28-08-2017, 04:22 PM
Identifier of energy theft based on microcontroller, introduces the concept of preventing the illegal use of electric power. Here the principles of radio communication are used and microcontroller technology is also used to find out the user trying to steal energy, ie showing the respective number and direction of the meter.
For complete operation, the system can be subdivided into two main sections, one is the transmission section and the other is the receiving section. The transmission section has to be incorporated at the end of the consumer and the receiver section has to be placed in the electrical substation.
In the transmission section, two types of automatic power theft detection schemes are provided. In the first scheme, an electro-optical sensor is placed inside the meter (inside the lower cover) and is configured to supply the trip signal for the timing circuit. When the light falls on it (when the user tries to open the lower cover), the output of the timer circuit energizes a relay that provides power for the modulation input section that differs from user to user. An F.M Transmitter is designed with a 100 MHz carrier. Here, the modulation input is superimposed on the carrier and transmitted. In the second scheme, a transmitter is connected to the bottom cover. If the user touches this lower cover, due to the electrostatic charge associated with the human body, the transistor switches on and energizes the relay, which provides power to modulate the input section.
In the receiving section, the received signal is demodulated, amplified and digitized (using ADC) and fed to the Microcontroller (8051). The microcontroller identifies the frequency and its associated user. Then activates an alarm and displays the user's address.
For complete operation, the system can be subdivided into two main sections, one is the transmission section and the other is the receiving section. The transmission section has to be incorporated at the end of the consumer and the receiver section has to be placed in the electrical substation.
In the transmission section, two types of automatic power theft detection schemes are provided. In the first scheme, an electro-optical sensor is placed inside the meter (inside the lower cover) and is configured to supply the trip signal for the timing circuit. When the light falls on it (when the user tries to open the lower cover), the output of the timer circuit energizes a relay that provides power for the modulation input section that differs from user to user. An F.M Transmitter is designed with a 100 MHz carrier. Here, the modulation input is superimposed on the carrier and transmitted. In the second scheme, a transmitter is connected to the bottom cover. If the user touches this lower cover, due to the electrostatic charge associated with the human body, the transistor switches on and energizes the relay, which provides power to modulate the input section.
In the receiving section, the received signal is demodulated, amplified and digitized (using ADC) and fed to the Microcontroller (8051). The microcontroller identifies the frequency and its associated user. Then activates an alarm and displays the user's address.