CN104297795B - A kind of aircraft black box based on impedance analysis detection experimental provision and method - Google Patents
A kind of aircraft black box based on impedance analysis detection experimental provision and method Download PDFInfo
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Abstract
The invention discloses a kind of aircraft black box based on impedance analysis detection experimental provision and method；The experimental provision of the present invention is made up of aircraft black box beacon analog transmissions assembly (301) and aircraft black box beacon impedance analysis probe assembly (302).The present invention is directed to the beacon of aircraft black box overboard after can send the feature of ultrasonic signal, devise a kind of aircraft black box based on impedance analysis detection experimental provision and method, it is scanned to the frequency near reciever horn 37.5KHz by impedance analysis, utilize the resonance principle of the 37.5KHz signal that reciever horn receives by swept-frequency signal and Piezoelectric Impedance, the search to ultrasonic beacon can be completed, ultrasonic beacon can be found in short time, substantially increase search efficiency, this experimental provision has completed laboratory test, obtain good experiment effect, experiment shows, this kind of experimental provision and method, can be completely used for the detection of the aircraft black box after airplane falling sea water.
Description
Technical field
The present invention relates to a kind of aircraft black box based on impedance analysis detection experimental provision and method, particularly relate to aircraft black box
Detection Techniques field.
Background technology
When submarine target sound source is detected, searches and positioned, acoustic array typically need to be set, according to the length of system location baseline
The difference of degree, can be divided into Long baselines battle array, short baseline battle array and ultra-short baseline battle array.The common feature of these systems is that baseline is longer, super
The length of short baseline, also close to 10 meters, needs bigger operating platform, and operating distance is short, and the reception equipment of signal processing is complicated.
Document " portable underwater acoustic marker Detection location equipment and technology ", describes the group of portable acoustic beacon Detection location equipment
Become and operation principle, use frequency mixing technique the signal of 37.5KHz is amplified and identifies.
Said method use basic fundamental be the 37.5KHz ultrasonic signal that aircraft black box beacon is sent after overboard carry out directly or
Indirectly amplify, owing to, while amplifying 37.5KHz signal, also other signal can be amplified, cause that erroneous judgement often occurs
Situation.
Summary of the invention
The present invention is according to practical application request, for the frequency of marine animal sounding the most not near 37.5KHz, and aircraft black box
The feature of 37.5KHz ultrasonic signal can be sent after sub beacon is overboard, devise a kind of aircraft black box based on impedance analysis and visit
Detection experiment apparatus and method, be scanned to the frequency near reciever horn 37.5KHz by impedance analysis, and utilization is swept
Frequently the resonance principle of the 37.5KHz signal that reciever horn is received by signal and Piezoelectric Impedance, can complete ultrasonic beacon
Search, can find ultrasonic beacon, complete the location to ultrasonic beacon, substantially increase search efficiency in the short time, this experiment fills
Putting and complete laboratory test, obtained good experiment effect, experiment shows, this kind of experimental provision and method are the most permissible
Aircraft black box detection after airplane falling sea water.
The present invention solves its technical problem and the technical scheme is that
A kind of aircraft black box based on impedance analysis detection experimental provision by aircraft black box beacon analog transmissions assembly (301) and
Aircraft black box beacon impedance analysis probe assembly (302) forms.
Aircraft black box beacon analog transmissions assembly (301) is by trumpet type signal launching carrier (2), signal generator (4), position
Put the medium (7) in regulating rod 2 (6), experiment container, experiment container (8), wire a (91), wire b (92), piezoelectricity
Potsherd 2 (11), conductive silver glue 1 (14), radially rubber ring 1 (15), support 1 (16), trip bolt 1 (17), footpath
Form to rubber ring 3 (22).During test, opening signal generator (4), the frequency of signal generator (4) is transferred to 37.5KHz,
So, piezoelectric ceramic piece 2 (11), under the excitation of 37.5KHz signal, drives trumpet type signal launching carrier (2) vibration,
The 37.5KHz signal that simulated aircraft black box beacon is sent.
Aircraft black box beacon impedance analysis probe assembly (302) by trumpet type signal received vector (1), electric impedance analyzer (3),
Medium (7) in position adjustments rod 1 (5), experiment container, experiment container (8), wire c (93), wire d (94), pressure
Electroceramics sheet 1 (10), conductive silver glue 2 (18), radially rubber ring 2 (19), support 2 (20), trip bolt 2 (21),
Radially rubber ring 4 (24) composition.During test, open electric impedance analyzer (3), with electric impedance analyzer (3) to piezoelectric ceramic piece
1 (10) frequency sweep carrying out 37.4KHz～37.6KHz frequency range, owing to piezoelectric ceramic piece 1 (10) is to be pasted onto trumpet type signal to connect
Recording on body (1), trumpet type signal received vector (1) is amplified by the 37.5KHz signal being transmitted through aqueous medium,
Meanwhile, the Piezoelectric Impedance value utilizing electric impedance analyzer to test has the feature being similar to simultaneous resonance, can find piezoelectric ceramic piece in time
The resistance value of 1 (10) has significant change at 37.5KHz, thus finds the 37.5KHz letter that simulated aircraft black box is sent
Number.
The present invention, compared with background technology, has the beneficial effect that
Aircraft black box beacon analog transmissions assembly (301) simulate aircraft black box beacon overboard after the ultrasonic 37.5KHz that sends
Signal.At the trial, opening signal generator (4), the frequency of signal generator (4) is transferred to 37.5KHz, so, pressure
Electroceramics sheet 2 (11), under the excitation of 37.5KHz signal, drives trumpet type signal launching carrier (2) vibration, simulated aircraft
The 37.5KHz signal sent after black box beacon is overboard.
Aircraft black box beacon impedance analysis probe assembly (302) can find aircraft black box beacon analog transmissions assembly (301)
The 37.5KHz signal sent.During test, open electric impedance analyzer (3), with electric impedance analyzer (3) to piezoelectric ceramic piece 1 (10)
Carry out the frequency sweep of 37.4KHz～37.6KHz frequency range, owing to piezoelectric ceramic piece 1 (10) is to be pasted onto trumpet type signal received vector
(1), on, trumpet type signal received vector (1) is amplified by the 37.5KHz signal being transmitted through aqueous medium, meanwhile,
The Piezoelectric Impedance value utilizing electric impedance analyzer to test has the feature being similar to simultaneous resonance, can find piezoelectric ceramic piece 1 (10) in time
Resistance value at 37.5KHz, have significant change, thus find the 37.5KHz signal that simulated aircraft black box is sent.
As shown in Figure 4, No. 60 curves are black boxes beacon analog transmissions assembly (301) when not working, impedance analysis probe assembly
(302) curve measured by；No. 61 curves are that black box beacon analog transmissions assembly (301) is launched 37.5kHz in water and surpassed
Curve during sound wave, measured by impedance analysis probe assembly (302)；As seen from Figure 4, when black box beacon analog transmissions
When assembly (301) launches 37.5kHz ultrasound wave in water, the curve measured by impedance analysis probe assembly (302) and black box
When sub-beacon analog transmissions assembly (301) does not work, the curve measured by impedance analysis probe assembly (302) has significantly
Difference, thus can be determined that black box beacon analog transmissions assembly (301) is in hunting zone.
Therefore the present invention can simulate aircraft black box beacon overboard after the ultrasonic 37.5KHz signal that sends, again can be black by aircraft
Case beacon impedance analysis probe assembly (302) can find the 37.5KHz that aircraft black box beacon analog transmissions assembly (301) sends
Signal.The present invention is that the design of aircraft black box survey meter provides experimental basis, simultaneously also for detect it by impedance analysis method
Its submerged body provides experimental provision and method.
Accompanying drawing explanation
The present invention will be further described with example below in conjunction with the accompanying drawings.
Fig. 1 is the fundamental diagram of the present invention.
Fig. 2 is the explosive view of the aircraft black box beacon analog transmissions assembly of the present invention.
Fig. 3 is the impedance analysis probe assembly assembly explosive view of the present invention.
Fig. 4 is the experimental result picture of the present invention.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, in, as shown in the figure: 1. trumpet type signal received vector, 2. trumpet type signal launch
In carrier, 3. electric impedance analyzer, 4. signal generator, 5. position adjustments rod 1,6. position adjustments rod 2,7. experiment container
Medium, 8. experiment container, 91. wire a, 92. wire b, 93. wire c, 94. wire d, 10, piezoelectric ceramic piece 1,11.
Piezoelectric ceramic piece 2,12. received vector hole, 13. launching carrier holes, 14. conductive silver glues 1,15. radially rubber ring 1,16.
Frame 1,17. trip bolt 1,18. conductive silver glue 2,19. radially rubber ring 2,20. support 2,21. trip bolt 2,22.
Radially rubber ring 3,23. bracket holes 1 (23), 24. radially rubber ring 4,25. bracket holes 2,26. support endoporus 1,27.
Frame endoporus 2,28. radially rubber ring 5,29. radially rubber ring 6.
Detailed description of the invention
As shown in Figure 1,2,3, 4, a kind of aircraft black box based on impedance analysis detection experimental provision is by aircraft black box beacon
Analog transmissions assembly (301) and aircraft black box beacon impedance analysis probe assembly (302) composition.
Described black box beacon analog transmissions assembly (301) by trumpet type signal launching carrier (2), signal generator (4),
Aqueous medium (7) in position adjustments rod 2 (6), experiment container, experiment container (8), wire a (91), wire b (92),
Piezoelectric ceramic piece 2 (11), conductive silver glue 1 (14), radially rubber ring 1 (15), support 1 (16), trip bolt 1 (17),
Radially rubber ring 3 (22) composition；Launching carrier hole (13), support 1 (16) is had on trumpet type signal launching carrier (2)
On have bracket holes 1 (23) and support endoporus 1 (26)；The lower end of support 1 (16) is stuck in trumpet type signal launching carrier (2)
On, and fixed by trip bolt 1 (17), the upper end of support 1 (16) is sliding to be contained on position regulating rod 2 (6)；Footpath
Being arranged on launching carrier hole (13) to rubber ring 1 (15), radially rubber ring 5 (28) is arranged on support endoporus 1 (26)
On, radially rubber ring 3 (22) is arranged on bracket holes 1 (23)；One end of wire a (91) is welded on piezoelectric ceramic piece 2
(11), on positive pole, the other end of wire a (91) is each passed through the radially endoporus of rubber ring 1 (15), radially rubber ring 5
(28) endoporus of endoporus, radially rubber ring 3 (22), is connected with the positive pole of signal generator (4)；Wire b (92)
One end be welded on the negative pole of piezoelectric ceramic piece 2 (11), the other end of wire b (92) is each passed through radially rubber ring 1 (15)
Endoporus, the endoporus of the radially endoporus of rubber ring 5 (28), radially rubber ring 3 (22), negative with signal generator (4)
Pole is connected；
Described impedance analysis probe assembly (302) is adjusted by trumpet type signal received vector (1), electric impedance analyzer (3), position
Aqueous medium (7) in joint rod 1 (5), experiment container, experiment container (8), wire c (93), wire d (94), piezoelectricity pottery
Ceramics 1 (10), conductive silver glue 2 (18), radially rubber ring 2 (19), support 2 (20), trip bolt 2 (21), radially
Rubber ring 4 (24) forms；Have received vector hole (12) on trumpet type signal received vector (1), support 2 (20) is opened
There are bracket holes 2 (25) and support endoporus 2 (27)；The lower end of support 2 (20) is to be stuck in trumpet type signal received vector (1)
On, and fixed by trip bolt 2 (21), the upper end of support 2 (20) is sliding to be contained on position regulating rod 1 (5)；
Radially rubber ring 2 (19) is arranged on received vector hole (12), and radially rubber ring 4 (24) is arranged on bracket holes 2 (25)
On, radially rubber ring 6 (29) is mounted on support endoporus 2 (27)；One end of wire c (93) is welded on piezoelectricity pottery
On the positive pole of ceramics 1 (10), the other end of wire c (93) is through the radially endoporus of rubber ring 2 (19), radially rubber ring
The endoporus of the endoporus of 6 (29), radially rubber ring 4 (24), is connected with the positive pole of electric impedance analyzer (3)；Wire d (94)
One end, be welded on the negative pole of piezoelectric ceramic piece 1 (10), the other end of wire d (94) is through radially rubber ring 2 (19)
Endoporus, the endoporus of the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24), negative with electric impedance analyzer (3)
Pole is connected.
The material of trumpet type signal launching carrier (2) of described experimental provision is corrosion-resistant material niobium tantalum alloy.
The material of trumpet type signal received vector (1) of described experimental provision is corrosion-resistant material niobium tantalum alloy.
As shown in Figure 1,2,3, 4, the experimental technique of a kind of black box based on impedance analysis detection, the experiment of this experimental technique
Device is by aircraft black box beacon analog transmissions assembly (301) and aircraft black box beacon impedance analysis probe assembly (302) group
Become.
Described experimental provision is made up of black box beacon analog transmissions assembly (301) and impedance analysis probe assembly (302)；
Black box beacon analog transmissions assembly (301) is by trumpet type signal launching carrier (2), signal generator (4), position adjustments rod
(6), the aqueous medium in experiment container (7), experiment container (8), wire a (91), wire b (92), piezoelectric ceramic piece 2
(11), conductive silver glue (14), radially rubber ring (15), support 1 (16), trip bolt (17), radially rubber ring (22)
Composition；Have launching carrier hole (13) on trumpet type signal launching carrier (2), support 1 (16) has bracket holes (23)
With support endoporus (26)；The lower end of support 1 (16) is to be stuck on trumpet type signal launching carrier (2), and by fastening spiral shell
Nail (17) is fixed, and the upper end of support 1 (16) is sliding to be contained on position regulating rod 2 (6)；Radially rubber ring 1 (15)
Being mounted on launching carrier hole (13), radially rubber ring 5 (28) is mounted on support endoporus 1 (26), radially
Rubber ring 3 (22) is mounted on bracket holes 1 (23)；One end of wire a (91) is welded to piezoelectric ceramic piece 2
(11), on positive pole, the other end of wire a (91) is the endoporus through radial direction rubber ring 1 (15), radially rubber ring 5 (28)
Endoporus, the endoporus of radially rubber ring 3 (22), be connected with the positive pole of signal generator (4)；The one of wire b (92)
End is welded on the negative pole of piezoelectric ceramic piece 2 (11), and the other end of wire b (92) is through radial direction rubber ring 1 (15)
Endoporus, the endoporus of the radially endoporus of rubber ring 5 (28), radially rubber ring 3 (22), negative with signal generator (4)
Pole is connected, it is characterised in that: during test, opening signal generator (4), the frequency of signal generator (4) is transferred to 37.5KHz,
Make piezoelectric ceramic piece 2 (11) under the excitation of 37.5KHz signal, drive the trumpet type signal launching carrier in aqueous medium
(2) vibration, and 37.5KHz ultrasonic signal is passed to aqueous medium, thus simulated aircraft black box beacon is overboard is sent afterwards
37.5KHz signal；Described impedance analysis probe assembly (302) by trumpet type signal received vector (1), electric impedance analyzer (3),
Aqueous medium (7) in position adjustments rod 1 (5), experiment container, experiment container (8), wire c (93), wire d (94),
Piezoelectric ceramic piece 1 (10), conductive silver glue 2 (18), radially rubber ring 2 (19), support 2 (20), trip bolt 2 (21),
Radially rubber ring 4 (24) composition；Received vector hole (12), support 2 (20) is had on trumpet type signal received vector (1)
On have bracket holes 2 (25) and support endoporus 2 (27)；The lower end of support 2 (20) is to be stuck in trumpet type signal received vector
(1) on, and being fixed by trip bolt 2 (21), the upper end of support 2 (20) is sliding is contained in position regulating rod 1 (5)
On；Radially rubber ring 2 (19) is mounted on received vector hole (12), and radially rubber ring 4 (24) is mounted in support
On hole 2 (25), radially rubber ring 6 (29) is mounted on support endoporus 2 (27)；One end of wire c (93)
Being welded on the positive pole of piezoelectric ceramic piece 1 (10), the other end of wire c (93) is through radial direction rubber ring 2 (19)
The endoporus of endoporus, the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24), with the positive pole of electric impedance analyzer (3)
It is connected；One end of wire d (94) is welded on the negative pole of piezoelectric ceramic piece 1 (10), the other end of wire d (94)
It is the endoporus of the endoporus through radial direction rubber ring 2 (19), the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24),
It is connected with the negative pole of electric impedance analyzer (3)；During test, open electric impedance analyzer (3), with electric impedance analyzer (3) to pressure
Electroceramics sheet 1 (10) carries out the frequency sweep of 37.4KHz～37.6KHz frequency range, owing to piezoelectric ceramic piece 1 (10) is to be pasted onto loudspeaker
In type signal received vector (1), trumpet type signal received vector (1) is believed by the 37.5KHz being transmitted through aqueous medium
Number being amplified, meanwhile, the Piezoelectric Impedance value utilizing electric impedance analyzer to test has the characteristic being similar to simultaneous resonance, sends out in time
The resistance value of existing piezoelectric ceramic piece 1 (10) graphic change (such as Fig. 4) at 37.5KHz, thus find that simulating black case exists
The 37.5KHz signal sent in water, and then find black box beacon analog transmissions assembly (301).
Trumpet type signal launching carrier (2) of the experimental technique of described a kind of based on impedance analysis black box detection experimental provision
Material be corrosion-resistant material niobium tantalum alloy.
Trumpet type signal received vector (1) of the experimental technique of described a kind of based on impedance analysis black box detection experimental provision
Material be corrosion-resistant material niobium tantalum alloy.
Claims (6)
1. black box based on an impedance analysis detection experimental provision, this experimental provision is by black box beacon analog transmissions assembly (301)
Form with impedance analysis probe assembly (302), it is characterised in that: black box beacon analog transmissions assembly (301) is by loudspeaker
Aqueous medium (7) in type signal launching carrier (2), signal generator (4), position adjustments rod 2 (6), experiment container,
Experiment container (8), wire a (91), wire b (92), piezoelectric ceramic piece 2 (11), conductive silver glue 1 (14), radially
Rubber ring 1 (15), support 1 (16), trip bolt 1 (17), radially rubber ring 3 (22) composition；Trumpet type signal
Have launching carrier hole (13) on launching carrier (2), support 1 (16) has bracket holes 1 (23) and support endoporus
1(26)；The lower end of support 1 (16) is stuck on trumpet type signal launching carrier (2), and by trip bolt 1 (17)
Being fixed, the upper end of support 1 (16) is sliding to be contained on position regulating rod 2 (6)；Radially rubber ring 1 (15) is installed
On launching carrier hole (13), radially rubber ring 5 (28) is arranged on support endoporus 1 (26), radially rubber ring 3
(22) it is arranged on bracket holes 1 (23)；One end of wire a (91) is welded on the positive pole of piezoelectric ceramic piece 2 (11)
On, the other end of wire a (91) is each passed through the radial direction endoporus of rubber ring 1 (15), radially rubber ring 5 (28)
The endoporus of endoporus, radially rubber ring 3 (22), is connected with the positive pole of signal generator (4)；The one of wire b (92)
End is welded on the negative pole of piezoelectric ceramic piece 2 (11), and the other end of wire b (92) is each passed through radially rubber ring 1 (15)
Endoporus, the endoporus of the radially endoporus of rubber ring 5 (28), radially rubber ring 3 (22), with signal generator (4)
Negative pole is connected；Impedance analysis probe assembly (302) by trumpet type signal received vector (1), electric impedance analyzer (3),
Aqueous medium (7) in position adjustments rod 1 (5), experiment container, experiment container (8), wire c (93), wire d (94),
Piezoelectric ceramic piece 1 (10), conductive silver glue 2 (18), radially rubber ring 2 (19), support 2 (20), trip bolt 2 (21),
Radially rubber ring 4 (24) composition；Received vector hole (12), support 2 (20) is had on trumpet type signal received vector (1)
On have bracket holes 2 (25) and support endoporus 2 (27)；The lower end of support 2 (20) is to be stuck in trumpet type signal to receive load
On body (1), and being fixed by trip bolt 2 (21), the upper end of support 2 (20) is sliding is contained in position regulating rod 1
(5) on；Radially rubber ring 2 (19) is arranged on received vector hole (12), and radially rubber ring 4 (24) is arranged on and props up
In frame aperture 2 (25), radially rubber ring 6 (29) is mounted on support endoporus 2 (27)；The one of wire c (93)
End is welded on the positive pole of piezoelectric ceramic piece 1 (10), and the other end of wire c (93) is through radially rubber ring 2 (19)
Endoporus, the endoporus of the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24), with electric impedance analyzer (3)
Positive pole is connected；One end of wire d (94), is welded on the negative pole of piezoelectric ceramic piece 1 (10), wire d (94)
The other end through the radially endoporus of rubber ring 2 (19), the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24)
Endoporus, be connected with the negative pole of electric impedance analyzer (3).
A kind of black box based on impedance analysis the most according to claim 1 detection experimental provision, it is characterised in that: trumpet type is believed
The material of number launching carrier (2) is corrosion-resistant material niobium tantalum alloy.
A kind of black box based on impedance analysis the most according to claim 1 detection experimental provision, it is characterised in that: trumpet type is believed
The material of number received vector (1) is corrosion-resistant material niobium tantalum alloy.
4. an experimental technique for black box based on impedance analysis detection, the experimental provision of this experimental technique is sent out by the simulation of black box beacon
Penetrate assembly (301) and impedance analysis probe assembly (302) composition；Black box beacon analog transmissions assembly (301) is by loudspeaker
Type signal launching carrier (2), signal generator (4), position adjustments rod (6), experiment container in aqueous medium (7),
Experiment container (8), wire a (91), wire b (92), piezoelectric ceramic piece 2 (11), conductive silver glue (14), radially
Rubber ring (15), support (16), trip bolt (17), radially rubber ring (22) composition；Trumpet type signal launches load
Have launching carrier hole (13) on body (2), support (16) has bracket holes (23) and support endoporus (26)；?
The lower end of frame (16) is to be stuck on trumpet type signal launching carrier (2), and is fixed by trip bolt (17),
The upper end of support (16) is sliding to be contained on position regulating rod 2 (6)；Radially rubber ring 1 (15) is mounted in launching carrier
On hole (13), radially rubber ring 5 (28) is mounted on support endoporus 1 (26), radially rubber ring 3 (22)
It is mounted on bracket holes 1 (23)；One end of wire a (91) is welded to the positive pole of piezoelectric ceramic piece 2 (11)
On, the other end of wire a (91) is the endoporus through radial direction rubber ring 1 (15), radially rubber ring 5 (28) is interior
The endoporus in hole, radially rubber ring 3 (22), is connected with the positive pole of signal generator (4)；One end of wire b (92)
Being welded on the negative pole of piezoelectric ceramic piece 2 (11), the other end of wire b (92) is through radial direction rubber ring 1 (15)
Endoporus, the endoporus of the radially endoporus of rubber ring 5 (28), radially rubber ring 3 (22), with signal generator (4)
Negative pole is connected, it is characterised in that: during test, opening signal generator (4), the frequency of signal generator (4) is adjusted
To 37.5KHz so that piezoelectric ceramic piece 2 (11), under the excitation of 37.5KHz signal, drives the loudspeaker in aqueous medium
Type signal launching carrier (2) vibrates, and 37.5KHz ultrasonic signal is passed to aqueous medium, thus simulated aircraft black box is believed
The 37.5KHz signal sent after the water of village；Impedance analysis probe assembly (302) by trumpet type signal received vector (1),
Aqueous medium (7) in electric impedance analyzer (3), position adjustments rod 1 (5), experiment container, experiment container (8), wire c
(93), wire d (94), piezoelectric ceramic piece 1 (10), conductive silver glue 2 (18), radially rubber ring 2 (19), support
2 (20), trip bolt 2 (21), radially rubber ring 4 (24) composition；Have on trumpet type signal received vector (1)
Received vector hole (12), support 2 (20) has bracket holes 2 (25) and support endoporus 2 (27)；Support 2 (20)
Lower end be to be stuck on trumpet type signal received vector (1), and fixed by trip bolt 2 (21), support 2
(20) upper end is sliding to be contained on position regulating rod 1 (5)；Radially rubber ring 2 (19) is mounted in received vector hole (12)
On, radially rubber ring 4 (24) is mounted on bracket holes 2 (25), and radially rubber ring 6 (29) is mounted in
On support endoporus 2 (27)；One end of wire c (93) is welded on the positive pole of piezoelectric ceramic piece 1 (10), leads
The other end of line c (93) is the endoporus through radial direction rubber ring 2 (19), the radially endoporus of rubber ring 6 (29), footpath
To the endoporus of rubber ring 4 (24), it is connected with the positive pole of electric impedance analyzer (3)；One end of wire d (94) is welding
On the negative pole of piezoelectric ceramic piece 1 (10), the other end of wire d (94) is interior through radial direction rubber ring 2 (19)
The endoporus in hole, the radially endoporus of rubber ring 6 (29), radially rubber ring 4 (24), with the negative pole of electric impedance analyzer (3)
It is connected；During test, open electric impedance analyzer (3), with electric impedance analyzer (3), piezoelectric ceramic piece 1 (10) is carried out
The frequency sweep of 37.4KHz～37.6KHz frequency range, owing to piezoelectric ceramic piece 1 (10) is to be pasted onto trumpet type signal received vector (1)
On, trumpet type signal received vector (1) is amplified by the 37.5KHz signal being transmitted through aqueous medium, meanwhile,
The Piezoelectric Impedance value utilizing electric impedance analyzer to test has the characteristic being similar to simultaneous resonance, finds piezoelectric ceramic piece 1 in time
(10) resistance value graphic change at 37.5KHz, thus find the 37.5KHz that simulating black case is sent in water
Signal, and then find black box beacon analog transmissions assembly (301).
The experimental technique of a kind of black box based on impedance analysis the most according to claim 4 detection, it is characterised in that: trumpet type
The material of signal launching carrier (2) is corrosion-resistant material niobium tantalum alloy.
The experimental technique of a kind of black box based on impedance analysis the most according to claim 4 detection, it is characterised in that: trumpet type
The material of signal received vector (1) is corrosion-resistant material niobium tantalum alloy.
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