SU566144A1 - Apparatus for calibrating hydrophones - Google Patents

Description

(54) DEVICE FOR GRANNING A HYDROPHONE

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This is the DSA / Ie by the fact that xcriK-u-ii-s-Gc sol.er: l: „- .. two, switch, four-part node zapog gkn-ga-, DEY of the comparator; two by-pass control, one control and one control block, including: - one output of the block is controlled by: • / hz-: 1T:; / hg helmet - |;: setting-up ;;: 1L. ;; th meizu generator 8 by the first aggsoiser, the first SbM source of control voltage, ang. The first Utega unit is stored to the first attribute recorder, and Egory :: paraswitch:,.; Ushdydnyy between Chyu -sh, and the entrance to the sequence “the second one includes the second a, tte, nuator, sinning the knot of aanok-pshani and, the second istoshshkk gorge, in one form, under the hood, and the second comparator, the inputs of which are assigned knotted hall obiashshs and second pereggzh) chat.: shm.

The drawing shows a structural diagram of the device.

The device contains the HG rgeque 1, the first switch 2, the detector 3, F / v. §4 P4, the second nspeKjffi iaiejjb 5, the fourth memory node b, the control unit, the second memory node 8, engravable padofrok, the first attenuator 10 , cul-organ P., the first comparator 12, the nerve source / right for 1p 13, the first node of the link 14, the second attester 15, the second source of the control voltage 6, the third node of memory; 17, the first comparator 18 ..

The device works slur skinny way.

In the initial position, the generator, 1 through the switch 2 is connected to the radiator 3, and the sensitive element 4 through the switch 5 to the jamming unit b. G1O, signals, lu of the control unit, event 7, memory unit 8, memorizes, ie, the elec- tional force at the input of the graduated hydrophone 9, and memory unit b, the electromotive force output of the sensing element 4. By following from the control unit 7, the generator 1 is connected via switch 2 to the tester 10 and through it to the null organ I, and the sensor element 4 is connected via switch 5 to the comparator 12. By the same sigi control voltage 7 the control voltage source 13 begins to accumulate meas The envelope is wired, which, through the knot for 4, enters 4, enters the control input apega 10, an end-to-end) O {e, introduced by aerohomopom H, 1 ;: the manotone changes to .1 oct, kog. :: G1p: unye at the output of the sensing element

; ; jC with; "5s of the value equal to the memorized node 6.: -,;,: see the comparator 12 gives a signal, by opw,, i 3ft7i memory 14 remembers the value, a -); I ;, controlling the attenuation of the attenuator 10. this excitation voltage of the gulorgan (which also supplies the input to the attenuator 15) remains unchanged. According to the signal of the comparator 12, the source of control voltage 16 Hawcffiiei produces a monotonically varying voltage, which, through the memory node 17

after-lp / goes to the attenuator control input 15. Therefore, the input made by the attenuator 15 will be very close until the moment when 1: 356 at its output becomes equal to zero, at node 8.

0 generates a signal according to which node 17 zamominaet z, t; achev, ae capr of the controller, controlling attenuation of the attenuator 15. Decay introduced by the attenuator, 15, isoproportionally sensitive. NOSH Graduated Hydrophone. If there is a linear dependence of the attenuation of the attenuator 15 on the voltage controlled by it, the voltage at the output of the node 17 is the input voltage of the device. Otherwise, the attenuator 10 should be flooded with a stable voltage source.

0 and its output voltage will be equal to Hbi, M The sensitivity of the graduated magnetic receiver.

Claims (2)

1. Boberber R., Hydroacoustic measurements, Mir publishing house, M. 1974, p. 60-63, 2. Blinov, KP, et al. Acoustic Measurements, Standards Moscow, 1971, p. 210-215.