| 摘要 |
FIELD: measuring equipment. ^ SUBSTANCE: invention is intended for transformation of vibration into signal of vibration speed, which may be used for measurement and monitoring of controlled object vibration level. Device for measurement of vibration comprises piezoelectric converter, instrumental amplifier and operational amplifier, output of which is device output. Outputs of piezoelectric converter are joined with direct and inverse inputs of instrumental amplifier, the first amplification setting input of which is connected to the first output of the first resistor. Output of operational amplifier is connected to its inverse input via capacitor. Inverse input of operational amplifier is connected via the second resistor to outlet of instrumental amplifier. Direct input of operational amplifier is connected to common busbar. Device comprises inductance, which is connected between the second output of the first resistor and the second input of instrumental amplifier amplification setting, and the third resistor is connected parallel to capacitor. Direct and inverse inputs of instrumental amplifier may be connected to common busbar via the first and second auxiliary resistors. ^ EFFECT: expanded dynamic range and improved validity of measurements. ^ 6 cl, 6 dwg |
