CN217739481U

CN217739481U - High-precision tag locator based on UWB

Info

Publication number: CN217739481U
Application number: CN202220732094.1U
Authority: CN
Inventors: 刘卓凡; 郑伟; 范海涛; 朱文燕
Original assignee: Huizhou Gaoshengda Technology Co Ltd
Current assignee: Huizhou Gaoshengda Technology Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-11-04
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a high accuracy label locator based on UWB, including main control unit, UWB ranging unit, LED indicating element, bee calling organ and power supply unit, the main control unit is connected with UWB ranging unit, LED indicating element, bee calling organ and power supply unit electricity respectively, power supply unit still supplies power for UWB ranging unit; the UWB ranging unit comprises a UWB ranging chip and a transceiving antenna, the transceiving antenna is electrically connected with the UWB ranging chip, and the UWB ranging unit is respectively electrically connected with the main control unit and the power supply unit. The utility model provides a high accuracy label locator based on UWB through setting up UWB distance measurement chip and receiving and dispatching antenna, can make this label locator have centimetre level high accuracy location, can cooperate the tracker to carry out range finding angle measurement function simultaneously, moreover through setting up bee calling organ and LED etc. for more easily being looked for.

Description

High-precision tag locator based on UWB

Technical Field

The utility model relates to a positioner field especially relates to a high accuracy label locator based on UWB.

Background

At present, which is increasingly popular in intellectualization, the accurate positioning function is an indispensable function of each intelligent product, and is especially important for the functions of article tracking, pet searching and the like, the precision of the current positioner is not high, and the function is single, only has the distance measuring function, and is not easy to search. In response to this phenomenon, those skilled in the art need to optimize the positioner for upgrade.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a high accuracy label locator based on UWB, through setting up UWB range finding chip and receiving and dispatching antenna, can make this label locator have centimetre level high accuracy location, can cooperate the tracker to carry out range finding angle measurement function simultaneously, moreover through setting up bee calling organ and LED etc. for it is seeked more easily.

The purpose of the utility model is realized through the following technical scheme:

a UWB-based high-precision tag locator, comprising: a main control unit, a UWB distance measuring unit, an LED indicating unit, a buzzer and a power supply unit,

the main control unit is respectively and electrically connected with the UWB ranging unit, the LED indicating unit, the buzzer and the power supply unit, and the power supply unit is also used for supplying power to the UWB ranging unit;

the UWB ranging unit comprises a UWB ranging chip and a transceiving antenna, the transceiving antenna is electrically connected with the UWB ranging chip, and the UWB ranging unit is respectively electrically connected with the main control unit and the power supply unit.

Preferably, the main control unit comprises an MCU (microprogrammed control unit) main control chip, a crystal oscillator X2 and a crystal oscillator X3, wherein the MCU main control chip is respectively electrically connected with the crystal oscillator X2 and the crystal oscillator X3, and the MCU main control chip is also respectively electrically connected with the UWB ranging chip, the LED indicating unit, the buzzer and the power supply unit.

Preferably, the main control unit further comprises a bluetooth antenna ANT2, and the bluetooth antenna ANT2 is electrically connected with the MCU main control chip.

Preferably, the UWB ranging unit further includes a crystal oscillator X1, and the crystal oscillator X1 is electrically connected to the UWB ranging chip.

Preferably, the high-precision label locator further comprises a communication terminal, and the communication terminal is electrically connected with the main control unit.

Preferably, the high-precision label locator further comprises a switch unit, an input end of the switch unit is electrically connected with the main control unit, and an output end of the switch unit is electrically connected with the LED indicating unit and the buzzer respectively.

Preferably, the switch unit includes a resistor R7 and a switch tube Q1, one end of the resistor R7 is electrically connected to the main control unit, the other end of the resistor R7 is electrically connected to the control end of the switch tube Q1, and the output end of the switch tube Q1 is electrically connected to the LED indication unit and the buzzer respectively.

Preferably, the switching tube Q1 is a triode.

The utility model discloses compare in prior art's advantage and beneficial effect as follows:

the utility model relates to a high accuracy label locator based on UWB is provided with bee calling organ and LED lamp, and MCU main control chip carries out preliminary online through the bluetooth, and the label locator then can cooperate the tracker to carry out range finding and angle measurement work after the online. Through setting up UWB ranging chip and receiving and dispatching antenna, UWB ranging chip carries out the range finding angle measurement through antenna send-receive signal and tracker to the range finding angle measurement information transmission master control chip QN9090, be less than certain master control chip then can control the buzzer start and the LED lamp is luminous when the tracker distance, let the label locator be found and seek by tracking equipment more easily, can press the reset key after seeking, can stop the work of buzzer and LED lamp.

Drawings

Fig. 1 is a functional block diagram of a UWB-based high-precision tag locator according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of the master control unit shown in FIG. 1;

FIG. 3 is a circuit diagram of the UWB ranging unit shown in FIG. 1;

fig. 4 is a circuit diagram of the communication terminal shown in fig. 1;

FIG. 5 is a circuit diagram of the switch unit, the LED indication unit and the buzzer shown in FIG. 1;

fig. 6 is a circuit diagram of the power supply unit shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In order to make people find out the wanted articles more easily, the UWB ranging chip can be used for centimeter-level high-precision positioning, and the UWB ranging chip has the functions of a buzzer, an LED and the like, so that the functions of article tracking, pet searching and the like are particularly important in small indoor positioning. In order to make people find out the wanted articles more easily; this product label locator possesses centimetre level high accuracy location, can cooperate the tracker to carry out range finding angle measurement function simultaneously, and possesses bee calling organ and LED etc. and realize the advantage that is seeked more easily.

Referring to fig. 1 to 2, a high-precision tag locator based on UWB includes: the system comprises a main control unit 100, a UWB ranging unit 200, an LED indicating unit 300, a buzzer 400, a power supply unit 500 and a switch unit 600, wherein a QN9090 chip is adopted as a main control chip in the MCU main control chip 100, the MCU main control chip has various interfaces, has a function of supporting Bluetooth transceiving, and has a Bluetooth 2.4G transceiving antenna interface; the UWB ranging unit 200 adopts a UWB module, supports an IEEE802.15.4z network protocol, simultaneously has a TDoA ranging function and an AoA angle measuring function, simultaneously supports power consumption, and has a UWB6-9G antenna and an SPI interface module; the power supply unit 500 adopts a 3.3V button battery for power supply, and has the advantages of small volume and the like; the switch unit is used for controlling the LED indicating unit 300 and the buzzer 400 to be switched on or off.

The main control unit is respectively connected with the UWB ranging unit, the LED indicating unit, the buzzer and the power supply unit, and the power supply unit is used for supplying power to the UWB ranging unit.

UWB ranging unit 200 includes UWB ranging chip 210 and receiving and dispatching antenna 220, receiving and dispatching antenna with UWB ranging chip electricity is connected, UWB ranging unit respectively with the main control unit with the power supply unit electricity is connected. The UWB ranging chip 210 is configured to implement a ranging function; the transceiving antenna 220 adopts a 6G to 9G antenna outside the UWB, and has better transceiving performance.

Referring to fig. 2, the main control unit includes an MCU main control chip, a crystal oscillator X2 and a crystal oscillator X3, the MCU main control chip is electrically connected to the crystal oscillator X2 and the crystal oscillator X3, and the MCU main control chip is further electrically connected to the UWB ranging chip, the LED indication unit, the buzzer and the power supply unit.

Referring to fig. 2, the main control unit further includes a bluetooth antenna ANT2, and the bluetooth antenna ANT2 is electrically connected to the MCU main control chip.

Specifically, U1 is a main control chip, which plays a role in central control and processes ranging information received by the UWB tag. The

pins

20 and 28 are power input pins, and power is supplied to the main control chip by inputting 3.3V; the

pins

1, 2, 33 and 34 are externally connected with crystal oscillator pins, and two external clock signals are provided for the main control chip U1 by connecting X2 and X3 crystal oscillators, wherein the capacitors NC7 and NC6 are crystal oscillator matching capacitors and are used for adjusting the frequency offset of the crystal oscillators; the

pins

3, 4, 5, 6, 8, 17, 18 and 19 are used for communicating with the UWB transceiver module;

pins

15, 16, and 27 are SWDIO burn-in pins of the main control IC for burning in operating firmware; the pins 11 and 12 are serial port pins and are connected with a serial port terminal;

pins

22, 23, 24, 25 communicate with display MAR 1; the pin 29 is an internal DCDC output pin of the chip, and 3.3V is converted into 1.2V through an internal DCDC circuit, so as to supply power to the pins 31, 32 and 35. The inductor L2 is matched with the output of the voltage reduction circuit, and the related capacitor plays a role in filtering and the like; the pin 37 is a 2.4G bluetooth transceiving antenna access pin, and in an antenna circuit, a resistor and a capacitor are used for matching a line to 50 omega impedance, so that the antenna has a better transceiving state. ANT2 is the bluetooth transceiver antenna of 2.4G, and bluetooth antenna is used for carrying out preliminary online handshake effect with the tracking equipment.

Referring to fig. 3, the UWB ranging unit further includes a crystal oscillator X1, and the crystal oscillator X1 is electrically connected to the UWB ranging chip. Wherein IC1 is UWB transceiver chip. The distance between the label and the tracker is measured through the cooperation of the following circuit and the tracker; the pin 26 is a chip power supply pin and is powered by an external 3.3V battery; pins 9 and 11 are chip internal power output pins, and convert 3.3V into VDD _ BUF and VDD _ GLOD global voltages through chip internal LDO, respectively supplying power to

voltage input pins

1, 3, 16, and 38. Wherein the related capacitance plays a role of filtering; the pin 5 is a 6G-9 GUWB receiving and transmitting antenna access pin, and in an antenna circuit, a resistor capacitor is used for matching a line to 50 omega impedance, so that the antenna has a better receiving and transmitting state. L1 is a filter for filtering signal interference except for 6G-9G. The ANT1 is a 6G-9 GUWB receiving and transmitting antenna, so that the distance measurement and angle measurement of the tag and the tracker are realized; the

pins

12, 20, 21, 22, 23, 29, 30 and 31 are communication pins for communicating with the main control chip; the pins 35 and 36 are external crystal oscillator pins and provide external clock signals for the UWB chip IC by connecting an X1 crystal oscillator, wherein the capacitors C2 and C3 are crystal oscillator matching capacitors for adjusting frequency offset of the crystal oscillator.

Referring to fig. 4, the high-precision tag locator further includes a communication terminal electrically connected to the main control unit. The external communication terminal circuit is shown in fig. 4-5, in which CON1 is a serial port terminal, and an external instruction can be sent to the main control chip through the serial port terminal, and meanwhile, the operation log of the main control chip can be checked through the serial port terminal; CON2 is the SWD terminal, is used for the outside to burn in the firmware and gets into the main control chip.

Referring to fig. 5 and 6, the output end of the switch unit is electrically connected to the LED indication unit and the buzzer, respectively. The switch unit comprises a resistor R7 and a switch tube Q1, one end of the resistor R7 is electrically connected with the main control unit, the other end of the resistor R7 is electrically connected with the control end of the switch tube Q1, and the output end of the switch tube Q1 is respectively electrically connected with the LED indicating unit and the buzzer. Specifically, the switching tube Q1 is a triode.

Specifically, the elements B1 and D1 are a buzzer and a light emitting diode respectively, wherein a resistor R7 and a triode Q1 form a switching circuit, which is controlled by a main control chip, so that when the distance from the tracker to the tag is very close, the main control chip triggers the tracker to enable the buzzer and the light emitting diode to work, and the buzzer and the light emitting diode can be found out better; s1 is a reset key which can start or stop the operation of a buzzer and a light-emitting diode; BAT1 is 3.3V button cell, supplies power for UWB chip and main control chip, and electric capacity C25, C26 are filter capacitance.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A UWB-based high-precision tag locator comprising: a main control unit, a UWB distance measuring unit, an LED indicating unit, a buzzer and a power supply unit,

2. The UWB-based high precision tag locator of claim 1, wherein the main control unit comprises an MCU main control chip, a crystal oscillator X2 and a crystal oscillator X3, the MCU main control chip is electrically connected with the crystal oscillator X2 and the crystal oscillator X3 respectively, and the MCU main control chip is further electrically connected with the UWB ranging chip, the LED indication unit, the buzzer and the power supply unit respectively.

3. The UWB-based high precision tag locator of claim 2, wherein the master control unit further comprises a Bluetooth antenna ANT2, the Bluetooth antenna ANT2 is electrically connected with the MCU master control chip.

4. The UWB-based high precision tag locator of claim 1, wherein the UWB ranging unit further comprises a crystal oscillator X1, wherein the crystal oscillator X1 is electrically connected with the UWB ranging chip.

5. The UWB-based high precision tag locator of claim 2, further comprising a communication terminal electrically connected with the main control unit.

6. The UWB-based high-precision tag locator of claim 1, further comprising a switch unit, wherein an input end of the switch unit is electrically connected with the main control unit, and an output end of the switch unit is electrically connected with the LED indication unit and the buzzer respectively.

7. The UWB-based high-precision tag locator of claim 6, wherein the switch unit comprises a resistor R7 and a switch tube Q1, one end of the resistor R7 is electrically connected with the main control unit, the other end of the resistor R7 is electrically connected with the control end of the switch tube Q1, and the output end of the switch tube Q1 is electrically connected with the LED indication unit and the buzzer respectively.

8. The UWB-based high precision tag locator of claim 7, wherein the switch tube Q1 is a triode.