EuroSun2008-5

Hardware Structure

There are obvious advantages that the instrument based on PXI technology possesses a high speed, a small size and easy expansion, so the hardware structure will use PXI bus technology and relevant products based on the PXI bus. The system concludes PXI-1042 chassis, PXI-8186 Controller, PXI - 6221 multifunction data acquisition card, PXI-4351 high-precision temperature and voltage logger, PXI-6513 digital I/O card, and SC-2345 signal conditioning modules.

Fig. 3 shows the physical structure. PXI-1042 as chassis has 8 slots to comply with PXI and CompactPCI specifications with universal AC power supply. PXI-8186 as embedded controller can greatly improve the system scalability and integration. PXI-6221 multifunction data acquisition card can support two 16-bit analog outputs and has 24 digital I/O, 32-bit counters and digital triggering. PXI-4351 as high-precision temperature and voltage logger includes 8 digital I/O lines (TTL), 16 voltage or 14 thermocouple inputs and autozero and cold-junction compensation and its accuracy can reach 0.12°C for RTDs. PXI-6513 digital I/O card possess optical isolation in banks of 8 channels, 64

sink outputs. This card is a low-cost solution with advanced features for industrial control and manufacturing test applications and it is also a high-reliability industrial feature set. SC-2345 series have connector block and configurable connectors.

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Fig.3. Physical structure of hardware

EuroSun2008-5

Automatic Control System

The whole automation system is mainly divided into two parts: one part is the hardware equipments consisted of all kinds of devices used in the testing system; the other part …

The application of the regulations minimal solar collector area

Following the new regulations, a three bedrooms autonomous zone must have a minimal collector area of 4 m2 independently of the climate zone were is located. From the simulations results …

Measured sequences used for validation purposes

The comparison of experimental and calculated instantaneous power results, obtained after the different approaches presented in the previous section, is based on instantaneous efficiency measurements for a CPC collector (C …

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