Communication Harness Unauthorized Connection Detection
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Solution Overview
Problem
Existing communication systems face challenges in detecting unauthorized connections to communication lines, as conventional methods either fail to detect unauthorized apparatuses when a regular tool is connected or require costly and bulky signal measurement equipment.
Innovation Solution
A communication system with a detection unit that measures voltage changes on conductive members covered by insulating and conductive layers, allowing for the detection of unauthorized connections without additional measurement apparatuses, and includes a notification and stop mechanism to prevent unauthorized usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage measurement is performed on communication lines to detect unauthorized connections, then detection capability is improved, but device complexity and cost increase due to requiring additional measurement apparatus
Solution Approach 1:
The communication apparatus performs both communication functions and unauthorized connection detection functions using existing components. The voltage measurement capability is integrated into the regular communication circuitry, allowing the same apparatus to serve multiple purposes without requiring separate dedicated measurement devices.
Solution Approach 2:
The communication line's own voltage characteristics are used to detect unauthorized connections. The system leverages the natural voltage presence in the communication line during normal operation, eliminating the need for external voltage sources or separate measurement apparatus. The line itself provides the measurement signal.
2Measurement precision
If waveform measurement is performed to detect unauthorized connections, then detection accuracy is improved, but device size and cost increase due to requiring high-resolution measurement equipment
Solution Approach 1:
Instead of using expensive, bulky oscilloscope-like equipment with high temporal resolution, the invention employs simple voltage measurement circuits that are inexpensive and compact. The approach sacrifices waveform analysis capability but maintains sufficient detection accuracy using basic voltage sensing, thereby reducing apparatus size and cost.
3Adaptability or versatility
If regular tools are connected to communication lines, then communication functionality is improved, but unauthorized connection detection capability deteriorates
Solution Approach 1:
The system detects unauthorized connections by monitoring changes in voltage parameters of the communication line. When a regular tool is connected, the voltage remains within expected ranges. When an unauthorized apparatus is connected, the voltage parameter changes detectably, enabling differentiation between authorized and unauthorized connections while maintaining compatibility with regular tools.
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 easy detection of unauthorized connections, reduces electromagnetic noise, and prevents data leakage by stopping communication when unauthorized access is detected, without increasing the size or cost of communication apparatuses.
Implementation Method 1
a voltage is applied to the first conductive member, and the detection unit detects whether or not the cover portion has been removed, by measuring a voltage of the first conductive member
Data Source
AI summary
Provided are a communication system and a harness configured to detect a connection of an unauthorized apparatus to a communication line. In a communication system in which a plurality of communication apparatuses perform communication via communication lines, a communication line includes conductive wires for transferring signals and a cover portion that covers the conductive wires. The communication system includes a detection unit for detecting whether or not the cover portion has been removed. If removal of the cover portion of the communication line is detected by the detection unit, it can be determined that an unauthorized apparatus is connected to the communication line.