Oscilloscope Protection Adapter for Floating Measurement Safety
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Solution Overview
Problem
Oscilloscopes in a floating position can pose a hazard to operators due to potential electrical shock when disconnected from ground, as they become energized to the potential of the unit under test, and existing safety mechanisms are inadequate to prevent such hazards.
Innovation Solution
A system comprising a device with first and second circuits that measure currents between an instrument and equipment, detect anomalies, and disconnect the instrument from the equipment to prevent excessive current flow, using a combination of solid state and electromechanical switches for rapid and reliable disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the oscilloscope is disconnected from ground to enable floating measurements, then measurement versatility is improved, but operator safety deteriorates due to electrical shock hazard
Solution Approach 1:
The patent introduces a protection adapter as an intermediary device between the oscilloscope and the circuit under test. This adapter includes a current anomaly detection circuit that monitors current flow and automatically disconnects the oscilloscope when abnormal current is detected, thereby mediating between the need for floating measurements and operator safety
Solution Approach 2:
The protection adapter performs preliminary safety checks by continuously monitoring current flow before hazardous conditions can develop. The system proactively detects potential current anomalies and preemptively disconnects the oscilloscope, preventing electrical shock hazards before they can affect the operator
2Object-affected harmful factors
If protection mechanisms are added to ensure safety during floating measurements, then operator safety is improved, but device complexity increases
Solution Approach 1:
The patent extracts the safety protection functionality into a separate, standalone protection adapter that can be independently removed. This allows the complex safety mechanisms to be isolated from the main oscilloscope system, enabling safety improvements without permanently increasing the complexity of the core measurement instrument
Solution Approach 2:
The protection adapter is designed as a relatively simple, potentially disposable safety device that can be easily replaced. This approach accepts some device complexity but manages it through using simpler, replaceable components rather than complex permanent integrated systems
3Reliability
If current anomaly detection and automatic disconnection systems are implemented, then reliability is improved, but ease of operation deteriorates due to additional monitoring requirements
Solution Approach 1:
The protection adapter implements self-service safety monitoring by automatically detecting current anomalies and triggering disconnection without requiring operator intervention. The system monitors itself and autonomously responds to hazardous conditions, maintaining high reliability while minimizing the operational burden on the user
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 system effectively limits current flow to safe levels, reducing exposure to electrical shock hazards and ensuring the oscilloscope remains disconnected until safe, thereby enhancing operator safety.
Implementation Method 1
The first circuit can be configured to measure first current flowing between an instrument to an equipment. The second circuit can be configured to measure second current flowing between the equipment to the instrument.
Implementation Method 2
using a combination of solid state and electromechanical switches for rapid and reliable disconnection
Data Source
AI summary
Systems and methods for monitoring current anomaly are described. In an example, a device can measure first current flowing along a first liner between an instrument to an equipment. The device can measure second current flowing along a second line between the equipment to the instrument. The device can compare the measurements of the first current and the second current. The device can identify a presence of current anomaly based on the comparison of the measurements of the first and second currents. The device can, in response to the presence of the current anomaly, disconnect the instrument from the equipment.