Report;Telos B

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APPLICATION OF WSN IN PRECISION FARMING

In the Precision Agriculture various techniques are available to monitor and control therequired environmental parameters for the particular crop. It is particularly crucial to analyse the

methods which can effectively manage the proper environment.

The most important factors for the quality and productivity of plant growth are temperature,humidity, light, level of the carbon dioxide , soil moisture (Soil water potential).Continuousmonitoring of these environmental variables gives information to the grower to better

understand, how each factor affects growth and how to manage maximal crop productiveness.

The optimal greenhouse climate adjustment can enable us to improve productivity and to achieveremarkable energy savings.

Wireless communication can be used to collect the measurements and to communicate

between the centralized control and the actuators located to the different parts of the greenhouse.

In advanced WSN solutions, some parts of the control system itself can also be implemented in adistributed manner to the network such that local control loops can be formed. Compared to the

cabled systems, the installation of WSN is fast, cheap and easy. Moreover, it is easy to relocate

the measurement points when needed by just moving sensor nodes from one location to anotherwithin a communication range of the coordinator device.

To acquire the data, WSN is the best since the climatic conditions inside the polyhouse has to

analyzed for months, continuously for 24hrs.Therefore a compact data acquisition system should

be employed.the hot and humid condition inside the polyhouse is not suitable for human health.

After going through the many papers, we could find that Prof T V Prabhakar, CEDT, IISc

Banglore, did same kind of work. He suggested us to go for TelosB motes.

Ref:

wireless sensor networks for marginal farming in india - COMMON ...

commonsense.epfl.ch/Resources/thesis.pdf

Telos B: Product Description

Crossbows TelosB mote (TPR2400) is an open source platform designed to enable cutting-

edge experimentation for the research community. The TPR2400 bundles all the essentials for

lab studies into a single platform including: USB programming capability, an IEEE 802.15.4radio with integrated antenna, a low-power MCU with extended memory and an optional sensor

suite (TPR2420). TPR2400 is powered by two AA

batteries. If the TPR2400 is plugged into the USB port for programming or communication,

power is providedfrom the host computer. If the TPR2400 is always attached to the USB port no battery pack is

needed.

TPR2400 provides users with the capability to interface with additional devices. The two

expansion connectors and onboard jumpers may be configured to control analog sensors, digitalperipherals and LCD displays. Telos B mote can be used as a USB device and programme it.

Telos B mote 2400CA: Without sensors suite, has port for 8 analog and 1 digital sensors.

Cost: Rs. 11,970/-
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Telos B mote 2420CA : With sensor Suite, has port for 8 analog and 1 digital sensor

Cost: Rs. 16,840/-

Sensors included in the sensor suite are Humidity sensor (SHT11), Visiblelight sensor (Hamamatsu S1087), Temperature sensor (SHT11)

Waspmote Agriculturall Board

Waspmote is a sensor device specially oriented to developers. It works with differentprotocols (ZigBee, Bluetooth, GPRS) and frequencies (2.4GHz, 868MHz, 900MHz) being

capable of getting links up to 12km. It counts with an hibernate mode of 0.7uA which

allows to save battery when it is not transmitting. More than 50 sensors already available

and a complete open source IDE (API libraries + compiler) made really easy to startworking with the platform.

The new Waspmote Plug & Sense! line allows developers to forget about electronics and

focus on services and applications. Now you can deploy wireless sensor networks in a easyand scalable way ensuring minimum maintenance costs. The new platform consists of a

robust waterproof enclosure with specific external sockets to connect the sensors, the

solar panel, the antenna and even the USB cable in order to reprogram the node. It has

been specially designed to be scalable, easy to deploy and maintain.

Cost:1) Waspmote 802.15.4 PRO Rs 10920/- ( 156 )

2)Agriculture Sensor Board Rs 15750/- ( 225 )

3) Sensors RS 40810/- ( 583 )

Sensors include (Air Pressure Sensor, Water soil moisture sensor,Humidity Sensor, Solar

Radiation Sensorm\, Weather meter probe, Leaf Wetness sensor,platinum Thermal Resistance

Sensor)

We have to ship it from, Spain.

Ref:

www.libelium.com/.../waspmote/agriculture-sensor-board_eng...

Conclusion:

We have chosen Telos B mote 2400CA (4 no) and programming it using CONTIKI OS,

though Tiny OS is preferable, it is bit complicated to use at this stage.The number of Telos B

motes required will depend on the size of green house and the node topology we chose. We haveenlisted the sensors and got quotation from different dealers, later we will going to integrate the

sensors on the telosB mote.
http://www.libelium.com/.../waspmote/agriculture-sensor-board_enghttp://www.libelium.com/.../waspmote/agriculture-sensor-board_enghttp://www.libelium.com/.../waspmote/agriculture-sensor-board_eng


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Referenes;

1) APPLICATION OF WIRELESS SENSOR NETWORKSFOR GREENHOUSE PARAMETER CONTROL IN

PRECISION AGRICULTURE; D.D.Chaudhary1, S.P.Nayse2, L.M.Waghmare3

International Journal of Wireless & Mobile Networks (IJWMN) Vol. 3, No. 1, February 2011DOI : 10.5121/ijwmn.2011.3113 140

2) A Smart System for Garden Watering using WirelessSensor Networks; Georgios Constantinos, Constantinos Marios, Sotiris Nikoletseas

3)Greenhouse Monitoring with Wireless Sensor Network; Teemu Ahonen, Reino Virrankoski

and Mohammed Elmusrati,University of Vaasa ,Department of Computer Science

4) A novel methodology for the monitoring of the agricultural production

process based on wireless sensor networks;Soledad Escolar Daz, Jess Carretero Prez,

Alejandro Caldern Mateos

5)TelosB Datasheet

Documents

Report;Telos B