IoT stands for Internet of Things. IoT data acquisition systems transmit the measured values by radio and make the data available in a data cloud.

IoT data acquisition systems use the newly available Narrow Band radio standards SigFox, LoRaWan and NBIoT. These radio standards are characterised by extremely low power consumption, low cost, high range, data security and an unprecedented ability to penetrate obstacles, and are therefore ideally suited to the requirements of data collection in agriculture and horticulture. However, these systems have a limited data transfer capacity, only a limited number of sensors can be connected per system, and alarms cannot be sent by SMS but only by email.

The most common IoT transmission standards are:

Sigfox

This is a paid radio standard and is offered by a French telecommunications company that sets up its own global radio network to connect objects wirelessly to the Internet. The infrastructure used is completely independent of existing networks and no SIM card is required. The SigFox radio masts then transmit the received data to the traditional Internet, where it is made accessible to the user. The network coverage varies from country to country, in Germany currently about 80% of the area is covered. The use of SigFox-based data acquisition devices incurs running costs, which are, however, lower than the costs of conventional mobile phone network.

LoRaWan

Is a free open source wireless standard. LoRa-based data acquisition devices send their data to a gateway (receiving station), which in turn transfers this data to the Internet, where it is then made accessible to the user. LoRa devices can be connected to an existing gateway, or if there is no gateway within range, a separate gateway can be installed at low cost. Setting up your own LoRa network is simple in principle, but still requires technical understanding. Use of LoRa based data acquisition devices has no running costs.

lora network

NBIoT

NBIoT radio data transmission uses the existing infrastructure of conventional mobile phone network, which is basically a radio protocol closely based on conventional mobile phone, but which does not offer numerous services not required for IoT applications such as voice or SMS messages. The data received via NBIoT radio is also transferred to the Internet, where it is made accessible to the user. NBIoT data acquisition devices therefore do not require their own network infrastructure but a special SIM card. This results in running costs, which are, however, significantly lower than the costs of conventional mobile phone networks.

nbiot network