GEAR TO MEASURE VIBRATION DISPLACEMENT Russian patent published in 2000 - IPC

FIELD: vibration measuring technology. SUBSTANCE: invention can find use in test and diagnosis of rotor equipment. Gear includes vibration converter 1, amplifier 11, low-pass filter 2, high- pass filter 12, integrator 3, amplifier 4, high-pass filter 4, integrator 5, high-pass filter 6 and amplifier 7 connected in series. Detector 8 of root-mean-square signal, analog- to-digital converter 9 and indication unit 10 connected in series and analog-to-digital converter 14, spectrum analyzer 15 and display 16 connected in series are connected to output of amplifier 7. Vibration converter 1 is accelerometer with amplitude characteristic having linear section that exceeds maximum amplitude of random impact action and with amplitude-frequency characteristic having uniform section that exceeds third harmonic of frequency of impact action. High-pass filters 12 and 13 placed across inputs of integrators 3 and 5 have phase-frequency characteristic and high-pass filter 6 located across output of integrator 5 has maximum damping factor in stop band. Gear operates normally under action of random impacts and provides for measurement of low-frequency displacement of low level as well as spectral analysis of measured vibration displacement which enhances authenticity of test and diagnostics. EFFECT: enhanced authenticity of test and diagnostics. 1 dwg