An adaptive beam scanning antenna system based on differential ranging algorithm

Abstract

The invention discloses an adaptive beam scanning antenna system based on a differential ranging algorithm, comprising a first bandwidth dual-polarized antenna, a second bandwidth dual-polarized antenna and a third bandwidth dual-polarized antenna, a steering gear for controlling the swing of the first bandwidth dual-polarized antenna, a first wireless module and a second wireless module, and a controller for respectively receiving a first level signal and a second level signal transmitted by the first wireless module and the second wireless module. The controller identifies a bandwidth dual-polarized antenna far away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on a point-to-point adaptive differential ranging algorithm, calculates an angle that the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal. The steering gear controls the control signal transmitted by the receiving controller, controls the first bandwidth dual-polarized antenna to rotate according to the angle, and then corresponds to the bandwidth dual-polarized antenna far away, thereby improving the validity and reliability of the wireless receiving signal.

Description

Technical Field

[0001] The invention belongs to the field of wireless communications and relates to an adaptive beam scanning antenna system based on a differential ranging algorithm. Background Art

[0002] With the rapid development of various economies in my country, the demand for energy is increasing day by day. Coal has always been the main energy consumption in my country's economic development. The mining of a large amount of coal resources is accompanied by various high-risk coal mine safety accidents. At present, my country's underground communication system is still relatively backward. Most mines are still dominated by wired communications. The cables are complicated and heavy, and are spread throughout the entire mine system. Especially the vertical shaft channel, the length from top to bottom generally ranges from 400m to 1600m. Every day, the cage keeps moving up and down, and the cables are seriously worn up and down with the cage, which poses serious safety problems and communication quality problems. Wired communication can no longer meet the needs of vertical shaft channel system communication. Therefore, in recent years, the development of wireless communication in vertical shaft channels has gradually become the development trend of future vertical shaft communication.

[0003] The wireless communication conditions in the shaft channel are poor. The electromagnetic wave transmission in the channel is affected by the shaft channel structure, cage system interference, environmental humidity, temperature, dust, electric sparks, and gas concentration, and the loss is large and uneven. Especially at the edge of the channel, the uneven side walls cause great loss to the transmission of electromagnetic waves. Some mines try to install WIFI wireless systems on the cages to achieve video surveillance, but the conventional antenna radiation beam used by the WIFI wireless system is large, the radiation distance is limited, and it cannot be flexibly covered according to the shape and length of the channel. Referring to the development of ground wireless communication, narrow beam and high-gain base station antennas are gradually being put into use for wireless coverage of shaft channels.

[0004] The use of base station antennas has basically achieved full coverage of wireless communication in vertical shaft channels in many small mines, and the dual-polarization characteristics adopted by most base station antennas have met the bandwidth requirements for the increase in the number of communication functions to a certain extent. However, due to the influence of the installation environment, the size of the installed antenna is limited. Due to the deepening of channels and the increase in the functions of wireless communication systems in many medium-sized and large mines, ordinary base station antennas have narrow bandwidths and cannot achieve full coverage of the structure and functions of the wireless system of the vertical shaft channels.

[0005] The current beam scanning antenna mainly changes the weight or phase of a single array element and the distance between array elements. Most beam scanning antennas are large in size and have more array elements. The more conventional beam scanning antenna arrays there are, the smaller the gain and beam width changes with the angle of the beam scanning. However, due to the limitations of actual scenarios, the antenna size should not be too large, resulting in large changes in the gain lobe width of conventional beam scanning antennas during beam scanning. In fact, in the vertical shaft channel, the unevenness of a slight change in antenna gain will cause severe multipath interference to the signal in the channel, resulting in a decrease in the reliability of signal transmission. Therefore, the challenges of simultaneously achieving broadband dual polarization, high isolation, small size, and low changes in beam scanning gain and lobe width for beam scanning antennas are still huge.

[0006] With the continuous development of adaptive beam scanning antenna theory and array signal processing technology, the research and application of antenna-based adaptive positioning technology has become more and more extensive. It is of great significance in the fields of radar direction finding, navigation guidance and mobile communications, and has attracted widespread attention from scholars at home and abroad. The determination of spatial position is of great significance in daily life and economic activities. For example, the monitoring of vehicle positions in cities, the measurement of vehicle speed on roads, the query of target personnel positions, the anti-theft of public property or valuables, etc. are all closely related to spatial position. Therefore, the accurate positioning of the object position has practical social and economic significance. This application proposes a differential ranging algorithm for the special background of the vertical shaft cage system. In summary, for the wireless coverage of the vertical shaft channel, it is very necessary to study an adaptive beam scanning antenna system based on a differential ranging algorithm. The array antenna is one of the most critical parts. The system requires a dual-polarized antenna with a wide bandwidth, high isolation and small size to form an antenna array. In order to realize point-to-point wireless communication between the antenna and the cage, a differential ranging algorithm is designed based on the designed antenna array. Summary of the invention

[0007] In order to solve the problem that in the vertical shaft wireless communication system, the video and voice signals on the cage are unstable due to the up and down movement of the cage due to the long vertical shaft passage, the present invention provides the technical solution adopted by the present invention:

[0008] A first bandwidth dual-polarized antenna disposed at the top of the shaft;

[0009] A second bandwidth dual-polarized antenna and a third bandwidth dual-polarized antenna respectively arranged on the first tank cage and the second tank cage;

[0010] a steering gear for controlling the swing of the first bandwidth dual-polarized antenna;

[0011] A second wireless module for measuring the distance between the first bandwidth dual-polarized antenna and the second bandwidth dual-polarized antenna and converting the distance into a first level signal;

[0012] a third wireless module configured to measure the distance between the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna and convert the distance into a second level signal;

[0013] A first wireless module for receiving the first level signal sent by the second wireless module and the second level signal transmitted by the third wireless module respectively;

[0014] A controller receiving the first level signal and the second level signal sent by the third wireless module, wherein the controller identifies the bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on a point-to-point adaptive differential ranging algorithm, calculates the angle at which the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal;

[0015] The steering gear controls and receives the control signal transmitted by the controller, and controls the first broadband dual-polarized antenna to rotate according to an angle, thereby corresponding to the broadband dual-polarized antenna that is farther away.

[0016] Further: the first bandwidth dual-polarized antenna, the second bandwidth dual-polarized antenna, and the third bandwidth dual-polarized antenna have the same structure;

[0017] The first bandwidth dual-polarized antenna includes two dipoles;

[0018] The dipole is in the shape of a bow tie;

[0019] The two dipoles are arranged vertically and crossed.

[0020] Furthermore: the dipole is excited by a microstrip stub, and the microstrip stub is directly fed by a coaxial line, so that the dual-polarized antenna is completely planar.

[0021] Furthermore: the bow-tie shape is formed by an exponential function.

[0022] Further: the controller identifies the bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on the point-to-point adaptive differential ranging algorithm, calculates the angle at which the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal as follows:

[0023] The RSSI value of the first cage sent by the first wireless module received by the controller is rec_1, and the RSSI value of the second cage sent by the second wireless module received by the controller is rec_2;

[0024] The distance between the first cage and the ground is h1, the distance between the second cage and the ground is h2, and the overall height of the well channel is H; h1+h2=H;

[0025] The receiving levels of the first cage and the second cage are taken at intervals of 1 second, and rec_1 and rec_2 are converted into h1 and h2 respectively;

[0026] When rec_1-rec_2>0;

[0027] According to H-h1=h2, the value of rec_2 is calculated through rec_1, the value interval of rec_2 is determined, and the angle value θ1 of the first bandwidth dual-polarized antenna rotating to the right is calculated according to the corresponding PMW value;

[0028]

[0029] When rec_1-rec_2<0;

[0030] According to H-h1=h2, the value of rec_1 is calculated through rec_2, the value interval of rec_1 is determined, and the angle value θ2 of the first bandwidth dual-polarized antenna rotating to the left is calculated according to the corresponding PMW value;

[0031]

[0032] When rec_1=rec_2, the first bandwidth dual-polarized antenna vertically corresponds to the second bandwidth dual-polarized antenna or the third bandwidth dual-polarized antenna;

[0033] The horizontal distance between the first cage or the second cage and the first broadband dual-polarization antenna is a.

[0034] The present invention provides an adaptive beam scanning antenna system based on a differential ranging algorithm, which can simultaneously realize broadband dual polarization, high isolation and small size of the beam scanning antenna; and can realize low variation of beam scanning gain and lobe width in conjunction with a high-precision steering gear.

[0035] Because the antenna on the crossbeam keeps swinging adaptively with the cage, the effectiveness and reliability of the wireless receiving signal are directly improved technically.

[0036] In the vertical shaft wireless communication system, it is directly reflected in the mine telephone voice signal being more stable and clear, and the mine camera video signal being clearer and continuous.

[0037] The present invention can simplify a large number of steps and time for adjusting antennas, thereby improving the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 It is the shaft structure diagram;

[0040] Figure 2 It is the system module diagram;

[0041] Figure 3 This is the main chip product structure diagram;

[0042] Figure 4 is the first bandwidth dual-polarization antenna diagram;

[0043] Figure 5 (a) is the geometric diagram of the 8-element dual-polarized planar antenna array, and (b) is the prototype of the 8-element dual-polarized planar antenna array;

[0044] Figure 6 (a) is a diagram of simulation and measured values ​​of parameters of the first bandwidth dual-polarized antenna S11, and (b) is a diagram of simulation and measured values ​​of parameters of the first bandwidth dual-polarized antenna S21;

[0045] Figure 7 It is a diagram of the simulated and measured values ​​of the S parameters of the array antenna.

[0046] Figure 8 This is the CAD drawing of the motor antenna connector;

[0047] Fig. 9 It is the flow chart of point-to-point adaptive differential ranging algorithm;

[0048] Fig.10 This is a diagram of the installation position of the antenna on the beam. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] Figure 1 It is the shaft structure diagram; Figure 2 It is the system module diagram; Figure 1 The functional module diagram in the figure is the wireless module and antenna, etc.;

[0057] An adaptive beam scanning antenna system based on a differential ranging algorithm comprises a first bandwidth dual-polarized antenna, a second bandwidth dual-polarized antenna, a third bandwidth dual-polarized antenna, a first wireless module, a second wireless module, a third wireless module, a steering gear and a controller for receiving and sending video signals or audio signals;

[0058] The first bandwidth dual-polarized antenna is arranged at the top of the vertical shaft;

[0059] The second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna are respectively arranged on the first cage and the second cage;

[0060] The servo controls the swing of the first bandwidth dual-polarized antenna; the model of the servo is HX8-A45-M. Here, we divide the servo control angle into 2000 parts, and the control accuracy is 0.09°. Its electrical parameters are shown in Table 1. It supports PWM output, and the designed differential ranging algorithm is also based on PWM design.

[0061]

[0062]

[0063] Table 1

[0064] The second wireless module is used to measure the distance between the first bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna, and convert it into a first level signal;

[0065] The third wireless module is used to measure the distance between the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna, and convert it into a second level signal;

[0066] The first wireless module receives the first level signal sent by the second wireless module and the second level signal transmitted by the third wireless module;

[0067] The first wireless module is arranged at the top of the vertical shaft;

[0068] The model used by the first wireless module, the second wireless module and the third wireless module is E22-400T22S, and its product parameters are shown in Table 2. The main function of the first wireless module is to measure the distance and transmit the received level to the controller.

[0069]

[0070]

[0071] Table 2

[0072] The controller receives the first level signal and the second level signal transmitted by the third wireless module respectively, and identifies the bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on the point-to-point adaptive differential ranging algorithm, calculates the angle that the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal;

[0073] The steering gear controls and receives the control signal transmitted by the controller, and controls the first broadband dual-polarized antenna to rotate according to an angle, thereby corresponding to the broadband dual-polarized antenna that is farther away.

[0074] The chip used in the controller is STM32F103C8T6, which is equivalent to the core control brain of the entire system. Its L port and serial port are mainly used in this system. Figure 3 This is the main chip product structure diagram;

[0075] Furthermore, the first bandwidth dual-polarized antenna, the second bandwidth dual-polarized antenna, and the third bandwidth dual-polarized antenna have the same structure; the first bandwidth dual-polarized antenna, the second bandwidth dual-polarized antenna, and the third bandwidth dual-polarized antenna are applied to 2G / 3G / 4G / LTE base stations.

[0076] The first bandwidth dual polarization antenna is shown in Figure Figure 4 As shown;

[0077] The first bandwidth dual-polarized antenna includes two dipoles;

[0078] The dipole is in the shape of a bow tie;

[0079] The two dipoles are arranged vertically and crossed.

[0080] Figure 5 (a) is the geometric diagram of the 8-element dual-polarized planar antenna array, and (b) is the prototype of the 8-element dual-polarized planar antenna array;

[0081] The dipole is excited by a microstrip stub, which is directly fed by a coaxial line, making the dual-polarized antenna completely planar. The bow-tie shape is formed by an exponential function. The dipole profile is modeled using an exponential function to achieve diversified frequency selection. The cross-dipole profile is adjusted to excite coupling and achieve wide antenna bandwidth. The results show that due to the selection of appropriate exponential parameters for the applicable scenario, the designed dual-polarized antenna has a -15dB impedance bandwidth of 57% (1.69~3.05GHz); the isolation between the two polarization input ports is greater than 30dB; the half-power beamwidth of the first bandwidth dual-polarized antenna is greater than 75° at each frequency point, and the cross-polarization suppression is good. The first bandwidth dual-polarized antenna is planar, easy to tune, and miniaturized.

[0082] A 1×8 dual-polarization array antenna is designed and manufactured for base station applications. The -10dB bandwidth of the first bandwidth dual-polarization antenna is 59% (1.68~3.1GHz), the gain of the array antenna is 16.4~18.2dBi within the frequency band, and the half-power beamwidth is greater than 75°, which meets the base station antenna design standards.

[0083] Figure 6 (a) is a diagram of simulation and measured values ​​of parameters of the first bandwidth dual-polarized antenna S11, and (b) is a diagram of simulation and measured values ​​of parameters of the first bandwidth dual-polarized antenna S21;

[0084] The S parameters of the antenna are measured by a vector network analyzer. Figure 6 It can be seen that the measured antenna port 1 has a -15dB impedance bandwidth of 1.67 to 3.05GHz, and port 2 has a -15dB impedance bandwidth of 1.69 to 3.15GHz. Therefore, the -15dB impedance bandwidth of the dual-polarized antenna is 1.69 to 3.05GHz. The isolation is higher than 30dB within the impedance bandwidth, and the results are in good agreement with the simulation. The measured S11 and S22 have resonance points at 3GHz, which may be caused by improper processing such as welding.

[0085] Figure 7The figure is the simulation and measured value diagram of the S parameters of the array antenna. The -10dB bandwidth of the array antenna is about 59% (1.68~3.1GHz), and the measured isolation is greater than 25dB within the bandwidth. Compared with the unit antenna, the reduction in antenna array isolation is mainly due to the coupling between two adjacent antenna elements in different polarization directions and improper welding of the power divider feed end.

[0086] The system also includes an antenna connector: its main function is to facilitate the connection between the antenna and the steering gear. The CAD diagram of the antenna connector is as follows: Figure 8 shown.

[0087] Further: the controller identifies the bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on the point-to-point adaptive differential ranging algorithm, calculates the angle at which the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal as follows:

[0088] The RSSI value of the first cage sent by the first wireless module received by the controller is rec_1, and the RSSI value of the second cage sent by the second wireless module received by the controller is rec_2;

[0089] The distance between the first cage and the ground is h1, and the distance between the second cage and the ground is h2, h1+h2=H; the overall height of the shaft passage is H; the horizontal distance between the first cage or the second cage and the first bandwidth dual-polarized antenna is a, and the distance between the first cage or the second cage and the top antenna is h; the wireless module receiving level RSSI, RSSI corresponds to the distance h;

[0090] The signals at both ends are sampled at intervals of 1 second, and rec_1 and rec_2 are converted into h1 and h2 respectively.

[0091] The relationship between the transmission power and the receiving power of the wireless signal of the first bandwidth dual-polarized antenna, the second bandwidth dual-polarized antenna, or the third bandwidth dual-polarized antenna can be expressed by formula (1), where PR is the receiving power of the wireless signal, PT is the transmitting power of the wireless signal, s is the distance between the receiving unit and the sending unit, and n is the propagation factor, and the value depends on the environment in which the wireless signal propagates.

[0092] PR=PT / sn (1)

[0093] Taking the logarithm on both sides of formula (1) gives formula (2):

[0094] 10·nlgr=10lgPT / PR (2)

[0095] The transmission power of the node is known. Substituting the transmission power into equation (2) yields equation (3):

[0096] 10lgPR=A-10·nlgr (3)

[0097] The left half of equation (3), 10lgPR, is the expression for converting the received signal power into dBm, which can be directly written as equation (4). In equation (4), A can be regarded as the power of the received signal when the signal is transmitted 1 m away.

[0098] PR(dBm)=A-10·nlgr (4)

[0099] In the actual vertical shaft environment, it is necessary to use a network bridge to actually measure a set of data and calculate the size of the propagation factor n of the current environment.

[0100] According to relevant information, the closer the distance measured by RSSI ranging, the smaller the error;

[0101] Because the closer the distance is, the more accurate the received level value tested is, so the rotation angle required for the first bandwidth dual-polarized antenna to be aimed at the farther tank cage can be obtained based on the received level of the closer tank cage, and the h database is established. The swing angle of the first bandwidth dual-polarized antenna is calculated according to the following formulas (6) and (7), and the first bandwidth dual-polarized antenna swing angle database is established. The steering gear PWM signal is divided into 2000 parts according to the steering gear model, and the database of the PWM signal value of the steering gear is established according to the angle to swing and calibrate the first bandwidth dual-polarized antenna;

[0102]

[0103] Where: r is the straight-line distance from the first bandwidth dual-polarized antenna on the beam to the first cage or the second cage;

[0104] When rec_1-rec_2>0;

[0105] When H-h1=h2, the value of rec_2 is calculated by rec_1, the value interval of rec_2 is determined, and the angle value θ1 of the first bandwidth dual-polarized antenna rotating to the right is calculated according to the corresponding PMW value;

[0106]

[0107] When rec_1-rec_2<0;

[0108] According to H-h1=h2, the value of rec_1 is calculated through rec_2, the value interval of rec_1 is determined, and the angle value θ2 of the first bandwidth dual-polarized antenna rotating to the left is calculated according to the corresponding PMW value;

[0109]

[0110] The deflection angles of the first bandwidth dual-polarized antenna are θ1 and θ2. The deflection angles of the first bandwidth dual-polarized antenna on the center line are θ1 to the right and θ2 to the left.

[0111] When rec_1=rec_2, the first bandwidth dual-polarized antenna vertically corresponds to the second bandwidth dual-polarized antenna or the third bandwidth dual-polarized antenna;

[0112] The flowchart of the point-to-point adaptive differential ranging algorithm is as follows: Fig. 9 As shown;

[0113] The corresponding main program is as follows:

[0114]

[0115]

[0116] The following database is the actual test data and corresponding calculated data of a coal mine in Shanxi Province, which is the database of the deflection angle and PWM of the third bandwidth dual-polarization antenna corresponding to the second cage position.

[0117]

[0118] Since h1+h2=d (the length of the shaft channel), the second bandwidth dipole antenna deflection angle and PWM database corresponding to the first cage position correspond to it.

[0119] The distance between the first cage and the second cage is 10 meters, 500us~2500us, 180° is divided into 2000 parts, a=10;

[0120] Because the antenna on the beam keeps swinging adaptively with the cage, the effectiveness and reliability of the wireless reception signal are directly improved technically. In the vertical shaft wireless communication system, the voice signal of the mine telephone is more stable and clear, and the video signal of the mine camera is clearer and continuous.

[0121] When installing the wireless communication system in the vertical shaft, the installation and adjustment of the antenna on the beam has always been a dangerous task for test engineers. The actual scene position of the first bandwidth dual-polarization antenna on the beam is as follows: Fig.10 As shown, the black frame portion is the antenna installation position, which is about 5 to 7 meters from the ground. The present invention can greatly simplify the steps and time of adjusting the antenna, and improve the safety of construction workers.

[0122] When installing the wireless communication system in the vertical shaft, the installation and adjustment of the antenna on the beam has always been a dangerous task for test engineers. The actual scene position of the antenna on the beam is as follows: Fig.10 As shown, the red frame part is the antenna installation location, which is about 5 to 7 meters from the ground.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive beam scanning antenna system based on a differential ranging algorithm, characterized in that: It includes a first bandwidth dual-polarized antenna disposed at the top of the vertical shaft; A second bandwidth dual-polarized antenna and a third bandwidth dual-polarized antenna respectively arranged on the first tank cage and the second tank cage; a steering gear for controlling the swing of the first bandwidth dual-polarized antenna; A second wireless module for measuring the distance between the first bandwidth dual-polarized antenna and the second bandwidth dual-polarized antenna and converting the distance into a first level signal; a third wireless module configured to measure the distance between the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna and convert the distance into a second level signal; A first wireless module for receiving the first level signal sent by the second wireless module and the second level signal transmitted by the third wireless module respectively; a controller receiving a first level signal and a second level signal sent by the first wireless module, wherein the controller identifies a bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on a point-to-point adaptive differential ranging algorithm, calculates an angle at which the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal; The steering gear controls the receiving of the control signal transmitted by the controller, and controls the first bandwidth dual-polarized antenna to rotate according to the angle, so as to correspond to the bandwidth dual-polarized antenna that is farther away; The controller identifies the bandwidth dual-polarized antenna that is farther away from the first bandwidth dual-polarized antenna among the second bandwidth dual-polarized antenna and the third bandwidth dual-polarized antenna based on the point-to-point adaptive differential ranging algorithm, calculates the angle that the first bandwidth dual-polarized antenna needs to rotate, and sends a control signal as follows: The controller receives a first cage RSSI value sent by the first wireless module as rec_1, and the controller receives a second cage RSSI value sent by the second wireless module as rec_2; The distance between the first cage and the ground is h1, the distance between the second cage and the ground is h2, and the overall height of the well channel is H; h1+h2=H; The receiving levels of the first cage and the second cage are taken at intervals of 1 second, and rec_1 and rec_2 are converted into h1 and h2 respectively; When rec_1-rec_2>0; According to H-h1=h2, the value of rec_2 is calculated through rec_1, the value interval of rec_2 is determined, and the angle value θ1 of the first bandwidth dual-polarized antenna rotating to the right is calculated according to the corresponding PMW value; When rec_1-rec_2<0; According to H-h1=h2, the value of rec_1 is calculated through rec_2, the value interval of rec_1 is determined, and the angle value θ2 of the first bandwidth dual-polarized antenna rotating to the left is calculated according to the corresponding PMW value; When rec_1=rec_2, the first bandwidth dual-polarized antenna vertically corresponds to the second bandwidth dual-polarized antenna or the third bandwidth dual-polarized antenna; The horizontal distance between the first cage or the second cage and the first broadband dual-polarization antenna is a.

2. The adaptive beam scanning antenna system based on differential ranging algorithm according to claim 1, characterized in that: The first bandwidth dual-polarized antenna, the second bandwidth dual-polarized antenna, and the third bandwidth dual-polarized antenna have the same structure; The first bandwidth dual-polarized antenna includes two dipoles; The dipole is in the shape of a bow tie; The two dipoles are arranged vertically and crossed.

3. The adaptive beam scanning antenna system based on differential ranging algorithm as claimed in claim 2, characterized in that: The dipole is excited by a microstrip stub which is directly fed by the coaxial line, making the dual-polarized antenna completely planar.

4. The adaptive beam scanning antenna system based on differential ranging algorithm as claimed in claim 2, characterized in that: The bow-tie shape is formed by an exponential function.

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