Submarine Cable Control Timing to Prevent Signal Interference
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Solution Overview
Problem
Existing monitoring systems for submarine cables face interference between monitoring signals and control signals when transmitted simultaneously, which can affect the functionality of both the monitoring apparatus and the control apparatus.
Innovation Solution
A control apparatus that includes instruction means to instruct a monitoring apparatus to perform submarine cable monitoring and control means to control a submarine device connected to the cable, where the monitoring apparatus sends a monitoring signal and performs monitoring processing, and the control means detects when the monitoring processing is not being executed to send a control signal and control the submarine device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the monitoring apparatus and control apparatus transmit signals simultaneously through the submarine cable, then both monitoring and control functions can operate in parallel, but signal interference occurs between monitoring signals and control signals
Solution Approach 1:
The patent implements periodic time-division multiplexing where monitoring signals and control signals are transmitted at different time intervals through the same submarine cable. The control apparatus transmits control signals during periods when the monitoring apparatus is not transmitting, creating a periodic alternating pattern that eliminates simultaneous signal interference while maintaining both functions.
Solution Approach 2:
The control apparatus detects the timing of monitoring signal transmission in advance and schedules control signal transmission to occur only during periods when no monitoring signal is being transmitted. This preliminary detection and scheduling prevents signal interference before it can occur.
2Object-affected harmful factors
If the control apparatus waits for monitoring processing to complete before transmitting control signals, then signal interference is avoided, but control response time increases
Solution Approach 1:
Instead of sequential waiting, the system employs periodic time-division multiplexing where control signals are transmitted during designated time windows that do not overlap with monitoring signal transmission. This allows the control apparatus to maintain readiness and transmit control signals as soon as the periodic window opens, minimizing wait time while avoiding interference.
Solution Approach 2:
The control apparatus continuously monitors the timing of monitoring signal transmission and uses this feedback information to dynamically schedule control signal transmission. This feedback mechanism allows the system to adapt to varying monitoring schedules and minimize control response delays while maintaining interference-free operation.
Data Source
AI summary
An object of the present disclosure is to provide a control apparatus by which interference between signals can be avoided. A control apparatus (10) according to the present disclosure includes: an instruction unit (11) that instructs a monitoring apparatus to perform processing for monitoring a submarine cable; and a control unit (12) that controls a submarine device connected to the submarine cable. The monitoring apparatus, in response to the instruction given by the instruction unit (11), sends a monitoring signal into the submarine cable and performs the monitoring processing, and the control unit (12) detects a timing at which the monitoring processing is not being executed, and then sends a control signal into the submarine cable and controls the submarine device.