Lighted Electrical Cable Status Indication for Safe Isolation Checks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems fail to provide reliable visual indication of the status and position of electrical cables, particularly in high-voltage environments, posing safety hazards due to the inability to detect damaged or improperly connected cables.
Innovation Solution
An apparatus comprising a light-emitting indicator along the cable length, powered by a battery, which measures resistance and voltage between conductors, providing visual feedback on cable status and position through color, intensity, and flashing patterns, with switches to isolate conductors for safe resistance measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-emitting indicator is provided along the cable length to indicate cable position and status, then visibility and safety indication are improved, but power consumption and device complexity increase
Solution Approach 1:
The light-emitting indicator operates in periodic flashing modes rather than continuous operation. The controller activates LEDs in sequences along the cable length, creating a traveling light effect that indicates cable position and status while consuming significantly less power than continuous illumination would require.
Solution Approach 2:
The system uses the cable's own electrical conductors to power the indicator system. The power unit connects to the cable conductors, and the cable itself serves as the power transmission medium, eliminating the need for separate power cables or external power sources.
2Measurement precision
If resistance measuring means is electrically connected to each conductor to detect cable damage, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The measuring device performs multiple functions using the same hardware components. The resistance measuring means detects both insulation resistance (to identify cable damage) and conductor continuity. The same LEDs serve both as visual indicators and as measurement elements in the electrical circuit.
Solution Approach 2:
The control unit and measuring device are integrated into a single compact unit that connects to the cable. The controller, measuring circuitry, power management, and visual indicators are combined in one device rather than distributed across multiple separate components.
3Reliability
If switches are provided to isolate conductors for safe resistance measurements, then safety is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The isolating switches are activated automatically by the controller before resistance measurements begin. The system performs preliminary safety isolation of conductors, ensuring that measurements are only taken when conductors are properly isolated from external power sources, preventing dangerous measurement conditions.
Solution Approach 2:
The isolating switches act as intermediary components between the external environment and the measurement circuitry. These switches provide controlled access to conductors, allowing safe measurement while maintaining isolation from potentially hazardous external electrical sources.
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
Enables safe handling and connection of electrical cables by indicating potential hazards such as shorts or high voltage, reducing the risk of electrical shocks and damage by providing continuous, reliable visual feedback without external power.
Implementation Method 1
a light-emitting indicator provided along at least 50% of the length of the electrical cable, such as along at least 70%, or more preferably at least 90%, of the length of the electrical cable. The light-emitting indicator comprises a plurality of light emitters distributed along the length of the light-emitting indicator.
Implementation Method 2
a measuring device comprising resistance measuring means adapted to measure at least a resistance between at least one pair of the plurality of conductors of the electrical cable
Data Source
Figure 1~5
Figure 6~8
AI summary
An apparatus (1) comprising an electrical cable (2) provided with light emitters (7) along its length for visual communication of its position/extent and of statuses of the apparatus (1), said statuses comprising at least statuses related an insulation resistance between conductors of the electrical cable (2). The apparatus (1) is provided with a power unit (9) enabling status updates and light emission also when the electrical cable (2) is disconnected and thus not in use.