Pressure-Channel Tamper Detection for Electronic Device Data Destruction
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Solution Overview
Problem
Existing data processing equipment lacks effective security mechanisms to prevent unauthorized access and data theft when the casing is tampered with or disassembled.
Innovation Solution
An electronic device with a pressure channel and deformable enclosure that maintains a negative pressure state during normal use, activating a security circuit to destroy stored information upon tampering or disassembly by changing to a non-negative pressure state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security devices are used to detect tampering, then the device can detect unauthorized access attempts, but the response time is delayed and data may be accessed before destruction
Solution Approach 1:
The pressure channel is pre-filled with air at atmospheric pressure, and the deformable enclosure is pre-positioned in a retracted state. When tampering occurs, the pressure equalization happens automatically and immediately, triggering the sensing element without requiring active detection or processing delay. This preliminary preparation of the pressure system enables instant response to casing separation.
2Reliability
If the security mechanism is highly sensitive to detect tampering, then unauthorized access can be detected immediately, but false activation may occur during normal operation
Solution Approach 1:
The pressure channel is positioned specifically within the casing structure, and the deformable enclosure is located to contact only the sensing element. This localized pressure sensing mechanism ensures that only significant casing separation (tampering) triggers activation, while normal operational movements that do not affect the pressure channel remain undetected, preventing false activations.
3Reliability
If a deformable enclosure is used to detect pressure changes, then the mechanism can respond to tampering, but the structural complexity increases
Solution Approach 1:
The deformable enclosure is implemented as a thin, flexible membrane that can elastically deform in response to pressure changes. This simple yet effective component replaces complex mechanical switches or electronic sensors, achieving reliable tamper detection through the natural physical response of the flexible material to pressure equalization when the casing is separated.
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
Provides high-sensitivity security protection by ensuring immediate data destruction upon unauthorized access attempts, enhancing data security.
Implementation Method 1
When the pressure channel is in a negative pressure state, the deformable enclosure exhibits a first deformation state, and the deformable enclosure does not contact the sensing element. When the pressure channel is not in the negative pressure state, the deformable enclosure exhibits a second deformation state, and the deformable enclosure contacts the sensing element.
Data Source
AI summary
An electronic device includes a body, a detachable element, a motherboard board and a deformable enclosure. The body includes a first surface and a second surface opposite to each other. The body is formed with a pressure channel. The pressure channel includes a first end and a second end. The pressure channel penetrates the first surface or the second surface. The detachable element covers the first end of the pressure channel. The motherboard is arranged on the body. A sensing element is arranged on the motherboard. The deformable enclosure closes the second end of the pressure channel. When the pressure channel is in a negative pressure state, the deformable enclosure exhibits a first deformation state and does not contact the sensing element. When the pressure channel is not in the negative pressure state, the deformable enclosure exhibits a second deformation state and contacts the sensing element.