39 results about "Acoustic release" patented technology

The invention provides a pipeline blockage positioning method and device, and mainly solves the problems that artificial pipeline blockage detection is difficult and the efficiency is low. The pipeline blockage positioning method is characterized by comprising steps as follows: a detection device consisting of a core control panel, a compressed air pump, a infrasonic wave sensor, a pressure sensor, a temperature sensor, an electromagnetic valve for controlling release of sonic waves, a nozzle valve, an exhaust valve and a connecting pipeline is mounted on a to-be-detected pipeline, and acquires the time difference delta t between the occurrence and echo of an infrasonic wave through an infrasonic wave collection module; after a pipeline blockage positioning calculation module acquires pressure and temperature in the pipeline, a sound velocity calculation module calculates the propagation velocity c of the infrasonic wave in the pipeline, the passing path of the infrasonic wave is shown as follows: L=c*delta t, and the distance between the pipeline blockage position and a pipe orifice is as follows: s=L / 2. The blockage position can be accurately positioned with the method, and the detection efficiency is effectively improved.

The invention discloses a self-floating seabed-based observation platform which comprises a platform housing and a support arranged inside the platform housing, wherein monitoring equipment and acoustic release transponders are mounted on the support, the platform housing comprises an upper layer platform and a lower layer platform, the support is arranged in the upper layer platform, the upper layer platform is detachably connected with the lower layer platform through a mechanical tripping gear, due to the adoption of the technical scheme, the upper platform and the lower platform are combined to form a set of internally-built flow guiding structure, after being put from a water surface, the self-floating seabed-based observation platform can effectively prevent rolling during a falling process, and that an observation platform can fall onto the bottom stably can be ensured; the two shallow water acoustic release transponders are combined together with the mechanical tripping gear, and the two-stage tripping gear is designed, namely each acoustic release transponder can be independent from the upper layer platform, and the upper layer platform and the lower layer platform loaded with equipped can are divorced for floating.

The invention relates to a whole-bottom-material bottom-resting seabed submarine buoy and a measuring system thereof, and belongs to the field of submarine buoys. The submarine buoy comprises a main frame, a counterweight base, a floating body, a pressure shell, a release holder, an acoustic release, a power module, a controller, a radio beacon, an underwater acoustic communication machine, a conductivity-temperature-depth measuring meter, a deep water acoustic Doppler current profiler, a current meter and a gas sensor, wherein the main frame is provided with a plurality of supporting feet, and the counterweight base is provided with a plurality of supporting foot holes; the supporting feet are sleeved with springs and provided with limiting mechanisms, an anchor chain assembly is installed on the counterweight base, and the free end of the anchor chain assembly is connected in the release hook of the acoustic releaser; when the support feet are located in the supporting foot holes, the upper ends of the springs abut against the limiting mechanisms, the lower ends of the springs abut against the counterweight base, and the springs are in a compression state. When the release hook of the acoustic releaser is opened, and the springs provide an upward elasticity for helping the main frame to separate from the seabed mud where the main frame deeply falls, so that the recovery of the detecting instruments on the submarine buoy is achieved.

The invention discloses a training mine for simulating actual anti-mine training. The training mine is characterized in that a training mine body comprises a housing, a fuse unit, a position indication unit, a power supply module, a balancing weight and a control unit, wherein the fuse unit, the power supply module, the balancing weight and the control unit are all fixedly mounted in the housing; the position indication unit is arranged at the upper end of the outside of the housing, and a connecting ring is arranged at the lower end of the outside of the housing; a mooring system comprises a connecting mooring system and a load rejection mooring system; a swivel of the connecting mooring system is connected to the connecting ring at the lower end of the outside of the pressure-resistant housing, one end of a chemical fiber rope is connected with the rotary ring through a shackle, and the other end of the chemical fiber rope is connected with an acoustic release transponder through a shackle; the front end of an anchor chain of the load rejection mooring system is connected with the acoustic release transponder through a shackle, the rear end of the anchor chain of the load rejection mooring system is connected with a ballast anchor through an inactive rope, and a floating ball and a pouring weight are sequentially connected to the anchor chain; the position indication unit consists of a communication module, a module housing and an antenna, and the communication module is connected with the power supply module in the training mine body through a wire; and the antenna is assembled at the upper part of the module housing.

The invention relates to a deep-sea structure release and load rejection system. An acoustic release transponder and an automatic unhooking device are respectively arranged on a deep-sea structure frame; a set of load rejection actuating mechanism is arranged on each of two sides below the automatic unhooking device; each set of load rejection actuating mechanism comprises a long load rejection hook A and a long load rejection hook B; tail ends of the long load rejection hook A and the long load rejection hook B of each set are respectively hinged on an unhooking bracket of the deep-sea structure frame, and ballasts are respectively hung; head ends of the long load rejection hook A and the long load rejection hook B are overlapped with each other; the long load rejection hooks B in the twosets of load rejection actuating mechanisms are respectively connected with connecting cables; the connecting cables on the two long load rejection hooks B are respectively connected with one end ofa common connecting cable; and the other end of the common connecting cable passes through the automatic unhooking device and is hung on the acoustic release transponder. According to the system disclosed by the invention, two load rejection schemes of the acoustic release transponder and the automatic unhooking device are adopted, and delayed load rejection can be performed by adopting the automatic unhooking device when the acoustic load rejection means fails.

The invention discloses a submarine seismic detecting device using satellite transmission. In the detecting device, submarine apparatus and sea surface apparatus are connected by an anchor system. Thesea surface apparatus comprises a sea surface satellite transceiver and a sea surface digital transmission apparatus. The anchor system comprises an armored cable, a floating body in the water, a seasurface connector and a submarine connector. The submarine apparatus comprises a submarine seismograph, a submarine digital transmission apparatus, a bottom anchor weight and an acoustic release transponder. The submarine seismograph collects a submarine vibration signal in real time, and transmits the submarine vibration signal to a shore-based laboratory through the submarine digital transmission apparatus, the armored cable, the sea surface digital transmission apparatus and the sea surface satellite transceiver to realize the real-time detection of the submarine vibration signal. The submarine seismic detecting device using satellite transmission of the invention can be used for real-time detection and transmission of a seismic signal, thereby realizing early warning of disasters suchas earthquake disasters and tsunamis.

A pop-up monitoring base station for seafloor heat flow includes a recovery unit, a discarding unit and a cable chopping mechanism. The recovery unit includes a recovery support, internally accommodating two acoustic release devices provided with closable hooks on bottoms thereof and loaded with floating balls. The discarding unit includes a discarding support, below which a heat flow probe is fixedly connected. The recovery unit and the discarding unit are fixed together through a steel wire rope with two ends connected with the closable hooks at the bottoms of the acoustic release devices. A cable extends from the discarding unit through the cable chopping mechanism fixed on the bottom of the recovery support and connects with the floating balls. The cable can be chopped off and / or pulled out automatically to realize successful separation between the recovery unit and the discarding unit.

The invention relates to a long-term fixed point observation device for a deep-sea ecological process. The long-term fixed point observation device comprises a release and load rejection system, and abattery cabin, a control cabin, a buoyancy ball, an iridium satellite beacon, a light beacon, an ultra-short baseline transponder and a compass cabin arranged on the release and load rejection system. According to the device disclosed by the invention, two load rejection schemes of an acoustic release transponder and an automatic unhooking device are adopted, and delayed load rejection can be performed by adopting the automatic unhooking device when the acoustic load rejection means fails. According to the device, load rejection can be released by virtue of the acoustic release transponder, and can also be released by virtue of an emergency load rejection mechanism. The emergency load rejection mechanism and the acoustic release transponder are in a series form. When the acoustic releasetransponder fails and cannot perform load rejection, the emergency load rejection device can be started to realize load rejection floating, and the safety of the equipment operation is improved.

The invention discloses an ocean current generation based distributed acoustic observation system, the lower end of a main floating body of the system is connected with a multiconductor cable and a bearing steel cable, a floating ball group is added on the middle position of the bearing steel cable, the lower end of the bearing steel cable is connected with an acoustic release transponder, the lowend of the acoustic release transponder is tied with a gravity anchor, and multiple groups of data acquisition and processing units and an ocean current energy generator are respectively connected onthe bearing steel cable in a clamping way through a fastening piece. Each group of the data acquisition and processing unit comprises eight self-capacitance single channel acoustic acquisition instruments, one self-capacitance temperature and depth measurement instrument and one self-capacitance conductivity temperature depth measurement instrument to measure the ocean parameters like seawater temperature, conductivity, depth, and sea noise. The self-capacitance single channel acoustic acquisition instrument and the ocean current energy generator are respectively connected with a multiconductor cable through a watertight connector. The system uses ocean current energy to generate electricity, the electricity is supplied to equipment, and due to the adoption of an underwater minitype collector, each measurement instrument independently acquires, processes and stores information, so that the system can observe underwater for a long period of time.

The invention relates to submarine seismic observation, in particular to a submarine seismograph laying recoverer and a method. The submarine seismograph laying recoverer comprises a deep sea lander frame, an acoustic release mechanism, a floating body material, a communication detection instrument and an OBS device, and the deep sea lander frame sequentially comprises a communication detection instrument mounting frame, a floating body material mounting frame, an OBS mounting frame and a one-way latch mounting frame from top to bottom; the communication detection instrument mounting frame, the floating body material mounting frame, the OBS mounting frame and the one-way latch mounting frame are all fixedly connected with the vertical supporting rods, and the balance weight is located at the bottom of the frame and connected with the acoustic release mechanism. The OBS device is arranged and recycled, the one-way clamping teeth are arranged between the OBS device and the seabed, the OBS device is prevented from directly colliding with and making contact with the seabed, meanwhile, the OBS device and the seabed are well coupled, and the working quality is guaranteed.

The invention concerns an ocean bottom station, such as an ocean bottom hydrophone (OBH) or an ocean bottom seismometer (OBS), designed to perform in situ measurements, comprising a support structure (2, 3) with positive buoyancy wherewith is associated at least one detachable ballast (4) to bring said support structure to the ocean bottom during a measurement session, the support structure including at least one hydrophone (6), one data acquisition unit (7) for recording measurement data from the hydrophone and a device for releasing said detachable ballast. The invention is characterized in that the data acquisition unit (7) serves to control the releasing device in response to an acoustic release command received by the hydrophone (6).

The invention discloses a novel rotary de-silting seabed base, comprising a grid seat body, an inner rod, a first drive, a second drive and a float, wherein a casing is mounted above the grid seat body, an inner cavity is formed between the inner wall of the casing and the grid seat body, a sleeve is mounted above the center of the grid seat body, the first drive and the second drive are mounted above the grid seat body, the upper part of the grid seat body is provided with a first metal piece and a second metal piece, an acoustic release is mounted below the grid seat body, the acoustic release is located above a weight cement block, and the float is located inside the inner cavity. In the novel rotary de-silting seabed base, when the lower end of the casing is buried by the sludge, the sleeve rotates on the outer side of the inner rod under the driving of the two drives, and the sleeve moves upwards with the inner rod under the guiding action of the spiral thread, which causes the grid seat body to be gradually separated from the weight cement block, so that the casing is pulled out of the sludge.

The invention discloses a deep sea bottom-supported observation station capable of being automatically recovered and relates to the technical field of seabed landing, releasing and recovery. The deepsea bottom-supported observation station capable of being automatically recovered comprises a buoyancy recycling system; guide columns are arranged at the top end of a bottom-supported bracket system;the guide columns and the buoyancy recycling system are slidingly arranged; a tensioning nut is arranged on the buoyancy recycling system; a spring sleeves the guide column; one end of the spring abuts against the tensioning nut; the other end of the spring abuts against the bottom-supported bracket system; a shaft seat remaining piece is fixedly arranged on the bottom-supported bracket system; aslide groove is formed in the bottom end of the shaft seat remaining piece; an acoustic release transponder is fixedly arranged under the buoyancy recycling system; one end of an anchor chain is arranged on the acoustic release transponder; the two ends of a rotating ring are arranged at the free end of the anchor chain in a sleeving manner; a pin shaft is fixedly arranged on the rotating ring; and the pin shaft is slidingly arranged in the slide groove of the shaft seat remaining piece. The deep sea bottom-supported observation station capable of being automatically recovered has the beneficial effects that the impact borne on an expensive apparatus during landing on the seabed can be reduced to guarantee that the apparatus can be normally used during landing and the buoyancy recycling system can also be released and recovered; and the reuse of the apparatus can also be guaranteed.

The invention discloses a deep sea sound wave acquiring device and a method. The device comprises a pressure withstanding watertight cabin, a transducer mounting rack, a seafloor base and an acoustic release. The pressure withstanding watertight cabin and the transducer mounting rack are both fixedly arranged on the seafloor base. The acoustic release is fixedly chained on the seafloor base through anchor chains. The releasing end of the acoustic release has a weight block fixed through the anchor chains. The pressure withstanding watertight cabin is sealed therein with a high precision time-clock source, a battery and its management system, a data storage unit, a controller, a digital signal processing unit, an analog digital conversion unit, a low-frequency signal pre-processing unit, a middle-frequency signal pre-processing unit, and a high-frequency signal pre-processing unit. The device and the method of the invention can be applied to record sound waves of different frequency bands on a deep sea, and are suitable to acquire the sound wave signals that are broadcast via the two media of both water body and the seafloor. Therefore, sound wave responses from seafloor geological activities, water body activities and biological activities can be recorded, making the device and the method widely applied in maritime investigation and research.

The invention discloses a satellite transmission marine magnetic force detection device. In the detection device, seabed equipment is connected with sea surface equipment by virtue of an anchor system; the sea surface equipment comprises a sea surface satellite transceiving device and a sea surface data transmission device; the anchor system comprises an armour cable, an underwater floating body,a sea surface connecting piece and a seabed connecting piece; the seabed equipment comprises a seabed seismograph, a seabed data transmission device, a non-magnetic bottom anchor weight and an acoustic release transponder; and a seabed magnetometer and a total field magnetometer respectively acquire magnetic force signals at different depths in the sea and a magnetic force signal at a seabed in real time and send the magnetic force signals to a shore-based laboratory by virtue of the armour cable, the sea surface data transmission device and the sea surface satellite transceiving device sequentially, thus real-time detection on a seabed vibration signal is realized. The satellite transmission marine magnetic force detection device disclosed by the invention can improve open sea marine geomagnetic survey data accuracy of a research vessel.

The invention discloses a simple hydroacoustic positioning method and relates to sonar positioning. In order to realize passive emergency positioning of a deep-sea submersible buoy system, the following technical scheme is provided: an acoustic release transponder as well as a deck unit, a transmitting and receiving transducer and the simple hydroacoustic positioning method matched with the acoustic release transponder is provided, wherein the deck unit has enquiry impulse transmission, return impulse receiving and slope distance measurement and display functions, and the acoustic release transponder is located about 5,000 m below the sea surface and can receive an enquiry acoustic signal and transmit response acoustic impulse. The positioning system is simple and a complex ultra-short baseline system is not required; complex solution of global positioning data of ships is not required for positioning; the method is convenient to implement.

The invention provides a marine floating ball wireless positioning signal emitting device and relates to the field of marine resource monitoring. The marine floating ball wireless positioning signal emitting device comprises a floating ball, an acoustic release transponder, a heavy block, a rack, an antenna telescopic mechanism, a telescopic control mechanism, a strong reflective material board and a wireless signal receiving and sending device, wherein the wireless signal receiving and sending device is sealed in the floating ball; the rack is hinged to the floating ball; the antenna telescopic mechanism is movably connected with the rack; the telescopic control mechanism is fixed to the rack; the control mechanism controls the telescopic movement of the antenna telescopic mechanism; the strong reflective material board is fixed to the rack; the heavy block is connected with the rack through the acoustic release transponder. The self position information can be effectively sent out, a searcher can conveniently and rapidly receive the signals and position the device, and the device can be applied to information obtaining of resources such as marine hydrology resources and marine benthos resources.

The invention relates to the field of design of a pest trapping and killing system, particularly to an intelligent acoustic wave pest trapping and killing system. A central processing unit system in the system, namely a master controller, acquires corresponding pest data from a pest database after receiving an input instruction, the flight course is determined through the data analysis, then motion control equipment directs an automatic flight processing system to control an unmanned aerial vehicle to move to the specified operation position; then a signal is transmitted to a sub-controller, ahigh frequency acoustic wave converter, an image transmission processing system and an acoustic wave pest trapping system are used to trap and kill the pest, and then automatic acoustic wave killingequipment, namely an acoustic wave release system, an automatic detection processing system and an acoustic wave pest killing system, is used to implement the operation of killing the pest. The invention provides the intelligent acoustic wave pest trapping and killing system, the intelligent acoustic wave pest trapping and killing system is integrally automatically controlled, the labor cost is saved, the working efficiency is improved, the agricultural pollution is avoided, the intelligent acoustic wave pest trapping and killing system is environmentally friendly, saves the energy and protects the environment, the food safety is guaranteed to a greater extent, and the damage to the human body caused by the pesticide is reduced.

The invention discloses a piston type deep sea acoustic release device based on pressure compensation. The acoustic release device includes a release assembly, a pin assembly and a piston assembly, wherein the release assembly includes a first-level lever, a second-level lever, a release support plate and a pin shaft, the pin assembly includes a release device casing, a top cover, a support rod, aconnection pin, a lead screw nut, a lead screw, a coupling, a motor mounting seat, a driving motor and a rear cover, the piston assembly includes a piston and a sealing ring, and the release supportplate and the release device casing are mounted on the top cover through screws. The release device is advantaged in that an internal cavity of the release device casing is filled with hydraulic oil,the piston assembly can slide back and forth to make the hydraulic oil pressure in the release device casing substantially equal to the seawater pressure, the internal and external pressure differenceof the sealing ring is greatly reduced, reliability of the sealing ring is improved, automatic compensation for the deep sea pressure is achieved, moreover, thickness of the release device casing canbe greatly reduced by means of internal oil filling.

The invention relates to a corrosion test device capable of realizing alternating water depth of sample injection, comprising a buoyancy tank, a winch system, a test frame, an automatic wire reel, a base, an acoustic release device and a ballast block; the winch system is placed in the buoyancy tank, Open the sea hole at the bottom of the buoy, the rope of the winch system passes through the sea hole and connects with one end of the test frame, and the other end of the test frame is connected with the automatic wire reel through another rope; the automatic wire reel is connected with the base The top is fixed, and the bottom of the base is connected to the ballast block through the acoustic release device. The invention has the advantages of simple structure, convenient use and easy assembly and disassembly. The invention can realize the alternate change of the water depth position of the test frame in the marine environment corrosion test through the buoy box, the winch system, the main cable, the test frame, the automatic wire reel and the concrete ballast block. The invention can be used for the corrosion aging performance research of materials and coatings under the condition of alternating water depth, and solves the problem that the current marine environment corrosion test device cannot be applied to the working condition of alternating water depth.

The invention belongs to the technical field of ocean equipment, and particularly discloses an ocean bottom seismograph, which comprises a shell, an instrument mounting frame, a monitoring device and an auxiliary recovery device, and the instrument mounting frame comprises a mud blocking plate and a lifting lug; the monitoring device comprises an instrument bin device and an electromagnetic acoustic release device, the electromagnetic release device is provided with a permanent magnet and an electromagnet, and the magnetic force of the electromagnet and the magnetic force of the permanent magnet repel each other; and according to the ocean bottom seismograph adopting the structural design, the counterweight assembly can be efficiently released through the arrangement of the electromagnetic release device, instrument recovery is achieved, meanwhile, electric energy can be saved, and only when the instrument needs to be recovered, the counterweight assembly needs to be released, and then the electromagnet needs to be powered. Besides, through the arrangement of the shell and the instrument mounting frame, various problems caused by the adoption of a traditional glass floating ball mode design are effectively solved, then the resistance of the ocean bottom seismograph is greatly reduced, the noise reduction level is effectively improved, and then the quality of collected data is improved to a certain extent.

The invention provides a split acoustic release device and release mechanism used in a subsurface buoy, the split acoustic release device comprises an underwater acoustic communication set underwater unit, a controller and a release part, and the release part comprises an upper connecting frame and a lower connecting frame; the at least one connecting piece is arranged in the upper connecting frame; the electromagnet is arranged in the upper connecting frame; the ferromagnetic disc and the check block are arranged in the upper connecting frame, the connecting rod is connected between the ferromagnetic disc and the check block, and the check block abuts against at least one connecting piece; the upper connecting frame is provided with at least one through hole corresponding to the at least one connecting piece, the lower connecting frame is provided with at least one clamping groove, and under the condition that the electromagnet is not electrified, the at least one connecting piece at least partially extends out of the at least one through hole and is clamped in the at least one clamping groove; and under the condition that the electromagnet is electrified, the electromagnet drives the ferromagnetic disc and drives the stop block to move, so that the at least one connecting piece is separated from the at least one clamping groove. The split acoustic release device provided by the invention at least can provide a lower pressure-resistant requirement.

The invention relates to a whole-bottom-material bottom-resting seabed submarine buoy and a measuring system thereof, and belongs to the field of submarine buoys. The submarine buoy comprises a main frame, a counterweight base, a floating body, a pressure shell, a release holder, an acoustic release, a power module, a controller, a radio beacon, an underwater acoustic communication machine, a conductivity-temperature-depth measuring meter, a deep water acoustic Doppler current profiler, a current meter and a gas sensor, wherein the main frame is provided with a plurality of supporting feet, and the counterweight base is provided with a plurality of supporting foot holes; the supporting feet are sleeved with springs and provided with limiting mechanisms, an anchor chain assembly is installed on the counterweight base, and the free end of the anchor chain assembly is connected in the release hook of the acoustic releaser; when the support feet are located in the supporting foot holes, the upper ends of the springs abut against the limiting mechanisms, the lower ends of the springs abut against the counterweight base, and the springs are in a compression state. When the release hook of the acoustic releaser is opened, and the springs provide an upward elasticity for helping the main frame to separate from the seabed mud where the main frame deeply falls, so that the recovery of the detecting instruments on the submarine buoy is achieved.

The invention relates to an acoustic release control method and device, a releaser and a computer storage medium, and the method comprises the steps: in a monitoring mode, when a release instruction is received, executing a release starting operation; monitoring whether the release starting operation is abnormal or not; if the release starting operation is abnormal and the current electric quantity is smaller than or equal to a preset electric quantity threshold value, stopping executing the release starting operation, and after release stopping information is sent to a deck unit, entering a sleep mode; and if the release starting operation is abnormal and the current electric quantity is greater than a preset electric quantity threshold value, executing the release starting operation again. When the release starting operation is monitored to be abnormal, the instruction of the release starting operation is stopped, so that the releaser can be prevented from being in an invalid working state for a long time, the electric energy consumption of the releaser in an abnormal state is reduced, and the recovery reliability of the underwater equipment is improved.

The invention discloses a self-floating seabed-based observation platform which comprises a platform housing and a support arranged inside the platform housing, wherein monitoring equipment and acoustic release transponders are mounted on the support, the platform housing comprises an upper layer platform and a lower layer platform, the support is arranged in the upper layer platform, the upper layer platform is detachably connected with the lower layer platform through a mechanical tripping gear, due to the adoption of the technical scheme, the upper platform and the lower platform are combined to form a set of internally-built flow guiding structure, after being put from a water surface, the self-floating seabed-based observation platform can effectively prevent rolling during a falling process, and that an observation platform can fall onto the bottom stably can be ensured; the two shallow water acoustic release transponders are combined together with the mechanical tripping gear, and the two-stage tripping gear is designed, namely each acoustic release transponder can be independent from the upper layer platform, and the upper layer platform and the lower layer platform loaded with equipped can are divorced for floating.

The invention discloses a deep sea bottom-supported observation station capable of being automatically recovered and relates to the technical field of seabed landing, releasing and recovery. The deepsea bottom-supported observation station capable of being automatically recovered comprises a buoyancy recycling system; guide columns are arranged at the top end of a bottom-supported bracket system;the guide columns and the buoyancy recycling system are slidingly arranged; a tensioning nut is arranged on the buoyancy recycling system; a spring sleeves the guide column; one end of the spring abuts against the tensioning nut; the other end of the spring abuts against the bottom-supported bracket system; a shaft seat remaining piece is fixedly arranged on the bottom-supported bracket system; aslide groove is formed in the bottom end of the shaft seat remaining piece; an acoustic release transponder is fixedly arranged under the buoyancy recycling system; one end of an anchor chain is arranged on the acoustic release transponder; the two ends of a rotating ring are arranged at the free end of the anchor chain in a sleeving manner; a pin shaft is fixedly arranged on the rotating ring; and the pin shaft is slidingly arranged in the slide groove of the shaft seat remaining piece. The deep sea bottom-supported observation station capable of being automatically recovered has the beneficial effects that the impact borne on an expensive apparatus during landing on the seabed can be reduced to guarantee that the apparatus can be normally used during landing and the buoyancy recycling system can also be released and recovered; and the reuse of the apparatus can also be guaranteed.

The invention discloses a portable deck unit which comprises a case, a case panel installed in the case and an internal structure connected with the case panel. The portable deck unit is characterized in that an indicating lamp and interfaces are arranged on the case panel respectively; and the internal structure comprises a signal processing board, a control processing board connected to the signal processing board, a hard disc and a transmitting circuit board. The portable deck unit has the characteristics of rich interfaces, powerful visualization function and the like, can be applied to a long baseline underwater acoustic positioning system, transmit the interrogating signal at fixed time, and fulfill the inquiry and response ranging function by being matched with an acoustic release transponder, thereby realizing the positioning and the navigation to the underwater targets.

The invention discloses an observation system and a determination method for the amount of resuspension of seabed sediment by deep-sea internal waves. The observation system includes a seabed observation platform, cables and mooring counterweights. Meter, turbidimeter, high-precision temperature, salinity and depth meter and sediment trap. The main floating body and sub-floating body are installed on the cable. The main floating body is located in the middle of the cable and is equipped with an acoustic Doppler current profiler. and a high-precision temperature, salinity and depth gauge, and the mooring mooring counterweight is a gravity anchor with a square frame-shaped slot and a fixed ring. The determination methods include: indoor calibration of instruments, use of auxiliary ships to deploy and recover observation systems, reading observation instrument data and analyzing captured suspended matter components, and determining the amount of resuspension of sediment by internal waves. The invention can be safely and stably placed on the bottom of the deep sea, can realize the observation of marine dynamic environment parameters from the bottom of the sea to the full water depth of the sea surface, and can determine the amount of resuspension of sediment by internal waves.

The invention relates to submarine seismic observation, in particular to a submarine seismograph deployment recovery device and method. Including deep-sea lander frame, acoustic release mechanism, buoyant material, communication detection instrument and OBS device, deep-sea lander frame from top to bottom includes communication detection instrument installation frame, floating body material installation frame, OBS installation frame and one-way bayonet installation The frame, the installation frame of the communication detection instrument, the installation frame of the floating body material, the OBS installation frame, and the one-way bayonet installation frame are all fixedly connected with several vertical support rods, and the counterweight is located at the bottom of the frame, and the counterweight is connected with the acoustic release mechanism. It realizes the deployment and recovery of the OBS device. By setting the one-way locking teeth between the OBS device and the seabed, it avoids the OBS device from directly colliding with the seabed, and at the same time enables a better communication between the OBS device and the seabed. coupling to ensure the quality of work.