CN104965200B - Dynamic Signal generating means based on pull-type underwater sound signal emission system - Google Patents
Dynamic Signal generating means based on pull-type underwater sound signal emission system Download PDFInfo
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- CN104965200B CN104965200B CN201510400415.2A CN201510400415A CN104965200B CN 104965200 B CN104965200 B CN 104965200B CN 201510400415 A CN201510400415 A CN 201510400415A CN 104965200 B CN104965200 B CN 104965200B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/524—Transmitters
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Abstract
The invention discloses a kind of Dynamic Signal generating means based on pull-type underwater sound signal emission system, it is characterised in that：The Dynamic Signal generating means includes the control system of model MSP430F1611, the DDS chips of model AD5930, external switch circuit, the active crystal oscillator of model 40M, the dynamic crystal oscillator of model PIC12F509, crystal oscillator on-off circuit, serial ports distributor circuit, pressure sensor, wireless communication module A, wireless communication module B, electronic compass, electric power management circuit, rechargeable battery, signal conditioning circuit, filtering and amplifying circuit and power-supply system；By above measure, the simple and convenient frequency for realizing DDS chip signal outputs, amplitude is adjustable, especially works well in DDS chip output low frequency signals, increased the scope of application of Dynamic Signal generating means, improve the performance of Dynamic Signal generating means.
Description
Technical field
The present invention relates to adopt the dynamic letter of DDS (Direct Digital Synthesis, direct digital synthesizers) technology
Number generating means, more particularly to the Dynamic Signal generating means based on pull-type underwater sound signal emission system.
Background technology
Pull-type underwater sound signal emission system is a kind of artificial pull-type exclusively for ocean Acoustic Wave Propagation measuring and design
Sound source, it can provide artificial control or launch automatically the high-power acoustic signals of multiple waveforms, can be latent with acoustic buoy or acoustics
Mark, with the use of ocean Acoustic Wave Propagation measurement task is completed, is one of important means of marine acoustics environmental observation and research.
Pull-type underwater sound signal emission system is made up of building berth control system and towed body two parts, wherein building berth control system
System includes industrial computer, UPS, power module, high-power DC power supply, modem, collector and standard hydrophone etc.；Towing
Body includes Dynamic Signal generating means, transmitting transducer, high-power transmitter module, modem, transducer adaptation, transducing
Device automatic control module, high-voltage large-capacity storage capacitor, pressure sensor, attitude transducer, electronics nacelle and towing housing etc..
Dynamic Signal generating means is that the building berth instruction to receiving is explained, and is grasped according to building berth instruction accordingly
Make, with continuous signal and swept-frequency signal output function, the frequency of output signal, amplitude, length and be spaced adjustable.
Direct digital synthesis technique (DDS) is a kind of new frequency synthesis technique, as which is applied in digital field advantage
It is prominent, so developing rapidly in recent years, have become now signal source main flow.DDS is mainly by FREQUENCY CONTROL word register, phase place
Accumulator, phase amplitude conversion lookup table, D/A converter and low pass filter (LPF) are constituted.
Frequency control word and the key input amount that CLK is DDS.When DDS starts working, often carry out a clock, phase place is tired out
Plus device just completes one-accumulate, and accumulation result is stored in phase register, while export giving phase amplitude conversion lookup
Table.The task of phase amplitude conversion lookup table is that the phase place of input is calculated its amplitude, Ran Houzai according to look-up table mode
Digital-to-analogue conversion is completed by D/A converter, a continuous analog signal can be obtained in output end.
The frequency of CLK is fClk, frequency f of the value M decision output of frequency control wordout：
Digit N that frequency control word be can be seen that from (1) formula is higher, and the resolution ratio of output frequency is higher, when the position of M
When number is N, the frequency resolution Δ f of DDS is：
Mono- timing of digit N when frequency control word, f be can be seen that from (2) formulaClkFrequency is higher, causes the frequency of DDS on the contrary
Rate resolution ax f is reduced, when DDS exports swept-frequency signal, as DDS frequency increment registers are the multiples of Δ f, so while
The resolution ratio of frequency increment can be caused to decline, in signal generator output low frequency signal, this phenomenon is particularly evident, Wo Men
During modelled signal generator, as the crystal oscillator operating frequency of signal generator is too high, cause the frequency resolution Δ f of DDS too low,
So that it cannot export the swept-frequency signal of the low frequency wanted.
What is used on signal generator at present mostly is the crystal oscillator of fixed frequency, with the development of DDS technologies, the frequency of crystal oscillator
Rate more and more higher, not only causes the power consumption of signal generator to increase with the frequency of crystal oscillator and increase, and causes signal generator
Frequency resolution reduce；The crystal oscillator scope of application of fixed frequency is less.
The content of the invention
The technical problem to be solved in the present invention is：For the crystal oscillator in the traditional signal generator using fixed frequency, signal
The poor problem of generator applicability,
The technical solution used in the present invention is：
A kind of Dynamic Signal generating means based on pull-type underwater sound signal emission system, the pull-type underwater sound signal are sent out
Penetrate system to be made up of building berth control system and towed body, it is internal that the Dynamic Signal generating means is arranged on above-mentioned towing；It is described
Dynamic Signal generating means includes that the control system of model MSP430F1611, the DDS chips of model AD5930, outside are opened
Powered-down road, the active crystal oscillator of model 40M, the dynamic crystal oscillator of model PIC12F509, crystal oscillator on-off circuit, serial ports distribution electricity
Road, pressure sensor, wireless communication module A, wireless communication module B, electronic compass, electric power management circuit, rechargeable battery, letter
Number modulate circuit, filtering and amplifying circuit and power-supply system；Wherein：
The control system is connected with DDS chips by I/O pins；The digital dock of the DDS chips has two inputs
Source, the above-mentioned two input source respectively active crystal oscillator of fixation and dynamic crystal oscillator, the control system are brilliant with dynamic by I/O pins
Shake connection；The simulation output pin of the control system is connected with DDS chips full scale adjustment controlling switch；The mould of control system
Intend output pin to be connected with operational amplifier in-phase end, remove output signal DC offset voltage.
Further, the dynamic crystal oscillator is made up of single-chip microcomputer；Simulation I is provided with above-mentioned single-chip microcomputer2C interface, above-mentioned list
Piece machine is by simulating I2C interface sends to dynamic crystal oscillator and orders；The control system is by I/O pins and dynamic crystal oscillator reset terminal
Connection, and then dynamic crystal oscillator is resetted；Reserved two pins for connecting external crystal oscillator of the dynamic crystal oscillator.
Further, electronic compass is installed in the front portion of towed body；The electronic compass is individually powered using rechargeable battery；
Information is interacted by communication between above-mentioned electronic compass and control system.
The present invention has the advantages and positive effects that：
Continuous signal and frequency sweep can be exported by adopting above-mentioned technical proposal, the Dynamic Signal generating means in the present invention
Signal, the frequency of output signal, amplitude, adjustable length；Pressure sensor, attitude transducer serial data can be gathered simultaneously and are determined
When pass to building berth；External switch circuit relay/air switch can be passed through；
As the digital dock of DDS chips in the present invention there are two input sources, respectively fix active crystal oscillator and dynamic is brilliant
Shake, while selected using which kind of crystal oscillator by I/O pins by control system, therefore can be when high-frequency signal is exported using active
Crystal oscillator, selects dynamic crystal oscillator when output signal frequency is relatively low.
As dynamic crystal oscillator is made up of single-chip microcomputer, therefore output frequency is adjustable clock signal.Control system passes through 2
I/O pins are connected with dynamic crystal oscillator, simulate I2C interfaces, are sent to dynamic crystal oscillator and are ordered.Control system by 1 I/O pin with
Dynamic crystal oscillator reset terminal connection, can reset dynamic crystal oscillator.The single-chip microcomputer of dynamic crystal oscillator adopts built-in crystal oscillating circuit, can so subtract
Few peripheral circuit；The single-chip microcomputer of dynamic crystal oscillator reserves two pins, and exporting special clock frequency if desired can be with external crystalline substance
Shake.
As electronic compass is easily disturbed by external magnetic field, it is the quality of data for improving electronic compass, by electronics sieve
Disk is arranged on the front portion of towed body, realizes the physical isolation of electronic compass and miscellaneous equipment.The number of control system and electronic compass
Realized by wireless communication module according to communication；Electronic compass is operationally by rechargeable battery powered；When electronic compass does not work,
Control system controls electric power management circuit by I/O pins and completes to charge rechargeable battery.
Dynamic Signal generating means has two kinds of digital dock inputs, can select different crystal oscillators as needed, enhance dynamic
The scope of application of state signal generation apparatus.Dynamic crystal oscillator is made up of single-chip microcomputer, can configure the different clock output of output, convenient spirit
It is living, in Dynamic Signal generating means output low frequency signal, the clock frequency of DDS can be suitably reduced, so can not only reduce work(
Consumption, can also reduce system interference.
The two-way simulation output port carried using control system, all the way for adjusting DDS chip signal output amplitudes, separately
It is used for all the way removing the dynamic DC offset voltage of output signal, simple circuit, precision and reliability height.
Electronic compass realizes physical isolation with miscellaneous equipment, can effectively improve the electronic compass quality of data.
Description of the drawings
Circuit block diagrams of the Fig. 1 for the preferred embodiment of the present invention；
Fig. 2 is the dynamic crystal oscillating circuit of Dynamic Signal generating means in the preferred embodiment of the present invention；
Fig. 3 is the dynamic crystal oscillator workflow diagram of Dynamic Signal generating means in the preferred embodiment of the present invention；
Fig. 4 is the signal output waveform of Dynamic Signal generating means in the preferred embodiment of the present invention；
Fig. 5 is the DDS chip dynamic voltage biasing circuits of Dynamic Signal generating means in the preferred embodiment of the present invention；
Description of symbols in figure：
1st, control system 2, DDS chips
3rd, external switch circuit 4, active crystal oscillator
5th, dynamic crystal oscillator 6, crystal oscillator on-off circuit
7th, building berth 8, serial ports distributor circuit
9th, pressure sensor 10, wireless communication module A
11st, wireless communication module B 12, electronic compass
13rd, electric power management circuit 14, rechargeable battery
15th, signal conditioning circuit 16, filtering and amplifying circuit
17th, power-supply system.
Specific embodiment
Technical scheme is further described with reference to accompanying drawing.
As shown in figure 1, a kind of Dynamic Signal generating means based on pull-type underwater sound signal emission system, above-mentioned pull-type
Underwater sound signal emission system is made up of building berth 7 and Dynamic Signal generating means, and Dynamic Signal generating means is arranged on towing in vivo,
With Dynamic Signal generating means by cable connection, above-mentioned Dynamic Signal generating means is controlled to coordinate dynamic letter building berth 7 by building berth 7
The work of number generating means.
The Dynamic Signal generating means includes the control system 1, model AD5930 of model MSP430F1611
DDS chips 2, the dynamic crystal oscillator 5, crystal oscillator of the active crystal oscillator 4, model PIC12F509 of external switch circuit 3, model 40M are opened
Powered-down road 6, serial ports distributor circuit 8, pressure sensor 9, wireless communication module A10, wireless communication module B11, electronic compass 12,
Electric power management circuit 13, rechargeable battery 14, signal conditioning circuit 15, filtering and amplifying circuit 16 and power-supply system 17；Wherein：
The control system 1 is connected with DDS chips 2 by I/O pins；The digital dock of the DDS chips 2 have two it is defeated
Enter source, the active crystal oscillator 4 of above-mentioned two input source respectively fixation and dynamic crystal oscillator 5, the control system 1 by I/O pins with
Dynamic crystal oscillator 5 connects；The simulation output pin of the control system 1 is connected with 2 full scale of DDS chips adjustment controlling switch；Control
The simulation output pin of system processed 1 is connected with operational amplifier in-phase end, removes output signal DC offset voltage.
Dynamic Signal generating means, with CW/Chirp signal output functions；Signal length adjustable extent is：500ms～
1000ms；Signal amplitude scope is：1Vpp～5Vpp；Reception work(with pressure sensor 9, attitude transducer serial data
Can, and building berth 7 is passed in timing；With relay/air switch control function.Dynamic Signal generating means can export continuous letter
Number and swept-frequency signal, the frequency of output signal, amplitude, adjustable length；Pressure sensor 9, attitude transducer serial ports number can be gathered
According to and regularly pass to building berth 7；External switch 3 relays of circuit/air switch can be passed through.Control system 1 will by serial mode
Data write DDS chips 2, the register for controlling DDS chips 2 realizes the output of unlike signal, can export continuous signal or sweep
Frequency signal, the frequency-adjustable of output signal.
The digital dock (MCLK) of DDS chips 2 has two input sources, respectively fixes active crystal oscillator 4 (40M) and dynamic is brilliant
Shake 5 (PIC12F509), is selected using which kind of crystal oscillator by I/O pins by control system 1, when high-frequency signal is exported using having
Source crystal oscillator 4, selects dynamic crystal oscillator 5 when output signal frequency is relatively low
Using single-chip microcomputer MSP430F1611 as control system 1.MSP430F1611 chips have outer boxing on abundant piece
Block, has 48 I/O ports from P1 to P6, contains 12 A/D converters, 2 road DA outputs, precision analog comparator, hardware
Multiplier, 2 class frequencys can reach 8MHz clock modules, 2 16 bit timing devices with a large amount of capture/comparand registers, see
Door dog, 2 can realize the serial communication interface of asynchronous/synchronization and multiple access, dozens of can realize direction arrange and in
Parallel input/output port of disconnected function etc..
Dynamic crystal oscillator 5 is made up of single-chip microcomputer, the adjustable clock signal of output frequency.Control system 1 passes through 2 I/O pins
It is connected with dynamic crystal oscillator 5, simulates I2C interface, sends to dynamic crystal oscillator 5 and orders.Control system 1 is by 1 I/O pin and dynamic
5 reset terminal of crystal oscillator connects, and can reset dynamic crystal oscillator 5.The single-chip microcomputer of dynamic crystal oscillator 5 adopts built-in crystal oscillating circuit, can so subtract
Few peripheral circuit；The single-chip microcomputer of dynamic crystal oscillator 5 reserves two pins, and exporting special clock frequency if desired can be with external crystalline substance
Shake.
After electricity completes initialization on dynamic crystal oscillator 5, wait control system 1 to order, correlation is performed according to the order of control system 1
Operation.When dynamic crystal oscillator 5 is operated in output frequency state, it is not responding to control system 1 and orders, so can ensure that output frequency
Accuracy；If control system 1 will change the output frequency of dynamic crystal oscillator 5, by the dynamic crystal oscillator 5 of I/O pins reset, make
State crystal oscillator 5 can receive new frequency parameter.
Control system 1 passes through two simulation output pins, there is provided the voltage of dynamic change, adjusts the defeated of 2 signal of DDS chips
Go out amplitude, remove the DC offset voltage of 2 output signal of DDS chips.
DDS chips 2 adjust controlling switch to adjust the size of output current by full scale, and the simulation of control system 1 is defeated
Go out pin to be connected with 2 full scale of DDS chips adjustment controlling switch, control system 1 changes full by changing the voltage of simulation output
Range electric current, so as to change the voltage output of DDS chips 2, realizes the amplitude adjusted of output signal.
When 2 output load resistance of DDS chips is fixed value, the output voltage of DDS chips 2 changes within the specific limits,
The sinusoidal signal of output has a positive DC offset voltage, and Dynamic Signal generating means output signal needs to remove direct current inclined
Put voltage.The DC offset voltage of output signal is removed using subtraction circuit, due to when 2 output amplitude of DDS chips changes, directly
Stream biasing also changes therewith, so control system 1 provides variable voltage by simulation output pin accesses operational amplifier, removes
DC offset voltage.
As electronic compass 12 is easily disturbed by external magnetic field, it is the quality of data for improving electronic compass 12, by electricity
Sub- compass 12 is arranged on the front portion of towed body, realizes the physical isolation of electronic compass 12 and miscellaneous equipment.Control system 1 and electronics
The data communication of compass 12 is realized by wireless communication module；Electronic compass 12 is operationally powered by rechargeable battery 14；In electricity
When sub- compass 12 does not work, control system 1 controls electric power management circuit 13 by I/O pins and completes to charge rechargeable battery 14.
Dynamic Signal generating means has two kinds of digital dock inputs, can select different crystal oscillators as needed, enhance dynamic
The scope of application of state signal generation apparatus.Dynamic crystal oscillator 5 is made up of single-chip microcomputer, can configure the different clock output of output, convenient
Flexibly, in Dynamic Signal generating means output low frequency signal, the clock frequency of DDS can be suitably reduced, so can be not only reduced
Power consumption, can also reduce system interference.
The two-way simulation output port carried using control system 1, all the way for adjusting 2 signal output amplitude of DDS chips,
Another road is used for the dynamic DC offset voltage for removing output signal, simple circuit, precision and reliability height.
Electronic compass 12 realizes physical isolation with miscellaneous equipment, can effectively improve 12 quality of data of electronic compass
DDS chips 2 adopt AD5930, the programmable frequency sweeps of AD5930 and output trigger waveform generator.The chip region
Designed exclusively for frequency sweep the characteristics of other series of products, it does not need other additional devices just complete may be programmed
Frequency sweep；AD5930 power consumptions are relatively low, are adapted to portable equipment and use.This device is using the embedded number for supporting enhancement mode FREQUENCY CONTROL
Word processing technology, can generate the analog or digital frequency step waveform of synthesis；Can using the frequency configuration file of preprogramming
To avoid continuous write cycle time, so as to release important DSP/ microcontroller resources；Waveform, and can from the beginning of known phase
Continuously to increase phase place, therefore, it is possible to easily determine phase shift.
AD5930 can produce the output of sine wave, triangular wave and square wave, and have three kinds of mode of operations, and control is flexible.
Under continuous output mode, the device is defining frequency needed for output in duration, then steps into next frequency.Export for the device
The duration of CF, can carry out preprogramming and allow device to be incremented by automatically the frequency, or carry out outside by CTRL pins
It is incremented by.Under burst mode, the device exports its frequency in certain time length, in then returning in another predefined duration
Between level, then step into next frequency.Under MSB patterns, the device produces numeral output.
When being programmed to device, user needs to be input into initial frequency, frequency step, quantity increment, and device is each
Frequency point residence time is spaced.Frequency configuration parameter can be started by switching CTRL pins.
The device provides various different scan modes.Frequency carrys out continuous scanning up and down entirely with the stepping of triangular scanning pattern
Frequency range, or scanned up with saw scan pattern, but initiate again to return to original frequency before scanning.Additionally, nothing
Any scanning need to be performed, single frequency or burst can be also produced.
AD5930 writes data by three-wire type serial line interface, can work under the clock rate of 40MHz.Device is adopted
2.3V to 5.5V power supplys are powered, and operating current is only 8mA, and AD5930 provides convenient low-power consumption solution party for waveform generator
Case.And there is idle function, the part not used in can turning off device, shutdown mode power consumption is only 20 μ A.
AD5930 is mainly used in the aspects such as frequency sweep, network impedance measurement, and frequency triggering and shaping pulse.
Single-chip microcomputer MSP430F1611 is connected with AD5930 by I/O pins, including control input (FSYNC), numeral input
(CTRL), serial clock (SCLK), serial date transfer (SDATA), interruption (INTERRUPT) and lower electricity (STANDBY), monolithic
Machine writes data into AD5930, the control register of control AD5930, initial frequency register, frequency increment by serial mode
Register and frequency hopping quantity register realize the output of unlike signal.
The digital dock (MCLK) of AD5930 has two input sources, respectively fixes active crystal oscillator 4 (40M) and dynamic crystal oscillator
Which kind of crystal oscillator 5 (PIC12F509), selected using by I/O pins by control system 1, when high-frequency signal is exported using active
Crystal oscillator 4, selects dynamic crystal oscillator 5 when output signal frequency is relatively low.
As shown in Fig. 2 dynamic crystal oscillator 5 is made up of Microchip companies single-chip microcomputer PIC12F509, PIC12F509 is used
The high accuracy internal oscillator of 4MHz a, as long as chip does not have other peripheral circuits；PIC12F509 has 6 I/O pins
(GP0-GP5), it is connected with control system 1 using 2 pins, GP0 is connected with P1.0, and GP1 is connected with P1.1, simulates I2C interface,
Receive control system 1 to order；GP2 exports MCLK-1 as dynamic clock, by crystal oscillator on-off circuit 6 and AD5930 it is digital when
Clock (MCLK) connects；Pin GP3 is connected with P1.2, and control system 1 passes through P1.2 pin reset single-chip microcomputer PIC12F509；It is reserved
Two pins GP4 and GP5, exporting special clock frequency if desired can be with external crystal oscillator.
After the workflow of PIC12F509 is as shown in figure 3, electricity completes initialization on PIC12F509, control system 1 is waited
Order, orders according to control system 1 and performs related operation.When PIC12F509 is operated in output frequency state, control is not responding to
System 1 is ordered, if control system 1 to be changed the output frequency of PIC12F509, by P1.2 reset PIC12F509, is made
PIC12F509 resets to receive new frequency parameter.
All instructions (33) of the PIC12F509 in addition to programming jump instruction all (use built-in crystal oscillator in a cycle
Be 1 μ s during 4MHz) in perform, so the highest frequency of PIC12F509 outputs is 125KHz, the output gap of GP3 by controlling is
System 1 sets.
MSP430F1611 adjusts controlling switch (FSADJUST) to adjust the size of output current, Man Liang by full scale
Journey adjusts controlling switch outer meeting resistance RSET(6.8k Ω) is shown with the relation such as formula (3) of output current.
In the design, FSADJUST and the simulation output pin (DA0) for being connected to MSP430F1611, the voltage of DA0 are defeated
Go out for VDA0, then full scale electric current be：
Change VDA0Full scale electric current will be changed, so as to change the voltage output of AD5930.MSP430F1611 passes through VDA0Carry
For the variable voltage.Electric current output (the I of AD5930OUT) by 200 Ω resistance eutral groundings, electric current is exported in about 0.16mA to about
3.12mA between change.
When the load resistance of AD5930 is 200 Ω, its output voltage changes to about between 0.624V in about 0.032V.
The output voltage of AD5930 as shown in fig. 4 a, and shown in oscillogram 4b of reality output, needs to remove DC offset voltage.Using
Circuit shown in Fig. 5, realizes that DDS output signals are nursed one's health, due to the output voltage V of AD5930ddsIt is to change, MSP430F1611 leads to
Cross simulation output pin (DA1) and variable voltage V is providedda1, make VoutExport as exported the waveform shown in Fig. 4 b.
DDS chips 2 are by after signal conditioning circuit 15, in addition it is also necessary to signal is amplified through filtering and amplifying circuit 16 and
After filtering, design requirement is just can reach.
MSP430F1611 is connected with external switch circuit 3 by I/O pins, realizes the switch control rule to external equipment.
The serial ports 0 of MSP430F1611 is connected with building berth 7 by cable, realizes data interaction.
The serial ports 1 of MSP430F1611 completes the data of pressure sensor 9 and electronic compass 12 by serial ports distributor circuit 8
Collection.
As electronic compass 12 is easily disturbed by external magnetic field, it is the quality of data for improving electronic compass 12, by electricity
Sub- compass 12 is arranged on the front portion of towed body, realizes the physical isolation of electronic compass 12 and miscellaneous equipment.MSP430F1611 and electricity
The data communication of sub- compass 12 passes through wireless communication module A10 and wireless communication module B11 and realizes；Electronic compass 12 is operationally
Powered by rechargeable battery 14；When electronic compass 12 does not work, MSP430F1611 controls electric power management circuit by I/O pins
13, the charging work to rechargeable battery 14 is completed by power-supply system 17.
Claims (3)
1. a kind of Dynamic Signal generating means based on pull-type underwater sound signal emission system, it is characterised in that：The pull-type
Underwater sound signal emission system is made up of building berth control system and towed body, and the Dynamic Signal generating means is arranged on above-mentioned towing
In vivo；It is characterized in that：The Dynamic Signal generating means includes the control system of model MSP430F1611, model
The DDS chips of AD5930, external switch circuit, the active crystal oscillator of model 40M, the dynamic crystal oscillator of model PIC12F509, crystalline substance
Shake on-off circuit, serial ports distributor circuit, pressure sensor, wireless communication module A, wireless communication module B, electronic compass, power supply
Management circuit, rechargeable battery, signal conditioning circuit, filtering and amplifying circuit and power-supply system；Wherein：
The control system is connected with DDS chips by I/O pins；The digital dock of the DDS chips has two input sources, on
Two input sources respectively active crystal oscillator of fixation and dynamic crystal oscillator are stated, the control system is connected with dynamic crystal oscillator by I/O pins
Connect；The simulation output pin of the control system is connected with DDS chips full scale adjustment controlling switch；The simulation of control system is defeated
Go out pin to be connected with operational amplifier in-phase end, remove output signal DC offset voltage.
2. the Dynamic Signal generating means based on pull-type underwater sound signal emission system according to claim 1, its feature
It is that the dynamic crystal oscillator is made up of single-chip microcomputer；Simulation I2C interfaces are provided with above-mentioned single-chip microcomputer, above-mentioned control system passes through
Simulation I2C interfaces send to dynamic crystal oscillator and order；The control system is connected with dynamic crystal oscillator reset terminal by I/O pins, is entered
And dynamic crystal oscillator is resetted；Reserved two pins for connecting external crystal oscillator of the dynamic crystal oscillator.
3. the Dynamic Signal generating means based on pull-type underwater sound signal emission system according to claim 1, its feature
It is that electronic compass is installed in the front portion of towed body；The electronic compass is individually powered using rechargeable battery；Above-mentioned electronics sieve
Information is interacted by communication between disk and control system.
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| CN105632481A (en) * | 2016-01-26 | 2016-06-01 | 中国船舶重工集团公司第七一〇研究所 | Towing-type self-generating underwater sound source sound generating device |
| CN107132541B (en) * | 2017-06-14 | 2019-10-18 | 哈尔滨工程大学 | The low intercepting and capturing multiple access resoluting signal generation method of more base sonars |
| CN108225285B (en) * | 2018-01-30 | 2024-01-09 | 国家海洋技术中心 | Towed underwater sound source system |
| CN113625310B (en) * | 2021-06-18 | 2023-08-29 | 西安空间无线电技术研究所 | Large-range high-linearity orthogonal signal amplitude-frequency dynamic simulation method and simulation system |
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