SU1383453A1 - Device for testing molecular-electronic seismic converting elements - Google Patents

Abstract

The invention relates to a measurement technique and allows to increase the accuracy of the tests and to expand the frequency and dynamic range of the specified effects. In the device, the chamber 4, filled with working fluid 5, is closed at one end by a membrane 8. At the other end of chamber 4, there is a transition sleeve 6 providing hydraulic connection of the volume of chamber 4 with the test element 7. The oscillations generated by the piezoelectric element 3 are transmitted through the rod 9 the membrane 8, the movement of which leads to the movement of the liquid 5 relative to the electrodes of the element 7 and the appearance of a predetermined pressure drop. Hard fixing the camera 4 in the housing 1 eliminates the occurrence of interfering signal caused by microseismic interference. The amplitude of the specified effects due to the size of the membrane 8. 1 Il. i (/ S VniZ os os OS 4; el os

Description

; The invention relates to measuring t (hnicke, in particular to molecular-electronic) transducers, and can be used in the production of various kinds of molecular-electronic transducers used in geology, navigation, automatic control systems and control.

The purpose of the invention is to increase the accuracy and expansion of the private and dynamic ranges of specified effects. The drawing shows a schematic depiction of a device for testing molecular electronic seismic transducer elements.

 The device is made in the form of a housing I with a lid 2, in which piezoelectric element 3 is installed, connected to chamber 4 filled with a working fluid 5. As

pji

Barrel fluid can be used

redox electrolyte and polar fluids of electrokinetic converters. Camera 4 rigidly soI7 KF

Dinena with body m 1 and is equipped with a transition-HC1Y bushing 6, on which either the test seismic-conversion element 7 is mounted or the measuring capillary p. The chamber is made of u;} ol oyush, its material, covered with a membrane 8, made of metal with an insulating coating or dielectric. Membrane 8 chambers | are connected by a rod 9 with a movable n; 1 | osh, auxiliary 10 of the Element element 3,

 The electrodes of the piezoelectric element 3 are connected to the output of the master oscillator through 1 G connectors, and the output signal of the molecular electronic converter element is removed from the connector 12.

The adapter sleeve 6, made of a thick-walled rubber tube that is resistant to: the influence of the working fluid 5, provides i hydraulic connection of the disposable transducer with the chamber volume, and also ensures simplicity and convenience: when replacing the converters.

The device for testing, 1 molecule; o-electronic seismic transducer elements, works in the following way.

The calibrated electrical signal is about: from a standard generator to the electrodes of the piezoelectric element 3, made, and- npiHMep, in the form of a bimorph membrane structure. The calibrated displacement of the movable platform 10 of the piezoelectric element 3 is transmitted by means of the pin 9 to the diaphragm 8, the dimensions of which determine the amplitude of the specified influences. Moving the membrane 8 causes movement. working fluid

5 with respect to the electrodes of the seismic rectifying element 7 and the occurrence of a predetermined pressure drop. The output of the conversion element is measured and processed.

Since the camera 4 with the working fluid 5 is rigidly fixed in the housing 1 of the device, microseismic interference does not cause the working fluid 5 to move relative to the electrodes of the test transducer element and the interference signal does not occur, since the rigidity of the membrane is comparable to the rigidity of the piezoelectric element, and their acoustic resistance is the operating frequency range is substantially greater than the hydraulic resistance of the tested seismic transducer element.

This allows us to significantly extend the frequency range in the low-frequency region, reduce the amplitudes of the input effects up to Yu Pa, and also increase the

accuracy of determining the characteristics of these elements. In addition, when mounting a measuring capillary on the transitional bushing using a measuring microscope, the device with high

accuracy.

The piezoelectric element is certified by a laser interferometric method with an accuracy of 1 90 /

1st / o.

The proposed device allows setting the volumetric flow rates of the working fluid M Vc and provides a pressure drop of 10 -10 Pa in the frequency range Hz. The accuracy of the task flow is not more than 3-4%.

3.5

Claims (1)

Invention Formula 40 A device for testing molecules of photon-electronic seismic transducer elements, comprising an external closed housing in which a piezoelectric element with a moving platform, a transducer element and a chamber filled with working fluid, closed at one end with a membrane, are installed, characterized in that, in order to increase accuracy and expand the frequency 2 and the dynamic ranges of the specified effects, a transition sleeve and a stem installed between the membrane and the moving platform of the piezoelectric element are inserted into it, and the transition sleeve on which the conversion element is mounted is 50 spaced from the other end of the chamber, while the camera body is rigidly connected to the outer case.