Server Alarm Reporting After Security Controller Link Loss
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Solution Overview
Problem
Existing home security and automation systems lack a centralized controller that can efficiently manage security, monitoring, and automation functions, leading to inflexibility and vulnerability due to reliance on proprietary architectures and a single point of failure, which complicates communication loss and zone fault event notifications.
Innovation Solution
A server-based environment that detects cessation of network connection between a security, monitoring, and automation (SMA) controller and a remote server, automatically reporting alarm messages to end users and central stations after a preset delay window, ensuring timely notification and preventing false disarm signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single centralized controller is used to control security, monitoring and automation, then device complexity is reduced and flexibility is improved, but the system becomes vulnerable to single point of failure and communication loss
Solution Approach 1:
The server initiates a disarm delay timer upon receiving an alarm signal from the centralized controller. This preliminary action ensures that even if the controller fails or communication is lost, the system has already prepared a delay mechanism that will automatically clear the alarm after a predetermined period, preventing false alarms while maintaining centralized control architecture
Solution Approach 2:
The server acts as an intermediary between the centralized controller and the alarm notification system. It receives alarm signals, processes them through the disarm delay timer mechanism, and then sends notifications to user devices. This intermediary role adds a layer of reliability by decoupling the controller from the alarm notification process
2Reliability
If communication failure detection is implemented, then system reliability is improved, but false alarm notifications may occur due to loss of disarm signals
Solution Approach 1:
The server pre-configures a disarm delay timer with a predetermined time period when it receives an alarm signal. This preliminary timing mechanism is ready before communication failure can occur, ensuring that if the controller fails to send a disarm signal, the server will automatically clear the alarm after the delay period expires, thus preventing false alarms while maintaining reliable communication failure detection
Solution Approach 2:
The system implements a feedback mechanism where the server monitors whether the alarm state changes after the disarm delay period. If communication is restored and the controller sends a proper disarm signal before the delay expires, the alarm is cleared normally. If communication remains lost, the automatic disarm after delay prevents false alarm notifications, creating a self-correcting feedback loop
3Reliability
If automatic alarm reporting is implemented upon communication loss, then user safety is improved, but false alarm messages may be sent due to undetected zone fault events
Solution Approach 1:
The server establishes a predetermined disarm delay timer period in advance when receiving alarm signals. This pre-set timing mechanism ensures that automatic alarm reporting only occurs after verifying the alarm persisted through the delay period, preventing false alarm messages while improving user safety notification through reliable automatic reporting of genuine security events
Solution Approach 2:
The system dynamically adjusts alarm notification behavior based on communication status and timer expiration. The server waits for the predetermined delay period to expire before sending alarm notifications, and can dynamically clear alarms if communication is restored within the delay window. This dynamic response ensures user safety notifications are sent only for genuine, persistent alarms rather than transient or false events
Data Source
AI summary
A server-based environment for reporting a status of a security, monitoring and automation controller is provided. Detecting cessation of an always-on persistent network connection between the SMA controller and the server is also provided. Reporting the cessation of the network connection to an end user and defined others is further provided. A further aspect provides for automatically reporting an alarm event to a central station, the end user, and others, in the event the cessation of the network connection occurs while the SMA controller is armed and after a zone fault event, and not receiving a disarm notification prior to expiration of a preset entry delay.