Spring-Based Anti-Intrusion Mechanism for Payment Terminal Housing
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Solution Overview
Problem
Existing anti-intrusion devices for electronic payment terminals are not robust and reliable, often triggering false alerts due to impacts or vibrations, and may not effectively detect unauthorized openings of the housing.
Innovation Solution
An anti-intrusion device utilizing a spring under pressure that acts electrically on an electronic circuit when the housing is closed and ceases to act when open, preventing false alerts and ensuring reliable detection of unauthorized openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring under pressure is used to act electrically on the electronic circuit, then reliability is improved and false alerts are avoided, but device complexity increases
Solution Approach 1:
A spring element is introduced as an intermediary mechanical component between the closed housing state and the electrical contact. The spring acts as a mediator that translates the mechanical state (closed/open) into an electrical signal through controlled contact, providing reliable detection while maintaining a simple overall structure.
Solution Approach 2:
The spring element automatically performs the detection function through its own elastic deformation and contact-making/breaking actions. The system is self-regulating, where the spring's natural tendency to return to its equilibrium position provides the detection mechanism without requiring external power or control systems.
2Measurement precision
If the anti-intrusion device acts continuously on the electronic circuit, then detection sensitivity is improved, but false alerts from impacts or vibrations increase
Solution Approach 1:
The detection mechanism transitions from a static continuous contact to a dynamic state-dependent contact. The spring element dynamically adjusts its contact state based on the housing condition: maintaining contact during normal closed state (including vibrations) and breaking contact only when the housing is opened, thereby distinguishing between transient disturbances and genuine intrusion attempts.
Solution Approach 2:
The system changes the contact parameter (electrical connection state) based on the mechanical state of the housing. The spring's contact force and electrical connection status are parameter changes that occur only when the housing transitions from closed to open, providing selective detection that ignores minor vibrations while detecting actual intrusions.
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
The solution provides a robust and reliable method to detect unauthorized openings, avoiding false alerts from impacts or vibrations, and ensuring lasting reliability by using a spring mechanism that only activates when the housing is closed.
Implementation Method 1
at least one spring, the spring being arranged in such a way as to be under pressure and act electrically on an electronic circuit when the housing is closed, and to no longer act on the electronic circuit when the housing is open
Data Source
AI summary
The present invention relates to an anti-intrusion device for the protection of housings. It applies in particular to the protection of a housing of an electronic payment terminal or of a housing for entering a confidential code (also known as a “PIN-pad”).The anti-intrusion device according to the invention makes it possible to detect any attempts to open a housing. It comprises at least one spring (3), the spring being arranged in such a way as to be under pressure and to act electrically on an electronic circuit (2) when the housing is closed, and to no longer act on the electronic circuit when the housing is open.