Vending Machine Display Bar With Dynamic LCD Price Indication
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Solution Overview
Problem
Existing vending machines face issues with accurate price indication, lack of information on product availability, and limited user feedback due to static display systems, which can lead to errors and inefficiencies, especially in low-light conditions.
Innovation Solution
A vending machine equipped with a display bar featuring multiple LCD displays connected to a control unit, allowing dynamic price updates and product availability information, along with user confirmation and highlighting features to address selection restraints, utilizing ambient lighting and color/intensity variations for clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static segmented labels are used for price indication, then the device structure is simple, but the accuracy of price information is poor and errors occur frequently
Solution Approach 1:
The patent replaces static mechanical segmented labels with electronic LCD displays controlled by a microprocessor. The display bar contains multiple LCD segments that can be dynamically controlled to show accurate price information, product availability, and selection confirmations, eliminating the inaccuracies of static labels while maintaining a relatively simple overall structure.
Solution Approach 2:
The display system automatically updates price information and product availability status without manual intervention. The microprocessor reads product data from memory and controls the LCD segments to display current information, enabling the system to self-update and eliminate human error in price indication.
2Loss of information
If static display devices are used, then the device complexity is low, but the information completeness is insufficient as they cannot show temporary unavailability
Solution Approach 1:
The patent implements a dynamic display system where LCD segments can be selectively activated or deactivated based on real-time product availability. When a product is temporarily unavailable, the corresponding display segments automatically update to reflect this status, providing complete and current information without requiring a complex additional notification system.
Solution Approach 2:
The system incorporates feedback mechanisms where the microprocessor continuously monitors product availability status and automatically updates the display bar accordingly. This closed-loop information flow ensures that the display always reflects the current state of product availability, preventing information loss while keeping the system architecture straightforward.
3Illumination intensity
If no illumination system is provided, then the device complexity and energy consumption are low, but the visibility of information in low-light conditions is poor
Solution Approach 1:
The patent utilizes the inherent properties of LCD technology which can display information with minimal energy consumption. The LCD segments can be illuminated by ambient light or a low-power backlight, and the display can also utilize reflective properties to enhance visibility without requiring high energy input, thus achieving good visibility while maintaining low energy consumption.
4Reliability
If static price labels are used, then the manufacturing cost is low, but the reliability of price information matching the control electronics is poor
Solution Approach 1:
The patent replaces manual or static price labeling with an electronically controlled display system. The microprocessor reads price information directly from the product database or memory, ensuring that the displayed price always matches the control electronics' recorded price. This digital integration eliminates discrepancies between physical labels and electronic pricing, significantly improving information consistency.
Solution Approach 2:
The system implements automatic verification where the microprocessor continuously ensures that the display bar shows prices that match the internal database. This feedback mechanism detects and corrects any potential discrepancies, ensuring reliable and consistent price information without requiring complex manual verification procedures.
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 solution provides accurate and clear product information, including price and availability, enhancing user experience by reducing errors and improving usability, especially in low-light conditions, while ensuring compliance with temporal and authorization-based sales restrictions.
Implementation Method 1
A vending machine equipped with a display bar featuring multiple LCD displays connected to a control unit
Implementation Method 2
utilizing ambient lighting and color/intensity variations for clarity
Data Source
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AI summary
The present invention concerns a vending machine accessory comprising one or more trays (8) with at least one housing for receiving a product to be dispensed, said vending machine comprising at least one display located in the proximity of said housing, in such a position as to be visible from an external user, a vending machine comprising such accessory and a method of operating same.