SU1217320A1 - Apparatus for imitation of sounds - Google Patents

Description

one

The device relates to a commercial fishing technique and is intended to increase the efficiency of the crab fishery by attracting the Kamchatka crab to a fishing instrument with acoustic signals.

The purpose of the invention is the formation of acoustic signals that simulate underwater sounds that attract the Kamchatka crab.

The invention is theoretically based on the fact that the Kamchatka crab reacts not only to the pit sounds of its own species, but also to the imitation of these sounds. The study of food biosignals and numerous experiments made it possible to determine the structure and parameters of the signal, upon emission of which the positive reaction of the king crab appears most clearly.

The period of radiation and the duration of the signal are chosen optimal from the point of view of energy costs and luring effect of radiation. Increasing the duration of the signal and reducing the repetition period increases power consumption and shortens the device operation time without replacing the power batteries. A decrease in the duration of the signal follow-up period and its increase reduces the luring effect of radiation (a positive reaction of the Kambat crab, i.e., the crabs approaching the radiator is less clearly defined)

The factors determining the parameters of the signal emission varied according to the following gradations: the repetition period of the packets Tj, 10 s 20;

217320g

vibrators 1-3, high-frequency generator 4, made in the form of a shock excitation generator, amplifier 5, electro-acoustic; 5 converter 6, power batteries

The device works as follows.

Multivibrators 1–3, which make up the control voltage generator, determine the period of radiation and the structure of the signal, which is a series of pulse trains.

Multivibrator 1 periodically, through 5-20 sr, connects mu; litivibrator 2 to power source 7 (for 0.6-2.5 s.}, Thus setting the radiation period and the duration of the signal.p. Multivibrator 2 sets the following period and the duration of bursts of pulses, connecting multivib30; 40; 55; 70;

pack duration

15; 20; ,

impulse period T ,, 10

with 0.25; 0.33; 0.5; 1.2;

ten

15

20

rarator 3 3-10- -5

to the power source through r2 .. s-about -15

25

thirty

35

1 with 1; five; ten;

- j

40

 10 seconds to 510-1540 - s. Multivibrator 3 sets the period of the pulses, the generator 4 starts periodically after 0, -1.610 s. Generator 4 generates a pulse whose amplitude decays exponentially with a 4-20 damping discrete, and the resonant frequency is 30-50 kHz. The amplifier 5 amplifies the signal in power, and the electro-acoustic transducer 6 from the PZT 19 piezoceramics (ring 38-33-25) emits a signal to the aquatic environment. The intensity of the radiation in this case is 10-100 Pa / m. Battery 7 provides general power to the circuit. The circuit is assembled on a transistor and discrete elements. Together with the converter, this electronic circuit is housed in a tight sealed case (not shown) made of AMg-6 non-core alloy, this allows the loader to a depth of 100 m.

- - j j- - j f (f.f 14 tr .. IK3. dj.jrv / rillj J J.

 Pulse filling frequency, kHz 2.3; 45 / Device enclosed with 10; 20; 40; 50;

damping factor 1; 2; four; 6; eight;

ten.; 20; thirty.

FIG. a structural electrical circuit of the device is given; in fig. 2 - output signal diagrams.

50

The food trays in a robust hermetic case are installed either in traps or over an order of traps in the area of the crab fishery. By attracting crabs from a larger area than when exposed to them

The device consists of a sequence of feed odor only (polluted T, but connected generator control lures, the catch of commercial pressure traps, including multi-traps, is increased.

)

;

217320g

vibrators 1-3, high-frequency generator 4, made in the form of a shock excitation generator, amplifier 5, electro-acoustic; 5 converter 6, power supply batteries.

The device works as follows.

Multivibrators 1–3, which make up the control voltage generator, determine the period of radiation and the structure of the signal, which is a series of pulse trains.

Multivibrator 1 periodically, through 5-20 sr, connects mu; litivibrator 2 to power source 7 (for 0.6-2.5 s.}, Thus setting the radiation period and the duration of the signal.p. Multivibrator 2 sets the following period and the duration of the pulse bursts, plug-in multivib10

15

20

rarator 3 3-10- -5

to the power source through r2 .. s-about -15

25

thirty

35

0;

40

 10 seconds to 510-1540 - s. Multivibrator 3 sets the period of the pulses, the generator 4 starts periodically after 0, -1.610 s. Generator 4 generates a pulse whose amplitude decays exponentially with a 4-20 damping discrete, and the resonant frequency is 30-50 kHz. The amplifier 5 amplifies the signal in power, and the electro-acoustic transducer 6 from the PZT 19 piezoceramics (ring 38-33-25) emits a signal to the aquatic environment. The intensity of the radiation in this case is 10-100 Pa / m. Battery 7 provides general power to the circuit. The circuit is assembled on a transistor and discrete elements. Together with the converter, this electronic circuit is housed in a durable, hermetic case (not shown) made of AMg-6 noncore alloy, which allows the loader to a depth of up to 100 m.

f 14 tr .. IK3. dj.jrv / rillj J J.

3; 45 / Device enclosed with

The food trays in a robust hermetic case are installed either in traps or over an order of traps in the area of the crab fishery. By attracting crabs from a larger area than when exposed to them

T: 0,8 GO- -t6 7O- with

t S TO - 7S- / 0 c

Tt

t

.- "

W ha -f- / ff c

tf, O.ff- 2.5c

Compiled by A. Dmitriev. Editor N. Kigatulin. Tehred A. Ah Corrector L. Patay

Order 1020/3 Circulation 679 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, Proektna St., 4

Ti-5-20c

p1 / g. 2

Claims (1)

DEVICE FOR SIMULATING SOUNDS, containing a high-frequency generator, directly connected to a control voltage generator and through an amplifier with an electro-acoustic transducer, characterized in that, in order to generate acoustic signals imitating underwater sounds that attract Kamchatka crab, a high-frequency generator is made in the form of a shock excitation generator, and the control voltage generator is made in the form of three series-connected multivibrators.