Robotic Vacuum Cleaner Brushing Control to Reduce Cable Damage Risk
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Solution Overview
Problem
Robotic devices face challenges in navigating complex environments and avoiding obstacles, particularly in tasks that require precise control and adaptability, such as cleaning around cables or prioritizing cleaning areas based on debris levels.
Innovation Solution
A robotic vacuum cleaning apparatus with a sensor component for object detection, a propulsion system for trajectory control, and a controller that adjusts its motion and airflow to avoid obstructions, along with a method for prioritizing cleaning areas based on user input and debris analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robotic device continues brushing motion while approaching obstacles, then cleaning productivity is maintained, but the risk of damaging cables and obstacles increases
Solution Approach 1:
The robotic device dynamically adjusts its brushing motion based on real-time sensor feedback. When an obstacle is detected, the system temporarily deactivates the brushing component while maintaining forward motion and airflow, then Reactivates brushing after passing the obstacle. This dynamic control resolves the contradiction by adapting the brushing function to environmental conditions, preventing cable damage while maintaining cleaning productivity during obstacle-free periods.
2Reliability
If the robotic device stops completely to avoid obstacles, then safety is improved, but cleaning efficiency deteriorates
Solution Approach 1:
The robotic device segments the control of different components independently. The propulsion component continues moving forward while the brushing component is selectively deactivated when obstacles are detected. This segmentation allows the device to maintain forward progress and airflow for debris removal while temporarily suspending only the brushing function that could cause damage, thereby preserving safety without completely stopping the cleaning process.
Solution Approach 2:
The brushing motion operates periodically rather than continuously. The system alternates between active brushing during safe zones and inactive state when approaching obstacles, while maintaining continuous airflow and propulsion. This periodic activation of the brushing component resolves the contradiction by providing safety during obstacle proximity while maintaining overall cleaning efficiency through continuous airflow and selective brushing.
3Measurement precision
If the robotic device uses complex sensor arrays and processing, then navigation accuracy is improved, but device complexity increases
Solution Approach 1:
The robotic device uses its own operational state information (propulsion status, airflow status) combined with simple sensor inputs to determine brushing control decisions. Rather than requiring complex external sensor arrays and sophisticated processing algorithms, the system leverages its inherent operational data and simple obstacle detection to make navigation and cleaning decisions, achieving adequate navigation accuracy without excessive device complexity.
Data Source
AI summary
Apparatus and methods for training and operating of robotic appliances. Robotic appliance may be operable to clean user premises. The user may train the appliance to perform cleaning operations in constrained areas. The appliance may be configured to clean other area of the premises automatically. The appliance may perform premises exploration and/or determine map of the premises. The appliance may be provided priority information associated with areas of the premises. The appliance may perform cleaning operations in order of the priority. Robotic vacuum cleaner appliance may be configured for safe cable operation wherein the controller may determine one or more potential obstructions (e.g., a cable) along operating trajectory. Upon approaching the cable, the controller may temporarily disable brushing mechanism in order to prevent cable damage.