Speed control system for an autonomous mobile device
US11989026B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2021 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Jun 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D2111/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An autonomous mobile device (AMD) may perform tasks within a physical space. The AMD may move over ramps, bumps, or navigate around obstacles. The AMD may have an inertial measurement unit (IMU) and distance sensors. The IMU provides tilt information indicative of the AMD being on a flat surface or a ramp. The distance sensors provide information on distances between the AMD and surrounding obstacles. Using IMU measurements, the AMD determines a first speed limit that is safe given the tilt of the AMD. Using the distance sensors, the AMD determines a second speed limit that is safe given a distance to an obstacle. The AMD determines a maximum speed based on the first and second speed limits. Based on the maximum speed, the AMD determines whether to adjust a current speed and by how much.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.