Acoustic Communication Wave Collision Avoidance
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Solution Overview
Problem
In acoustic communication systems, the lack of response from the reception side to the transmission side prevents confirmation of signal receipt, leading to inefficiencies in data transmission and positioning accuracy, especially in systems with closely spaced communication apparatuses.
Innovation Solution
Implementing a method where the second acoustic communication apparatus continuously transmits a second acoustic wave in constant cycles with transmission and pause periods, allowing the first apparatus to determine optimal timing for subsequent first acoustic wave transmission and enabling collision avoidance between waves, thereby enhancing positioning accuracy and data transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one set of acoustic communication apparatuses is used to transmit and receive multiple types of data, then device complexity is reduced, but wave collision occurs between transmitted and received signals
Solution Approach 1:
The received signal is transmitted back in constant cycles with transmission periods and pause periods. This periodic action creates time windows where the transmitting apparatus can send new signals while the receiving apparatus is in pause periods, avoiding wave collision while using a single communication apparatus for both transmission and reception
Solution Approach 2:
The transmission timing of the next first acoustic wave is dynamically determined based on the round-trip time and the cycle timing of the second acoustic wave. This dynamic adjustment ensures that transmitted waves never collide with received waves while maintaining continuous communication operations
2Use of energy by moving object
If the reception side does not return a response, then energy consumption is reduced, but confirmation of signal receipt is lost
Solution Approach 1:
The receiving apparatus transmits the received signal back to the transmitting apparatus as a response. This feedback mechanism allows the transmitting apparatus to confirm whether the signal was successfully received and processed, while the response is sent in a controlled manner that does not waste energy through continuous transmission
3Device complexity
If positioning signals are transmitted in one way only, then device complexity is reduced, but positioning accuracy is insufficient
Solution Approach 1:
The receiving apparatus returns the positioning signal in the second acoustic wave transmitted during pause periods. This feedback loop enables the transmitting apparatus to receive positioning information back, allowing for more accurate position determination through the round-trip timing measurements
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 allows for reliable transmission and reception of multiple data types without wave collisions, improving positioning accuracy and enabling finer grasp of mobile body movements by increasing the number of positioning cycles.
Implementation Method 1
acoustic waves are propagated underwater
Implementation Method 2
the second acoustic communication apparatus transmits, upon receipt of the first acoustic wave, a second acoustic wave
Data Source
AI summary
An acoustic communication system includes a first acoustic communication apparatus and a second acoustic communication apparatus. The first acoustic communication apparatus transmits a first acoustic wave to the second acoustic communication apparatus. The second acoustic communication apparatus transmits, as a response, a second acoustic wave to the first acoustic communication apparatus continuously in constant cycles until a next first acoustic wave is received. Each cycle includes a transmission period and a pause period. The first acoustic communication apparatus, which has received the second acoustic wave, determines a transmission timing that allows the next first acoustic wave to be received by the second acoustic communication apparatus based on a time period required from transmission of the first acoustic wave till reception of the second acoustic wave and the length of the transmission period, and transmits the next first acoustic wave to the second acoustic communication apparatus at the determined transmission timing.