Hello and welcome to a further episode of Study Know-how in 5-minutes and this is Venkatesh, the founder of MAKERDEMY.
In this episode, we will master about IoT gateways. If you are an IoT enthusiast, it is probable that you have across the phrase “IoT gateway”. What accurately is an IoT gateway? Perfectly, you can assume of an IoT gateway as a type of a bridge that connects the sensor networks to the cloud IoT platform. You might question why do we have to have this bridge in the to start with put? Just cannot the sensor nodes not instantly talk to the cloud? I have observed some IoT prototypes the place the Raspberry Pi is linked to the sensors and by way of WiFi connects to some cloud IoT system? Perfectly, initial of all, prototypes are just that – prototypes. Actual-earth IoT implementations occur with a selection of difficulties and constraints. Generally, the sensor nodes are devices that operate on batteries for decades. In other terms, they are energy-constrained. For the reason that of our cellular telephones, we are familiar with WiFi and cellular wi-fi systems as a result of which we join to the online. WiFi consumes a good deal of ability and cellular consumes even more electricity than WiFi. This is why you finish up charging your mobile cellular phone on a each day basis. Hence, most IoT implementations use some sort of reduced energy networks like the Zigbee or BLE mesh or LoRa. In situation, you are unfamiliar with these systems, test out the other films in this series, where we have covered the higher than described wi-fi radio technologies.
In this article is in which the IoT gateways occur in. As discussed right before, the IoT gateway functions as a bridge concerning the sensor nodes and the IoT cloud. A standard IoT gateway is mains powered contrary to the sensor nodes, which are battery-powered. An IoT gateway may perhaps get in sensor information and is equipped to “speak” a number of protocols. For illustration, there could be an IoT gateway that connects to hundreds of sensors using the LoRa community and then channel all this facts to the cloud by using WiFi/Mobile, ethernet or even satellite connection and may use MQTT/HTTP/CoAP or any other conventional protocol. And how is it that the gateway can use these radio systems? Effectively, it is mainly because it is mains driven, and is not a constrained machine. We just will need just one impressive mains operated device, the gateway, that can connect to Ethernet or Cellular, and can have various low-cost constrained sensor nodes that link to this gateway. In practice, there are many gateways in an IoT system.
Now that we know what an IoT gateway is, can you feel of a device that can act as a fundamental IoT gateway? Perfectly, if your response is ‘The Wise Phone”, you are proper. Most fashionable smartphones have various radio technologies for connectivity like the BLE, WiFi and mobile. With some ingenuity can act as a essential IoT gateway product.
Hyperlinks:
Introduction to Zigbee: https://youtu.be/QXV_HgGO–g
What is BLE: https://youtu.be/NSkIHdV6NoY
What is LoRa: https://youtu.be/WdJxXzSE9Gs
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