Adaptive Vibration Sensing Bandwidth for Multi-Range Noise Detection
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Solution Overview
Problem
Existing noise and vibration sensing technologies for active road noise control and engine noise control systems require specific sensor arrangements, leading to inefficiencies and increased costs due to the need for different sensor configurations for varying frequency ranges and dynamic ranges.
Innovation Solution
A scalable noise and vibration sensor with an acceleration sensor and a processing module that adjusts signal bandwidth and dynamic range in response to a control signal, allowing the same sensor to be used in multiple applications by increasing bandwidth when dynamic range decreases and vice versa, maintaining a constant bandwidth-dynamic product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If different sensor arrangements are used for road noise control and engine noise control systems, then measurement precision for specific frequency ranges is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal noise and vibration sensor system that can function for both road noise control and engine noise control applications. The sensor arrangement is designed to capture relevant signals for multiple purposes simultaneously, eliminating the need for separate dedicated sensor systems for each application.
Solution Approach 2:
The system employs dynamic signal processing where the bandwidth and dynamic range of the sensor are adjustable based on operational requirements. A control signal dynamically adjusts the sensor characteristics to optimize performance for different noise sources and frequency ranges, allowing the same physical sensor to adapt to different measurement needs.
2Adaptability or versatility
If sensor bandwidth is increased to capture wider frequency ranges, then adaptability to different noise sources is improved, but signal dynamic range decreases
Solution Approach 1:
The sensor system dynamically adjusts its bandwidth and dynamic range characteristics based on a control signal that reflects current operational requirements. When wide frequency coverage is needed, the system accepts reduced dynamic range, and when high dynamic range is needed, the system narrows the bandwidth. This dynamic adaptation allows the sensor to optimize its performance characteristics for different operating conditions.
Solution Approach 2:
The system changes the operational parameters of the sensor, specifically the bandwidth and dynamic range, based on the control signal. This parameter adjustment allows the sensor to maintain optimal performance across varying operational requirements, trading off between frequency range coverage and signal dynamic range as needed.
3Measurement precision
If multiple dedicated sensors are deployed for different noise control applications, then measurement precision for each application is improved, but loss of substance and cost increase
Solution Approach 1:
The patent implements a universal sensor arrangement that serves multiple noise control applications simultaneously. Instead of deploying separate dedicated sensors for road noise control, engine noise control, and other applications, a single adaptable sensor system is used that can be configured for different measurement needs through dynamic parameter adjustment.
Solution Approach 2:
The system merges multiple sensing functions into a single sensor arrangement. By combining the capabilities to detect road noise, engine noise, and other vibrations in one unified system with dynamic adjustability, the patent reduces the total quantity of sensors needed while maintaining measurement precision for each application.
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 efficient and accurate noise and vibration sensing across various systems, reducing the need for multiple sensors and improving operational efficiency while maintaining cost and space savings.
Implementation Method 1
an acceleration sensor configured to generate a sense signal representative of the acceleration that acts on the acceleration sensor
Data Source
AI summary
Noise and vibration sensing includes generating with an acceleration sensor a sense signal representative of the acceleration that acts on the acceleration sensor, and processing the sense signal to provide a processed sense signal having an adjustable signal bandwidth and an adjustable signal dynamic. The signal bandwidth extends between a lowest frequency and a highest frequency of the sense signal, and the signal dynamic is the ratio between a maximum amplitude of the sense signal and an output noise floor generated by the acceleration sensor. Noise and vibration sensing further includes adjusting the signal bandwidth and the signal dynamic in accordance with a control signal so that the signal bandwidth increases when the signal dynamic decreases and vice versa.