WO2022116780A1

WO2022116780A1 - Life buoy

Info

Publication number: WO2022116780A1
Application number: PCT/CN2021/129458
Authority: WO
Inventors: 郑洪振; 芦永超; 孙耀志
Original assignee: 广东福顺天际通信有限公司
Priority date: 2020-12-04
Filing date: 2021-11-09
Publication date: 2022-06-09
Also published as: EP4257475A1; CN112407196B; EP4257475A4; CN112407196A

Abstract

A life buoy, comprising a life buoy body (11). A plurality of radar reflectors are provided in the life buoy body (11); the plurality of radar reflectors are distributed in an annular array by using the center of the life buoy body as a center; each radar reflector comprises a Luneburg lens (12) and a reflecting piece (13); the Luneburg lens (12) is made of a foaming dielectric material; a reflecting surface is formed on the reflecting piece (13); and the reflecting surface of the reflecting piece of each radar reflector is attached to the surface of the Luneburg lens (12). The life buoy is simple in structure, convenient to use, and good in safety, and further can display a large image on a radar screen, thereby avoiding search and rescue omission.

Description

a life buoy

technical field

The invention relates to the technical field of lifesaving equipment, in particular to a lifebuoy.

Background technique

Life jackets, life buoys and lifeboats are commonly used marine life-saving devices. Life jackets, lifebuoys and lifeboats are all floating on the sea by the effect of buoyancy, so that people can float on the sea and wait for rescue in the case of falling into the water. In order to facilitate patrol personnel to find people in distress, some current life-saving devices are also equipped with signal transmitters, so that patrol personnel can find people in distress through signal receiving equipment. Since there are signal transmitters in the life-saving devices, such a structure The life-saving device also needs to be equipped with a power supply. Such a life-saving device has a complex structure and needs to be charged when it has not been used for a long time, and it is also prone to power failure during use, which is extremely inconvenient to use.

In addition, some life-saving devices are now equipped with a signal reflection mechanism. Such life-saving devices, such as the technical solution of the patent application No. 2017213670053 entitled "A Marine Radar Search and Rescue Device", include: a life jacket body and a small radar angle reflector , the small radar angle reflectors are evenly arranged on the chest and shoulders of the life jacket body; the small radar angle reflectors include an equilateral triangle vertical metal reflector I, an equilateral triangle vertical metal reflector II, and a square horizontal metal reflector sheet and a plastic protective cover, the equilateral triangle vertical metal reflection sheet 1 and the equilateral triangle vertical metal reflection sheet 2 are fixedly connected in a cross shape along the midline, and the equilateral triangle vertical metal reflection sheet 1 and the equilateral triangle vertical metal reflection sheet The bottom edge of the second reflector is fixedly connected with the two diagonals of the square horizontal metal reflector to form a quadrangular-shaped small radar angle reflector. and four corners. The small radar angle reflector with such a structure has the following shortcomings when applied to the lifebuoy: First, the small radar angle reflector has a small reflection range, and it is easy to be missed during the search; second, the small radar angle reflector has a sharp cone shape. It is easy to scratch the drowning person, and is not safe and inconvenient to use.

technical solutions

The purpose of the present invention is to provide a lifebuoy, the lifebuoy has the advantages of simple structure, scientific design, convenient use, large image can be displayed on the radar screen, avoiding the omission of search and rescue, good safety and convenient use.

The technical scheme of the present invention is realized as follows: a lifebuoy, including a lifebuoy body, is characterized in that a number of radar reflectors are arranged in the lifebuoy body, and the plurality of radar reflectors are distributed in a circular array with the center of the lifebuoy body as the center, Each radar reflector includes a Lumberg lens and a reflector. The Lumberg lens is made of a foamed dielectric material. A reflecting surface is formed on the reflector. The reflecting surface of the reflector of each radar reflector is the same as the Lunberg lens surface fit.

Further, among the several radar reflectors: a part of the radar reflectors are directional radar reflectors, and the other part of the radar reflectors are omnidirectional radar reflectors; the omnidirectional radar reflectors and the directional radar reflectors are distributed alternately.

Further, the reflective surface of the reflector of the directional radar reflector is a concave surface of a hemispherical structure; the reflector of the omnidirectional radar reflector is a sheet metal ring, and the reflector of the omnidirectional radar reflector wraps around. Mounted on its Lumberg lens, the inner surface of the reflector of the omnidirectional radar reflector is the reflecting surface.

Further, each directional radar reflector is provided with a central reflection direction L1; the spherical center of the Lunberg lens of each radar reflector and the center of the lifebuoy body are coplanar, and the common plane is called the reference plane; several directional radar reflections The reflectors are divided into two groups, which are group A and group B, among which: the center reflection direction L1 of the directional radar reflector belonging to group A is away from the reference plane, and the center reflection direction of the directional radar reflector belonging to group B L1 faces away from the other side of the reference plane.

Further, the respective central reflection directions L1 of the directional radar reflectors of Group A and the directional radar reflectors of Group B are both perpendicular to the reference plane.

Further, there are 2 directional radar reflectors in group A, which are the first radar reflector and the second radar reflector; there are also 2 directional radar reflectors in group B, which are the third radar reflector respectively. and the fourth radar reflector; the first radar reflector, the second radar reflector, the third radar reflector and the fourth radar reflector are sequentially arranged around the center of the lifebuoy body, wherein: the center reflection direction of the first radar reflector L1 and the central reflection direction L1 of the third radar reflector are both perpendicular to the reference plane; the central reflection direction L1 of the second radar reflector and the reference plane form an included angle α, which is between 10° and 80°; The center reflection direction L1 of the four radar reflectors forms an included angle β with the reference plane, and the included angle β ranges from 10° to 80°.

Further, each omnidirectional radar reflector is provided with a central axis L3; the number of the omnidirectional radar reflectors is 4, which are the fifth radar reflector, the sixth radar reflector, and the seventh radar reflector respectively. The fifth radar reflector, the sixth radar reflector, the seventh radar reflector and the eighth radar reflector are arranged in sequence around the center of the lifebuoy body, wherein: the central axis of the fifth radar reflector L3 is perpendicular to the reference plane, the central axis L3 of the sixth radar reflector and the reference plane form an included angle γ, and the included angle γ is between 10° and 80°. The central axis L3 of the seventh radar reflector and the reference plane are arranged in parallel, and the central axis L3 of the eighth radar reflector forms an included angle θ with the reference plane, and the included angle θ is between 10° and 80°.

beneficial effect

Beneficial effects of the present invention: the present invention is provided with a radar reflector composed of a Lumberg lens and a reflector in the lifebuoy body, such that a person who falls into the water carries the lifebuoy to escape during use. The radar wave emitted by the personnel's radar transmitter passes through the Lumberg lens of the radar reflector and is reflected by the reflector, so that the radar wave will be refracted into the air in a spherically symmetrical manner and amplified, such a small target A large image will be displayed on the radar screen, so that the search and rescue personnel can easily find the drowning person, do not need to be charged during use, and will not stab the drowning person, so that the invention has the advantages of simple structure, scientific design, convenient use, A large image can be displayed on the radar screen, avoiding the omission of search and rescue, good safety and easy to use.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1. FIG.

FIG. 2 is a schematic diagram of the shape after being cut at A-A and straightened in FIG. 1 .

FIG. 3 is a schematic structural diagram of Embodiment 2. FIG.

FIG. 4 is a schematic structural diagram of Embodiment 3. FIG.

FIG. 5 is a schematic view of the shape after being cut and straightened at B-B in FIG. 4 .

FIG. 6 is a reflection pattern of the radar wave after the radar wave passes through the directional radar reflector when the embodiment 1 is in use.

FIG. 7 is a reflection pattern diagram of the radar wave after passing through the omnidirectional radar reflector when the embodiment 1 is in use.

Description of reference numerals: 11- lifebuoy body; 12- Lumberg lens; 13- reflector; 14- directional radar reflector; 15- omnidirectional radar reflector; 16- group A; 17- group B; 18- Group C; Group 19-D;

21-radar reflector; 22-Lomber lens; 23-floating segment;

31-group A; 311-first radar reflector; 312-second radar reflector; 32-group B; 321-third radar reflector; 322-fourth radar reflector; 33-lifebuoy body; 34-th Five radar reflectors; 35 - sixth radar reflector; 36 - seventh radar reflector; 37 - eighth radar reflector.

Embodiments of the present invention

Example 1

As shown in FIG. 1 and FIG. 2 , a lifebuoy of this embodiment includes a lifebuoy body 11 , and a number of radar reflectors are arranged in the lifebuoy body 11 , and the plurality of radar reflectors are in a circular array with the center of the lifebuoy body 11 as the center distributed, each radar reflector includes a Lumberg lens 12 and a reflector 13, the Lunberg lens 12 is made of a foamed medium material, the reflector 13 is a metal sheet, and a reflector is formed on the reflector 13, each The reflection surface of the reflector 13 of each radar reflector is attached to the surface of the Lumberg lens 12 . The foamed dielectric material used to make the Lunberg lens 12 is an existing material, and the foamed dielectric material is the same as the technology described in the patent number 201910867980.8 applied for by the applicant and the name is “dielectric material and dielectric material production method”. The scheme is the same, so it will not be described in detail here. When in use, if a person who falls into the water carries the lifebuoy to escape, during the subsequent search and rescue operation, the radar wave emitted by the radar transmitter of the search and rescue personnel passes through the Lumberg lens 12 of the radar reflector and is reflected by the reflector 13. And the radar wave will be refracted into the air and enlarged in a spherical center symmetrical manner, so that a small target will present a large image on the radar screen, so that the search and rescue personnel can easily find the drowning person, and do not need to use it. The lifebuoy has the advantages of simple structure, scientific design, convenient use, large images can be displayed on the radar screen, avoiding the omission of search and rescue, good safety and convenient use.

In order to make this lifebuoy better reflect radar waves during use, so that in the search and rescue operation, the radar waves injected into the lifebuoy from any direction can be reflected. As shown in Figure 2, several radar reflections In the reflector: a part of the radar reflectors are directional radar reflectors 14, and the other part of the radar reflectors are omnidirectional radar reflectors 15; the omnidirectional radar reflectors 15 and directional radar reflectors 14 are distributed in phases. During use, the reflection pattern of the radar wave after passing through the directional radar reflector 14 is shown in FIG. 6 , and the reflection pattern of the radar wave after passing through the omnidirectional radar reflector 15 is shown in FIG. 7 .

In order to make the structures of the directional radar reflector 14 and the omnidirectional radar reflector 15 in this lifebuoy more reasonable, as shown in FIG. 2 , the reflecting surface of the reflector 13 of the directional radar reflector 14 is a hemispherical structure The reflector 13 of the omnidirectional radar reflector 15 is a sheet metal ring, the reflector 13 of the omnidirectional radar reflector is wound around the Lumberg lens 12, and the reflector of the omnidirectional radar reflector The inner surface of 13 is a reflective surface.

In order to enable the directional radar reflector 14 in the lifebuoy to reflect the radar waves incident in different directions, as shown in FIG. 2 , each directional radar reflector 14 is provided with a central reflection direction L1, and the central reflection direction L1 Refers to the virtual directivity line that simultaneously passes through the spherical center of the Luneburg lens 12 of the directional radar reflector 14 and the lowest point of the reflection surface of the directional radar reflector 14; The center of the lifebuoy body 11 is coplanar, and the common plane is called the reference plane; a number of directional radar reflectors 14 are divided into two groups, which are Group A 16 and Group B 17 respectively, among which: the directional radar belonging to Group A 16 The central reflection direction L1 of the reflector 14 is away from one side of the reference plane, and the central reflection direction L1 of the directional radar reflectors 14 belonging to Group B 17 is away from the other side of the reference plane. Such a design can keep the central reflection direction L1 of at least one set of directional radar reflectors 14 facing the air regardless of which side of the lifebuoy is facing downwards, so that the radar waves emitted from the air can be detected. reflection.

In order to make the distribution of the directional radar reflectors 14 of Group A 16 and Group B 17 more reasonable, as shown in FIG. The reflection directions L1 are all perpendicular to the reference plane. Several directional radar reflectors 14 themselves are arranged in such a way that the directional radar reflectors 14 of group A 16 and the directional radar reflectors 14 of group B 17 are alternately distributed, and the directional radar reflectors 14 of group A 16 and group B are alternately distributed. The directional radar reflectors 14 of the group 17 are designed to be distributed alternately, so that the weight of each part of the lifebuoy is more uniform.

In order to make the distribution of the omnidirectional radar transmitters more reasonable, as shown in FIG. 2 , each omnidirectional radar reflector 15 is provided with a central axis L2 , and the central axis L2 refers to the metal ring of the omnidirectional radar reflector 15 The central axis of the reflector 13 in the shape of L2 is parallel to the reference plane, the central axis L2 of the omnidirectional radar reflector 15 of group C 18 is coplanar with the reference plane, and the central axis L2 of the omnidirectional radar reflector 15 of group D 19 is the same as the reference plane. The reference plane is vertical; the arrangement of the omnidirectional radar reflectors 15 is such that the directional radar reflectors 14 of the C group 18 and the directional radar reflectors 14 of the D group 19 are distributed alternately.

In order to make the structure of the lifebuoy more reasonable, as shown in FIG. 1 and FIG. 2 , each radar reflector is arranged in the lifebuoy body 11 and integrally formed with the lifebuoy body 11 . The lifebuoy body 11 is also a foamed part. During production, the radar reflector is first embedded in a recess in a mold used to make the foamed lifebuoy body 11. The mold is closed and the foam material is injected on the radar reflector. Then carry out the first foaming. After the first foaming is completed, the radar reflector is fixed on the foamed half-side lifebuoy body, and then the half-side lifebuoy body is turned over and put into another In the mold for making the lifebuoy body 11 , with the side with the radar reflector facing upwards, close the mold and inject foaming material on the top of the radar reflector, and then perform the second foaming. After the second foaming is completed, the production of the entire lifebuoy body 11 is completed, and the radar transmitter and the lifebuoy body 11 are integrally formed.

Example 2

The difference between this embodiment and Embodiment 1 is: as shown in FIG. 3 , the diameter of the Lunberg lens 22 of each radar reflector 21 is larger than the cross-sectional diameter of the lifebuoy body, so that these radar reflectors 21 divide the lifebuoy body into two parts. A number of floating sections 23 are formed between them. In the production process of this embodiment, the radar reflectors 21 are integrally connected together when foaming to form the lifebuoy body, so that a recess is formed between the two adjacent radar reflectors 21. During use The underarm position of the person falling into the water can be clamped with a recess, which makes the lifebuoy more convenient to use.

Example 3

The difference between this embodiment and Embodiment 1 is that the reflection direction of the partial directional radar reflector and the reflection direction of the partial omnidirectional radar reflector are different. Specifically, as shown in Figures 4 and 5, there are two directional radar reflectors in Group A 31, which are the first radar reflector 311 and the second radar reflector 312 respectively; the directional radar reflectors in Group B 32 also have 2, they are the third radar reflector 321 and the fourth radar reflector 322 respectively; the first radar reflector 311, the second radar reflector 312, the third radar reflector 321 and the fourth radar reflector 322 surround the lifebuoy body The centers of 33 are arranged in sequence, wherein: the center reflection direction L1 of the first radar reflector 311 and the center reflection direction L1 of the third radar reflector 321 are both perpendicular to the reference plane; the center reflection direction L1 of the second radar reflector 312 An included angle α is formed with the reference plane, and the included angle α is between 10° and 80°; the center reflection direction L1 of the fourth radar reflector 322 forms an included angle β with the reference plane, and the included angle β is between 10° and 80°. . Each omnidirectional radar reflector is provided with a central axis L3; the number of the omnidirectional radar reflectors is 4, which are the fifth radar reflector 34, the sixth radar reflector 35, and the seventh radar reflector respectively 36 and the eighth radar reflector 37, the fifth radar reflector 34, the sixth radar reflector 35, the seventh radar reflector 36 and the eighth radar reflector 37 are sequentially arranged around the center of the lifebuoy body 33, wherein: the fifth The central axis L3 of the radar reflector 34 is perpendicular to the reference plane, and the central axis L3 of the sixth radar reflector 35 forms an included angle γ with the reference plane, and the included angle γ is between 10° and 80°. The seventh radar reflector The central axis L3 of the reflector 36 is arranged parallel to the reference plane, and the central axis L3 of the eighth radar reflector 37 forms an included angle θ with the reference plane, and the included angle θ ranges from 10° to 80°. In order to better reflect the radar wave of the lifebuoy, the included angle α, included angle β, included angle γ and included angle θ are all 45°.

Claims

A lifebuoy, including a lifebuoy body, is characterized in that: a number of radar reflectors are arranged in the lifebuoy body, the plurality of radar reflectors are distributed in a circular array with the center of the lifebuoy body as the center, and each radar reflector includes a Longbo A lens and a reflector, the Luneburg lens is made of a foamed medium material, a reflector is formed on the reflector, and the reflector of the reflector of each radar reflector is attached to the surface of the Lumberg lens.
A lifebuoy according to claim 1, characterized in that: among the plurality of radar reflectors: a part of the radar reflectors are directional radar reflectors, and the other part of the radar reflectors are omnidirectional radar reflectors; The directional radar reflector and the directional radar reflector are distributed alternately.
A lifebuoy according to claim 2, characterized in that: the reflecting surface of the reflector of the directional radar reflector is a concave surface of a hemispherical structure; the reflector of the omnidirectional radar reflector is sheet-shaped Metal ring, the reflector of the omnidirectional radar reflector is wound around its Lumberg lens, and the inner surface of the reflector of the omnidirectional radar reflector is a reflective surface.
A lifebuoy according to claim 3, characterized in that: each directional radar reflector is provided with a central reflection direction L1; the spherical center of the Lunberg lens of each radar reflector is coplanar with the center of the lifebuoy body. The face is called the reference plane; several directional radar reflectors are divided into two groups, which are Group A and Group B, among which: the central reflection direction L1 of the directional radar reflectors belonging to Group A is away from the reference plane side, belonging to The central reflection direction L1 of the directional radar reflectors of group B is away from the other side of the reference plane.
A lifebuoy according to claim 4, characterized in that the center reflection directions L1 of the directional radar reflectors of group A and the directional radar reflectors of group B are both perpendicular to the reference plane.
A lifebuoy according to claim 4, characterized in that: there are two directional radar reflectors in group A, which are the first radar reflector and the second radar reflector respectively; the directional radar reflectors in group B There are also two, they are the third radar reflector and the fourth radar reflector respectively; the first radar reflector, the second radar reflector, the third radar reflector and the fourth radar reflector are arranged in turn around the center of the lifebuoy body , wherein: the central reflection direction L1 of the first radar reflector and the central reflection direction L1 of the third radar reflector are both perpendicular to the reference plane; the central reflection direction L1 of the second radar reflector and the reference plane form an included angle α, The included angle α ranges from 10° to 80°; the center reflection direction L1 of the fourth radar reflector forms an included angle β with the reference plane, and the included angle β ranges from 10° to 80°.
A lifebuoy according to claim 4, 5 or 6, characterized in that: each omnidirectional radar reflector is provided with a central axis L2; the plurality of omnidirectional radar reflectors are divided into two groups, which are group C respectively and Group D, wherein: the central axis L2 of the omnidirectional radar reflector belonging to Group C is parallel to the reference plane, and the central axis L2 of the omnidirectional radar reflector belonging to Group D is perpendicular to the reference plane.
A lifebuoy according to claim 4, 5 or 6, characterized in that: each omnidirectional radar reflector is provided with a central axis L3; the number of the omnidirectional radar reflectors is 4, and they are respectively The fifth radar reflector, the sixth radar reflector, the seventh radar reflector and the eighth radar reflector, the fifth radar reflector, the sixth radar reflector, the seventh radar reflector and the eighth radar reflector surround the lifebuoy body The centers of the radar reflectors are arranged in sequence, wherein: the central axis L3 of the fifth radar reflector is perpendicular to the reference plane, and the central axis L3 of the sixth radar reflector forms an included angle γ with the reference plane, and the included angle γ is within 10° ~80°, the central axis L3 of the seventh radar reflector is arranged parallel to the reference plane, and the central axis L3 of the eighth radar reflector forms an included angle θ with the reference plane, and the included angle θ is between 10° and 80°.
A lifebuoy according to claim 1, 2 or 3, wherein each radar reflector is arranged in the lifebuoy body and integrally formed with the lifebuoy body.
A lifebuoy according to claim 1, 2 or 3, characterized in that: the diameter of the Lunberg lens of each radar reflector is larger than the cross-sectional diameter of the lifebuoy body, so that these radar reflectors divide the lifebuoy body into several parts. floating segment.