Build an IoT Condition Monitoring App

SAP Web IDE Full-Stack is a powerful, extensible, web-based integrated development tool that simplifies end-to-end application development for SAP Cloud Platform.

Start SAP Web IDE Full-Stack using the URL provided by your team administrator. The URL would look something like this: https://webidecp-aae9c2f7b.dispatcher.hana.ondemand.com/ only that the account ID would be different. You would find it at http://hana.ondemand.com/, where you should find your global account, your Neo sub-account, and SAP Web IDE Full-Stack under Services.

To log in, use the same email address and password you are using within the thing modeler. The home screen looks like this:

In SAP Web IDE go to Preferences > Features.

Turn on the following features:

• IoT Application Enablement
• Layout Editor
• Storyboard.

In the Development perspective, right-click Workspace and create a new project from a template (there are other ways to do this, for example, from the home page).

Choose IoT Application from the Internet of Things category, and click Next.

Enter greenhousemonitor as a project name and your user ID as the namespace, then click Next.

On the Data Source tab, select:

• IoTAS-ADVANCEDLIST-THING-ODATA or similar as a service
• All property sets for your greenhouse thing type in your package (search for greenhouse)

Click Next, keeping all of the default settings for each of the page types until the wizard is finished. This generates a multi-page IoT application for you.

SAP Web IDE will generate the code and will open the new application in the Code Editor. Now open the application folder and select any of the subfolders to examine the generated source files.

You can change the generated source code afterwards as you see fit. Right now we want to explore the data that we have collected with the application. So to see a preview of the application you can start it right from SAP Web IDE. To do so, click the green button (below the Deploy menu in the picture above). This should bring up the application in a new tab.

Depending on how many devices you have on-boarded, you will see one or multiple greenhouses in the list on the left. Click one to zoom in and once you have zoomed in to see only one click on it in the map, and then click Analysis Page. (Feel free to explore the other options on how to navigate the application another time).

This will show this chart:

Now you can add measures other then humidity with the Measured Values button, change the time-frame with the slider at the bottom or with the buttons labeled 7 Days, and you can look for patterns in the data.

The example below shows 2 patterns – the light sensor in this case seems to jump between two extremes, day vs night. Let’s look at the second one: the humidity provides 140% values at times – these values are probably due to an error in the sensor.

You will discover that if you collect sensor data from the real world, there will always be surprises, both in that you cannot see what you thought you would find in the data, and also that you see patterns in the data that you did not expect to see.

For more support on in-depth topics on building an IoT Application, refer to http://developer.sap.com/ under IoT.