Free-Space Optical Communication Mesh for Blind-Spot Movement Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for detecting invasions and movements of targets, such as intruders or pedestrians, often fail to accurately detect targets in blind spots or suffer from time lags, necessitating additional security measures like cameras or guards.
Innovation Solution
A free space optical communication system with a meshed network of optical communication apparatuses that detect target movements based on light reception states, allowing for real-time detection and tracking of targets using a meshed-form free space optical communication network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single active sensor emits light and detects reflected light to detect targets, then the detection function is simplified, but the detection coverage is limited and blind spots occur
Solution Approach 1:
The patent divides the detection system into multiple independent optical communication apparatuses distributed throughout the space. Each apparatus independently emits light and detects reflected light, creating multiple overlapping detection zones that eliminate blind spots while maintaining individual simplicity.
Solution Approach 2:
The patent transitions from a single-point detection approach to a distributed spatial network. By deploying multiple apparatuses at different locations, the system creates a three-dimensional detection mesh that provides comprehensive coverage without requiring complex single-point sensors.
2Area of stationary object
If a reflector rotates to expand detection area, then detection coverage increases, but the system complexity and potential blind spots increase
Solution Approach 1:
Instead of using a single rotating reflector, the patent segments the detection function across multiple stationary optical communication apparatuses. Each apparatus has its own light emitter and detector, eliminating the need for mechanical rotation while achieving comprehensive coverage through spatial distribution.
3Reliability
If security cameras are added to detect targets in blind spots, then detection reliability improves, but system complexity and cost increase
Solution Approach 1:
The optical communication apparatuses perform multiple functions: they transmit communication signals through free space and simultaneously detect target movements by measuring reflected light. This eliminates the need for separate security cameras, as the same distributed apparatuses provide both communication and comprehensive detection capabilities.
4Productivity
If security guards are deployed to respond to detections, then response capability improves, but time lag occurs and detection reliability decreases
Solution Approach 1:
The system provides immediate real-time feedback through the distributed optical communication network. When a target is detected, the change in reflected light is instantly communicated through the optical mesh, enabling immediate response without the time lags associated with manual monitoring by security guards.
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 accurate detection and tracking of targets, including intruders and pedestrians, without reliance on additional security measures, by utilizing a meshed network of optical communication apparatuses to monitor movement and adjust communication paths as needed.
Implementation Method 1
a first free space optical communication apparatus 100... transmits a laser beam toward a second free space optical communication apparatus 100
Implementation Method 2
the light receiving unit 120 receives light from outside... detects movement of a target
Data Source
AI summary
Provided is a technique that makes it possible to detect movement of a target. A free space optical communication system includes: a plurality of free space optical communication apparatuses constituting a meshed-form free space optical communication network; and at least one processor, the at least one processor executing a detection process of detecting movement of a target in an area of the meshed-form free space optical communication network on the basis of light reception states of the respective free space optical communication apparatuses.