Non-antenna blind area positioning device

Abstract

The utility model provides an antenna-free blind area positioning device. The antenna-free blind area positioning device comprises a first antenna (2) and a second antenna (3), the first antenna (2) and the second antenna (3) are directional antennas and are electrically connected to the UWB chip through the radio frequency switch (4); an MCU (6) is electrically connected with the radio frequency switch (4) and the UWB chip (5) respectively; the first antenna (2) and the second antenna (3) are adjacently arranged, and the directions of the two antennas respectively point to different directions. The UWB remote controller has the advantages that the UWB remote controller positioning without blind areas within the 180-degree range in front of a large screen can be realized by using one UWB chip, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] This application belongs to the technical field of device positioning, and particularly relates to a positioning device without antenna blind areas. Background Art

[0002] Currently, performing complex operations similar to those on a mobile phone using a large-sized screen has become increasingly popular among people due to the visual experience and convenience it brings to users. For the device implementing the above technology, it is common in the market to equip one device with a UWB remote control. For example, the Huawei Lingxi Pointing Remote Control can perform pointing selection on the screen content, avoiding complex operations such as button selection by users, and is faster and cooler. Its basic principle is to install a UWB positioning device on the large screen, and the antenna accurately locates the terminal remote control device. The position data is transmitted to the UWB positioning device in real time, and the confirmation result is transmitted to the large screen, and the large screen gives feedback on the corresponding operation, thus meeting the requirement of remote control by pointing.

[0003] The current positioning devices have the following defects:

[0004] As Figure 1 shown, the coverage angle of the antenna is 120°, the accurate range for the UWB remote control is limited, and it can only be operated at the front position of the large screen, with low recognition rate for side operations. Especially for the teaching scenario, in order to avoid blocking the content on the large screen, teachers generally perform pointing control and teaching from the side, and the existing technology cannot be directly applied to the teaching scenario. Utility Model Content

[0005] The purpose of this application is to overcome the defects.

[0006] To achieve the above purpose, this application proposes a positioning device without antenna blind areas, and the device includes a first antenna and a second antenna;

[0007] The first antenna and the second antenna are directional antennas, and both are electrically connected to a UWB chip through a radio frequency switch;

[0008] An MCU is electrically connected to the radio frequency switch and the UWB chip respectively;

[0009] The first antenna and the second antenna are deployed adjacent to each other, and the directions pointed by the two antennas are different.

[0010] As an improvement of the above device, the first antenna and the second antenna are fixed in the middle of the device to be located;

[0011] The directions pointed by the first antenna and the second antenna are symmetric about the normal line of the plane where the device to be located is located in the horizontal direction, and the included angle between the directions of the two antennas is 60° - 120°.

[0012] As an improvement of the above device, the device to receive positioning information is a large screen.

[0013] Compared with the prior art, the advantages of the present application are as follows:

[0014] 1. Using one UWB chip can achieve UWB remote control positioning without blind spots within a 180° range in front of the large screen, with a simple structure and low manufacturing cost.

[0015] 2. Since there is no antenna blind spot, the problem of being unable to find the UWB remote control can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows a schematic diagram of a prior art large screen UWB remote control positioning device;

[0017] Figure 2 The figure shows a structural diagram of a positioning device without antenna blind spots;

[0018] Figure 3 The figure shows a schematic diagram of antenna deployment of a positioning device without antenna blind spots.

[0019] REFERENCE SIGNS:

[0020] 1. Large screen 2. First antenna

[0021] 3. Second antenna 4. RF switch

[0022] 5. UWB chip 6. MCU DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings.

[0024] A positioning device without antenna blind spots provided by the present application realizes blind spot-free positioning of the UWB remote control within a 180° range in front of the large screen.

[0025] As Figure 2 shown, the positioning device without antenna blind spots includes a first antenna 2 and a second antenna 3, both of which are electrically connected to the UWB chip through an RF switch 4. An MCU (micro control unit) 6 is electrically connected to the RF switch 4, the UWB chip 5, and the large screen 1 respectively.

[0026] The first antenna 2 and the second antenna 3 are directional antennas, which are fixedly installed in the middle above or below the large screen 1. The directions of the two antennas are symmetric with respect to the normal line of the plane where the large screen 1 is located in the horizontal direction, and the included angle between the directions of the two antennas is 60° - 120°. As Figure 3 shown, it is a schematic diagram of the installation of the first antenna 2 and the second antenna 3 above the large screen 1.

[0027] In use, when the UWB remote control is within the coverage range of the first antenna 2, only the first antenna 2 can receive the signal of the UWB remote control; when the UWB remote control is within the coverage range of the second antenna 3, only the second antenna 3 can receive the signal of the UWB remote control; when the UWB remote control is within the overlapping part of the coverage areas of the first antenna 2 and the second antenna 3, both antennas can receive the signal of the UWB remote control. The signal is transmitted into the UWB chip 5 through the RF switch 4 to obtain the distances between the UWB remote control and the two antennas respectively. The MCU 6 compares the distances between the UWB remote control and the two antennas, controls the RF switch 4, and only receives the signal of the antenna closer to the UWB remote control. The MCU 6 switches and scans the RF switch 4, and dynamically adjusts the opening and closing of the RF switch 4 through the duty cycle to achieve timely monitoring of the signals of the two UWB remote controls. The model of the MCU 6 can be Furui Kun 3068e or other micro control units.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than to limit them. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present application does not depart from the spirit and scope of the technical solutions of the present application, and they should all be covered within the scope of the claims of the present application.

Claims

1. A positioning device without an antenna blind spot, characterized in that: The device comprises a first antenna (2) and a second antenna (3); The first antenna (2) and the second antenna (3) are directional antennas, and are both electrically connected to the UWB chip via a radio frequency switch (4); An MCU (6) is electrically connected to the radio frequency switch (4) and the UWB chip (5) respectively; The first antenna (2) and the second antenna (3) are deployed adjacent to each other, and the two antennas point in different directions respectively.

2. The antenna-free blind spot positioning device according to claim 1, characterized in that: The first antenna (2) and the second antenna (3) are fixed in the middle of the device to be received for positioning information; The directions of the first antenna (2) and the second antenna (3) are symmetrical in the horizontal direction based on the normal line of the plane where the device to receive the positioning information is located, and the pointing angle between the two antennas is 60°-120°.

3. The antenna-free blind spot positioning device according to claim 2, characterized in that: The device to receive positioning information is a large screen (1).

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