CN110450927A - One kind is drowned oneself floating underwater sound signal acquisition and storage device, dispensing and recovery method - Google Patents

Abstract

The invention discloses a self-sinking and floating underwater acoustic signal collection and storage device, and a method for putting in and recovering it. The device includes: a support rod, a floating ball (1) for increasing the buoyancy of the device, and a floating ball (1) for collecting underwater acoustic signals. Listener (2) and metal bucket (3); Float ball (1) is at the top of the pole, metal bucket (3) is at the bottom of the pole, hydrophone (2) is fixed on the side wall of the pole, and The bottom of the metal barrel (3) is provided with a decoupling (5), and the decoupling (5) is connected to the weight (6); a storage plate and a hydroacoustic release mechanism are arranged in the metal bucket (3); The underwater acoustic signal received by the earpiece (2) is processed, and the processed underwater acoustic signal is stored in the form of a data file according to the time information; the underwater acoustic release mechanism is used to release the The weight (6) makes the whole device float out of the sea under the drive of the buoy (1), and the recovery of the device is realized through the positioning information.

Description

A Self-Sinking Floating Underwater Acoustic Signal Acquisition Storage Device, Delivery and Recovery Method

technical field

The invention relates to the technical field of underwater acoustic measurement, in particular to a self-sinking and floating underwater acoustic signal acquisition and storage device, and a feeding and recycling method.

Background technique

As we all know, the propagation attenuation of sound in water is the smallest, the propagation performance is the best, and it can realize long-distance transmission. It is currently the most important information carrier for studying underwater targets and marine environmental noise. Therefore, underwater acoustic measurement technology has been paid more and more attention by people. The underwater acoustic signal acquisition and recording device can be used to monitor the noise of the marine environment and study marine life, etc. However, the current underwater acoustic signal acquisition equipment generally has the disadvantages of small data storage capacity, high power consumption, and cumbersome mooring deployment operations, and it is difficult to meet long-term requirements. Sequence of underwater acoustic application requirements. Therefore, it is necessary to develop a large-capacity storage, self-floating, low-power underwater acoustic signal acquisition and recording device.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned technical defects, and provide a self-sinking and floating, large-capacity underwater acoustic signal acquisition and storage device, and a method for putting in and recovering it.

In order to achieve the purpose of the above invention, the present invention proposes a self-floating underwater acoustic signal acquisition and storage device, which includes: a support rod, a floating ball for adding buoyancy to the device, and a hydrophone for collecting underwater acoustic signals and a metal bucket; the floating ball is on the top of the pole, the metal bucket is at the bottom of the pole, the hydrophone is fixed on the side wall of the pole, and a decoupling is set at the bottom of the metal bucket, and the decoupling is connected to a heavy object; in the metal bucket Built-in storage board and hydroacoustic release mechanism;

The storage board is used to process the underwater acoustic signal received by the hydrophone, and store the processed underwater acoustic signal in the form of a data file according to the time information;

The underwater acoustic release mechanism is used to release the heavy objects by controlling the decoupling state, so that the whole device floats out of the sea under the drive of the floating ball, and is also used to send out the positioning information of the device to realize the recovery of the device.

As an improvement of the above-mentioned device, the storage board includes an analog amplifying circuit, an analog-to-digital converter, a main control circuit, a switch, a plurality of SD cards, a timing module, and a USB data reading interface; the analog amplifying circuit and the water The hearing instrument is connected, the analog amplifier circuit is connected with the analog-to-digital converter, the analog-to-digital converter is connected with the main control circuit through the IO port, the main control circuit is connected with the switching switch through the IO port, and the switching switch is connected with the SD card , the timing module is connected to the main control circuit through a serial port; the USB data reading interface is connected to the main control circuit;

The analog amplifying circuit is used to filter and amplify the underwater acoustic signal to obtain an analog underwater acoustic signal;

The analog-to-digital converter is used to convert the analog underwater acoustic signal into a digital signal and transmit it to the main control circuit;

The main control circuit is used to receive the time information of the timing module, and is used to write the time information and digital signals into the SD card through the control of the switch; it is also used to control the switch of the timing module;

The switch is used to select an SD card for storage operation;

Described SD card is used for receiving time information and digital signal, with the year, month, day, hour, minute and second of the moment of starting to collect as the file name of data file, digital signal is stored in data file;

The timing module is used to provide time information for the main control circuit;

The USB data reading interface is used to read the data files stored in the SD card.

As an improvement of the above device, the number of the SD cards is 8, and the capacity is 512G.

As an improvement of the above device, the timing module adopts GPS timing or Beidou timing.

As an improvement of the above-mentioned device, the underwater acoustic release mechanism includes: a transducer, an underwater acoustic board, a motor, a positioning module and a digital transmission module; The modules are connected, and the positioning module is connected with the data transmission module;

The transducer is used to receive the signal exhaled by the deck machine and forward it to the underwater sound board,

The underwater acoustic board is used to identify the signal transmitted by the transducer. If it is a release signal, it will send a control signal to the motor to release the heavy object, and supply power to the positioning module; if it is to close the release signal, stop supplying power to the positioning module. ;

The motor is used to receive the control signal for releasing the heavy object, control the unhook state, and make the heavy object detach from the unhook;

The positioning module is used to obtain the location information of the device when the device returns to the water surface;

The data transmission module is used to transmit the location information of the device output by the positioning module to the host computer.

As an improvement of the above device, the positioning module adopts GPS positioning or Beidou positioning.

As an improvement of the above device, the device further includes a magnetic switch for controlling the switch of the device, which is arranged on the inner wall of the metal barrel.

As an improvement of the above device, the device further includes a lithium battery for powering the device, which is arranged in the metal barrel.

The present invention also proposes a method for putting in a self-floating underwater acoustic signal acquisition and storage device. The method includes the following steps:

Approaching the magnetic switch with a magnet, the device is powered on;

After the timing module is powered on, it starts to set the clock. If the timing module is powered off within ten minutes, the clock is set successfully, and the current time is written into the SD card through the main control circuit;

The hydrophone starts to collect the underwater acoustic signal, and sends it to the storage board, and a plurality of SD cards store the digital signal in the data file with the year, month, day, hour, minute and second of the time of starting the collection as the file name of the data file;

Put the device into the sea for long-term data collection and storage.

The present invention also proposes a recovery method of a self-sinking and floating underwater acoustic signal acquisition and storage device, said method comprising the following steps:

The transducer receives the release signal exhaled by the deck machine and forwards it to the hydroacoustic panel,

The underwater acoustic board sends a control signal to the motor to release the heavy object, and at the same time supplies power to the positioning module;

The motor controls the decoupling to drop the heavy object, and the device floats up under the drive of the floating ball;

After the device floats out of the water, the positioning module locates the device, and sends the position information of the device through the digital transmission module;

Salvage and recover the device according to the received location information;

The transducer receives the closing release signal exhaled by the deck machine and forwards it to the underwater acoustic panel;

The hydroacoustic board stops supplying power to the positioning module;

The data files on multiple SD cards are exported through the USB data reading interface.

Compared with prior art, advantage and beneficial effect of the present invention are:

1. The underwater acoustic signal acquisition and storage device of the present invention adopts embedded technology, and the low power consumption analog-to-digital converter and the main control chip make the power consumption of the whole machine very low;

2. The underwater acoustic signal acquisition and storage device of the present invention adopts a high-sensitivity hydrophone and a low-noise operational amplifier, so that the signal-to-noise ratio of the whole machine is very high;

3. The underwater acoustic signal acquisition and storage device of the present invention has the advantages of large-capacity storage and high sampling rate, and supports long-term acquisition, and the effective bandwidth is higher;

4. The underwater acoustic signal acquisition and storage device of the present invention adopts mechanical release, so that the range of working environment is wider and the release speed is faster.

Description of drawings

Fig. 1 is the overall structural block diagram of the underwater acoustic signal acquisition and storage device of the present invention;

Fig. 2 is the connection diagram of the acquisition and storage board of the underwater acoustic signal acquisition and storage device of the present invention;

Fig. 3 is a connection diagram of the underwater acoustic release mechanism of the underwater acoustic signal acquisition and storage device of the present invention;

Fig. 4 is a flow chart of the method for putting in and recovering the underwater acoustic signal acquisition and storage device of the present invention.

Reference sign

1. Float 2. Hydrophone 3. Metal bucket

4. Magnetic switch 5. Decoupling 6. Heavy objects

11. Analog amplifier circuit 12. Analog-to-digital converter 13. Main control circuit

14. Switch 15. SD card 16. GPS timing module

17. USB data reading interface

21. Transducer 22. Hydroacoustic panel 23. Motor

24. GPS positioning module 25. Data transmission module

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

As shown in Figure 1, Embodiment 1 of the present invention provides a self-floating underwater acoustic signal acquisition and storage device, which includes: a float 1, a hydrophone 2, a metal bucket 3, a magnetic switch 4, and a decoupling 5 and weight 6;

Float 1, used to add buoyancy to the device so that it floats from the water after the device is released;

The hydrophone 2 is used to convert the sound signal in water into an analog electrical signal;

A lithium battery, an acquisition and storage board, and a hydroacoustic release mechanism are arranged in the metal barrel 3;

The lithium battery is set in the metal barrel 3 for powering the device, and the collection and storage board and the hydroacoustic release mechanism are fixed on the lithium battery with copper pillars;

The magnetic switch 4 is arranged on the inner wall of the metal barrel 3, and is used for the switch of the control device;

The unhook 5 is at the bottom of the metal barrel 3, and the weight 6 is connected with the device through the unhook 5.

As shown in Figures 1 and 2, the storage board includes an analog amplifier circuit 11, an analog-to-digital converter 12, a main control circuit 13, a two-way switch 14, a plurality of SD cards 15, a GPS timing module 16 and a USB data reading interface 17; of which:

An analog amplifier circuit 11, which is used to filter and amplify the underwater acoustic signal to obtain an analog underwater acoustic signal with a relatively high amplitude;

Analog-to-digital converter 12, which is used to convert the analog underwater acoustic signal into a digital signal, which is transmitted to the main control circuit;

The main control circuit 13 is used to control the underwater acoustic signal to start collecting and stop collecting, and to read and store the collected digital signal; it can also realize multiple SD cards by controlling the two-way switching switch 14. 15 to perform read and write operations; obtain the current time through the GPS timing module 16, and can control the power supply of the GPS timing module 16 and other chips to be turned on or off;

Switch 14, which is used to select which SD card is currently stored and read; each switch can switch four SD cards.

SD card 15, it is used for storing digital signal, and the file stored in the SD card uses the year, month, day, hour, minute and second of the time of starting collection as the file name, to distinguish the files at different collection times; preferably, the number of SD cards is 8 pieces, The capacity is 512G;

GPS timing module 16, which is used to provide accurate time information for the main control circuit 13; Beidou timing can also be used.

The USB data reading interface 17 leads to the outside of the metal barrel 3 through a watertight plug-in; it is used to read the data files stored in the SD card 15 for subsequent data processing.

The hydrophone 2 is connected to the analog amplifier circuit 11, the analog amplifier circuit 11 is connected to the analog-to-digital converter 12, the analog-to-digital converter 12 is connected to the main control circuit 13 through the IO port, and the main control circuit 13 is connected to the switch 14 through the IO port , the switch 14 is connected with the SD card 15, and the GPS timing module 16 is connected with the main control circuit 13 through the serial port and the PPS signal.

As shown in Figure 3, the underwater acoustic release mechanism includes: a transducer 21, an underwater acoustic board 22, a motor 23, a GPS positioning module 24 and a digital transmission module 25;

The transducer 21 is used to receive the signal exhaled by the deck machine and forward it to the underwater acoustic board 22,

The underwater acoustic board 22 is used to identify the signal transmitted by the transducer 21. If it is a release signal, it sends a control signal to the motor 23 to release the weight 6, and supplies power to the positioning module; if it is a closed release signal, it stops Supply power to the positioning module;

The motor 23 is used to receive the control signal for releasing the heavy object 6, control the state of the unhook 5, and make the heavy object 6 detach from the unhook 5;

The positioning module is used to obtain the location information of the device when the device returns to the water surface;

The data transmission module 25 is used to transmit the position information of the device output by the positioning module to the upper computer.

The transducer 21 is connected to the underwater acoustic board 22 , the GPS positioning module 24 and the motor 23 are connected to the underwater acoustic board 22 , and the GPS positioning module 24 is connected to the digital transmission module 25 . Transducer 21 links to each other with hydroacoustic board 22, after transducer 21 receives the release signal that deck machine breathes out, transmits to hydroacoustic board 22, and hydroacoustic board 22 controls motor to come off the weight 6 on the unhook. The underwater acoustic board 22 powers on the GPS positioning module 24, and the GPS positioning module 24 sends the location information of the device to the digital transmission module 25, and the digital transmission module 25 sends the location information.

The underwater acoustic signal acquisition and recording device adopts a modular design, which can encapsulate some functions of the product, and provide diversified configurations while maintaining the high versatility of the device. The underwater sound release part and the acquisition and recording part are divided into two independent functional units, which can be applied in different product designs, which is simple and fast.

Example 2

As shown in Figure 4, Embodiment 2 of the present invention provides a method for putting in and recovering an underwater acoustic signal acquisition and storage device, including the following steps:

The first step is to use a magnet to approach the magnetic switch 4, the red power indicator light is on, and the device is powered on;

In the second step, the GPS timing module 16 is powered on, and then starts to clock. If the GPS timing module 16 is powered off within ten minutes, it means that the GPS is successful to the clock, and the current moment is written into the SD card 15, and the underwater acoustic signal is started to be collected. The acquisition indicator flashes once every 20 seconds.

The third step is to put the device into the sea for long-term data collection and storage;

The fourth step is to use the deck machine to call out the release code, the release light on the device is on, the GPS positioning module 24 is powered on, the unhook 5 will drop the heavy object 6, and the heavy object 6 will float away from the device;

In the fifth step, after the device floats out of the water, the GPS positioning module 24 starts to receive the position signal, and the data transmission module 25 sends out the position information; the matching wireless data transmission box on the ship will receive the current position information of the device;

The sixth step is to salvage and recover the device;

The seventh step is to use the deck machine to call out the release code, the release light goes out, and the GPS positioning module 24 is powered off;

In the eighth step, use the USB data reading interface 17 to sequentially export the data files on the SD card 15 for subsequent data processing.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit them. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent replacements to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all of them should be included in the scope of the present invention. within the scope of the claims.

Claims (10)

1. A self-floating underwater acoustic signal collection and storage device, characterized in that the device comprises: a pole, a float (1) for increasing buoyancy to the device, a hydrophone (1) for collecting the underwater acoustic signal 2) and a metal bucket (3); the float (1) is on the top of the pole, the metal bucket (3) is at the bottom of the pole, the hydrophone (2) is fixed on the side wall of the pole, and the metal bucket ( 3) a decoupling (5) is provided at the bottom, and the decoupling (5) is connected to a heavy object (6); a storage plate and a hydroacoustic release mechanism are provided in the metal bucket (3); The storage board is used to process the underwater acoustic signal received by the hydrophone (2), and store the processed underwater acoustic signal in the form of a data file according to the time information; The underwater acoustic release mechanism is used to release the heavy object (6) by controlling the state of the decoupling (5), so that the entire device floats out of the sea under the drive of the floating ball (1), and is also used to transfer the positioning information of the device Send it out to realize the recycling of the device. 2. The self-floating underwater acoustic signal acquisition and storage device according to claim 1, wherein the storage board includes an analog amplifier circuit (11), an analog-to-digital converter (12), a main control circuit (13), Switch (14), a plurality of SD cards (15), a timing module (16) and a USB data reading interface (17); the analog amplifying circuit (11) is connected with the hydrophone (2), and the analog amplifying The circuit (11) is connected to the analog-to-digital converter (12), the analog-to-digital converter (12) is connected to the main control circuit (13) through an IO port, and the main control circuit (13) is connected to the switch (14) through The IO port is connected, the switch (14) is connected with the SD card (15), the timing module is connected with the main control circuit (13) through a serial port; the USB data reading interface (17) is connected with the main control circuit (13) ; The analog amplifying circuit (11) is used to filter and amplify the underwater acoustic signal to obtain an analog underwater acoustic signal; The analog-to-digital converter (12) is used to convert the analog underwater acoustic signal into a digital signal and transmit it to the main control circuit; The main control circuit (13) is used to receive the time information of the timing module, and is used to write the time information and digital signals into the SD card (15) through the control of the switch (14); it is also used to control the timing module the switch; The switch (14) is used to select an SD card (15) for storage operation; Described SD card (15), is used for receiving time information and digital signal, with the year, month, day, hour, minute and second of the moment of starting to collect as the file name of data file, digital signal is stored in data file; The timing module is used to provide time information for the main control circuit (13); The USB data reading interface (17) is used for reading data files stored in the SD card (15). 3. The self-floating underwater acoustic signal acquisition and storage device according to claim 2, characterized in that, the number of said SD cards (15) is 8, and the capacity is 512G. 4. The self-floating underwater acoustic signal acquisition and storage device according to claim 2, wherein the timing module adopts GPS timing or Beidou timing. 5. The self-floating underwater acoustic signal acquisition and storage device according to claim 2 or 3, characterized in that the underwater acoustic release mechanism comprises: a transducer (21), an underwater acoustic board (22), a motor (23 ), a positioning module and a data transmission module (25); the transducer (21) is connected to the hydroacoustic board (22), and the hydroacoustic board (22) is connected to the motor (23) and the positioning module respectively, and the positioning module is connected to the data transmission module (25) connected; The transducer (21) is used to receive the signal exhaled by the deck machine and forward it to the underwater sound board (22), The underwater acoustic board (22) is used to identify the signal transmitted by the transducer (21), if it is a release signal, send a control signal to the motor (23) to release the heavy object (6), and supply power to the positioning module; If the release signal is closed, stop supplying power to the positioning module; The motor (23) is used to receive a control signal for releasing the heavy object (6), control the state of the decoupling (5), and make the heavy object (6) detached from the decoupling (5); The positioning module is used to obtain the location information of the device when the device returns to the water surface; The data transmission module (25) is used to transmit the position information of the device output by the positioning module to the upper computer. 6. The self-sinking and floating underwater acoustic signal acquisition and storage device according to claim 5, wherein the positioning module adopts GPS positioning or Beidou positioning. 7. The self-floating underwater acoustic signal acquisition and storage device according to claim 1, characterized in that the device also includes a magnetic switch (4) for controlling the switch of the device, which is arranged on the inner wall of the metal barrel (3) . 8. The self-floating underwater acoustic signal acquisition and storage device according to claim 1, characterized in that the device also includes a lithium battery for powering the device, which is arranged in the metal barrel (3). 9. A method for launching a self-floating underwater acoustic signal acquisition and storage device, said method comprising the following steps: Close the magnetic switch (5) with a magnet, and the device is powered on; After the timing module is powered on, start to clock, if the timing module is powered off within ten minutes, then the clock is successful, and the current moment is written into the SD card (15) by the main control circuit (13); The hydrophone (2) starts to collect the underwater acoustic signal, and sends it to the storage board, and a plurality of SD cards (15) store the digital signal in the data file with the year, month, day, hour, minute, and second of the time of starting the collection as the file name of the data file. middle; Put the device into the sea for long-term data collection and storage. 10. A recovery method for a self-sinking and floating underwater acoustic signal acquisition and storage device, said method comprising the following steps: The transducer (21) receives the release signal exhaled by the deck machine and forwards it to the underwater acoustic panel (22), The underwater acoustic board (22) sends a control signal to the motor (23) to release the heavy object (6), and at the same time supplies power to the positioning module; The motor (23) controls the decoupling (5) to drop the weight (6), and the device floats up driven by the floating ball (1); After the device floats out of the water, the positioning module locates the device, and sends the position information of the device through the digital transmission module (25); Salvage and recover the device according to the received location information; The transducer (21) receives the closing release signal exhaled by the deck machine and forwards it to the underwater acoustic panel (22); The underwater acoustic board (22) stops supplying power to the positioning module; Data files on a plurality of SD cards (15) are exported through the USB data reading interface (17).