23-06-2012, 01:40 PM
WIRELESS DESIGN OF LOW COST IRRIGATION SYSTEM USING GSM TECHNOLOGY
[attachment=25241]
Introduction:
The basic aim in this technology is to check the soil moisture in four sectors of Area and control the water pumps respective to that sector.
Description:
This technology involves monitoring soil moisture of a remote area divided into four sectors, where each sector of land consists a water pump and continuously monitoring the conditions such as wet, dry, fully filled in that particular sector.
In this the soil moisture sensors are interfaced with a micro controller (AT89S52). GSM module is interfaced to the microcontroller and soil moisture sensors are kept at different remote areas from where the corresponding conditions such as dry, wet and fully filled is monitored. When farmer gives missed call, the soil moisture measured in four sectors information is transmitted through the GSM modem interfaced with the micro controller to the Farmer from the remote area.
Global System for Mobile Communication (GSM):
Definition:
Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz It is estimated that many countries outside of Europe will join the GSM partnership.
DC MOTOR:
DC motors are configured in many types and sizes, including brush less, servo, and gear motor types. A motor consists of a rotor and a permanent magnetic field stator. The magnetic field is maintained using either permanent magnets or electromagnetic windings. DC motors are most commonly used in variable speed and torque.
Motion and controls cover a wide range of components that in some way are used to generate and/or control motion. Areas within this category include bearings and bushings, clutches and brakes, controls and drives, drive components, encoders and resolves, Integrated motion control, limit switches, linear actuators, linear and rotary motion components, linear position sensing, motors (both AC and DC motors), orientation position sensing, pneumatics and pneumatic components, positioning stages, slides and guides, power transmission (mechanical), seals, slip rings, solenoids, springs.
RELAY
A relay is an electrically operated switch. Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts. The coil current can be ON or OFF so relays have two switch position and they are double throw (changeover) switches.
Relays allow one circuit to switch a second circuit which can be completely separate from the first. For example a low voltage battery circuit can use a relay to switch a 230V AC mains circuit. There is no electrical connection inside the relay between the two circuits; the link is magnetic and mechanical.
[attachment=25241]
Introduction:
The basic aim in this technology is to check the soil moisture in four sectors of Area and control the water pumps respective to that sector.
Description:
This technology involves monitoring soil moisture of a remote area divided into four sectors, where each sector of land consists a water pump and continuously monitoring the conditions such as wet, dry, fully filled in that particular sector.
In this the soil moisture sensors are interfaced with a micro controller (AT89S52). GSM module is interfaced to the microcontroller and soil moisture sensors are kept at different remote areas from where the corresponding conditions such as dry, wet and fully filled is monitored. When farmer gives missed call, the soil moisture measured in four sectors information is transmitted through the GSM modem interfaced with the micro controller to the Farmer from the remote area.
Global System for Mobile Communication (GSM):
Definition:
Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz It is estimated that many countries outside of Europe will join the GSM partnership.
DC MOTOR:
DC motors are configured in many types and sizes, including brush less, servo, and gear motor types. A motor consists of a rotor and a permanent magnetic field stator. The magnetic field is maintained using either permanent magnets or electromagnetic windings. DC motors are most commonly used in variable speed and torque.
Motion and controls cover a wide range of components that in some way are used to generate and/or control motion. Areas within this category include bearings and bushings, clutches and brakes, controls and drives, drive components, encoders and resolves, Integrated motion control, limit switches, linear actuators, linear and rotary motion components, linear position sensing, motors (both AC and DC motors), orientation position sensing, pneumatics and pneumatic components, positioning stages, slides and guides, power transmission (mechanical), seals, slip rings, solenoids, springs.
RELAY
A relay is an electrically operated switch. Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts. The coil current can be ON or OFF so relays have two switch position and they are double throw (changeover) switches.
Relays allow one circuit to switch a second circuit which can be completely separate from the first. For example a low voltage battery circuit can use a relay to switch a 230V AC mains circuit. There is no electrical connection inside the relay between the two circuits; the link is magnetic and mechanical.