11-04-2011, 09:35 AM
Presented by:
Amrita Pattnaik
[attachment=11969]
INTRODUCTION
• The meaning of AMR:
Automatic meter reading (AMR) is the collection of, at a remote central location, data from consumption meters located at customers’ premises via telecommunication links.
The meters could measure gas, water or electricity flow. These links could be Telephone lines, powerline carrier communication (PLCC), Radio frequency CATV etc.
Automatic Meter Reading (AMR) is a telephone-based, calling outbound system, for utility control and reliable, low-cost meter reading.
With the use of AMR, the need of a person to visit the consumer’s site and record the readings of the meters is eliminated. This also prevents human errors in recording the reading
WHAT’S AMR
AMR brings significant benefits to the customer by providing increased meter-reading accuracy, fewer estimated bills, rapid response to read requests, automatic leak detection and billing options and provids detailed usage information about individual sites, which allows the utility to offer variable rates and encourage price-responsive behavior among customers.
AMR improves operational management by providing just-in-time meter replacement, tamper detection, remote access, and automatic scheduling of meter reading. In short, AMR will optimize cost savings and maximize efficiency for Anglian Water while providing improved customer service.
HOW DOES THE SYSTEM WORKS?
The key to the system is a device called an ERT( Encoder-Receiver-Transmitter).
This device is connected directly to a special electronic register on the water meter.
Normally, the ERT does nothing - it "sleeps," waiting for the meter reader to approach.
The meter truck-mounted reading the device sends out a continuous "wake up" signal.
When an ERT receives the signal, it checks the reading on the meter register, encodes it into a digital signal, and begins transmitting its identification number and the current reading.
After a few minutes, the ERT stops transmitting and goes back "to sleep," waiting for the next time meter reading.
The truck-mounted computer system matches the ERT identification number with the property and records the reading. At the end of the day, the meter reader unloads the information to our billing system.
AMR also need Meter Interface Unit (MIU).It responds to calls initiated through the software installed on a PC. A simple three-wire hook-up from the encoded register provides input from the meters to the MIU.
OPERATING PRINCIPLE
To operate the AMR, Power Line Modem (PLM) is used, which transmits and receives data over the power line.
The PLMs operate in a Half Duplex, two-way, Time Division Multiplex communication mode.
Both the MIU and the DCU contain the PLM device.
The binary data stream is keyed onto a carrier signal by means of the Frequency Shift Keying (FSK) technique.
The central frequency is shifted +0.3KHz to represent 1 or 0 of the binary data stream. s then coupled onto the power line by the PLM.
At the receiving end, an identical PLM will detect the signal and convert it back to a binary data stream. ode.
Amrita Pattnaik
[attachment=11969]
INTRODUCTION
• The meaning of AMR:
Automatic meter reading (AMR) is the collection of, at a remote central location, data from consumption meters located at customers’ premises via telecommunication links.
The meters could measure gas, water or electricity flow. These links could be Telephone lines, powerline carrier communication (PLCC), Radio frequency CATV etc.
Automatic Meter Reading (AMR) is a telephone-based, calling outbound system, for utility control and reliable, low-cost meter reading.
With the use of AMR, the need of a person to visit the consumer’s site and record the readings of the meters is eliminated. This also prevents human errors in recording the reading
WHAT’S AMR
AMR brings significant benefits to the customer by providing increased meter-reading accuracy, fewer estimated bills, rapid response to read requests, automatic leak detection and billing options and provids detailed usage information about individual sites, which allows the utility to offer variable rates and encourage price-responsive behavior among customers.
AMR improves operational management by providing just-in-time meter replacement, tamper detection, remote access, and automatic scheduling of meter reading. In short, AMR will optimize cost savings and maximize efficiency for Anglian Water while providing improved customer service.
HOW DOES THE SYSTEM WORKS?
The key to the system is a device called an ERT( Encoder-Receiver-Transmitter).
This device is connected directly to a special electronic register on the water meter.
Normally, the ERT does nothing - it "sleeps," waiting for the meter reader to approach.
The meter truck-mounted reading the device sends out a continuous "wake up" signal.
When an ERT receives the signal, it checks the reading on the meter register, encodes it into a digital signal, and begins transmitting its identification number and the current reading.
After a few minutes, the ERT stops transmitting and goes back "to sleep," waiting for the next time meter reading.
The truck-mounted computer system matches the ERT identification number with the property and records the reading. At the end of the day, the meter reader unloads the information to our billing system.
AMR also need Meter Interface Unit (MIU).It responds to calls initiated through the software installed on a PC. A simple three-wire hook-up from the encoded register provides input from the meters to the MIU.
OPERATING PRINCIPLE
To operate the AMR, Power Line Modem (PLM) is used, which transmits and receives data over the power line.
The PLMs operate in a Half Duplex, two-way, Time Division Multiplex communication mode.
Both the MIU and the DCU contain the PLM device.
The binary data stream is keyed onto a carrier signal by means of the Frequency Shift Keying (FSK) technique.
The central frequency is shifted +0.3KHz to represent 1 or 0 of the binary data stream. s then coupled onto the power line by the PLM.
At the receiving end, an identical PLM will detect the signal and convert it back to a binary data stream. ode.
