Magnetic Window Cleaning Units With Collision-Offset Control
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Solution Overview
Problem
Window cleaning on the outer surface of tall buildings is hazardous and inefficient due to the difficulty in accessing and maintaining these surfaces, as existing technologies lack effective safety and control mechanisms.
Innovation Solution
A window cleaning apparatus with magnetic attachment and control systems, including direction detecting sensors, collision sensing, and offset adjustment, allows for safe and efficient movement of cleaning units on both inner and outer surfaces, ensuring accurate path control and collision prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If window cleaning is performed on the outer surface of tall buildings, then cleaning coverage is improved, but safety deteriorates due to great risks
Solution Approach 1:
The window cleaning apparatus is divided into two separate cleaning units: a first cleaning unit that operates on the inner surface of the window and a second cleaning unit that operates on the outer surface. This segmentation allows each unit to be controlled independently from inside the building, eliminating the need for workers to access the dangerous outer surface of tall buildings while still achieving comprehensive cleaning coverage of both surfaces.
2Measurement precision
If direction detecting sensor is used to control movement, then movement precision is improved, but reliability deteriorates when collision occurs due to sensor offset
Solution Approach 1:
The apparatus incorporates a collision sensing part that detects when the cleaning unit collides with the window frame, and an offset setting part that automatically adjusts the direction detecting sensor's offset based on this collision feedback. This feedback mechanism ensures that even after collision, the sensor maintains accurate directional detection, preserving both movement precision and operation reliability.
Solution Approach 2:
The offset setting part pre-establishes the relationship between the direction detecting sensor and the window frame by detecting collision points. This preliminary calibration allows the sensor to automatically compensate for any offset without requiring manual intervention during operation, ensuring continuous precise control.
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 apparatus enhances safety and efficiency by enabling controlled movement and collision-free operation, improving cleaning performance and user safety, particularly for high-rise buildings.
Implementation Method 1
first and second cleaning units which are respectively attached on both surfaces of a window using a magnetic force to move together with each other
Data Source
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AI summary
Provided are a window cleaning apparatus including first and second cleaning units which are respectively attached on both surfaces of a window using a magnetic force to move together with each other, and a method for controlling a movement of the window cleaning apparatus. The window cleaning apparatus includes a direction detecting sensor, a control part, a collision sensing part, and an offset setting part. The direction detecting sensor is provided to at least one of the first and second cleaning units to detect a moving direction of the window cleaning apparatus. The control part controls a movement of the window cleaning apparatus, based on the moving direction detected by the direction detecting sensor. The collision sensing part senses a shock to the window cleaning apparatus. The offset setting part sets a direction offset of the direction detecting sensor when the window cleaning apparatus collides with a frame of the window.