IoT with LoRa experience sharing Institute of Information Science, Academia SinicaNetwork Research Lab

Research assistantHu-Cheng, Lee

Airbox

Wearable Device

Location Aware Sensor System

Airbox

Wearable Device

Location Aware Sensor System

IoT with LoRa

Airbox• Realtime ambient

sensing include -

- Temperature & Humidity

- PM2.5

• Smart & Healthy city

• Environmental educationLet’s hack!

IoT with LoRa

Airbox + LoRa

GNDVINSDA

ALT SCL

pin 2 GND

pin 1 5V

pin 4 Rx

pin 5 TxTx

Rx

5v3v3SDASCLGND

SHT 31Temperature & Humidity

PMS 5003PM2.5

LoRap.s Original temperature & humidity sensor is HTS221

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

IoT with LoRa

Fit them into 11 bytesTransmit attribute App_ID (Temperature value +

20) x 10Humidity 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

IoT with LoRa

Arduino sample

Open source

IoT with LoRa

LoRaBitMap( )

variable preprocess

bitwise operation

AT command, launch your data!

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>

IoT with LoRa

Get the dataRECV:

{

"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

}

IoT with LoRa

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Handle duplicate

Airbox

Wearable Device

Location Aware Sensor System

IoT with LoRa

Heat-stress sensing

• Personal heat-stress sensing device

• Realtime ambient sensing include

- Temperature & Humidity

- Air pressure

- GPS

IoT with LoRa

Heat-stress sensing

GPSGPS antenna

BME280Environment Tmp., Hmd. & Prs.

Tmp. - Temperature (℃) Hmd. - Humidity (RH%) Prs. - Air pressure (hPa)

2000 mAh

LinkIt ONEMainboard

LoRa module

BatteryData transmission

Airbox

Wearable Device

Location Aware Sensor System

IoT with LoRa

LASS

We welcome everyone!We are open-source & open-data!

IoT with LoRa

System

IoT with LoRa

Stations

IoT with LoRa

IDW diagram

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

IoT with LoRa

IDW+IDW+IDW+……• Date

• Dec 21, 17:30~23:30

• Location

• Northern Taiwan

• Rate

• 1 IDW / 5mins

IoT with LoRa

Partners

IoT with LoRa

LASS WWDC• Location：NCTU Guangfu Campus

• Date: summer in 2017

• Follow us on Facebook

Thank you