Drd. eng. Adrian Mugur SIMIONESCU
Rezumat
Articolul prezinta un sistem de achizitie si prelucrare a tensinilor si curentilor dintr-o retea electrica de joasa tensiune, structura dezvoltata pentru a putea fi integrata intr-un sistem complex de management energetic. Sistemul,pentru a se asigura o flexibilitate marita, este modular si este complet configurabil software. Toate modulele componente sunt compatibile, toate semnalele de intrare / iesire fiind semnale standard (0..100Vca, 0..5Aca, respectiv 4..20 mA – semnal unificat). Toate modulele sunt interschimbabile, configurarea tipului de semanl de intrare fiind realizata usor prin interfata prietenoasa a aplicatiei pentru calculator. Sistemul este format dintr-un set de conditionere de semnal, dintr-o
placa de achizitie de date si un calculator personal. conditionerele de semnal au iesirea in semnal unificat, iar placa de achizitie de date comunica cu calculatorul prin intermediul unui port serial (RS232 sau, in cazul unui risc ridicat de perturbabilitate, RS485). Pe calculator ruleaza o aplicatie cu interfata prietenoasa, aplicatie care este singura responsabila
de configurarea sistemului si de stocarea de date.
Cuvinte cheie: achizitie de datesemnal unificatmonitorizare tensiune.
Abstract
The article presents an acquisition and processing system for voltages and currents from a low voltage electrical network, a structure developed to be integrated into a comprehensive energy management system. The system to ensure increased flexibility, is modular and is fully customizable by software. All modules components are compatible,
all signals input / output signals are standardized (0 .. 100V AC, 0 .. 5A AC and 4 .. 20 mA - unified signal). All modules are interchangeable, the input type configuration is made easy by the user-friendly interface application. The system consists of a set of signal conditioners, a data acquisition card and a personal computer. All conditioners have the output in unified
signal, and data acquisition board communicates with computer through a serial port (RS232 or if a high risk of
interference, RS485). On the PC is running an application with friendly interface, responsible for system configuration and data storage.
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