Sumitomo has been granted a patent for an azimuth/attitude angle measuring device that utilizes an angular velocity sensor with interchangeable control functions. The device features a control unit that manages the sensor’s operational states to detect angular velocity through primary and secondary vibration mechanisms. GlobalData’s report on Sumitomo gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Sumitomo, Bioethanol production GMOs was a key innovation area identified from patents. Sumitomo's grant share as of June 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.
Azimuth/attitude angle measuring device with interchangeable sensor functions
The granted patent US11982532B1 describes an innovative azimuth/attitude angle measuring device that incorporates a first angular velocity sensor and a control unit. The sensor features a vibrator, a primary side control circuit with a closed control loop, and a secondary side control circuit designed to detect secondary vibrations caused by angular velocity. Notably, the primary and secondary control circuits are interchangeable, allowing the control unit to switch between two operational states. In the first state, the device detects angular velocity while interchanging the functions of the control circuits, whereas in the second state, it detects angular velocity without such interchanges. This dual functionality enhances the device's versatility in various applications.
Further claims detail the device's capabilities, including the integration of multiple switch elements to facilitate the interchange of control functions, as well as the ability to adjust detection ranges and frequency bands based on stationary or motion states. The control unit can also correct sensor output fluctuations due to temperature changes. Additionally, the patent outlines configurations for one or more additional angular velocity sensors, enabling bias component acquisition based on comparative detection results. The device is designed to function as both a gyro compass in one state and an inertial navigation device in another, showcasing its potential for diverse navigational applications.
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