SU409169A1 - DEVICE FOR REGISTRATION OF EXTREME SEASMIC SIGNAL - Google Patents

Description

one

The invention relates to the field of seismic exploration and can be used to depict the results of processing geophysical data.

A device for recording seismic vibrations is known, containing seismic signals, a high frequency generator, a threshold device and an electronic key. A disadvantage of this device is that at large amplitudes of the oscillating current, the superimposed shaded partial half-periods are mutually superimposed, which makes it difficult to determine the extremes for which the seismic signals are correlated.

In order to improve the correlation of seismic signals, the preliminary device contains an adder, one input of which is connected with an electric key, and another is connected to an external source.

On fng. 1 shows a block diagram of the device.

The device contains a source of seismic signals /, adder 2, a threshold device 3, a single vibrator 4, an electronic switch 5, a generator of high-frequency oscillations 6, an electron-beam receiver 7.

The device works as follows.

Seismic signals from the source / are fed simultaneously to one of the inputs of the adder 2 and to the threshold device 3, in which nmnulse is generated at the time the signal passes through the extremum point. The horn device makes it possible to mark the extremes of only those signals that exceed the predetermined level of limbs. The front of the device 3 pulse is triggered by the output selector 4, which produces a square pulse, the duration of which is sui.1., Of course, less than the most high-frequency seismic oscillations. The imulse detector is opened by an electron switch 5, which transmits high-frequency oscillations from generator 6. High-frequency oscillations and a second 2 adder input are summed in it with seismic signals.

The total signals registered by a cathode ray tube are shown on the FNG. 2

Subject and purpose of

A device for recording extremums of a seismic signal, containing a source of seismic signals, a recorder, a high frequency generator, a threshold device, an oscillator, an electronic key, characterized in that, in order to improve the accuracy, an adder is connected between the electrofluor key and the source of signals, the output of which is connected to the regulator .