Remote
meter and intelligent centralized meter reading system is the use of
microelectronic technology, self-control technology, communications
technology and network technology to measure the amount of water and
water data transfer and settlement transactions of the new smart meter.
In
accordance with the measurement base table and management center
computer system transmission method is divided into remote meter
wireless automatic meter reading system and remote meter wired network
automatic meter reading system.
Far from the meter specifications: DN15 to DN200, covering all the meter diameter.
Remote meter wired network automatic meter reading system
The
whole system is composed of the management center computer system,
transmission network, bus network, data concentrator, data collector,
remote meter, composed as follows:
The use
of this meter reading method, is the water meter electronic measurement
of water volume information sent through a feeder to a data
concentrator, a number of data concentrator and then connected to each
other to form a network and then use two methods to collect meter
reading data.One is to use a laptop or a dedicated meter reading machine to connect to the site to collect data.The
second is to use a modem to connect to a WSC computer system via a
telephone line, radio station or network technology (GPRS, GSM, CDMA)
for meter reading.This approach is more networked
than radio meter reading system, but also relatively reduce the
interference, but also lower cost, confederation rate is low,
maintenance is relatively easy, is a more easy to implement a program is
now installed aroundMostly use this system.
Remote Water Meter Wired automatic meter reading system mainly through the following four links to complete:
1, The signal conversion link This
link is mainly the sensor through the gear transmission into the switch
signal or electrical signal output, the sensor installed in the meter
reading plate or counting gear set, and intelligent prepaid meter
similar to the ordinary water meter is also used as a base table.
2, Data acquisition, storage links The
signal formed by the sensor, after counting, signal processing,
accumulation and other processes into water meter measurement data and
dynamic storage, waiting for meter reading, is done by the data
collector.
3, The data link Centralized
way of communication using a handheld meter reading (or a dedicated
meter reading machine) on-site meter reading and telephone networks,
network technology (GPRS, GSM, CDMA), radio meter reading, they are the
system's data concentrator.
(1) Pocket PC (or dedicated meter reading machine) on-site meter reading. Connect
the communication line of your handheld computer (or a dedicated meter
reading machine) to the dedicated communication socket of the data
logger (or through the infrared interface) in the field. In
the handheld computer (or dedicated meter reading machine) can be
completed after a simple meter reading, one can copy hundreds or even
thousands of households. The
Pocket PC (or a dedicated meter reading machine) back to the company
connected to the company's computer to upload meter reading data for
billing. This method is currently used more generally.
(2) telephone network, radio meter reading. In
the data concentrator and corporate computers through the modem and
telephone lines connected to or radio stations, but also can be copied
hundreds or even thousands of households. The
telephone network needs to install a smart splitter. The intelligent
splitter identifies the specific signal sent by the incoming party's
telephone, connects the connection between our computer and the data
concentrator, and completes the meter reading. When the wireless station
reads the meter, Computers and concentrators are far apart, and you can not use the telephone dialing, you can use this method. According to different radio transmit power, the transmission distance is generally a few kilometers to tens of kilometers. The transmission of this kind of communication is apt to be disturbed
by the stray electric wave, the bit error rate is high, the reliability
is affected.
(3)
network technology, is the master computer and concentrator by network
technology, such as GPRS, GSM, CDMA and other technologies, direct meter
reading connection, without distance, time constraints, safe and
reliable, fast transmission, Accurate
information in a timely manner, enabling online monitoring of water
meters for all water users, this approach will be imperative in the
future.