Mounting Bracket Circuit Detection for Security Device Tampering
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Solution Overview
Problem
Existing security devices fail to detect certain types of tampering, such as the forcible removal of a device from its mounting support, which can render the security function ineffective.
Innovation Solution
A tamper detection mechanism using electrical cables and a controller to monitor the presence of an electrical circuit formed between a security device housing and its mounting bracket, generating a tamper signal when the circuit is disrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical push button is used to detect housing removal, then housing section separation can be detected, but forcible removal from mounting support cannot be detected
Solution Approach 1:
The system divides the mounting structure into separate components (mounting bracket, mounting surface, security device housing) and places electrical cables at different locations within these segments. This segmentation allows independent monitoring of housing section separation and forcible removal from mounting support, enabling detection of multiple tamper types simultaneously.
Solution Approach 2:
The patent transitions from a single mechanical push button mechanism to a multi-dimensional electrical circuit monitoring system. Electrical cables are positioned in different spatial locations and orientations within the mounting structure, creating multiple independent circuit paths that monitor different aspects of tampering, thereby expanding detection coverage across multiple dimensions.
2Reliability
If electrical cables are positioned within the mounting bracket, then forcible removal can be detected, but the device complexity increases
Solution Approach 1:
The patent combines the mounting bracket structure with the tamper detection functionality by integrating electrical cables directly into the mounting bracket. The mounting bracket serves dual purposes: mechanically securing the device and providing structural support for the electrical circuit monitoring system, thereby reducing overall system complexity.
Solution Approach 2:
The mounting bracket is designed to perform multiple functions simultaneously: mechanical mounting of the security device, structural support for electrical cables, and active participation in tamper detection through the electrical circuit. This multi-functionality eliminates the need for separate dedicated tamper detection components, simplifying the overall device structure.
Data Source
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AI summary
An assembly includes a premise security device, a mounting bracket, a first electrical cable, and a second electrical cable. The first electrical cable has a first electrical cable first end, connected to the premise security device controller, and a first electrical cable second end. The second electrical cable has a second electrical cable first end, electrically connected to the premise security device controller, and a second electrical cable second end. When the premise security device housing is coupled to the second mounting bracket portion, the second electrical cable second end is electrically connected to the first electrical cable second end to form an electrical circuit between the premise security device controller and the electrically connected electrical cable second ends. The premise security device controller is configured to monitor the presence of the electrical circuit and generate a tamper signal when the electrical circuit is no longer present.