Alarm Control Box Automatic Re-Arming Timer
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Solution Overview
Problem
Conventional alarm systems for commercial premises often fail to automatically re-arm after temporary disarming, leaving access points unsecured and vulnerable to unauthorized access due to user forgetfulness.
Innovation Solution
A system that includes an alarm control box with a timer that automatically re-arms after a predetermined time period when the system is disarmed, ensuring continuous monitoring and security of access points without requiring manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual disarming of the alarm system is allowed for convenience, then ease of operation is improved, but reliability deteriorates because users may forget to re-arm the system
Solution Approach 1:
The system performs preliminary action by automatically re-arming the alarm system after a predetermined time period following disarming. This eliminates the need for users to manually remember to re-arm the system, thus maintaining reliability while allowing convenient temporary disarming for deliveries or appointments.
Solution Approach 2:
The alarm system serves itself by automatically re-arming without requiring user intervention. The microprocessor controls the timer and automatically restores security monitoring, making the system self-sufficient and eliminating reliance on user memory or action.
2Reliability
If automatic re-arming is implemented to improve reliability, then security monitoring reliability is improved, but device complexity increases due to timer and control circuitry
Solution Approach 1:
The microprocessor serves multiple functions: it controls the timer, manages the alarm disarming/re-arming sequence, monitors sensor inputs, and controls output devices. This multi-functionality reduces the need for separate dedicated circuits for each function, thereby limiting the increase in overall device complexity.
Solution Approach 2:
The timer function is integrated into the alarm control system rather than being a separate device. The microprocessor combines timing, control, and monitoring functions into a single unified system, reducing the number of discrete components and simplifying the overall device architecture.
Data Source
AI summary
A method of securing an access point comprises transitioning to a first alarm state in response to: receiving an indication that the access point is open, sounding a first audible alarm in response to the open access point, silencing the first audible alarm and returning to the armed state in response to a disarming action by a user, transitioning to a first disarmed state in response to receiving an indication of the disarming action by the user, initiating a countdown from a first predetermined time period in response to the disarming action by the user, returning to the armed state upon the expiration of the first predetermined time period, transitioning to a second disarmed state in response to receiving an indication of a closed access point, and initiating a countdown from a second predetermined time period in response to a remaining first predetermined time period being greater than the second predetermined time period.