Beam Divergence Control for Optical Communication Wear Reduction
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Solution Overview
Problem
Existing communication systems face challenges in maintaining communication between moving devices using free space optics, as the shorter communication distance and higher relative speed require more frequent adjustments to the beam divergence angle, leading to increased mechanical wear and reduced system lifespan.
Innovation Solution
A control device and method that dynamically derive and adjust the beam divergence angle based on the communication distance and relative speed between communication devices, reducing the number of control cycles and minimizing mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the execution cycle time of beam directing control is shortened to maintain communication at higher speeds and shorter distances, then communication reliability is improved, but mechanical wear increases and system lifespan decreases
Solution Approach 1:
The patent implements dynamic adjustment of the beam divergence angle based on real-time communication distance and relative speed conditions. The control system transitions from static fixed-cycle control to dynamic adaptive control, adjusting the divergence angle only when necessary to maintain communication, thereby reducing unnecessary mechanical actuations and extending system lifespan while maintaining communication reliability.
Solution Approach 2:
The patent changes the physical parameter of beam divergence angle dynamically based on communication conditions. By deriving optimal divergence angles from communication distance and relative speed, the system adjusts this parameter adaptively, reducing the frequency of control executions while maintaining effective communication, thus lowering mechanical wear on adjustment components.
2Reliability
If the beam divergence angle is increased to maintain communication at shorter distances and higher speeds, then communication reliability is improved, but the number of control executions increases causing increased mechanical wear
Solution Approach 1:
The patent replaces frequent mechanical adjustment with intelligent control logic that calculates optimal divergence angles based on communication parameters. By using derivation units that compute the necessary beam characteristics from distance and speed data, the system minimizes mechanical actuations while maintaining communication effectiveness, thereby reducing mechanical wear on the beam directing components.
3Reliability
If the control execution frequency is increased to maintain communication stability, then communication reliability is improved, but the complexity of control increases
Solution Approach 1:
The patent performs preliminary derivation of the optimal beam divergence angle and control timing based on predicted communication conditions. By calculating the necessary control parameters in advance using the derivation units, the system reduces the complexity of real-time control decisions and simplifies the control execution while maintaining communication stability.
Data Source
AI summary
A control device includes: a distance derivation part which derives a communication distance between a subject-communication device which communicates using a beam and another communication device which faces the subject communication device; a speed derivation part which derives a relative speed of the another communication device with respect to the subject communication device; an angle derivation part which derives a range of divergence angles of a beam in which it is possible to maintain communication between the subject communication device and the another communication device on the basis of at least the communication distance and the relative speed; and an angle control part which changes a divergence angle of the beam when it is determined that the divergence angle needs to be changed on the basis of the current divergence angle of the beam and the range.