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1. Introduction

1.1. INFRA System

The INFRA field measurement system consists of rugged sensors which

sends data and status to INFRA Net, where it is processed, stored and

presented through a web interface. There are sensors which monitor

several important quantities at construction sites and infrastructure

projects, such as vibration, noise and dust etcetera.

All data is sent to INFRA Net, using the built-in cellular modem, at

various occasions:

• Monitoring is started or stopped.

• A trigger event has occurred.

• An error event has occurred, e.g., low battery.

• Manual communication is performed by the operator.

• At scheduled communication.

1.2. INFRA C22 Vibration Monitor

The C22 instrument is a complete triaxial wireless vibration monitor

measuring in three directions, vertical, longitudinal, and traverse. It

consists of vibration sensor elements, analog measuring electronics,

analog-digital converters, an embedded microcontroller/DSP for digital

signal processing etc., a small color display, a six-button keypad, a

memory card, a cellular modem, antennas and batteries.

The C22 instrument requires INFRA Net for full remote-control

capability, data presentation, alarms/alerts configuration and setup, and

instrumentation settings. However, most instrument settings can be

changed directly at the unit using the keypad/display.

Sigicom INFRA C22 User Manual

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