality of sleep stages.
Wearable ring geometry with primary and secondary sensors at different radial positions
Providing a wearable ring device with a primary temperature sensor located at a first radial position on or within an inner curved surface of the wearable ring device and a plurality of secondary temperature sensors each located at a respective second radial position on or within the inner curved surface, to collect skin temperature data from a first location and respective second locations of tissue of a user.
The independent claims collectively cover a calibration workflow in which a trigger based on one or more conditions initiates activation of a primary sensor and multiple secondary sensors, calibration of the secondary sensors uses the primary and acquired skin temperature data, calibration includes adjusting the sampling interval for each secondary sensor, and post-calibration skin temperature data is used to determine sleep stages and display an indication via a graphical user interface. A dedicated independent claim further grounds this workflow in a wearable ring device configuration with sensors at different radial positions on or within the inner curved surface.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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