SU506818A1 - Device for automatic detection of time shifts between extremes of oscillations - Google Patents

Description

(54) DEVICE FOR AUTOMATIC DETERMINATION OF TEMPORARY SHIFTS BETWEEN EXTRACTUAL VIBRATIONS

circuits 13 and 14, command unit 15, matching unit 16, storage unit 17 and input 18 of the sign bit, routes I and II, oscillation extremes (pulses a – e}).

To clarify the principle of operation of the proposed device, we will visually correlate the wave pattern presented in FIG. 1. The most reliable temporal correlation occurs if the impulse on route I is identified with the impulse in on route II, and the impulse r on route I with the impulse e on route II, since the time shifts between the specified extremes are less than the time shifts between other pairs of extremes. In accordance with this, in order to isolate the waves according to kinematic features, it is necessary to determine the time shifts between extremes of the paired alternating paths, select the smallest of them, and transfer the received data to a memory device for subsequent analysis.

Seismic vibrations are read from the mag tape tape, amplified and formed by blocks 1 and 2, then by the first and second counters 3 and 4, having the same number of L bits, are determined as the oscillations arrive and t between the extremes of vibrations on route I, for example , impulses a and the nearest impulses b and b on route II, respectively, a and Na, c. Further, between the next extremum on route I, for example, impulses r and the nearest impulses in to d on route II, respectively, d and d.

The first counter 3 determines the values of dt formed by pairs of pulses, in which the first pulse follows track II, for example, a and Sts, -, and the second counter 4 determines which first pulses follow trace I, for example, and 64, d (Fig. 1). The output of the first counter 3 is connected to the first register 5 of the intermediate memory, 1 output of the second counter 4 to the second register 6. Accordingly, the values a and b / c, d will successively appear in the first register 5, and the values in and ,, d - in the second register 6.

The shifts b / d in the forward and inverse images from the first and second registers 5 and 6, respectively, through the first and second bit matching schemes 7 and 8, by resolution from the command unit 15, fall on the A-bit adder 9.

In this order of summation, a transfer pulse is obtained after a higher bit only if there is a smaller number in the reverse image.

The senior cell of the adder 9 is connected to the input of the control element 12, and its forward and reverse outputs are connected to the inputs of the first and second key circuits 13 and 14, the second inputs of which are connected to the command unit 15.

When a transfer pulse appears at the output of the adder 9 (in accordance with Fig. 2

,, a) the control element 12 measures the initial state to the opposite and, through the key circuit 14, outputs the enabling potential to the second AND resolution read block for converting the values of b / from the second register 6 through the matching block 16 to the storage block 17.

In the reverse state of (,, a), the transfer sign does not appear, in the control

element 12 produces a command according to which the read permission is transmitted through the first key circuit 13 to the first read permission block 10, and to the memory block 17 from the first register 5

through the matching unit 16, a smaller number is transmitted again, and Thus, in the storage unit 17 for subsequent processing, only the smaller ' time shifts are found.

The following times are compared in accordance with FIG. 2 time shifts between extremes in E g, g c d, the value of the smaller of them is also transmitted to the storage unit.

In case of equality of shifts, for example, a 54, b, etc., the transfer is not formed; accordingly, the value 8t is transmitted to the storage unit 17 by resolution through the first key circuit 13 from the first register 5.

To determine the order of the pulses (sign b), the output of the second key circuit 14 is additionally connected to the input 18 by the sign bit of the storage unit 17.

If a read permission from register 6 is formed in the second key circuit 14, then this is indicated by a sign in the sign bit of block 17. If the read permission is formed in the first key circuit 13, then the sign bit state remains initial.

The order of filling the values of the first and second counters 3 and 4 of the first and second registers 5 and 6, respectively, is predetermined, and therefore, the change in the initial state of the sign bit of the storage unit 17 corresponds to the fact that in the second register 6 smaller values, c, d, impulse and ahead of impulse b,

and the impulse g is ahead of the impulse d. If the initial state of the sign bit of block 17 remains unchanged, the values are minimal, a, a, g, therefore, the impulses a b c following the route P, the pulses a and g on highway I.

Claims (1)

Invention Formula A device for automatically detecting time shifts between extremes of oscillations, comprising read resolution blocks, a counter for time shifts of extremes, controlling, matching and storing blocks, characterized in that. in order to increase the accuracy of automatic determination of the minimum time shifts between extremes, intermediate memory registers are entered into it, the outputs of which are connected in parallel to the inputs of the adder and read resolution blocks, the output of the adder is connected to the input of the control a block connected via forward and reverse outputs via key circuits with read resolution blocks that are connected to a storage unit via a matching unit, and the output of one of the key circuits is also connected to the input of the sign bit of the storage unit. L