Method and control unit for operating a cleaning device and cleaning device
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Solution Overview
Problem
Users of cleaning devices, such as dishwashers, face challenges in determining the load cleaning status, leading to potential unnecessary rinsing of already clean dishes and inefficiencies in loading and unloading processes, due to the lack of clear visibility into the cleanliness of the load.
Innovation Solution
A method and control unit that utilize an image capture device, such as a camera, to detect the load status by comparing images of the washing compartment with reference images and device parameters, providing a control signal for a user interface to display the loading status through color coding or text, ensuring users are informed about the cleanliness and readiness for loading or unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If users manually check load cleanliness without automated detection, then device complexity is reduced, but information accuracy about load cleaning status deteriorates
Solution Approach 1:
The patent replaces manual visual inspection with an automated image capture device and evaluation system. The control unit captures images of the load, compares them against reference images, and automatically determines cleaning status, substituting human judgment with machine-based optical detection and image processing algorithms.
Solution Approach 2:
The system enables the cleaning device to self-assess its own operational status by automatically monitoring the load cleaning status through image analysis. This self-service capability allows the device to provide accurate information about whether the load is clean or dirty without external intervention, improving information accuracy while maintaining operational autonomy.
2Measurement precision
If automated image capture and evaluation system is implemented, then information accuracy about load cleaning status is improved, but device complexity increases
Solution Approach 1:
The patent employs an image capture device connected to a control unit that automatically analyzes load cleanliness. The system captures images, compares them with reference images stored in memory, and evaluates cleaning status using programmed algorithms, replacing manual inspection with automated optical measurement and digital image processing.
Solution Approach 2:
The system provides feedback to users about the load cleaning status through the user interface. The control unit continuously monitors the load condition and communicates the evaluation results (clean or dirty status) to the user, enabling informed decisions about whether to continue cleaning or unload the load, thus creating a closed-loop information feedback system.
3Productivity
If real-time load status monitoring is implemented, then productivity by preventing unnecessary rinsing is improved, but energy consumption increases
Solution Approach 1:
The system uses feedback from image analysis to control the cleaning process. By continuously monitoring load status and providing real-time information about cleanliness, the system enables users to stop the cleaning cycle when the load is sufficiently clean, preventing unnecessary energy consumption from prolonged operation while maintaining high productivity through optimized cleaning duration.
Solution Approach 2:
The image capture device operates selectively rather than continuously, activating based on trigger events such as door opening/closing or at scheduled intervals during the cleaning cycle. This partial operation mode reduces energy consumption from constant monitoring while still providing sufficient data points to accurately determine load cleanliness status and optimize cleaning efficiency.
Data Source
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AI summary
The invention relates to a method for operating a cleaning device (100) comprising a washing chamber (104) for receiving load material (102), a washing chamber door (106) for closing the washing chamber (104), and an image acquisition device (108) for capturing the washing chamber (104), wherein the method includes a step of reading image data via an interface from the image acquisition device (108) in response to a door actuation signal representing the opening or closing of the washing chamber door (106), a step of evaluating the image data using reference image data and at least one device parameter representing a current operating status of the cleaning device (100) to obtain an evaluation result, and a step of providing a control signal, depending on the evaluation result, for output to a user interface (112).wherein the control signal represents signaling information for signaling a recommendation for action to a user regarding a loading status of the cleaning device (100).