Conformal self-contained underwater acoustic beacon

Abstract

The utility model belongs to the technical field of underwater detection and underwater acoustic engineering, and particularly discloses a conformal self-contained underwater acoustic beacon which comprises an acoustic beacon shell, the acoustic beacon shell comprises a wedge-shaped conformal body and a cylindrical carrier, the bottom of the wedge-shaped conformal body is attached to the cylindrical carrier, and the top of the wedge-shaped conformal body is an inclined cambered surface; a transducer and a signal processing module are mounted at the top of the wedge-shaped conformal body; a power supply module is arranged in the cylindrical carrier, and the signal processing unit is connected with the power supply module and the transducer respectively; an end cover is arranged at the end of the cylindrical carrier, and a water entry detection module is integrated in the end cover. According to the utility model, the acoustic beacon shell is divided into the wedge-shaped conformal body and the cylindrical carrier, and the top of the wedge-shaped conformal body is the inclined cambered surface, so that the surface space of the UUV is utilized to the greatest extent, the overall size and weight are reduced, the acoustic beacon can be better integrated into the streamline design of the UUV, the resistance during underwater movement is reduced, and the navigation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underwater detection and underwater acoustic engineering technical field, especially relates to a conformal self-contained underwater acoustic beacon. BACKGROUND

[0002] As a dedicated underwater positioning equipment, the acoustic beacon has experienced decades of development at home and abroad, and is generally called Beacon, ULD, and is mostly used in ship's cockpit recorder and aircraft flight parameter recorder. Nowadays, it has been extended to UUV, frogman and other underwater carriers. The United States, France and other developed countries in Europe and America have many types of commercial mature products. The acoustic beacon has the advantages of small size, easy installation, long action time, etc. In the field of underwater acoustics, it indicates the position of the target under water as a sound source, such as underwater positioning, ocean engineering, navigation and tracking of underwater carriers, underwater military and other fields.

[0003] The Chinese patent with publication number CN204256157U discloses an underwater acoustic beacon, which integrates water detection, signal generation, power amplification and transducer impedance matching functions into a circuit board. However, the acoustic beacon shell is in a cylindrical structure, which cannot conform to the UUV, resulting in a large resistance when the underwater acoustic beacon moves underwater, reducing the navigation efficiency, and the underwater acoustic beacon has poor concealment, which increases the probability of being detected by the enemy, limiting the performance and application range of the underwater acoustic beacon. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects in the prior art, and provides an acoustic beacon conformal self-contained underwater acoustic beacon.

[0005] The utility model provides a conformal self-contained underwater acoustic beacon, which comprises an acoustic beacon shell conforming to a UUV, wherein the acoustic beacon shell comprises a wedge-shaped conformal body and a cylindrical carrier, the bottom of the wedge-shaped conformal body is attached to the cylindrical carrier, the top of the wedge-shaped conformal body is an inclined arc surface, and the wedge-shaped conformal body is adapted to the UUV.

[0006] The top of the wedge-shaped conformal body is provided with a first mounting portion and a second mounting portion, a transducer shell is arranged in the first mounting portion, a transducer is arranged in the transducer shell, the second mounting portion is used for mounting a signal processing module, a sound transmission window is arranged at the top of the first mounting portion, and a cover plate is arranged at the top of the second mounting portion.

[0007] The cylindrical carrier is internally provided with a power supply shell, a power supply module is arranged in the power supply shell, and the signal processing unit is connected with the power supply module and the transducer respectively.

[0008] The end of the cylindrical carrier is provided with an end cover, an entering water detection module is integrated inside the end cover, the entering water detection module is connected with the power supply module and the signal processing module respectively, and two electrodes of the entering water detection module are connected with the single-chip microcomputer and the power supply module under water.

[0009] Further, the signal processing module is a single-chip microcomputer and a peripheral crystal oscillator circuit, a PA06_IO port of the single-chip microcomputer is a push-pull pull-up input, and is connected with the entering water detection module 10.

[0010] The peripheral crystal oscillator circuit comprises an external crystal oscillator X1, a capacitor C3 and a capacitor C4, two ends of the external crystal oscillator X1 are connected to an input pin and an output pin of the single-chip microcomputer respectively, one end of the capacitor C3 and one end of the capacitor C4 are connected to the two ends of the crystal oscillator X1 respectively, and the other end of the capacitor C3 and the other end of the capacitor C4 are grounded.

[0011] Further, a PA07_IO port and a PA08_IO port of the single-chip microcomputer output complementary square wave signals, and a dead time is set, and a PA10_IO port sets a pulse voltage width and outputs a sine wave.

[0012] Further, the power supply module comprises a lithium battery and a voltage conversion unit, the voltage conversion unit is electrically connected with the lithium battery, is used for boosting and converting 3.6V voltage to 5V, and the voltage conversion unit is a BOOST chip with a model number of LT3995.

[0013] Further, a power amplification module is further arranged between the signal processing module and the transducer, an output end of the power amplification module is connected with an input end of the transducer, an output end of the signal processing module is connected to an input end of the power amplification module through a shielded cable, a shielding layer of the shielded cable is grounded, and a signal amplitude output by the signal processing module is matched with a required signal amplitude input by the power amplification module.

[0014] Further, the transducer is a piezoelectric ceramic transducer, and an equivalent circuit is a capacitive load.

[0015] Further, a storage module is further arranged inside the cylindrical carrier, and the storage module is connected with the single-chip microcomputer and the power supply module respectively.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] (1) The utility model discloses a sound beacon shell sets up as wedge conformal body and cylindrical carrier two parts, the top of wedge conformal body is inclined cambered surface, can realize conformal with most UUV, utilize the surface space of UUV maximum, reduce the installation of additional external equipment, thereby reduce the overall volume and weight, and the sound beacon that conforms with UUV can better integrate the streamline design of UUV, reduce the resistance when moving under water, improve the navigation efficiency, and this conformal design can make the sound beacon and UUV appearance more integration, reduce the probability of being detected by enemy, especially have important significance in military application.

[0018] (2) The utility model discloses setting the transducer, singlechip, power supply and other key components in wedge conformal body and cylindrical carrier inside, avoids external protruding component, reduces the risk of being damaged in complex underwater environment, improves the stability and reliability of equipment.

[0019] (3) The voltage provided by the lithium battery of the utility model provides 3.3V voltage for singlechip and its peripheral circuit through voltage conversion chip, and the whole machine circuit current is not greater than 70mA when signal transmitting, and the whole machine static current is not greater than 1.5mA during non-emitting signal period, realizes low energy consumption requirement, and power module only needs a disposable battery to power, and the continuous working time is more than 30 days.

[0020] (4) Singlechip PA06_IO port is push-pull pull-up input and is used for detecting water signal, and PA07_IO and PA08_IO are complementary square wave signals, and dead time is set simultaneously, and PA10_IO sets pulse voltage width, and finally realizes the sine wave of output frequency 34.5kHz, width 10ms and period 1s.

[0021] (5) The utility model discloses still setting storage module in the cylindrical carrier inside, is used for storing the configuration information, working data etc. of sound beacon, ensures that data will not lose after power failure. DRAWINGS

[0022] The following drawings only make the utility model illustrative and explanatory, and are not used to limit the scope of the utility model, wherein:

[0023] Figure 1 The utility model discloses external structure schematic diagram;

[0024] Figure 2 The utility model discloses sound beacon shell explosion map;

[0025] Figure 3 The utility model discloses principle block diagram;

[0026] Figure 4 Signal processing module circuit connection schematic diagram;

[0027] In the figure: 1, transducer shell; 2, wedge-shaped conformer; 3, cylindrical carrier; 4, power supply shell; 5, end cover; 6, first mounting portion; 7, second mounting portion; 8, cover plate; 9, sound transmission window; 10, water entry detection module; 11, power supply module; 12, signal processing module; 13, transducer; 14, power amplifier module; 15, storage module. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme, design method and advantages of the utility model more clear and obvious, the utility model is further described in detail below by specific embodiments combined with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0029] As shown in Figure 1 and Figure 3 , the utility model provides a conformal self-contained underwater acoustic beacon, including with UUV conformal acoustic beacon shell, the acoustic beacon shell includes wedge-shaped conformer 2 and cylindrical carrier 3, the bottom of wedge-shaped conformer 2 is attached with cylindrical carrier 3, wedge-shaped conformer 2 top is inclined camber, wedge-shaped conformer 2 and cylindrical carrier 3 realize 20 ° wedge-shaped conform, can realize conformal with most UUV, maximumly utilize the surface space of UUV, reduce additional external equipment installation, thereby reduce overall volume and weight, with UUV conformal acoustic beacon can better integrate into the streamline design of UUV, reduce the resistance when moving underwater, improve navigation efficiency.

[0030] As shown in Figure 2 , first mounting portion 6 and second mounting portion 7 are set up in wedge-shaped conformer 2 top, transducer shell 1 is arranged in first mounting portion 6, transducer 13 is installed in transducer shell 1, second mounting portion 7 is used to install signal processing module 12, sound transmission window 9 is set up in first mounting portion 6 top, cover plate 8 is set up in second mounting portion 7 top, power supply shell 4 is arranged in the inside of cylindrical carrier 3, power supply module 11 is arranged in the inside of power supply shell 4, signal processing unit is connected with power supply module 11 and transducer 13 respectively, end cover 5 is arranged in the end of cylindrical carrier 3, water entry detection module 10 is integrated in the inside of end cover 5, water entry detection module 10 is connected with power supply module 11 and signal processing module 12 respectively, two electrodes of water entry detection module 10 are connected with single-chip microcomputer and power supply module 11 underwater. Figure 4As shown, the signal processing module 12 is a single-chip microcomputer and a peripheral crystal oscillator circuit, the PA06_IO port of the single-chip microcomputer is a push-pull pull-up input, connected with the water inlet detection module 10; the peripheral crystal oscillator circuit includes an external crystal oscillator X1, a capacitor C3 and a capacitor C4, two ends of the external crystal oscillator X1 are connected to the input pin and the output pin of the single-chip microcomputer, one end of the capacitor C3 and the capacitor C4 is connected to two ends of the crystal oscillator X1, the other end of the capacitor C3 and the capacitor C4 is grounded. The PA07_IO port and the PA08_IO port of the single-chip microcomputer output complementary square wave signals, and a dead time is set, the PA10_IO port sets the pulse voltage width and outputs a sine wave with a frequency of 34.5 kHz, a width of 10 ms and a period of 1 s. The power module 11 includes a lithium battery and a voltage conversion unit, the voltage conversion unit is electrically connected with the lithium battery, used for boosting the voltage of 3.6V to 5V, the voltage conversion unit is a BOOST chip with model number LT3995.

[0031] In order to amplify the weak electric signal generated by the signal processing module to sufficient power to drive the transducer to emit sound signals, in the embodiment, a power amplifier module 14 is further arranged between the signal processing module 12 and the transducer 13, the output end of the power amplifier module 14 is connected with the input end of the transducer 13, the output end of the signal processing module 12 is connected to the input end of the power amplifier module 14 through a shielded cable; the shielding layer of the shielded cable is grounded; the signal amplitude output by the signal processing module 12 matches the required signal amplitude input by the power amplifier module 14.

[0032] In the above, the transducer 13 is a piezoelectric ceramic transducer, the equivalent circuit is a capacitive load, the transducer 13 converts the sine signal output by the power amplifier module 14 into a sound signal; the parameters of the transducer 13 reflect the properties of the load, and also determine the electroacoustic conversion efficiency of the transducer 13. The transducer 13 adopts a composite rod type and is installed in a conformal structure, which can realize a sound source level not less than 160.5 dB (at 37.5 kHz) and an electroacoustic conversion efficiency not less than 80%.

[0033] In order to ensure that the data will not be lost after power failure, a storage module 15 is further arranged inside the cylindrical carrier 3, the storage module 15 is connected with the single-chip microcomputer and the power module 11 respectively.

[0034] The utility model discloses a low power consumption and long standby time underwater acoustic beacon system, which comprises a single-chip microcomputer, a power module, an underwater detection module, a power amplifier module and a transducer. When the system is in the state of not entering water, the underwater detection module 10 outputs a signal to the single-chip microcomputer, and the single-chip microcomputer makes the whole system in a low-power standby state to save the battery power. After the acoustic beacon is immersed in water, the underwater detection module 10 detects the existence of water and sends a signal to the single-chip microcomputer. The current of the whole machine circuit during signal transmission is not greater than 70 mA, and the static current of the whole machine during non-signal transmission is not greater than 1.5 mA. The beacon circuit only needs a disposable battery for power supply, and the continuous working time is more than 30 days. The single-chip microcomputer starts the acoustic beacon system and obtains power supply from the power module 11. According to the preset parameters or external instructions, the single-chip microcomputer controls the peripheral crystal oscillator circuit to generate a specific electric signal. After the electric signal is amplified by the power amplifier module 14, the transducer 13 converts the electric signal into an acoustic signal and transmits the acoustic signal into water. The acoustic signal can be received and processed by other underwater devices (such as receivers, underwater robots, etc.), so as to realize underwater communication, positioning, navigation and other functions.

[0035] The above has described the various embodiments of the utility model, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used in this paper is intended to best explain the principles, practical application or technical improvement in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed in this paper.

Claims

1. A conformal self-contained underwater acoustic beacon, characterized by, The application relates to an acoustic beacon shell conforming to a UUV, which comprises a wedge-shaped conforming body (2) and a cylindrical carrier (3), the bottom of the wedge-shaped conforming body (2) is attached to the cylindrical carrier (3), and the top of the wedge-shaped conforming body (2) is an inclined arc surface which is adapted to the UUV. A first mounting part (6) and a second mounting part (7) are arranged at the top of the wedge-shaped conforming body (2), a transducer shell (1) is arranged in the first mounting part (6), a transducer (13) is arranged in the transducer shell (1), the second mounting part (7) is used for mounting a signal processing module (12), a sound transmission window (9) is arranged at the top of the first mounting part (6), and a cover plate (8) is arranged at the top of the second mounting part (7). A power supply shell (4) is arranged in the cylindrical carrier (3), a power supply module (11) is arranged in the power supply shell (4), and the signal processing module (12) is connected with the power supply module (11) and the transducer (13) respectively. An end cover (5) is arranged at the end of the cylindrical carrier (3), an underwater detection module (10) is integrated in the end cover (5), the underwater detection module (10) is connected with the power supply module (11) and the signal processing module (12) respectively, and two electrodes of the underwater detection module (10) are connected with the signal processing module (12) and the power supply module (11) under water.

2. A conformal self-contained underwater acoustic beacon according to claim 1, wherein, The signal processing module (12) is a single-chip microcomputer and a peripheral crystal oscillator circuit, a PA06_IO port of the single-chip microcomputer is a push-pull pull-up input, and is connected with the underwater detection module (10). The peripheral crystal oscillator circuit comprises an external crystal oscillator X1, a capacitor C3 and a capacitor C4, two ends of the external crystal oscillator X1 are connected to input pins and output pins of the single-chip microcomputer respectively, one end of the capacitor C3 and one end of the capacitor C4 are connected to the two ends of the crystal oscillator X1, and the other end of the capacitor C3 and the other end of the capacitor C4 are grounded.

3. A conformal self-contained underwater acoustic beacon according to claim 2, wherein, A PA07_IO port and a PA08_IO port of the single-chip microcomputer output complementary square wave signals, and a dead time is set, a PA10_IO port sets a pulse voltage width and outputs a sine wave.

4. A conformal self-contained underwater acoustic beacon according to claim 3, wherein, The power supply module (11) comprises a lithium battery and a voltage conversion unit, the voltage conversion unit is electrically connected with the lithium battery, is used for converting 3.6V voltage into 5V voltage, and the voltage conversion unit is a BOOST chip with an LT3995 model.

5. A conformal self-contained underwater acoustic beacon according to claim 4, wherein, A power amplification module (14) is further arranged between the signal processing module (12) and the transducer (13), an output end of the power amplification module (14) is connected with an input end of the transducer (13), an output end of the signal processing module (12) is connected to an input end of the power amplification module (14) through a shielded cable, a shielding layer of the shielded cable is grounded, and a signal amplitude output by the signal processing module (12) is matched with a required signal amplitude input by the power amplification module (14).

6. A conformal self-contained underwater acoustic beacon according to claim 5, wherein, The transducer (13) is a piezoelectric ceramic transducer, and an equivalent circuit is a capacitive load.

7. A conformal self-contained underwater acoustic beacon according to claim 6, wherein, The cylindrical carrier (3) is internally provided with a storage module (15) connected with the single-chip microcomputer and the power module (11) respectively.

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