SU1394187A1 - Seismoreceiver - Google Patents

Description

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on the inductance coil 13, included in the LC circuit of the HF-av-i generator, the coil 13 being suspended on a conical spring 14, which provides a soft elastic characteristic of the suspension, and is located in it. connections dvz cone-shaped parts 15 and 16 of the core, one 15 of which is made of magneto87

dielectric, and the other 16 - from a non-magnetic conductor. Such an embodiment of the core provides a high coefficient of conversion of the displacement to the frequency of the output signal while simultaneously increasing the uniformity of its characteristics, 1 h, Pf, 3 sg.

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The invention relates to seismic prospecting and signaling of low-frequency, seismic disturbances in the sensor installation area, ensuring the direct conversion of input signals into a high-frequency signal of variable frequency.

The purpose of the invention is improving sensitivity and noise immunity.

FIG. 1 shows a seismic receiver, a section along the axis of symmetry in FIG. 2 is a section A-A in FIG. 1; in fig. 3 is equivalent to the seismic receiver scheme.

The seismic receiver contains a high-direct non-magnetic case 1, a main dielectric sleeve 2 with guides 3 for an additional dielectric bushing 4 in which transitional contacts 5 are pressed,

A module 6 of a high-frequency (HF) oscillator, made on plate 7 and clamped between the sleeve 5 and the frame 8 due to their threaded connection, is placed in the sleeve 4.

Module 6 is connected via contacts 9 and 10, conductors 11 and 12 of cylindrical inductance coil 13 placed on frame 8. The assembly of elements 5–13 serves as the inertial mass of the Seismic receiver and rests on spring 14, with coil 13 located approximately in the middle of the magnetodielectric interface rod 15 and non-magnetic conductive rod 16 forming the core of the coil, and the rod 16 is part of the housing 1.

The inertial mass formed by elements 5–13 is connected with a soft wire spiral 17 by means of transition contacts 18 to output conductors 19–21 of a seismic receiver, which are sealed into a sealed lead 22 of an elastic dielectric. The contacts 17 are pressed into the sleeve 23, which is bonded to the main sleeve 2 with a screw 24 o. The sleeve 2 is pressed against the housing 1 through the sealing washer 25 by a ring 26

seismic receiver. and in the grooves of the ring 26 clamped 27 with the help of screws 28 elements 19-22. To simplify the penetration of the seismic receiver into the ground, a conical body is attached to housing 1.

Pin 29. The complexity of the przokins 14 is chosen in such a way that, in the absence of seismic disturbances, the force of its opposition counteracts the force of gravity of the inertial body on average

the position of the interface between the elements 15 and 16 relative to the coil 13; the free movement of the inertial body relative to the rods 15 and 16 is provided by gaps between the core and the skeleton 8 of the coil, as well as between the sleeves 2 and 4. The guide 3 serves to limit the displacement of the inertial body from axes of the shovel receiver and provide a minimum coefficient of friction between the sleeves 2 and 4. The movement of the inertial body around the circumference is limited by the special design of the projections 3 and recesses 30 in the sleeves -2 and 4, respectively (figure 2),

It is advisable to use for the manufacture of sleeves 2 and 4 material with a low coefficient of friction (for example, fluoroplastic). V

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Claims (2)

Claim 1. A seismic receiver containing a housing, an inertial mass in the form of a frame with an inductor, a spring suspension and a core, characterized in that, in order to increase sensitivity and noise immunity, the seismic receiver 15, a high-frequency self-oscillator is attached that is attached to the inductor and electrically connected to it, the core is made up of a magneto-dielectric and non-magnetic conductive rod, the interface of which is located at the mid-height of the inductor, and the rods are made in the form of coaxial identically oriented truncated cones facing large bases to the inductor. 2. The seismic receiver according to claim 1, characterized in that the elastic suspension is made in the form of a conical spiral spring located between the inductor and the end of the core. Aa