Detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall

A communication device, electromagnetic coupling technology, applied in the direction of telephone communication, electrical components, sensors, etc., to achieve the effect of light weight, long-term communication, and simple structure

Active Publication Date: 2009-10-21
SUZHOU JIANGHAI COMM DEV IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a separate passive electromagnetic coupling intercom communication device that can penetrate the metal warehouse wall, the purpose of which is to solve the problem of voice intercom communication through the metal warehouse wall and overcome the shortcomings of the existing intercom communication methods

Method used

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  • Detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall

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Embodiment

[0028] Embodiment: A separate passive electromagnetic coupling intercom communication device that can penetrate the metal warehouse wall

[0029] Such as figure 1 As shown, the intercom communication device includes a passive intercom terminal 1, an intercom relay 2 and a matching circuit.

[0030] The passive intercom terminal 1 is mainly composed of a moving coil speaker 4, a first induction coil 5, a first iron core 6 and a magnetic button 7, and the two ends of the first induction coil 5 are correspondingly connected to the moving coil speaker 4 The two terminals can change the impedance value of the coil by adjusting the length of the first induction coil 5 to achieve impedance matching with the moving coil speaker 4. The first iron core 6 adopts a "C" type structure, and its model is 1J85 The first induction coil 5 is wound on the first iron core 6. The active end of the magnetic button 7 is provided with a permanent magnet 18. The operation of the magnetic button 7 can...

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Abstract

The invention relates to a detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall. A passive talkback terminal and a talkback relay are mounted at one end of two-way talkback channels, a moving coil speaker of the passive talkback terminal is connected with a first induction coil in series, the first induction coil is wounded on a first iron core, a second induction coil of the talkback relay is wounded on a second iron core, a magnetic button is used for leading the relay to switch over direction of voice communication via a magnetic control switch, electromagnetic coupling is carried out between the first iron core wounded with coils in the passive terminal and the second iron core wounded with coils in the talkback relay to transfer acoustical signal to solve various defects of prior communication manners in the operation on special occasions and realize voice talkback communication screened by metal silo wall.

Description

technical field [0001] The invention relates to a voice intercom communication device, in particular to a separate passive electromagnetic coupling intercom communication device capable of penetrating metal warehouse walls. The device is suitable for objects such as ships, large metal airtight containers, and shielded warehouses, and can realize voice intercom communication between personnel inside and outside the warehouse through the metal warehouse wall. Background technique [0002] In actual life and work, people usually use wired or wireless communication devices to realize voice intercom communication in distance and space. However, in some special operations isolated by the metal warehouse wall, the existing communication means cannot realize normal voice intercom communication, which brings inconvenience to the work. For example, for ships, maintenance personnel may dive into deep water to check certain parts of the bottom of the ship or remove entanglements on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M11/02H04R9/06
Inventor 周景华樊文生倪苏平金凡
Owner SUZHOU JIANGHAI COMM DEV IND
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