Abstract:
This paper describes the implementation of a distributed data acquisition network based on the 80C592 microcontroller from Intel. Each station is connected in an hierarch...Show MoreMetadata
Abstract:
This paper describes the implementation of a distributed data acquisition network based on the 80C592 microcontroller from Intel. Each station is connected in an hierarchical way to form a tree topology. The lower level network stations, designated by slaves, are dedicate to the data acquisition and the generation of control signals. The upper level, masters, are responsible for the communications control. Both networks use a CAN (controller area network) bus, for data transfer, and the global network is also connected to a PC, via a CAN. A device router, NetManager, was implemented to support total intrinsic requirements at the communication level. This type of connection allows total configuration from a personal computer, PC, which runs a software application developed for Windows(TM) environments. The tests performed at the laboratory, with transmission rates varying from 40 kbits/s to 1 Mbits/s, showed that the communications were performed without errors for cable lengths of 1100 m to 40 m, respectively. This system is now being installed in a set of environmental chambers and greenhouses located on a Portuguese university campus, where it will monitor and control air temperatures and humidities, CO/sub 2/ and ammonia concentrations and the radiation level.
Date of Conference: 07-11 July 1997
Date Added to IEEE Xplore: 06 August 2002
Print ISBN:0-7803-3936-3
Citations are not available for this document.
Cites in Patents (1)Patent Links Provided by 1790 Analytics
1.
Itoi, Makoto, "NETWORK COMMUNICATION APPARATUS"
Inventors:
Itoi, Makoto
Abstract:
Provided is a network communication apparatus that is capable of, even when each node to be connected is undefined, managing a connection state of the node with ease. The network communication apparatus includes at least one node connected to a network and a management node that manages each of the at least one node. Each of the at least one node includes a data transmission and reception unit for transmitting and receiving data containing an ID field giving contents of the data and a data field giving an entity of the data, and an analyzing unit for analyzing meanings of the ID field and a data field of received data. The management node collects attribute information from each of the at least one node, and assigns and gives a node ID number to each of the at least one node based on the collected attribute information.
Assignee:
MITSUBISHI DENKI KK
Filing Date:
04 September 2003
Grant Date:
24 February 2009
Patent Classes:
Current U.S. Class:
370254000, 710010000, 710104000
Current International Class:
H04L0122800