Sensor Wheel Braking for Mechanized Cart Retrieval Misuse
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Solution Overview
Problem
Existing cart containment systems are ineffective in detecting misuse, such as shopping cart theft or improper use, and lack the ability to monitor and manage the movement of non-motorized vehicles in real-time, leading to inefficiencies in cart retrieval and customer navigation within stores.
Innovation Solution
A system equipped with wheel assemblies that include sensor circuitry for detecting various events, coupled with a radio frequency (RF) transceiver for real-time data communication, allowing for the tracking of vehicle locations and statuses, and enabling the authorization or blocking of vehicle actions, such as locking wheels to prevent unauthorized exit or misuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing cart containment systems use simple wire-based detection, then the system cost is reduced, but the system cannot detect other types of shopping cart misuse such as theft or improper use during retrieval
Solution Approach 1:
The wheel assembly is designed to perform multiple functions: containing the cart within the store, detecting theft attempts, monitoring cart retrieval operations, and providing navigation assistance. By integrating sensor circuitry, RF transceivers, and braking mechanisms into a single wheel assembly, the system achieves multi-functionality without requiring separate systems for each purpose.
Solution Approach 2:
The patent combines previously separate functions into an integrated wheel assembly. The sensor circuitry, RF transceiver, braking mechanism, and power management are merged into a single unit housed within the wheel, reducing the need for multiple separate components and simplifying the overall system architecture.
2Productivity
If power-assisted cart retrieval units retrieve multiple carts simultaneously, then productivity is improved, but the risk of misuse such as pushing carts with locked or improperly oriented wheels increases
Solution Approach 1:
The wheel assembly includes sensor circuitry that continuously monitors the cart's status and provides feedback to the control system. This feedback mechanism detects when wheels are locked or improperly oriented, allowing the system to alert operators or automatically adjust retrieval operations to prevent damage and ensure safe operation.
Solution Approach 2:
The system performs preliminary checks before cart retrieval operations by monitoring wheel status in advance. The sensor circuitry detects potential issues such as locked wheels or improper orientations before the retrieval unit attempts to move the cart, preventing operational problems before they occur.
3Reliability
If the system implements real-time monitoring and authorization of vehicle actions, then misuse prevention is improved, but the device complexity increases due to additional sensor circuitry and communication systems
Solution Approach 1:
The patent integrates sensor circuitry, RF transceivers, braking mechanisms, and power management into a single wheel assembly. This merging of components reduces overall system complexity compared to having separate systems for each function, while still achieving real-time monitoring and authorization capabilities.
Solution Approach 2:
The wheel assembly operates autonomously by detecting its own status through integrated sensors and communicating with the central system via RF transceivers. The braking mechanism is automatically controlled based on system authorization, reducing the need for manual intervention and simplifying operation despite the integrated complexity.
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
The system effectively prevents unauthorized cart exit and misuse by monitoring cart movements and statuses in real-time, optimizing cart retrieval operations and enhancing customer navigation through targeted advertisements and improved store layout planning.
Implementation Method 1
a VLF (Very Low Frequency) signal detector for detecting signals used by conventional cart containment systems
Implementation Method 2
The wheel's sensor circuitry is coupled to a radio frequency (RF) transceiver system, which may but need not also be housed in the wheel or wheel assembly
Implementation Method 3
The wheel may also include a braking mechanism that can be actuated to lock the wheel from rotating
Data Source
AI summary
A vehicle tracking system includes a wheel containing sensor circuitry capable of sensing various types of conditions, such as wheel rotation, wheel vibration caused by skidding, and specific electromagnetic and/or magnetic signals indicative of particular wheel locations. The sensor circuitry is coupled to an RF transceiver, which may but need not be included within the wheel. The wheel may also include a brake mechanism. In one embodiment, the wheels are placed on shopping carts and are used to collect and monitor shopping cart status and location data via a wireless network. The collected data may be used for various purposes, such as locking the wheel of an exiting cart if the customer has not paid, estimating numbers of queued carts, stopping wheel skid events that occur during mechanized cart retrieval, store planning, and providing location-based messaging to customers.