Shopping Cart Registration Alert Timing via Weight and Motion Sensors
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Solution Overview
Problem
Existing shopping cart systems using information processing apparatuses like tablets and smartphones for self-service registration often notify users of registration mismatches at inappropriate times, leading to unnecessary errors and user inconvenience.
Innovation Solution
A shopping cart system equipped with a weight sensor, movement sensor, and code scanner, which detects changes in weight and movement to determine if a commodity code has been read within a predetermined time, and if not, displays a registration alert screen only when the cart has reached a certain movement condition, ensuring timely notifications for registration and deregistration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system notifies users of registration mismatches immediately when detected, then the registration accuracy is improved, but the user experience deteriorates due to inappropriate timing and unnecessary error alerts
Solution Approach 1:
The system performs preliminary monitoring of weight changes and code reading status without immediately notifying the user. It waits for a predetermined condition (cart movement detection) before issuing the notification, ensuring that the alert is only shown when the user has likely finished shopping and is ready to checkout, thus avoiding premature interruptions during the shopping process
Solution Approach 2:
The notification timing is made dynamic by detecting cart movement status. The system adapts its behavior based on real-time sensor data: it monitors weight and code reading continuously but only triggers notifications when the cart is stationary or movement is detected, rather than using a fixed timing mechanism. This dynamic approach ensures notifications occur at appropriate moments in the user's shopping journey
2Measurement precision
If the system monitors weight and code reading continuously, then the registration accuracy is improved, but the notification timing becomes inappropriate causing unnecessary alerts
Solution Approach 1:
The system continuously monitors weight and code reading status as preliminary actions, but delays the notification until a predetermined condition is met. This preliminary monitoring phase allows the system to detect mismatches early while waiting for the appropriate moment to notify the user, preventing both premature and delayed notifications
Solution Approach 2:
The system uses feedback from movement sensors to determine the appropriate timing for notifications. By continuously monitoring cart movement status and using this feedback to control when notifications are issued, the system ensures that alerts are timed correctly based on actual user behavior rather than fixed time intervals
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
This solution ensures proper timing for notifications, reducing unnecessary error alerts and improving user experience by waiting until it is certain that a commodity has been registered or deregistered before alerting the user, thus avoiding errors during movement or when items are placed back in the cart.
Implementation Method 1
a weight sensor, which detects a weight of the cart body
Implementation Method 2
a movement sensor, which detects movement of the cart body
Data Source
AI summary
An information processing apparatus for commodity registration includes a cart body, a weight sensor, a movement sensor, a code scanner, a display, and a control circuit. The control circuit is configured to detect change of a weight according to the weight sensor. Upon detecting the weight change, the control circuit determines whether the code scanner has read a commodity code within a predetermined time period before or after the weight change. If the code scanner has not read a commodity code within the predetermined time period, it is determined whether or not movement of the cart body, as detected by the movement sensor, satisfies a predetermined condition. If the movement satisfies the predetermined condition, the control circuit controls the display to display a registration alert screen.