An Introduction to automated meter reading system
3 System Components
First, the data collection
1,485 Output meter: meter reading directly from the GSM terminal complete with all the way to independent RS485 interface, supports multiple meter reading communication protocol;
2, pulse output meters: the amount of the collector by the pulse acquisition, along with independent RS485 interface, supports multiple meter reading communication protocol;
3,4-20mA Output mode Instrumentationwater meters,: analog capture device from the collection, along with independent RS485 interface, supports multiple meter reading communication protocol;
Second, the data transmission
Use China Mobile's GSM network (SMS);
Third, the data processing
Completed by the data processing center, which includes data collection server, data processing servers;
Fourth, the system structure
4 GSM data transmission method of system characteristics
The system GSM (SMS) approach to communication
use China Mobile's GSM / GPRS wireless communications network, without line of investment and maintenance costs;
GSM wireless communication module effective lightning;
easy installation, a small amount of construction work;
GSM network because of its wide coverage, communications reliability, the use of economic, especially for automatic meter reading monitoring system.
5 GSM Modem main characteristics of the wireless remote meter reading terminal
terminal meter reading meter reading copy via RS485 interface, Pulse module, 4-20mA module in a variety of data, and classification of storage;
regular meter reading: any user set the meter reading time, meter reading to the end-time uniform in meter reading, and freeze to save all the meter reading data.
time reported: the user can set the time to report any time, meter reading terminal to automatically report the time when the time meter reading data.
hours reported: meter reading to the end of each instant the whole point is automatically reported to the meter reading data, and check regularly reported to have been completed, due to network problems that are found automatically make a report not yet completed the work.
automatic error correction: Automatic reception center to the school when the server sends data to automatically change the clock to keep it accurate.
Data storage: meter reading terminal initialization parameters and timing of daily meter reading data, the use of high-performance data memory storage, the number of regular meter reading on the instrument data can be stored for long periods, for future recovery use.
saving power-down function: ¡Ý 10 years of data, parameter changes, without changing the integrity of the data.
6 Data Processing Center Features
central components: water meter the use of data acquisition server / server combination mode of data processing, database use SQL Server;
data acquisition server with dual hard disk image;
Center software provides initialization of the meter measurement points, instrument rotation, real-time meter reading, meter reading time, time set time setting time reporting;
Center software has a perfect instrument for the table base and management, and automatic monthly statistics report printing function;
center software alarm parameters of the instrument range setting, when an alarm, central auto pop-up warning message prompt window.
