Automatic system for collecting data from consumers' gas metering units
JV Radmirtech worked out an integrated solution for developing an automatic system for collecting data from consumers’ gas metering units (hereinafter, ASCD),for organizing access to consumers’ gas metering units and for generating and compiling balance reports by gas consumption accounting and supervision services.
ASCD provides wireless data transmission from gas metering units to the enterprise server for compiling gas consumer balance reports, and performing accounting and calculation operations; for subsequent analysis of data received, identifying contingencies, compiling an individual gas consumption profile for groups of enterprises and each consumer, and for their statistical control.
Introducing ASCD from gas metering units provides the following functionality:
– receiving real-time information on current gas consumption by each consumer;
– automating the process of managing gas metering and compiling balances;
– simplifying access to readings of gas metering units, and mitigating the human factor effect;
– detecting without delay attempts of tampering with gas metering units;
– reducing gas consumers’ servicing costs;
– predicting peak loads;
– cutting losses of gas supply companies by improving metering management.
– devices and equipment for gas metering units:
- Industrial consumers: measuring complexes KV and correctors VEGA, gas calculators of standard size G16 and higher;
- domestic consumers: domestic gas meters (BSG) and gas meters with a standard size within G10;
– set of equipment for collection and transmission of data from gas metering units:
- smart radio terminal iMod-Vega (hereinafter, radio terminal iMod-Vega);
- communicator VEGA;
- GSM modem TKB for domestic gas meters;;
- radio module VEGA-T;
- network hub МSК-1;
- portable data collection console PPSD with a USB flash memory stick;
- information transfer device UPI;
– server equipment, a personal computer and program package «nVega» for data processing and report generation.
ASSD is designed to transmit data from gas metering units of industrial and domestic consumers over a GPRS packet channel and a GSM digital cellular radio communication network to the database in the enterprise server with subsequent processing of these data and output of generated balance reports to the PC display via a WEB portal.
Data from gas metering units, the VEGA communicator or the radio terminal iMOD-Vega can also be read with data transfer devices UPI with their subsequent connection to a PC to generate daily or monthly commercial reports.
1. INDUSTRIAL GAS CONSUMERS.
Data from gas metering devices supporting the standard Modbus protocol are transmitted to communicator VEGA. Data from gas metering devices not supporting the standard Modbus protocol are transmitted to radio terminal iMOD-Vega with subsequent transmission of received information to the principal enterprise server over a GSM digital cellular radio communication network.
- Transmission of closed and open day account data from gas metering devices over a GPRS channel to the enterprise server. The principal enterprise determines the data transmission schedule;
- e-mail messages on the status of the communicator VEGA GSM or radio terminal iMOD-Vega to a user-defined address;
- working with existing polling programs over the CSD channel;
- remote change of the communication schedule and the volume of information transmitted by devices to the enterprise server.
Information is accumulated and stored in a non-volatile 2 MB memory.
2.DOMESTIC GAS CONSUMERS
Gas consumers in the housing and public utilities sector who have gas meters with the standard size up to G10 transmit gas meter data over a GSM digital cellular radio communication network to the enterprise server with a GPRS modem TKB for domestic gas meters, which is linked to the gas meter via an impulse transducer.
To organise automatic collection of data from consumers using domestic gas meters, JV Radmirtech has designed the VEGA-NET system for automatic data collection ВЕГА-NET, with the following functionality:
- Receive real-time information on current gas consumption by each consumer;
- Automate the process of organizing metering and maintaining gas consumption logs for each consumer;
- Simplify access to readings of gas metering units, and mitigate the human factor effect;
- Build up the system from a single device to a self-organizing network;
- Detect in time attempts of tampering with gas metering devices;
- Detect attempts of using a magnet to tamper with a metering device to alter the readings (date, time of start and end of magnet action);
- Predict peak loads;
- Analyse small leakages – detect gas leakage by analysing per hour consumption data;
- Introduce the function of shutoff of gas supply in the event of non-payment.
Automatic data collection from domestic gas meters (BSG) implies connecting radio module VEGA-T to each BSG.
Data accumulated from radio module VEGA-T are transmitted over a radio communication channel to the network hub MSK-1 installed in the network centre.Network hub MSK-1 transmits information to the dispatcher server over a GSM digital cellular radio communication network by using built-in radio terminal iMOD-Vega.
For not linked radio modules VEGA-T (e.g., remote private households, choked radio channels, and so forth), data are collected over a radio communication channel with portable data collection console PPSD to transmit its data to the dispatcher server with a USB flash memory stick.
3.RECEIVING AND PROCESSING DATA.
The enterprise server (Gmpd) processes data from metering units of industrial and domestic gas consumers, which were received over the packet GPRS channel and the GSM digital cellular radio communication network or from the USB flash memory stick from PPSD, and enters it to the SQL database. At the instance of processing data from the GSM modem of the VEGA communicator or MOD-Vega radio terminal, the server checks the SQL database for availability of tasks for the VEGA communicator GSM modem or iMOD-Vega radio terminal .If such tasks are available, they are sent to it for execution.
All the information is accumulated and processed by the enterprise server (Gmpd). Data access is via the Web portal with the help of the Server software “Cabinet of metrologist”, which provides access to data of all gas metering devices (real-time, per hour, daily, monthly, on tampering, and so forth). The “Personal cabinet” function is available with access of owners of gas metering units to their data.
Data can also be read from gas metering devices by using information transfer devices UPI with their subsequent connection to a computer to generate daily and monthly commercial reports, and to analyse the information read with the “nVega” program package .