In carries on the conventional electric quantity metering equipment in the verification, takes the verify unit, certainly must to the voltage, the electric current peak-to-peak value, the frequency, the phase and so on carry on the high-accuracy survey, uses TI in the verify unit Corporation DSP component TMS320F206 to control A/D to transform, the data acquisition and digital filtering processing, after and carries on the filter processing data transfer to the microcomputer the data further processing, has realized the high accuracy electric instrument verification request.
Measuring unit composition and function
The measuring unit is takes system’s high accuracy ” the standard table “, must complete to hands over/the DC voltage, the electric current many electric quantity survey, the survey precision is smaller than 0.05 level, the measuring unit adopts inserts the casette design, straight insertion IPC (industrial control microcomputer) in the ISA main line uses. This cellular construction diagram as shown in Figure 1.
