CN205562027U - Two -dimensional vector field hydrophone - Google Patents
Two -dimensional vector field hydrophone Download PDFInfo
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- CN205562027U CN205562027U CN201620379568.3U CN201620379568U CN205562027U CN 205562027 U CN205562027 U CN 205562027U CN 201620379568 U CN201620379568 U CN 201620379568U CN 205562027 U CN205562027 U CN 205562027U
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Abstract
The utility model relates to a two -dimensional vector field hydrophone belongs to hydrophone technical field. Are major -minor atmospheric pressure cabin UNICOM, vice atmospheric pressure cabin (3 installed on the outer top of hydrophone outer sleeve (5) to piezoceramics vibration signal reception reflective membrane (9) 1 )And be equipped with flexible pressure balance piece (2) between water -pressure balance pipe (1), the laser beam shines piezoceramics vibration signal reception reflective membrane (9) back, and its reverberation passes on printing opacity pressure -bearing end cap (12) shines dember effect two -dimensional positioning device (8), obtains the two -dimentional signal of telecommunication, simultaneously, output piezoelectricity signal on the reflective membrane. Send central computer (16) behind two way signal input data processing ECU to and carry out analysis and processing. This two -dimensional vector field hydrophone combination formula array can the discriminating object source be any target, its position of ability analysis, distance to the true and false of ability recognized target. Detective's frequency is wide, and enlarged gain is adjustable, can listen silence moving target under water, has good development potentiality.
Description
Technical field
The present invention relates toOnePlant two-dimensional vector field hydrophone, belong to hydrophone technical field.
Background technology
Hydrophone is transducer underwater signal being converted to the signal of telecommunication.According to the difference of action principle, transduction principle, characteristic and structure etc., have the hydrophones such as acoustic pressure, vibration velocity, undirected, sensing, piezoelectricity, magnetostriction, electronic (moving-coil) point.Hydrophone and microphone have a lot of similarity in principle, performance, but due to the difference of sound bearing medium, hydrophone must have firm watertight structure, and must use the watertight cable etc. of corrosion-resistant material.
Pressure hydrophone detecting underwater acoustic signal and noise sound pressure variations also produce harmony and are pressed into the voltage output of ratio.According to the difference of sensitive material used, pressure hydrophone can be divided into: piezoelectric ceramics pressure hydrophone, PVDF pressure hydrophone, piezo-electricity composite material pressure hydrophone and optical fiber sound pressure hydrophone.
In underwater sound field, mainly include scalar sensors and vector sensor, be also scalar hydrophone and vector hydrophone.In acoustic field, scalar hydrophone (pressure hydrophone), the scalar parameter in sound field can only be measured.Vector hydrophone can measure the vector parameters in sound field, and its application contributes to obtaining the Vector Message of sound field, and the Function Extension of sonar is had extremely crucial meaning.
The simple sound pressure information processing system using the united information of novel compositions sensor (acoustic pressure and vibration velocity associating) to process system more traditional has good anti-coherent interference ability and line-spectrum detection ability；The combination sensor using single little yardstick is processed by allied signal, can be carried out the acoustic pressure of target bearing, vibration velocity Combined estimator, in addition, say from the angle of energy measuring, the employing of vector hydrophone makes the ability of the anti-isotropic noise of system obtain raising, and can realize the multiobject identification in far field etc..The research work of vector hydrophone is greatly paid attention to.Therefore, the multi information detection including Vector Message is a development trend of sonar system, is the most increasingly paid attention to by each big country of naval.
External vector hydrophone technology: the principle being designed with of acoustic vector sensors has electric principle (moving-coil type)；Piezoelectric principle, the most varied, such as utilize the SWALLOW buoyage of the quasi-basic matrix of hydrophone, basic matrix is formed by 8 array elements, 150m the most vertically lays, and working depth is 400～1300m, and analyzing frequency band is 0.6～20Hz, for the infrasonic sound component of ship-radiated noise, the sound pressure measurement high 3～6dB that the ratio of gains of sound intensity signal to noise ratio is simple.Franklin, Barry and the Benjamin vector hydrophone of the U.S. is all to use piezoelectric principle, and wherein, Benjamin utilizes PCB company's T 356B08 type accelerometer to use part integrated circuit technology, and the frequency response of the vector hydrophone made is 100～2000Hz；Sensitivity is 100mV/gn；A size of < 10～20cm.
As can be seen here, the application of vector hydrophone, not only detection information content strengthens, and lowest detection frequency has reached the Infrasonic Frequencies of 0.6Hz, and appearance and size is also more and more less.Along with new technology ground development, no matter scalar hydrophone or vector hydrophone, test (making) method of various sensitive mechanisms has different trials.There is several scalar hydrophone in recent years: as used the underwater sound sensor of pvdf membrane (thickness 1000 μm), it is used for submarine by Britain and Republic of France Navy, it is referred to as Frank's battle array " FlankArrays ", fibre optic hydrophone, the micro-hydrophone of light interference type etc. that the micro-processing technology of Tokyo Univ Japan's report makes, it addition, the report of also MEMS hydrophone, the underwateracoustic field sensor developed such as Boston Univ USA, the laser beam detection sound field reflected by detection is changed.In underwater sound field, Russia takes its place in the front ranks of the world in terms of quiet submarine detection equally, and representational product is piezoelectric vector hydrophone.It is said, the novel sonar laid in Asia-Pacific is a kind of round-the-clock passive type sonar by U.S. army, there is the ability of extremely strong detection mute type submarine, than the active sonar used in the past and intermediate frequency passive type sonar, its detecting distance can reach more than 300nmile, and have and be easier to hidden and positioning precision high (be equipped with inertia/satellite fix and be combined alignment system).Analyze according to " there is the ability of extremely strong detection mute type submarine ", it is most likely that be to use low-frequency test.The intrinsic noise on quiet submarine and naval vessel is all in low-frequency range, and this is accomplished by the vector hydrophone of low-frequency range.I.e. require that detection transducer has low frequency detectability.Low frequency three dimensions omnidirectional vector detector has become new technical need.This low frequency vector hydrophone succeed in developing the test problems that it is expected to solve remotely to propagate low frequency signal.Meanwhile, along with weakening of echo signal, high-sensitivity detection problem also becomes urgent.
Fibre optic hydrophone is the device utilizing optical fiber technology detecting underwater acoustic ripple, it is compared with traditional piezoelectric hydrophone, has high sensitivity, an advantage such as sufficiently large dynamic range, the anti-electromagnetic interference capability of essence, no resistance coupling require, the arbitrariness of system " green end " light weight and structure.The main Military Application of fibre optic hydrophone includes: all-fiber hydrophone towed array, all-fiber seabed acoustic surveillance system (Ariaden plan), the light-duty submarine of all-fiber and the conformal hydrophone array of surface vessel, ultralow frequency optical fiber gradient hydrophone, ambient sea noise and quiet submarine noise testing.The U.S. is currently being deployed on a large scale all-fiber hydrophone array system and the correlation technique thereof of (hundreds of unit).Fibre optic hydrophone and array technique thereof the most worldwide obtain attention and development.
Piezoresistive principles, MEMS technology are applied to the trial that vector hydrophone is a kind of new principle, new method.The micro-structural vector hydrophone using piezoresistive principles can make vector type hydrophone size be miniaturized, and detectivity is better than piezoelectric ceramic type hydrophone, it is adaptable to low frequency measurement, can be used for the detection of quiet submarine.Pass through MEMS technology, it is possible to achieve sensitive detection part and the Integrated design of signal processing circuit, all these scale can complete on chip.On one substrate by sensor, signal processing circuit, actuator integrates, and constitutes microelectromechanical systems.MEMS technology is owing to having 3M feature i.e.: miniaturization, and variation, microelectronics technology makes the development of MEMS technology demonstrate huge vitality.It brings up to new height the miniaturization of information system, multifunction, intelligent and reliability level.Based on array detection, high-performance, the miniaturization target that always engineer applied is pursued.In terms of realization rate, light detection, thin film testing, acousto-optic combine many principles detection method such as detection, array detection and have attempted, and constantly pursue high seeking renovation.
For far field objects detection and stealthy submarine detection, low frequency detection, a development trend of high s/n ratio detection always sonar system.How to realize zero-frequency and high-frequency range, high sensitivity person are unanimously the core technologies that hydrophone is to be solved, additionally, use the array hydrophone of towed easily to be harassed and disturbed by the object in other oceans during using, this is also the defect needing to overcome.
Summary of the invention
It is an object of the invention to provide a kind of two-dimensional vector field hydrophone.
The technical scheme is that the present invention is by hydraulic balance pipe (1), pliable pressure balancing patch (2), secondary air pressure cabin (3-1), main air pressure cabin (3-2), sleeve stretching motor (4), hydrophone outer sleeve (5), hydrophone inner core (6), Dember effect two-dimensional localization device (8), piezoelectric ceramic vibration signal receives reflective membrane (9), air pressure transmission channel (10), lasing light emitter (11), printing opacity pressure-bearing plug (12), battery (13), data process ECU(14), signal filtering device (15), central computer (16) is constituted；
nullPiezoelectric ceramic vibration signal receives reflective membrane (9) and is arranged on the outer end of hydrophone outer sleeve (5)，It is main air pressure cabin (3-2) that piezoelectric ceramic vibration signal receives between reflective membrane (9) and printing opacity pressure-bearing plug (12)，UNICOM is carried out by air pressure transmission channel (10) between this main air pressure cabin (3-2) and secondary air pressure cabin (3-1)，It is provided with pliable pressure balancing patch (2) between secondary air pressure cabin (3-1) and hydraulic balance pipe (1)，It is provided with lasing light emitter (11) in main air pressure cabin (3-2)，The incidence angle that laser beam receives reflective membrane (9) with piezoelectric ceramic vibration signal is θ，θ≠0，The laser beam of reflection enters hydrophone inner core (6) through printing opacity pressure-bearing plug (12) and is irradiated on Dember effect two-dimensional localization device (8)，Coordinate value voltage signal on this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15)，Piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9)，During after processing after filtering, two paths of signals is input to data process ECU，The data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process；Hydrophone inner core (6) is provided with guide groove and tooth bar, above this tooth bar, hole slot offered by hydrophone outer sleeve (5), sleeve stretching motor (4) is installed in the position of this hole slot, the when of this electric machine rotation, the relative position between hydrophone outer sleeve (5) and hydrophone inner core (6) can be changed so that the length of two-dimensional vector field hydrophone (7) changes (seeing Fig. 2).
Piezoelectric ceramic vibration signal receives the acquisition of signal sheet of reflective membrane (9) and is made up of hard anti-corrosion material, it is embedded with piezoelectric ceramic piece, by having, resilient flexible material is fixing with the outer end of hydrophone outer sleeve (5) to be connected acquisition of signal sheet, and it is reflective mirror that piezoelectric ceramic vibration signal receives the acquisition of signal sheet back side of reflective membrane (9).
Two-dimensional vector field hydrophone (7) uses piezoelectric ceramic vibration signal to receive reflective membrane (9) and obtains the signal two paths of signals that piezoelectric ceramic vibration signal is obtained with red times positioning devices, coordinate value voltage signal on piezoelectric ceramic vibration signal and this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15), piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9), during after processing after filtering, two paths of signals is input to data process ECU, the data processed are delivered to central computer (16) by unified.
The operation principle of the present invention is to utilize light to reflex to the two-dimensional localization signal that Dember effect two-dimensional device produces, and realizes two-dimensional signal collection and analysis in combination with piezoelectric ceramics signal.Piezoelectric ceramic vibration signal receives reflective membrane (9) and is arranged on the outer end of hydrophone outer sleeve (5), to bear huge hydraulic pressure under water.nullIt is main air pressure cabin (3-2) that piezoelectric ceramic vibration signal receives between reflective membrane (9) and printing opacity pressure-bearing plug (12)，UNICOM is carried out by air pressure transmission channel (10) between this main air pressure cabin (3-2) and secondary air pressure cabin (3-1)，It is provided with pliable pressure balancing patch (2) between secondary air pressure cabin (3-1) and hydraulic balance pipe (1)，Hydraulic balance pipe (1) bears huge hydraulic pressure too，Hydraulic pressure is by hydraulic balance pipe (1) extruding pliable pressure balancing patch (2)，Secondary air pressure cabin (3-1) pressure-air of pliable pressure balancing patch (2) compression，By air pressure transmission channel (10) pressure transmission to main air pressure cabin (3-2)，Make the pressure of winner's pressure chamber room (3-2) equal to extraneous hydraulic pressure，Ensure that piezoelectric ceramic vibration signal receives reflective membrane (9) and is in optimum Working，When two-dimensional vector field hydrophone is arranged array，Each signal source just constitutes a single vector field，All of signal source is combined and is just constituted a two-dimensional vector field，After analyzing，We just can differentiate that we say the signal source orientation intercepted、The power of signal source and frequency.
Piezoelectric ceramic vibration signal receives the acquisition of signal sheet of reflective membrane (9) and is made up of hard anti-corrosion material, it is embedded with piezoelectric ceramic piece, by having, resilient flexible material is fixing with the outer end of hydrophone outer sleeve (5) to be connected acquisition of signal sheet, and it is reflective mirror that piezoelectric ceramic vibration signal receives the acquisition of signal sheet back side of reflective membrane (9).
nullIt is provided with lasing light emitter (11) in main air pressure cabin (3-2)，The incidence angle that laser beam receives reflective membrane (9) with piezoelectric ceramic vibration signal is θ，θ≠0，The laser beam of reflection enters hydrophone inner core (6) through printing opacity pressure-bearing plug (12) and is irradiated on Dember effect two-dimensional localization device (8)，When with the presence of signal when，The position of reflective spot can change，Constitute two dimension voltage signal，Coordinate value voltage signal on this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15)，Piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9)，During after processing after filtering, two paths of signals is input to data process ECU，The data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process；
Hydrophone inner core (6) is provided with guide groove and tooth bar, above this tooth bar, hole slot offered by hydrophone outer sleeve (5), sleeve stretching motor (4) is installed in the position of this hole slot, the when of this electric machine rotation, the relative position between hydrophone outer sleeve (5) and hydrophone inner core (6) can be changed, the length making two-dimensional vector field hydrophone (7) changes, gain amplifier is adjustable, the when of tensile elongation, the multiplication factor of signal strengthens, otherwise reducing the length of sleeve, this multiplication factor reduces.
Two-dimensional vector field hydrophone (7) uses piezoelectric ceramic vibration signal to receive reflective membrane (9) can obtain two kinds of signals, the frequency response of two class signals is different, piezoelectric ceramics is the sensitiveest for higher-order of oscillation response, and signal that red times positioning devices is obtained is the sensitiveest to the response of low frequency, particularly have good detecting effect to the most weak LF-response, both are used in combination the scope that can be greatly expanded look-in frequency.
In concrete detection process, can use array combination, see Fig. 3, such as submarine array combination is shown in Figure 4.Coordinate value voltage signal on piezoelectric ceramic vibration signal and this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15), piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9), during after processing after filtering, two paths of signals is input to data process ECU, the data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process, finally we can obtain target signal source is what kind of submarine actually, and the distance and bearing of this submarine.
Its workflow is as shown in Figure 6.The two class signals that two-dimensional vector field hydrophone (7) receives are after A/D changes, constitute the vector field data of two dimension, each vector field also coordinates a piezoelectric ceramics signal, these signals are filtered out background noise by a digital filter apparatus, then these valuable signals are pre-processed and extract vector field feature, these two-dimensional vector field (as shown in Figure 5) digital information is stored in two-dimensional vector field information database, if able to determine target model, then these information will constitute one and can the template data of comparison be labeled, then persistence.But these data templates are during constantly accumulation, just constitute a huge basic data, for data analysis, just there is the database on basis.When we detect a new target, these data can be carried out interactive query, compares with the data of two-dimensional vector field information database, if the match is successful, then we are it is known which target is the target that we are detected be actually.If database does not has, according to those data existing for former database, it is that computer can analyze actually for which kind of target.Due to the special nature of two-dimensional vector field, we can judge distance and the orientation of target exactly.In the information coordinating piezoelectric transducer to be obtained, we can also differentiate the true and false of target.Because the signal of each vector signal and piezoelectric ceramics is to occur in pairs, when we at input database when, these two groups of signals have an inseparable matching relationship, utilize the existence of this relation, it is possible to identify the true and false of target.Such as, when a target, playback when, piezoelectric ceramics can differentiate that this target exists, but for the vibrations of low frequency, its low frequency signal does not exists, more precisely, two paths of signals cannot mate.From the point of view of from principle, the invention belongs to the hydrophone of passive type, the variation in water pressure of zero frequency can be detected, the feature of the extremely low frequency shown for quiet moving object under water has good detecting effect, in conjunction with piezoceramic transducer, submarine target can be detected and do not say the highest extremely high frequency underwater sound sent.
After all signal sources that this hydrophone array is obtained are collected and are analyzed by computer, it is possible to differentiate that target source is any target, its orientation, distance can be analyzed, and the true and false of target can be identified.
The invention has the beneficial effects as follows:This is that a kind of brand-new box-like array of two-dimensional vector field hydrophone, group can differentiate that target source is any target, can analyze its orientation, distance, and can identify the true and false of target.Having splendid sensitivity, detecting frequency scope is wide, can detect zero frequency, and gain amplifier is adjustable, can detect the most quiet mobile target, have good development potentiality.
Accompanying drawing explanation
Fig. 1 is two-dimensional localization device architecture schematic diagram；
Fig. 2 is cross-sectional view of the present invention；
Fig. 3 is two-dimensional vector field hydrophone riding position schematic diagram；
Fig. 4 is the apparent position schematic diagram that two-dimensional vector field hydrophone is placed to submarine；
Fig. 5 is T moment two-dimensional vector field schematic diagram；
Fig. 6 is course of work schematic diagram of the present invention；
Fig. 7 is AT89C52 single chip machine controlling circuit；
Fig. 8 is 8051 single chip machine controlling circuits.
Figure is respectively numbered: 1. hydraulic balance pipe, 2. pliable pressure balancing patch, 3-1. pair air pressure cabin, 3-2. main air pressure cabin, 4. sleeve stretching motor, 5. hydrophone outer sleeve, 6. hydrophone inner core, 7. two-dimensional vector field hydrophone, 8. Dember effect two-dimensional localization device, 9. piezoelectric ceramic vibration signal receives reflective membrane, 10. air pressure transmission channel, 11. lasing light emitters, 12. printing opacity pressure-bearing plugs, 13. batteries, 14. data process ECU, 15. signal filtering devices, 16. central computers, 17. red times framing signal lines, 18. piezoelectric ceramic vibration holding wires.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the invention will be further described, but present disclosure is not limited to described scope.
Embodiment 1: the technical scheme is that the present invention is by hydraulic balance pipe (1), pliable pressure balancing patch (2), secondary air pressure cabin (3-1), main air pressure cabin (3-2), sleeve stretching motor (4), hydrophone outer sleeve (5), hydrophone inner core (6), Dember effect two-dimensional localization device (8), piezoelectric ceramic vibration signal receives reflective membrane (9), air pressure transmission channel (10), lasing light emitter (11), printing opacity pressure-bearing plug (12), battery (13), data process ECU(14), signal filtering device (15), central computer (16) is constituted；
nullPiezoelectric ceramic vibration signal receives reflective membrane (9) and is arranged on the outer end of hydrophone outer sleeve (5)，It is main air pressure cabin (3-2) that piezoelectric ceramic vibration signal receives between reflective membrane (9) and printing opacity pressure-bearing plug (12)，UNICOM is carried out by air pressure transmission channel (10) between this main air pressure cabin (3-2) and secondary air pressure cabin (3-1)，It is provided with pliable pressure balancing patch (2) between secondary air pressure cabin (3-1) and hydraulic balance pipe (1)，It is provided with lasing light emitter (11) in main air pressure cabin (3-2)，The incidence angle that laser beam receives reflective membrane (9) with piezoelectric ceramic vibration signal is θ，θ≠0，The laser beam of reflection enters hydrophone inner core (6) through printing opacity pressure-bearing plug (12) and is irradiated on Dember effect two-dimensional localization device (8)，Coordinate value voltage signal on this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15)，Piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9)，During after processing after filtering, two paths of signals is input to data process ECU，The data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process；Hydrophone inner core (6) is provided with guide groove and tooth bar, above this tooth bar, hole slot offered by hydrophone outer sleeve (5), sleeve stretching motor (4) is installed in the position of this hole slot, the when of this electric machine rotation, the relative position between hydrophone outer sleeve (5) and hydrophone inner core (6) can be changed so that the length of two-dimensional vector field hydrophone (7) changes (seeing Fig. 2).
Piezoelectric ceramic vibration signal receives the acquisition of signal sheet of reflective membrane (9) and is made up of hard anti-corrosion material, it is embedded with piezoelectric ceramic piece, by having, resilient flexible material is fixing with the outer end of hydrophone outer sleeve (5) to be connected acquisition of signal sheet, and it is reflective mirror that piezoelectric ceramic vibration signal receives the acquisition of signal sheet back side of reflective membrane (9).
Two-dimensional vector field hydrophone (7) uses piezoelectric ceramic vibration signal to receive reflective membrane (9) and obtains the signal two paths of signals that piezoelectric ceramic vibration signal is obtained with red times positioning devices, coordinate value voltage signal on piezoelectric ceramic vibration signal and this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15), piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9), during after processing after filtering, two paths of signals is input to data process ECU, the data processed are delivered to central computer (16) by unified.
Utilize Dember effect two-dimensional localization device (15) to two dimension luminous point information gathering and identification, two dimension light dot information is processed by single-chip microcomputer, by the state by key flag currently two dimension luminous point information gathering, typing state, identification state, removing state, can show the status information of current two dimension luminous point information gathering identification with liquid crystal 1602；With relay, current information is judged, such as, remind current two dimension light dot information identification mistake；Buzzer and LED etc. is utilized to remind current two dimension light dot information to identify whether correctly.As shown in Figure 7.
Dember effect two-dimensional localization device (15) gathers two dimension light dot information, then with the Freescale X128 single-chip microcomputer of 16, two dimension luminous point digital information is pre-processed, then two dimension luminous point information data is sent in STC89C52 single-chip microcomputer, one piece of liquid crystal 1602 is connected with STC89C52 single-chip microcomputer, liquid crystal is used for showing the information of the duty of current two dimension luminous point information acquisition system and rear two dimension luminous point information gathering by contrast the most correctly, and the two-dimentional light dot information indicating current collection by a buzzer and LED light is correct.When the two-dimentional light dot information collected is correct, and buzzer sends sound and LED light is lighted.
Embodiment 2: the technical scheme is that the present invention is by hydraulic balance pipe (1), pliable pressure balancing patch (2), secondary air pressure cabin (3-1), main air pressure cabin (3-2), sleeve stretching motor (4), hydrophone outer sleeve (5), hydrophone inner core (6), Dember effect two-dimensional localization device (8), piezoelectric ceramic vibration signal receives reflective membrane (9), air pressure transmission channel (10), lasing light emitter (11), printing opacity pressure-bearing plug (12), battery (13), data process ECU(14), signal filtering device (15), central computer (16) is constituted；
nullPiezoelectric ceramic vibration signal receives reflective membrane (9) and is arranged on the outer end of hydrophone outer sleeve (5)，It is main air pressure cabin (3-2) that piezoelectric ceramic vibration signal receives between reflective membrane (9) and printing opacity pressure-bearing plug (12)，UNICOM is carried out by air pressure transmission channel (10) between this main air pressure cabin (3-2) and secondary air pressure cabin (3-1)，It is provided with pliable pressure balancing patch (2) between secondary air pressure cabin (3-1) and hydraulic balance pipe (1)，It is provided with lasing light emitter (11) in main air pressure cabin (3-2)，The incidence angle that laser beam receives reflective membrane (9) with piezoelectric ceramic vibration signal is θ，θ≠0，The laser beam of reflection enters hydrophone inner core (6) through printing opacity pressure-bearing plug (12) and is irradiated on Dember effect two-dimensional localization device (8)，Coordinate value voltage signal on this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15)，Piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9)，During after processing after filtering, two paths of signals is input to data process ECU，The data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process；Hydrophone inner core (6) is provided with guide groove and tooth bar, above this tooth bar, hole slot offered by hydrophone outer sleeve (5), sleeve stretching motor (4) is installed in the position of this hole slot, the when of this electric machine rotation, the relative position between hydrophone outer sleeve (5) and hydrophone inner core (6) can be changed so that the length of two-dimensional vector field hydrophone (7) changes (seeing Fig. 2).
Piezoelectric ceramic vibration signal receives the acquisition of signal sheet of reflective membrane (9) and is made up of hard anti-corrosion material, it is embedded with piezoelectric ceramic piece, by having, resilient flexible material is fixing with the outer end of hydrophone outer sleeve (5) to be connected acquisition of signal sheet, and it is reflective mirror that piezoelectric ceramic vibration signal receives the acquisition of signal sheet back side of reflective membrane (9).
Two-dimensional vector field hydrophone (7) uses piezoelectric ceramic vibration signal to receive reflective membrane (9) and obtains the signal two paths of signals that piezoelectric ceramic vibration signal is obtained with red times positioning devices, coordinate value voltage signal on piezoelectric ceramic vibration signal and this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15), piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9), during after processing after filtering, two paths of signals is input to data process ECU, the data processed are delivered to central computer (16) by unified.
Two-dimensional signal collection identification circuit system operation principle: the two-dimentional luminous point information sensor that Dember effect two-dimensional localization device (15) is constituted receives 2-D data information, order is sent to single-chip microcomputer by serial ports, single-chip microcomputer is agreed to and receives corresponding information, the two-dimentional light dot information of two dimension luminous point information sensor collection is converted into rgb format, and data are transferred to single-chip microcomputer, single-chip microcomputer performs substantial amounts of pattern-recognition by the program curing being stored in EEPROM and luminous point data process correlation computations, when the two-dimentional light dot information of input is identified, single-chip microcomputer is by the action of order executing agency, switch leaves.Ardware feature: 80C51 single-chip microcomputer grows up on the basis of 8051,8051 single-chip microcomputers and 80C51 single-chip microcomputer are duplicate in terms of profile, its instruction system, leg signal, bus etc. completely the same (completely compatible), essential difference is that in the manufacturing process of chip.The manufacturing process of 80C51 is to be improved on the basis of 8051.8051 series monolithics use HMOS technique: at high speed, high density；80C51 series monolithic uses CHMOS technique: at high speed, high density, low-power consumption；
As shown in Figure 8.Employing 8051, as the core processor of two dimension luminous point information acquisition identification system, uses the 4K program storage within single-chip microcomputer, connects+5V power supply.Reset circuit then uses simple R C reset circuit, the peripheral circuit resetted can be needed to be connected with some the most again, reach reset Tong Bu with single-chip microcomputer./ EA/Vpp is the selection signal accessing interiorly or exteriorly program storage.Owing to 8051 single-chip microcomputers have an internal program memory of 4K, the most external eeprom memory of 128Kx8, therefore this pin must connect+5V high level./ PSEN is external program memory read gate control signal.Without extender memory in this circuit, therefore this pin is unsettled.Serial communication interface is designed with MAX232 and realizes the conversion of TTL Yu RS-232, it is achieved with compunication.
Claims (3)
1. a two-dimensional vector field hydrophone, it is characterised in that: include being received reflective membrane (9), air pressure transmission channel (10), lasing light emitter (11), printing opacity pressure-bearing plug (12), battery (13), data process ECU(14 by hydraulic balance pipe (1), pliable pressure balancing patch (2), secondary air pressure cabin (3-1), main air pressure cabin (3-2), sleeve stretching motor (4), hydrophone outer sleeve (5), hydrophone inner core (6), Dember effect two-dimensional localization device (8), piezoelectric ceramic vibration signal),
Signal filtering device (15), central computer (16) are constituted；nullPiezoelectric ceramic vibration signal receives reflective membrane (9) and is arranged on the outer end of hydrophone outer sleeve (5)，It is main air pressure cabin (3-2) that piezoelectric ceramic vibration signal receives between reflective membrane (9) and printing opacity pressure-bearing plug (12)，UNICOM is carried out by air pressure transmission channel (10) between this main air pressure cabin (3-2) and secondary air pressure cabin (3-1)，It is provided with pliable pressure balancing patch (2) between secondary air pressure cabin (3-1) and hydraulic balance pipe (1)，It is provided with lasing light emitter (11) in main air pressure cabin (3-2)，The incidence angle that laser beam receives reflective membrane (9) with piezoelectric ceramic vibration signal is θ，θ≠0，The laser beam of reflection enters hydrophone inner core (6) through printing opacity pressure-bearing plug (12) and is irradiated on Dember effect two-dimensional localization device (8)，Coordinate value voltage signal on this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15)，Piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9)，During after processing after filtering, two paths of signals is input to data process ECU，The data of these valuable signals are delivered to central computer (16) by unification and are analyzed and process；Hydrophone inner core (6) is provided with guide groove and tooth bar, above this tooth bar, hole slot offered by hydrophone outer sleeve (5), sleeve stretching motor (4) is installed in the position of this hole slot, the when of this electric machine rotation, the relative position between hydrophone outer sleeve (5) and hydrophone inner core (6) can be changed so that the length of two-dimensional vector field hydrophone (7) changes.
Two-dimensional vector field hydrophone the most according to claim 1, it is characterized in that: piezoelectric ceramic vibration signal receives the acquisition of signal sheet of reflective membrane (9) and is made up of hard anti-corrosion material, it is embedded with piezoelectric ceramic piece, by having, resilient flexible material is fixing with the outer end of hydrophone outer sleeve (5) to be connected acquisition of signal sheet, and it is reflective mirror that piezoelectric ceramic vibration signal receives the acquisition of signal sheet back side of reflective membrane (9).
Two-dimensional vector field hydrophone the most according to claim 1 and 2, it is characterized in that: two-dimensional vector field hydrophone (7) uses piezoelectric ceramic vibration signal to receive reflective membrane (9) and obtains piezoelectric ceramic vibration signal and the 2D signal two paths of signals of red times positioning devices, coordinate value voltage signal on piezoelectric ceramic vibration signal and this two-dimensional localization device is by red times of framing signal line (17) input to signal filtering device (15), piezoelectric ceramic vibration signal receives piezoelectric signal another input by piezoelectric ceramic vibration holding wire (18) input to signal filtering device (15) of reflective membrane (9), during after processing after filtering, two paths of signals is input to data process ECU, the data processed are delivered to central computer (16) by unified.
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| CN201620379568.3U CN205562027U (en) | 2016-04-29 | 2016-04-29 | Two -dimensional vector field hydrophone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361720A (en) * | 2019-07-31 | 2019-10-22 | 武昌理工学院 | A kind of sonar quiets down plate control method |
| CN110471103A (en) * | 2019-08-27 | 2019-11-19 | 昆明研顶技术开发有限公司 | Ultrasonic miniature viberation detector and its application in earthquake detection |
| CN110646082A (en) * | 2019-10-12 | 2020-01-03 | 湖南长城海盾光纤科技有限公司 | Hybrid multiplexing low-loss hydrophone array |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361720A (en) * | 2019-07-31 | 2019-10-22 | 武昌理工学院 | A kind of sonar quiets down plate control method |
| CN110361720B (en) * | 2019-07-31 | 2021-04-02 | 武昌理工学院 | Sonar sound collecting board control method |
| CN110471103A (en) * | 2019-08-27 | 2019-11-19 | 昆明研顶技术开发有限公司 | Ultrasonic miniature viberation detector and its application in earthquake detection |
| CN110646082A (en) * | 2019-10-12 | 2020-01-03 | 湖南长城海盾光纤科技有限公司 | Hybrid multiplexing low-loss hydrophone array |
| CN110646082B (en) * | 2019-10-12 | 2022-07-05 | 湖南长城海盾光纤科技有限公司 | Hybrid multiplexing low-loss hydrophone array |
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