Digital Node

Model EWN-01D Overview

Model EWN-01D wireless node is designed to expand the data collection possibilities from digital sensors via wireless RF network, eliminating the need for running lengthy cables. These are especially useful at locations where sensors are distributed over wide areas and running cable lengths to long distances can be tricky and /or at locations where construction activity can disrupt the running sensor cables.

The wireless digital node is a highly reliable integrated system which is capable of taking readings from any digital sensor, like in-place inclinometer sensor chain with SDI-12 output,  and reporting measurements through long range radio frequency wireless communication network to the Gateway. A cloud-hosted data management and configuration software is used to manage the network. The configuration is done with an easy to use smartphone application that comes free with the system. Gateway uploads the collected sensor data to the central/cloud server.

Drishti, a cloud-hosted data management software is available to process and manage the huge data collected at project site. The data is accessible 24 x 7, in meaningful visual formats, to all the related authorities. The system can generate automatic reports and provide automated alerts over SMS or email for any reading crossing the pre-defined alert levels.

Specifications

DIGITAL NODE

 Digital Inputs

 Following digital communication supported sensors

 RS232 serial port

 RS485 full/half duplex serial port

 2 SDI-12 bidirectional ports or programmable interrupt driven GPIO

 Sensor address space

 255 individually addressable sensors (limited by current consumption per sensor)

 Sensor power supply options

 5V / 12V / 24V DC

 @100 mA when using batteries;

 @200 mA when using an external power supply

 Operating temperature

 -40°C to 80°C

 Internal memory

 Up to 500,000 readings with time

 Supply Voltage

 2.7 V to 5.5 V

RADIO FREQUENCY

 Radio bands

 Sub-1 GHz band – complies with unlicensed ISM band specifications in most countries

 Link data speed

 625 bps – 2.5 kbps variable bitrate

 Data security

 AES128 encrypted end to end data