SU1125573A1 - Program device for controlling seismic signal source - Google Patents

Abstract

SOFTWARE DEVICE FOR CONTROLLING A SOURCE OF SEISMIC SIGNALS, containing a clock pulse generator, the output of which is connected to the counting input of the time counter and the inputs of the main and auxiliary frequency converters, the mode switch, the first code of which is connected to the installation, the second to the control inputs of the reverse counter, the counting input which is connected to the output of the auxiliary frequency converter, and the output with the control input of the main frequency converter, the output of which The output of the counter is connected to the first input of the comparison circuit, the second input of which is connected to the third output of the mode switch, and the output to the fault inputs of the counting circuits, characterized in that, in order to expand it (} the functional capabilities, an electronic key is entered , two memory blocks, with the first output of the mode switch connected to the first and the memory block inputs, the third output to the second input of the first memory block, the fourth right from the control input (L electronic key, fifth output - the third input of the first memory block, the first outputs of the memory blocks are connected to the inputs of the electronic key, the output of which is connected to the input of the auxiliary frequency converter, the second output of the first memory block is connected to the second input of the second memory block, the third input of which is connected to the output of the counter .

Description

The invention relates to seismic exploration, in particular, to control systems of one or a group of non-explosive sources with programmed variation of the oscillation frequency, and the knife to be used in seismic surveys both at sea and on land. A software device for controlling a seismic source is known. ; From waves, consisting of a clock pulse generator of a constant frequency, the output of which is connected to the input of a pulse-sequence converter into a gyr from one side through a frequency converter On the other hand, the output of the clock generator through a step-down frequency divider is connected to the counting input of the counter TAK tovol and lylcov5 which is bit connected to the control “1 inputs of the frequency converter .lj. However, the device does not provide for the possibility to set within wide limits both the initial and the final frequencies of the scan range and the choice of the direction of the linear frequency variation. The closest in technical essence to the proposed device is a software device for controlling a seismic wave source containing a clock generator of sh-shul.s whose output is connected to the counting input of a time counter and the inputs of the main and auxiliary frequency converters, a mode switch, the first output of which is connected to the second one with the control inputs to the reversible counter, the input of which is connected to the output of the auxiliary frequency converter, and the output to the control one The main frequency converter, the output of which is connected to the device output, the counter output is connected to the first input of the comparison circuit, the second input of which connects to the third input will switch the modes, and the output - with: reject inputs with a frequency that is recommended to be used at Рцб25 Hz, and at PU - 35 Hz it is most expedient to use signals with a linearly varying period - the prevailing frequency in the spectrum of a single pulse depends From the construction of seismic wave sources. The purpose of the invention is to expand the functionality, i.e. : creation of a software device for controlling a source of seismic waves, working with signals with both a linearly varying frequency and a linearly varying period of control signals. The goal is achieved by the fact that a software device for controlling a source of seismic signals, containing a clock pulse generator, the output of which is connected to the counting counter input. Time and the inputs of the main and auxiliary frequency converters, mode switch, the first output of which is connected to the installation one, the second one the control inputs of the reverse of the counter, the counting input of which is connected to the code of the auxiliary frequency converter, and the output from the control input of the main frequency diverter, the output of which is connected to the output of the device, the output of the counter is connected to the first input of the comparison circuit, the second input of which is connected to the third switch of the mode switch, and the output - To the reset inputs of the counting circuits, an electronic key5 is inserted into it, the first output of the mode switch is connected to the first inputs of blocks pa m ate the third output to the second input of the first memory block, the fourth output to the control input of the electronic key, the fifth output to the third input of the first memory block ti, the first memory block outputs are connected to inputs of an electronic key, whose output is connected to the input of the auxiliary frequency converter, the second output of the first memory block coupled to a second input of the second memory block the third input of which is connected to the output of the counter .. FIG. 1 shows the structural scheme of the proposed device; FIG. 2 and 3 are timing diagrams of operation in a mode with linearly varying frequency and period of the output signal, respectively. The device contains a clock generator 1 pulses, the output of which is connected through the main frequency converter 2 to the output of the device to the counting input of time counter 3 and to the auxiliary 4 frequency npeo6pa3OBate, to the installation inputs j of which the output of the electronic switch 5 is connected, switching the outputs of the first 6 and second 7 blocks the control signal from the third output of the switch 8, the first code-o output of the switch of 8 modes is connected to the setup input of the reversible counter 9. In the initial state, the switch the mode is set to the first inputs of the first 6 and second 7 memory blocks, the second code output of the switch 8 modes is connected to the control input of the reversible counter, the third g to the second input of the comparison circuit Yu and 20 to the second input of the first memory block 6, the fourth to the control electronic key 5, fifth to the third input of the first memory block 6, the first I outputs of the first 6 and second 7 memory blocks are connected to the inputs of the electronic key 5, the output of which is connected to the input of the auxiliary frequency converter 4, the second output first 6 b flash memory JQ is connected to the second input of the second block memory 7, the output of counter 3 is connected to the input of the comparison circuit 10 and the third input of the second memory unit 7. FIG. Figure 2 shows timing diagrams 11-13 at the outputs of blocks 10.1 and 4, respectively, with a linearly varying frequency of the output signal; FIG. 3 shows timing diagrams 14-16 at the outputs of the same units in a mode with a linearly varying period of the output signal. In a mode with a linearly varying period of the output signal at the output of converter 4, pulses with a constant time interval 0-1, 1-2, ... n-1 are followed by a frequency F ,, F, ... F determined by dividing ratio K, acting on the control inputs of the auxiliary 4 frequency converter from the output of the second memory block 7 through the key 5. When operating with a linearly varying output pulse frequency, the output frequency is Wi bFhou Ab time kschi rav times sig times ness - the initial frequency of the device. A, & F is the sweep frequency range, T is the sweep duration. Corresponding (1) period follows the Ritz When working with linearly varying iodine following the output impulses, n (Y – G, (4) –iAh ”och RNOCh,. P corresponding (4) frequency of the following impulses ,, 6t At time points ir 1 , 2, ..., n, one frequency has the value of / FHaw e / FHa., If you approximate the change function of the frequency (6) with linear parities corresponding to certain variable intervals, then the ratio of these linear sections, determine the rate of increase of the function (6) , n. 1 / P. p. "" h ifFna.B l / PH "4 B au4" -1) eJ The device works as follows. Upon the command of the Start transmitted to the radio channel, the output of the comparison circuit 10 is changed, which decides the passage of pulses from the clock to the counters of the program device. At the same time, the initial frequency code is recorded, after which the first output of the setting device 8 mode (switch in primary 5: application materials) to the reversible counter 9. At the output of the 4 frequency converter in the first mode (Fig. 2), pulses with a constant for the selected mode of frequency following the constant division factor, wllfK via electronic key 5 from the first output of the first memory block 6 to the control inputs of the auxiliary 15 frequency converter These and:; The pulses of 5 hp. on the counting input of the reversible counter 9, linearly in time, change the value of the output code of the reversing shear 9, the frequency of 20 output pulses of the output signal linearly depends on the applied to the control inputs-BASIC converter 2 of the frequency of the output of the reversible counter and In accordance with this, the code also changes linearly. According to the current set from the second code output of the setpoint adjuster 8 of the period Bpeyseim mode of operation T, the comparison circuit sends a reset signal to the perceiving elements of the software ycTpoftciBaj g "e" to the main 2 and BSE; o main 4 frequency converters, time counter 3, reversible counter 9 ;. prohibit the filing and number of pulses on. program-iHoro device to carry:: .rash, and the device in its original state 1g8a

In the second mode, (3) control, the inputs of the auxiliary transducer - -) l 4 clock streams are connected via an electro-key 5 to the output of the second memory block 7. The output code of the second block (depends on the parameters of the specified mode & p, T, is determined by the coefficient B, which is sent to the second group of address inputs of the second memory block 7, from the value of the encoder, the output from the first code start of the mode dial 8 to the third grlshpu address inputs of the second memory block, from the time period that passed since the Start, which is determined by the exit code of the counter 3 time, goes to the first group of address inputs of the second memory block 7. Since the parameters uF, T nf are CONSTANT-V. for one of the sweep period, the output code of the second block 7 changes only depending on the bridge - on the change in the output code of the counter. 3 times, In correspondence with izyuzhuyennym, on the timeline (Fig. "2) it is shown that co. response to a certain code of the striker 3 times, the output frequency and the frequency of the auxiliary frequency converter 4 are constant and determined by the code of the second memory block 7 received through the electronic switch 5 to the control inputs of the auxiliary frequency converter A Output The frequency of the iguls of the software device is measured in time along a piecewise linear path, and the coefficients of these linear sections are specified by the second memory block 7.

The device allows to improve the quality of seismic information, to increase the resolution of seismic information using the control according to a definite law for sources operating with different values of frequency conversion in the spectrum of the excited pulse, determined by the frequency of the 1I source.

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Claims (1)

SOFTWARE DEVICE FOR SEISMIC SIGNALS SOURCE CONTROL, containing a clock pulse generator, the output of which is connected to the counting input of the time counter and the inputs of the main and auxiliary frequency converters, a mode switch, the first output of which is connected to the installation, the second - with the control inputs of the reverse counter, the counting input of which connected to the output of the auxiliary frequency converter, and the output to the control input of the main frequency converter, the output of which is connected to the output of the device, the output of the counter is connected to the first input of the comparison circuit, the second input of which is connected to the third output of the mode switch, and the output is by the reset inputs of the conversion circuits, characterized in that, in order to expand its functionality, an electronic key is inserted into it, two blocks memory, while the first output of the mode switch is connected to the first inputs of the memory blocks, the third output is with the second input of the first memory block, the fourth is the fourth output with the control input f of the electronic key, the fifth output is with the third during the first memory block, the first outputs of the memory blocks are connected to the inputs of the electronic key, the output of which is connected to the input of the auxiliary frequency converter, the second output of the first memory block is connected to the second input of the second memory block, the third input of which is connected to the counter output. UZSWT> frequency converter by the input of the sequence converter to the function, on the other hand