10-05-2014, 10:56 AM
NPK DETECTION FROM SOIL
NPK DETECTION.pptx (Size: 564.95 KB / Downloads: 19)
SOLUTION FOR NPK TEST
Test tube + 30 ml distilled water + 2 floc-
ex tablets + dry soil.
2) Cap tube and shake it.
3) Wait for 5 minutes.
NITROGEN (N) DETECTION
NPK solution+ Nitrate WR CTA Tablet
Wait 5 minutes for color ocurrance
Red color form
Compare red color with nitrogen color chart
PHOSPHORUS (P) DETECTION
NPK solution + one Phosphorus Tablet.
Wait 5 minutes for color develop.
forms green color.
Compare green color with nitrogen color chart.
INTRODUCTIO OF NPK DETECCTION
FROM SOIL
In NPK detection kit color sensor TCS 230 is used .
which senses color contents from soil and sends signal
to AVR microcontroller . microcontroller process incoming signal
and display the color contents ratio on display screen .
Also indicates the absent of color contents in soil via relay switch.
from that color contents we can detect the NPK ratio present in soil.
WORKING OF PROJECT
The block diagram of Project has four section namely: sensor, controller, driver and dc motor
The color sensor senses the color.
The controller section processes the signal coming from the sensing section block and operates as per the programming done in controller section.
Three relays are interfaced to microcontroller to indicate the absent of organic material in soil.
The LCD used is 16 X 2 For displaying data. i.e. it displays the detected nutrients from soil.
COLOR SENSOR
TCS230 Color Sensor is a complete color detector, including a TAOS TCS230 RGB sensor chip, white LEDs, collimator lens, and standoffs to set the optimum sensing distance. It plugs directly into the BASIC Stamp-2pe Motherboard and will also interface to any BASIC Stamp module or Propeller board using the optional DB-Expander SIP Converter.
The TCS230-DB can detect and measure a nearly limitless range of visible colors. Applications include test strip reading, sorting by color, ambient light sensing and calibration, and color matching, to name just a few
DC MOTOR
GEAR MOTOR - HELICAL GEAR
10RPM T0 1000RPM 12V DC geared motors for robotics applications
Very easy to use and available in standard size.
Nut and threads on shaft to easily connect Wheel
10RPM 12V DC motors with Gearbox
6mm shaft diameter with internal hole
125gm weight
Same size motor available in various rpm
5kgcm torque
No-load current = 60 mA(Max), Load current = 300 mA(Max)
ADVANTAGES OF DC MOTOR:
– Ease of control
– Deliver high starting torque
– Near-linear performance