Multi-Transmitter Wave Detection With Code-Based Source Separation
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Solution Overview
Problem
Existing detection systems using multiple transmitters and receivers face challenges in identifying the transmission source of waves due to potential mixing, leading to difficulties in high-speed object detection.
Innovation Solution
A detection device employing a generator that generates modulated waves using unique code groups, a deriver that derives individual data from received signals, and a detector that identifies objects based on these data, allowing simultaneous use of multiple transmitters and receivers to distinguish wave sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple transmitters emit waves simultaneously, then detection speed is improved, but wave sources become difficult to identify due to mixing
Solution Approach 1:
The patent assigns different code sequences (C1, C2, C3) to different transmitters, changing the temporal parameter of wave emission. This allows simultaneous transmission while maintaining distinguishability through code-based identification, resolving the contradiction between speed and information loss.
Solution Approach 2:
The patent introduces a deriver as an intermediary component that processes received composite waves and separates them into individual transmitter contributions using the known code sequences. This mediator enables identification of transmission sources even when waves are mixed, resolving the information loss problem.
2Loss of information
If multiple transmitters emit waves at different timing, then transmission source identification is improved, but detection time period increases
Solution Approach 1:
The patent enables all transmitters to emit waves simultaneously and continuously rather than sequentially. The deriver continuously processes the composite received data to separate individual transmitter contributions, maintaining continuous useful action without time loss while preserving transmission source identification through code differentiation.
3Productivity
If multiple receivers are used simultaneously, then detection capability is improved, but received data becomes difficult to analyze due to composite waves
Solution Approach 1:
The patent segments the composite received data into individual transmitter contributions using the known code sequences. The deriver divides the mixed signal from multiple receivers into separate components corresponding to each transmitter, reducing analysis complexity while maintaining enhanced detection capability.
Data Source
AI summary
A detection device includes: a generator that generates a plurality of waves; a plurality of transmitters that emit the plurality of waves, the plurality of waves each being emitted by a corresponding one of the plurality of transmitters; a plurality of receivers each of which receives one or more of the plurality of waves as a composite wave; a deriver that derives individual data for each combination of one of the plurality of transmitters and one of the plurality of receivers by deriving, from received data of each of the plurality of receivers, the individual data corresponding to each of the plurality of transmitters; and a detector that detects an object that affects at least one of the plurality of waves, according to the individual data.