28-12-2012, 02:17 PM
Missed Call Based Switch
Missed Call Based Switch.docx (Size: 1.4 MB / Downloads: 132)
INTRODUCTION
Missed call based Mobile Starter Controller is a device to control and monitor electric devices, agriculture pump sets through mobile phone using GSM technology. This is a GSM powered remote controller to switch ON and OFF electric devices from remote location. With the help of this GSM ON OFF Controller, User can switch ON/OFF and monitor: Electric motors in cement factories, tannery, textile, foundries and all type of industries
1. Agriculture pump sets
2. Air conditioner
3. Fridge
4. Solar Fence energizer
5. Television and all other electrical appliances.
This wireless GSM remote controller helps the farmer to handle agricultural pump sets easily. It also helps the farmer to irrigate the crops in proper schedule. Farmer can set the total running time of pump set to be run. This "GSM PUMP SET CONTROLLER" is a boon to agriculturists. It helps the Indian farmers to save life from snake bite in night time, saves water, time and electricity. Cell phone motor starter is a must device for farmers in today’s world. This mobile starter protects the motor from low voltage. Wireless Remote controller for Pump set is an add-on device to be fixed up with the button starter to control and monitor motor, pump set from remote location. This device is working with the help of GSM network support. Client can use Vodafone, Aircel, Airtel, BSNL Pre-paid SIM cards.
Features
1. Switch ON/OFF pump set through "MISSED CALL"
2. Flexible wiring set with plug and play connectors
3. Suitable for 1/2HP to 500HP electric motors(1Phase)
4. Control through any mobile phone
5. Multi-language SMS support
6. Suitable for all type of button starters
Application:-
1. Agriculture - Irrigation
2. Shopping Malls
3. Multi-storey apartments
4. Factories
5. Institution - School/College
6. Textile Mills
7. Foundries
1.3 Pin connections-
About D-type flip-flops
A D-type flip-flop, also called a D-type bitable, is a subsystem with two stable states. Using appropriate input signals, you can trigger the flip-flop from one state to the other. The diagram below shows the input and output connections of a single D-type bitable:
CIRCUIT DESCRIPTION:-
The 38kHz infrared rays generated by the remote control are received by IR receiver module TSOP1738 of the circuit. Pin 1 of TSOP1738 is connected to ground, pin 2 is connected to the power supply through R5 and the output is taken from pin 3.The output signal is amplified by Q1. The amplified signal is fed to clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded, pin 16 is connected to vcc and pin 3 is connected to D2 (Red LED), which glows to indicate that the appliance is ‘off.’ The output of IC1 is taken from its pin 2. D3 connected to pin 2 is used to indicate the ‘on’ state of the appliance. Q2 connected to pin 2 of IC1 drives relay RL1.
D1 acts as a freewheeling diode. The appliance to be controlled is connected between the pole of the relay and neutral terminal of mains. It gets connected to live terminal of AC mains via normally opened (N/O) contact when the relay energizes.
If you want to operate a DC 12 volt relay then use a regulated DC 12 volt power supply for DC 12 volt Relay and remember that the circuit voltage not be exceeded more than DC 5 volts.
WORKING:-
Mobile missed call based relay Controller is a device to control any electrical device from remote location using mobile phone. This cell phone motor starter helps people to control their appliances remotely. It saves manpower, electricity and time. We have putted mobile at vibration mode so whenever we give missed call vibration motor starts.
Missed call based switch is very useful where long range remote operation is needed, just assemble this kit and connect it any with old obsolete mobile phone (connection diagram will be provided). Relay use in kit can be used to switch any ac/dc load relay status will toggle with every missed call In the present invention a miss-call based switching system for multiple loads or appliances is developed. With this system, a user can control or switch a particular home, office or industrial appliance or system, simply by making miss-calls, from any part of the world. Only after the verification of the callers identity, the incoming signal of miss-call activates the controller circuit at the receiving end. Thereafter, it controls the required function or action of a particular appliance or system. Thus, the operating cost of the proposed miss-call based switching system is negligible which controls several appliances or systems simultaneously and the whole
operating system is highly reliable being not accessible from unauthorized callers/ persons. .
GLOBAL SYSTEM FOR MOBILE COMMUNICATION
It is a globally accepted standard for digital cellular communication. GSM is the name of 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 900MHZ. Throughout the evolution of cellular telecommunications, various systems have been developed without the benefit of standardized specification. This presented many problems directly related to compatibility, especially with the development of digital radio technology. The GSM standard is intended to address these problems.
TRANSFORMER
A transformer is a device that transfer electrical energy from one Circuit to another through inductive coupled conductors the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induced a varying electromotive (emf) or voltage the secondary winding. This effect is called inductive coupled. If a load is connected to the secondary, current will flow in the secondary winding, and electrical energy will be transferred from the Primary circuit through the Transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp) and is given by the ratio of the number of turns in the secondary (Ns)
Applications
A major application of transformers is to increase voltage before transmitting electrical energy over long distances through wires. Wires have resistance and so dissipate electrical energy at a rate proportional to the square of the current through
The wire. By transforming electrical power to a high-voltage (and therefore low-current) form for transmission and back again afterward, transformers enable economical transmission of power over long distances. Consequently, transformers have shaped the electricity supply industry. Permitting generation to be located remotely from points of demand. All but a tiny fraction of the world's electrical power has passed through a series of transformers by the time it reaches the consumer.
Transformers are also used extensively in electronic products to step down the supply voltage to a level suitable for the low voltage circuits they contain. The transformer also electrically isolates the end user from contact with the supply voltage. Signal and audio transformers are used to couple stages of amplifiers and to match devices such as microphones and record players to the input of amplifiers. Audio transformers allowed telephone circuits to carry on a two-way conversation over a single pair of wires. A b transformer converts a signal that is referenced to ground to a signal that has balance voltage to ground, such as between external cables and internal circuits .The principle of open-circuit (unloaded) transformer is widely used for characterization of soft magnetic materials, for example in the internationally standardized Epstein frame method.
BRIDGE RECTIFIER
A diode bridge is an arrangement of four (or more) diode in a bridge circuit configuration that provides the same polarity of output for either polarity of input. When used in its most common application, for conversion of an bridge rectifier alternating(AC) input into direct current a (DC) output, it is known as a . A bridge rectifier provides full-wave rectification from a two-wire AC input, resulting in lower cost and weight as compared to a rectifier with a 3-wire input from a transformer with a center-tapped secondary winding. A full-wave rectifier converts The whole of the input waveform to one of constant polarity (positive or negative) at its output. Full-wave rectification converts both polarities of the input waveform to DC (direct current), and yields a higher mean output voltage. Two diodes and a center tapped transformer, or four diodes in a bridge configuration and any AC source (including a transformer without center tap), are needed. Single semiconductor diodes, double diodes with common cathode or common anode, and four-diode bridges, are manufactured as single