FIELD: measurement.
SUBSTANCE: invention relates to testing and calibration of measuring devices, namely embedded string sensors of monitoring systems of massive reinforced concrete structures, in particular, hydro-electric stations and nuclear power stations. Method includes periodic measurement of the logarithmic decrement of the output signal and calculation of change in the string weight. Initial value of the logarithmic attenuation decrement of the output signal is removed from an additional model string relative sensor having a resonator identical to the resonators of the controlled sensors. At that, change of string mass is determined by difference of measured values of attenuation decrement of input signal and reference sensor.
EFFECT: technical result is wider field of use and high accuracy of monitoring reliability of readings of embedded string sensors.
1 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MEASURING FORCE IN WORKING REINFORCEMENT BARS OF REINFORCED CONCRETE STRUCTURE | 2009 |
|
RU2389987C1 |
| STRING-TYPE INSTRUMENT TRANSDUCER | 0 |
|
SU1775695A1 |
| COMPLEX OF CONTAINMENT MONITORING SYSTEM OF POWER UNIT OF NUCLEAR POWER PLANT | 2019 |
|
RU2733057C1 |
| METER OF AXIAL FORCES IN TENDONS | 2013 |
|
RU2527129C1 |
| METHOD FOR DEFINITION OF RESONANT FREQUENCY AND DECREMENT OF OSCILLATION DECAY | 2008 |
|
RU2364844C1 |
| METHODS, APPARATUS AND ARTICLES OF MANUFACTURE FOR PROCESSING MEASUREMENTS OF STRINGS VIBRATING IN FLUIDS | 2010 |
|
RU2518861C2 |
| THERMOPHYSICAL PROCESS TO DETERMINE AVERAGE MOLECULAR MASS OF POLYMER SOLUTIONS | 2002 |
|
RU2210763C1 |
| DETECTING ELEMENT OF LINEAR COMPRESSION-TENSION FORCE DETECTOR | 2011 |
|
RU2459188C1 |
| METHOD MEASURING OSCILLATION FREQUENCY OF VIBRATING WIRE TRANSDUCER | 1992 |
|
RU2087877C1 |
| METHOD OF DETERMINING BENDING AND TORSION STRESS COMPONENTS IN REINFORCEMENT RODS | 2019 |
|
RU2704327C1 |
