A frequency-adaptive BeiDou high-precision positioning terminal and method

Abstract

This invention discloses a frequency-adaptive BeiDou high-precision positioning terminal and method, comprising: acquiring the frequency of the signal received at the current location; calculating the pressure adjustment value of the spring antenna corresponding to the current frequency; moving the spring antenna according to the pressure adjustment value via a driving device; and stopping the driving device when the pressure of the spring antenna reaches the pressure adjustment value. In this invention, the length and pressure adjustment value of the spring antenna are calculated based on the difference between the frequency of the signal received at the current location and the fundamental frequency. The length of the spring antenna is adjusted and controlled using the pressure adjustment value, thereby achieving automatic length adjustment of the spring antenna, adaptively adapting to the frequency of the signal received at the current location, realizing resonant characteristics, and improving antenna radiation and transmit / receive conversion efficiency.

Description

Technical Field

[0001] This invention relates to the field of handheld positioning device technology, specifically to a BeiDou high-precision positioning terminal and method with adaptive frequency modulation broadcasting frequency. Background Technology

[0002] Handheld positioning devices are portable devices that determine a user's location by receiving satellite signals or other positioning technologies. Therefore, these devices require strong signal reception, and the antenna length is closely related to its operating frequency. Specifically, when the conductor length is an integer multiple of the wavelength, the conductor exhibits resonant characteristics at that wavelength's frequency, either in series or in parallel. In this resonant state, the antenna radiation is strong, and the transmission-reception conversion efficiency is high. Therefore, in practical applications, we typically calculate the corresponding wavelength based on the antenna's operating frequency, and then combine this with transmission line theory, installation space conditions, and transmission gain requirements to select a suitable antenna length. However, existing positioning terminals generally cannot adjust the antenna length or perform manual random adjustments, resulting in slow adjustment speeds and inability to achieve optimal performance. Summary of the Invention

[0003] The main objective of this invention is to provide a BeiDou high-precision positioning terminal and method with adaptive frequency modulation broadcasting frequency, aiming to solve the problems that existing positioning terminals generally cannot adjust the antenna length or can only be manually adjusted randomly, resulting in slow adjustment speed and failure to achieve optimal results.

[0004] To achieve the above objectives, the present invention proposes a handheld positioning terminal frequency adaptive method, comprising the following steps: Obtain the frequency of the signal received at the current location; Calculate the pressure adjustment value of the spring antenna corresponding to the current frequency: ; Where: c represents the speed of light. This represents the frequency of the signal received at the current location, where N is a constant. , The fundamental frequency is represented by K, the elastic coefficient by Z, and the compensation constant by Z. The spring antenna is moved by the drive device according to the pressure adjustment value; The drive device stops when the pressure of the spring antenna reaches the pressure adjustment value.

[0005] Preferably, after the step of obtaining the frequency of the signal received at the current location, the method includes: The driving time and direction are obtained using the frequency at the current location; ; Where c represents the speed of light. This represents the frequency of the signal received at the current location, where N is a constant. , The fundamental frequency is represented by , v represents the speed at which the driving device moves the spring antenna, and a negative T indicates that the driving direction is reversed. The driving device moves the spring antenna to a preset value according to the driving time and driving direction.

[0006] Preferably, after the step of stopping the driving device when the pressure of the spring antenna reaches the pressure adjustment value, the method includes: Has a power-off signal been received? If so, the driving device will move the spring antenna. The driving device will stop when the pressure of the spring antenna reaches the initial position, which is the position when the spring is not under force.

[0007] Preferably, the fundamental frequency is: ; Where c represents the speed of light, and N represents a constant. D represents the diameter of the spring antenna. The pitch between the spring antennas is represented by M, the number of turns of the spring antenna is represented by K, and the elastic coefficient is represented by K.

[0008] Preferably, the control component stores computer program instructions, which, when executed, implement the BeiDou high-precision positioning method with adaptive frequency modulation broadcasting frequency as described above.

[0009] Preferably, the device further includes a housing, an adaptive antenna, and an FM positioning component, a GPS positioning component, a TOF ranging component, and a control component disposed within the housing. The adaptive antenna includes a hollow rod, a spring antenna, a pressure sensor, and a driving device. The hollow rod is connected to the housing, the spring antenna is disposed within the hollow rod, and the spring antenna is connected to the FM positioning component. The driving device is used to drive the spring antenna to stretch or compress, and the pressure sensor is used to detect the tension of the spring antenna.

[0010] Preferably, the driving device includes a driving motor, a driving lead screw, and a driving slider. The driving motor drives the driving lead screw to move, and the driving slider is slidably disposed on the driving lead screw. The driving slider is connected to one end of the spring antenna.

[0011] Preferably, the drive motor is connected to the drive screw via a worm gear structure.

[0012] Preferably, the handheld handle is made of an unshielded material.

[0013] Preferably, the handheld rod includes a handheld section at one end away from the housing, a connecting plate is provided inside the handheld section, the connecting plate is connected to the spring antenna, and the driving device is located at one end of the handheld rod near the housing.

[0014] In the technical solution of this invention, the length of the spring antenna is calculated by the difference between the frequency of the signal received at the current location and the fundamental frequency. The length of the spring antenna is adjusted and controlled by the pressure adjustment value, thereby realizing automatic adjustment of the length of the spring antenna, adapting to the frequency of the signal received at the current location, realizing resonance characteristics, and improving the antenna radiation and transmission-reception conversion efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic flowchart of the frequency adaptive method for the handheld positioning terminal and method of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the Beidou high-precision positioning terminal with frequency modulation broadcasting frequency adaptive according to the present invention.

[0018] Explanation of icon numbers: 100. Housing; 110. Control assembly; 200. Adaptive antenna; 210. Hollow rod; 211. Handheld section; 212. Connecting plate; 220. Spring antenna; 230. Pressure sensor; 240. Drive unit.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0025] 100. Housing; 110. Control assembly; 200. Adaptive antenna; 210. Hollow rod; 211. Handheld section; 212. Connecting plate; 220. Spring antenna; 230. Pressure sensor; 240. Drive unit; 121541. zw.

[0026] Please refer to Figure 1 and Figure 2 This invention proposes a frequency-adaptive BeiDou high-precision positioning method, comprising the following steps: S100, Obtain the frequency of the signal received at the current location; S200, Calculate the pressure adjustment value of the spring antenna corresponding to the current frequency: ; Where: c represents the speed of light. This represents the frequency of the signal received at the current location, where N is a constant. , The fundamental frequency is represented by K, the elastic coefficient by Z, and the compensation constant by Z. S300, according to the pressure adjustment value, the spring antenna is moved by the drive device; S400, the drive device stops when the pressure of the spring antenna reaches the pressure adjustment value.

[0027] In the technical solution of this invention, the length of the spring antenna is calculated by the difference between the frequency of the signal received at the current location and the fundamental frequency. The length of the spring antenna is adjusted and controlled by the pressure adjustment value, thereby realizing automatic adjustment of the length of the spring antenna, adapting to the frequency of the signal received at the current location, realizing resonance characteristics, and improving the antenna radiation and transmission-reception conversion efficiency.

[0028] In another embodiment of the invention, after step S100, the following is included: S110, obtain the driving time through the frequency at the current position; ; Where c represents the speed of light. This represents the frequency of the signal received at the current location, where N is a constant. , The fundamental frequency is represented by , v represents the speed at which the driving device moves the spring antenna, and a negative T indicates that the driving direction is reversed. S120, the driving device drives the spring antenna to a preset value according to the driving time and driving direction.

[0029] Specifically, when the spring antenna is driven by the drive motor, the driving time and driving direction are quickly calculated by the driving motor driving the spring antenna to move at the speed, fundamental frequency and current frequency.

[0030] In another embodiment of the present invention, after step S400, the following is included: S410, has a power-off signal been received? If so, then step S420 is executed, in which the driving device drives the spring antenna to move. When the pressure of the spring antenna reaches the initial position, the driving device stops. The initial position is the position when the spring is not under force.

[0031] Specifically, it is restored upon receiving a power-off or reset signal, making it convenient for the next use.

[0032] In yet another embodiment of the invention, The fundamental frequency is ; Where c represents the speed of light, and N represents a constant. D represents the diameter of the spring antenna. The pitch between the spring antennas is represented by M, the number of turns of the spring antenna is represented by K, and the elastic coefficient is represented by K.

[0033] Specifically, the fundamental frequency is related to the characteristics of the spring antenna, which depends on the signal frequency received by the spring antenna, its diameter, pitch, number of turns, and elastic coefficient.

[0034] In another embodiment of the present invention, the fundamental frequency is ; Where O is the compensation number, which is related to the difference between the processing accuracy of the processing equipment and the calculated value, the processing error, and the diameter of the spring wire.

[0035] In another embodiment of the present invention, when N=4 and D is 13mm, With a diameter of 3.75mm and a rotation count of 2000, the fundamental frequency is 90MHz. In another embodiment of the invention, when N=4 and D is 15mm, When the diameter is 5mm and the number of turns is 15, the oscillation coefficient is 0.4 and the fundamental frequency is 90MHz.

[0036] In another embodiment of the invention, when N=4 and D is 15mm, When the diameter is 4.4mm, the number of turns is 17, the zero value is -0.5, and the fundamental frequency is 90MHz.

[0037] In another embodiment of the invention, when N=4 and D is 15mm, When the diameter is 4.4mm, the number of turns is 17, the zero value is -0.5, and the fundamental frequency is 90MHz.

[0038] In another embodiment of the invention, when N=4 and D is 15mm, When the diameter is 4.6mm and the number of turns is 163, the oscillation value is 0.05 and the fundamental frequency is 108MHz.

[0039] In another embodiment of the invention, when N=4 and D is 12mm, With a diameter of 3.7mm and a rotation count of 20, the oscillation value is 0.39, and the fundamental frequency is 108MHz.

[0040] Specifically, in the above six embodiments, the length values ​​need to be converted to meters.

[0041] A frequency-adaptive BeiDou high-precision positioning terminal includes a control component, which stores computer program instructions. When the computer program instructions are executed, the frequency-adaptive BeiDou high-precision positioning method described above is implemented.

[0042] In another embodiment of the present invention, the device further includes a housing, an adaptive antenna, and an FM positioning component, a GPS positioning component, a TOF ranging component, and a control component disposed within the housing. The adaptive antenna includes a hollow rod, a spring antenna, a pressure sensor, and a driving device. The hollow rod is connected to the housing, the spring antenna is disposed within the hollow rod, and the spring antenna is connected to the FM positioning component. The driving device is used to drive the spring antenna to stretch or compress, and the pressure sensor is used to detect the tension of the spring antenna.

[0043] Specifically, the FM positioning component, GPS positioning component, and TOF ranging component perform positioning and ranging to achieve positioning. The drive device drives the spring antenna to stretch or compress, changing the length of the spring antenna, thereby automatically adapting to signals of different frequencies.

[0044] In another embodiment of the present invention, the driving device includes a driving motor, a driving lead screw, and a driving slider. The driving motor drives the driving lead screw to move, and the driving slider is slidably disposed on the driving lead screw. The driving slider is connected to one end of the spring antenna.

[0045] Specifically, the drive motor drives the drive screw, the drive screw drives the drive slider to move, and the drive slider is connected to one end of the spring antenna to move.

[0046] In another embodiment of the present invention, the drive motor is connected to the drive screw via a worm gear structure.

[0047] Specifically, the worm gear structure is connected to the drive screw to achieve self-locking and prevent displacement.

[0048] In another embodiment of the present invention, the handheld rod is made of an unshielded material.

[0049] Specifically, unshielded materials include rubber insulators, plastic insulators, or ceramic insulators: unshielded materials are used to prevent signals from being blocked and to prevent signal strength from being affected.

[0050] In another embodiment of the present invention, the handheld rod includes a handheld section at one end away from the housing, a connecting plate is disposed inside the handheld section, the connecting plate is connected to the spring antenna, and the driving device is disposed at one end of the handheld rod near the housing.

[0051] Specifically, the drive device is located at one end of the handheld stick near the housing and is directly connected to the control components inside the housing. This prevents connecting wires from being placed around or in the middle of the spring antenna, which could affect the signal connection. At the same time, the handheld section is for hand use, preventing the hand from interfering with signal transmission.

[0052] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A BeiDou high-precision positioning method with adaptive frequency modulation broadcasting frequency, characterized in that, Includes the following steps: Obtain the frequency of the signal received at the current location; The driving time and direction are obtained using the frequency at the current location; ； Where c represents the speed of light. This represents the frequency of the signal received at the current location, where N is a constant. , The fundamental frequency is represented by V, which represents the speed at which the driving device moves the spring antenna. When T is negative, it indicates that the driving direction is reversed. The driving device moves the spring antenna to a preset value according to the driving time and driving direction. Calculate the pressure adjustment value of the spring antenna corresponding to the current frequency: ； Where: K represents the elastic coefficient, and Z represents the compensation constant; The fundamental frequency is ; Where D represents the diameter of the spring antenna. The pitch between the spring antennas is represented by M, where M represents the number of turns of the spring antenna. The drive device stops when the pressure of the spring antenna reaches the pressure adjustment value.

2. The BeiDou high-precision positioning method with frequency modulation broadcasting frequency adaptive as described in claim 1, characterized in that, After the step of stopping the drive device when the pressure of the spring antenna reaches the pressure adjustment value, the following steps are included: Has a power-off signal been received? If so, the driving device will move the spring antenna. The driving device will stop when the pressure of the spring antenna reaches the initial position, which is the position when the spring is not under force.

3. A BeiDou high-precision positioning terminal with adaptive frequency modulation broadcasting frequency, characterized in that, It includes a control component, which stores computer program instructions. When the computer program instructions are executed, they implement the BeiDou high-precision positioning method with adaptive frequency modulation broadcasting frequency as described in either claim 1 or 2.

4. The frequency-adaptive BeiDou high-precision positioning terminal as described in claim 3, characterized in that, It also includes a housing, an adaptive antenna, and an FM positioning component, a GPS positioning component, a TOF ranging component, and a control component disposed within the housing. The adaptive antenna includes a hollow rod, a spring antenna, a pressure sensor, and a driving device. The hollow rod is connected to the housing, the spring antenna is disposed within the hollow rod, and the spring antenna is connected to the FM positioning component. The driving device is used to drive the spring antenna to stretch or compress, and the pressure sensor is used to detect the tension of the spring antenna.

5. The frequency-adaptive BeiDou high-precision positioning terminal as described in claim 4, characterized in that, The driving device includes a drive motor, a drive screw, and a drive slider. The drive motor drives the drive screw to move, and the drive slider is slidably disposed on the drive screw. The drive slider is connected to one end of the spring antenna.

6. The frequency-adaptive BeiDou high-precision positioning terminal as described in claim 5, characterized in that, The drive motor is connected to the drive lead screw via a worm gear structure.

7. The frequency-adaptive BeiDou high-precision positioning terminal as described in claim 4, characterized in that, The hollow rod is made of non-shielded material.

8. The BeiDou high-precision positioning terminal with adaptive frequency modulation broadcasting frequency as described in any one of claims 4-7, characterized in that, The hollow rod includes a handheld section at one end away from the housing. A connecting plate is provided inside the handheld section, and the connecting plate is connected to the spring antenna. The driving device is located at one end of the handheld section near the housing.

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