Anti-Short-Circuit Detection for User Terminals
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Solution Overview
Problem
User terminals, such as computers and mobile devices, are prone to short-circuit faults due to exposure of peripheral interfaces, which can lead to damage from conductive liquids, and existing waterproofing solutions increase costs and affect product appearance.
Innovation Solution
An anti-short-circuit detection apparatus is introduced, comprising a probe, detection resistor, switching circuit, and detection circuit, which automatically detects short-circuit faults between power and ground ports, issuing warnings or turning off the power circuit to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-proof mechanical parts are equipped to seal peripheral interfaces, then waterproof effect is improved, but design and production costs increase and product appearance is degraded
Solution Approach 1:
The patent replaces mechanical waterproof sealing structures with an electrical detection system. Instead of using water-proof mechanical parts to physically seal the peripheral interface, the invention uses a detection circuit with a probe, detection resistor, and control unit to electrically detect the presence of conductive liquid and respond by controlling the power circuit, thereby substituting a mechanical sealing approach with an electrical detection and control approach.
2Ease of operation
If peripheral interfaces are exposed for daily use, then ease of operation is improved, but susceptibility to short-circuit faults increases
Solution Approach 1:
The detection circuit performs preliminary detection of conductive liquid presence at the peripheral interface before short-circuit damage can occur. The probe continuously or periodically detects whether conductive liquid is present, and the control unit is prepared to immediately control the power circuit in response to detection results, enabling preventive action before actual short-circuit damage happens.
Solution Approach 2:
The invention implements a feedback mechanism where the detection circuit continuously monitors the peripheral interface for conductive liquid, and the control unit receives this detection information and responds by controlling the power circuit accordingly. This closed-loop feedback system allows the device to adapt its power supply state based on real-time detection results, maintaining ease of interface usage while preventing short-circuit damage.
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
Effectively prevents damage from short-circuit faults by automatically detecting and responding to conductive liquid exposure, enhancing user terminal safety without increasing design or production costs.
Implementation Method 1
the detection circuit is electrically connected to two terminals of the detection resistor and the processor, and is configured to detect a short-circuit current on the detection resistor
Data Source
AI summary
An anti-short-circuit detection apparatus includes a probe, a detection resistor, a switching circuit, and a detection circuit. The probe is disposed between a power port and a ground port. A first terminal of the detection resistor is electrically coupled to a power circuit of the user terminal, and a second terminal of the detection resistor is electrically coupled to the probe. The switching circuit is electrically coupled to the first terminal of the detection resistor and a processor of the user terminal and is configured to perform switching to be grounded or ungrounded under the control of the processor. The detection circuit is electrically coupled to two terminals of the detection resistor and the processor, and is configured to trigger the processor to control the user terminal to issue a short-circuit warning or turn off the power circuit when the short-circuit current is not zero.