Movable electric device
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Solution Overview
Problem
Sweeping robots using non-contact sensors for detecting pet excrements face inaccuracies due to the sensors not directly contacting the excrements, leading to unreliable detection results.
Innovation Solution
A movable electric device equipped with a contact detection electrode that varies in resistance, capacitance, or impedance upon contact with diffusible dirt, allowing for accurate detection and potential cleaning by triggering a prompt apparatus or switching to a cleaning mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-contact sensors (infrared sensors and odor sensors) are used for detecting pet excrements, then the device can operate without direct contact with contaminants, but the detection accuracy deteriorates because the sensors do not directly contact the excrements
Solution Approach 1:
The patent introduces a contact detection electrode as an intermediary element that directly contacts the excrements to detect their presence. The electrode measures electrical parameters (resistance, capacitance, or impedance) when in contact with diffusible dirt, providing accurate detection data without requiring the entire robot body to contact contaminants. This intermediary approach resolves the contradiction by enabling direct contact measurement while isolating the main device body.
2Measurement precision
If contact detection electrode is used to improve detection accuracy, then the detection precision improves by directly contacting the dirt, but the device complexity increases due to additional electrode components
Solution Approach 1:
The patent utilizes changes in electrical parameters (resistance, capacitance, or impedance) of the contact detection electrode when it contacts diffusible dirt to achieve detection. By monitoring these parameter variations, the system can identify the presence of excrements with high precision. The electrode structures (ring-shaped, comb-teeth, curvilinear, or point/plate arrangements) are designed to maximize parameter changes upon contact, thereby improving detection precision while keeping the component design systematic and manageable.
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 device achieves improved detection accuracy by directly contacting the dirt, reducing external interference and enhancing the precision of identifying diffusible substances, thereby facilitating effective cleaning operations.
Implementation Method 1
When the contact detection electrode contacts diffusible dirt, a resistance, capacitance or impedance of the contact detection electrode varies
Implementation Method 2
When the contact detection electrode contacts diffusible dirt, a resistance, capacitance or impedance of the contact detection electrode varies
Implementation Method 3
When the contact detection electrode contacts diffusible dirt, a resistance, capacitance or impedance of the contact detection electrode varies
Data Source
AI summary
The present disclosure provides a movable electric device. The movable electric device includes a movable device body and a contact detection electrode. The movable device body has an electric drive means. The contact detection electrode is mounted on the movable device body. When the contact detection electrode _contacts diffusible dirt, a resistance, capacitance or impedance of the contact detection electrode varies.