Smart Shopping Cart Item Sorting for Faster Checkout

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Solution Overview

Problem

Existing shopping systems face challenges in efficiently managing and collating multiple items during checkout, especially in large retail environments, leading to inconvenience and potential adverse interactions between different types of items.

Innovation Solution

A multi-functional shopping cart equipped with a main storage, conveyor, gate, crane, and optical device, controlled by a computing device that detects and sorts items based on attributes, allowing efficient storage and checkout processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual item handling and collation is used during shopping, then customers have flexibility in item selection, but the checkout process becomes time-consuming and labor-intensive

Engineering Contradiction:
Improvecheckout efficiencyVSAvoidtime for item collation
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The shopping cart system performs self-service by automatically detecting items placed in the cart using optical scanners and weight sensors, autonomously recording them in the virtual cart database, and eliminating the need for manual item-by-item registration at checkout. The system serves itself by automatically tracking and managing the shopping list.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical item handling and collation with an automated electronic system. Optical scanners, weight sensors, and a computing device substitute for human hands and brains in detecting, identifying, and recording items, transforming a manual process into an automated electronic one.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If multiple types of items are stored together in a shopping cart, then convenience of carrying is improved, but adverse interactions between different items may occur

Engineering Contradiction:
Improveconvenience of carrying itemsVSAvoidadverse interactions between items
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system uses feedback from weight sensors and optical scanners to continuously monitor items in the cart. When potential adverse interactions are detected between certain item combinations, the system provides feedback to the customer through the user interface, alerting them to compatibility issues and suggesting alternatives.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The computing device acts as an intermediary between different items in the cart, analyzing their compatibility and mediating potential adverse interactions by providing warnings and recommendations to the customer before checkout, preventing harmful combinations from being finalized.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If automated item detection and sorting is implemented, then shopping efficiency is improved, but device complexity increases

Engineering Contradiction:
Improveshopping efficiencyVSAvoidcomplexity of cart system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The shopping cart system integrates multiple functions into a single universal platform: optical scanning for item detection, weight sensing for verification, database management for virtual cart creation, and compatibility analysis for item interactions. This multi-functionality consolidates what would otherwise require separate systems into one integrated cart.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The computing device serves as an intermediary that coordinates between various sensors (optical scanners, weight sensors), the database system, and the user interface. It mediates the complex interactions between different components, managing data flow and decision-making logic, which simplifies the overall system architecture despite the multiple functions involved.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates convenient, efficient, and safe shopping by automatically sorting and storing items based on attributes, enhancing the shopping experience by reducing manual effort and minimizing adverse interactions.

Implementation Method 1

an optical device configured to detect the items

Methodology Applied
Scientific EffectOptical detection: Reflection

Implementation Method 2

wherein the presence of items on the conveyor is detected by a weight sensor

Methodology Applied
Scientific EffectWeight detection: Gravitation

Data Source

PatentEP4351951B1Multi-functional shopping cart, system, and method for shopping
Publication Date: 2025.12.31 CHOUKSEY AVADH KISHOR
  • EP4351951B1 patent drawingFigure 1
  • EP4351951B1 patent drawingFigure 2
  • EP4351951B1 patent drawingFigure 3

AI summary

A multi-functional shopping cart (100) for shopping includes a main storage (102) adapted for storage of items; a top cover (110) disposed on top of, and fixedly coupled to the main storage; a gate (112) provided at the main storage; a crane (130) provided within the main storage and configured to pick up items from the gate and move them to a designated location; an optical device (122) configured to detect the items. The shopping cart further includes a computing device (202) configured to: detect the items; extract one or more attributes of the items; operate the gate to allow the items to enter the main storage; operate the crane to transport the items to their designated location; and transmit the one or more attributes and a log of operations to a central database (250).