Modular multi-beam side-scan sonar system

Abstract

The utility model relates to the technical field of side-scan sonar, in particular to a modular multi-beam side-scan sonar system. Comprising a main electronic cabin and a plurality of receiving watertight cabins, the plurality of receiving watertight cabins are isolated from the main electronic cabin, a main control unit and a transmitting unit are arranged in the main electronic cabin, the main control unit and the transmitting unit are connected through a cable in the main electronic cabin, and the main control unit is further connected with a temperature and humidity sensor, a height measurement sensor, a pressure sensor and an attitude sensor; a transducer and a receiving unit are arranged in each receiving watertight compartment, each transducer comprises m transmitting channels and n receiving channels, and the receiving units are interconnected with the main control unit through cables; and the main control unit transmits a synchronous pulse signal to the transmitting unit, the receiving unit and the height measuring sensor. The receiving unit and the transmitting unit are not in the same electronic cabin, so that the interference of the transmitting unit on the receiving unit can be reduced to the greatest extent, the signal-to-noise ratio is improved, and the detection of the side-scan sonar is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to side scan sonar technical field, concretely relates to a modular multi-beam side scan sonar system. BACKGROUND

[0002] Side scan sonar is the equipment that utilizes echo sounding principle to detect seafloor topography and underwater object, adopts integrated design when designing, namely the sonar analog signal collected is transmitted to the receiving unit of main control cabin through the water-tight cable, the main control unit processes and packs the sonar data and each sensor data and uploads simultaneously, the structural diagram is as shown in Figure 1 The existing side scan sonar structure has the following characteristics:

[0003] 1. the transmitting unit and receiving unit of side scan sonar are in an electronic cabin, and the large current during transmission greatly affects the receiving plate of the receiving unit;

[0004] 2. the signal transmitted in the water-tight cable is the analog signal received by the transducer after amplification, which may introduce new noise and reduce the signal-to-noise ratio;

[0005] 3. compared with single-beam side scan sonar, multi-beam side scan sonar has more channels, and more channels require more cores of water-tight cable, which may reduce the pressure resistance of the entire system and make it difficult to operate in deeper waters.

[0006] In summary, Figure 1 The receiving end of the side scan sonar transmitting end is greatly disturbed, and the multi-beam water-tight cable has poor pressure resistance. Therefore, it is necessary to improve the existing sonar structure to adapt to the operation scene in deep waters. UTILITY MODEL CONTENT

[0007] The utility model solves the problems of reducing the interference of the side scan sonar transmitting end on the receiving end and the problem of the water-tight cable with too many channels having poor pressure resistance.

[0008] In view of the deficiencies of the prior art, the utility model adopts the technical scheme to solve the technical problems: a modular multi-beam side scan sonar system, comprising a main electronic cabin and a plurality of receiving water-tight cabins, the plurality of receiving water-tight cabins are isolated from the main electronic cabin, a main control unit and a transmitting unit are arranged in the main electronic cabin, the main control unit and the transmitting unit are connected by a cable in the main electronic cabin, the main control unit is further connected with a temperature and humidity sensor, an altitude sensor, a pressure sensor and an attitude sensor; a transducer and a receiving unit are arranged in each of the plurality of receiving water-tight cabins, the transducer comprises m transmitting channels and n receiving channels, and the receiving unit is interconnected with the main control unit by a cable; the main control unit sends a synchronous pulse signal to the transmitting unit, the receiving unit and the altitude sensor.

[0009] Preferably, the transmitting unit comprises a signal source board, a power amplifier board and a matching board connected in sequence, the power amplifier board is further connected with an energy storage board, the signal source board is connected with the main control unit, and the matching board is connected with a transmitting channel of the transducer.

[0010] Preferably, the plurality of receiving watertight cabins comprises receiving watertight cabin one, receiving watertight cabin two, receiving watertight cabin three and receiving watertight cabin four, the receiving watertight cabin one comprises receiving unit one and transducer one, the receiving watertight cabin two comprises receiving unit two and transducer two, the receiving watertight cabin three comprises receiving unit three and transducer three, and the receiving watertight cabin four comprises receiving unit four and transducer four.

[0011] Preferably, the receiving unit one comprises a signal conditioning board and a signal acquisition and processing board, the signal conditioning board is connected with the transducer one, and the signal acquisition and processing board is connected with the main control unit; the receiving unit two, the receiving unit three and the receiving unit four are the same in structure as the receiving unit one and are respectively connected with corresponding transducers.

[0012] Preferably, the main control unit outputs working parameters to the transmitting unit, the receiving unit one, the receiving unit two, the receiving unit three and the receiving unit four, and the receiving unit one, the receiving unit two, the receiving unit three and the receiving unit four return sonar data to the main control unit.

[0013] Preferably, the temperature and humidity sensor, the altitude sensor, the pressure sensor and the attitude sensor respectively feed back temperature and humidity data, altitude data, pressure data and attitude data to the main control unit.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The receiving unit adopts modular design and left and right sides are interchangeable, and one of the cabin body circuits does not affect the operation of other circuits after a failure, and the maintenance of the opposite side scanning sonar circuit can be quickly completed by replacing the circuit board and the like, and the main electronic cabin does not need to be disassembled during maintenance.

[0016] 2. The receiving unit and the transmitting unit are not in the same electronic cabin, and the interference of the transmitting unit on the receiving unit can be maximally reduced.

[0017] 3. The receiving unit can be installed as a separate module on other platforms, such as underwater vehicles.

[0018] 4. The distance between the transducer and the receiving unit conditioning circuit is shorter, the signal-to-noise ratio of the signal is high, and it is more conducive to the detection of the side scanning sonar.

[0019] 5. The communication mode between the receiving watertight cabin and the main electronic cabin is changed from analog signal input to network signal, the number of cores of the watertight cable is no longer limited by the number of elements, and the problem of large pressure bearing of the multi-core watertight cable is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of a conventional side-scan sonar structure;

[0021] Figure 2 is a schematic diagram of a side-scan sonar system structure of the present application;

[0022] Figure 3 is a functional block diagram of a receiving unit involved in the system of the present application;

[0023] Figure 4 is a structural block diagram of a transmitting unit involved in the system of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application for various embodiments with various modifications as are suited to the particular use contemplated.

[0025] The sonar system of the present application is distinguished from Figure 1 conventional sonar systems, such as Figure 2 the modular multi-beam side-scan sonar system shown in the figure comprises a main electronic cabin and a plurality of receiving watertight cabins, each of the receiving watertight cabins comprising a receiving unit and a transducer, Figure 2The receiving watertight cabin comprises receiving watertight cabin one, receiving watertight cabin two, receiving watertight cabin three and receiving watertight cabin four, the receiving watertight cabin one is internally provided with transducer one and receiving unit one, the receiving watertight cabin two is internally provided with transducer two and receiving unit two, the receiving watertight cabin three is internally provided with transducer three and receiving unit three, and the receiving watertight cabin four is internally provided with transducer four and receiving unit four; the transducer one, the transducer two, the transducer three and the transducer four are all provided with m transmitting channels and n receiving channels; the receiving unit one, the receiving unit two, the receiving unit three and the receiving unit four are collectively referred to as receiving units hereinafter, and the transducer one, the transducer two, the transducer three and the transducer four are collectively referred to as transducers hereinafter.A main control unit and a transmitting unit are arranged in the main electronic cabin, the main control unit comprises a gigabit network switching board and a main control board, and the main control unit is mainly used for integrated control of electronic modules, communication scheduling, intervention of sensor signals, forwarding of working parameters and packaging and uploading of sonar data. Considering that the echo signals received by the transducer receiving array elements are very weak, in order to reduce the wiring distance between the receiving array elements and the receiving units, the side-scan receiving unit is installed in the watertight cabin at the rear of the side-scan transducer, and is interconnected with the main control unit through a cable. The receiving unit one, the receiving unit two, the receiving unit three and the receiving unit four are the same in structure, and the receiving unit one is taken as an example. Figure 3 Figure 4 The transmitting unit structural diagram is shown in the utility model, the transmitting unit includes signal source board, energy storage board, power amplifier board, matching board, the main control unit gives the working parameter and synchronous signal to the signal source board, the signal source board transmits excitation signal to the power amplifier board, the energy storage board can ensure that the voltage of the transmitting unit circuit is stable, and the transmitting effect is avoided due to voltage fluctuation; the power amplifier board transmits signal to the matching board, the matching board transmits matched signal to the transmitting channel of each transducer, the transmitting unit mainly completes the isolation, driving, detection, power amplification, isolation voltage conversion and matching of side-scan signals, receives the working parameter of the main control unit, generates transducer signal and drives transmitting signal.

[0026] The master control unit sends working parameters to the transmitting unit and the receiving units one, two, three and four, the receiving units one, two, three and four send the received sonar data to the master control unit, the master control unit is connected with a temperature and humidity sensor, an altitude sensor, a pressure sensor and an attitude sensor, and the temperature and humidity sensor, the altitude sensor, the pressure sensor and the attitude sensor transmit the collected data to the master control unit.

[0027] When the sonar system is initialized, the master control unit analyzes and forwards the working parameters to the transmitting unit and the receiving units, when starting to work, the receiving units and the transmitting unit start their corresponding work according to the external synchronization signal sent by the master control unit, after waiting for the end of a single frame work, the receiving units upload the data to the master control unit through the network, the sensor data is collected synchronously according to different working needs, and the collected data is transmitted to the master control unit, and the sonar data is waited for to be packaged, the master control unit packages the sonar data of the four receiving units and the data of each sensor to form an uplink data packet, and the collection of a single frame data is completed.

[0028] The sonar system of the utility model sets the receiving units and the transmitting unit in different cabins, not only avoids the interference of the transmitting unit on the receiving unit, but also sets each receiving unit and the corresponding transducer in the same receiving watertight cabin, so that the wiring distance between the transducer receiving array and the receiving unit is reduced, the signal noise ratio is high, and the reception of echo signals is facilitated. Four receiving watertight cabins are designed in a modular way and can be interchanged left and right, and the failure of one section of cabin circuit does not affect the operation of other circuits, so that the maintenance of the circuit in the receiving watertight cabin can be quickly completed by replacing the circuit board and other ways, and the main electronic cabin does not need to be disassembled during maintenance.

Claims

1. A modular multi-beam side-scan sonar system, characterized in that: It includes a main electronics compartment and multiple watertight receiving compartments, all of which are isolated from the main electronics compartment. The main electronics compartment houses the main control unit and the transmitting unit, which are connected by cables within the main electronics compartment. The main control unit is also connected to temperature and humidity sensors, height sensors, pressure sensors, and attitude sensors. Each of the multiple watertight receiving compartments contains a transducer and a receiving unit. The transducer includes m transmitting channels and n receiving channels, and the receiving units are interconnected with the main control unit via cables. The main control unit sends synchronization pulse signals to the transmitting unit, receiving unit, and height sensor.

2. The modular multi-beam side-scan sonar system as described in claim 1, characterized in that: The transmitting unit includes a signal source board, a power amplifier board, and a matching board connected in sequence. The power amplifier board is also connected to an energy storage board. The signal source board is connected to the main control unit, and the matching board is connected to the transmitting channel of the transducer.

3. The modular multi-beam side-scan sonar system as described in claim 2, characterized in that: The multiple watertight receiving chambers include Watertight Receiving Chamber 1, Watertight Receiving Chamber 2, Watertight Receiving Chamber 3, and Watertight Receiving Chamber 4. Watertight Receiving Chamber 1 includes Receiving Unit 1 and Transducer 1. Watertight Receiving Chamber 2 includes Receiving Unit 2 and Transducer 2. Watertight Receiving Chamber 3 includes Receiving Unit 3 and Transducer 3. Watertight Receiving Chamber 4 includes Receiving Unit 4 and Transducer 4.

4. The modular multi-beam side-scan sonar system as described in claim 3, characterized in that: Receiver Unit 1 includes a signal conditioning board and a signal acquisition and processing board. The signal conditioning board is connected to Transducer 1, and the signal acquisition and processing board is connected to the main control unit. Receiver Unit 2, Receiver Unit 3, and Receiver Unit 4 have the same structure as Receiver Unit 1 and are each connected to their respective transducers.

5. The modular multi-beam side-scan sonar system as described in claim 4, characterized in that: The main control unit outputs operating parameters to the transmitting unit, receiving unit 1, receiving unit 2, receiving unit 3, and receiving unit 4. Receiving units 1, 2, 3, and 4 return sonar data to the main control unit.

6. The modular multi-beam side-scan sonar system as described in claim 1, characterized in that: Temperature and humidity sensors, height sensors, pressure sensors, and attitude sensors feed back temperature and humidity data, height data, pressure data, and attitude data to the main control unit, respectively.

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