Coupling type leakage coaxial cable capable of realizing indoor security and protection

A leakage coaxial cable, coupling type technology, applied in anti-theft alarms, electromagnetic wave detection, electric action alarms, etc., can solve the problem of short operating distance

Inactive Publication Date: 2019-12-03
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the slot 5 is much smaller than the wavelength, the electromagnetic field is diffracted through the small hole, and the weak electromagnetic field is radiated externally, and the action distance is short (one to two meters)

Method used

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  • Coupling type leakage coaxial cable capable of realizing indoor security and protection
  • Coupling type leakage coaxial cable capable of realizing indoor security and protection
  • Coupling type leakage coaxial cable capable of realizing indoor security and protection

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Embodiment Construction

[0030] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0031] Such as figure 1 , Figure 4-7 As shown, a coupled leaky coaxial cable that can realize indoor security can be arranged along several cables (such as 2 or 4 cables), or more cables can be arranged side by side at equal intervals according to application requirements, and the spacing is generally 30 to 50 cm. , other values ​​can also be adopted according to application requirements (for example, d=30cm, to ensure that the leakage signals of the adjacent slots between two adjacent cables are coupled to each ...

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Abstract

The invention relates to a coupling type leakage coaxial cable capable of realizing indoor security and protection. The leakage coaxial cable comprises a plurality of leakage coaxial cable units whichare arranged side by side at equal intervals; a plurality of notches are formed in the leakage coaxial cable parts at equal intervals in the axial direction; and certain included angles are arrangedthe notch directions of the adjacent leakage coaxial cable parts and thus radiation signals of every two adjacent leakage coaxial cable parts are coupled to maximize the front lobe and minimize the rear lobe. Therefore, a radiation characteristic problem of the coupled leakage coaxial cable meeting different application scene requirements is solved. A plurality of leakage cable slotting structuresare provided, so that the front lobe of near-field radiation of the leakage cable meets the requirement of a detection angle; and since the rear lobe is far smaller than the front lobe, false triggering is avoided when a partition wall room walks next to the wall after the leakage cable is buried in the wall.

Description

technical field [0001] The invention relates to a signal transmission coaxial cable, in particular to a coupling leakage coaxial cable which can realize indoor security. Background technique [0002] With the improvement of people's living standards, people began to pursue the modernization of family life, the comfort and safety of the living environment, etc. For this reason, smart home is also born. Security technology is an indispensable technology in the Internet of Things and smart home systems, and it is widely used in residential and indoor home monitoring, home burglar alarms and other fields. However, the current smart home security products, especially anti-theft alarm products, have two main problems that lead to a high rate of false alarms and false negatives: one is that adjacent rooms or next door are easy to trigger by mistake; the other is that animals and people cannot be distinguished (resulting in extremely The alarm is triggered by pets or mice, etc.). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/24G01V3/12
CPCG01V3/12G08B13/2497
Inventor 袁明辉张全盛段铜川王文勇韩臣
Owner UNIV OF SHANGHAI FOR SCI & TECH
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