First, system overview The timely and accurate measurement of electric energy directly relates to the economic benefits of production and operation. Based on the GSM/GPRS/CDMA public network platform and the automatic meter reading system of wired telephone lines, users are saved from expensive network construction and maintenance costs, and there is no distance and Regional restrictions, as long as there is a local system of mobile phone signals can be stable operation. The GSM SMS wireless meter reading system has an ultra-low operating cost, which also enhances the system's applicability. The meter terminal can actively report the meter data according to the set fixed-point timing. The meter reading center can actively read the value of any one 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., with intuitive, accurate and efficient features. Second, the system composition 1. The system is mainly composed of the following parts: â—† Monitoring Center: (computer, meter reading management system software) â—† Communication network: (based on mobile or telecommunication communication network platform) â—† GPRS/CDMA smart meter collection terminal RTU: (Acquisition field meter signal, transmitted to the monitoring center through GPRS/CDMA network, â—† Measuring instrument: (electric meter) 2, the system structure diagram: Third, the hardware function 1. GPRS/CDMA smart meter collection terminal RTU: Time synchronization: The time base of all substations comes from the unified timing of the master station, which ensures the time consistency of the power collection. Electricity collection and freezing: All substations can freeze the power parameters of the set time, and report to the main station automatically after reaching the reporting time. The transmission of electricity data: When the substation and the main station exchange data, the following transmission methods can be used: (1) GSM/GPRS network mode; (2) CDMA wireless network mode; (3) Wired telephone lines. Storage of electricity data: All substations have a large-capacity FLASH memory that can periodically store electricity data for later access. The storage of data adopts a cyclical coverage method, and the retention period can be more than one year. Fourth, software function â—† Database design: This system uses a three-tier B/S structure, presentation layer (user operation interface), business logic layer and data database layer separation, and supports large DBMS systems such as Oracle, Sysbase, SQL Server (database management system ) This system currently uses the SQL Server2000 database. â—† System curve: In the unit power supply analysis, the user can query the hour, day, month and year of a certain time period and can dynamically select the data item concerned. You can select curves and histograms. â—† Report Design: At present, the system has a unit power supply range report query, the user can select two time periods, select a report module will dynamically enter the PDF or EXCEL report form test file. The user can perform editing and printing in the generated report file. You can also customize the report check template according to the needs of users. â—† Data online real-time display function: After opening the website and entering the online map, the user will see on the online map page the real-time data of the electricity meter on the power supply topology. Users can see the current real-time meter data at a glance. If you want to see more parameters, you can move the mouse to the meter point map and a detailed data table will appear. User-friendly query. Online help: Provides online help function to help users find the operation and use methods of each function; Operation log function: The operator keeps the operation log for the important operation of the system. Online maps: Online maps show local geographical information; Remote maintenance function: The remote device has remote maintenance function, which is convenient for users to install and debug and later maintain the system. Remote meter reading system software interface is as follows: V. System Features â—† Based on GPRS or CDMA wireless network to achieve a wide range of pipeline operation status monitoring, for the user to save the expensive network construction and maintenance costs, high real-time, low network costs; â—† The monitoring information is rich and real, and the system responds quickly; â—† large-capacity database, historical data storage no worries; â—† Multiple sub-centers support, GPRS access, user-friendly management; â—† Highly reliable industrial design, easy maintenance; â—† Significant economic and social benefits and low operating costs; â—† System Extensibility: The system should have powerful extension functions, and users, hard copy functions, report printing functions, and calculation tool functions can be added at any time. Sixth, application areas Electric energy metering remote meter reading analysis system, power grid dispatching automation remote monitoring system, substation remote monitoring system Cummins 21-75KW Diesel Generator Cummins 21-75Kw Diesel Generator,Cummins Power Generator,Cummins Shanghai Power Generator Set,Cummins Generator Shanghai Kosta Electric Co., Ltd. , https://www.ksdpower.com
