TW202016775A - Demagnetization analysis system of ship cable layout reducing the influence of electromagnetic interference on the precision machinery - Google Patents

Abstract

This creation relates to a demagnetization analysis system of ship cable layout. It is mainly provided for ship owners to input the relevant information before the power supply grid of ship is built. This system will output a cable arrangement with minimum electromagnetic interference as the reference basis of the cable arrangement for ship owners, thereby reducing the influence of electromagnetic interference on the precision machinery.

Description

Demagnetization analysis system for ship cable installation

The creation of the present invention relates to a demagnetization analysis system for ship cable layout, in particular to an arrangement determination system for reducing electromagnetic interference of ship cables.

According to this, Electromagnetic Interference (EMI) mainly affects electronic equipment by means of electromagnetic radiation or current-carrying conductors (such as power cords and cables). For example, for communication equipment, it may cause problems such as bad signals, such as radios. , Radar, etc., and for other electronic equipment, it may cause damage to internal components, such as electronic switches, processors, etc. For the power supply grid, electromagnetic interference comes most from the current-carrying conductor, especially for the ship's power supply grid, because today's ships add many precision navigation equipment, automation equipment, and a large number of electrical equipment, in order to take into account the ship The safety of navigation, the influence of such electromagnetic interference should not be ignored or neglected.　　 However, the most commonly used methods for reducing electromagnetic interference in land-based power supply grids are (1) shielding: installing shielding equipment on ship equipment to limit the influence of power lines or magnetic lines of force within a certain range. (2) Ground. (3) Filtering: install filtering equipment to allow the power cord or cable to allow only a certain frequency band signal to pass or prevent a specific frequency band from passing. However, due to the following characteristics of the ship's power supply grid: (1) Space limitation: The space that can be used by the ship's power system is far less than that of the land-based power system. The electrical equipment is arranged in a limited space, which promotes short feeder lines and low line impedance. The short-circuit current of the electrical system is higher than that of the terrestrial power system of the same capacity. (2) Strict electrical equipment specifications: Due to the dangerous marine environment, the stability requirements of electrical equipment procurement are higher than those of the land power system. (3) Limited capacity: The ship's power system is an independent power system, and the stability of power quality is more susceptible to load fluctuations. (4) Low chance of change: After the ship is built, the ship's electrical system is limited to insufficient available space, so it is more difficult to modify or expand. Due to the above characteristics of the ship's power supply grid, it is difficult to apply the aforementioned means of reducing electromagnetic interference to the ship's power supply grid. Since the method of reducing electromagnetic interference still has a balanced circuit method, it means that the two wires in a two-wire circuit and all circuits connected to the two wires have a symmetrical structure to ground or other wires, and the corresponding impedances are equal, so that The noise voltages on the load cancel each other out. In consideration of the characteristics of the aforementioned ship, the creator of the present invention believes that the balanced circuit method should be included in the design considerations before the ship's power supply grid is built, so as to reduce the overall electromagnetic interference phenomenon, and he starts to think about the solution.

In view of the deficiencies described in the prior art, the creator of the present invention proposes a solution, which relates to a demagnetization analysis system for ship cable installation, including: an input terminal: the input terminal can be used to input the ship power supply grid design drawing , And a cable parameter data, the ship's power supply grid design drawing includes cable distribution design data for a cabin. A cable layout database: 　　 The cable layout database includes a plurality of cable layout locations. A processing unit: 　　 The processing unit is electrically connected to an output terminal, the input terminal, and the cable layout database. The processing unit writes an electromagnetic interference calculation program that can be executed by the processing unit: according to the cable The distributed design data analyzes the section where the two cables are located adjacent to each other to obtain a data to be analyzed. Take the data to be analyzed and the cable parameter data to calculate the electromagnetic interference status of the data to be analyzed under the condition of the cable placement position. The lightest of various electromagnetic interference states can obtain the cable arrangement suggestion data of a cabin, and control the output end to output the cable arrangement suggestion data. This, through the creation of the present invention, before the construction of the internal power supply grid of the ship, the cable distribution design data can be analyzed in advance to analyze the adjacent cables in the data to provide a minimum electromagnetic interference arrangement to allow the builder The arrangement of each cable can be determined and arranged in advance, thereby reducing the overall electromagnetic interference problem to solve the deficiencies described in the prior art.

With the aid of the drawings, the following describes the structure, features and embodiments of the creation of the present invention, so that your reviewers have a better understanding of the creation of the present invention. Please refer to the first figure, the creation of the present invention relates to a demagnetization analysis system for ship cable routing, including: an input terminal (1): 　　Please refer to the first image and the second image, the input terminal (1) can be For input of the ship's power supply grid design (2), the current flow data of each cable, and a cable parameter data, the ship's power supply grid design (2) includes the cable distribution design data of a cabin. The cable parameter data preferably includes: the relative permeability data of each layer material in a cable, the conductivity data of each layer material in a cable, and the diameter data of each layer material in a cable. During processing, the system was able to determine the best cable arrangement. However, the preferred presentation of the ship power supply grid design drawing (2) can be seen in the second drawing. A cable layout database (3): 　　Please refer to the first figure, the cable layout database (3) includes a plurality of cable layout positions, and each layout position preferably includes a first to a fourth cable layout position, please cooperate Refer to Figures to Figures, the following describes various placements: two first cables (31) juxtaposed to define a horizontal arrangement (32), two first cables (31) juxtaposed and above the middle of the two first cables A second cable (33) is provided to jointly define a stacking arrangement (34); as shown in the third figure A, the first cable arrangement position represents a horizontal arrangement (32); as in the third figure B, the first The second cable arrangement position represents the horizontal arrangement of the two vertical stacks (32); as shown in the third C diagram, the third cable arrangement position represents the stacked arrangement of the two vertical stacks (34); as the third D diagram, the first The four cable layouts represent two horizontally stacked stacks (34). A processing unit (4): Please refer to the first figure, the processing unit (4) is electrically connected to an output terminal (5), the input terminal (1), and the cable layout database (3), the processing The unit (4) writes an electromagnetic interference calculation program, which can be executed by the processing unit (4): According to the cable distribution design data, the segment (21) adjacent to the two cables is analyzed to obtain a data to be analyzed , Take the data to be analyzed and the cable parameter data, and calculate the electromagnetic interference state of the data to be analyzed in the state of each cable arrangement, and obtain the recommended data of the cable arrangement of a cabin in the lightest electromagnetic interference state, and The output terminal (5) is controlled to output the cable arrangement suggestion data. In addition, the square part in the second figure is an illustration of a power supply unit (23), and the straight line connecting the power supply unit (23) is an illustration of a cable. Secondly, through the creation of the present invention, the user only needs to input the ship power supply grid design drawing (2) and the cable parameter data before the ship power supply grid is built. Then, the system will start to analyze the ship power supply grid The design drawing detects the adjacent cables in the design drawing to obtain the data to be analyzed. In addition, the number of the data to be analyzed is not limited to one. However, this manual only takes the number of the data to be analyzed as one to explain The advantages and characteristics of this creation. When the data to be analyzed is obtained, the system will then calculate the electromagnetic interference status of the data to be analyzed under the conditions of various layout methods according to the layout of various cables in the cable layout database (3). Electromagnetic interference is the smallest arrangement method, and finally the cable arrangement proposal data is output through the output terminal (5). Second, the user can determine the cable arrangement of each part through the cable arrangement recommendation data. Without the need to install additional components to reduce electromagnetic interference, the overall electromagnetic interference problem can be effectively reduced, especially for important precision machinery. As far as the cabin is concerned, this creation can effectively avoid problems such as errors or distortion caused by electromagnetic interference in the equipment or system. Not only that, because the cable parameters of various cables are different, the use of this creation is also used to adjust the cost of cable purchase and electromagnetic interference. The reference basis for the purchase of c\p value between levels. In addition, the output terminal (5) can be a display screen, a photocopier, or the like. In addition, the magnitude of the electromagnetic interference will also be affected by the different current flow in each cable under various placement positions. Therefore, the present invention believes that when judging the magnitude of electromagnetic interference in various placement positions, Preferably, the current flow direction of each cable should be considered. Therefore, the creation of the present invention can be further implemented as follows: taking the data to be analyzed, the current flow data, and the cable parameter data, and calculating the location of the data to be analyzed on each cable. State of electromagnetic interference in the state. In summary, the creation of the present invention is indeed in line with industrial utilization, and it has not been seen in publications or public use prior to the application, nor is it known to the public, and it is non-obvious and easy to understand, and meets the requirements of patentability. Application.　　 However, what has been stated above is a preferred embodiment of the invention creation in the industry, and any changes made in accordance with the patent application scope of the invention creation are within the scope of the claim of this case.

(1): input terminal (2): ship power supply grid design (21): section (22): cabin (23): power supply unit (3): cable layout database (31): first cable (32) : Horizontal arrangement (33): second cable (34): stacked arrangement (4): processing unit (5): output

The first figure is the schematic diagram of the connection of the components created by the present invention. The second figure is the schematic diagram of the design of the ship's power supply grid created by the present invention.

(1): input terminal

(3): Cable layout database

(4): Processing unit

(5): output

Claims (4)

A demagnetization analysis system for ship cable installation, including: an input terminal: a ship power supply grid design drawing and a cable parameter data can be input, the ship power supply grid design drawing includes a cable distribution design data of a cabin; a cable layout database : Includes a plurality of cable layout locations; a processing unit: electrically connects an output terminal, the input terminal, and the cable layout database, the processing unit writes an electromagnetic interference calculation program, which can be executed by the processing unit : According to the cable distribution design data, analyze the two cables adjacent to each other to obtain a data to be analyzed, take the data to be analyzed, and the cable parameter data, and calculate the electromagnetic of the data to be analyzed in the state of cable placement Interference status, get the cable arrangement suggestion data of a cabin in the lightest of various electromagnetic interference states, and control the output end to output the cable arrangement suggestion data. As described in item 1 of the scope of the patent application, the cable cable demagnetization analysis system, wherein the cable parameter data includes: the relative permeability data of each layer material in a cable, the conductivity data of each layer material in a cable, and a cable The diameter information of each layer material. As described in item 1 or item 2 of the scope of the patent application, the cable cable demagnetization analysis system, wherein the cable routing database includes a first to a fourth cable routing location; two parallel cables define a horizontal routing, Two first cables are juxtaposed and a second cable is arranged above the middle of the two first cables to jointly define a stacking arrangement; the first cable arrangement position represents a horizontal arrangement; the second cable arrangement position represents two vertical directions The horizontal arrangement of the stack; the third cable arrangement position represents the two vertical stacking arrangement; the fourth cable arrangement position represents the two horizontal stacking arrangement. As described in item 3 of the scope of the patent application, the cable cable demagnetization analysis system, where the input terminal can be used to input the current flow data of each cable; the electromagnetic interference calculation program can be further executed by the processing unit: take the pending analysis The data, the current flow data, and the cable parameter data respectively calculate the electromagnetic interference state of the data to be analyzed in the state of the cable placement.

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