Wireless Sensor Network Pessl Instruments GmbH Created by Jan Krchnak “TURNING INFORMATION INTO PROFITS“ “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

License-Free Frequency Bands The global used 2.4 GHz ISM band Sub-1GHz ISM bands – Europe: 868 MHz (called as SRD band) – USA, Canada, Australia, Israel: 915MHz – Asia, Europe: 433 MHz Application – Home and building automation, wireless alarm and security systems, industrial monitoring and control, wireless sensor network, wireless healthcare applications, traffic controls,... “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

ISM Bands of The World – Rough Overview “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

868/915 MHz ISM/SRD Bands – Better range – Less crowded – Low cost – Lower power consumption SimpliciTI protocol – Free protocol from Texas Instruments – Suitable for wireless sensing applications – Standard topology (star): Gateway Sensor Valve Sensor Alarm Repeater Sensor “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

Wireless Sensor Network by Pessl Instruments RF CC1120 low power module with SimpliciTI protocol from TI – channel spacing down to 12.5kHz – 170/ 315/ 433 / 868 /915 / 950 MHz ISM/SRD bands – Configurable data rates to 200kbps – Low current consumption of TX 45mA at +14 dBm – Excellent receiver sensitivity to -123 dBm at 1200bps – Supported modulation formats: 2-FSK, 2-GFSK, 4-FSK, 4-GFSK, MSK, OOK ISM/SRD frequency bands: – 868 MHz ( MHz), 4800bps Baud rate, Channel spacing 100 kHz (max. 20 channels) – 915 MHz ( MHz), 4800bps Baud rate, Channel spacing 200 kHz (max. 130 channels) Max. power transmission +14dBm (25mW) Star topology “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

Device Types in WSN RF Access Point RF Sensor Device “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Access Point Connection with iMetos through extension connector Powered by Battery from iMetos Independent self-system unit Pushbutton – device pairing activation, resetting External antenna 1 RF Access Point in whole wireless sensor network RF CC1120 module from TI SimpliciTI protocol “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Access Point – PCB View Top viewBottom view External antenna connector Extension connector to iMetos RF CC1120 module uPC Pushbutton “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Access Point - Application RF Sensor Device 1RF Sensor Device xRF Sensor Device 2 Used RF CC1120 module Tx power: +14dBm (25mW) Rx sensitivity: -114dBm at 4.8 kbps Range over ~1000 meter “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Sensor Device Powered by 3.6 V Lithium Battery (8500mAh) Pushbutton – pairing device activation, resetting Built-in PCB Antenna (Meandering monopole antenna) 36 pcs. of RF Sensor Devices in whole WSN (Start topology) Sensors: 2x Temperature sensors (Air/Soil), Hygroclip2 (Temperature & Humidity sensor), 2x Watermark, 2x Decagon sensors (EC-5, 10HS, MPS-2, 5TE, 5TM, GS3, LW), Rain gage or Reed relay sensor, Leaf wetness sensor. RF CC1120 module from TI SimpliciTI protocol “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Sensor Device – Sensors - Air temperature - Rain gauge (or other reed relay) - Leaf wetness - Hygroclip2 - Watermark - Soil temperature - Decagon EC-5 - Decagon 10HS - Decagon MPS-2 - Decagon 5TM - Decagon 5TE - Decagon GS3 or “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

RF Sensor Device – PCB View Top viewBottom view uPC PCB Antenna 2x Temperature Leaf Wetness Hygroclip2 2x Decagon 2x Watermark PC Terminal Rain gage / Reed relay Ext. Pushbutton & LED 3.6V Battery RF CC1120 Module “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

Wireless Sensor Network - Topology RF SD 1 RF AP * RF AP - RF Access Point * RF SD - RF Sensor Device RF SD 2 RF SD 4RF SD 3 RF SD 5 “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 1. RF Access Point installation iMetos + RF Access Point “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 2. RF Sensor Device installation iMetos + RF Access Point 1. RF Sensor Device 2. RF Sensor Device “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 2. RF Sensor Device installation RF Sensor Device DIP Switches setting Decagon sensors: –EC-5, 10HS, 5TE, 5TM, MPS-2, GS3, Leaf Wetness –Type of soil media (calibration) Rain gauge or reed relay sensor Other DIP combinations – reserved for future use “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 3. RF Devices pairing (link establishment) iMetos + RF Access Point 1. RF Sensor Device 2. RF Sensor Device FIELDCLIMATE List of MAC Addresses of the SDs TERMINAL “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 3. RF Devices pairing (link establishment) iMetos + RF Access Point 1. RF Sensor Device 2. RF Sensor Device “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

WSN - Installation 4. Data on fieldclimate web Values of all measured sensors MAC address of the sensor device Battery voltage level (3.6 V) Received signal strength indication (RSSI): –more than -25dBm – overload –-26 to -35dBm – excessive –-36 to -45dBm – excellent –-46 to -75dBm – good –-76 to -95dBm – weak –-96 to -105dBm – poor –less than -106dBm – very poor “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

5 minutes measuring interval (default) RTC synchronization – battery saving Long-term pairing – long time for RF sensor devices installation Automatic rebuild the synchronization in case of the communication fails RF Sensor Device reset RF Access Point reset – whole network resetting Other features “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

Frequency band 868/915 MHz, baud rate 4800bps, 5 min. measuring interval Data transmission by node:- average current: 23 mA - average duration: 1200 ms - average power consumption: mAh RF Access Point - Power Consumption “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013 Nm. of nodes (max.) per 5 min mAh0.091 mAh0.181 mAh0.272 mAh per 1 hour 0.73 mAh1.09 mAh2.17 mAh3.26 mAh per 1 day mAh26.21 mAh52.13 mAh78.34 mAh Battery (Panasonic) 6V, 4.5Ah ( 1 – 8 nodes) 6V, 12Ah ( 9 – 36 nodes)

Frequency band 868/915 MHz, baud rate 4800bps, 5 min. measuring interval Data transmission + synchronization:- average current: 21.8 mA - average duration: 1500 ms - average power consumption: mAh Sensor measurement:- average current: 12 mA - average duration: 3000 ms - average power consumption: 0.01 mAh Power consumption of the board: mAh per 5 min. measuring interval mAh per hour mAh per day 3.6 V Lithium Battery (8500mAh):- Lifetime over 4 years 3.6 V Lithium Battery (19000mAh):- Lifetime years RF Sensor Device - Power Consumption “CONTINUING THE GROWTH PATH“ 10th Distributor Conference 17 th to 20 th of November 2013

Thank you for your attention.