IoT Seminar (Oct. 2016) Juan Perez - Microsoft
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The document discusses the opportunities for IoT developers with Azure IoT Hub. It describes the different profiles of IoT developers including device, gateway, and cloud service developers. It then explains how Azure IoT Hub can help with device management and communication through features like device twins, methods, and jobs to schedule operations on large numbers of devices.
IoT Seminar (Oct. 2016) Juan Perez - Microsoft
- 1. The IoT Developer Opportunity with Azure IoT Hub Juan J. Perez Principal Program Manager Azure IoT
- 2. IoT solutions are very diverse and multi-dimensional Vertical (stack) and Horizontal (flow and translation) Device IoT Gateway Cloud Service Physical WiFi Physical WiFi Physical GSM Network Transport Presentation Application IPv4 TCP TLS MQTT App Code Physical Ethernet Application HTTP Cloud Platform as a Service Network Transport Presentation Application IPv4 TCP TLS MQTT Azure IoT Hub Physical Ethernet App Code Network Transport Presentation Application IPv4 TCP TLS HTTP Network Transport Presentation Application IPv4 UDP DTLS CoAP Network Transport Presentation Application IPv4 UDP DTLS CoAP Gateway App Azure IoT Gateway SDK
- 3. Different profiles of IoT developers Device IoT Gateway Cloud Service Azure IoT Gateway SDKApp Code Cloud Platform as a Service Azure IoT Hub App Code Module Module Module Device Developer Gateway/Device Developer Cloud Service Application Developer • Embedded/sensors • Hardware aware • Firmware aware • Radio and protocol aware • Messaging aware • Radio and protocol translation aware • OS aware • Embedded/Sensors • Hardware aware • Cloud/web/mobile aware • Messaging aware • Stream processing and machine learning aware • Line of business aware
- 4. How does Azure IoT Hub help? • Given 1 million devices deployed world-wide, how do you find the 10 that you’re looking for? • Device twin properties • Query based on device resources in device twin • SELECT * from devices where ‘/3/0/1’ == ‘Acme Manufacturing Inc.’ • How do you read or execute on 10, 20k, or 1 million devices? • Schedule the request for the right time • Do the request • Wait for response • Track results • Deal with failures
- 5. Azure IoT Hub Device Management Enables synchronization of (desired and reported) properties between cloud and device Enables interactive device actions Enables the broadcast and scheduling of twin changes and methods at scale Enables dynamic reporting to attest device status and healt Enables management on a diverse set of device platforms and connectivity models
- 6. Device app Back end Azure IoT Device Twin Device twin Properties Desired Reported Tags Read, write Read, write Read Read, receive change notifications Read, write IoT Hub
- 7. Physical Device IoT Hub IoT Hub Device Method Back end application Invoke Method Device method handler Request Response Request Response 12 3 4
- 8. Physical Device IoT Hub IoT Hub Device Method (disconnected device) Back end application Invoke Method Device method handler Physical Device IoT Hub Back end application Invoke Method Device method handler Device Disconnected Request Response Request Response 12 3 4 Request Response 1 2
- 9. IoT Hub Jobs for scheduling device updates Back end application Schedule Update/Method • DeviceList • TwinPatch/Method • StartTime (TStart) 1 Job Update T0 TStart 2 Physical Device Device 1 Event handler 3 Update TStart 2 Physical Device Device 2 Event handler 3 Scheduling and tracking updates against a large set of device is a non-trivial problem.
- 10. IoT Hub Jobs for scheduling device twin updates Back end application ScheduleTwinUpdate • DeviceList • TwinPatch • StartTime (TStart) • MaxTimeExecution 1 Device twin Device 1 Properties.Desired Data Job Twin Update T0 TStart 2 Physical Device Device 1 Twin changed handler Twin Changed Event (when device connects) 3
- 11. IoT Hub Twin update jobs for many devices Back end application ScheduleTwinUpdate • TwinPatch • DeviceList • StartTime (TStart) • MaxTimeExecution Get Job or Job Query 1 4 Query Device twin Device 1 Properties.Desired Data Device twin Device 2 Properties.Desired Data Device twin Device (n) Properties.Desired Data Job Twin Update Twin Update Twin Update T0 TStart TStart TStart 2 2 2 Physical Device Device 1 Twin changed handler Physical Device Device 2 Twin changed handler Physical Device Device (n) Twin changed handler Twin Changed Event Twin Changed Event Twin Changed Event 3 3 3
- 12. IoT Hub Jobs for invoking device methods Back end application ScheduleDeviceMethod • MethodParams • DeviceList • StartTime (TStart) • MaxTimeExecution 1 Job Invoke Device Method T0 2 Physical Device Device 1 Device method handler Device Method Request at TStart* 3 * Requires device to be connected. IoT Hub responds immediately with error for disconnected device. Device Method Response
- 13. IoT Hub Device method jobs for many devices Back end application ScheduleTwinUpdate • TwinPatch • DeviceList • StartTime (TStart) • MaxTimeExecution Get Job or Job Query 1 4 Query Job Invoke Device Method Invoke Device Method Invoke Device Method T0 2 2 2 Physical Device Device 1 Device method handler Physical Device Device 2 Device method handler Physical Device Device (n) Device method handler Device Method Request at TStart Device Method Request at TStart Device Method Request at TStart Device Method Response Device Method Response Device Method Response 3 3 3
- 14. LWM2M and Azure IoT Azure IoT Gateway SDK LWM2M Device Azure IoT HubLWM2M /CoAP Protocol Module Azure IoT clientTranslation Device twin Methods Jobs Queries IoT Cloud Application LWM2M Device Twin Methods