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A grounding process for mf/hf system

A technology of grounding point and grounding method, which is applied in the field of MF/HF system grounding technology, can solve problems such as interference and electronic and electrical equipment not working properly, and achieve the effect of reducing grounding impedance

Active Publication Date: 2019-09-10
上海宜通海洋科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Correct grounding can not only suppress the influence of external electromagnetic interference, but also prevent electronic and electrical equipment from emitting electromagnetic waves to the outside; while wrong grounding often introduces very serious interference, and even makes electronic and electrical equipment unable to work normally

Method used

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Embodiment Construction

[0020] Such as figure 2 Shown, the present invention is used for MF / HF system grounding process, comprises the following steps:

[0021] Obtain an iron block, polish the surface of the iron block to remove the oxide layer, and then copper-plate the iron block;

[0022] Obtain a copper sheet, and nickel-plate the iron block and the copper sheet;

[0023] Solder the copper sheet and the iron block together with solder;

[0024] Weld the associated iron block with the iron hull;

[0025] The copper sheet is connected to the ground point of the MF / HF system.

[0026] The copper sheet and the iron block are to be welded on both sides. The maximum length of the copper sheet is 250mm, the minimum width is 50mm, and the minimum thickness is 0.8mm. The length of the iron block is 100mm and the width is 80mm.

[0027] The spectrum of electromagnetic waves can be roughly divided into: power frequency (50Hz / 60Hz), radio frequency or high frequency (1KHz ~ 100MHz) and microwave (gre...

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Abstract

The invention provides an MF / HF system grounding technology. The MF / HF system grounding technology includes the steps: acquiring on iron block, polishing the surface of the iron block to remove the oxide layer, and coppering the iron block; acquiring one copper sheet, and performing nickel plating processing on the iron block and the copper sheet; welding the copper sheet with the iron block through soldering tin; and welding the iron block with a sticker ship body, wherein the copper sheet is connected with the grounding point of an MF / HF system grounding system.

Description

technical field [0001] The invention belongs to the technical field of ship communication, in particular to a grounding process for MF / HF systems. Background technique [0002] GMDSS (Global Maritime Distress and Safety System) is a new maritime communication system launched by IMO after years of research, testing and coordination. The system aims to provide a variety of unimpeded means of communication by adopting technologically advanced equipment so that all kinds of maritime distress can be timely and reliably alarmed, identified and displayed, and the distress information can be sent quickly and effectively to the appropriate rescue or coordinated rescue. Unit (RCC), in order to minimize shipwreck. GMDSS system mainly includes INM-C.VHF and MF / HF system, MF / HF system includes control unit / transceiver unit / antenna and antenna. Such as figure 1 shown. [0003] MF / HF grounding has its particularity that is different from power frequency grounding. The high-frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/64
Inventor 王雪阳孙晓芒
Owner 上海宜通海洋科技股份有限公司
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