Marine environment physical field measuring equipment

Abstract

The utility model discloses a marine environment physical field measuring device comprising a housing, and an external interface unit, a physical field signal preprocessing unit, a physical field acquisition and recording unit and a digital signal processing unit which are arranged in the housing from top to bottom in sequence. The external interface unit comprises a first partition plate and a plurality of external interfaces arranged on the first partition plate; the physical field signal preprocessing unit comprises a second partition plate, and a magnetic sensor, an attitude sensor and a physical field signal preprocessing circuit which are arranged on the second partition plate; the physical field acquisition and recording unit comprises a third partition plate and a physical field acquisition and recording circuit arranged on the third partition plate; the digital signal processing unit comprises a fourth partition plate and a digital signal processing circuit arranged on the fourth partition plate. By utilizing the scheme of the utility model, the integration of equipment can be realized, different physical field signals can be simultaneously acquired, and characteristic parameters under different physical fields can be extracted in real time.

Description

TECHNICAL FIELD

[0001] The utility model generally relates to the ocean environment parameter collection technical field. More specifically, the utility model relates to a kind of ocean environment physical field measuring equipment. BACKGROUND

[0002] With the continuous deepening of marine research, the attention to various physical fields in the marine environment is increasing. This requires comprehensive measurement of multiple physical fields in the marine environment.

[0003] However, traditional measurement methods have been unable to meet modern needs, especially when multiple physical fields need to be measured simultaneously, the hardware devices of various physical field collection systems are numerous, greatly reducing the flexibility of measurement and the safety and reliability of the system. Existing ocean physical field measurement equipment has some limitations, such as limited measurement methods, single type of measured physical field, and usually does not involve acoustic, magnetic, water pressure, electric field, etc. characteristic parameters of ships.

[0004] In view of this, it is urgent to provide an ocean environment physical field measurement scheme to realize simultaneous measurement of multiple ocean environment physical field parameters using integrated equipment. UTILITY MODEL CONTENT

[0005] To solve at least one or more of the above-mentioned technical problems, the utility model provides an ocean environment physical field measurement scheme in multiple aspects.

[0006] The utility model provides a kind of ocean environment physical field measurement equipment, comprising: shell and the physical field signal preprocessing unit, physical field acquisition recording unit and digital signal processing unit are sequentially arranged from top to bottom in shell interior, and the external interface unit is arranged in the shell, the external interface unit, the physical field signal preprocessing unit, the physical field acquisition recording unit and the digital signal processing unit are interconnected by interboard connector;The external interface unit includes first baffle and multiple external interfaces arranged on the first baffle;The physical field signal preprocessing unit includes second baffle and is arranged on the second baffle magnetic sensor, attitude sensor and physical field signal preprocessing circuit;The physical field acquisition recording unit includes third baffle and is arranged on the third baffle physical field acquisition recording circuit;The digital signal processing unit includes fourth baffle and is arranged on the fourth baffle digital signal processing circuit.

[0007] In some embodiments, the multiple external interfaces include a hydroacoustic transducer interface, a water pressure sensor interface, an electric field sensor interface, a radio interface, a network interface, and a battery interface.

[0008] In some embodiments, the physical field signal pre-processing circuit includes an acoustic signal processing circuit, a magnetic signal processing circuit, and an electric field signal processing circuit; the acoustic signal processing circuit includes a first impedance matching circuit, a high-pass filter circuit, a first amplification circuit, a low-pass filter circuit, a second impedance matching circuit, and a detection circuit, the high-pass filter circuit is connected with the impedance matching circuit, the first amplification circuit is connected with the high-pass filter circuit, the low-pass filter circuit is connected with the first amplification circuit, the second impedance matching circuit is connected with the low-pass filter circuit, and the detection circuit is connected with the second impedance matching circuit; the magnetic signal processing circuit includes a first follower, a differential circuit, and a second follower, the differential circuit is connected with the first follower, and the second follower is connected with the differential circuit; and the electric field signal processing circuit includes a second amplification circuit, a band-pass filter circuit, and a third follower, the band-pass filter circuit is connected with the second amplification circuit, and the third follower is connected with the band-pass filter circuit.

[0009] In some embodiments, the magnetic signal processing circuit is connected with the magnetic sensor.

[0010] In some embodiments, the attitude sensor is interconnected to the physical field acquisition and recording unit through an inter-board connector.

[0011] In some embodiments, the physical field acquisition and recording circuit includes an A / D conversion chip, a first processor, a second processor, a plurality of communication interfaces, and a storage device, the A / D conversion chip is connected to the physical field signal pre-processing circuit, the first processor is connected to the A / D conversion chip, the second processor is connected to the first processor, the plurality of communication interfaces are connected to the second processor, and the storage device is connected to the second processor.

[0012] In some embodiments, the plurality of communication interfaces include a host computer communication interface and an attitude sensor communication interface; the host computer communication interface includes an ETH PHY interface, a USB PHY interface, and a USART interface; and the attitude sensor communication interface adopts one or more of a UART interface, an SPI interface, a CAN interface, a GPIO interface, an I2C interface, a DAC interface, and an ADC interface.

[0013] In some embodiments, the digital signal processing circuit comprises a first MCU chip, a second MCU chip and a third MCU chip; the first MCU chip is connected to the water pressure sensor interface, the physical field acquisition and recording unit and the radio station interface through an inter-board connector, and is connected to the time chip and the FLASH chip through an interface; the second MCU chip is connected to the first MCU chip through a serial port and an IO port, and is connected to the underwater acoustic transducer interface, the electric field sensor interface and the attitude sensor through an inter-board connector; the third MCU chip is connected to the second MCU chip through a serial port and an IO port, and is connected to the magnetic sensor through an inter-board connector.

[0014] By means of the marine environment physical field measuring device provided above, the device is integrated by means of the external interface unit, the physical field signal preprocessing unit, the physical field acquisition and recording unit and the digital signal processing unit integrated in the same shell, different physical field signals can be simultaneously acquired, and the characteristic parameters under different physical fields can be extracted in real time. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are shown by way of example and not limitation, and identical or corresponding reference numerals are used to indicate identical or corresponding parts, in which:

[0016] Figure 1 An exemplary composition diagram of the marine environment physical field measuring device according to an embodiment of the present application is shown;

[0017] Figure 2 An exemplary composition diagram of the acoustic signal processing circuit according to an embodiment of the present application is shown;

[0018] Figure 3 An exemplary composition diagram of the magnetic signal processing circuit according to an embodiment of the present application is shown;

[0019] Figure 4 An exemplary composition diagram of the electric field signal processing circuit according to an embodiment of the present application is shown;

[0020] Figure 5 An exemplary composition diagram of the physical field acquisition and recording circuit according to an embodiment of the present application is shown;

[0021] Figure 6 An exemplary composition diagram of the digital signal processing circuit according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0023] It should be understood that the terms "comprising" and "including" used in the specification and claims of the present application indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0024] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should be further understood that the term "and / or" used in the specification and claims of the present application means one or more of the associated listed items and all possible combinations thereof, and includes these combinations.

[0025] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] Figure 1 An exemplary constituent structure diagram of the marine environment physical field measurement device 100 according to an embodiment of the present application is shown.

[0027] As shown in Figure 1 , the marine environment physical field measurement device includes a housing 110 and, inside the housing 110, an external interface unit, a physical field signal preprocessing unit, a physical field acquisition and recording unit, and a digital signal processing unit arranged in sequence from top to bottom. Specifically, the external interface unit, the physical field signal preprocessing unit, the physical field acquisition and recording unit, and the digital signal processing unit are interconnected through an inter-board connector. The external interface unit includes a first partition 120 and a plurality of external interfaces 121 arranged on the first partition. The physical field signal preprocessing unit includes a second partition 130 and a magnetic sensor 131, an attitude sensor 132, and a physical field signal preprocessing circuit arranged on the second partition 130. The physical field acquisition and recording unit includes a third partition 140 and a physical field acquisition and recording circuit arranged on the third partition 140. The digital signal processing unit includes a fourth partition 150 and a digital signal processing circuit arranged on the fourth partition 150.

[0028] Specifically, the plurality of external interfaces 121 include a hydrophone transducer interface 1211, a water pressure sensor interface 1212, an electric field sensor interface 1213, a radio station interface 1214, a network interface 1215, and a battery interface 1216.

[0029] In an embodiment of the present application, the hydrophone transducer interface 1211 is connected to a hydrophone transducer that receives a hydroacoustic signal of a ship in the sea, and the hydrophone transducer interface 1211 transmits the hydroacoustic signal to the physical field signal preprocessing unit and the digital signal processing unit through the inter-board connector.

[0030] In an embodiment of the present application, the water pressure sensor interface 1212 is connected to a water pressure sensor that is used to monitor a water pressure signal and measure a water pressure field characteristic parameter of a ship in the sea, and the water pressure sensor interface 1212 transmits the water pressure signal to the physical field signal preprocessing unit and the digital signal processing unit through the inter-board connector.

[0031] In an embodiment of the present application, the electric field sensor interface 1213 is connected to an electric field sensor that is used to collect an electric field signal and measure an electric field characteristic parameter of a ship in the sea, and the electric field sensor interface 1213 transmits the electric field signal to the physical field signal preprocessing unit and the digital signal processing unit through the inter-board connector.

[0032] In an embodiment of the present application, the radio station interface 1214 is connected to a radio station, and the radio station interface 1214 transmits data received by the physical field signal preprocessing unit and data processed by the digital signal processing unit to the radio station through the inter-board connector, and the radio station transmits the data received by the physical field signal preprocessing unit to a client.

[0033] In an embodiment of the present application, the network interface 1215 is connected to an external network, and the network interface 1215 transmits data received through the external network to the physical field signal preprocessing unit through the inter-board connector.

[0034] In an embodiment of the present application, the battery interface 1216 transmits a voltage output by a battery to the physical field signal preprocessing unit, the physical field acquisition and recording unit, and the digital signal processing unit through the inter-board connector.

[0035] In an embodiment of the present application, the hydrophone transducer interface 1211, the water pressure sensor interface 1212, the electric field sensor interface 1213, the radio station interface 1214, the network interface 1215, and the battery interface 1216 are all provided with anti-misplug devices to avoid potential risks caused by incorrect connection of devices that do not match the corresponding interfaces.

[0036] In the embodiments of the present application, the underwater acoustic transducer, the water pressure sensor, the electric field sensor, the radio station, the battery and the like all adopt existing devices, and the specific models thereof are not limited herein.

[0037] In the embodiments of the present application, the physical field signal preprocessing circuit includes an acoustic signal processing circuit, a magnetic signal processing circuit and an electric field signal processing circuit.

[0038] In the embodiments of the present application, the specific components involved in the acoustic signal processing circuit can be referred to Figure 2 .

[0039] Figure 2 An exemplary component diagram of the acoustic signal processing circuit of the embodiments of the present application is shown.

[0040] As shown in Figure 2 , the acoustic signal processing circuit includes a first impedance matching circuit 210, a high-pass filter circuit 220, a first amplification circuit 230, a low-pass filter circuit 240, a second impedance matching circuit 250 and a detection circuit 260. The high-pass filter circuit 220 is connected with the first impedance matching circuit 210. The first amplification circuit 230 is connected with the high-pass filter circuit 220. The low-pass filter circuit 240 is connected with the first amplification circuit 230. The second impedance matching circuit 250 is connected with the low-pass filter circuit 240. The detection circuit 260 is connected with the second impedance matching circuit 250.

[0041] In the embodiments of the present application, the first impedance matching circuit 210 is connected to the aforementioned underwater acoustic transducer interface 1211 to perform impedance matching on the underwater acoustic transducer interface 1211 and the high-pass filter circuit 220. The high-pass filter circuit 220 performs high-pass filtering on the underwater acoustic signal transmitted by the underwater acoustic transducer interface 1211. The first amplification circuit 230 performs gain amplification processing on the underwater acoustic signal subjected to high-pass filtering. The low-pass filter circuit 240 performs low-pass filtering processing on the underwater acoustic signal subjected to gain amplification processing. The second impedance matching circuit 250 performs impedance matching on the low-pass filter circuit 240, the physical field acquisition and recording unit and the detection circuit 260, sends the underwater acoustic signal subjected to low-pass filtering processing to the physical field acquisition and recording unit and the detection circuit 260, and the detection circuit 260 modulates the received underwater acoustic signal to obtain an acoustic envelope signal and sends the acoustic envelope signal to the digital signal processing unit for processing.

[0042] By sequentially performing high-pass filtering, gain amplification processing and low-pass filtering on the underwater acoustic signal, the low-frequency part of the underwater acoustic signal that is not needed is removed by using high-pass filtering, the strength of the underwater acoustic signal is then enhanced by means of a power amplifier, and the residual high-frequency interference of the underwater acoustic signal is removed via low-pass filtering, which not only helps to improve the quality of the final output underwater acoustic signal, but also provides a solid foundation for subsequent processing.

[0043] In the embodiment of the present application, the working frequency of the acoustic signal processing circuit is 10Hz-10kHz, and the amplification factor is 20dB. The first impedance matching circuit 210 and the second impedance matching circuit 250 can be the same or different, which is not limited in the present application. The first impedance matching circuit 210, the high-pass filter circuit 220, the first amplification circuit 230, the low-pass filter circuit 240, the second impedance matching circuit 250 and the detection circuit 260 can adopt a first operational amplifier and external resistance and capacitance circuits. The first operational amplifier has a bandwidth of 3MHz, a voltage noise density of 8nV / √Hz, and a standard SOP-8 package.

[0044] In the embodiment of the present application, the specific components involved in the magnetic signal processing circuit can be referred to Figure 3 .

[0045] Figure 3 An exemplary component diagram of the magnetic signal processing circuit of the embodiment of the present application is shown.

[0046] As Figure 3 shown, the magnetic signal processing circuit includes a first follower 310, a differential circuit 320 and a second follower 330, the differential circuit 320 is connected to the first follower 310, and the second follower 330 is connected to the differential circuit 320.

[0047] In the embodiment of the present application, the first follower 310 is connected to the magnetic sensor 131 to perform impedance matching on the magnetic sensor and the differential circuit 320. The differential circuit 320 amplifies the magnetic signal transmitted by the magnetic sensor to enhance the anti-interference ability of the magnetic signal and improve the signal-to-noise ratio. The second follower 330 performs impedance matching on the differential circuit 320 and the physical field acquisition and recording unit, and transmits the signal output by the differential circuit 320 to the physical field acquisition and recording unit. At the same time, the differential circuit 320 outputs the signal to the digital signal processing unit.

[0048] By amplifying the magnetic signal transmitted by the magnetic sensor through the differential circuit 320, the anti-interference ability of the magnetic signal is enhanced and the signal-to-noise ratio is improved, which can improve the quality of the magnetic signal transmitted by the magnetic sensor and provide a basis for subsequent processing.

[0049] In the embodiment of the present application, the first follower 310 and the second follower 330 can be the same or different, which is not limited in the present application.

[0050] In the embodiment of the present application, the first follower 310, the differential circuit 320 and the second follower 330 can adopt a second operational amplifier and external resistance and capacitance circuits. The second operational amplifier has a bandwidth of 1MHz, a static current of 50uA, and a standard SOP-8 package.

[0051] In the embodiment of the present application, the specific components involved in the electric field signal processing circuit can refer to Figure 4 .

[0052] Figure 4 An exemplary component diagram of the electric field signal processing circuit of the embodiment of the present application is shown.

[0053] As shown in Figure 4 , the electric field signal processing circuit comprises a second amplification circuit 410, a band-pass filter circuit 420, and a third follower 430, the band-pass filter circuit 420 is connected to the second amplification circuit 410, and the third follower 430 is connected to the band-pass filter circuit 420.

[0054] In the embodiment of the present application, the second amplification circuit 410 is connected to the electric field sensor interface, the second amplification circuit 410 performs amplification processing on the electric field signal transmitted by the electric field sensor interface, the band-pass filter circuit 420 selects the electric field signal of a specific frequency range after amplification processing and sends it to the digital signal processing unit. The third follower 430 is used for impedance matching between the band-pass filter circuit 420 and the physical field acquisition recording unit, and the signal output by the band-pass filter circuit 420 is transmitted to the physical field acquisition recording unit.

[0055] By amplifying and band-pass filtering the electric field signal, the quality of the electric field signal can be significantly improved, and the extraction efficiency of obtaining useful electric field signals can be improved, thereby providing a guarantee for subsequent processing.

[0056] In the embodiment of the present application, the second amplification circuit 410 can be the same as or different from the first amplification circuit 230, which is not limited in the present application.

[0057] In the embodiment of the present application, the third follower 430 can be the same as or different from the first follower 310 and the second follower 330, which is not limited in the present application.

[0058] In the embodiment of the present application, the second amplification circuit 410, the band-pass filter circuit 420, and the third follower 430 amplification circuit, band-pass filter circuit, and follower can adopt a third operational amplifier and external resistance and capacitance circuit. The 1 / f noise of the third operational amplifier is 0.28uV, and the package is a standard SOP-8.

[0059] In the embodiment of the present application, the aforementioned attitude sensor is interconnected to the physical field acquisition recording unit through an inter-board connector.

[0060] In the embodiment of the present application, the specific components of the aforementioned physical field acquisition recording circuit can refer to Figure 5 .

[0061] Figure 5An exemplary component diagram of the physical field acquisition and recording circuit is shown.

[0062] As shown in the figure, Figure 5 The physical field acquisition and recording circuit includes an A / D conversion chip 510, a first processor 520, a second processor 530, a plurality of communication interfaces, and a storage device 540.

[0063] Specifically, the plurality of communication interfaces include a host computer communication interface 551 and a posture sensor communication interface 552.

[0064] In the embodiment of the present application, the A / D conversion chip 510 is connected to the physical field signal preprocessing unit, which is used to convert the sound signal, magnetic signal and electric field signal processed by the physical field signal preprocessing unit into a digital signal and send it to the first processor 520.

[0065] In the embodiment of the present application, the first processor 520 can adopt an FPGA processor, which is connected to the A / D conversion chip 510 through an IO port.

[0066] In the embodiment of the present application, the second processor 530 can adopt an ARM processor, which is connected to the first processor 520 through an FSMC interface and to the host computer through the host computer communication interface, and to the posture sensor through the posture sensor communication interface.

[0067] In the embodiment of the present application, the storage device 540 adopts a TF memory card and an EMMC memory.

[0068] The multiple data can be collected, recorded and stored through the physical field acquisition and recording circuit, and transmitted to the upper computer, so that the multiple data can be simultaneously collected and processed, when remote or distributed deployment is involved, the collected information is uploaded to the upper computer through network connection, and the advantages of combination of decentralized management and centralized analysis are realized.

[0069] In the embodiments of the present application, the specific composition of the aforementioned digital signal processing circuit can refer to Figure 6 .

[0070] Figure 6 An exemplary composition diagram of the digital signal processing circuit of the embodiment of the present application is shown.

[0071] As Figure 6 shown, the aforementioned digital signal processing circuit includes a first MCU chip 610, a second MCU chip 620 and a third MCU chip 630. The first MCU chip 610 is connected to the aforementioned water pressure sensor interface 1212, the physical field acquisition and recording unit and the radio station interface 1214 through an inter-board connector, and connected to the time chip 640 and the FLASH chip 650 through an interface. The second MCU chip 620 is connected to the first MCU chip 610 through a serial port and an IO port, and connected to the underwater acoustic transducer interface 1211, the electric field sensor interface 1213 and the attitude sensor 132 through an inter-board connector. The third MCU chip 630 is connected to the second MCU chip 620 through a serial port and an IO port, and connected to the magnetic sensor 131 through an inter-board connector.

[0072] In the embodiments of the present application, the first MCU chip 610, the second MCU chip 620 and the third MCU chip 630 can be the same or different, which is not limited in the present application.

[0073] In the embodiments of the present application, the third MCU chip 630 receives the magnetic signal sent by the magnetic sensor 131, and sends the processed magnetic signal to the second MCU chip 620. The second MCU chip 620 extracts features from the magnetic signal sent by the third MCU chip 630, the attitude signal sent by the attitude sensor 132, the underwater acoustic signal sent by the underwater acoustic transducer interface 1211 and the electric field signal sent by the electric field sensor interface 1213, obtains the characteristic parameters of the ship under various physical fields, and sends the characteristic parameters to the first MCU chip 610. The first MCU chip 610 receives the characteristic parameters of the ship under various physical fields, the original data collected by the physical field acquisition and recording unit, and the data sent by the water pressure sensor interface 1212, and transmits the characteristic parameters of the ship under various physical fields and the original data collected by the physical field acquisition and recording unit to the client through the radio station.

[0074] According to the foregoing digital signal processing circuit, the third MCU chip 630 is mainly responsible for receiving signals from the magnetic sensor 131 and sending them to the second MCU chip 620 after preliminary processing, and the second MCU chip 620 is mainly responsible for feature extraction, and then sends the extracted feature parameters to the first MCU chip 610. Such division of labor can reduce the workload of the first MCU chip 610, so that each MCU can focus on specific tasks and improve the efficiency of the entire digital signal processing circuit. At the same time, the computing resources and power consumption configuration of each part can be adjusted according to actual needs.

[0075] According to the foregoing digital signal processing circuit, the second MCU chip 620 obtains magnetic signals, attitude signals, underwater acoustic signals and electric field signals from multiple sources, and then generates more accurate and representative ship feature parameters through feature extraction. It can provide more abundant and reliable information than a single type of sensor, which helps better understand and predict the behavior of ships.

[0076] According to the foregoing digital signal processing circuit, by concentrating the data of different physical quantities to the first MCU chip 610 and finally sending it to the client through the radio station, it ensures that even when some local components fail, critical data can still be safely transmitted.

[0077] In summary, through the marine environment physical field measuring device provided as above, the utility model embodiment sets the external interface unit, the physical field signal preprocessing unit, the physical field acquisition recording unit and the digital signal processing unit integrated in the same shell, which can realize the integration of the device, can simultaneously collect different physical field signals, and can extract feature parameters under different physical fields in real time.

[0078] Although several embodiments of the utility model have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided only by way of example. Those skilled in the art can think of many changes, changes and alternative ways without deviating from the idea and spirit of the utility model. It should be understood that various alternatives to the utility model embodiments described herein can be used in the practice of the utility model. The appended claims are intended to define the scope of protection of the utility model and therefore cover equivalent or alternative solutions within the scope of these claims.

Claims

1. An ocean environment physical field measuring apparatus comprising: The shell and the external interface unit, the physical field signal preprocessing unit, the physical field acquisition recording unit and the digital signal processing unit arranged in the shell from top to bottom in sequence, the external interface unit, the physical field signal preprocessing unit, the physical field acquisition recording unit and the digital signal processing unit are interconnected through an inter-board connector; The external interface unit includes a first partition plate and a plurality of external interfaces arranged on the first partition plate; The physical field signal preprocessing unit includes a second partition plate and a magnetic sensor, an attitude sensor and a physical field signal preprocessing circuit arranged on the second partition plate; The physical field acquisition recording unit includes a third partition plate and a physical field acquisition recording circuit arranged on the third partition plate; The digital signal processing unit includes a fourth partition plate and a digital signal processing circuit arranged on the fourth partition plate.

2. The ocean environment physical field measuring apparatus of claim 1, wherein, The plurality of external interfaces include a hydroacoustic transducer interface, a water pressure sensor interface, an electric field sensor interface, a radio station interface, a network interface and a battery interface.

3. The ocean environment physical field measuring apparatus of claim 1, wherein, The physical field signal preprocessing circuit includes an acoustic signal processing circuit, a magnetic signal processing circuit and an electric field signal processing circuit; The acoustic signal processing circuit includes a first impedance matching circuit, a high-pass filter circuit, a first amplification circuit, a low-pass filter circuit, a second impedance matching circuit and a detection circuit, the high-pass filter circuit is connected with the impedance matching circuit, the first amplification circuit is connected with the high-pass filter circuit, the low-pass filter circuit is connected with the first amplification circuit, the second impedance matching circuit is connected with the low-pass filter circuit, and the detection circuit is connected with the second impedance matching circuit; The magnetic signal processing circuit includes a first follower, a difference circuit and a second follower, the difference circuit is connected with the first follower, and the second follower is connected with the difference circuit; The electric field signal processing circuit includes a second amplification circuit, a band-pass filter circuit and a third follower, the band-pass filter circuit is connected with the second amplification circuit, and the third follower is connected with the band-pass filter circuit.

4. The ocean environment physical field measuring apparatus of claim 3, wherein, The magnetic signal processing circuit is connected with the magnetic sensor.

5. The ocean environment physical field measuring apparatus of claim 1, wherein, The attitude sensor is interconnected to the physical field acquisition recording unit through the inter-board connector.

6. The ocean environment physical field measuring apparatus according to claim 1 or 5, characterized by, The physical field acquisition recording circuit includes an A / D conversion chip, a first processor, a second processor, a plurality of communication interfaces and a storage device, the A / D conversion chip is connected to the physical field signal preprocessing circuit, the first processor is connected to the A / D conversion chip, the second processor is connected to the first processor, the plurality of communication interfaces are connected to the second processor, and the storage device is connected to the second processor.

7. The ocean environment physical field measuring apparatus of claim 6, wherein, The plurality of communication interfaces include a host computer communication interface and an attitude sensor communication interface; The host computer communication interface includes an ETH PHY interface, a USB PHY interface and an USART interface; The attitude sensor communication interface adopts one or more of a UART interface, an SPI interface, a CAN interface, a GPIO interface, an I2C interface, a DAC interface and an ADC interface.

8. The ocean environment physical field measuring apparatus of claim 1, wherein, The digital signal processing circuit comprises a first MCU chip, a second MCU chip and a third MCU chip; The first MCU chip is connected to a water pressure sensor interface, the physical field acquisition and recording unit and a radio station interface through an inter-board connector, and is connected to a time chip and a FLASH chip through an interface; The second MCU chip is connected to the first MCU chip through a serial port and an IO port, and is connected to a water sound transducer interface, an electric field sensor interface and an attitude sensor through an inter-board connector; The third MCU chip is connected to the second MCU chip through a serial port and an IO port, and is connected to a magnetic sensor through an inter-board connector.

Images