Underwater Detection Device Interference Removal
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Solution Overview
Problem
Existing detection devices struggle to accurately distinguish interference waves from reflection waves, especially in high-resolution applications, leading to interference removal issues that can spoil echo signals from small target objects like single fish.
Innovation Solution
A detection device with a transceiving module, signal loading module, and interference processing module that divides the detection distance range into sections, calculates feature values, and compares current and previous reception data to determine interference waves, using data from nearby sections or transmission cycles to generate and display accurate reflection wave data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If interference removal function is applied to fish finder with high distance resolution, then interference waves can be removed, but echo signals from single fish and small target objects will be spoiled
Solution Approach 1:
The patent divides the reception data into multiple distance sections (first distance section, second distance section, etc.) and processes each section independently. This segmentation allows the system to apply different processing strategies to different depth ranges, preserving small target echoes in certain sections while removing interference in others.
Solution Approach 2:
The patent applies different interference removal strategies to different distance sections based on their specific characteristics. For sections with strong interference signals, aggressive removal is applied, while sections with weak signals or small target echoes use more conservative processing to preserve valid detections.
2Measurement precision
If single fish moves to different depth during transmission cycle, then distance resolution is improved, but relevance between reception data at same depth is lost
Solution Approach 1:
The patent introduces a new dimension of analysis by examining not only the depth dimension but also the temporal dimension (transmission cycle direction). The interference wave determination module considers reception data from multiple transmission cycles at the same depth section, creating a multi-dimensional approach that maintains temporal relevance while preserving high distance resolution.
3Object-affected harmful factors
If lower level data is selected at same depth, then interference is removed, but valid echo signals may be lost
Solution Approach 1:
The patent implements a feedback mechanism where the interference wave determination module continuously monitors and compares reception data across multiple transmission cycles. This feedback loop allows the system to learn which signals are interference patterns and which are valid echoes, adjusting the selection process to preserve valid signals while removing interference.
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 approach enhances the precision of interference wave determination, effectively removing interference while preserving echo signals from small target objects, even when they move between transmission cycles.
Implementation Method 1
a transceiver for periodically transmitting a detection pulse signal toward a space and receiving a reflection wave from a target object as a reception signal
Implementation Method 2
receiving a reflection wave from a target object
Data Source
AI summary
This disclosure provides a detection device, which includes a transceiving module for periodically transmitting a detection pulse signal toward a space and receiving a reflection wave from a target object as a reception signal, a signal loading module for generating a distance section row by dividing a given detection distance range into a plurality of distance sections, obtaining reception data by sequentially sampling the reception signal for every distance section, and storing the reception signal in a memory, and an interference processing module for sequentially performing interference removal processing for the reception data of each of the distance sections stored in the memory. The interference processing module includes an interference wave determination module for determining for every distance section whether the reception data of the distance section row including a target distance section is resulting from an interference wave, a signal generating module, if the reception data is determined to be resulting from the interference wave for generating data to be displayed based on one or more reception data other than the reception data in proximity to the reception data at least either in a distance direction or a transmission cycle direction, and if the reception data is determined to be resulting from the reflection wave, for using the reception data as the data to be displayed, and a display module for displaying the data to be displayed.