Coupled Photoelectric Sensors With Type-Based Delay Synchronization
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Solution Overview
Problem
In sensor systems with multiple units, the light projecting time of slave units is unnecessarily lengthened when mixed with units of different light projecting periods, leading to decreased response speed and measurement accuracy due to mutual interference.
Innovation Solution
Each sensor unit determines a unique delay time based on its type information, allowing for independent light projecting periods that differ from other units of the same type, preventing interference and enabling arbitrary operation time settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the synchronous signal is output when the slave unit projects light, then the operation is synchronized, but the light projecting period of lower stage slave units is unnecessarily lengthened when mixed with different types having different light projecting periods
Solution Approach 1:
The patent applies local quality by assigning different delay times to different types of slave units based on their specific light projecting periods. Each type of slave unit has a predetermined delay time stored in its memory that is optimized for its characteristics, allowing the system to maintain synchronization reliability while preventing unnecessary extension of the light projecting period for any specific type.
Solution Approach 2:
The patent changes the parameter of delay time based on the type of slave unit. By storing multiple predetermined delay times in memory and selecting the appropriate one based on unit type, the system optimizes the response speed for each specific sensor type while maintaining overall synchronization, thus resolving the contradiction between synchronization reliability and time loss.
2Adaptability or versatility
If the light projecting period is lengthened to accommodate different types, then all types can operate synchronously, but the response speed decreases and measurement accuracy degrades
Solution Approach 1:
The patent applies local quality by assigning different delay times to different types of slave units based on their specific light projecting periods. Each type of slave unit has a predetermined delay time stored in its memory that is optimized for its characteristics, allowing the system to maintain synchronization reliability while preventing unnecessary extension of the light projecting period for any specific type.
Solution Approach 2:
The patent changes the parameter of delay time based on the type of slave unit. By storing multiple predetermined delay times in memory and selecting the appropriate one based on unit type, the system optimizes the response speed for each specific sensor type while maintaining overall synchronization, thus resolving the contradiction between synchronization reliability and time loss.
Data Source
AI summary
In a sensor system including a plurality of photoelectric sensor units, a light projecting period arbitrarily determined in each type is provided and mutual interference is prevented between identical types. The sensor system includes the plurality of sensor units coupled by a connector unit while a signal can be transmitted. Each of the sensor units retains type information thereof, and sets a unique identification number by transmitting the signal to each other. Each sensor unit operates after a delay time determined according to the identification number thereof elapses with a synchronous signal as a starting point. The synchronous signal is transmitted with a predetermined period from the sensor unit having a specific identification number in the plurality of sensor units. The delay time of each sensor unit is determined such that an operating period is matched with a predetermined period determined in each piece of the type information.