P-EEWSP wave Earthquake Early Warning System

Palert

Features

The Palert detects the P wave and estimates whether the following shockwave is potentially devasting or not, all within 3 seconds.

As part of a regional EEW, given the P wave travels twice as fast as the main seismic activity (S wave), it can estimate the shock wave arrival time. This depends on the epicenter and Palert separation.

Used locally, or as part of an EEW, and with two seismic switch set points for each digital output plus Modbus TCP connectivity, the Palert allows for switching on or off based on the profile of the imminent quake.E.g. Open doors for escape routes, shut down utilities valves, send audible warning, trigger disaster recovery messages, stop lifts and provide every opportunity to save lives and infrastructure.

Earthquake data is also recordable when connected to PC using software provided enabling monitoring of smaller quakes and effect on infrastructure.

Palert

Features

Accelerometer Tri-axial MEMS

  • Type : ±2g (b,c Axes)
  • Range : +1g / -3g (a Axis)
  • Frequency Response : 0.05~20Hz
  • Displacement Frequency Response : 0.075 HPF
  • Shock : 3000g 0.5ms / 10000g 0.1ms

Input / Output

  • Modbus RTU : RS-232 or RS-485 format 19200, N, 8, 1
  • Modbus TCP : 3 Hosts Simultaneously
  • Modbus ID : Default 101, settable
  • Modbus function : Function 3 and 16
  • Active Connect to TCP Server : Support 2 TCP Servers
  • Time Calibration : Via NTP or PC Utility
  • Data Recording : Via Network by PC Utility

Resolution

  • Output Resolution : 16Bit

Earthquaka Gauge

  • Algorithm : Pd, PGA, Displacement, STA/LTA
  • STA Setting Range : 0.1~100 seconds
  • LTA Setting Range : 0.1~200 seconds
  • Event Duration Time : 1~200 seconds

Switch Set-points

  • Digital Output Number : 2
  • Set-point Range : 1~1960gal
  • Contact Type : Normal Open
  • Contact Capacity : 60V / 0.6ADC
  • Hold-On time : User Define

Power

  • Supply Voltage : 10~30 VDC
  • Power(12V) : 3.5W

Size

  • Dimension : 125 * 105 * 30mm
  • Weight : 450g(without Power and Cable)
  • Event Duration Time : 1~200seconds

Environment

  • Operation Temp : -10~60℃
  • Storage Temp : -20~70℃