CN213838368U

CN213838368U - Multi-antenna safety door device and safety door detection system

Info

Publication number: CN213838368U
Application number: CN202020487276.8U
Authority: CN
Inventors: 邹瀛忠; 郑裕杰; 刘谭军
Original assignee: Guangzhou Andea Electronics Technology Co ltd
Current assignee: Guangzhou Andea Electronics Technology Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-07-30
Anticipated expiration: 2030-04-03

Abstract

The utility model provides a many antennas safety door device and emergency exit detecting system, include: the safety door comprises a safety door body and a plurality of groups of antennas arranged on the safety door body; each group of antennas consists of a plurality of wires; this technical scheme has certain restriction to electronic tags and emergency exit radio frequency antenna's space identification distance, and when increasing a plurality of antennas, the condition that can mutual interference between two antennas of coplanar, through adopting every emergency exit positive and negative all to design the structural style for many antennas, the antenna shape design is the coil mode, a plurality of antennas are arranged side by side, the antenna of emergency exit positive and negative has certain looks of intersecting simultaneously, thereby avoid two antennas to interfere mutually and make the great improvement of distance of its discernment simultaneously.

Description

Multi-antenna safety door device and safety door detection system

Technical Field

The utility model relates to an emergency exit detects technical field, especially relates to a multi-antenna safety door device and emergency exit detecting system.

Background

Currently, RFID security doors are often provided in places such as shopping malls, libraries, museums, etc. for monitoring and preventing theft of goods/books. When a person passes through the passage of the security gate, the security gate confirms whether the article can be taken out by sensing the RFID tag on the article. When passing personnel carry articles carried out illegally, the induction antenna on the RFID safety door can recognize and send out sound or light signals to give an alarm.

At present, in the design of a safety door, a single-group antenna design is usually adopted, the identification range is narrow, and the condition of reading omission is easy to occur. In order to overcome the design defect of a single group of antennas, a design scheme of a plurality of groups of antennas is provided in the prior art, and two or more groups of antennas are arranged on the safety door to improve the identification signal range of the safety door. However, in the design scheme of the multiple groups of antennas, each group of antennas only has one conducting wire as an antenna, so that the read-write capability of the antennas is not high, and the identification capability is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a many antennas safety door device and emergency exit detecting system to improve the reading and writing ability of antenna in the emergency exit, improve the practicality of emergency exit system.

In order to solve the technical problem, an embodiment of the utility model provides a multi-antenna safety door device, include: the safety door comprises a safety door body and a plurality of groups of antennas arranged on the safety door body; each group of antennas consists of a plurality of wires.

As preferred scheme, be provided with two sets of antennas on the emergency exit body, include: a first set of antennas and a second set of antennas.

Preferably, the first group of antennas and the second group of antennas intersect and partially overlap.

Preferably, a first high-frequency switch is arranged on the first group of antennas; and a second high-frequency switch is arranged on the second group of antennas.

Preferably, the first group of antennas and the second group of antennas are symmetrically arranged.

Preferably, the plurality of wires are arranged in parallel and around to form each group of antennas.

Preferably, each wire of each group of antennas is a rectangular wire frame.

Preferably, the number of the wires in each group of antennas is three.

The embodiment of the utility model provides an emergency exit detecting system is still provided, include: a plurality of multi-antenna security door apparatus as described in any one of the above embodiments.

Preferably, a safety channel is formed between any two adjacent multi-antenna safety door devices.

Compared with the prior art, the embodiment of the utility model provides a have following beneficial effect:

1. the utility model discloses a set up many wires and constitute every group antenna on the emergency exit body, make the inductance value of every group antenna reduce to the read-write performance of antenna can improve on the messenger emergency exit.

2. The design of the antenna adopts a design mode of intersecting two antennas, so that the two antennas are partially overlapped, and the technical problem that a plurality of groups of antennas in the same plane interfere with each other when in work is solved.

3. By arranging the high-frequency switch, the flow direction of the antenna current can be controlled by utilizing a switching control technology, so that the antenna current can perform round-robin work in sequence, and the in-phase and out-phase work of the antenna can be realized.

4. The plurality of wires on each group of antennas are arranged in parallel in a surrounding mode, so that the inductance of the antennas can be optimized, and the reading and writing capability of the antennas on the safety door can be optimized.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

FIG. 1: is a schematic structural diagram of a multi-antenna safety door device in the embodiment of the utility model;

FIG. 2: do the embodiment of the utility model provides an emergency exit detecting system's schematic structure diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, a preferred embodiment of the present invention provides a multi-antenna security door device, wherein fig. 1 respectively shows from left to right: the safety door comprises a schematic structural diagram of a front antenna of the safety door, a schematic structural diagram of a back antenna of the safety door and a schematic structural diagram of an antenna after the safety door is combined. The multi-antenna safety door device includes: the safety door comprises a safety door body and a plurality of groups of antennas arranged on the safety door body; each group of antennas consists of a plurality of wires. The utility model discloses a set up many wires and constitute every group antenna on the emergency exit body, make the inductance value of every group antenna reduce to the read-write performance of antenna can improve on the messenger emergency exit.

In a preferred embodiment, two sets of antennas are arranged on the safety door body, including: a first set of antennas 101 and a second set of antennas 102. In this embodiment, the first group of antennas 101 and the second group of antennas 102 intersect and partially overlap. In this embodiment, the first group of antennas 101 and the second group of antennas 102 are symmetrically disposed. In this embodiment, the plurality of wires are arranged in parallel and surround to form each group of antennas. The design of the antenna adopts a design mode of intersecting two antennas, so that the two antennas are partially overlapped, and the technical problem that a plurality of groups of antennas in the same plane interfere with each other when in work is solved.

Specifically, in order to increase the detection area of the tag, two groups of antennas are arranged on each safety door, and each group of antennas is formed by surrounding a plurality of wires in parallel, so that the inductance of the antennas is reduced, and the read-write performance of the antennas is improved. In addition, because multiple groups of antennas on the same plane interfere with each other when working, a design mode of intersecting two antennas is used on the design of the antennas, so that the two antennas are partially overlapped to form an antenna array of an intersecting rectangular wire frame.

It should be noted that, in the present embodiment, each conducting wire in each group of antennas is provided by a rectangular wire frame. In this embodiment, the number of the wires in each group of antennas is three. The rectangular wire frame is set to be more attractive for the safety door, but can be changed according to actual requirements, for example, an arc-shaped wire frame, a circular wire frame and the like. In the present invention, the specific shape of the wire frame does not limit the protection scope of the present case. The number of the conducting wires can also be changed according to actual requirements, for example, four, five or the like, and the specific number of the conducting wires does not limit the protection scope of the present application.

In another embodiment, a first high frequency switch 11 is disposed on the first group of antennas 101; a second high frequency switch 12 is arranged on the second group of antennas 102. By arranging the high-frequency switch, the flow direction of the antenna current can be controlled by utilizing a switching control technology, so that the antenna current can perform round-robin work in sequence, and the in-phase and out-phase work of the antenna can be realized. Specifically, because the induction range of each antenna is limited, a certain blind area is generated, and therefore, the flow direction of the antenna current is controlled through a high-frequency switch and a switching control technology, and the antenna current is enabled to perform round-robin operation in sequence, so that the in-phase and out-of-phase operation of the antenna is realized.

Referring to fig. 2, an embodiment of the present invention further provides a safety door detection system, including: a plurality of multi-antenna security door apparatus as described in any one of the above embodiments. In this embodiment, a safety channel is formed between any two adjacent multi-antenna safety door devices. In order to solve the problem of the blind area inside the three-dimensional space, a mode that two safety doors are simultaneously placed in the same area to form a safety channel is adopted, each safety channel is guaranteed to be provided with four groups of antennas, namely an antenna 3, an antenna 4, an antenna 5 and an antenna 6, each group of antennas corresponds to a high-frequency switch, namely a high-frequency switch 31, a high-frequency switch 41, a high-frequency switch 51 and a high-frequency switch 61.

When the emergency exit constitutes working channel, the mode of operation of antenna mainly divide into 3:

(1) the single antenna works: the antenna 3 → the antenna 4 → the antenna 5 → the antenna 6 work in turn, so that the identification problem of the tags in the direction parallel to the safety door and perpendicular to the ground is solved, and the identification problem of the tags in the upper area and the lower area of the safety door in the direction perpendicular to the safety door and parallel to the ground is also solved;

(2) two antennas of the same gate are combined to work: the antenna 3+4 → the antenna 5+6 work in a round-robin manner, so that the identification problem of the tag in the middle area of the safety door in the direction perpendicular to the safety door and parallel to the ground is solved;

(3) two doors work in a combined mode through one antenna: antenna 3+6 → antenna 4+6 work in turn, solve the identification problem when the label is perpendicular to the emergency exit and the direction of perpendicular to ground, also can solve the identification problem when the upper and lower two regional labels of emergency exit are perpendicular to the emergency exit and the direction of parallel to ground simultaneously.

And three kinds of working methods are switched and circulated without stop, so that the induction blind areas of all the antennas are complemented, the electronic tag is read in all directions, the problem of the internal blind areas of the three-dimensional space is solved, and no blind area exists in the induction range.

In fig. 2:

symbol 1 represents the direction of the tag parallel to the security gate and perpendicular to the ground;

symbol 2 represents the direction of the tag perpendicular to the exit door and parallel to the ground;

symbol 3 represents the direction of the tag perpendicular to the security gate and perpendicular to the ground;

in addition, because the antenna of each safety door performs switching round-robin work according to the mode, a plurality of safety doors can be cascaded to form a multi-channel safety door system, and the whole safety door system can realize three-dimensional omnidirectional induction.

This technical scheme has certain restriction to electronic tags and emergency exit radio frequency antenna's space identification distance, and when increasing a plurality of antennas, the condition that can mutual interference between two antennas of coplanar, through adopting every emergency exit positive and negative all to design the structural style for many antennas, the antenna shape design is the coil mode, a plurality of antennas are arranged side by side, the antenna of emergency exit positive and negative has certain looks of intersecting simultaneously, thereby avoid two antennas to interfere mutually and make the great improvement of distance of its discernment simultaneously.

The utility model has the advantages that: each emergency exit adopts the criss-cross structural design mode of a plurality of antennas, can be provided with a plurality of antennas on each emergency exit, and every antenna is surrounded by many wires that parallel and forms, and along with the increase of wire, the inductance value of antenna is less and less, and read-write performance is also stronger and stronger. And two antennas on the same safety door adopt a partially crossed mode, so that the antennas can achieve the effect of mutual noninterference when working on the same plane, and meanwhile, in a specific range, because the diffusion of the magnetic field of the antennas is less, the identification distance of the antennas is improved, and the serial reading range is reduced. The antennas work in a round-robin mode through three different working modes, the effect that the blind areas of all the antennas are complementary is achieved, and the electronic tag is read in all directions. In addition, the working mode can be adopted no matter how many safety doors are cascaded, so that no identification blind area exists when every two safety doors work, and the three-dimensional reading of the label is realized. Therefore, the reliability of the whole safety door system is greatly improved.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention. It should be understood that any modification, equivalent replacement, or improvement made by those skilled in the art without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-antenna security door apparatus, comprising: the safety door comprises a safety door body and an antenna arranged on the safety door body; each group of antennas consists of a plurality of wires;

be provided with two sets of antennas on the emergency exit body, include: a first set of antennas and a second set of antennas;

the plurality of wires are arranged in parallel and around to form each group of antennas.

2. The multi-antenna security door arrangement of claim 1 wherein the first set of antennas intersects and partially overlaps the second set of antennas.

3. The multi-antenna security door apparatus of claim 2 wherein a first high frequency switch is disposed on the first set of antennas; and a second high-frequency switch is arranged on the second group of antennas.

4. The multi-antenna security door apparatus of claim 2 wherein the first set of antennas is symmetrically disposed with respect to the second set of antennas.

5. The multiple antenna security door arrangement of claim 1 wherein each wire in each set of antennas is a rectangular wire frame arrangement.

6. The multiple antenna security door assembly of claim 1 wherein the number of wires in each antenna set is three wires.

7. A security gate detection system, comprising: a plurality of multi-antenna security gate apparatuses as claimed in any one of claims 1 to 6.

8. The security gate detection system of claim 7, wherein a security channel is formed between any two adjacent said multiple antenna security gate devices.