Alarm Unit Self-Test Authorization via Mechanical Actuator and Magnetic Sensor
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Solution Overview
Problem
Unauthorized system tests on networked alarm units can cause nuisances and skew test results, as they are often accessible to unauthorized individuals, leading to incorrect assessments of alarm unit functionality.
Innovation Solution
An alarm unit with a mechanical actuator and magnetic sensor that differentiates between standalone and system-wide self-tests, requiring sequential commands to initiate and complete system tests, thereby preventing accidental or unauthorized execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If system tests are made easily accessible for testing alarm units, then ease of operation is improved, but unauthorized persons can initiate tests causing nuisances and skewing test results
Solution Approach 1:
The system requires a preliminary action sequence where the test button must be pressed and held for a predetermined time period before the system test actually initiates. This preliminary time delay prevents accidental or unauthorized initiation while allowing authorized users to deliberately hold the button long enough to start the test.
Solution Approach 2:
The system dynamically changes the activation threshold based on the duration of button pressure. Short presses are ignored or trigger different functions, while sustained presses exceeding the time threshold trigger the system test. This dynamic response adapts to user intent based on the temporal characteristics of the input.
2Ease of operation
If remote alarm units can cancel system tests independently, then ease of operation is improved, but test result accuracy deteriorates due to premature cancellation
Solution Approach 1:
The system requires that the alarm unit be placed in a specific state (such as arming mode) before it can cancel a system test. This preliminary condition ensures that only authorized users who have properly configured the system can terminate the test, preventing premature cancellation by unauthorized persons.
Solution Approach 2:
The system introduces an intermediary condition (system arming state) that must be satisfied before cancellation is permitted. This intermediary state acts as a gatekeeper, ensuring that only appropriately authenticated users can cancel the test while maintaining the ability to do so when needed.
3Ease of operation
If system tests are initiated without authorization checks, then ease of operation is improved, but harmful factors increase due to unauthorized test execution
Solution Approach 1:
The system requires a preliminary time-based authentication where the button must be held for a predetermined duration before test initiation. This preliminary action serves as an implicit authorization check, ensuring that only deliberate actions (rather than accidental touches) can trigger the system test.
Solution Approach 2:
The system implements a preliminary anti-action by requiring sustained button pressure that counteracts accidental activation. The time threshold creates a barrier that prevents harmful unauthorized tests while allowing legitimate users to overcome it through deliberate prolonged pressing.
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
Ensures that system tests are only executed by authorized personnel, reducing nuisances and ensuring accurate assessments of alarm unit functionality by requiring specific sequences of actions to initiate and complete tests.
Implementation Method 1
an alarm unit having an alarm controller, the alarm controller being operatively connected to a plurality of implements within the alarm unit having a mechanical actuator and a magnetic sensor
Data Source
AI summary
Disclosed is an alarm unit having an alarm controller, the alarm controller being operatively connected to a plurality of implements within the alarm unit having a mechanical actuator and a magnetic sensor and at least one of a visual source and an audible source, wherein the alarm unit: monitors for input to initiate one of a plurality of self-tests including: a first test, initiated by actuation of the mechanical actuator without actuation of the magnetic sensor, and a second test, initiated by actuation of the mechanical actuator with actuation of the magnetic sensor, and wherein the first test differs from the second test.