Tamper Detection Mechanism with Selective Enablement
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Solution Overview
Problem
Existing tamper detection mechanisms require robust mounting configurations, such as screws, to function effectively, limiting their application to less robust mounting surfaces and offering non-selective always-on functionality, which may not be desired in all situations.
Innovation Solution
A tamper detection mechanism that enables tamper detection without requiring screws, allowing for adhesive foam tape or other less intrusive mounting methods, and provides a selective enable/disable functionality, enabling tamper detection when the device is removed or a portion is opened, using a tamper actuator that moves between engaged and released positions within a guide sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tamper detection mechanism uses a robust mounting configuration (such as screws), then the tamper detection functionality can be effectively enabled, but the structural impact on the mounting surface increases and the types of mounting surfaces are limited
Solution Approach 1:
The mounting mechanism is segmented into two independent parts: a robust internal mounting structure (screw mounting plate) and an external housing that can be mounted using various methods (adhesive foam tape, screws, etc.). This segmentation allows the tamper detection mechanism to maintain reliable screw mounting internally while enabling versatile external mounting options without compromising tamper detection effectiveness.
2Reliability
If the tamper detection functionality is always enabled, then security is maximized, but the device complexity increases and the functionality is not desired in all situations (such as during transport)
Solution Approach 1:
The tamper detection functionality is made dynamic through a selectable switch that allows users to enable or disable the feature based on operational context. The system transitions from a static always-on state to a flexible on-demand state, reducing unnecessary complexity during transport or installation while maintaining security when needed.
3Adaptability or versatility
If the housing is adhered to the mounting surface using adhesive foam tape, then the structural impact is reduced and mounting versatility is increased, but the force available to shear the tamper mechanism upon removal is insufficient
Solution Approach 1:
The mounting system is divided into an internal screw-mounted platform that provides structural integrity and force transmission, and an external housing that can be attached using adhesive foam tape. This segmentation allows the weak adhesive bond to be compensated by the strong internal mounting structure, enabling gentle external mounting while maintaining effective tamper detection force.
Data Source
AI summary
A device includes a housing, a tamper switch supported at the housing, and a tamper actuator receivable at the housing. The tamper actuator is movable between a tamper disabled position and a tamper enabled position. In the tamper disabled position, the tamper actuator is fixed in place at the housing. In the tamper enabled position, the tamper actuator is configured to move relative to the housing between a tamper switch engaged position and a tamper switch released position.