Hybrid height and location estimation in RTLS
US10094922B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2015 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Oct 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position location system and method, the system including: an infrared (IR) transmitter, a first and a second ultrasound (US) transmitter, the first and a second US transmitters arranged at respective predetermined distances from a reference plane, an IR receiver configured to receive an IR signal from the IR transmitter, a US receiver configured to receive a first US signal from the first US transmitter and a second US signal from the second US transmitter; and a processor coupled to a memory and further coupled to the IR receiver and the US receiver, the processor configured to detect: a time of flight (ToF) of the first US signal from the first US transmitter to the US receiver; and a ToF of the second US signal from the second US transmitter to the US receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.