Seismic Seismic Source Sigma 4 - PPV Monitoring System

The Sigma 4 PPV Monitoring System is designed to monitor source strength in real time during seismic operations. A Sigma 4 nodal seismograph is placed between the source and the asset to be protected, allowing crews to monitor Peak Particle Velocity, or PPV, as source activity occurs. As the source starts, data is wirelessly transmitted to an Android tablet for analysis and display. At the first sign of a violation, source activity can be halted by the operator, helping protect nearby structures, utilities, and sensitive assets. The system combines Sigma 4 seismic hardware, wireless field display, and Event Monitor software for real-time PPV viewing, post-processing, plots, analysis, and reporting.

Features

• Monitors source strength in real time
• Measures Peak Particle Velocity during source activity
• Displays PPV levels on an Android tablet
• Allows operators to respond quickly to possible vibration violations

• Uses a Sigma 4 nodal seismograph as the digitizing system
• Includes 3C 2Hz geophone
• 24-bit seismic recording system
• Internal battery
• Integrated GPS
• Wi-Fi transmitter support

• Small Wi-Fi module sends PPV data to the Android tablet
• Provides instant results for the operator
• Allows real-time analysis and viewing of PPV levels
• Supports faster on-site decisions

• Data can be downloaded into Event Monitor for post-processing
• Compares observed PPV levels to legal limits
• Analyzes vibration data
• Generates plots and analysis
• Outputs reports for the crew and client