Overview of Remote Meter Reading System of Electric Meters
1. Basic situation:
Coal, cement, iron and steel, calcium carbide, lime, oil fields, coking and other high energy-consuming industries are gradually developing towards comprehensive development. The functional area is complex, the building scale is huge, and various advanced systems and electromechanical equipment appear in large numbers. These changes and developments have put forward higher requirements for the safety, reliability, energy saving and easy maintenance of the energy supply system.
The remote meter reading system for industrial users' electricity meters relies on the GPRS network to realize the automation and precision of meter reading. The power consumption control center can monitor the power consumption status of industrial users' electromechanical equipment through the electronic display screen, and each monitoring point transmits the power consumption status to the control center in time in the form of GPRS. In this way, it is possible to automatically, efficiently and timely grasp the electricity consumption of electromechanical equipment, automatically generate power distribution plans, and implement scientific power marketing and management. This device overcomes the disadvantages of low accuracy of manual meter reading, time-consuming and labor-intensive, and lack of centralized and effective management, and solves the worries of production.
The automatic meter reading system based on GSM/GPRS public network platform saves expensive network construction and maintenance costs for industrial users. And there is no interval and regional restrictions, as long as there is a local system with a mobile phone signal, it can run stably. Among them, the GSM short message wireless meter reading system has ultra-low operating costs, which also enhances the applicability of the system. The remote meter reading system for industrial users' electric meters can automatically report the meter data according to the set fixed point timing. The monitoring center can automatically read the value of any meter at any time, and the data is automatically stored in the database, which is convenient for the operator to query later. The system can automatically generate daily reports, monthly reports, graph curves, etc., which are intuitive, correct and efficient.
2. The system plan:
2.1. System overview:
The remote meter reading system for industrial users' electricity meters is composed of a distribution monitoring center and electrical and mechanical equipment meter monitoring points. It uses China Mobile's existing GPRS/GSM network, and the meter data is transmitted through the GPRS/GSM network. The electricity consumption data of the electromechanical equipment is transmitted from the smart meter to the electric energy collection terminal through the RS485 bus. The electricity meter data is encapsulated by the protocol and then sent to the GPRS data network. The data is transmitted to the power distribution monitoring center through the GPRS data network to realize the meter data and the monitoring center. Real-time online connection of the system. The data is summarized and analyzed by the background analysis software to form various report data.
The industrial user electricity meter remote meter reading system is a system that automatically and correctly collects, transmits, counts and comprehensively analyzes the real-time electricity consumption information of electromechanical equipment and various fault information data. It has the characteristics of fast copying speed, high calculation accuracy, and good meter reading simultaneity.
2.2. System composition:
2.2.1. Data management layer (monitoring center):
The hardware mainly includes workstation computer, server (Telecom, China Mobile or China Unicom fixed IP line or dynamic IP domain name);
The software mainly includes operating system software, data center software, database software, industrial user meter remote meter reading system software platform (using B/S structure, can support browsing and viewing in the wide area network), firewall software;
2.2.2. Data transmission layer (data communication network):
Using the mobile company's GPRS network to transmit data, the system is simple, fast and stable without wiring.
The mobile wireless networking mode has the characteristics of high data transmission rate, wide signal coverage, strong real-time performance, high security, low operating cost, and low maintenance cost.
2.2.3. Data acquisition layer (front-end hardware equipment):
Complete set of remote measurement and control equipment: electric energy collection terminal (meter reading terminal).
Sensing and metering equipment: electronic electricity meters, electronic electricity meters, smart electricity meters.
