Cable Conductor Diameter Determination Using Contactless Signal Scanning
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Solution Overview
Problem
Existing devices for determining cable conductor diameter require the cutter head to be isolated from ground, making them complex and costly to insulate, and necessitate manual detection of cable ends, which is time-consuming.
Innovation Solution
A contactless signal scanning system using an electrically insulated cable guide part allows the use of conventionally grounded cutter heads, enabling automated diameter determination without grounding the cable end, using inductive and capacitive couplers to detect signal changes and calculate conductor diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the cutter head is isolated from ground to enable signal scanning, then the conductor diameter can be determined, but the device complexity and insulation cost increase significantly
Solution Approach 1:
The patent introduces an electrically insulated cable guide part as an intermediary component between the grounded cutter head and the signal scanning system. This mediator allows the signal to be coupled onto the cable conductor and scanned without requiring the cutter head itself to be insulated, thus resolving the contradiction between measurement capability and device complexity
Solution Approach 2:
The patent replaces the mechanical/electrical isolation approach with a contactless signal coupling method using inductive and capacitive couplers. This substitution eliminates the need for physical insulation of the cutter head while maintaining the ability to determine conductor diameter through signal scanning
2Measurement precision
If the cable end is connected to ground to enable signal scanning, then the conductor diameter can be determined, but the setup time increases due to manual cable end detection
Solution Approach 1:
The patent enables the system to automatically detect the cable end and initiate diameter determination without manual intervention. The signal coupling and scanning system automatically adapts to the cable position, eliminating the time-consuming manual detection step while maintaining measurement accuracy
3Ease of manufacture
If a conventional grounded cutter head is used, then the device cost is reduced, but the signal cannot be scanned to determine conductor diameter
Solution Approach 1:
The patent separates the functions of the cutter head and the signal scanning system. The cutter head remains a simple grounded mechanical component for cutting, while the diameter determination function is achieved through separate signal coupling and scanning components, allowing cost-effective manufacturing of the cutter head while maintaining measurement capability
Solution Approach 2:
The electrically insulated cable guide part serves as a mediator that enables signal scanning without requiring the cutter head to be insulated or modified, thus maintaining the cost-effectiveness of conventional cutter heads while adding measurement functionality
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
This solution simplifies the setup by allowing grounded cutter heads, reduces setup time, and makes the process more cost-effective, enabling automated and efficient cable processing.
Implementation Method 1
A coil couples a signal onto the cable to be determined
Implementation Method 2
a contactless output coupler (10) is provided for scanning a signal on the cable
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The apparatus has a coupler (9) for applying a signal to the cable and a decoupler (18) for sampling the signal on the cable. A signal unit (8) generates the signal to be applied and measures the signal on the cable. The decoupler operates in a non-contact manner to sample the signal on the cable. The signal is variable by means of at least one contact element which contacts the cable conductor.