10-06-2017, 06:57 AM
Abstract
Nowadays, there is a growing need to develop
appropriate methods to acquire, process and interpret large
amounts of data in real time to assist the decision making process
for optimal drinking water distribution systems management.
The presented wireless AMR methodology, which was piloted in
Talsi city, is designed as warning systems to prompt the
appropriate response to eliminate or mitigate leaks, client s fraud
and to ensure customers and water supply companies with
reliable and timely data. One of the main benefits of the
methodology presented here is that it enables operators to
become more effective and efficient in emergency conditions.
Keywords: automatic meter reading, sensors, concentrators,
GPRS.
I. INTRODUCTION
Last year s considerable investments have been made in
order to modernize water distribution networks (WDN) in the
cities and in rural regions of Latvia. For example, nowadays
most of WDN use Supervisory Control and Data Acquisition
systems (SCADA) for control water pump stations.
A local water supply company, which ensures water supply
to 16 000 householders in one Latvian city with 45 000
inhabitants, calculated their loss in year 2008. The total
estimated loss of revenue calculated using local tariffs was
estimated about 1 140 000 EUR.
Therefore the lack of actual data about the state of WDN
and lack of reliable methods for localization of water leaks
prevents to reduce loss due to inaccurate meters, burst of pipes,
illegal connections and customer fraud.
The problem: is the lack of reliable and efficient methods
and tools for monitoring and control of water distribution
network that in its turn prevents to obtain current and historical
data about water network at source and input - output points.
II. POSSIBLE SOLUTIONS SURVEY
Automatic meter reading, or AMR, is the technology of
automatically collecting consumption, diagnostic, and status
data from meter devices (water, gas, electric etc.) and
transferring to a central database for billing, troubleshooting,
and analyzing. This advantage saves utility providers the
expenses of periodic trips to each physical location to read a
meter, but another advantage is billing that can be based on
near real time consumption rather than on estimates based on
previous or predicted consumption [4].
A major prerequisite required by automatic remote meter
reading to penetrate the market is the rapidly progressing
technological development. This applies both to the
availability of electronic consumption-measuring devices and
to the development of transmission methods in local areas via
data bus and radio. The availability of new communication
methods such as GSM, SMS and Internet services will also
play a major role in future for transmitting data at a favorable
price from residential buildings to central billing centers and
providing extra services for the user [1]. According to some
experts meter data receive rate of the water AMR system has
been showed up to 97.2%
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