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Optimising Earthquake Monitoring Systems with GPRS IO

Overview

The system integrator provides earthquake-monitoring systems that collect earthquake information. In this project, 18 remote earthquake-monitoring stations are to be positioned throughout the country to be monitored from a control center. As wiring for communication is difficult and expensive, GPRS communication is the best choice for such application.

Previously, the earthquake monitoring system consisted of a GPRS modem, a single board computer and a RS-485 I/O module, but this combination had many compatibility issues because of the different components. For this reason, the customer wanted an all-in-one solution to integrate the various modules for an improved earthquake monitoring system.

System Requirements:
•  GPRS communication to save wiring and maintenance costs
•  All-in-one solution for greater reliability
•  Serial port for seismometer and DIO channels for connecting sensors
•  Sending alarm messages proactively to save bandwidth

 

Solution

In this project MOXA ioLogik W5340 was used to connect the seismometers through serial ports. When there is change in any status, ioLogik W5340 will send out an alarm message to the control site by TCP/UDP/e-mail/SMS. GPRS was used to transmit the data from the remote stations to the control center. There was cost savings from the reduction of wiring. The ioLogik W5340 all-in-one design also decreased the total number of failure points.

MOXA ioLogik W5340 features reporting by exception function which can efficiently lower the transmission traffic of bandwidth-critical GPRS communication applications. When data transmission is not required, the GPRS communication function will auto switch to sleep mode to conserve power. IoLogik will continue to collect data from the remote stations and when a pre-defined event is triggered GPRS communications will resume to send an alarm message. In addition, the ioLogik built-in "if-then-else" Click&Go control logic provides local control capabilities to enable effortless programming and labor costs savings.

 

Related Products

Active Ethernet I/O

MOXA ioLogik W5340
Active GPRS I/O with 4 AIs, 8 DIOs, and 2 relay outputs

 
 

Solutions

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