Furniture
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Solution Overview
Problem
Existing self-service food storage furniture, particularly for baked goods, faces hygiene issues due to direct customer contact and inefficiencies in monitoring fill levels, freshness, cleanliness, and maintenance, leading to potential contamination and increased staff time for assessment.
Innovation Solution
The furniture features transparent flaps with motorized drives operated by capacitive sensors outside the unit, allowing contactless opening and closing, with electronic circuits for simultaneous flap control, automatic closure, obstacle detection, and remote operation, along with LED lighting for status indication and remote monitoring for maintenance and inventory management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If customers directly touch handles or elements to open flaps, then ease of operation is improved, but hygiene deteriorates due to contamination risks
Solution Approach 1:
A capacitive sensor field acts as an intermediary between the customer and the flap opening mechanism. The sensor detects the customer's approach or touch without requiring direct contact with the flap handle, triggering the motorized opening action remotely. This mediator eliminates the harmful direct contact while preserving ease of operation.
Solution Approach 2:
The manual mechanical opening system (customer physically pulling the flap) is replaced with an automated motorized system controlled by capacitive sensors. The motorized drive unit opens the flap automatically when the sensor detects customer presence, substituting mechanical direct contact with an automated control system that maintains hygiene.
2Measurement precision
If staff manually monitor fill levels, freshness, and cleanliness, then measurement precision is improved, but loss of time increases due to frequent checking
Solution Approach 1:
The furniture performs self-monitoring of its own state (fill level, cleanliness status, maintenance needs) through integrated sensors and indicators. Weight sensors detect when compartments need refilling, and the system automatically tracks operational status without requiring staff intervention, allowing the system to serve itself in monitoring functions.
Solution Approach 2:
The system continuously monitors compartment status through weight sensors and provides immediate feedback via LED indicators on the flap surfaces. Green indicators show compartments are ready, yellow indicates refilling needed, and red signals maintenance requirements. This real-time feedback eliminates the need for staff to manually check each compartment.
3Productivity
If multiple flaps are opened simultaneously, then productivity is improved by serving multiple customers, but device complexity increases due to coordination requirements
Solution Approach 1:
The control system is segmented into independent control units for each flap, with each flap having its own capacitive sensor and motorized drive. This segmentation allows each flap to be controlled independently while maintaining overall system coordination, enabling multiple flaps to open simultaneously without complex interdependencies.
Solution Approach 2:
The control system is designed with universal coordination logic that can handle multiple simultaneous operations. The same sensor and motor control mechanism works for each individual flap while the central control coordinates them universally, allowing the system to manage single or multiple flap openings using the same functional architecture.
4Reliability
If flaps are kept closed to maintain hygiene, then food preservation is improved, but ease of operation deteriorates due to restricted access
Solution Approach 1:
The manual flap opening mechanism is replaced with a motorized drive system controlled by capacitive sensors. Customers can access compartments by simply approaching or touching the sensor area, and the motor automatically opens the flap. This substitution maintains the closed state for food preservation while providing easy access through automation.
Solution Approach 2:
The capacitive sensor acts as an intermediary that detects customer intent to access food without requiring direct manipulation of the flap. The sensor triggers the motorized opening sequence, mediating between the customer's need for access and the requirement to keep compartments closed for preservation, thereby maintaining both hygiene and ease of access.
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 design enhances hygiene by minimizing direct contact, automates compartment management, and streamlines customer access while reducing staff effort for monitoring and maintenance, ensuring better food preservation and customer convenience.
Implementation Method 1
a capacitive sensor field (14), which is set up to be operated by a customer to be operated outside the furniture
Data Source
Figure 1
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AI summary
According to the invention, a piece of furniture for storing and offering food, in particular baked goods, in a sales room and for self-service by customers in the sales room, with at least one compartment for the food with a removal opening that is closed by a flap, characterized in that the Flap has a transparent surface made of transparent solid material and a motorized drive with an actuating switch, which is set up to be operated by a customer from outside the furniture, for opening and closing the flap.