Moving Robot Voice Recognition with Dual-Microphone Noise Isolation
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Solution Overview
Problem
Existing moving robots face challenges in voice recognition due to noise interference from their own components, such as driving and suction motors, which can be misinterpreted as voice commands, and separate voice recognition modules are inconvenient to manage.
Innovation Solution
The moving robot incorporates two voice recognition devices positioned strategically to minimize noise interference, with one device recognizing voice commands and the other recognizing noise, allowing the controller to extract accurate voice data by comparing their inputs, and a microphone mount with bending prevention ribs to ensure proper sealing and reduce noise introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the microphone is mounted on the body of the robot cleaner, then the management is convenient and the structure is integrated, but the noise emitted from the robot cleaner (including the drive motor) may be recognized as a voice command
Solution Approach 1:
The patent divides the robot body into different spatial zones: a first space containing the drive motor (noise source) and a second space containing the microphone (voice recognition device). By segmenting the internal space and strategically positioning the microphone in a region远离 from the motor, the design achieves both integrated mounting (improving management convenience) and noise isolation (maintaining voice recognition accuracy).
2Reliability
If the microphone is not mounted on the body of the robot cleaner (separate module), then the voice recognition rate is improved, but the management becomes inconvenient
Solution Approach 1:
The patent combines the microphone and the voice processing unit into an integrated voice recognition device that is mounted on the robot body. This merging approach consolidates the previously separate modules, improving management convenience while maintaining high voice recognition rates through proper spatial positioning within the robot's internal structure.
3Device complexity
If a single voice recognition device is used, then the device complexity is reduced, but the ability to distinguish voice commands from noise is insufficient
Solution Approach 1:
The patent segments the voice recognition function into two distinct devices: a first voice recognition device positioned to capture noise (facing the drive motor) and a second voice recognition device positioned to capture voice commands. This segmentation enables the system to differentiate between noise and actual commands through comparative analysis, significantly improving identification accuracy while using only two simple devices.
Solution Approach 2:
The controller acts as an intermediary that receives signals from both voice recognition devices, compares their inputs, and determines whether the captured sound is noise or a valid voice command. This intermediary processing mechanism enables accurate voice command identification without requiring complex hardware, maintaining device simplicity while achieving high precision.
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
This configuration enhances voice recognition efficiency by effectively distinguishing voice commands from noise, maintaining high recognition performance while managing noise interference and ensuring robust device mounting.
Implementation Method 1
a first voice recognition device disposed in the first space and adapted to recognize a voice or noise, and a second voice recognition device disposed in the second space and adapted to recognize the voice or noise
Data Source
AI summary
A moving robot may include a main body which forms a space therein, an inner housing which surrounds the main body, an outer housing, two voice recognition members/devices (or voice sensors) which are disposed in the housings and are disposed to be separated from each other, and a microphone mount which is supported by the inner housing and causes the voice recognition device to be in close contact with the outer housing. The microphone mount may include a bending prevention rib which is disposed below the microphone mount to prevent bending of the microphone mount, and a twist prevention rib which is disposed below the microphone mount to prevent twisting of the microphone mount.