A CENTRONICS BASED TRANSDUCER INDEPENDENT INTERFACE (TII) FULLY COMPLIANT WITH 1451.2 STD.

Helena Ramos, M. Pereira, V. Viegas, O. Postolache, P. Girão

Abstract

The paper reports the tests conducted on a dedicated Transducer Independent Interface (TII) to check its compliance with standard IEEE 1451.2 specifications. The interface was built using a synchronous data transfer based on the Serial Peripheral Interface (SPI) protocol integrated in a PIC microcontroller used as the Smart Transducer Interface Module (STIM) and the Centronics port of the PC, used as the Network Capable Application Processor (NCAP’s TII port). The description of each line and the connections are also presented.<br />The working prototype of the STIM controlled by a NCAP module was implemented to connect several transducers without communication capabilities used in a water quality monitoring network. The NCAP, also described in the paper, is emulated in a PC and it was fully developed using LabVIEW 6.1.

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IMEKO-TC4-2004-097.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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