首页|Patent Issued for Magnetic sensing system, detection device, and magnetic interference offset method (USPTO 11879792)
Patent Issued for Magnetic sensing system, detection device, and magnetic interference offset method (USPTO 11879792)
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According to news reporting originating from Alexandria, Virginia, by NewsRx journalists, a patent by the inventors Schmitz, Alexander (Tokyo, JP), Somlor, Sophon (Tokyo, JP), Sugano, Shigeki (Tokyo, JP), Tomo, Tito Pradhono (Tokyo, JP), filed on January 31, 2020, was published online on January 23, 2024. The assignee for this patent, patent number 11879792, is Xela Robotics Co. Ltd. (Tokyo, Japan). Reporters obtained the following quote from the background information supplied by the inventors: “BACKGROUND ART “Robots that perform predetermined work while coexisting with humans are provided with various sensors for when a person or object present in the environment around the robot contacts the robot, such as force sensors that detect external forces such as pressing force and shear force acting on the contacted portion, and displacement sensors that detect the displacement of the contacted portion. Additionally, the motion of the robot is controlled on the basis of detected values from these various sensors. Known examples of these sensors are magnetic force sensors and displacement sensors using changes in a magnetic field in response to the action of an external force. Each magnetic sensor is provided with a displacement unit containing an elastic body or the like that is displaced by the action of an external force, a permanent magnet affixed to the displacement unit, and a magnetic sensor that detects the state of a measurement magnetic field generated by the permanent magnet. In each of these magnetic sensors, the permanent magnet is displaced as one with the displacement unit according to the magnitude of the acting external force, and by using the change in the strength of the magnetic field measured by the magnetic sensor in response to the displacement, the magnitude of the external force acting on the displacement unit and the displacement of the displacement unit are detected.
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