LoRa

LoRa je bežična tehnologija za komunikaciju na velikim udaljenostima te ujedno i jedna od najraširenijih

LPWAN tehnologija u svijetu.

LoRa radi odlično u "bučnom" okruženju

Velik domet
Mala potrošnja

Mala snaga slanja (25mW)
Potrošnja (40mA TX, 10mA RX)
U sleep modu, potrošnja manja od 1uA

Glavne prednosti LoRe

Slanje male količine podataka

Vremenski limit po uređaju (AirTime)

Glavni nedostaci LoRe

Nod (ili gw sa jednim kanalom)

Semtech SX čipovi za različite frekvencije
EU 868MHz Band SX1276(433Mhz SX1278)

Gateway SX1301/SX1308 for gateway

Prima 8 kanala u isto vrijeme
Bolje osjetljivosti nego NOD čipovi

SX1301 -40*C - odlična osjetljivost

SX1308 0*C - manje dobar prijem

Svi čipovi su kontrolirani SPI protokolom

LoRaWAN

LoRaWAN je (MAC) protokol za WAN (wide area networks).

https://stackforce.github.io/LoRaMac-doc/group___l_o_r_a_m_a_c.html

868MHz Airtime limiti

Za 868MHz nije potrebna licenca :)

125kHz bandwidth

LoRa nije za prijenos velike količine podataka

Think a byte, not Kilobyte!

LoRa moduli

RN2483 - Serial - PIC + Semtech
CMWX1ZZABZ - STM32L0 + Semtech

STM32WL - STM32L4 + Semtech

Nordic + Semtech (BLE konfiguriranje, fw upload)

LoRa GW

Rak wireless DIY gateway ( $200 )
   Rak wireless indor GW ( $149 )
   Rak wireless outdor GW ( $599 )
   TTN gateway indor ( $69 )
   MikroTik LoRaWAN Gateway outdor ( $200 )
   MultiTech ($500)
   Kerlink unutarnji (from €275)

Kerlink vanjski Wirnet iBTS ( €1645 )
Lacuna - satelit
OiV - mreža cijela Hrvatska

Sigfox hrvatska
Radiona - SMART ZG TTN

LoRa - čip jedan da zavlada svima

LR1110 - 150MHz do 2700MHz

Kučište

Vodootpornost ako je potrebna

Temperatura (zima - ljeto)

Trajnost baterije

UNI-TREND UT61E Digital Multimeter(50-100€)
OTTI(500€)
Joulescope(800$)

Mjerenje potrošnje

LoRa gateway by: Prizma

Pokrivenost ZG

LoRa rekordi

Zagreb - Karlovac - 54.5km - SF8

Zagreb - Maribor - 74.2km - SF12

Use cases

- IRNAS has few great ones
- Count penguins
- power on - take pic - OpenCV count penguins - lora send no of penguins - power off
- Pit stop for turtles
- Trap for poachers
- Smart birdhouse
- Intrudes alarm in distant house - or boat...
- Public scale
- Pager
- GPS for pets
- Polution detector
- If something bad detected send a warning
- Agriculture
- Distant plant soil moisture

So many other

Šumovi šume – LoraWan tehnologija

Kako i što pratiti na vodama?

Senzor temperature

Razina vode - plovak

Developed in the early 1900s and modified many times prior to 1930.
Purchased from the W. & L. E. Gurley Company, Troy, New York.
Object ID: USGS-000458

Credit: Justin Bongard, U.S. Geological Survey. Public domain.

Protok vode

U.S. Geological Survey hydrologic technicians use an acoustic Doppler current profiler to measure streamflow on the Boise River in Boise's Veterans Memorial Park as part of a study of phosphorus mass balance.

Credit: Tim Merrick, USGS. Public domain