A short presentation about home automation, openhab internals, changes in 2.x and integration with bacnet. Also some short showcase of Influx and Grafana and used for data visualisation.

1. IOT&HOME AUTOMATION WARSAW
PROJECT
DATE CLIENT
2017.07.24
OPENHAB INFLUX UND GRAFANA
BACNET DATASOURCE

2. DISCLAIMER
TECH STUFF IS SUBJECT OF CHANGE OVER TIME AND MIGHT NOT BE
100% RELEVANT NOW. CHECK BEFORE USE. VIEWS ARE MY OWN.

3. GARTNER HYPE CYCLE 2016

4. HOW ABOUT SMART HOMES?

5. “Adoption of newer connected home
solutions is still at the early adopter phase,
according to a recent survey by Gartner, Inc.
The survey, of nearly 10,000 online
respondents in the U.S., the U.K. and
Australia during the second half of 2016,
found that only about 10 percent of
households currently have connected home
solutions.”
–Gartner
source http://www.gartner.com/newsroom/id/3629117

6. WHERE WORLD IS GOING

7. Global Google Trends
2011-2017
source https://trends.google.com/trends/explore?
date=2011-06-23%202017-07-23&q=smart%20home

8. WHERE POLAND IS GOING

9. Local Google Trends
2011-2017
source https://trends.google.com/trends/explore?
date=2011-06-23%202017-07-23&geo=PL&q=inteligentny
%20dom

10. SMART HOME, IOT AND
HOME AUTOMATION
IS LIKE TEENAGERS SEX, (GLOBALLY) EVERYONE WANTS IT,
EVERYONE TALKS ABOUT IT, VERY LITTLE ACTUALLY DO IT

11. SO LETS TALK ABOUT IT

12. FOUNDED IN 2010
source openhab.org
story https://www.slideshare.net/egutierrezru/javamagazine20131112-dl

13. FOUNDED IN 2013
source eclipse.org

15. HOME AUTOMATION BUS

16. source https://docs.oracle.com/cd/E17904_01/doc.1111/e15020/
introduction.htm#OSBCA122
Enteprise Service Bus

17. OPENHAB 1.X ARCHITECTURE IS
RELEVANT
AND 2.X USES SAME CONCEPT
WHAT IS DIFFERENT THEN?

18. BINDING INTERNALS

19. NEW THING CONCEPT

20. What is present with OH 1.x
Item Registry
Binding
Provider

21. Remarks
One thing (device) may have multiple channels
Things have a state
Item is linked to an channel
One bridge wires one or more things
Bridge is optional

22. Thing state diagram

23. Main improvements in 2.x
User perspective
Lower entry level
Discovery of things
Developer perspective
Cleaner separation of concerns
A bit more declarative approach (XML definitions)
(Slightly bigger framework complication)

24. BACNET
BUILDING AUTOMATION AND CONTROL NETWORK

25. “BACnet was designed to allow
communication of building automation and
control systems for applications such as
heating, ventilating, and air-conditioning
control (HVAC), lighting control, access
control, and fire detection systems and their
associated equipment. The BACnet protocol
provides mechanisms for computerised
building automation devices to exchange
information, regardless of the particular
building service they perform.”
source https://en.wikipedia.org/wiki/BACnet

26. Remarks
Started in 1987
ANSI standard since 1995
ISO standard since 2003
Most popular in HVAC area
OSI layers
Physical
Data link
network
Application

27. Shortcut Map
source BACnet specification

28. BACnet Application Layer
source https://sunilsavanur.wordpress.com/2012/08/12/

29. BACnet object types
Analog Input/Output/Value
Binary Input/Output/Value
Multi-state Input/Output/Value
Averaging
Command
File
…… 60 standard object types
source http://www.bacnet.org/

30. BACnet services
File Access
Object Access
Read/Write property
Remote device management
Virtual terminal
.. etc
source http://www.bacnet.org/

31. BACnet IP frame
(IP header)
source http://www.bacnet.org/

32. BACnet frame
(Virtual Network)
source http://www.bacnet.org/

33. BACnet IP frame
(Network Protocol)
source http://www.bacnet.org/

34. BACnet APDU types
Unconfirmed PDU
Confirmed PDU
Simple-ACK PDU
Complex-ACK PDU
Segment-ACK PDU
Reject PDU
Error PDU
Abort PDU
source http://www.bacnet.org/

35. DEPLOYMENT

36. THE UNIT

37. Thing
THE UNIT

38. Thing
Bridge THE UNIT

39. Thing
Bridge
extra one wire sensors
THE UNIT

40. Measurements

41. Copy of dashboard data
Preview of copy of this dashboard available online:
https://snapshot.raintank.io/dashboard/snapshot/
NCCJk3J79xsWtaRXlbI8Kj6u2Wnp3fas?
refresh=30s&orgId=2

42. Grafana
Data visualisation tool
Supports multiple data sources
InfluxDB
Graphite
Elasticsearch
Can draw a bar, pie charts as well as expose single
values

43. InfluxDB
Timeseries database
SQL-a-like query language

44. WHAT I DID

45. I GOOGLED FOR JAVA LIB IN
SPRING 2016
C library
Fork of 1st result
Legacy

47. I LOOKED AT MVNREPOSITORY.COM

48. NO EXAMPLES
NO TESTS
NO SUPPORT, POOR DOCUMENTATION

49. WITH PROPER QUERY GOOGLE
GOT IT
With some love I made it deployable

50. BUT IT DIDNT WORK

51. BACNET4J IS/WAS THREAD
SENSITIVE

52. I BOUGHT BAC
SPECIFICATION

53. I BOUGHT BAC
SPECIFICATION

54. I WRAPPED BACNET4J LOGIC
Raw bacnet main() used during tests
https://gist.github.com/splatch/3216feba4bcad3cfd741644552f93870

56. HOW IT WORKS

57. Items (OH 1.x syntax)
Number Air_Flow "Temperatura nawiewu [%.1f] °C" <temperature>
(Ventilation)
{ bacnet="device=2251,type=analogInput,id=0,refreshInterval=10000" }
Number Air_Recirculation "Wymiennik [%.1f]%" <fan> (Ventilation)
{ bacnet="device=2251,type=analogOutput,id=1" }
Number Air_Suply_Fan "Wentylator nawiew. [%.1f]%" <fan> (Ventilation)
{ bacnet="device=2251,type=analogOutput,id=2,refreshInterval=1000" }
Number Air_Exhaust_Fan "Wentylator wywiew. [%.1f]%" <fan>
(Ventilation)
{ bacnet="device=2251,type=analogOutput,id=3,refreshInterval=1000" }

58. Persistence configuration
Strategies {
everyMinute : "0 * * * * ?"
default=everyUpdate, restoreOnStartup
}
Items {
* : strategy = everyUpdate, everyMinute, restoreOnStartup
}

59. Sitemap (basic ui)
Frame label=“Rekuperator" {
Text item=Air_Flow
Setpoint item=Air_Setpoint step=0.2 minValue=15 maxValue=30
Text item=Air_Recirculation icon="bypass"
Selection item=Air_Season icon="sun" mappings=[
"1.0" = "Lato", "2.0" = "Zima", "3.0" = "Auto"]
Text item=Air_Suply_Fan
Text item=Air_Exhaust_Fan
Selection item=Air_Mode mappings=[
"1.0" = "Tryb 1", "2.0" = "Tryb 2", "3.0" = "Tryb 3", "4.0" = "Program"]
}

60. Basic UI on
mobile

61. OH2 discovery result

62. THE END

63. HOW TO FIND ME
Twitter: ldywicki
https://community.openhab.org