Speaker Calibration Control Using IMU Feedback
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Solution Overview
Problem
Smart speakers face inaccuracies in voice recognition due to unstable user positions and external force interference during rotation calibration, leading to errors in rotation control accuracy.
Innovation Solution
A calibration control method that detects real-time IMU data to determine external force interference, aborts rotation calibration if interference exceeds a threshold, and restarts from a calibration starting point to ensure accurate recalibration, preventing deviations in rotation angle monitoring accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the speaker performs rotation calibration operation to improve rotation control accuracy, then the voice recognition accuracy is improved, but the calibration process becomes vulnerable to external force interference causing errors
Solution Approach 1:
The system continuously monitors IMU data during the calibration process and provides real-time feedback to detect external force interference. When interference is detected, the system automatically adjusts the calibration process by aborting or restarting from a starting point, thereby maintaining calibration reliability while preserving the improved rotation control accuracy.
2Productivity
If the speaker continues rotation calibration operation during external force interference, then the calibration process completes faster, but the calibration accuracy deteriorates due to errors
Solution Approach 1:
The system uses real-time IMU data feedback to detect external force interference during calibration. When interference is detected, the system automatically aborts or restarts the calibration process, sacrificing some calibration speed to maintain accuracy. This feedback mechanism ensures that calibration operations only proceed when external forces are not interfering, thereby preserving calibration accuracy.
3Measurement precision
If the speaker restarts from calibration starting point after external force interference, then the calibration accuracy is restored, but the calibration time increases
Solution Approach 1:
The system continuously monitors calibration conditions through IMU data feedback. When external force interference is detected, the system automatically determines the appropriate restart point and resumes calibration. This feedback-based approach minimizes the time loss by restarting only when necessary and only from the appropriate starting point, thereby balancing calibration accuracy restoration with time efficiency.
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
Maintains good calibration accuracy for the IMU module by aborting and restarting the rotation calibration operation when external force interference is detected, ensuring precise rotation control and preventing errors in voice recognition and user interaction.
Implementation Method 1
obtaining real-time inertial measurement unit (IMU) data of the speaker during a rotation calibration process, and determining whether the speaker is subject to an external force interference according to the real-time IMU data
Data Source
AI summary
Disclosed are a calibration control method for a speaker, an apparatus, a device and a readable storage medium. The calibration control method for the speaker includes: obtaining real-time inertial measurement unit (IMU) data of the speaker during a rotation calibration process, and determining whether the speaker is subject to an external force interference according to the real-time IMU data; in response to determining that the speaker is subject to the external force interference, controlling the speaker to abort a rotation calibration operation, and detecting whether an intensity value corresponding to the external force interference is greater than a preset intensity threshold; and in response to the intensity value being greater than the preset intensity threshold, controlling the speaker to restart from a calibration starting point of the speaker to perform the rotation calibration operation on an IMU module in the speaker.