Vending Machine Settlement System with Automatic Door Closure
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Solution Overview
Problem
Conventional vending machine systems fail to execute the settlement process if the door is not closed, allowing unauthorized access and potential theft when users forget to close the door.
Innovation Solution
A settlement processing system with detection units for door opening and closing, user presence, and product identification, along with information acquisition and settlement processing units, ensures secure settlement even if the door remains open, including automatic door closure mechanisms to prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the settlement process is executed only when the door is closed, then the system simplicity is maintained, but the reliability of settlement is compromised when users forget to close the door
Solution Approach 1:
The system performs preliminary detection of user presence and product pickup before the door closing action. The detection units monitor whether a user has picked up a product while the door is open, and the control unit prepares the settlement process in advance, so that settlement can be executed reliably even if the door is not closed by the user.
Solution Approach 2:
The system implements feedback through detection units that continuously monitor door status, user presence, and product pickup status. This feedback information is transmitted to the control unit, which adjusts the settlement process accordingly - executing settlement when the door is closed or when user absence is detected, ensuring reliable settlement under various conditions.
2Ease of operation
If the door remains open for settlement processing, then user convenience is improved, but unauthorized access and product theft become possible
Solution Approach 1:
The detection units provide real-time feedback on user presence and door status. When the user moves away from the vending machine while the door is open, the system detects this absence and automatically executes settlement, allowing the door to remain open for user convenience while preventing unauthorized access through automated monitoring and control.
Solution Approach 2:
The system performs self-service by automatically detecting user absence and executing the settlement process without requiring the user to manually close the door. This automated self-service mechanism maintains security while improving ease of operation, as the system handles the settlement initiation and execution autonomously based on detected conditions.
3Reliability
If multiple detection units and automatic door closure mechanisms are added, then security against unauthorized access is improved, but the device complexity increases
Solution Approach 1:
The detection units serve multiple functions: detecting door open/close status, monitoring user presence, and identifying product pickup. The control unit integrates these various detection functions and coordinates settlement execution and door closure, achieving high security through multi-functionality rather than through numerous separate components, thus managing device complexity.
4Productivity
If the settlement process waits for door closure, then system simplicity is maintained, but loss of time occurs when users forget to close the door
Solution Approach 1:
The system performs preliminary detection of product pickup and user presence while the door is open, preparing the settlement data in advance. When user absence is detected or the door is closed, the pre-prepared settlement information allows immediate processing, eliminating delays and improving settlement processing speed without requiring the system to wait passively for door closure.
Data Source
AI summary
A settlement processing system S is configured to perform a settlement process for a product picked up by a user based on information for settlement of the user, when closing of a door 12 of a vending machine 1 is detected after opening of the door 12 is detected. In addition, the settlement processing system S is configured to perform the settlement process for the product picked up by the user based on the information for settlement of the user, in a state in which the closing of the door 12 of the vending machine 1 is not detected after the opening of the door 12 is detected, when the state in which the user has moved from the vending machine 1 is detected.