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If no other gateways are available, the sensor could appear offline. Additionally, if a sensor uses another sensor or a relay node to establish a connection to the gateway, ensure these devices are also online as necessary.
In this article, we'll guide you through our approach to engineering offline-resilient IoT applications, turning the challenge of disconnection into an opportunity for enhanced functionality.
There are several reasons why a sensor may suddenly look offline. Here are some of the most common ones with tips on how to fix it.
With the current approach, I am not sure if it is possible to have the UI module accessible and make the other modules go offline. A better approach to achieve this is by creating the UI module on a different edge device and make this device act as transparent gateway to the other three modules.
In a real world scenario, your edge device is installed close to the devices from where you want to collect telemetry. In other words, the edge device will be on the same local network as your sensors (otherwise, we wouldn't call it an edge device).
This leads to the need of an offline capable data acquisition methodology using an edge device (here: Raspberry Pi) and external sensors. The solution must be able to save data continuously not running out of capacity as well as to be usable in an easy way.
You cannot use the sensor offline, but you can prepare the experiment for it and then attach it when ready to collect the data. This option makes it faster to share a sensor during a lesson or lab in which there are not enough sensors for everyone.
The AlertAQ™ water and A/C intelligence platform will notify you if your sensors lose their connection to our system. These are called Offline Alerts. Read on below for tips about the best way to get your sensors back online.
Reposition sensor → Check if distance from Hub causes disconnection . Place Hub and sensor elevated in same space ; Avoid obstacles and signal interference ; Monitor real-time signal level: H5 >>> Sensor App >>> Select sensor >>> Press encoder twice >>> View signal level. Software/hardware failure If sensor remains offline when placed near ...
In this article, we'll guide you through an approach to engineering offline-resilient IoT applications, turning the challenge of disconnection into an opportunity for enhanced functionality.