Bluetooth is the buzz word, while designing any automation system for study purpose. Automation of Home/Work place is common using short range communication technology, called Bluetooth. This is because physically challenged or elderly/sick people cannot access all devices/gadgets present in the home/work place. The Bluetooth enabled Android Mobile Phone can be used as remote control and control all fan, light, water heater, garage door etc. by sitting at one place.
Objective: The system which allows user to control many home/work-place gadgets at single point. Note that getting current status of the controlling gadget can also be implemented with slight code change.
This Password Protected Electronic Wireless Control System has two parts: User end who uses Android App on his Android Mobile to send command to control power supplied gadgets via Bluetooth means; and Control end where all controlling gadgets are connected by main controller unit and which also decodes Bluetooth received commands and act accordingly. The controller module is based on popular 8051 microcontroller chip. Its memory resident program/code monitors its Bluetooth module over its UART port or serial port for any user commands. If any data found at serial communication(UART protocol)it is decoded as switching command and accordingly executed on output port connected loads. The output port connected Display Modules shows current status of the system and gadgets switching state.
Note that DTMF technique can also be used to control electrical appliance at home/work place without touching wall sockets / switches.
The intended device needs Android App in user Android mobile hand set prior using this system. The range of the system is defined by used Bluetooth's communication range.
Since mains supplied loads are controlled care should be taken while designing and controlling system.
Applications:
The system is used as wireless remote controlled automation system at home/work-place.
Since single point control is possible, useful for elderly/sick or physically challenged people.
Since system is embedded and wireless portability is done very easily. Changing controlled loads is also very easy.
Title: Android Based Home Automation System
External Links: electronicshub.org
- Bluetooth Controlled Electronic Home Appliances
Keywords: Microcontroller, AT89c51, Embedded, Bluetooth, LCD, Android, UART, Automation
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…till next post, bye-bye & take care.
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