How to use Azure Anomaly Detection on IOT edge module?

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How to use Azure Anomaly Detection on IOT edge module?

Anurag Shelar 181

I want to demo a POC which sends data from SimulatedTemperatureSensor available on Azure Marketplace. This data should be sent to Stream Analytics module on Edge and then Anomaly Detection Module Should send only anomaly data to IOT Hub.
I need some documentation, resources, blogposts which will help me do this task. The current resources speak more of the Cloud aspects of doing it. I want to do this on Edge Side. Needed help on this. @Sander van de Velde | MVP @QuantumCache @António Sérgio Azevedo

QuantumCache 20,676 Reputation points Moderator

2021-03-17T09:11:49.06+00:00

Hello @Anurag Shelar Just checking in if you have had a chance to see the previous response. If the response is helpful, please click "Accept Answer" and upvote it.
Anurag Shelar 181 Reputation points

2021-03-22T09:34:20.757+00:00

Yes @QuantumCache . The answer actual helped and I have accepted it.
Thanks.

Also, how do I write a query which will pickup both temperature and humidity for anomaly detection. For eg. I am using az3166 which is sending temperature and humidity data to IOT Hub. Now I want to detect an anomaly which considers both my parameters.

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QuantumCache 20,676 Reputation points Moderator

2021-03-17T09:11:49.06+00:00

Hello @Anurag Shelar Just checking in if you have had a chance to see the previous response. If the response is helpful, please click "Accept Answer" and upvote it.
Anurag Shelar 181 Reputation points

2021-03-22T09:34:20.757+00:00

Yes @QuantumCache . The answer actual helped and I have accepted it.
Thanks.

Also, how do I write a query which will pickup both temperature and humidity for anomaly detection. For eg. I am using az3166 which is sending temperature and humidity data to IOT Hub. Now I want to detect an anomaly which considers both my parameters.

Answer 1

Sander van de Velde | MVP 36,951 MVP Volunteer Moderator

Hello @Anurag Shelar ,

It is quite easy to roll out a Stream Analytics job as an Azure IoT Edge module that supports Anomaly Detection.

Just follow this blog post where your scenario is described in detail.

Be aware that this is based on machine learning like technology. So there are possible false positives or false negatives.

Do not act on the outcome of anomaly detection only. Use other sources of information too.

Anurag Shelar 181 Reputation points

2021-03-22T09:33:02.153+00:00

Hey @Sander van de Velde | MVP , the blogpost was much more helpful. I wanted to know what difference does it make to run the anomaly detection on edge itself apart from the fact that it will run when there is no internet.

Also, how do I write a query which will pickup both temperature and humidity for anomaly detection. For eg. I am using az3166 which is sending temperature and humidity data to IOT Hub. Now I want to detect an anomaly which considers both my parameters.

thanks,
Anurag
Sander van de Velde | MVP 36,951 Reputation points MVP Volunteer Moderator

2021-03-22T11:53:07.517+00:00

The edge detection will run without cloud access as any iot edge module does.

If a message has to be sent to the cloud, the edge hub module will store it until the connection is back. Then, all messages are sent from that persisted temp storage (extra features as TTL and prioritization are available).

Regarding the temperature and humidity, you have to write separate anomaly detection logic for values, both in the same job.

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