According to the market requirements of Energy Meter there is necessity of smart Energy Meter. Nowadays the system will use ZigBee system for communication protocol. The ZigBee is used since the application need high speed data rate, need to be low powered and low cost. In this project presenting the remote wireless Energy Meter Reading System.
This aims at resolving the shortcomings of the technology of the traditional Energy Meter Reading, by combining the characteristics of the ZigBee technology and IEEE802.15.4 standard with AVR Microcontroller ATMega16. The hardware implementation was designed, and then analyzed the use cases for Energy Meter.The automatic metering system is designed to make the prevailing electricity billing system simpler and efficient.
The conventional metering system is done manually. An employee of the Electricity Board will be coming to take the reading and enter in the card. There are more chances of manual error, delay in processing, tampering of the meter and misusage of the Electricity by other sources. It requires so many workers, one set of workers to note down the reading and other set to cut the power if the payment is not paid at the right time and we have very poor servicing.Instead of utilizing man power in billing system, we can automate the system and the man power can be utilized to provide quality service.The system is installed at the site of a standard utility meter and is configured for monitoring and operation by a user via keyword command programming on a data terminal or personal computer.In the Automatic System designed, the units consumed are measured at the consumer side in the form of pulses, it is transmitted to the Electricity Board side where the units consumed and amount equivalent is calculated. The monetary values are displayed both at the consumer module and electricity board side.
CHAPTER : 2
In Maharashtra, there are more than crore meters for electricity that are read every month, at a cost in salaries, transportation and other expenses that tops Rs. 3848.4 crore (2006-2007) . A meter-reading system would still require someone driving by every meter and getting a reading through a hand-held receiver, but even newer technology – called an automatic meter reading system (AMR) – would eliminate even that need.
An AMR is a sophisticated communication link directly from the meters to the central office computers that will also speed locating service interruptions, faulty meters and service theft, as well as allowing for expanded services, such as flexible billing dates, time-of-use rates and prepaid accounts. Meters could also be turned on or off directly from the office rather than having to send out an employee to do it manually.
The study shows an AMR system would save almost 2-3 crore per year by eliminating meter-reading, automating disconnects/reconnects, reducing bad debts and improving meter accuracy and reducing theft of service another positive element of the project would be lower costs for services to the consumer as well.Many service providers of electricity, water, and gas are trying to implement this system.
For example Northern Ireland Water Supply Company had specified it requirements and waiting for tenders. Maharashtra state electricity board has also specified its requirements in 2004-2005.Automatic meter reading technology can not only save human resources, but more importantly may improve the accuracy and real time of the meter, enabling management sector to access to data messages timely and accurately.
No cable wiring can save human and material resources, so investment is considerably economical. Wireless communication links can be quickly built, engineering cycle significantly shortened, and has better scalability compared to a wire-line system . If a fault occurs, only check wireless data module for causes quickly, and then restore the system back to normal operation. In substation there is a requirement of calculating the average daily load, average monthly load, and average annual load. In our project Live Energy meter reading all this calculation are too easy as well as we can also calculate the individual consumer load at our substation or distribution centre.:
PROJECT TITLE“DESIGN AND IMPLIMENTATION OF AUTOMATIC METER READING”:
PROJECT OBJECTIVEAMR stands for Automatic Meter Reading. A device which remotely obtain meter readings and transmits this data to the system’s computer via communication media such as Zig Bee (RF communication module) or dedicated cables for processing.
AMR devices can detect outages, remotely connect and disconnect services, detects tampering as well as other uses. Economic benefits include increased cash flow, lower labor and equipment cost, increased accuracy and lower costs. Some customer satisfaction benefits include improved service quality, more customer choices and faster response time.
1.3 : CURRENT MANUAL SYSTEM
Let’s try to expand the problems in manual meter reading on the following resources:Meter reading resource: TimeTime to access the site.Time to read the meter manually.Meter reading resource: Accuracy/re-work/Manpower cost.Accuracy of noting the readings.Chances of errors while reading.Errors while recording what was read.
Errors during data entry.Meter reading resource: Hard to access meters: (any meter which takes more than 15 minutes to access)Rural accountsIndoor metersObstaclesManual Meter reading: Commercial ImplicationsConveying tamper recording remains on the meter reader’s loyalty.No clue on demand/ over drawls by the consumer.Delay in meter readings, delay bills, delayed revenue, delay in cash-flowCost associated with meter readingThe cost associated with meter reading can have the following headings:Meter reading: CostCost heading Sub cost headingsManpower cost Salaries, Risk and insurancesTransportation cost Cost of ownership (Vehicle),variable cost (Fuel)
CHAPTER : 3MOTIVATION/PROBLEM STATEMENT
Motivation/Problem StatementIn previous work, a technique FPGA-based implementation of AES-128 encryption algorithm was proposed with verilog HDL. The pipelining technology  was utilized in the round transformation and data transmission is modified in the design corresponding chip size reduced  .In this project AES-128 decryption algorithm is also addition with encryption. The AES algorithm operates on a 128-bit block of data and executed Nr +1 loop times. A loop is called a round and the number of iterations of a loop, Nr, can be 10, 12, or 14 depending on the key length. The key length is 128, 192 or 256 bits in length respectively.
The first and last rounds differ from other rounds in that there is an additional AddRoundKey transformation at the beginning of the first round and no MixColumns transformation is performed in the last round. In this we use the key length of 128 bits (AES-128) as a model for general explanation.
Decryption is a reverse of encryption which inverse round transformations to computes out the original plaintext of an encrypted cipher-text in reverse order. The round transformation of decryption uses the functions AddRoundKey, InvMixColumns, InvShiftRows, and InvSubBytes successively.Rapidly increasing number of communicating devices.Information must be transported in a secure manner.Many of these devices are severely constrained regarding processing power, memory resources, and available energy.