Acoustic Alarm Sensor Using Unique Audio Signal Verification
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Solution Overview
Problem
Traditional security systems face limitations and high costs due to the need for extensive installation of sensors like IR, magnetic, and vibration sensors, which can trigger false alarms and require complex wiring, making them aesthetically unpleasing and costly to maintain.
Innovation Solution
An alarm system utilizing a single sensor module with a microphone and microprocessor that detects unique audio signals associated with unwanted events, such as door or window openings, eliminating the need for extensive wiring and allowing for centralized detection from a single point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sensors (IR, magnetic, vibration) are installed at all entry and exit points, then security coverage is improved, but installation cost and complexity increase significantly
Solution Approach 1:
The patent applies universality by using a single sensor module that can detect multiple types of unwanted events (door openings, window openings, intrusions) through acoustic signals. This multi-functional sensor replaces the need for multiple specialized sensors at different locations, reducing installation complexity while maintaining comprehensive security coverage.
Solution Approach 2:
The patent uses acoustic signals as an intermediary medium to transmit information about unwanted events from remote locations to the central sensor module. Instead of direct electrical connections between sensors and control panels, sound waves serve as the communication channel, eliminating the need for extensive wiring infrastructure.
2Measurement precision
If traditional sensors are connected to a central control panel, then detection capability is improved, but wiring requirements increase and aesthetic appearance deteriorates
Solution Approach 1:
The patent replaces the mechanical/electrical wiring system with an acoustic signal transmission system. Instead of using electrical cables to connect sensors to the control panel, the system uses sound waves to carry detection information, thereby eliminating the need for visible and complex wiring infrastructure while preserving detection capabilities.
3Measurement precision
If IR sensors are used for intrusion detection, then detection capability is improved, but false alarm rate increases due to temperature changes
Solution Approach 1:
The patent changes the detection parameter from thermal radiation (IR) to acoustic signals. By detecting sound waves generated during unwanted events rather than temperature changes, the system maintains intrusion detection capability while eliminating false alarms caused by environmental temperature variations.
4Reliability
If magnetic sensors are fitted to all doors and windows, then security coverage is improved, but installation cost and aesthetic appearance worsen
Solution Approach 1:
The patent applies universality by using a single sensor module that can detect multiple types of unwanted events (door openings, window openings, intrusions) through acoustic signals. This multi-functional sensor replaces the need for multiple specialized sensors at different locations, reducing installation cost while maintaining comprehensive security coverage.
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 solution provides efficient and cost-effective security by using audio signals to trigger alarms, reducing installation complexity and aesthetic issues, while allowing for customizable detection of specific sounds in various environments.
Implementation Method 1
a detection sensor for detecting sound in the environment
Data Source
AI summary
An alarm system for protecting an environment from an unwanted events, such as an intrusion, the alarm system including: a detection sensor for detecting sound in the environment, wherein the detection sensors are adaptable to identify a unique audio signal if an unwanted event is detected; a sensor module adapted to verify the unique audio signal from the detection sensor; and an alarm generation module adapted to generate an alarm if the unique audio signal is verified.