公开(公告)号：US10132647B2

公开(公告)日：2018-11-20

申请号：US14522712

申请日：2014-10-24

Applicant: MTD Products, Inc.

Inventor： Edward John Blanchard

IPC: G01C25/00

Abstract: The present disclosure describes systems and methods for maintaining gyroscopic sensor accuracy over time and across changing environmental conditions. In certain aspects, the present disclosure provides arrangements and methods for calibrating a gyroscope while it is positioned on a robotic platform. In particular, the gyroscope may positioned on a sensor platform that is moved through a series of known or measured rotations and then the gyroscope signals are compared to reference data and the sensor's gain and offset calculated. In other aspects, the present disclosure provides arrangements and methods for utilizing measurements from multiple gyroscopes that measure the same axis of rotation.

公开(公告)号：US11039518B2

公开(公告)日：2021-06-15

申请号：US16712001

申请日：2019-12-12

Applicant: MTD PRODUCTS INC

Inventor： Edward John Blanchard

IPC: H05B45/10 ,  H05B45/44 ,  H05B45/50 ,  H05B45/54 ,  G01R31/26

Abstract: An illumination mechanism includes a plurality of LEDs for illuminating a surface and is configured to determine whether one of the plurality of LEDs has faulted. A pair of LED sets is provided with the sets electrically connected in parallel via terminal connections of each set of LEDs. Regardless of at least one of environmental temperature or minor differences in minimum forward voltages of individual LEDs, the mechanism is configured to discern whether at least a single LED of one set of LEDs of the pair has faulted. In instances where the sets of LEDs are separated from a controller or voltage measurement circuitry, the cost, circuit board real estate consumption, and manufacturing complexity associated with additional wiring and connections are minimized.

公开(公告)号：US20150114082A1

公开(公告)日：2015-04-30

申请号：US14522712

申请日：2014-10-24

Applicant: MTD Products, Inc.

Inventor： Edward John Blanchard

IPC: G01C25/00

CPC classification number: G01C25/005 ,  G01C25/00

Abstract: The present disclosure describes systems and methods for maintaining gyroscopic sensor accuracy over time and across changing environmental conditions. In certain aspects, the present disclosure provides arrangements and methods for calibrating a gyroscope while it is positioned on a robotic platform. In particular, the gyroscope may positioned on a sensor platform that is moved through a series of known or measured rotations and then the gyroscope signals are compared to reference data and the sensor's gain and offset calculated. In other aspects, the present disclosure provides arrangements and methods for utilizing measurements from multiple gyroscopes that measure the same axis of rotation.

Abstract translation: 本公开描述了用于在不断变化的环境条件下保持陀螺仪传感器精确度的系统和方法。 在某些方面，本公开提供了一种用于在陀螺仪定位在机器人平台上时校准陀螺仪的布置和方法。 特别地，陀螺仪可以定位在传感器平台上，该传感器平台通过一系列已知或测量的旋转运动，然后将陀螺仪信号与参考数据进行比较，并计算传感器的增益和偏移量。 在其他方面，本公开提供了用于利用测量相同旋转轴线的多个陀螺仪的测量的布置和方法。