Security Siren Control for Context-Aware Alarm Volume
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Solution Overview
Problem
Existing security sirens in home security systems operate at a fixed loud volume, causing disruption and discomfort to occupants, especially during false alarms, and lack flexibility in their operation based on the time, location, and system installation duration.
Innovation Solution
A security system controller that receives alarm signals from sensors and generates siren control signals based on conditions such as time of day, location, system installation duration, and sensor type to adjust the volume and type of siren output accordingly, allowing for customizable and context-aware siren operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security sirens operate at fixed loud volume to scare intruders, then security effectiveness is improved, but occupant comfort deteriorates due to disruptive noise during false alarms
Solution Approach 1:
The siren system dynamically adjusts its operation based on real-time conditions. The controller modifies siren activation and volume levels according to whether the alarm is genuine or false, transforming the static fixed-volume siren into a dynamic system that adapts to different alarm scenarios to maintain security effectiveness while reducing occupant disruption
Solution Approach 2:
The system changes operational parameters of the siren based on alarm type. For false alarms, the controller modifies parameters such as activation status and volume level, while for genuine alarms, full siren operation is maintained. This parameter adjustment resolves the contradiction by tailoring siren behavior to specific alarm conditions
2Reliability
If outdoor sirens are activated during false alarms to alert neighborhood, then community security awareness is improved, but neighborhood disruption worsens due to piercing sounds during false alarm situations
Solution Approach 1:
The system applies different quality characteristics to indoor and outdoor sirens based on alarm type. For false alarms, outdoor sirens are selectively deactivated or operated at reduced levels, while indoor sirens may still operate. This local differentiation allows the system to maintain community awareness for genuine threats while minimizing neighborhood disruption during false alarms
3Reliability
If siren operates at maximum volume regardless of installation duration, then security deterrence is improved, but user tolerance deteriorates during initial false alarm period
Solution Approach 1:
The controller is pre-programmed with installation date information and automatically adjusts siren operation based on the time elapsed since installation. During the initial period, the system preliminarily configures reduced siren activation or lower volume levels to accommodate user acclimation, while maintaining full deterrence capability after the adjustment period expires
Data Source
AI summary
Described is a method, apparatus and system for controlling one or more security sirens of a security system. A security system controller receives alarm signals from security sensors of the security system. In response, the security system controller determines one or more conditions related to the security system and then generates one or more siren control signals that are used to control audible alerts generated by one or more of the security sirens.