Title :
An automatic dynamic response calibration system for high-pressure transducers
Author :
Pan Deheng ; Li Hongian ; Shuguang, Wang
Author_Institution :
Taiyuan Inst. of Machinery, China
Abstract :
An intelligent system for automatic calibration of the dynamic response of high-pressure transducers up to 1 GPa is described. It consists of a quasi-delta-function pulse generator, an A/D converter, a data acquisition system, a DFT (discrete Fourier transform) system and an IBM PC/XT. The shortest time duration of the hydraulic pulse received is 10 μs. The DFT system is designed to finish the response-calibration in less than 60 seconds, print out and store the results, and plot the modulus and phase shift against frequency, if necessary. The sampling rate is variable, the maximum being 20 MHz. The whole system is automated. The response characteristics have a well-defined zero-frequency value which is normalized as the unit value in modulus and zero phase shift. Therefore, dynamic sensitivity calibration can be carried out using the static sensitivity calibration data
Keywords :
calibration; computerised instrumentation; high-pressure techniques; transducers; 1 GPa; 10 mus; 20 MHz; 60 s; A/D converter; DFT; IBM PC/XT; automatic dynamic response calibration; data acquisition; discrete Fourier transform; high-pressure transducers; hydraulic pulse; intelligent system; quasi-delta-function pulse generator; sampling rate 20 MHz; static sensitivity calibration; Calibration; Data acquisition; Discrete Fourier transforms; Electric shock; Frequency; Linear systems; Microcomputers; Microwave integrated circuits; Time factors; Transducers;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1988. IMTC-88. Conference Record., 5th IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/IMTC.1988.10816
