Chương 3 - DAS data acquisition systems. Chương này gồm có những nội dung chính sau: DAS overview; measurement, sensors, transducers; conditioners, các bộ chuẩn hóa tín hiệu; MUX, S&H, ADCs; microcontrollers and data processing; database; case studies: monitoring systems. | 8/26/2012 Ch. 3 DAS DATA ACQUISITION SYSTEMS • DAS overview • Measurement, sensors, transducers • Conditioners, các bộ chuẩn hóa tín hiệu • MUX, S&H, ADCs • Microcontrollers and Data Processing • Database • Case studies: monitoring systems Ch3 - DAS 1 . DAS Overview • Define: – Data Acquisition System: The system for acquiring data (status, metric information) from industrial processes (or environment) then update to database, one of importance part of a SCADA, DCS – The collection of sensors and communication links to sample or collect and then return data to a central location for further processing, display, or archiving. • Structure: next Ch3 - DAS 2 1 8/26/2012 . DAS Overview Ch3 - DAS 3 . DAS Overview • Student’s define for structure: – – – – – – – – Object: Sensor: Conditioner: WorkBench, LabView MUX: S&H: ADC: Embedded System Computer Desktop: database and networking Ch3 - DAS 4 2 8/26/2012 . DAS Overview • Operate: – – – – – – – Process Sensor Conditioner MUX S&H and ADC ES Database system Ch3 - DAS 5 . DAS Overview • Classification: – – – – The number of data elements/points, Distance/wide area Rate of signal Address of application and type of information: • Industrial fields: level, flow, temperature, pressure, in cement, paper, textile, steel mill, mechanical factories • Civil engineering: dams, bridges, underground/ underwater constructions, high building => constructions supervision system • Environmental supervision system Ch3 - DAS 6 3 8/26/2012 . DAS Overview • Transportation: Vehicles, ship, aero plane: velocity, accelerate, gasoline ratio, safety equipment, Navigation ; Traffic signals • Bio-medicine: Cardiograph, Monitoring, smart garden and growth • Defense: DGPS, • Entertainment: • Smart house: temperature, lighting, air conditioning (heating/ freezing), plant watering, auto-answering, smart cooking iBMS Ch3 - DAS 7 . DAS Overview • Questions and Answers • Student’s examples Ch3 - .
