WO2017185586A1

WO2017185586A1 - Positioning device

Info

Publication number: WO2017185586A1
Application number: PCT/CN2016/098841
Authority: WO
Inventors: 王锐; 赵阳; 钱学雷
Original assignee: 王锐; 赵阳; 钱学雷
Priority date: 2016-04-28
Filing date: 2016-09-13
Publication date: 2017-11-02
Also published as: CN206020650U

Abstract

A positioning device (1), consisting of a positioning unit (11) or a plurality of connected positioning units (11), the positioning unit (11) being provided with one or more radio frequency identification electronic tags (12) therein, each radio frequency identification electronic tag (12) corresponding to three-dimensional space coordinates in a positioning space on a one to one basis. The positioning device achieves space positioning by means of the radio frequency identification electronic tag (12) provided in the positioning unit (11), and can be installed on a physical body that can fix the positioning unit (11) in an indoor or outdoor environment, according to practical application needs. The positioning device (1) is less affected by the environment, is easy and flexible to install and has high positioning precision and low cost.

Description

Positioning means

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201620384108.X filed on Apr. 28, 2016, the disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of spatial positioning technologies, and in particular, to a device having a positioning function.

Background technique

With the development of society, the advancement of network and communication technology, graphic image processing technology and computer technology, Virtual Reality, a computer simulation system that can create and experience virtual worlds, has become more and more popular and become human. A new way of communication. The most important feature of virtual reality is that it has good interactivity and immersion. The main technology of interaction and immersion relies on high-precision spatial positioning, so as to provide users with a better experience of seamless integration.

At present, the spatial positioning technology mainly includes: various positioning technologies based on GNSS (Global Navigation Satellite System), radio frequency positioning technology based on RSSI (received signal strength), radio frequency positioning technology based on RSSI, and CV positioning technology.

1. GNSS-based positioning technologies include GPS in the United States, GLONASS in Russia, GALILEO in the European Union, and Beidou in China. Due to the limited accuracy of GNSS itself, the delay is large, and later developed RTK, differential positioning and other technologies. These GNSS-based positioning technologies are widely used, but due to the poor penetration of satellite signals, they are almost zero. Therefore, in the densely populated areas, the positioning accuracy is greatly affected, and it is difficult to accurately locate indoors.

2. The representative technology in the RF-based positioning technology that is not based on RSSI is UWB positioning. UWB positioning is triangulation using TOA, TDOA, AOA, etc., which is basically understandable. In order to apply GNSS positioning technology to the interior, some known location points or fixed facilities are used as known location markers. The positioning accuracy of this kind of positioning technology is about 5CM in the ideal experimental environment. However, in practical application scenarios with complex environments, the accuracy is often much lower, because the complexity of the scene and the crowds will have a great impact on the signal, such as Multipath effect, which makes the positioning accuracy seriously reduced.

3. The RSSI-based radio frequency positioning technology currently includes WiFi positioning technology, Bluetooth positioning technology and Apple's iBeacon positioning technology. These techniques are based on the inverse of RSSI and distance, that is, the closer the base station (such as a WiFi access point), the higher the RSSI and the smaller the RSSI. However, there are countless factors that cause RSSI changes in practical application scenarios, including obstacle occlusion, polarization direction of wireless signals, antenna anisotropy, and so on. Through this kind of technology, we can only judge whether the target object is within the signal coverage, and can not accurately determine the specific location information of the target object.

4, CV positioning technology, although this type of technology has high precision, but the positioning cost is high, and if a plurality of target objects move or exist at the same time in a positioning area, the positioning accuracy will drop sharply, and has the disadvantage of weak ID, that is, There may be some phenomena in the target object that some or all of the target objects cannot recognize the positioning.

Summary of the invention

In order to solve the above problems in the prior art, the present disclosure proposes a device having a positioning function, which is composed of one positioning unit or a plurality of positioning unit connections, and one or more RFID tags are disposed in the positioning unit. The device can be installed on an entity that can fix the positioning unit in an indoor or outdoor environment according to the needs of the actual application. The positioning device is less affected by the environment, convenient and flexible to install, high in positioning accuracy, and low in cost.

The positioning device provided by the invention consists of a positioning unit or a plurality of positioning unit connections, wherein:

One or more radio frequency identification electronic tags are disposed in the positioning unit;

The radio frequency identification electronic tag has a one-to-one correspondence with the three-dimensional positioning coordinates in the positioning space.

Optionally, the positioning device is placed independently or on an attached object.

Optionally, when the positioning device is composed of a plurality of positioning unit connections, the positioning unit is provided with a connecting member.

Optionally, the positioning unit is made of a non-metallic material.

Optionally, the radio frequency identification electronic tag has unique identification information, and the identification information has a one-to-one correspondence with three-dimensional space coordinates.

Optionally, the radio frequency identification electronic tag is uniformly or non-uniformly disposed inside or on the surface of the positioning unit.

Optionally, when the radio frequency identification electronic tag is disposed on a surface of the positioning unit, an outer surface of the radio frequency identification electronic tag or a surface of the positioning unit on which the radio frequency identification electronic tag is disposed is provided with a protective layer.

Optionally, the radio frequency identification electronic tag is a medium high frequency/ultra high frequency radio frequency identification electronic tag.

Optionally, the radio frequency identification electronic tag is a 13.54 MHz high frequency passive RFID tag or a 866 MHz/902 MHz ultra high frequency passive RFID tag.

Optionally, the distance between two adjacent radio frequency identification electronic tags does not exceed 1 m. The positioning device proposed by the present disclosure realizes positioning by setting one or more RFID tags in the positioning unit and establishing unique identification information corresponding to the three-dimensional coordinates of the RFID tags, when the target object is formed in the positioning device or When moving in the covered space, the spatial position coordinate information of the target object can be determined according to the content of the RFID tag read by the reader. The above-mentioned device with positioning function proposed by the present disclosure can be conveniently installed in the space where the target object is located, and the overall input cost is low due to the use of the inexpensive RFID tag; in addition, the user can be based on the positioning accuracy and cost requirements. Flexible selection of the number and method of installation of RFID tags, such as dense installation or sparse installation, can meet the different needs of users, better solve the contradiction between positioning accuracy and positioning cost.

DRAWINGS

1 is a schematic structural view of a positioning device according to an embodiment of the present disclosure;

2 is a schematic structural diagram of a positioning unit according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a positioning unit connection according to an embodiment of the present disclosure.

detailed description

The present disclosure will be further described in detail below with reference to the specific embodiments thereof and the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

The present disclosure provides a positioning device consisting of a positioning unit or a plurality of positioning unit connections, wherein:

One or more radio frequency identification (RFID) tags are disposed in the positioning unit;

The radio frequency identification tag has a one-to-one correspondence with the three-dimensional space coordinates in the positioning space.

The positioning device can be placed independently or can be laid/arranged/fixed to the attached object. The specific installation method depends on the specific application needs, such as laying on the floor, fixing on the wall or ceiling, or Place it on a table, fix it on items such as goods, and so on. The positioning device can form a space or cover a space. When the target object, that is, the object to be positioned, moves in the space, the spatial position of the target object can be determined by reading the relevant RFID tag information by the reader, thereby Achieve precise positioning.

Wherein, the positioning unit is a solid unit having a certain length, width, thickness or other internal or surface where the RFID tag can be placed. The positioning unit may present a regular shape, such as a square, a rectangle or a circle, or may also have an irregular shape. In order to facilitate the laying of the positioning device in the positioning space and the rational and rational use of the material, the positioning unit can be flexibly selected. The shape of the unit. However, regardless of the shape of the positioning unit, when a plurality of positioning units are used to form the positioning device, the positioning unit needs to be provided with a connecting member, such as a card slot, a buckle, and a connecting buckle at the edge of the positioning unit or near the edge. The connector is connected to fix the relative position between the positioning units or the relative position between the positioning unit and the attached object. It should be noted that the shape of the above positioning unit is only an exemplary description, and is not intended to limit the disclosure. Any reasonable and manufacturable positioning unit shape falls within the protection scope of the present disclosure.

The positioning unit is made of a non-metallic material or mainly made of a non-metallic material such as polycarbonate, polyvinyl chloride or the like. Of course, the manufacturing material of the positioning unit can be selected according to the installation position of the positioning unit, for example, when the positioning unit is used as a floor, the anti-pressure non-selection can be selected. A metal material, when the positioning unit is used as a ceiling or mounted on a wall, a lightweight non-metallic material or the like can be selected.

Each of the RFID tags has a unique identification information, which can ensure that each RFID tag is unique in the space required for positioning, and there is a one-to-one correspondence between the identification information and the three-dimensional space coordinates. relationship. For example, the identification information may include one or more of EPC ID information of the RFID tag, a serial number of the positioning unit where the RFID tag is located, and a serial number of the RFID tag in the positioning unit. Of course, the identification information may also be other information as long as it can uniquely distinguish a plurality of RFID tags in the same positioning space. The identification information can be established by an editing tool, which can edit and set the positioning unit serial number of the RFID tag and the serial number of the RFID tag in the positioning unit.

The RFID tag can be installed on the inside or the surface of the positioning unit. In practical applications, the installation position of the RFID tag can be selected according to actual needs and the installation position of the positioning device, for example, if the positioning device is laid on the floor. In order to protect the RFID tag and extend its service life, the RFID tag may be installed inside the positioning unit; if the positioning device is installed on a wall or a ceiling, since the RFID tag does not need to bear weight, in order to increase the RFID The identification distance of the tag is increased, and the RFID tag is optionally mounted on the surface of the positioning unit. In this case, in order to protect the RFID tag, the RFID tag may also be The outer surface or the surface of the positioning unit on which the RFID tag is mounted is sheathed with a protective layer which can be made of a pressure-resistant material. It should be noted that the mounting position of the above RFID tag is merely an exemplary description, and is not intended to limit the disclosure, and any reasonable and manufacturable mounting position falls within the protection scope of the present disclosure.

The RFID tag may be any suitable size or size of RFID tag, and the identification range of one or more RFID tags of the positioning unit may completely cover or partially cover the positioning device. In an embodiment of the present disclosure, the RFID tag is a medium-high frequency/ultra-high frequency RFID tag or a medium-high frequency/ultra-high frequency passive RFID tag. It can be understood that the working frequency of the medium-high frequency RFID tag is 3 MHz. At 30MHz, UHF RFID tags operate at frequencies from 860MHz to 960MHz. In a preferred embodiment of the present invention, a 13.54 MHz high frequency passive RFID tag or a 866 MHz/902 MHz UHF passive RFID tag is used. RFID tags are less affected by environmental factors, have low cost, strong anti-interference and long service life. Of course, in practical applications, medium-high frequency or ultra-high frequency RFID tags of other working frequencies can be used according to actual needs. It should be noted that the dimensions and specifications of the above RFID tags are merely exemplary and are not intended to limit the disclosure. Any reasonable and achievable RFID tag size and specifications fall within the protection scope of the present disclosure.

The RFID tag may be uniformly distributed in the positioning unit, or may be non-uniformly distributed. It can be understood that the uniform distribution refers to the same distance between each RFID tag in the positioning unit, and the non-uniform distribution It means that the distance between each RFID tag in the positioning unit is not the same or not exactly the same. The selection of the RFID tag distribution mode is related to the positioning accuracy and the positioning cost requirement. In order to make the coverage of the RFID tag have no blind zone and achieve all-round seamless high-precision positioning, the uniform distribution mode is usually selected; but in practical applications, In some areas, the coverage of RFID tags may not be needed. In the case that the accuracy requirements can be met, in order to reduce the cost, a non-uniform distribution mode may be selected, and even a distribution mode may be customized according to the actual application requirements of the user. Of course, the arrangement distance between the RFID tags can also be determined according to the required positioning effect and accuracy. Generally, the distance between the RFID tags does not exceed 1 m, and preferably, the distance between the RFID tags is greater than Its size is 3 times. It should be noted that the distribution manner of the above RFID tag is merely an exemplary description, and is not intended to limit the disclosure. Any reasonable and achievable distribution manner of the RFID tag falls within the protection scope of the present disclosure.

In summary, the positioning device realizes positioning by installing one or more RFID tags in the positioning unit and establishing unique identification information corresponding to the three-dimensional coordinates of the RFID tags, and the target object is formed in the positioning device. When moving in the covered space, the spatial position coordinate information of the target object can be determined according to the content of the RFID tag read by the reader. The positioning device of the present disclosure is less affected by the environment, has high positioning accuracy, and is low in cost.

The present disclosure will be further described below by taking a positioning device composed of a plurality of positioning unit connections as an example.

1 is a schematic structural view of a positioning device according to an embodiment of the present disclosure. As shown in FIG. 1 , the positioning device 1 is composed of a plurality of positioning units 11 . In this embodiment, the positioning unit 11 adopts a rectangular shape. A regular shape.

2 is a schematic structural diagram of the positioning unit 11 in the embodiment. As shown in FIG. 2, in the interior of the positioning unit 11, the RFID tags 12 are arranged in a non-uniform distribution manner. In this embodiment, between each RFID tag 12 The distance is greater than 1.5 times the size of the RFID tag.

The RFID tag 12 in the positioning unit 11 is edited by the editing tool with unique editing information, and the unique identification information and the spatial position information of the positioning unit 11 where the RFID tag 12 is located and the position of the RFID tag 12 in the positioning unit 11 The information is associated one by one so that the corresponding unique spatial position information of the RFID tag 12 in the positioning device 1 can be determined.

In this embodiment, the positioning unit 11 is made by heating and pressing a polyvinyl chloride material.

Referring to FIG. 3, in the embodiment, the positioning unit 11 is configured by a seamless splicing method, and in FIG. 3, a and b respectively represent two adjacent positioning units.

The specific embodiments of the present invention have been described in detail with reference to the specific embodiments of the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Claims

A positioning device, characterized in that the positioning device is composed of one positioning unit or is connected by a plurality of positioning units, wherein:

One or more radio frequency identification electronic tags are disposed in the positioning unit;

The radio frequency identification electronic tag has a one-to-one correspondence with the three-dimensional space coordinates in the positioning space.
The positioning device according to claim 1, wherein the positioning device is independently placed or arranged on an attached object.
The positioning device according to claim 1, wherein when the positioning device is composed of a plurality of positioning unit connections, the positioning unit is provided with a connecting member.
The positioning device according to claim 1, wherein the positioning unit is made of a non-metallic material.
The positioning device according to claim 1, wherein the radio frequency identification electronic tag has unique identification information, and the identification information has a one-to-one correspondence with three-dimensional space coordinates.
The positioning device according to claim 1, wherein the radio frequency identification electronic tag is uniformly or non-uniformly disposed inside or on a surface of the positioning unit.
The positioning device according to claim 6, wherein when the radio frequency identification electronic tag is disposed on a surface of the positioning unit, an outer surface of the radio frequency identification electronic tag or a positioning unit on which the radio frequency identification electronic tag is disposed A protective layer is added to the surface.
The positioning device according to claim 1, wherein the radio frequency identification electronic tag is a medium high frequency/ultra high frequency radio frequency identification electronic tag.
The positioning device according to claim 8, wherein the radio frequency identification electronic tag is a 13.54 MHz high frequency passive RFID tag or a 866 MHz/902 MHz ultra high frequency passive RFID tag.
The positioning device according to claim 1, wherein the distance between adjacent two radio frequency identification electronic tags does not exceed 1 m.