The increasing need for low power, long range communication and localization because of Internet of Things
8 likes1,602 views
Prof. Maarten Weyn gave a presentation on low-power communication and localization. He discussed his research in localization from opportunistic to just enough systems and low-power communication. Weyn is also the founder of one spin-off company and helped facilitate two others. He discussed low-power applications that can run for years on AA batteries or other small batteries. Weyn also covered the DASH7 protocol for low-power, mid-range wireless sensor communication and its open standard for sub-GHz ISM bands.
The increasing need for low power, long range communication and localization because of Internet of Things
- 1. The increasing need for low-power, long-range communication and localization Prof. Maarten Weyn Wipro May 7th 2015 maarten.weyn@uantwerpen.be
- 2. 2
- 3. Maarten Weyn Research Localization from Opportunistic to Just Enough Low-power communication Low-power embedded systems 3
- 4. Maarten Weyn Education Mobile Communication (Eng.) Digital Communication Ambient Intelligence Low Power Connected Systems (Eng.) 4
- 5. Maarten Weyn Entrepreneurship Founder of 1 spin-off company Facilitator of 2 other spin-off companies Director of DASH7 Alliance 5
- 6. 6
- 7. 7
- 14. 14
- 15. 15
- 16. 16
- 17. Low-Power 17 0.5 5 Watt
- 19. Low-Power Applications 19 2 AA batteries 1 year 650 亮W
- 20. Low-Power Applications 20 5 years 8.6 Wh battery 0.2 mW
- 21. 21
- 22. 22
- 23. Low Power Communication 23 Frequency Data rate Range Standardization Power Consumption Integration capabilities
- 24. Frequency 24 433 868/915 2400 MHz
- 25. 25 Data rate 0.1 250 1000 kbps1000.3 9.6 20 50
- 26. Range 100 5 km 50km30 Low-Range Long-Range Mid-Range 26
- 28. 8100.231 0.306 4 19001 4750.390 0.550 Power Consumption Energy Energy (mJ) 28
- 30. 30
- 31. Localization Signal Strength Attenuation Pattern Matching (Fingerprinting) Presence / Proximity Time (Ranging) Time of Flight - Time Difference of Arrival Round Trip Time Direction Finding / Angle of Arrival
- 33. 33 Proximity
- 35. 35 Origin The Dash7 Alliance Protocol originates from ISO/IEC 18000-7, The DASH7 Alliance (D7A) enhanced ISO 18000-7 for Ultra Low Power, Mid-Range Wireless Sensor Communication. The DASH7 Alliance expanded the air interface to all sub-GHZ ISM/SRD bands.
- 37. 37 Distance Complexity Energy Latency Tree MeshStar Passive RFID Tags can only be read in the intermediate proximity of a reader Active RFID Longer range interrogators Master/Slave DASH7: Extensible Star Simple routing Asynchronous Tag-Talk-First Tag-to-Tag Mesh Range depends on number of router nodes Congestion Routing Complexity Latency Routers need to be powered Each hop consumes energy Network Topology
- 39. 39 Power Budget 14% < 1% 35% 50% Total Average Consumption: 52 亮A
- 41. 41 Roles Authentication Permissions Data Elements DASH7 Stack Config Application Data
- 42. 42 USE CASE Collection of humidity sensor data
- 43. 43 Traditional Approach Application periodically measures humidity and sends data to the gateway. Application implements communication
- 44. 44 Application periodically measures humidity and writes value to the file system Data Elements can be accessed by DASH7 Data Elements
- 45. 45 Application periodically measures humidity and writes value to the file system Gateway queries data from Data Element All Nodes matching query answer with requested data Queries
- 46. 46 NotificationApplication periodically measures humidity and writes value to the file system DASH7 detects change in Data Element If criteria is matched, Sensor notifies requested data
- 47. 47 Context Aware Sensor and Actuator Data Propagation 47 Write and read to/from files Configure system through configuration files Configured through file system Handles scheduled scan cycles Handles queries from other devices Handles queries and notifications on file changes File system configurable over the air
- 48. 48 Open Source Stack for DASH7
- 49. 49 Open Source Stack for DASH7
- 51. 51
- 52. 52
- 53. 53
- 54. 54 The increasing need for low-power, long-range communication and localization Prof. Maarten Weyn Wipro May 7th 2015 maarten.weyn@uantwerpen.be