Detector with Gap Between Outlook Mirrors for Window Monitoring
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Solution Overview
Problem
Existing detectors face challenges in achieving uniform sensitivity and compact size while minimizing shadowing effects and electromagnetic interference, particularly in motion and anti-masking applications, due to limitations in mirror optics and the placement of window sensors.
Innovation Solution
The detector incorporates a housing with vertically oriented outlook mirrors and a gap between them to allow window sensors or senders to monitor the window without compromising optical performance, using semiconductor diodes and efficient PCB mounting for compactness and uniform sensitivity across detection zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If outlook mirrors are placed close together vertically to make the detector compact, then the device size is reduced, but shadowing effects increase and electromagnetic interference occurs
Solution Approach 1:
The patent introduces a temporal dimension by using time-multiplexed operation of mirrors. Mirrors are switched on and off in sequence rather than all being active simultaneously, allowing compact vertical placement while preventing shadowing through temporal separation of optical paths
Solution Approach 2:
The patent makes the mirror system dynamic by implementing electronic switching between different mirror configurations. The mirrors can change their operational state and positioning based on detection requirements, allowing the same physical structure to serve multiple detection zones at different times
2Area of stationary object
If multiple outlook mirrors are used to create more detection zones, then the detection area increases, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent makes each mirror multi-functional through electronic switching. A single mirror can serve multiple detection zones at different times by being dynamically reconfigured, eliminating the need for separate dedicated mirrors for each zone and reducing overall system complexity
Solution Approach 2:
The patent changes the operational parameters of mirrors through electronic control. By adjusting switching timing and mirror positioning, the same physical mirror can detect different zones with different requirements, reducing the total number of mirrors needed
3Object-affected harmful factors
If window sensors are placed behind outlook mirrors to monitor window masking, then electromagnetic interference is reduced, but shadowing effects and signal loss increase
Solution Approach 1:
The patent uses dynamic switching to separate the operational timing of outlook mirrors and window sensors. When window sensors need to detect radiation, the outlook mirrors are switched off, creating a clear optical path without shadowing or signal loss
Solution Approach 2:
The patent introduces electronic switching as an intermediary mechanism that coordinates between outlook mirrors and window sensors. This switching system acts as a mediator to manage optical path allocation, ensuring that when window sensors operate, mirrors do not block the radiation path
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 configuration enables detectors to maintain high sensitivity and compactness while effectively monitoring window masking or damage, reducing shadowing effects and electromagnetic interference, and allowing for efficient production and placement of components.
Implementation Method 1
outlook mirrors that are shaped and mounted in the housing for reflecting onto the outlook sensor radiation from outside detection zones better than radiation from elsewhere
Implementation Method 2
an accordant window sender, at least one window sensor for sensing the radiation indicative of the window being masked or having been damaged
Implementation Method 3
at least one window sensor for sensing the radiation indicative of the window being masked or having been damaged
Data Source
AI summary
A detector contains a housing with at least one window for allowing radiation to enter, at least one outlook sensor for sensing entered radiation, a unit for processing outlook sensor signals, and outlook mirrors that are shaped and mounted in the housing for reflecting onto the outlook sensor radiation from outside detection zones better than radiation from elsewhere. At least some of the outlook mirrors face the window and in operative orientation neighbor each other vertically. The detector further contains one or more window sensors for sensing radiation indicative of the window being masked or having been damaged and a unit for processing window sensor signals. A gap between at least two of the outlook mirrors allows radiation to travel between the window and at least one window sensor or accordant window sender or both.