networked wireless meter reading
TRANSCRIPT
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Networked Wireless Meter ReadingSystem Based on Zigbee
Technology
presented by,
CHINCHU K SASIS7 EEEROLL NO : 18
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Benefits of Advanced Metering
Accurate meter reading, no more estimates
Improved billing
Accurate Profile Classes and Measurement Classes,true costs applied
Improved Security for premises
Energy Management through profile data graphs
Less financial burden correcting mistakes
Less accrued expenditure
Less time chasing call centers to provide meter readings
Transparency of cost to read metering
Improved procurement power though more accuratedata - de-risking price
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CONVENTIONAL ELECTRICITY METERAND ELECTRONIC TOU METER
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WHAT IS ZIGBEE ?
Technology of data transfer in wireless networks
Low cost
Low power consumption
Less time consuming
Less tiring
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ZIGBEE ARCHITECHTURE
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ZigBee Frequencies
868 MHz European Band at 20kbps
ISM 2.4 GHz Global Band at 250kbps
915 MHz North American Band at 40kbps
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ZigBee Frequency Bands
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Network Topology Models
PAN coordinator (PANC)
Full Function Device (FFD,Router)
Reduced Function Device (RFD)
Star
Mesh
Cluster Tree
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THE FEATURES OF ZIGBEE
MODULE USED IN TOU METER
- Transmit power : 1mW or 0dBm - Receiver Sensitivity : -92 dBm - Range : 30m (indoor), 100m (outdoor) - Data Rate : 250 kbps (max)
- Internal packet memory : 127 Bytes - Module data interface : serial
- Serial data rate :1200-115200 bps - Operating frequency : ISM 2.4GHz - Antenna : chip type
- Supported topologies : Point-to-point, Point-tomultipoint and Peer-to-peer - Channels : 16 Direct Sequence - Addressing Options : PAN ID, Channel and Addresses - Dimension : 2.438 cm x 2.761 cm
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Zigbee through AMR system
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Tou meter with zigbee RF trancievermodule
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INTERNAL HARDWARE ARCHITECTUREOF TOU METER
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RS 232 Serial communication MAX 232
FEATURES: Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28 Operates From a Single 5-V Power Supply
With 1.0-_F Charge-Pump Capacitors Operates Up To 120 kbit/s Two Drivers and Two Receivers 30-V Input Levels Low Supply Current . . . 8 mA Typical ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A) Upgrade With Improved ESD (15-kV HBM) and 0.1-_F Charge-Pump Capacitors is Available With the MAX202 Applications - TIA/EIA-232-F, Battery-Powered Systems, Terminals, Modems, and Computers
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Transmission in 89C51
Register SBUF to hold data.
Register SCON controls data communication. RegisterPCON controls data rates.
Pins RxD (p3.0) and TxD(3.1) connect to serial data n/w.
SBUF is physically two registers, one is writing only.The other is read only and holds received data from anexternal transmitting source via RxD.
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The data transmission steps are:
Initially the t1 flag is reset.
Data to be transmitted must be written into
SBUF. As soon as data is transmitted the T1 flag is set
and main program is interrupted to execute ISR.
In the ISR T1 flag is reset .another data iswritten in SBUF register.
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Liquid Crystal Display (LCD)
More flexible than LED display andallow variety of text and/or graphics
Suitable for low power applications More reliable in sunlight and can use
backlight for night viewing
LCD size specification same as amatrix order
LCDs are expensive
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Zigbee coordinator zigbee device
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CONCLUSION
It is high time that our traditional billingsystem gives way to the modern one. Thissystem will prove to be a majorbreakthrough in the field of billing systemin the future and hopefully this will be atrendsetter in the years to come.
| A SMART WORLD IS THE FUTURE
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FUTURE SCOPE
Can include more operations
Distance can be increased
For wide area operation, other technologiescan be used
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THANK YOU