CN217034281U - Array type electric field detection device - Google Patents
Array type electric field detection device Download PDFInfo
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- CN217034281U CN217034281U CN202220451233.3U CN202220451233U CN217034281U CN 217034281 U CN217034281 U CN 217034281U CN 202220451233 U CN202220451233 U CN 202220451233U CN 217034281 U CN217034281 U CN 217034281U
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Abstract
The utility model belongs to the technical field of ocean information sensing, and discloses an array type electric field detection device. The instrument cabin is provided with a data transmission interface, the sensor array cable is provided with core wires, the core wires are shielded in a twisted mode in pairs, and watertight sockets are vulcanized on the core wires. In the utility model, signals of each sensor in the array can be coherently accumulated to improve the signal-to-noise ratio, and the electrode distance of the sensors in the array can be hundreds of meters far more than that of a single measurement node, so that the array has long detection distance and wide detection area, and the performance of an electric field detection system can be improved; the sensors and the cables are integrated, so that the sensors are easy to distribute and recover and can be distributed in the attention areas such as the ground, the key roads, ports and the like.
Description
Technical Field
The utility model belongs to the technical field of ocean information sensing, and particularly relates to an array type electric field detection device.
Background
Currently, underwater electric fields are an important exposure source for underwater targets compared to acoustic and other non-acoustic physical fields. The division is carried out according to the frequency band of the signal, and the electric field is mainly divided into: steady state electric fields (corrosion-related electrostatic fields, induction fields) and alternating electric fields (axial frequency electric fields, power frequency electric fields, electric fields generated by electromagnetic equipment radiating outwards, and the like). The characteristics of low frequency, obvious line spectrum characteristics and the like of an axis frequency electric field and an axis frequency magnetic field signal generated by rotation of the propeller can be applied to underwater remote detection; the near field characteristics of a static electric field generated by corrosion and corrosion-resistant current are obvious, the signal-to-noise ratio is strong, the tracking and positioning are convenient, and the method can be applied to the tail end positioning of an underwater array type detection and positioning system.
A large number of electric field detection systems are developed and processed abroad, for example, in the 80's of the last century, an Anagram underwater early warning system (comprising 240 electrodes, wherein the distance between the two electrodes is 250m, and the Angram underwater early warning system can be laid in a 100km range along the shore) developed by the Suiyi VNIIOFI research institute is used for detecting and tracking ship signals. At present, seabed early warning and monitoring networks (comprising electric and magnetic nodes) for detection and attack are developed and arranged in the countries of U.S. and Russia (Essehaville seabed high-speed observation network, K & cm я electromagnetic sea-sealing system, STL underwater warning system, etc.). At present, no corresponding electric field detection array exists in China, and the electric field detection array is blank.
Through the analysis, because related array detection technology research is not developed in China at present, and corresponding electric field detection arrays and technologies are not applied, the requirements of environment information acquisition and underwater target detection cannot be met.
The difficulty in solving the above problems and defects is:
the system comprises an anti-interference technology for long-distance transmission of each electric field sensor in the array, a synchronization technology for multi-channel signal acquisition, and a combined processing and target detection technology for multi-sensor signals.
The significance of solving the problems and the defects is as follows:
the method can fill the blank of China in the field of underwater electric field array detection, and provides technical support for marine environment detection and underwater target detection.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an array type electric field detection device.
The utility model is realized in such a way that an array type electric field detection device is provided with an instrument cabin; the instrument cabin is internally provided with a signal acquisition processor and a battery, the instrument cabin is connected with a sensor array cable through a watertight plug, and the sensor array cable is connected with an electric field sensor.
Further, a data transmission interface is arranged on the instrument cabin.
Further, the electric field sensor is an Ag/AgCl electrode.
Further, the sensor array cable is provided with a core wire, the core wire is shielded in a twisted manner, and a watertight socket is vulcanized on the core wire.
Furthermore, the signal acquisition processor is provided with an A/D conversion module, the A/D conversion module is connected with a first filter, and the first filter is connected with a first preamplifier;
the A/D conversion module is connected with a second filter, and the second filter is connected with a second preamplifier;
the A/D conversion module is connected with a third filter, and the third filter is connected with a third preamplifier.
Furthermore, the A/D conversion module is connected with a CPU processor, and the CPU processor is respectively connected with the data storage module and the communication module.
By combining all the technical schemes, the utility model has the advantages and positive effects that:
the utility model is used for paying attention to sea area arrangement, collecting an electric field in a marine environment and detecting targets in water, and solves the problems of environmental information acquisition and target detection.
In the utility model, signals of each sensor in the array can be subjected to coherent accumulation to improve the signal-to-noise ratio, and the electrode distance of the sensors in the array can be hundreds of meters far greater than that of a single measurement node, so that the array has long detection distance and wide detection area, and the performance of an electric field detection system can be improved; the sensor and the cable are integrated, so that the device is easy to distribute and recover and can be distributed in the attention areas such as the land, the important road, the harbor and the like.
The utility model adopts the watertight cable to vulcanize the watertight socket, and the way of cooperating with the watertight connector of the sensor can realize the separate storage of the sensor and the watertight cable, so as to meet the requirements of the electric field sensor for saline soaking and light shielding, reduce the storage difficulty, and install the sensor on the cable when in use, thereby not only ensuring the performance of the sensor, but also being flexible and convenient to use.
The modularized signal acquisition and processing modules can be increased according to the channel requirements, the data storage, transmission and signal detection functions can be increased according to the requirements, one set of acquisition and processing modules can meet the requirements of different application scenes, and the application range of the array type electric field detection system is enlarged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an array-type electric field detection device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of an array type electric field detection system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of vulcanization of a watertight socket for a sensor array cable according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a signal acquisition processor according to an embodiment of the present invention.
In the figure: 1. an instrument pod; 2. a sensor array cable; 3. an electric field sensor; 4. a signal acquisition processor; 5. a battery; 6. a watertight socket; 7. a first preamplifier; 8. a first filter; 9. an A/D conversion module; 10. a CPU processor; 11. a second preamplifier; 12. a second filter; 13. a third preamplifier; 14. a third filter; 15. a data storage module; 16. and a communication module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In view of the problems in the prior art, the present invention provides an array type electric field detecting device, which is described in detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the array-type electric field detection device provided by the embodiment of the present invention is provided with an instrument chamber 1, and a signal collection processor 4 (the whole system noise is lower than 5nV/sqrt (Hz) @1Hz) and a battery 5 are installed inside the instrument chamber 1. The instrument cabin 1 is connected with a sensor array cable 2 through a watertight plug, and the sensor array cable 2 is connected with an electric field sensor 3. The instrument cabin 1 is an instrument cabin with a watertight function, an interface for data transmission is reserved on the instrument cabin 1, and the electric field sensor 3 is an Ag/AgCl electrode (electrode noise is lower than 1nV/sqrt (Hz) @1 Hz).
The sensor array cable 2 is suitable for the number of cable cores according to the number of the mounted sensors, the core wires in the cable are shielded in a twisted-pair mode, and the sensor array cable 2 is a tensile watertight cable. According to the required interval (2-200 m) of the sensor, a watertight socket 6 corresponding to a watertight plug at the tail part of the sensor is vulcanized on each core wire, and the schematic diagram of the joint of a pair of twisted pairs is shown in figure 3.
As shown in fig. 4, the signal acquisition processor according to the embodiment of the present invention is provided with an a/D conversion module 9, the a/D conversion module 9 is connected to a first filter 8, and the first filter 8 is connected to the first preamplifier 7.
The a/D conversion module 9 is connected to a second filter 12, and the second filter 12 is connected to a second preamplifier 11. The a/D conversion module 9 is connected to a third filter 14, and the third filter 14 is connected to a third preamplifier 13. The A/D conversion module 9 is connected with a CPU processor 10, and the CPU processor 10 is respectively connected with a data storage module 16 and a communication module 17.
The first preamplifier 7, the first filter 8, the a/D conversion module 9, the CPU processor 10, the second preamplifier 11, the second filter 12, the third preamplifier 13, the third filter 14, and the communication module 16 are connected to the battery 5, respectively.
The signal acquisition processor has the functions of pre-amplification, filtering, A/D conversion, signal detection, data storage and transmission; the modularized design is adopted, 3 channels are used as minimum units, the number of the channels of the detection array is freely selected and matched according to the number of the channels, and the built-in ship electric field signal detection can be used for carrying out signal detection on electric field data of each channel. The data transmission can be realized by a network cable, 485 or USB mode.
The working principle of the utility model is as follows: the electric field sensor 3 collects the electric field of the marine environment and detects the target in water. The electric field sensor 3 transmits the acquired data to the signal acquisition processor 4 through the sensor array cable 2, and the signal acquisition processor 4 performs pre-amplification, filtering, A/D conversion, signal detection, data storage and transmission on the signals.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the embodiments of the present invention, and the scope of the present invention should not be limited thereto, and any modifications, equivalents and improvements made by those skilled in the art within the technical scope of the present invention as disclosed in the present invention should be covered by the scope of the present invention.
Claims (6)
1. An array type electric field detection device, characterized in that the array type electric field detection device is provided with:
an instrument pod;
the instrument cabin is internally provided with a signal acquisition processor and a battery, the instrument cabin is connected with the sensor array cable through a watertight plug, and the sensor array cable is connected with an electric field sensor.
2. The array type electric field detection device of claim 1, wherein the instrument chamber is provided with a data transmission interface.
3. The array type electric field detection device of claim 1, wherein the electric field sensor is an Ag/AgCl electrode.
4. The arrayed electric field sensor of claim 1, wherein the sensor array cable is provided with core wires, the core wires are shielded by a twisted pair between them, and watertight sockets are vulcanized on the core wires.
5. The array type electric field detection device of claim 1, wherein the signal acquisition processor is provided with an a/D conversion module, the a/D conversion module is connected with a first filter, and the first filter is connected with a first preamplifier;
the A/D conversion module is connected with a second filter, and the second filter is connected with a second preamplifier; the A/D conversion module is connected with a third filter, and the third filter is connected with a third preamplifier.
6. The array type electric field detection device of claim 5, wherein the A/D conversion module is connected to a CPU processor, and the CPU processor is respectively connected to the data storage module and the communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220451233.3U CN217034281U (en) | 2022-03-02 | 2022-03-02 | Array type electric field detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220451233.3U CN217034281U (en) | 2022-03-02 | 2022-03-02 | Array type electric field detection device |
Publications (1)
| Publication Number | Publication Date |
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| CN217034281U true CN217034281U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220451233.3U Active CN217034281U (en) | 2022-03-02 | 2022-03-02 | Array type electric field detection device |
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| CN (1) | CN217034281U (en) |
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- 2022-03-02 CN CN202220451233.3U patent/CN217034281U/en active Active
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