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US 12,613,329 B2Granted
Ultra-wide band device and ultra-wide band ranging method using the same
AssigneeHyundai Mobis Co., Ltd.
InventorJong Chul Lim
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Abstract
Disclosed is an ultra-wide band (UWB) device. The UWB device includes a memory configured to store instructions, a communication system, and processors that execute the instructions to perform ranging through UWB with another UWB device to determine multiple ranging results, and correct the multiple ranging results by adjusting a deviation between the multiple ranging results.
Claims15
An ultra-wide band (UWB) device, the UWB device comprising:
- a memory configured to store one or more instructions;
- a communication system;
- and
- one or more processors configured to execute the one or more instructions to:
- perform ranging through UWB with another UWB device to determine a plurality of ranging results;
- and
- correct the plurality of ranging results by adjusting a deviation between the plurality of ranging results,
- wherein the one or more processors are further configured:
- to apply an exponential smoothing method to the plurality of ranging results to adjust the deviation between the plurality of ranging results, and
- to adjust the deviation between the plurality of ranging results according to:
- Yn=an*Xn+(1−an)*Yn-1,
- wherein Yn denotes a corrected current ranging result value, an denotes a weight value, Xn denotes a current ranging result value before correction, and Yn-1 denotes a previous ranging result value before correction.
9 more elements
An ultra-wide band (UWB) ranging method comprising:
- performing ranging through UWB with another UWB device to generate a ranging result;
- correcting the ranging result by adjusting a deviation between a plurality of ranging results calculated according to the ranging;
- applying an exponential smoothing method to the plurality of ranging results to adjust a deviation between the plurality of ranging results;
- performing, after the performing of the ranging, data communication with an upper-level controller to transmit the ranging result;
- and
- receiving a localization result from the upper level controller,
- wherein the correcting of the ranging result includes adjusting a weight applied to the exponential smoothing method according to a position of the digital key using the localization result.
4 more elements
Dependencies are inferred from the claim text.