Subaru has patented a vehicular self-diagnosis device that uses sensors to detect steering angle, vehicle behavior, and lane curvature for steering control. The device calculates maximum divergence among sensor data to identify inconsistencies and enable corrective steering control. GlobalData’s report on Subaru 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 Subaru, Battery management systems was a key innovation area identified from patents. Subaru's grant share as of January 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.

Vehicular self-diagnosis device for steering control inconsistency detection

Source: United States Patent and Trademark Office (USPTO). Credit: Subaru Corp

A newly granted patent (Publication Number: US11884321B2) details a vehicular self-diagnosis device designed to enhance steering control by detecting inconsistencies among various sensors. The device includes three sensors: one for steering angle detection, another for vehicle behavior, and a third for lane curvature and vehicle-versus-lane yaw angle. These sensors are connected to processors and memories storing instructions for estimating different turn statuses of the vehicle based on sensor data. The device then calculates offset components, determines maximum divergence amounts, and identifies inconsistencies among sensors when thresholds are exceeded. In such cases, the device intervenes in steering operations to ensure the vehicle stays within lane boundaries.

Furthermore, the patent outlines additional features of the vehicular self-diagnosis device, such as ensuring that the turn statuses have identical units and dimensions, with lateral acceleration being a key parameter. The offset components are generated through a low-pass filter circuit to maintain accuracy. The device's ability to detect inconsistencies among sensors and adjust steering control accordingly showcases its potential to enhance vehicle safety and performance. By integrating sensor data and processor capabilities, the device offers a comprehensive solution for monitoring and optimizing steering operations based on real-time data analysis.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.