Title:
SHOPPING CART SELF-TRACKING IN AN INDOOR ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO/2024/000395
Kind Code:
A1
Abstract:
A shopping cart's tracking system (190) determines a first baseline location of the shopping cart (120, 400) at a first timestamp with a wireless device located on the shopping cart (120, 400) detecting one or more external wireless devices (e.g., RFID tags) in the indoor environment. The shopping cart's tracking system (190) receives wheel motion data from one or more wheel sensors coupled to one or more wheels of the shopping cart (120, 400), wherein the wheel motion data describes rotation of the one or more wheels. The shopping cart's tracking system (190) calculates a translation traveled by the shopping cart (120, 400) from the first baseline location based on the wheel motion data. The shopping cart's tracking system (190) determines an estimated location of the shopping cart (120, 400) at a second timestamp based on the first baseline location and the translation. With the estimated location, the shopping cart (120, 400) can update a map with the estimated location of the shopping cart (120, 400).
Inventors:
GAO LIN (US)
HUANG YILIN (CN)
YANG SHIYUAN (CN)
ZHOU XIAOFEI (CN)
CHU KAIYANG (CN)
ZHU SIKUN (CN)
HUANG YILIN (CN)
YANG SHIYUAN (CN)
ZHOU XIAOFEI (CN)
CHU KAIYANG (CN)
ZHU SIKUN (CN)
Application Number:
PCT/CN2022/102796
Publication Date:
January 04, 2024
Filing Date:
June 30, 2022
Export Citation:
Assignee:
MAPLEBEAR INC (US)
International Classes:
G01C21/00
Domestic Patent References:
| WO2020242536A1 | 2020-12-03 | |||
| WO2016055815A1 | 2016-04-14 |
Foreign References:
| US20200017135A1 | 2020-01-16 | |||
| US20160023675A1 | 2016-01-28 | |||
| US20200219171A1 | 2020-07-09 | |||
| US10919555B1 | 2021-02-16 | |||
| US20180240554A1 | 2018-08-23 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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