User manual

AOAA Kit - User’s Guide
Page 18
Copyright 2012 © Embedded Artists AB
The central controller (the AOAA board in this example) is connected to the Internet and can send
diagnostic data to a service central, where maintenance is scheduled. A service technician can for
example receive a message that immediate maintenance is needed for a specific motor. It can also be
that maintenance is scheduled at a later point in time, but still urgent.
Figure 10 – Advanced Android Accessory Use Case, cont.
When a service technician arrives at the Industrial plant, an Android device is connected to the central
controller (since it is an Android Accessory also). For safety or security reasons, certain operations are
only allowed on-site when the Android device is connected. An example can be firmware updates.
The central controller normally operates in M2M mode (machine to machine communication) but it also
acts as a user interface to the system when a service technician works with the system.
The network can be of any type. CAN networks are common in Industrial plants due to the robustness
of the CAN network. Wireless networks are also common when cabling cost and flexibility is an issue.
The following three sections present the network interfaces in more detail.
Warnings and Alarms
AOA
SMS / email
Network or “Smart Motors”,
or any devices in general