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US 12,546,874 B2Granted
Method, system and computer program product for distance determination between persons
AssigneeRombit NV
InventorsNico Janssens, Brett Daman
Life of this patent
Estimating the term…
Abstract
A method, system, and computer program product for determining a distance between persons by means of a plurality of battery powered devices each include using ultra-wideband (UWB) tags and UWB anchors, wherein battery powered devices are configured to periodically or quasiperiodically repeat a typical operating pattern, and upon receipt of an announcing signal from a first device by a second device, initiate an atypical operating pattern to determine the distance.
Claims19
A method for determining a distance between persons, comprising:
- providing a plurality of devices, each associated with a person and each comprising a battery, ultra-wideband (UWB) tag and UWB anchor, the UWB tag and the UWB anchor being energized by the battery and the UWB anchor being substantially disabled;
- wherein each of the plurality of devices is configured to periodically or quasiperiodically repeat a typical operating pattern;
- the typical operating pattern comprising the steps of:
- enabling the UWB anchor during an announcing period;
- transmitting an announcing signal of the UWB tag comprising an indication of a transmission time;
- and transmitting a ranging signal at the transmission time;
- wherein, when an announcing signal from a first device is received on a second device during an announcing period of this second device, the second device initiates an atypical operation pattern;
- the atypical operating pattern, comprising the steps of:
- determining an anchor wake-up period for the second device based on the transmission time of the received announcing signal;
- enabling the UWB anchor of the second device during the determined anchor wake-up period;
- and receiving the ranging signal on the second device during the determined anchor wake-up period;
- wherein a distance between the first device and the second device is determined based on the ranging signal from the first device, which is received on the second device.
9 more elements
A system for determining a distance between persons, comprising:
- a plurality of devices, each associated with a person and each comprising a battery, ultra-wideband (UWB) tag and UWB anchor, the battery configured to power the UWB tag and the UWB anchor and wherein the UWB anchor is substantially disabled;
- wherein each of the plurality of devices is configured to periodically or quasiperiodically repeat a typical operating pattern;
- the typical operating pattern configured for:
- enabling the UWB anchor during an announcing period;
- transmitting an announcing signal of the UWB tag comprising an indication of a transmission time;
- and transmitting a ranging signal at the transmission time;
- wherein a second device is configured to initiate an atypical operating pattern when an announcing signal from a first device is received on the second device during an announcing period of this second device;
- the atypical operating pattern configured for:
- determining an anchor wake-up period for the second device based on the transmission time of the received announcing signal;
- enabling the UWB anchor of the second device during the determined anchor wake-up period;
- and receiving the ranging signal on the second device during the determined anchor wake-up period;
- wherein the system is configured to determine a distance between the first device and the second device based on the ranging signal from the first device received on the second device.
9 more elements
Dependencies are inferred from the claim text.