Tubular Waveguide Detection Device for Roller Shutter Obstacle and Intrusion
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Solution Overview
Problem
Existing detection devices for installations like roller shutters and swimming pools are prone to malfunction due to actuators contacting the casing during deployment or folding, and they can only detect a single type of event, such as break-ins or obstacles, limiting their versatility and effectiveness.
Innovation Solution
A detection device that operates on the principle of transmission and reception of an electromagnetic signal, with a surface barrier extending over the entire width and height of the opening, allowing for the detection of presence, absence, movement, or position of objects, and enabling distinct responses to different events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If actuators are secured to the apron and move together with it during deployment or folding, then detection of break-in attempts is enabled, but the actuators may contact the casing or backstages resulting in degradation or malfunction
Solution Approach 1:
The detection function is extracted from the moving apron and transferred to a fixed structure. The electromagnetic signal transmission means are mounted on the fixed casing while the reception means are on the movable apron, allowing detection without physical contact between actuators and casing during movement.
Solution Approach 2:
An electromagnetic field serves as an intermediary between the fixed transmission means and moving reception means. This field-based interaction enables detection functionality without requiring physical contact or direct mechanical connection between components, eliminating the harmful contact issue.
2Device complexity
If a single-type detection device is used (either for break-in or obstacle detection), then device complexity is reduced, but versatility and adaptability are limited
Solution Approach 1:
The electromagnetic detection system is designed to perform multiple detection functions using the same basic transmission and reception components. By adjusting signal parameters and processing different signal modifications, the system can detect obstacles, intrusions, and other events, providing multi-functionality without requiring separate specialized devices for each detection type.
Solution Approach 2:
The system detects different types of events by analyzing changes in electromagnetic signal parameters such as amplitude, phase, frequency, or polarization. Different events (obstacles, intrusions, etc.) cause different modifications to the signal characteristics, allowing a single device to identify and respond to multiple event types through parameter analysis.
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 provides a versatile detection system that can detect various events with appropriate responses, preventing malfunctions and enhancing the reliability and adaptability of installations by using tubular waveguides with strategically placed openings to distribute the electromagnetic field effectively.
Implementation Method 1
at least one means 2 for emitting an electromagnetic signal 3 and, on the other hand, at least one means 4 for receiving such a signal electromagnetic 3
Data Source
AI summary
The invention relates to a device (1) for detecting the presence of an object or of a living being between two end points. This device (1) comprises, on the one hand, a means (2) for emitting an electromagnetic signal comprising an emit antenna (20) associated with a first end point, and a means (21) for exciting this antenna (20) so as to make this antenna (20) emit such a signal and, on the other hand, a means (4) for receiving this electromagnetic signal comprising a receive antenna (40) associated with a second end point, together with means (41) for detecting such a signal. This detection device (1) is characterized in that the emit (20) and receive (40) antennas each adopt the form of a tubular waveguide (200; 400) having at least one wall provided with at least one opening. The invention further relates to an installation for protecting, for counting or for closing an opening equipped with such a detection device (1).