Security Sensor Light Transmissive Housing for Indicator Visibility
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Solution Overview
Problem
In large electronic stores, the miniaturization of consumer devices makes them difficult to detect when stolen, as the small LED indicators on security sensors are easily obscured, leading to potential undetected removals, and existing systems lack flexibility in color changes to indicate different states.
Innovation Solution
A security system with a sensor housing that has a light transmissive portion, allowing the illumination source to project light externally, providing a visual indication of the sensor's state, and enabling multiple color changes to represent different states, with a flexible design that includes interchangeable light transmission sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If small LED indicators are used on security sensors, then the sensor size can be reduced and the device becomes more compact, but the visibility of the indicator becomes poor and容易被遮挡
Solution Approach 1:
The patent transitions the light emission from a point source (small LED) to a surface source (light transmissive portion of housing). The housing wall itself becomes light transmissive, distributing light across a larger area and making the indicator visible from multiple angles and distances, thereby resolving the visibility issue while maintaining compact sensor dimensions.
Solution Approach 2:
The housing structure is designed with specific regions having different optical properties - certain portions are made light transmissive while others remain opaque. This local differentiation allows the indicator light to be prominently displayed through designated areas without compromising the overall compact design or requiring larger LED components.
2Ease of manufacture
If fixed color LEDs are used in sensors, then the manufacturing process is simplified, but the system lacks flexibility to indicate different states with different colors
Solution Approach 1:
The patent employs LEDs capable of changing emission parameters (color/wavelength) based on operational requirements. By using multi-color or programmable LEDs, the system can indicate different sensor states (normal, alarm, powered) with different colors, providing versatility while maintaining relatively simple manufacturing processes through integrated control circuitry.
3Reliability
If multiple sensors are deployed in large displays, then coverage is improved, but it becomes difficult to visually monitor the state of each sensor's LED indicator
Solution Approach 1:
By making the housing walls light transmissive, the indicator signal is amplified and distributed across a larger spatial area. This allows monitoring personnel to detect sensor states from greater distances and multiple angles, significantly improving the feasibility of visual monitoring even when numerous sensors are deployed across large display areas.
Solution Approach 2:
The use of color-coded light indicators provides intuitive visual differentiation between various sensor states. Monitoring personnel can quickly assess the status of multiple sensors by observing color patterns, reducing the cognitive load and time required to verify the state of numerous sensors across large displays.
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
The solution enhances visibility of the sensor's state, reducing the likelihood of missed indicators and providing a more noticeable security presence, while allowing for customizable light patterns to clearly indicate the system's status, thus improving monitoring effectiveness.
Implementation Method 1
The source of illumination is generally in the form of an LED
Implementation Method 2
The wall structure has a light transmissive portion through which light from the illumination source projects from within the cavity to be visible externally of the wall structure
Data Source
AI summary
A security system having a control and a sensor attachable to an article to be monitored. The sensor has a plurality of different states, among which are an armed state and a breached state. The sensor and control interact so that the control causes a detectable signal to be generated as an incident of the sensor being changed from the armed state into the breached state. The sensor has a housing with a wall structure bounding a cavity. The sensor further has a source of illumination that projects light. The wall structure has a light transmissive portion through which light from the illumination source projects from within the cavity to be visible externally of the wall structure.