Patent ID: 6753772
Filing Date: 2004-06-22
Classification: G08C

Abstract:
A method for detecting and digitally transmitting measured analog output values of a number of transducers to a protection or field device, in whichthe measured analog output values of each transducer are converted into measured digital values at a sampling rate which is higher by a factor than the minimum sampling rate and are transmitted, the factor being an integer divider of the number of the filter coefficients of in each case one FIR filter with filter coefficients of the value 1 in a data concentrator for each transducer, the measured digital values are transmitted as a message to a data concentrator, data are transferred from buffers associated with each transducer with a clock rate into post-buffers preceding the FIR filters, the clock being formed from the synchronous character of the respective message and the fixed clock of a clock generator, and in the data concentrator, a transmit message with measured digital values of the transducers with reduced sampling rate is formed from output buffers following the FIR filters by means of a multiplexer, and the transmit message is transmitted to the protection or field device.