Hardware-based time synchronization for heterogeneous sensors in autonomous vehicles
US12113885B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 26, 2021 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | May 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/485
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices, systems, and methods for hardware-based time synchronization for heterogenous sensors are described. An example method includes generating a plurality of input trigger pulses having a nominal pulse-per-second (PPS) rate, generating, based on timing information derived from the plurality of input trigger pulses, a plurality of output trigger pulses, and transmitting the plurality of output trigger pulses to a sensor of a plurality of sensors, wherein a frequency of the plurality of output trigger pulses corresponds to a target operating frequency of the sensor, wherein, in a case that a navigation system coupled to the synchronization unit is functioning correctly, the plurality of input trigger pulses is generated based on a nominal PPS signal from the navigation unit, and wherein, in a case that the navigation system is not functioning correctly, the plurality of input trigger pulses is generated based on a simulated clock source of the synchronization unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.