An interface for an automatic hygienic sheet paper dispenser
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Solution Overview
Problem
Existing automatic hygienic sheet material dispensers have complex and costly interfaces with sensors and indicators distributed across various locations, making operation arduous and prone to reliability issues, especially in humid environments, and increasing manufacturing complexity.
Innovation Solution
A simplified interface with a main printed circuit board housing user sensors, indicators, and a microcontroller behind a protective cover with graphical symbols or text, allowing for intuitive operation and reduced exposure to moisture, featuring capacitive or infrared sensors for non-contact detection and virtual button functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensor means, indicators and microcontroller are distributed in various locations on the dispenser, then the dispenser can be operated, but the operation becomes arduous and time consuming for service persons
Solution Approach 1:
The patent combines the sensor means, indicators, and microcontroller into a single integrated interface unit located at one position on the dispenser. This merging eliminates the need for service persons to search across multiple locations, directly resolving the contradiction by improving ease of operation while reducing time consumption.
2Ease of manufacture
If sensor means and indicators are distributed in various locations, then the dispenser functions, but the cost for signal communication means and manufacturing complexity increases
Solution Approach 1:
The patent integrates sensor means, indicators, and microcontroller into a single interface unit, reducing the number of separate components and their interconnections. This merging simplifies manufacturing by reducing assembly steps and signal communication infrastructure, directly addressing the contradiction between ease of manufacture and device complexity.
3Reliability
If knobs, levers and buttons are used for adjusting settings, then the interface can be operated, but reliability is limited and components are exposed to humid environment
Solution Approach 1:
The patent replaces mechanical adjustment components (knobs, levers, buttons) with a contactless interface system using sensor means that detect user input without physical contact. This substitution eliminates mechanical wear and protects components from humid environment exposure, directly resolving the contradiction between reliability and exposure to harmful factors.
4Ease of operation
If interface components are distributed across various locations, then the dispenser can be serviced, but the placement is difficult to remember and operation becomes arduous
Solution Approach 1:
The patent consolidates all interface components into a single localized unit, eliminating the need for users to remember multiple placement locations. This merging directly addresses the contradiction by improving intuitive operation while preventing loss of information about component placement.
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 configuration enhances operational reliability, reduces manufacturing costs, and simplifies assembly by concentrating control functions in a small area, providing improved performance and protection against moisture and dust.
Implementation Method 1
The user sensor is a capacitive sensor or an infrared sensor
Implementation Method 2
The user sensor is a capacitive sensor or an infrared sensor
Data Source
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AI summary
The disclosure concerns an interface (1) for communicating with and for controlling the operation of an automatic hygienic sheet material dispenser. The interface (1) comprising a user sensor (2) arranged to have a sensing zone and to detect the presence of a user within the sensing zone, at least one indicator (4, 5, 6, 13) for indicating the setting or status of an operational parameter of the dispenser, and a main microcontroller (48). The interface (1) further comprising at least one additional sensor (3, 12) for adjusting at least one dispenser operational parameter or for activating at least one dispenser function, and a protective cover (7) comprising at least one graphical symbol or text. The at least one additional sensor (3, 12), the at least one indicator (4, 5, 6, 13) and the main microcontroller (48) are located on a main printed circuit board (8). The main printed circuit board (8) is located behind the protective cover (7) and arranged relative the at least one graphical symbol or text such that the at least one graphical symbol or text overlaps with the at least one additional sensor (3, 12) or the at least one indicator (4, 5, 6, 13). The main microcontroller (48) being arranged to selectively operate the dispenser in any of at least a user setting and a maintenance setting.