Master-Slave Laser Synchronization via Network Protocol
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Solution Overview
Problem
The presence of multiple scanning lasers can cause interference issues, leading to erroneous signal detection due to simultaneous illumination of objects, which is a challenge in precision scanning applications, especially when a large volume or high accuracy is required, and existing solutions like configuration adjustments or synchronization signals increase system complexity and cost.
Innovation Solution
A system comprising a master scanning laser and slave scanning lasers connected via a communication network that supports a network protocol, where a synchronization message with additional data representing the motor position is sent to synchronize the lasers, minimizing interference without the need for dedicated cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple scanning lasers are used to cover large volume or achieve high accuracy, then measurement precision and coverage area are improved, but interference between lasers occurs causing erroneous signal detection
Solution Approach 1:
The patent implements periodic action by synchronizing the operation of multiple scanning lasers through clock synchronization. Each laser operates in coordinated time intervals, with master and slave lasers exchanging synchronization messages to ensure they do not illuminate the same object simultaneously. This periodic coordination eliminates interference while maintaining high detection accuracy across large volumes.
2Reliability
If synchronization signal is used to avoid interference between scanning lasers, then signal detection reliability is improved, but device complexity increases due to additional dedicated cables
Solution Approach 1:
The patent applies universality by making the communication network serve multiple functions simultaneously. The same communication infrastructure is used for both data exchange between lasers and for clock synchronization. This eliminates the need for separate dedicated synchronization cables, reducing system complexity while maintaining reliable interference-free operation.
Solution Approach 2:
The patent merges the synchronization function with the existing communication network. Instead of using separate dedicated cables for synchronization signals, the system combines timing synchronization and data communication into a single integrated communication infrastructure, thereby reducing the number of components and simplifying the overall system architecture.
3Reliability
If scanning lasers are mounted in determined configuration with specific angles or distances, then interference between lasers is reduced, but adaptability of system disposition is limited
Solution Approach 1:
The patent implements dynamics by transitioning from static geometric configuration to dynamic temporal synchronization. Instead of fixing laser positions at specific angles or distances to avoid interference, the system uses real-time clock synchronization that allows lasers to operate at arbitrary positions and orientations. The synchronization dynamically coordinates their operation based on their actual spatial relationships, providing both interference reduction and installation flexibility.
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 effectively synchronizes multiple scanning lasers, reducing interference and maintaining system flexibility while avoiding the complexity and cost of additional communication cables, ensuring accurate object detection and position measurement across a wide area.
Implementation Method 1
a first laser system adapted to emit a laser beam and a first optical system adapted to scan said laser beam within a field of view
Implementation Method 2
safety scanning lasers generally operate according to the principle of diffuse reflection and of the time of flight of light
Implementation Method 3
The reflected light is then detected by the scanning lasers and processed to determine the distance of the object from the scanner, using the 'time of flight' technique
Data Source
AI summary
A safety system, including a plurality of scanning lasers, with a master scanning laser and at least one slave scanning laser. The master scanning laser includes a first laser system adapted to emit a laser beam and a first optical system adapted to scan said laser beam within a field of view, the optical system driven by a first motor. The slave scanning laser includes a second laser system adapted to emit a laser beam and a second optical system adapted to scan said laser beam within a field of view, the optical system driven by a second motor. The master scanning laser and the slave scanning laser are connected to each other via a communication network adapted to support a network protocol wherein messages are sent according to said network protocol, including a synchronization message for clock synchronization of said master scanning laser and said slave scanning laser.