SU1471084A1 - Instrument for measuring vibration parameters - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to expand the measurement range and increase the reliability of the device by simplifying and ensuring its operability with small signals at the output of the speed vibration sensor. A device for measuring vibration parameters contains a vibration velocity sensor 1, the signal from the output of which is proportional to the vibration velocity of the measured oscillations is fed to the first switch 2, the integrating amplifier 5 and the second driver 8. The output from the integrating amplifier 5 proportional to the vibration of the measured oscillations is fed to the second key 6 and the first driver 4. The pulses from the outputs of the first and second drivers 4.8 turn on the first and second keys 2.6, respectively, at the times when the voltage at the inputs of the generator 4.8 changes its sign from minus to plus. In this case, the first memory block 3 records a value proportional to the amplitude value of the vibration velocity, and the second memory block 7 is proportional to the amplitude value of the vibration displacement. 1 il.

Description

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The invention relates to a measurement technique and can be used to measure vibration parameters.

The aim of the invention is to expand the measurement range and increase the reliability of the device by simplifying the device and ensuring its operability with small signals at the output of the speed vibration sensor.

The drawing shows the FZ Ksionalna device diagram.

A device for measuring vibration parameters comprises a vibration velocity sensor connected in series, a first key 2 and a first memory block, a first driver 4, the output of which is connected to the control input of the first key 2, connected in series to an integrating amplifier 5, the output of which is connected to the input of the first driver 4, the second key 6 and the second memory block 7, the second driver 8, the input of which is connected to the output of the vibration sensor 1 speed and the input of the integrating amplifier 5, and the output - to the control input of the second key 6.

The device works as follows.

Mechanical oscillations x (t), changing, for example, according to the harmonic law x (t) A-sincot, where A is the amplitude of vibration displacements; co - oscillation frequency, converted to. an electrical signal of the vibration sensor 1, at the output of which a voltage is formed and proportional to the vibration velocity of the measured oscillations in the form i, p K, Acocosu) t, where K is the proportionality coefficient. The voltage U ;, from the output of the vibration sensor 1 is fed to the inputs of the first switch 2, the integrating amplifier 5 and the second driver 8,

At the output of the integrating amplifier 5, a voltage Vj is formed, which is proportional to the vibration displacement in the form i-g. K / A-sinwt (t), where CD is the proportionality coefficient. The voltage and / 1 is fed to the input of the first driver 4 and the input of the second key 6 ,.

The first driver 4 and the second driver 8 form positive pulses and 3 and and +, respectively, at the moments of polarity change

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voltages at their inputs from negative to positive. Positive pulses and go to the control input of the first key 2, and positive pulses and - to the control input of the second key 6.

The pulses from the output of the first driver 4 turn on the first switch 2 at times when the voltage U, j changes its sign from minus to plus. At the same time, the amplitude value of voltage U, equal to and proportional to the amplitude value of vibration velocity, arrives at the input of the first memory block 3. The first memory block 3 records the amplitude value of the voltage U.

The pulses from the output of the second driver 8 turn on the second key 6 at the moments in the change of the sign of the voltage Ui from minus to plus. In this case, the second memory block 7 fixes the amplitude value of voltage II, j, which is equal to and proportional to the amplitude value of the vibration displacement.

Thus, the use of new connections in the device allows not only to provide high performance measurements and to use the proposed device when measuring fast-response rates in terms of frequency and amplitude of oscillations, as well as a sensor of amplitude values of vibration velocity and vibration displacement, but also to significantly simplify the device. the most reliable and cost-effective.

Formula of invention

The device; for measuring vibration parameters, comprising a speed vibration sensor, a first key connected in series and a first memory unit, a first driver, the output of which is connected, a control input of the first key, a sequentially connected integrating amplifier, a second key and a second memory block, The second driver, the input of which is connected to the output of the speed vibration sensor, is connected to the control input of the second key, which is different from the fact that, in order to extend the measurement range and increase the reliability of the device -keeping, the vibration pickup is connected to the output speed

- 1471084

the input of the first key and the input is integrated with the input of the first formatter; its amplifier, the output of which is a pad.

Claims (1)

Claim Device — For measuring vibration parameters, comprising a speed vibration sensor, a first key and a first memory unit connected in series, a first driver, the output of which is connected to a control input of the first key, an integrating amplifier, a second key and a second memory module, a second driver, connected in series, the input of which is connected to the output of the speed sensor, the output is connected to the control input of the second key, which is characterized by the fact that, in order to expand the measurement range, and increase the reliability of the device , the output of the speed sensor is connected to the input of the first key of the amplifying amplifier, and the input is integrally connected to the input of the first driver of which.