Collect & Display Data 網路 via Wired LAN via Wireless LAN via Telephone line via Mobile communication GPRS/GSM 資料收集到 DB PHP, Java, etc. DBMS Report VB, VC, BCB, etc. Report & Control DB 資料顯示 Table, Chart, Picture for current / max / min / avg, etc. Table, Chart, Picture for History data.
Base Monitoring Unit Receives the transmitted data from the wireless remote sensing units, displays the current values, and alarm status. Pre-defined high or low temperature conditions trigger the red alarm indicators and the alarm sounds to notify you of the situation in real-time.
Wireless Remote Sensing Unit Measures the temperature and humidity value and transmits the data wirelessly to the local monitoring unit. It transmits the data over 400MHz radio frequency band and operates with 2Pcs AA batteries (included), which can be installed and replaced very easily by the end user. Battery life is 6 months. Remote units require a radiation shield.
Radiation Shield Protect your sensor from rain, solar radiation, or other sources of heat that can distort measurements.
Spec Log ® Crop Monitor Software Log weather data on your PC and produce the reports you need to manage plant growth. Reports include: T/RH Hours, DIF Temperature, Degree-Days, Daily and Monthly Summaries.
Weather station ET (Penman) Radiation Wind Rain T & H Soil temp Leaf wetness Enable use of the actual/historical data to plan irrigation strategy for future situations
Field station transmitter Reliable and simple Built-in battery for 5 year No external antenna Range – max :1-4 km Frequency: 150 – 600 MHz Built-in interface for: Three Tensiometers Three TDT Soil moisture Water meter / tipping bucket Weather station Other digital or analog inputs 150~600 MHz
Principles of Operation Data is sampled every 15 minutes and transmitted every 30 minutes to the base station. Wireless data transfer from the sensors to the collector or a PC Downloading the data from the collector or the PC via telephone line or cellular Data processing and presentation for decision-making in real time Data collecting for historical analyses and research
Wireless data transfer Sending range: Up to 1– 4 km Field Station Field Collector Telephone line Cellular
Extending the Transmitting Range via the Repeater Range: Up to 7– 10 km Repeater range 1- 4 km
Remote accesses to data Loc al PC Field Collector Telephone line Cellular
Spectrum Technology, Inc. Designed specifically for WatchDog stations, the low- power Spread Spectrum radio technology does not require an FCC license. You benefit by locating your station in an optimum microclimate to capture valuable weather data. System includes four AA rechargeable batteries (replaces the station's alkaline batteries), base station transceiver/antenna with power adapter, transceiver/antenna with solar power for the WatchDog station, and mounting hardware. 900 MHz
WatchDog Stations Model 900ET Evapotranspiration (ET), solar radiation, wind speed/direction, wind chill, dew point, temperature, RH and rainfall. Three (3) available external sensor channels for leaf wetness, soil moisture or other sensors. Model 800 Station This 8-channel data logging station is used for: Soil moisture measurement, Multiple sensor measurements, Microclimate and field research. Model 700 Weather Station Wind speed/direction, temperature, RH and rainfall. Has four (4) available external sensor channels for soil moisture, soil temperature or leaf wetness sensors Model 600 Weather Station Wind speed/direction, temperature, and rainfall. Has four (4) available external sensor channels for soil moisture, soil temperature or leaf wetness sensors Model 550 Weather Station Portable Station Lets You Document Real-Time Weather Conditions At Any Site. Includes wind speed/direction, temperature and RH. Model 525 Weather Station Portable Station Lets You Document Real-Time Weather Conditions At Any Site. Includes wind speed/direction and temperature.
Campbell Scientific, Inc. The CR205 Datalogger includes an on- board 915 MHz spread spectrum radio. The CR205's input channel configuration and small size is optimal for measuring one or two sensors. The CR215 Datalogger includes an on- board 2.4 GHz spread spectrum radio. The RF401 Spread Spectrum Radio has a 910 to 918 MHz operating frequency range, which is allocated to the US and Canada. The RF411 spread spectrum transceiver has an operating frequency range of 920 to 928 MHz, which is allocated to Australia/Israel.
Comparison between wireless LAN & PAN Feature WiFi (IEEE 802.11b) Bluetooth (IEEE 802.15.1) ZigBee (IEEE 802.15.4) Radio DSSS 1 FHSS 2 DSSS Data rate 11 Mbps1 Mbps250 kbps Nodes per master 32764,000 Slave enumeration latency Up to 3 secUp to 10 sec30 ms Data typeVideo, audio, graphics, pictures, files Audio, graphics, pictures, files Small data packet Range 100 m10 m70 m ExtendabilityRoaming possibleNoYes Battery lifeHours1 week1 year+ Bill of material$9$6$3 ComplexityComplexVery complexSimple 1 DSSS: Direct –sequence spread spectrum FHSS: Frequency-hopping spread spectrum
Bluetooth 30 days (park mode @ 1.28s) 802.15.4/ZigBee more battery-effective at all beacon intervals greater than 0.246s At beacon interval ~1s, 15.4/ZigBee battery life 85 days 802.15.4/ZigBee vs Bluetooth
Wireless PAN 802.15.1 Bluetooth 2.4 GHz, 915 MHz, 868 MHz 1 Mbps
“the software” Network, Security & Application layers Brand management IEEE 802.15.4 “the hardware” Physical & Media Access Control layers PHY 868MHz / 915MHz / 2.4GHz MAC Network Star / Mesh / Cluster-Tree Security 32- / 64- / 128-bit encryption Application API ZigBee Alliance IEEE 802.15.4 Customer Silicon Stack App IEEE 802.15.4 & ZigBee In Context
What is ZigBee? “ Internet Everything ” Your toaster gets an IP address Wireless standard formed by an alliance of industry leaders Motorola, Phillips, Samsung, Cisco … over 100 companies!!
Applications ZigBee Wireless Control that Simply Works RESIDENTIAL/ LIGHT COMMERCIAL CONTROL CONSUMER ELECTRONICS TV VCR DVD/CD remote security HVAC lighting control access control lawn & garden irrigation PC & PERIPHERALS INDUSTRIAL CONTROL asset mgt process control environmental energy mgt PERSONAL HEALTH CARE BUILDING AUTOMATION security HVAC AMR lighting control access control mouse keyboard joystick patient monitoring fitness monitoring
Revolution in Computer, Communication and MEMS 0.5 oz, 2.25 x 1.25 x 0.25 inch 25 lb, 19.5 x 5.5 x 16 inch ~14 mW~ 64 W ~ $35~ $6K (today) 512 KB Flash160 KB Floppies 128 KB RAM16-256 KB RAM 4 MHz4.77 MHz MICAZ Mote (2005)Original IBM PC (1981)
Features of Intel ’ s Imote ARM* core SRAM FLASH BT radio Stackable connectors (top and bottom) 2.4 GHz antenna Multicolor status LED Optional external antenna connector Optional voltage regulator (bottom)
Imote 2 --Top View Basic I/O connector Dialog PMIC 36 mm 48 mm PXA273 LED Crystals
Imote 2 -- Bottom View 36 mm 48 mm Advanced I/O connector Advanced I/O connector Crystal Antenna Optional SMA connector Mini USB Connector CC2420
Bandwave Technology, Inc. Taiwan Import 802.15.4 4 Sensors on a chip T: Temperature (dry bulb) (-40~120 o C) RH: Relative Humidity (0~99%) TSR: Total Solar Radiation PAR: Photosynthetically Active Radiation
Real-time data Database Live Camera Monitoring results created by Agent System
Sample XML file and agent action XML configuration file get raw data exchange data zoom & snapshot Agent Program
Data Collecting Method PC-Cluster Data gathering agent （ Web crawler ） Internet ADSL CATV Mobile Global IP Private IP FSG Firewall Private network of FieldServers Provider VPN FSG: Field Server Gateway
Field Server of Japan http://model.job.affrc.go.jp/FieldServer/default.htm http://yummy.narc.affrc.go.jp/FieldServer/monitor/ Monitoring page Main page
Sensors: T & RH from Sensirion AG The temperature sensor and the humidity sensor together form a single unit. This also enables an accurate and point- precise determination of the dew point, without incurring errors due to temperature gradients between the humidity and the temperature sensors. Through the unique linkage of these sensor elements with the signal amplifier unit, the analog-to-digital converter, the calibration data memory, as well as the digital, bus-ready interface, all on a surface area of a few square millimeters.
Sensors: soil related Air or Soil Temperature sensor
Sensors: Soil related Easy to install Easy to understand (centibar) Measures small soil samples Requires continuous maintenance Tensiometer 張力計
Soil moisture sensor Volumetric water content Fast responds Robust & Reliable Maintenance free Measuring large soil volume Can be operated in all crops
Soil moisture sensor The Echo probe measures the dielectric constant of the soil in order to find its volumetric water content. Since the dielectric constant of water is much higher than that of air or soil minerals, the dielectric constant of the soil is a sensitive measure of water content. The ECHO probe has a very low power requirement and high resolution. This gives you the ability to make as many measurements as you want (even hourly) over a long period of time (like a growing season, for example), with minimal battery usage. http://www.decagon.com/echo/
ECHO Probes: Models and Specifications ECHO probe model EC-20 (20cm length) ECHO probe model EC-10 (10cm length
Dielectric Leaf wetness sensor The Dielectric Leaf Wetness Sensor, like its name implies, measures surface wetness by measuring changes in the dielectric on the sensor surface. Designed to mimic the thermodynamic properties of a leaf in shape and dimensions. Specifications are in development by Decagon Device, Inc.