Shopping Cart Conveyor Gated Access Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conveyor systems for shopping carts in multi-floor department stores face challenges in accommodating non-compliant carts and managing large volumes of consumers, leading to inefficiencies and inability to utilize multi-floor urban buildings.
Innovation Solution
A shopping cart conveyor system with a gate assembly, sensor, and controller that detects and authorizes compliant carts by unlocking the gate only when an authorized cart is present, using sensors like ultrasonic, optical, or RFID to prevent non-compliant carts from being loaded, and a drive mechanism to manage the gate's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conveyor is designed to accommodate only specific shopping cart designs, then the conveyor can function properly with authorized carts, but non-compliant carts cannot be accommodated leading to reduced system adaptability
Solution Approach 1:
The patent introduces a gate assembly as an intermediary component between the conveyor system and shopping carts. The gate acts as a mediator that selectively permits or blocks access to the conveyor based on whether the cart possesses the required engagement bracket, thus maintaining conveyor reliability while providing a mechanism for adaptability control
Solution Approach 2:
The shopping cart itself is made responsible for identifying its compliance through the engagement bracket feature. The cart's own design elements (presence or absence of engagement bracket) determine its ability to access the conveyor, eliminating the need for complex external verification systems
2Reliability
If a gate assembly with lock and sensor is added to control cart access, then non-compliant carts are prevented from entering the conveyor, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical verification systems with sensor-based detection (optical, ultrasonic, RFID, or mechanical sensors) that can automatically identify the engagement bracket on compliant carts. This substitution reduces mechanical complexity while maintaining reliable authorization control
Solution Approach 2:
The gate assembly serves multiple functions: it acts as a physical barrier, a sensor detection station, and a controlled access point. By combining these functions into a single integrated component, the system achieves high reliability without proportionally increasing overall device complexity
3Reliability
If the gate is secured with a lock to prevent unauthorized access, then security is improved, but the ease of operation decreases due to additional locking mechanisms
Solution Approach 1:
The lock mechanism is designed to be automatically controlled by the sensor system. When a compliant cart is detected, the sensor triggers the lock to release automatically, allowing the gate to open without manual intervention. This eliminates the need for operators to manually operate locks while maintaining security
Solution Approach 2:
The system incorporates feedback control where the sensor detects the presence of a compliant cart and automatically signals the lock to release. This closed-loop feedback mechanism ensures the gate only opens when appropriate, maintaining security while simplifying operation for authorized carts
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
Ensures efficient and secure movement of authorized shopping carts between floors, preventing unauthorized carts from entering the system and enhancing operational capacity in crowded environments.
Implementation Method 1
an ultrasonic sensor, an optical sensor, a radar sensor, an infrared sensor, an RFID reader, a magnetic sensor, and a mechanical sensor
Implementation Method 2
an ultrasonic sensor, an optical sensor, a radar sensor, an infrared sensor, an RFID reader, a magnetic sensor, and a mechanical sensor
Implementation Method 3
an ultrasonic sensor, an optical sensor, a radar sensor, an infrared sensor, an RFID reader, a magnetic sensor, and a mechanical sensor
Data Source
AI summary
A shopping cart conveyor that inhibits the loading of a non-compliant shopping cart onto the conveyor. In one aspect, the invention provides a conveyor comprising a track operable to guide the shopping cart between a first location and a second location, a gate assembly including a door movable between a closed position inhibiting entry to the track and an open position allowing entry to the track, a lock for securing the door in the closed position, and a sensor (e.g., an ultrasonic sensor, an optical sensor, a radar sensor, an infrared sensor, an RFID reader, a magnetic sensor, and a mechanical sensor) positioned to detect the presence of a shopping cart. In another aspect, the conveyor is configured to move the gate from the closed position to the open position when the sensor detects the presence of a shopping cart. Preferably this is done using a drive mechanism coupled to the gate.