CN110657883A - Self-powered device and ocean background sound field observation system - Google Patents
Self-powered device and ocean background sound field observation system Download PDFInfo
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- CN110657883A CN110657883A CN201910903119.2A CN201910903119A CN110657883A CN 110657883 A CN110657883 A CN 110657883A CN 201910903119 A CN201910903119 A CN 201910903119A CN 110657883 A CN110657883 A CN 110657883A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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Abstract
The invention discloses a self-powered device and an ocean background sound field observation system. The invention provides a self-powered device for an ocean background sound field observation system, which comprises: the lithium battery pack charging system comprises a power supply monitoring circuit, a plurality of lithium battery packs, a charging circuit and a self-powered power supply. The power supply monitoring circuit is used for monitoring the voltage of each lithium battery pack and sending a charging instruction when the lithium battery pack with the voltage lower than a preset voltage threshold exists; the charging circuit can switch a charging object of the self-powered power supply according to the charging instruction so that the self-powered power supply can charge the lithium battery pack with the voltage lower than the preset voltage threshold value, and therefore when the self-powered device is used in the marine background sound field observation system, the self-powered device can continuously supply power to the acoustic acquisition unit, and the marine background sound field observation system achieves the purpose of long-time-sequence continuous observation.
Description
Technical Field
The invention relates to the field of ocean observation, in particular to a self-powered device and an ocean background sound field observation system.
Background
With the development of marine acoustics, the importance of observation and research of marine acoustic fields including background acoustic fields is increasingly highlighted. The current marine acoustic recording system generally has short working time, namely days, or more months. And in order to reduce the power consumption, an intermittent working mode is generally adopted, the sound wave acquisition work is started according to the set time as required when the sound wave acquisition work is actually in a dormant state in most of time, and the sound wave acquisition work enters the dormant state again after being recorded for a period of time. The recorded marine sound field information is discontinuous because, instead of being recorded continuously and without interruption, the recording cannot be acquired during the sleep period.
Disclosure of Invention
The invention aims to provide a self-powered device and an ocean background sound field observation system.
In order to achieve the purpose, the invention provides the following scheme:
a self-powered device for a marine background acoustic field observation system, the self-powered device comprising: the system comprises a power supply monitoring circuit, a plurality of groups of lithium battery packs, a charging circuit and a self-powered power supply; wherein the content of the first and second substances,
the multiple groups of lithium battery packs and the charging circuit are connected with the power supply monitoring circuit, the self-powered power supply is connected with the charging circuit, and each lithium battery pack is connected with the charging circuit;
the power supply monitoring circuit is used for monitoring the voltage of each lithium battery pack and sending a charging instruction when the lithium battery pack with the voltage lower than a preset voltage threshold exists; the charging circuit is used for switching a charging object of the self-powered power supply according to the charging instruction so that the self-powered power supply charges the lithium battery pack with the voltage lower than the preset voltage threshold.
Optionally, the self-powered device further includes a standby power supply, the standby power supply is connected to the power supply monitoring circuit, and when the power supply monitoring circuit monitors that the voltage of each lithium battery pack is lower than the preset voltage threshold, the standby power supply is used as a power supply.
Optionally, the standby power supply is a storage battery pack, the storage battery pack is located in the pressure-resistant glass ball, and the pressure-resistant water depth of the pressure-resistant glass ball is greater than or equal to 11000 m.
A marine background acoustic field observation system, the observation system comprising: a plurality of submerged buoy type mounting devices, a bottom-seated device, an anchoring device and a floating ball; wherein the content of the first and second substances,
each submerged buoy type mounting device comprises: the device comprises a hydrophone, an acoustic acquisition unit, an acoustic acquisition cabin body, an acquisition state monitoring unit and the self-powered device; the acquisition state monitoring unit comprises an acquisition monitoring circuit and a beacon connected with the acquisition monitoring circuit; the self-powered device, the hydrophone and the acquisition monitoring circuit are all connected with the acoustic acquisition unit; the acoustic acquisition unit, the acquisition monitoring circuit, the charging circuit, the multiple lithium battery packs and the power supply monitoring circuit are all positioned in the cabin body of the acoustic acquisition cabin;
the anchoring device comprises a Kevlar rope with clamping rings at two ends, one end of the Kevlar rope close to the seabed is connected with the bottom sitting device, one end of the Kevlar rope close to the sea surface is connected with the floating ball, and each submerged buoy type mounting device is mounted on the Kevlar rope.
Optionally, the pressure-resistant water depth of the acoustic collection cabin body is greater than or equal to 11000 m.
Optionally, the bottom-seating device carries a weight-balancing weight.
Optionally, the bottom seating device includes: the system comprises a full-sea deep hydrophone, a bottom acoustic acquisition unit, a bottom acoustic acquisition cabin body, a bottom self-powered system, a bottom acquisition state monitoring unit, a bottom platform and an acoustic releaser; wherein the content of the first and second substances,
the pressure-resistant water depth of the full-sea deep hydrophone is greater than or equal to 11000m, the bottom-sitting self-powered electronic system is a self-powered device, and the bottom-sitting acquisition state monitoring unit comprises a bottom-sitting acquisition monitoring circuit and a bottom-sitting beacon connected with the bottom-sitting acquisition monitoring circuit; the bottom self-powered device, the full-sea deep-water hydrophone and the bottom acquisition monitoring circuit are all connected with the bottom acoustic acquisition unit; the sitting bottom acoustic acquisition unit, the sitting bottom acquisition monitoring circuit, the charging circuit in the sitting bottom self-powered system, the multiple groups of lithium battery packs and the power supply monitoring circuit are all positioned in the cabin body of the sitting bottom acoustic acquisition cabin;
the full-sea deep hydrophone, the sit-bottom acoustic collection cabin body, the sit-bottom beacon, the acoustic releaser, and a self-powered power supply and a standby power supply in the sit-bottom self-powered electronic system are all arranged on the sit-bottom platform.
Optionally, the receiving sensitivity of the full-sea deep hydrophone is higher than-175 dB.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a self-powered device for an ocean background sound field observation system, which comprises: the lithium battery pack charging system comprises a power supply monitoring circuit, a plurality of lithium battery packs, a charging circuit and a self-powered power supply. The power supply monitoring circuit is used for monitoring the voltage of each lithium battery pack and sending a charging instruction when the lithium battery pack with the voltage lower than a preset voltage threshold exists; the charging circuit can switch a charging object of the self-powered power supply according to the charging instruction so that the self-powered power supply can charge the lithium battery pack with the voltage lower than the preset voltage threshold value, and therefore when the self-powered device is used in the marine background sound field observation system, the self-powered device can continuously supply power to the acoustic acquisition unit, and the marine background sound field observation system achieves the purpose of long-time-sequence continuous observation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a structural block diagram of a self-powered device for a marine background sound field observation system according to an embodiment of the present invention;
fig. 2 is a structural block diagram of an observation system of a marine background sound field according to an embodiment of the present invention;
fig. 3 is a block diagram of a submerged buoy mounted device according to an embodiment of the present invention;
FIG. 4 is a schematic view of a submersible buoy mounting device and an anchoring device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a submersible device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a self-powered device and an ocean background sound field observation system.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a structural block diagram of a self-powered device for an ocean background sound field observation system according to an embodiment of the present invention. As shown in fig. 1, the self-powering device comprises: a power supply monitoring circuit 101, multiple lithium battery packs 102, a charging circuit 103 and a self-powered power supply 104.
The multiple lithium battery packs 102 and the charging circuit 103 are both connected with the power monitoring circuit 101, the self-powered power supply 104 is connected with the charging circuit 103, and each lithium battery pack 102 is connected with the charging circuit 103.
The power supply monitoring circuit 101 is configured to monitor the voltage of each lithium battery pack 102, and send a charging instruction when there is a lithium battery pack 102 with a voltage lower than a preset voltage threshold. The charging circuit 103 is configured to switch a charging object of the self-powered power supply 104 according to the charging instruction, so that the self-powered power supply 104 charges the lithium battery pack 102 with a voltage lower than a preset voltage threshold.
Preferably, the self-powered device further comprises a backup power source 105, the backup power source 105 is connected to the power monitoring circuit 101, and when the power monitoring circuit 101 monitors that the voltage of each lithium battery pack 102 is lower than a preset voltage threshold, the backup power source 105 is used as a power supply to supply power to the whole ocean acoustic observation system. In this embodiment, the backup power source 105 is a storage battery pack, the storage battery pack is located in the pressure-resistant glass ball 110, and the pressure-resistant water depth of the pressure-resistant glass ball 110 is greater than or equal to 11000 m. Preferably, the backup power source 105 is a lithium battery. When the self-powered power supply 104 cannot normally work due to an emergency situation, and the voltage of each lithium battery pack 102 is lower than a preset voltage threshold, the power supply monitoring circuit 101 switches the power supply mode to the standby power supply 105 for supplying power, and the standby power supply 105 can provide power guarantee for the whole ocean acoustic observation system, so that the reliability of the acoustic acquisition system is improved.
Fig. 2 is a structural block diagram of an observation system of a marine background sound field according to an embodiment of the present invention. As shown in fig. 2, the observation system includes: a plurality of submerged buoy type mounting devices 1, a bottom-seated device 2, an anchoring device 3 and a floating ball 4.
Fig. 3 is a block diagram of a submerged buoy mounted device according to an embodiment of the present invention. Fig. 4 is a schematic connection diagram of a submerged buoy type mounting device and an anchoring device according to an embodiment of the present invention. As shown in fig. 3 and 4, each submersible buoy mount apparatus 1 includes: a hydrophone 106, an acoustic acquisition unit 107, an acoustic acquisition chamber 108, an acquisition status monitoring unit 109 and said self-powered device. The collection state monitoring unit 109 includes a collection monitoring circuit 1091 and a beacon 1092 connected to the collection monitoring circuit 1091.
The acquisition monitoring circuit can periodically judge and record the working state of the acoustic acquisition unit 107 according to the data capacity output by the acoustic acquisition unit, such as: the acquisition is normal, abnormal, dormant, etc., such as recording for 1 day/time, 5 days/time, or 15 days/time, and transmits the working state signal of the acoustic acquisition unit 107 to the beacons, each beacon having a built-in power supply. The beacon receives, stores and collects the working state signal of the acoustic collection unit 107 monitored by the monitoring circuit, and the whole system can time the following signals between beacons: the working state of each acoustic acquisition unit 107 is mutually communicated, received and recorded for 1 day/time, 5 days/time or 15 days/time. Communication can be established between any one of the beacons and the deck unit of the scientific investigation ship so as to determine the relative orientation of the whole-sea deep-sea ocean background sound field observation system and the scientific investigation ship. Any one of the beacons which establish communication with the maritime scientific research vessel can transmit the working state of each acoustic acquisition unit 107 to the maritime scientific research vessel, or can specify the beacon at the offshore end in advance to receive and record the working state signals of the acoustic acquisition units 107 transmitted by the other beacons, and finally, the specified offshore beacon transmits the working state of each acoustic acquisition unit 107 to the maritime scientific research vessel. Therefore, the working state of the acoustic acquisition unit is recorded by the acquisition state monitoring unit at regular time, and the working state of the acoustic acquisition unit is transmitted at irregular time by utilizing the communication between the beacon and the scientific investigation ship, so that the defect that the acoustic acquisition state cannot be monitored in the prior art can be overcome, and the scientific investigation ship can effectively monitor the working state of the acoustic acquisition system.
The self-powered device, the hydrophone 106 and the acquisition monitoring circuit are all connected with the acoustic acquisition unit 107. The acoustic acquisition unit 107, the acquisition monitoring circuit 1091, the charging circuit 103, the multiple lithium battery packs 102 and the power supply monitoring circuit 101 are all located in the acoustic acquisition cabin 108. The pressure-resistant water depth of the acoustic collection cabin 108 is larger than or equal to 11000m, and the operation requirement of any depth in any sea area can be met.
The anchoring device 3 comprises a Kevlar rope with clamping rings at two ends, one end of the Kevlar rope close to the seabed is connected with the bottom sitting device, one end of the Kevlar rope close to the sea surface is connected with a floating ball 4, and each submerged buoy type mounting device 1 is mounted on the Kevlar rope. The submerged buoy type mounting device 1 is respectively mounted at the corresponding positions of the Kevlar ropes according to different target depths of marine background noise to be observed, so that flexible layout in the vertical direction is realized, and the marine background noise with different target depths can be observed.
In practical application, the hydrophone 106, the acoustic collection chamber 108, the beacon 1092, the self-powered power supply 104 and the backup power supply 105 are all connected by high-pressure water-resistant sealing inserts, and are fixed on the kevlar pull rope by parts such as a 316 stainless steel metal bracket and a snap ring. The standby power supply 105 and the self-powered power supply 104 are respectively arranged at the same depth of two sides of the Kevlar rope, and the acoustic collection cabin 108 and the beacon 1092 are also respectively arranged at the same depth of two sides of the Kevlar rope to keep balance. The distance between the hydrophone 106 and the acoustic collection chamber 108, the distance between the acoustic collection chamber 108 and the beacon 1092, the distance between the acoustic collection chamber 108 and the seawater battery, the distance between the acoustic collection chamber 108 and the backup power supply 105, and the length of the high-pressure-resistant watertight connector connected between the acoustic collection chamber 108 and the backup power supply 105 must be smaller than the length of the high-pressure-resistant watertight connector connected between the acoustic collection chamber and the backup power supply to.
Fig. 5 is a schematic structural diagram of a submersible device according to an embodiment of the present invention. As shown in fig. 5, the seating device includes: the system comprises a hydrophone 106, an acoustic acquisition unit 107, an acoustic acquisition cabin 108, self-powered equipment, an acquisition state monitoring unit 109, a submersible platform 111 and an acoustic releaser 112 with a built-in power supply.
The hydrophone 106 in the bottom-sitting device is the all-sea deep hydrophone 106, the all-sea deep hydrophone 106 is made of piezoelectric ceramic plates, and the pressure-resistant water depth of the all-sea deep hydrophone 106 is larger than or equal to 11000m, so that the operation requirement of any depth in any sea area is met, and the problem that large depth cannot be broken through in observation of a deep sea background sound field in the prior art is solved. The receiving sensitivity of the full-sea hydrophone 106 is better than-175 dB so as to improve the accuracy of the sampled data. The acquisition state monitoring unit 109 comprises an acquisition monitoring circuit 1091 and a beacon 1092 connected with the acquisition monitoring circuit, wherein the withstand voltage water depth of the beacon 1092 is greater than or equal to 11000 m. The self-powered device, the whole-sea hydrophone 106 and the acquisition monitoring circuit 1091 are all connected with the acoustic acquisition unit 107. The acoustic acquisition unit 107, the acquisition monitoring circuit 1091, the charging circuit 103 in the self-powered device, the multiple lithium battery packs 102 and the power supply monitoring circuit 101 are all located in the acoustic acquisition cabin 108.
In this embodiment, the full-sea hydrophone 106, the acoustic collection chamber 108, the beacon 1092, the acoustic releaser 112, the self-powered power supply 104, the backup power supply 105, and the floating ball 4 are fixed on the submersible platform 111 by a metal bracket and a snap ring made of 316 stainless steel. The Kevlar is connected to the middle shaft of the sitting bottom platform 111. To facilitate signal reception, the whole-sea hydrophone 106, the receiving end of the beacon 1092, and the receiving end of the acoustic release 112 are all positioned above the upper end of the upper layer of the submersible platform 111. The submersible platform 111 is made of corrosion resistant material and is structurally optimized to reduce the weight of the submersible platform 111. The acoustic collection chamber 108, the beacon 1092, and the two acoustic releasers 112 are respectively disposed at positions inside the four upper sides of the seated platform 111. The counter weight blocks are arranged below four corners of the lower end face of the bottom sitting platform 111, the weight of the four counter weight blocks is respectively adjusted to enable the gravity center of the bottom sitting device to be located on the central axis of the bottom sitting platform 111, the marine background sound field observation system is enabled to keep negative buoyancy, the floating ball group at the offshore face end provides local positive buoyancy, the marine background sound field observation device is enabled to be suspended in the sea and perpendicular to the sea bottom, the bottom sitting device is enabled to be sunk in the sea bottom to observe the background noise of the sea bottom, and balance in the actual distribution, operation and recovery processes is guaranteed. The floating ball 4 is arranged on the bottom platform 111, so that the whole-sea deep ocean background sound field observation system can be conveniently recovered. The acoustic releaser 112 receives the release instruction of the scientific investigation ship and releases the balancing weight through the release mechanism, thereby recovering the full-sea deep ocean background sound field observation system. In this embodiment, the two acoustic releasers 112 are connected in parallel, so as to ensure smooth recovery of the full-sea deep ocean background sound field observation system.
In order to save the use cost in practical applications, the acoustic collection chamber 108 near the sea-side end may be made of a material with high corrosion resistance, such as 316 stainless steel, and the acoustic collection chamber 108 of the submersible device may be made of a pressure-resistant alloy material, such as titanium alloy.
In this embodiment, the acoustic acquisition unit 107 includes a front-end driving circuit, an AD conversion circuit, a microcontroller, a storage interface circuit, and a communication module. The input end of the front-end drive circuit is connected with the output end of the hydrophone 106, the output end of the front-end drive circuit is connected with the input end of the microcontroller, the communication module is connected with the output end of the microcontroller, and the microcontroller is connected with an external memory through a memory interface circuit. The microcontroller is an ARM chip.
The power monitoring circuit 101 includes a microcontroller such as an STM32 chip and a lithium battery pack monitoring circuit connected to the microcontroller. In this embodiment, the preset voltage threshold may be set as the normal operating voltage of the acoustic collection unit 107. The lithium battery pack monitoring circuit is used for monitoring the voltage of each group of lithium battery packs 102, and the microcontroller sends corresponding charging instructions to the charging circuit 103 according to the low-voltage information of the lithium battery packs 102 monitored by the lithium battery pack monitoring circuit. The charging circuit 103 sequentially switches the charging target from the power supply device to each group of low-power lithium battery packs 102, and sequentially fills the plurality of groups of low-voltage lithium battery packs 102. Meanwhile, the microcontroller also selects the lithium battery pack 102 which can meet the normal working voltage of the acoustic acquisition unit 107 to supply power to the acoustic acquisition unit 107. If the lithium battery pack 102 meeting the normal working voltage of the acoustic acquisition system does not exist, the microcontroller switches the power supply mode to the standby power supply 105, and the standby power supply 105 is used for supplying power to the acoustic acquisition unit 107.
The self-powered power supply 104 adopts a seawater battery or a ocean current battery, etc., which can convert chemical energy or seawater kinetic energy into electric energy, to provide continuous electric energy for the ocean acoustic observation system, so as to ensure that the ocean acoustic observation system can work effectively for a long time, so that the working time of the system reaches 360 days, and the embodiment takes the seawater battery as an example. The charging circuit 103 can perform voltage stabilization and rectification on the unstable electric energy output by the self-power supply 104, and then charge the lithium battery pack 102.
When the ocean background sound field observation system provided by the invention is used for deep sea observation, the realization process is as follows:
the floating ball, a plurality of submerged buoy type mounting devices and the bottom-sitting device are connected into a chain through an anchoring device, suspended in the sea and vertical to the sea bottom. The bottom-sitting device carries a certain weight of balancing weight and sinks to the seabed to measure the background noise of the seabed. The submerged buoy type mounting devices are respectively mounted at the corresponding positions of the Kevlar ropes according to different target depths of marine background noise to be observed, and flexible layout in the vertical direction is realized so as to observe the marine background noise at different target depths. In this embodiment, the target depths are 50m, 100m, 200m, and 500m in this order. The hydrophones all adopt corrosion-resistant skins, and the hydrophones and the acoustic acquisition cabins can be selected according to the actual working water depth. A common hydrophone with a sensitivity of about-197 dB can be used near the sea surface end, i.e. within 1000m of the sea surface. Higher sensitivity full-sea hydrophones are used at offshore bottoms, e.g. at depths greater than 1000 m. A material with high corrosion resistance, such as 316 stainless steel, may be used for the offshore end acoustic collection module 108, and a pressure-resistant alloy material, such as titanium alloy, may be used for the offshore bottom acoustic collection module 108, so as to save the use cost. The acoustic acquisition unit 107 in the acoustic acquisition cabin 108 sets the gain amplification factor of the corresponding front-end driving circuit according to different mounting depths, for example, the gain amplification factor is set to 1dB at a depth of 50m, to 10dB at a depth of 100m, to 30dB at a depth of 200m, and to 100dB at a depth of 500 m. The beacon is installed on each submersible buoy type mounting device, and communication can be established between any one beacon and a deck unit of the scientific investigation ship so as to determine the relative position of the whole-sea deep-sea ocean background sound field observation device and the scientific investigation ship.
The full-sea-depth ocean background sound field observation system provided by the invention utilizes the self-powered device to continuously provide stable electric energy, solves the problem that the existing ocean observation system cannot work underwater for a long period, and achieves the purpose of continuous observation in a long time sequence. The working state of the acoustic acquisition unit is recorded at regular time by using the acquisition state monitoring unit, and the working state of the acoustic acquisition unit is transmitted at irregular time by using the communication between the beacon and the scientific research ship, so that the defect that the acoustic acquisition state cannot be monitored in the conventional ocean background sound field observation system is overcome. The full-sea-depth ocean background sound field observation system provided by the invention can flexibly arrange the submerged buoy type mounting device in the vertical direction according to the actual operation requirement, thereby greatly improving the utilization rate of equipment and the universality of the observation system. Meanwhile, the high-sensitivity all-sea deep-water hydrophone, the high-pressure-resistant acoustic acquisition cabin and the bottom sitting device overcome the defect that the conventional observation device cannot observe the deep-sea ocean background sound field in a large depth and all-sea depth. Therefore, the full-sea-depth ocean background sound field observation system provided by the invention can continuously and reliably observe the ocean background sound field in a long time sequence, can acquire high-reliability, high-precision, large-depth, long-time-sequence and massive ocean background sound field data, and can establish a high-precision, high-reliability, large-depth and long-period ocean background sound field model based on the sound field data.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (8)
1. A self-powered device for a marine background acoustic field observation system, the self-powered device comprising: the system comprises a power supply monitoring circuit, a plurality of groups of lithium battery packs, a charging circuit and a self-powered power supply; wherein the content of the first and second substances,
the multiple groups of lithium battery packs and the charging circuit are connected with the power supply monitoring circuit, the self-powered power supply is connected with the charging circuit, and each lithium battery pack is connected with the charging circuit;
the power supply monitoring circuit is used for monitoring the voltage of each lithium battery pack and sending a charging instruction when the lithium battery pack with the voltage lower than a preset voltage threshold exists; the charging circuit is used for switching a charging object of the self-powered power supply according to the charging instruction so that the self-powered power supply charges the lithium battery pack with the voltage lower than the preset voltage threshold.
2. The self-powered device according to claim 1, further comprising a backup power source, wherein the backup power source is connected to the power monitoring circuit, and when the power monitoring circuit monitors that the voltage of each lithium battery pack is lower than the preset voltage threshold, the backup power source is used as the power source.
3. The self-powered device according to claim 2, wherein the backup power source is a battery pack, the battery pack is located inside a pressure-resistant glass bulb, and a pressure-resistant water depth of the pressure-resistant glass bulb is greater than or equal to 11000 m.
4. An observation system for a marine background sound field, the observation system comprising: a plurality of submerged buoy type mounting devices, a bottom-seated device, an anchoring device and a floating ball; wherein the content of the first and second substances,
each submerged buoy type mounting device comprises: a hydrophone, an acoustic collection unit, an acoustic collection capsule body, a collection status monitoring unit, and the self-powered device of any one of claims 2-3; the acquisition state monitoring unit comprises an acquisition monitoring circuit and a beacon connected with the acquisition monitoring circuit; the self-powered device, the hydrophone and the acquisition monitoring circuit are all connected with the acoustic acquisition unit; the acoustic acquisition unit, the acquisition monitoring circuit, the charging circuit, the multiple lithium battery packs and the power supply monitoring circuit are all positioned in the cabin body of the acoustic acquisition cabin;
the anchoring device comprises a Kevlar rope with clamping rings at two ends, one end of the Kevlar rope close to the seabed is connected with the bottom sitting device, one end of the Kevlar rope close to the sea surface is connected with the floating ball, and each submerged buoy type mounting device is mounted on the Kevlar rope.
5. The observation system of claim 4, wherein the pressure-resistant water depth of the acoustic collection capsule body is greater than or equal to 11000 m.
6. Observation system according to claim 4, wherein the submersible device carries a weight of counterweight.
7. Observation system according to claim 4, wherein said submersible device comprises: the system comprises a full-sea deep hydrophone, a bottom acoustic acquisition unit, a bottom acoustic acquisition cabin body, a bottom self-powered system, a bottom acquisition state monitoring unit, a bottom platform and an acoustic releaser; wherein the content of the first and second substances,
the pressure-resistant water depth of the full-sea deep hydrophone is greater than or equal to 11000m, the bottom-sitting self-powered electronic system is the self-powered device of claims 2-3, and the bottom-sitting acquisition state monitoring unit comprises a bottom-sitting acquisition monitoring circuit and a bottom-sitting beacon connected with the bottom-sitting acquisition monitoring circuit; the bottom self-powered device, the full-sea deep-water hydrophone and the bottom acquisition monitoring circuit are all connected with the bottom acoustic acquisition unit; the sitting bottom acoustic acquisition unit, the sitting bottom acquisition monitoring circuit, the charging circuit in the sitting bottom self-powered system, the multiple groups of lithium battery packs and the power supply monitoring circuit are all positioned in the cabin body of the sitting bottom acoustic acquisition cabin;
the full-sea deep hydrophone, the sit-bottom acoustic collection cabin body, the sit-bottom beacon, the acoustic releaser, and a self-powered power supply and a standby power supply in the sit-bottom self-powered electronic system are all arranged on the sit-bottom platform.
8. The observation system of claim 7 wherein the full-sea hydrophone has a receive sensitivity better than-175 dB.
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| CN112284354A (en) * | 2020-09-14 | 2021-01-29 | 北京致感致联科技有限公司 | Passive wireless piezoelectric sensor and passive monitoring system |
| CN112987080A (en) * | 2021-04-22 | 2021-06-18 | 自然资源部第一海洋研究所 | Seabed multi-wave seismic source and seabed detection system |
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| CN112987080A (en) * | 2021-04-22 | 2021-06-18 | 自然资源部第一海洋研究所 | Seabed multi-wave seismic source and seabed detection system |
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