VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD

VTT Technical Research Centre of Finland Ltd

Enabling technologies forWireless Sensor Networks

2

VTT Tiny Node V3.0

Application domainsBuilding AutomationWellness and HealthcareIndustrial Automation SystemsSmart Lighting

Miniature euro coin sizeOn-board antennaBluetooth Smart 4.0 radio (short range)Integrated sensors including

Accelerometer, 3DPressure sensorTemperature sensorHumidity sensor

Data-flash memory 64MBitCoin cell battery operatedWaterproof enclosure

302/06/2017 3

TinyNode V4.0 board

Miniature euro coin size (charger cut-off part)On-board antennaBluetooth Smart 4.0 radio (short range)Integrated sensors including

Accelerometer, 3DMagnetometer, 3DInclinometer, 3DAir pressure sensorTemperature sensorHumidity sensor

Data-flash memory 64MBitCoin cell or rechargeable battery operatedNFC wakeup for communication and recharge

402/06/2017 4

FlexNode V1.0

Wireless charging (NFC)On-board antennaBluetooth Smart 4.0 radioIntegrated sensors including

Accelerometer, 3DTemperature sensorHumidity sensor

Perforation for breathabilityData-flash memoryLi-Po battery operatedSize: 90 x 20mm25um flex PCB available

502/06/2017 5

LoRa-Node

Miniature sizeOn-board chip antenna or external antennaLong range, low bandwidth, LoRa 868 / 915 MHz radioIntegrated sensors including

Temperature sensorHumidity sensorAir pressure sensor

Data-flash memory 64MBit (add-on options)Bluetooth Smart 4.0 radio (add-on options)

Hybrid radio systems feasible2.4GHz local sub-network and 868MHz gatewayconnectivity

LoRa

BLE

4G

6

LoRa installation at VTT Office building Oulu

7

Embedded BLE Gateway

BeagleboneCommercially available1GHz ARM Cortex A84GB on-board flashEthernet and WiFi (optional)USB, HDMI,2x46 headers (4xUART)Several add-on boards available

CAN,IO,DisplayBLE 4.0 connectivity with USBLinux Debian

802/06/2017 8

VTT Little Node + Board Extensions

2.4 GHz transceiverGFSK modulation250 kbps, 1 Mbps, 2 Mbps dataratesTX output Power +4dBmBluetooth Smart 4.0 compatibleARM M0 32 bit processor256 kB flash program memory

AD-Board specifications4.8 kHz, Ultra low noise, 24-Bit Sigma-Delta ADC with PGAProgrammable gain 1 to 128Two digital filter options. The choice offilter affects the r.m.s noise/noise-freeresolution at the programmed outputdata rate 4.7 Hz to 4.8 kHz.

Power Board SpecificationsContinuous Energy HarvestingFrom Low voltage Input Sources:VIN 80 mVIntegrated Dynamic MaximumPower Point Tracking for OptimalEnergy Extraction From a Variety ofEnergy Generation sourcesIntegrated Battery manager forstorage elements between 2.2-5.25VSecondary Buck-Boost converter toregulate battery voltage with inputrange:1.8-5.5V and output 2V to 5V.Holder for backup coin-battery incase of harvested power shortage

9

Sensor integration optionsIntegration of commercial available separate digitallyI2C,SPI or UART and analogue interfaced devicesPCB tailoring with add-on sensors feasible

AD-board4.8 kHz, 24-Bit Sigma-Delta ADC with PGAProgrammable gain 1 to 128, Digital filtersIntegration of strain gauge transducers

CO2-sensorDigitally interfaced commercial carbon dioxide-sensor0-2000 ppmLow-noise and low-power

Pressure difference sensorDigital I2C-interfacedHigh accuracyRange +/- 500 Pa

24-bit AD-board for strain gauges

TinyNode + CO2- sensor

TinyNode + Pressure difference + AA enclosureTinyNode + AAA enclosure

1002/06/2017 10

VTT IoT application for gateway based solutions

LoraNode(s) andTinyNode(s)

Gateway for dataRetrieval and sending

Data CloudBackend

Wireless sensor nodes

Pressure, Temperature,Humidity, CO2 (add-on)

Pressure difference (add-on)

Gateway app fordata collection from

sensor nodes

Real-time dataaggregation

Cloud backend fordata storage, computing andvisualization

Data-file download foradvanced analysis

1102/06/2017 11

Intelligent indoor conditions monitoring HW

Temperature (wireless, battery powered)Relative humidity (wireless, battery powered)Air pressure (wireless, battery powered)CO2 (wireless, separate sensor)Pressure difference (wireless, separate sensor)

The sensors can be assembled into a building with agateway unit. The unit will collect and send all data to acloud server which can be proprietary for the clientSensor units uses BLE or LoRa for communication,Gateway is using WLAN or operator based network(LTE) for communication to the cloud servers

1202/06/2017 12

VTT IoT application for mobile based solutions

TinyNode(s) Mobile dataCollection app

Data CloudBackend

Android App fordata collection from

TinyNode(s)

Real-time orlogging data

collection

Cloud backend fordata storage and basicvisualization

Data-file download foradvanced analysis

Wireless sensor nodes

Temperature, PressureHumidity, CO2 (add-on)

Pressure difference (add-on)

Bluetooth LE 4.0

1302/06/2017 13

Additional information

VTT Technical Research Centre of Finland Ltd

Kalle MäättäSenior ScientistIndustrial IoTKalle.Maatta@vtt.fi+358 40 515 9704

Jari RehuSenior Research EngineerIndustrial IoTjari.rehu@vtt.fi+358 40 553 4159

Esa ViljamaaIndustrial IoTTeam LeadEsa.Viljamaa@vtt.fi+358 400 911 201

TECHNOLOGY FOR BUSINESS