Night Security Alarm System with Automatic Deactivation Sequence
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Solution Overview
Problem
Existing night security alarm systems for recreational vehicles or caravans frequently issue false alarms due to the failure of users to deactivate the system when leaving, leading to unnecessary alerts.
Innovation Solution
A night security alarm system comprising three detectors (one for movement inside, one for door opening, and one for movement outside) and a control unit that automatically deactivates the system when it detects the sequence of movement inside, door opening, and subsequent movement outside, thereby preventing false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the night security alarm system remains activated when the user opens the door and goes outside, then the system provides continuous security monitoring, but false alarms are generated when the user forgets to deactivate it
Solution Approach 1:
The control unit performs preliminary action by automatically deactivating the alarm system based on the detected sequence of events (movement inside, door opening, movement outside). This preliminary automatic deactivation prevents the harmful effect of false alarms before they can occur, eliminating the need for manual user intervention while maintaining security monitoring reliability.
2Reliability
If the alarm system requires manual deactivation by the user, then the system maintains security awareness, but the complexity of operation increases and users may forget to deactivate it
Solution Approach 1:
The alarm system performs self-service by automatically detecting the user's departure through the sequence of detector signals and autonomously deactivating itself. This eliminates the burden of manual operation from the user while maintaining security awareness during the monitoring period, directly resolving the contradiction between reliability and ease of operation.
3Measurement precision
If the system uses multiple detectors to track user movement, then the accuracy of detecting user routines improves, but the device complexity increases
Solution Approach 1:
The system segments the detection function into three specialized detectors: one for movement inside the vehicle, one for door opening detection, and one for movement outside. Each detector focuses on a specific aspect of the user departure routine, improving measurement precision through functional segmentation while making the overall system more manageable despite the increased number of components.
Data Source
AI summary
A night security alarm system for a home, such as a recreational vehicle or a caravan, which night security alarm system includes: a first detector adapted to detect movement inside the home; a second detector adapted to detect opening of a door connecting the inside and the outside of the home; a third detector adapted to detect movement outside the home; and a control unit configured to automatically deactivate the night security alarm system if the first detector detects movement inside the home and then the second detector detects opening of the door and then the third detector detects movement outside the home.