Optical Signal Maintenance Prediction in Electronic Component Mounting
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Solution Overview
Problem
In optical communication systems using optical fibers, the deterioration of electro-optical converters can lead to communication failures due to reduced light output, necessitating a predictive maintenance technique to prevent such failures.
Innovation Solution
A system comprising a fixed unit, a movable unit, an optical transmission path, a photoelectric converter, and a detection section that estimates the time when the optical signal output will drop below a threshold value based on the electrical signal's signal value, allowing for proactive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical communication is used for transmitting control information between control device and movable unit, then communication speed and reliability are improved, but the system is vulnerable to communication failure due to deterioration of electro-optical converters over time
Solution Approach 1:
The system performs preliminary monitoring of the optical signal output from the electro-optical converter and predicts the time when maintenance should be performed, before actual communication failure occurs. This allows proactive replacement of deteriorating components, preventing communication failures and ensuring continuous reliable operation.
2Reliability
If the output value of optical signal is monitored to predict maintenance timing, then communication failure is prevented, but additional detection and estimation components are required
Solution Approach 1:
The system implements feedback by continuously monitoring the optical signal output from the electro-optical converter, comparing it against threshold values, and using this information to predict maintenance timing. This feedback mechanism enables the system to adaptively determine when maintenance is needed based on actual component performance degradation.
Solution Approach 2:
A photoelectric converter is introduced as an intermediary component to convert the optical signal into an electrical signal that can be measured and analyzed. This intermediary enables indirect monitoring of the electro-optical converter's performance without requiring direct access to the optical output, simplifying the detection system.
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
Enables predictive maintenance by tracking the voltage changes over time, accurately estimating when the optical signal output will reach a threshold, thereby preventing communication failures and ensuring system reliability.
Implementation Method 1
a photoelectric converter configured to convert the optical signal outputted from the movable unit into an electrical signal
Data Source
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Figure 2
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AI summary
The object is to provide a technique for predicting a time for performing maintenance of optical communication in an electronic component mounting device in which optical communication is performed. A controller in a time prediction process reads the voltage of an electrical signal from a storage section, calculates the slope with respect to time of the read voltage, and based on the amount of decrease with time of the voltage outputted from an AD converter, the time at which the voltage becomes to be equal to or less than a threshold value is calculated. The time at which the output value of the optical signal outputted from the mounting head will become equal to or less than the threshold value is then estimated.