Published on March 6, 2014
CONTROLLING HOME APPLIANCES USING REMOTE Submitted by J Shravani (ES12B1009) Harshwardhan Mourya (ME12B1019) K Vivek Varkey (CH12B1011) Indian Institute of Technology Hyderabad
INTRODUCTION The aim of this project is to design a circuit such that one can control home or industrial appliances using the help of remote. Using remote to control appliances reduces human efforts without compromising on efficiency. It also saves time. This circuit can be operated upto a distance of 5-10 metres depending upon the remote which we use.
REQUIREMENTS Step-down transformer X1 (6V-0-6V, 250mA secondary) 5V regulator 7805 (IC1) 1 change-over (C/O) relay Timer NE555 IC (IC2) IR receiver module (IRX1 TSOP1738)
WORKING Home appliance is controlled either by pressing any key on the remote or by manually pressing switch S1 to ‘on’ state. The circuit works on regulated 5V which is derived from X1 and regulated by IC1. The TV/DVD remote controller produces 38kHz frequency IR RECEIVER MODULE: The IR receiver module operates at this frequency(38kHz). It is used to control relay RL2. The relay triggers IC2, which is wired in a bistable mode to control the home appliance connected at the contacts of relay RL1. iggeins6 and 2 of IC2 are held at one-half of the power supply voltage (5V) by resistors R2 and R3. When output pin 3 of IC2 is high, capacitor C4 charges through resistor R4, and discharges when the output pin 3 is low.
TIMER NE555 IC (IC2): When switch S1 is pressed, capacitor C4 voltage is applied to pins 2 and 6 of IC2, which causes the output of IC2 to change from low to high, or high to low. When switch S1 is released capacitor C4 charges or discharges to the original level at the output pin3 of IC2. IR receiver module (IRX1 TSOP1738) : At normal condition, when IR rays are not incident on TSOP1738, its output at pin 3 remains high. When any TV remote key is pressed, IR rays fall on the TSOP1738 and its output goes low At the same time relay RL2 energises for a few seconds through pnp transistor T2 (BC558).
STEPS INVOLVED IN WORKING: 1. Switching on the electrical appliances: Initially, when there are no IR rays falling on the IR receiver module, its output remains high. Transistor T2 is in cut-off condition. Relay RL2 does not energise and hence IC2 does not toggle. As a result home appliance connected at the contacts of relay RL1 remains switched off. When a remote key is pressed, IR receiver module’s output becomes low and collector of the transistor T2 becomes high. Relay RL2 energises and triggers IC2. Output of IC2 goes high and relay RL1 energises to switch on the appliance. Once relay RL1 is energised it remains in that state.
So the appliance which is connected at the contacts of relay RL1 remains switched on. 2. When you press any remote key the second time, relay RL2 energises and re-triggers IC2. Output of IC2 becomes low and relay RL1 de-energises to switch off the appliance. Once relay RL1 de-energises it remains in that state. So the home appliance remains off. This cycle repeats when any key of the TV remote is pressed to switch on/off the home appliance.
APPLICATIONS This system can be used in industrial applications This system reduces human efforts and makes life a bit easy without compromising on the efficiency of appliances. Using this system one can also save time. ADVANTAGES Portable and easy to use. Simple in construction. Easy to maintain and repair. Efficient and low cost design. Low power consumption.
Presentación que realice en el Evento Nacional de Gobierno Abierto, realizado los ...
In this presentation we will describe our experience developing with a highly dyna...
Presentation to the LITA Forum 7th November 2014 Albuquerque, NM
Un recorrido por los cambios que nos generará el wearabletech en el futuro
Um paralelo entre as novidades & mercado em Wearable Computing e Tecnologias Assis...
CONTROLLING HOME APPLIANCES USING REMOTE. ... control home or industrial appliances using the help of remote. ... home appliance connected at the ...
International Journal of Smart Home Vol. 2, No. 3, July, 2008 37 Remote Controlling of Home Appliances using Mobile Telephony Rifat Shahriyar1, Enamul ...
Controlling Home Appliances Remotely Through Voice Command ... 2. Remote Control using Mobile through Spoken ... Controlling home appliances with wireless ...
Controlling Home Appliances Remotely through ... link of home appliances to the remote ... the voice into text using android intent API 2.01.
This circuit can be used to turn off electrical appliances by using any remote ... for 2 secs each. without remote control ... home gate security using ...
development of a remote household appliance control system using ... Remote Controlling of Home Appliances using ... Journal of Smart Home,Vol. 2, ...
Home Appliances Controlling Using ... 2. Devices are operated using remote. ... Iftekhar Naim, “Remote Controlling of Home Appliances using Mobile ...
Microcontroller Based Remote Control of Home ... Based Remote Control of Home Appliances 1, 2 ... remote controlling of home appliances using ...