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PROJECT DESCRIPTION

The project is designed to operate electrical load  on and off  for multiple number of times using a time programmable switch. It overcomes difficulties of switching the load on/off manually. This proposed system has an inbuilt real time clock (RTC) to keep a track of the time and thus to switch the load on or off accordingly.

Load shedding is what electric utilities do when there is a huge demand for electricity that exceeds the supply. Thus, in a distribution system, it needs precise control over the specific period of time.

Time programmable switch to control the load is a reliable circuit that takes over the manual task of switching on/off the electrical devices with respect to time. It uses real time clock (RTC) interfaced to the microcontroller of the 8051 family. While the set time  equals to the real time, then the microcontroller gives command to the corresponding relay to turn on the load, and then another command to switch off as per the program off time.

Multiple on/off times entry is the biggest advantage with this project. A Matrix keypad is used for entering time and 7-sement display system is interfaced with the microcontroller to display time.

Furthermore, this project can be enhanced by interfacing a GSM modem to the existing project so that the complete electrical load  control  can be achieved by sending an SMS to the control unit. 

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
Time Programmable Switch to Control Load
Hardware Requirements
  • 8051 series Microcontroller
  • 7-Segment Display
  • RTC
  • Keypad
  • Relay
  • Relay Driver IC
  • LED
  • Crystal
  • Transformer
  • Diodes
  • Regulator
  • Capacitors
  • Resistors
  • Lamp
Software Requirements
  • Keil compiler
  • Language: Embedded C or Assembly
Q & A
Q:  Which microcontroller is used in this project?
A:  The microcontroller used in this project is a 40 pin IC from 8051 family.
Q:  What is RTC?
A:  RTC stands for Real Time Clock. It provides time and date reference along with memory back up.
Q:  Can I replace lamps with any other load?
A:  Yes, any electrical load with wattage up to 200W can be used.
Q:  How can one set the time?
A:  A numeric keypad is provided to set the time
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