LoRa IoT experience sharing

1. IoT with LoRa
experience sharing
Institute of Information Science, Academia Sinica
Network Research Lab
Research assistant
Hu-Cheng, Lee

2. Airbox
Wearable Device
Location Aware Sensor System

3. Airbox
Wearable Device
Location Aware Sensor System

4. IoT with LoRa
Airbox
• Realtime ambient
sensing include -
- Temperature & Humidity
- PM2.5
• Smart & Healthy city
• Environmental education
Let’s hack!

5. IoT with LoRa
Airbox + LoRa
GND
VIN
SDA
ALT
SCL
pin 2
GND
pin 1
5V
pin 4
Rx
pin 5
Tx
Tx
Rx
5v
3v3
SDA
SCL
GND
SHT 31
Temperature & Humidity
PMS 5003
PM2.5
LoRa
p.s Original temperature &
humidity sensor is HTS221

6. IoT with LoRa
About LoRa
• LoRa
- Long rage communication (LoRa)
- Low Power Wide Area Network (LPWAN)
- Low bit rate connected object
- Limited in 11 bytes / min (in this case, Gemtek LoRa module)
• Our data
- Temperature & Humidity
- PM2.5 & PM10
- GPS
- App ID
• Bitwise operation

7. IoT with LoRa
Fit them into 11 bytes
Transmit
attribute
App_ID
(Temperature value +
20) x 10
Humidity
value x 10
PM2.5 PM10 - PM2.5 Lat + 90 Lon + 180 fix/num
Recording
range
0~15 -20 ~ 82.3 0 ~ 102.3 0 ~ 2047 0 ~ 255 -90 ~ 90 -180 ~ 180 0 ~ 14
Transmit
value
0~15 0 ~ 1023 0 ~ 1023 0 ~ 2047 0 ~ 255 D: 0 ~ 180 (8 bits) D: 0 ~ 360 (9 bits) 0 ~ 15
M: 0 ~ 59 (6 bits) M: 0 ~ 59 (6 bits)
S: 0 ~ 59 (6 bits) S: 0 ~ 59 (6 bits)
Bits # 4 bits 10 bits 10 bits 11 bits 8 bits 20 bits 21 bits 4 bits
P.S
PM10 = PM2.5 + (PM10 -
PM2.5)
DMS format DMS format
15: Fake
GPS
App_id Temperature Humidity PM2.5 PM10 offset Latitude Longitude fix #
Bit slot

8. IoT with LoRa
Arduino sample
Open source

9. IoT with LoRa
LoRaBitMap( )
variable preprocess
bitwise operation
AT command, launch your data!

10. IoT with LoRa
Get the data
• Prepare your MQTT info. (ex.)
- "host": "SERVER IP",
- "port": 80,
- "topic": "client/700000000/700000000-GIOT-MAKER",
- "clientId": "700000000-generic-service",
- "username": "700000000",
- "password": “PASSWORD"
• $ mosquitto_sub -h <Server_IP> -p 80 -t client/
700000000/700000000-GIOT-MAKER -I 700000000-generic-
service -u 700000000 -P <PASSWORD>

11. IoT with LoRa
Get the data
RECV:
{
"id" : "e18a47a2-9c3c-4157-b61a-5131e34e6813", // Unique index for this message
"macAddr" : "04000011", // Module ID
"data" : "1459268303", // Your Data
"buff" : "2016-05-09T09:18:56.310Z", // LoRa Gateway receive timestamp
"recv" : "2016-05-09T09:18:55.000Z", // Cloud server receive timestamp
"extra" : { // Lora Gateway which receive your data
"gwip" : "192.168.1.110", // Lora Gateway Wan IP
"gwid" : “00001c497b48db94", // Lora Gateway ID
"repeater" : "00000000ffffffff", // Lora Repeater ID, if bypass
"systype" : 4, // System ID for indicating service area
"rssi" : -94, // RSSI when this frame is into Gateway
"snr" : 93 // SNR when this frame is into Gateway
}

12. IoT with LoRa
Get the data
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Reverse itooxx
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Handle duplicate

13. Airbox
Wearable Device
Location Aware Sensor System

14. IoT with LoRa
Heat-stress sensing
• Personal heat-stress sensing device
• Realtime ambient sensing include
- Temperature & Humidity
- Air pressure
- GPS

15. IoT with LoRa
Heat-stress sensing
GPS
GPS antenna
BME280
Environment Tmp., Hmd. & Prs.
Tmp. - Temperature (℃)
Hmd. - Humidity (RH%)
Prs. - Air pressure (hPa)
2000 mAh
LinkIt ONE
Mainboard
LoRa module
Battery
Data transmission

16. Airbox
Wearable Device
Location Aware Sensor System

17. IoT with LoRa
LASS
We welcome everyone!
We are open-source & open-data!

18. IoT with LoRa
System

19. IoT with LoRa
Stations

20. IoT with LoRa
IDW diagram
http://nrl.iis.sinica.edu.tw/LASS/GIS/IDW/2016/11/4 7-10:00 CST

21. IoT with LoRa
IDW+IDW+IDW+……
• Date
• Dec 21, 17:30~23:30
• Location
• Northern Taiwan
• Rate
• 1 IDW / 5mins

22. IoT with LoRa
Partners

23. IoT with LoRa
LASS WWDC
• Location：NCTU Guangfu Campus
• Date: summer in 2017
• Follow us on Facebook

24. Thank you