Cleaning Robot Navigation via Wireless Signal State Monitoring
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Solution Overview
Problem
Conventional cleaning devices require manual operation, making them inconvenient and time-consuming for floor cleaning, while existing cleaning robots struggle to accurately navigate and avoid specific regions due to interference from external wireless signals.
Innovation Solution
A cleaning robot equipped with a first sensing unit, signal generating unit, control unit, and wheels that adjust movement signals based on the state of a transmittal line and external environment, allowing it to autonomously navigate and avoid regions covered by external wireless signals by generating and processing sensing signals to match pre-determined states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the cleaning robot autonomously navigates using external wireless signals, then automation is improved, but navigation accuracy deteriorates due to signal interference
Solution Approach 1:
The patent introduces a signal generating unit as an intermediary that emits reference wireless signals to create a stable reference frame. The first sensing unit compares external wireless signals against this reference, filtering out interference and extracting accurate position information. This intermediary reference signal system enables autonomous navigation while maintaining precision despite external signal interference.
2Area of stationary object
If the robot enters regions with weak or overlapping wireless signals, then coverage area is improved, but navigation reliability deteriorates
Solution Approach 1:
The patent implements feedback control where the first sensing unit continuously monitors the strength and quality of external wireless signals. When signal quality falls below a threshold (indicating weak or overlapping signals), the control unit receives feedback and adjusts the movement signal to guide the robot away from problematic regions. This feedback mechanism ensures the robot maintains navigation reliability while still achieving comprehensive cleaning coverage in suitable areas.
Data Source
AI summary
A cleaning robot is disclosed. A first sensing unit generates a sensing signal to a transmittal line according to an external wireless signal. When the external wireless signal is sensed by the first sensing unit, a state of the transmittal line does not match with a pre-determined state. When the external wireless signal is not sensed by the first sensing unit, the state of the transmittal line matches with the pre-determined state. A control unit generates a movement signal when the state of the transmittal line matches with the pre-determined state. A plurality of wheels rotate according to the movement signal. A second sensing unit generates a second sensing signal according to the external environment of the cleaning robot. When the state of the transmittal line does not match with the pre-determined state, the control unit adjusts the movement signal according to the second sensing signal.