A distributed data acquisition and analysis system based on a CAN bus

A distributed remote-control system for large nuclear physical setups is intended to collect, store, and analyze data arriving from detecting devices and to visualize them via the WEB. The system uses the CAN industrial data transmission network and the DeviceNet high-level protocol. The hardware part is the set of controllers, which convert signals of the detecting devices into a frequency and transmit them in the digital form via the CAN network to the host computer. The software realizes the DeviceNet protocol stack, which ensures the data acquisition and transmission. The user interface is based on dynamic WEB pages. Server scripts carry out their formation and graphical visualization of data. The system is used for monitoring dark noises of photomultiplier tubes in the BOREXINO neutrino detector (Italy).