Low Frequency Sound Sensor Array Positioning
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Solution Overview
Problem
Current systems for detecting and positioning low frequency sound sources, such as infrasound, face challenges in accurately determining direction and distance due to environmental interference and the need for precise sensor configurations.
Innovation Solution
A system comprising multiple sensors, including pressure sensors and microphones, configured to transform low frequency sounds into signals, and a processing device that calculates positioning information using time-difference-of-arrival and angle-of-arrival calculations, with atmospheric shields to filter ambient noise, allowing for directionalization and distance determination of low frequency sound sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used in an array to determine direction and distance of low frequency sound sources, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The system divides the sensing function into multiple independent sensors arranged in an array, where each sensor independently detects low frequency sound signals. This segmentation enables the system to perform time-difference-of-arrival and angle-of-arrival calculations across multiple sensor pairs, thereby improving positioning accuracy while maintaining manageable individual sensor complexity
Solution Approach 2:
The patent transitions from single-sensor detection to multi-sensor spatial array detection, adding dimensional complexity in the spatial arrangement of sensors. This dimensional expansion enables the system to exploit spatial relationships between sensors for calculating direction and distance, significantly improving positioning precision through geometric configurations
2Object-affected harmful factors
If atmospheric shields are added to filter ambient noise, then noise filtering capability is improved, but device complexity increases
Solution Approach 1:
Atmospheric shields are introduced as intermediary protective structures between the sensors and the external environment. These shields filter ambient noise and environmental interference before the signals reach the sensors, thereby improving the signal-to-noise ratio and positioning accuracy while adding a layer of environmental protection
Solution Approach 2:
The system uses multiple identical sensor assemblies, each with its own atmospheric shield, arranged in an array configuration. This replication of protected sensor units allows the system to maintain individual sensor protection while achieving collective positioning capability through the array geometry
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 system effectively determines the direction and distance of low frequency sound sources with improved accuracy and noise filtering, enabling precise geospatial positioning in various environmental conditions.
Implementation Method 1
a plurality of sensors configured to sense the one or more low frequency sounds and to transform the one or more low frequency sounds into one or more signals comprising a plurality of data values
Data Source
AI summary
A system and method of using the system are provided. The system can include at least one source, a plurality of sensors, and a processing device. The source can emit one or more low frequency sounds. The sensors can sense the low frequency sounds and transform the low frequency sounds into one or more signals including a plurality of data values. The processing device can be communicatively operable with the sensors to receive the signals and determine positioning information of the sensors based on the data values.