Page 21 - Energize October 2022

NEWS

data via the Internet. This means that sensor data, for example, that has been generated • Sent via licensed radio frequencies.
at different locations around the world can be amalgamated in one system (cloud). A Only mobile communications
prerequisite for this function is that the device, the machine or the sensor has access to the providers may operate these radio
Internet. For the measuring solution from Keller, we use autonomous, battery-operated IoT networks.
devices that transmit data via various radio interfaces. • Worldwide communication system
One advantage is that these devices can be installed with little effort as there is no
need for cabling and the measuring devices do not have to be incorporated into a company Security
communication network. So that the devices and their batteries have a service life of The data is transmitted in encrypted
several years, standardised radio technologies (LoRaWAN as well as mobile communications form for LoRaWAN and mobile
2G, 3G, 4G, NB-IoT, LTE-M) with low energy consumption and a long transmission range communications, from the measuring
of 15 km and over are used alongside an intelligent, energy-saving electronics system. point to the cloud. Current
Whether LoRaWan or mobile communications are used depends on the requirements for cryptographic processes are used here.
the data recording or on the type of radio coverage available on site. The encryption can be stronger for
Data can be exchanged bidirectionally in both radio systems. Not only does this mean mobile communications as a result of
that measured values can be sent from the measuring point to the central collection point the higher data throughput and the
(cloud), but communication from the central collection point to each measuring point is choice of encryption types available.
also possible too. Communication to the device is used for configuration notifications, KOLIBRI Cloud by Keller offers
which, for example, change a measuring interval from a distance. The communication simple and convenient access to the
interface from Keller devices with LoRaWAN (ADT1) as well as mobile communications measurement data with your own
devices (ARC1) is well documented, and a software sample code is available for integration personal login and SSL encryption.
into the company’s own application. With the KOLIBRI Cloud web app,
All devices are designed so that a software update can be installed on the devices. This data is available without the need
is extremely helpful in the context of the extension of radio technologies or modifications to set up and maintain a database.
of wireless protocols. The electronics of the ARC1 mobile communications device for data Measurement data can be displayed
transmission have a modular design and allow replacement of the radio module in the in graphic form in no time at all and
event of future technology changes so that the transmission device can be adapted again to the export function allows you to
the latest mobile communications generation with a small intervention and without having download your data as Excel or CSV
to replace the entire device. files. Measuring points are effortlessly
and efficiently monitored with the
Features of LoRaWAN transmission integrated alarm system. For instance,
• The data is exchanged via gateways (antennas) that are connected to the network a warning can be triggered via e-mail
server over the Inter- net. The measurement data is forwarded from the network if there is an increase in the water
server to the KOLIBRI Cloud or the application accesses the data from the network level or a battery is running low.
server. Individual measured values are transmitted at the shortest possible intervals of The cloud software interface (API)
approximately 10 minutes. allows measured values from another
• The transmission normally takes place without confirmation of whether it was software system to be called up in a
successful. standardised JSON format via HTTPS.
• With LoRaWAN, radio transmission takes place via public networks (often belonging to This way, the data can be continuously
mobile communications providers), private networks (a city has its own network) or an transferred into the company’s own
open network such as The Things Network (TTN). software system, therefore making
• Transmission distances of up to 15 km or over, depending on the conditions on site. processes more efficient, which is the
• Operation without a SIM card / transmission device must be registered to a network. goal of digitalisation with IoT.
• Sent via a licence-free radio frequency. Everyone can establish their own radio system. Keller provides software developers
• There is (still) no global radio network. with extensive documentation on the
API.
Features of mobile communications transmission (2G 3G 4G / NB-IoT LTE-M)
• Data is exchanged with the KOLIBRI Cloud via standardised processes such as FTP or Contact Instrotech, Phone 010 595-1831,
e-mail; it does not matter which technology is used (2G 3G 4G / NB-IoT LTE-M). sales@instrotech.co.za,
• Lots of measured values can be recorded in a short interval (1 minute) Data is mostly www.instrotech.co.za
transmitted in data packages that contain several measured values. Facebook: bit.ly/3rj1SWY
• Data is always transmitted with acknowledgement of receipt. The transmitter will see LinkedIn: bit.ly/3rkfKjL
whether the transmission was successful. YouTube: bit.ly/3irItiy
• Radio transmission only uses networks of mobile communications providers. Product: https://bit.ly/3cGRyF4
• Transmission distances of 15 km and over, depending on the conditions on site. Hashtags: #Keller #Pressure
• Operation with a SIM card. #Instrotech #ioT

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