spread spectrum time domain reflectometry max nodder · • leader in sstdr live conductor...
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Spread Spectrum Time Domain Reflectometry
Max Nodder
• Leader in SSTDR live conductor monitoring technology
• Founded in 2004, headquartered in Salt Lake City, Utah
• Patented technology
• 10 years and $13M of US Government development contract funding
• Commercialisation in 2017
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TDR Basics
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Very low energy in the superimposed signal
Time
Energy
Time
Energy
Narrow Time: Interferes with other signalsInterfered with by other signals
TDR SSTDR
Broad Time: No significant interference with other signals.
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SSTDR on Live Communication Lines
SSTDR Signals are generally 80mV or less, enabling them to sit well below the allowable noise margin of most electrical or communication systems.
However, they can still be detected by the fault location system because of their unique pattern.
Mil Std 1553 Signal Plus SSTDR
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Applications in safety, security, and reliability
Intermittent faults during
in-flight conditions
Back on the ground,“no fault found”
Fault detected, but where?
Works up to 6 Km
Locate with 98% accuracy
Harsh environments
Complex infrastructures
Uninterrupted operations
Cable theft: Detect,
locate and notify
Detect electricity theft
before the meter
Network Security
Illegal taps and
network breaches
Detect, identify and locate faults events in live systems.
Collect data to predict or prevent fault conditions
Predictive
Hard & intermittent
fault detection
CableGuardian® for Prediction and Location of Electrical Cable Faults
Low Voltage Power Systems
A Viper Subsea and LiveWire solution
Copyright © 2017 Viper Innovations Ltd, All Rights Reserved
CableGuardian®
A system of single or distributed units providing constant:
Monitoring and trending of cable integrity and basic electrical parameters
Identification and location of:
Short circuits
Open circuits
Intermittent faults
Insulation Resistance degradation
Data hand-off to client’s infrastructure or cloud storage
Data analytics via V-SENTINEL
The first platform to provide live fault locationinformation for both insulation and conductor faults
Copyright © 2017 Viper Innovations Ltd, All Rights Reserved
CableGuardian Industrial Heritage
Extensive track record in the offshore Oil & Gas industry
Viper Subsea V-LIM Line Integrity Monitor
System IR, downstream IR, capacitance, Line V & I,Polarisation Index, Dielectric Absorption Ratio
Proactive monitoring of subsea cables, connectors andsystems in challenging environments around the world
Aerospace industry cable testers and tools
LiveWire Innovation SSTDRSpread Spectrum Time Domain Reflectometry
Operational monitoring for detection of intermittentand hard faults (shorts and opens)
Copyright © 2017 Viper Innovations Ltd, All Rights Reserved
CableGuardian for Subsea Applications
Features:
Incorporates V-LIM Technology
IR Monitoring (1kohm to 1Gohm)
Capacitance (up to 150µF)
Dielectric Absorption Ratio
Polarisation Index
Voltage, Current, Power, Frequency
Incorporates SSTDR Technology
Permits Remote Testing of Umbilical
Remote enabling of V-LIFE
Configurable Output
Remote Monitoring