Determination of resonant frequency and quality factor for a sensor system

    公开(公告)号:US11868540B2

    公开(公告)日:2024-01-09

    申请号:US17096598

    申请日:2020-11-12

    Inventor: Ryan Hellman

    CPC classification number: G06F3/0202 G01L1/005 G01L1/14 G01L1/162 G01L1/183

    Abstract: A method for determining sensor parameters of an actively-driven sensor system may include obtaining as few as three samples of a measured physical quantity versus frequency for the actively-driven sensor system, performing a refinement operation to provide a refined version of the sensor parameters based on the as few as three samples and based on a linear model of an asymmetry between slopes of the measured physical quantity versus frequency between pairs of the as few as three samples, iteratively repeating the refinement operation until the difference between successive refined versions of the sensor parameters is below a defined threshold, and outputting the refined sensor parameters as updated sensor parameters for the actively-driven sensor system.

    Pneumatic tire comprising a device for measuring a mechanical force and use of the device

    公开(公告)号:US11821799B2

    公开(公告)日:2023-11-21

    申请号:US17045218

    申请日:2019-03-13

    CPC classification number: G01L1/005 B60C19/00 B60C2019/004 H02J7/00

    Abstract: The invention relates to a tire comprising an apparatus, wherein the apparatus comprises a first, second, third, fourth and fifth layer, the third layer being optional, characterized in that: a) the first layer comprises a first electrode material, b) the second layer comprises a first intermediate material, c) the third layer comprises an insulation material, d) the fourth layer comprises a second intermediate material, and e) the fifth layer comprises a second electrode material, wherein the first intermediate material of the second layer and the second intermediate material of the fourth layer are different, the five layers are arranged one above the other according to the above sequence, and the surface of the second or fourth layer layers has a surface roughness Ra in the range from 0.1 μm to 500 μm, measured in accordance with DIN EN ISO 4288:1998. The invention relates to the uses of the apparatus.

    Micro electro-mechanical strain displacement sensor and system for monitoring health and usage of a structure

    公开(公告)号:US11714012B2

    公开(公告)日:2023-08-01

    申请号:US16855397

    申请日:2020-04-22

    Applicant: Paul D Okulov

    Inventor: Paul D Okulov

    Abstract: A low power consumption multi-contact micro electro-mechanical strain/displacement sensor and miniature autonomous self-contained systems for recording of stress and usage history with direct output suitable for fatigue and load spectrum analysis are provided. In aerospace applications the system can assist in prediction of fatigue of a component subject to mechanical stresses as well as in harmonizing maintenance and overhauls intervals. In alternative applications, i.e. civil structures, general machinery, marine and submarine vessels, etc., the system can autonomously record strain history, strain spectrum or maximum values of the strain over a prolonged period of time using an internal power supply or a power supply combined with an energy harvesting device. The sensor is based on MEMS technology and incorporates a micro array of flexible micro or nano-size cantilevers. The system can have extremely low power consumption while maintaining precision and temperature/humidify independence.

    Insertion force measurement system
    230.
    发明授权

    公开(公告)号:US11644375B2

    公开(公告)日:2023-05-09

    申请号:US17010905

    申请日:2020-09-03

    CPC classification number: G01L5/225 G01L1/005 G01L1/083

    Abstract: In accordance with an exemplary embodiment, a measurement device is provided that includes an actuator module, a control module, a load cell module, a processing module, and a notification module. The actuator module includes an actuator. The control module includes one or more actuator controllers configured to control the actuator. The load cell module includes one or more motors configured to set orientation of attachments points for the actuator with respect to a component relative to a location of a user. The processing module includes a processor configured to receive and analyze information from the load cell module pertaining to an insertion force for the component. The notification module is configured to provide a notification based on the analyzing performed by the processing module.

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