The gateway is designed to receive messages from 7bit AirPoint telemetry modules via the Lora radio channel and send them to other systems via MQTT protocol, via a local network or the Internet, in a transparent bridge mode, without intermediate storage, visualization, and analysis.
The module is a communication gateway that sends the received data from 7bit AirPoint sensors to the MQTT broker.
Data can be transferred in any format (JSON, XML, text).
In general, the system consists of one or more wireless, stand-alone 7Bit Airpoint radio modules and 7Bit Airgate data gateway(s) that receive messages over the radio channel and transmit them to any upper-level system, such as a WebHMI, SCADA second or cloud-based IoT platforms such as : Amazon AWS, Microsoft Azure, and others, over a local network or over the Internet, using the MQTT protocol.
Depending on the type of antenna selected, the communication range between AirPoint and AirGate can reach 10 km.
Within an urban area, even a single gateway can create a fairly large coverage area.
As a rule, with a good gateway location, modules can be installed anywhere in any building.
| Power supply | PoE, Micro USB (+5V), 12 – 48 VDC |
|---|---|
| Network connection | Ethernet, Wi-Fi b/g/n (built-in antenna) |
| Protocol | MQTT |
| Configuration | Web – interface |
| Network node max. count | 255 |
| Environmental | Operation inside premises, degree of protection: IP 40 |
| Options | Optional protective coating of the board with dielectric varnish, remote antenna 8dBi, SMA, 868 MHz |
| Dimensions | 70 х 70 х 26 mm. Supplied antenns length 108 mm. |
This protocol is widely used in the IoT (Internet of Things) world. Its main difference from most industrial protocols is that the initiator of the exchange is the slave device (sensor), not the data collection system. Information transfer is realized according to the Publisher/Subscriber scheme and takes place through an intermediate server (Broker). The data source (Publisher) sends data to the server (Broker), and other systems and devices, being subscribers, read it from there. This method of interaction is well suited for transmitting events and messages when devices periodically communicate themselves. Thus, MQTT is not really a “real-time” protocol and is mainly used for data collection rather than control.