Robotic Pool Cleaner Static Pressure Sensing for Depth Positioning
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Solution Overview
Problem
Robotic pool cleaners lack the ability to accurately determine their depth and position in water, leading to failures in realizing intelligent functions.
Innovation Solution
Incorporation of a water pressure sensing mechanism in a non-negative pressure area of the robotic pool cleaner to detect static pressure underwater, ensuring accurate depth and position identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the robotic pool cleaner uses common cleaning mechanisms without pressure sensing, then the device complexity is low, but the measurement precision of depth and position is insufficient
Solution Approach 1:
The patent introduces a water pressure sensing mechanism as an intermediary component to indirectly measure depth and position. The pressure sensor detects water pressure at different depths, and the control mechanism converts this pressure information into position and depth data, enabling accurate measurement without direct positioning hardware.
Solution Approach 2:
The patent replaces mechanical positioning systems with a pressure-based sensing system. Instead of using complex mechanical sensors or markers to determine position, the system uses water pressure measurements to infer depth and position information, simplifying the overall device structure while improving measurement precision.
2Productivity
If the robotic pool cleaner operates without accurate depth information, then the device complexity is low, but the productivity of intelligent cleaning functions is reduced
Solution Approach 1:
The patent implements a feedback mechanism where the pressure sensor continuously monitors water pressure, and the control mechanism uses this information to determine the cleaner's position and depth. This feedback loop enables the system to adapt its cleaning operations based on real-time position data, improving the productivity of intelligent functions.
Solution Approach 2:
The pressure sensing mechanism serves multiple functions: it measures depth, determines position, and provides information for intelligent cleaning operations. This multi-functional approach increases productivity without proportionally increasing device complexity, as a single sensing mechanism supports multiple operational needs.
3Measurement precision
If the sensing part is placed in the cleaning channel, then the structure is simplified, but the measurement precision is compromised due to water flow interference
Solution Approach 1:
The patent segments the shell into different functional areas: a cleaning channel for waste removal and a separate accommodating cavity for the pressure sensor. This segmentation allows the sensing part to be isolated from the water flow in the cleaning channel, ensuring accurate static pressure detection while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent extracts the pressure sensing function from the cleaning channel and places it in a separate accommodating cavity. This extraction removes the interference of water flow from the sensing process, improving measurement precision while adding only minimal structural complexity through the separate cavity and water through hole arrangement.
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
Enables the robotic pool cleaner to accurately determine its position and depth, facilitating intelligent operations and energy savings by optimizing movement control.
Implementation Method 1
a water pressure sensing mechanism disposed in a non-negative pressure area and configured to directly detect a static pressure underwater
Data Source
AI summary
A robotic pool cleaner is provided. The robotic pool cleaner includes a cleaning channel, where when the robotic pool cleaner works, garbage and sewage are drawn in through an inlet of the cleaning channel and discharged through an outlet of the cleaning channel; a shell, where the cleaning channel is disposed in the shell; a water pressure sensing mechanism, including a sensing part which is configured to sense a water pressure at a position where the sensing part is disposed, where the sensing part is disposed at an area outside the cleaning channel; and an accommodating cavity configured to accommodate the sensing part. The shell is provided with a first water through hole configured to allow water in a pool to enter the accommodating cavity and then fill the accommodating cavity when the robotic pool cleaner dives into water.