A base station antenna attitude monitoring system based on sensor technology

Abstract

The present invention belongs to the field of antenna posture monitoring, and discloses a base station antenna posture monitoring system based on sensor technology, including a first posture detection module, a monitoring module, an error detection interval calculation module, a second posture detection module and an error judgment module; the first posture detection module is used to obtain the first posture information of the base station antenna and transmit it to the monitoring module; the monitoring module is used to monitor the posture of the base station antenna based on the first posture information; the error detection interval calculation module is used to calculate the error detection interval; the second posture detection module is used to obtain the second posture information of the base station antenna based on the error detection interval, and the error judgment module is used to obtain the error detection result of the first posture detection module based on the first posture information and the second posture information. The present invention reduces the difficulty of error detection of the first posture detection module, which is conducive to more timely discovery of abnormal situations in which the posture result obtained by the first posture detection module is abnormal.

Description

Technical Field

[0001] The invention relates to the field of antenna attitude monitoring, and in particular to a base station antenna attitude monitoring system based on sensor technology. Background Art

[0002] Traditional antenna attitude monitoring is generally achieved through dual GPS carrier phase differential technology. That is, by installing dual GPS positioning antennas on the base station antenna, the antenna's azimuth, downtilt angle and other attitude information are obtained through carrier phase differential. However, a single attitude measurement method is prone to large errors due to failures of equipment such as GPS positioning antennas. Since GPS positioning antennas are usually installed at relatively high positions, it is relatively difficult to detect errors in GPS positioning antennas. Since it is necessary to manually climb to the installation location of the base station antenna, another attitude measurement method is used to obtain the base station's attitude information, and then the difference between the attitude information obtained by the two measurement methods is compared to determine whether the attitude information of the base station antenna measured by the dual GPS positioning antenna has too large an error. This results in a long time interval for error detection of the dual GPS positioning antenna, resulting in the dual GPS positioning antenna measuring attitude information with too large an error over a long period of time, which may result in the inability to detect abnormal conditions in the attitude of the base station antenna in a timely manner. Therefore, how to reduce the difficulty of detecting errors in the GPS positioning antenna when using dual GPS positioning antennas to monitor the attitude of the base station antenna, thereby reducing the error detection interval and promptly discovering situations where the attitude results obtained by the GPS positioning antenna have excessive errors, so as to improve the accuracy of the base station antenna attitude monitoring results has become a technical problem that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to disclose a base station antenna attitude monitoring system based on sensor technology, so as to solve the problem of how to reduce the difficulty of error detection for GPS positioning antenna, so as to reduce the error detection interval, thereby improving the accuracy of base station antenna attitude monitoring results.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a base station antenna posture monitoring system based on sensor technology, comprising a first posture detection module, a monitoring module, an error detection interval calculation module, a second posture detection module and an error judgment module;

[0006] The first attitude detection module is used to periodically acquire first attitude information of the base station antenna by using dual GPS carrier attitude detection technology, and transmit the first attitude information to the monitoring module;

[0007] The monitoring module is used to monitor the posture of the base station antenna based on the first posture information;

[0008] The error detection interval calculation module is used to calculate the error detection interval for performing error detection on the first posture detection module;

[0009] The second posture detection module is used to obtain second posture information of the base station antenna based on the error detection interval, including:

[0010] Determine whether the time length between the current time and the start time of the zth error detection is equal to the error detection interval ErrDet corresponding to the z+1th error detection z+1 ,If so, the attitude measurement data of the base station antenna is obtained through the UAV;

[0011] Acquire second posture information of the base station antenna based on the posture measurement data;

[0012] The error judgment module is used to obtain the error detection result of the first posture detection module based on the first posture information and the second posture information.

[0013] Optionally, transmitting the first posture information to a monitoring module includes:

[0014] The first posture information is transmitted to the monitoring module by means of cellular communication.

[0015] Optionally, the monitoring module includes a posture information storage unit, a posture information comparison unit and a notification unit;

[0016] The posture information storage unit is used to store the target posture information of the communication base station;

[0017] The posture information comparison unit is used to compare the target posture information with the first posture information to determine whether the communication base station has an abnormal posture;

[0018] The notification unit is used to send an abnormal notification to the operation and maintenance personnel of the base station when the communication base station has an abnormal posture.

[0019] Optionally, comparing the target posture information with the first posture information to determine whether the communication base station has an abnormal posture includes:

[0020] The target attitude information includes a target downtilt angle and a target azimuth angle; the first attitude information includes a first downtilt angle and a first azimuth angle;

[0021] Calculate the absolute value AbsVal of the angle difference between the target downtilt angle and the first downtilt angle 1 ;

[0022] Calculate the absolute value AbsVal of the angle difference between the target azimuth and the first azimuth 2 ;

[0023] If AbsVal 1 Greater than the first angle threshold or AbsVal 2 If the angle is greater than the set second angle threshold, it indicates that the communication base station has an abnormal posture.

[0024] Optionally, calculating an error detection interval for performing error detection on the first posture detection module includes:

[0025] After the zth error detection of the first posture detection module is completed, the error detection interval ErrDet of the z+1th error detection of the first posture detection module is calculated. z+1 ,

[0026] The error detection interval ErrDet of the z+1th error detection of the first posture detection module z+1 The calculation formula is:

[0027]

[0028] ErrDet z Indicates the error detection interval corresponding to the zth error detection, JudgCef z and JudgCef z-1 They represent the error judgment coefficients obtained by the z-th and z-1-th error detections respectively; StbDet is a fixed duration;

[0029] Determine ErrDet z+1 Whether it exceeds the fluctuation range of the error detection interval, if so, ErrDet z+1 Make corrections and update ErrDet z+1 The value of .

[0030] Optional, judge ErrDet z+1 Whether the fluctuation range of the error detection interval is exceeded, including:

[0031] If ErrDet min ≤ErrDet z+1 ≤ErrDet max , then ErrDet z+1 The fluctuation range of ErrDet does not exceed the error detection interval. min and ErrDet max They respectively represent the maximum time length and the minimum time length of the preset error detection interval.

[0032] Optional, for ErrDet z+1 Make corrections and update ErrDet z+1 The values ​​include:

[0033] If ErrDet z+1 Less than ErrDet min , then ErrDet z+1 The value of ErrDet is updated min The value of

[0034] If ErrDet z+1 Greater than ErrDet max , then ErrDet z+1 The value of ErrDet is updated max The value of .

[0035] Optionally, the attitude measurement data includes an overhead image above the base station antenna and a video shot from the side around the base station antenna.

[0036] Optionally, the attitude measurement data of the base station antenna is obtained by the drone, including:

[0037] Control the drone to carry the camera to fly to a bird's-eye view position above the base station antenna, and use the camera to take a bird's-eye view of the base station antenna to obtain a bird's-eye view image;

[0038] Obtain the height H of the base station antenna bottom and the length L of the base station antenna;

[0039] exist The video is obtained by shooting horizontally around the side of the base station antenna at a height of 100 meters. The distance between the base station antenna and the drone during shooting is greater than the safe shooting distance of the drone.

[0040] Optionally, obtaining second posture information of the base station antenna based on the posture measurement data includes:

[0041] The second attitude information includes a second azimuth angle and a second downtilt angle;

[0042] Acquire a second azimuth angle of the base station antenna based on the overhead image;

[0043] A second downtilt angle of the base station antenna is obtained based on the video.

[0044] Beneficial effects:

[0045] Compared with the prior art, the present invention adopts a second attitude detection module based on a drone to perform error detection on the first attitude detection module, thereby effectively reducing the difficulty of error detection on the first attitude detection module, and can effectively reduce the interval of error detection on the first attitude detection module, which is conducive to more timely discovery of abnormal situations in the attitude results obtained by the first attitude detection module, so that communication operation and maintenance personnel can repair or replace the first attitude detection module in time, which is conducive to improving the accuracy of the base station antenna attitude monitoring results. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A schematic diagram of a base station antenna posture monitoring system based on sensor technology of the present invention.

[0048] Figure 2 A schematic diagram of a base station antenna posture monitoring system based on sensor technology of the present invention.

[0049] Figure 3 A schematic diagram of the area of ​​the base station antenna of the present invention.

[0050] Figure 4 A schematic diagram of the downtilt angle of the present invention.

[0051] Figure 5 A diagram showing the positional relationship between a support rod supporting a base station antenna and the base station antenna of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. 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.

[0053] like Figure 1 In one embodiment shown, the present invention provides a base station antenna posture monitoring system based on sensor technology, including a first posture detection module, a monitoring module, an error detection interval calculation module, a second posture detection module and an error judgment module;

[0054] The first attitude detection module is used to periodically acquire first attitude information of the base station antenna by using dual GPS carrier attitude detection technology, and transmit the first attitude information to the monitoring module;

[0055] Regular acquisition can be once a day;

[0056] The monitoring module is used to monitor the posture of the base station antenna based on the first posture information;

[0057] The error detection interval calculation module is used to calculate the error detection interval for performing error detection on the first posture detection module;

[0058] The second posture detection module is used to obtain second posture information of the base station antenna based on the error detection interval, including:

[0059] Determine whether the time length between the current time and the start time of the zth error detection is equal to the error detection interval ErrDet corresponding to the z+1th error detection z+1 ,If so, the attitude measurement data of the base station antenna is obtained through the UAV;

[0060] Acquire second posture information of the base station antenna based on the posture measurement data;

[0061] The error judgment module is used to obtain the error detection result of the first posture detection module based on the first posture information and the second posture information.

[0062] The above implementation scheme adopts a second attitude detection module based on a drone to perform error detection on the first attitude detection module, thereby effectively reducing the difficulty of error detection on the first attitude detection module, and can effectively reduce the interval of error detection on the first attitude detection module, which is conducive to more timely discovery of abnormal situations in which the attitude results obtained by the first attitude detection module are abnormal, so that communication operation and maintenance personnel can repair or replace the first attitude detection module in time, which is conducive to improving the accuracy of the base station antenna attitude monitoring results.

[0063] Optionally, transmitting the first posture information to a monitoring module includes:

[0064] The first posture information is transmitted to the monitoring module by means of cellular communication.

[0065] When the first posture detection module is arranged on the surface of the base station antenna, it can communicate with the base station antenna through cellular communication, and transmit the first posture information to the monitoring module through the base station antenna.

[0066] The monitoring module may be a computer device installed in a monitoring center.

[0067] In addition, the first posture detection module can also transmit the first posture information to the monitoring module via satellite communication. This transmission method can successfully transmit the first posture information when a base station where the base station antenna is located fails.

[0068] Optionally, the monitoring module includes a posture information storage unit, a posture information comparison unit and a notification unit;

[0069] The posture information storage unit is used to store the target posture information of the communication base station;

[0070] The posture information comparison unit is used to compare the target posture information with the first posture information to determine whether the communication base station has an abnormal posture;

[0071] The notification unit is used to send an abnormal notification to the operation and maintenance personnel of the base station when the communication base station has an abnormal posture.

[0072] The target attitude information is the attitude information planned before the base station antenna is installed. Since the base station antenna may have attitude deviation during use, it is necessary to regularly detect the attitude of the base station antenna to avoid the signal being weak in some areas due to excessive attitude deviation of the base station antenna, which affects the normal communication of mobile communication users.

[0073] The abnormal notification may include the location of the communication base station with the abnormal posture and the number of the communication base station. The abnormal notification may be delivered by popping up a dialog box on the computer used by the operation and maintenance personnel.

[0074] Optionally, comparing the target posture information with the first posture information to determine whether the communication base station has an abnormal posture includes:

[0075] The target attitude information includes a target downtilt angle and a target azimuth angle; the first attitude information includes a first downtilt angle and a first azimuth angle;

[0076] Calculate the absolute value AbsVal of the angle difference between the target downtilt angle and the first downtilt angle 1 ;

[0077] Calculate the absolute value AbsVal of the angle difference between the target azimuth and the first azimuth 2 ;

[0078] If AbsVal 1 Greater than the first angle threshold or AbsVal 2 If the angle is greater than the set second angle threshold, it indicates that the communication base station has an abnormal posture.

[0079] The target downtilt angle and the target azimuth angle are the downtilt angle and azimuth angle of the base station antenna in a desired posture.

[0080] The downtilt angle of the present invention refers to the vertical angle of the antenna's radiation direction relative to the horizontal plane. The azimuth angle refers to the horizontal angle formed in the clockwise direction between the antenna's maximum radiation direction and the reference direction (usually geographic north).

[0081] Optionally, the first angle threshold is 3° and the second angle threshold is 5°.

[0082] The first angle threshold and the second angle threshold here can be set according to actual needs.

[0083] Optionally, calculating an error detection interval for performing error detection on the first posture detection module includes:

[0084] After the zth error detection of the first posture detection module is completed, the error detection interval ErrDet of the z+1th error detection of the first posture detection module is calculated. z+1 ,

[0085] The error detection interval ErrDet of the z+1th error detection of the first posture detection module z+1 The calculation formula is:

[0086]

[0087] ErrDet z Indicates the error detection interval corresponding to the zth error detection, JudgCef z and JudgCef z-1 They represent the error judgment coefficients obtained by the z-th and z-1-th error detections respectively; StbDet is a fixed duration;

[0088] Determine ErrDet z+1 Whether it exceeds the fluctuation range of the error detection interval, if so, ErrDet z+1 Make corrections and update ErrDet z+1 The value of .

[0089] The error detection interval of the present invention is not a fixed value, but can change with the change of the relationship between the error judgment coefficients obtained by two adjacent error detections. When the error judgment coefficient is enlarged, it means that the probability of the existence of an error increases. At this time, the present invention shortens the error detection interval corresponding to the next error detection, which is conducive to more timely discovery of the error detection situation of the first posture detection module; when the error judgment coefficient is reduced, it means that the probability of the existence of an error is reduced, then the error detection interval corresponding to the next error detection is expanded, and the workload of error detection is reduced. Therefore, the acquisition method of the error detection interval of the present invention can detect the error in time when the probability of the existence of the detection error in the first posture detection module is large, and can also reduce the workload of error detection when the probability of the existence of the detection error is small. The effect of timely discovering the detection error existing in the first posture detection module is achieved while relying on less error detection workload overall.

[0090] In addition, the degree of change of the error detection interval of the present invention is not fixed, but can change with the change between two adjacent error judgment coefficients. When the degree of change of the error judgment coefficient is greater, the degree of change of the error detection interval is also correspondingly greater, thereby being able to better control the change of the error detection interval and achieve the effect of discovering the detection error more timely.

[0091] Optionally, z is a positive integer greater than or equal to 2, and the error detection interval of the first error detection and the error detection interval of the second error detection are equal to the preset time length. min At this time, starting from the time when the base station antenna is installed, the time length ErrDet min After that, the first error detection is performed on the first posture detection module for the first time. From the moment when the first error detection is completed, after the time length ErrDet min Afterwards, the first posture detection module is subjected to error detection for the second time.

[0092] In the present invention, starting from the third error detection, after the zth error detection is completed, the z+1th error detection interval is calculated. After the calculation of the z+1th error detection interval is completed, a countdown is started to determine whether the time length between the current moment and the completion moment of the z+1th error detection interval is equal to the error detection interval of the z+1th error detection. If equal, the z+2th error detection is entered.

[0093] Optional, for JudgCef z , and its calculation formula is:

[0094]

[0095] DowAng 2,z and AziAng 2,z Denote respectively the second azimuth angle and the second downtilt angle obtained by performing the error detection on the first attitude detection module for the zth time; DowAng 1,z and AziAng 1,z Indicates the distance from the acquisition time DowAng 2,z The first azimuth and first downtilt angle closest to the acquisition time; AngThre 3 and AngThre 4 Respectively represent the third angle threshold and the fourth angle threshold set, μ 1 Represents the weight of the accumulated working hours, μ 2 represents the weight of error detection, μ 3 DesDur is the weight of the angle change, DesDur is the design service life of the base station antenna, AumDur zIndicates the cumulative service time of the base station antenna when the zth error detection of the first attitude detection module ends, DowAng 1,z,ner and AziAng 1,z,ner Respectively represent the acquisition time distance DowAng 1,z The first downtilt angle and the first azimuth angle most recent at the acquisition moment.

[0096] The error judgment coefficient of the present invention not only takes into account the cumulative service time of the base station antenna, but also takes into account the total error between the downtilt angle and the azimuth angle obtained by error detection, and the change between the downtilt angle and the azimuth angle obtained by the first attitude module acquiring the first attitude information twice in a row. By weighted summation of these three factors, an error judgment coefficient that more accurately represents the size of the possibility of error can be comprehensively obtained. This is conducive to more accurately controlling the change of the error detection interval.

[0097] The acquisition time of the present invention refers to the time when the angle is calculated.

[0098] Optional, μ 1 , μ 2 and μ 3 The values ​​of are 0.2, 0.6 and 0.2 respectively.

[0099] Optionally, the third angle threshold and the fourth angle threshold are 5° and 10° respectively.

[0100] The third angle threshold and the fourth angle threshold can be set according to actual needs.

[0101] Optional, judge ErrDet z+1 Whether the fluctuation range of the error detection interval is exceeded, including:

[0102] If ErrDet min ≤ErrDet z+1 ≤ErrDet max , then ErrDet z+1 The fluctuation range of ErrDet does not exceed the error detection interval. min and ErrDet max They respectively represent the maximum time length and the minimum time length of the preset error detection interval.

[0103] By judging the fluctuation range, it is possible to avoid the error detection interval value being too large or too small. If it is too large, it is impossible to effectively reduce the error detection interval when the possibility of detection error is high; if it is too small, it is impossible to quickly increase the error detection interval when the possibility of detection error is low.

[0104] Optional, the maximum and minimum time lengths are 60 days and 15 days respectively.

[0105] Optional, fixed duration is 5 days.

[0106] Optional, for ErrDet z+1 Make corrections and update ErrDet z+1 The values ​​include:

[0107] If ErrDet z+1 Less than ErrDet min , then ErrDet z+1 The value of ErrDet is updated min The value of

[0108] If ErrDet z+1 Greater than ErrDet max , then ErrDet z+1 The value of ErrDet is updated max The value of .

[0109] Optionally, the attitude measurement data includes an overhead image above the base station antenna and a video shot from the side around the base station antenna.

[0110] Optionally, the attitude measurement data of the base station antenna is obtained by the drone, including:

[0111] Control the drone to carry the camera to fly to a bird's-eye view position above the base station antenna, and use the camera to take a bird's-eye view of the base station antenna to obtain a bird's-eye view image;

[0112] Obtain the height H of the base station antenna bottom and the length L of the base station antenna;

[0113] exist The video is obtained by shooting horizontally around the side of the base station antenna at a height of 100 meters. The distance between the base station antenna and the drone during shooting is greater than the safe shooting distance of the drone.

[0114] Optionally, shoot horizontally around the sides of the base station antenna, including:

[0115] The shooting is performed 360° horizontally around the base station antenna. When shooting, the plane where the image sensor of the shooting equipment carried by the drone is located is perpendicular to the horizontal plane of the real space.

[0116] Optionally, the safe shooting distance of the drone of the present invention is set to 3 meters.

[0117] Optionally, the overhead image includes a base station antenna and a support pole for supporting the base station antenna.

[0118] Optionally, the overhead shooting position is a position directly above the base station antenna, and the distance between this position and the base station antenna is greater than the safe shooting distance of the drone.

[0119] Optionally, obtaining second posture information of the base station antenna based on the posture measurement data includes:

[0120] The second attitude information includes a second azimuth angle and a second downtilt angle;

[0121] Acquire a second azimuth angle of the base station antenna based on the overhead image;

[0122] A second downtilt angle of the base station antenna is obtained based on the video.

[0123] Optional, such as Figure 2 As shown, obtaining a second azimuth angle of the base station antenna based on the overhead image includes:

[0124] Identifying, from the overhead image, an area of ​​a top of a support pole supporting a base station antenna and an area of ​​a top of the base station antenna;

[0125] Connect the center of the area at the top of the support pole and the center of the top of the base station antenna to obtain the first straight line segment LinSeg 1 ;

[0126] LinSeg 1 The line segment representing the true north direction in the real space in the overhead image (i.e. Figure 2 The angle between the line segment LinA in the clockwise direction (i.e. Figure 2 angA) in as the second azimuth angle.

[0127] Figure 5 This is a diagram showing the positional relationship between the support rod supporting the base station antenna and the base station antenna of the present invention. Figure 5 In the figure, the one pointing vertically downward is the support pole, and the one tilted to the right is the base station antenna. The connecting accessories between the two are not drawn.

[0128] Optionally, obtaining a second downtilt angle of the base station antenna based on the video includes:

[0129] The first step is to save all frames in the video into the set SetFra; number the frames in SetFra in the order of shooting time from early to late;

[0130] In the second step, the downtilt angle DwnAng corresponding to the frame numbered 1 and the frame numbered 2 is calculated respectively. 2,1 The downtilt angle DwnAng corresponding to the frame numbered 2 2,2 ;

[0131] The third step is to determine DwnAng 2,1Is it greater than DwnAng? 2,2 If yes, go to step 4; if no, go to step 9;

[0132] Step 4: Initialize the value of k to 3;

[0133] Step 5: Calculate the frame numbered k to obtain the downtilt angle DwnAng corresponding to the frame numbered k. 2,k ;

[0134] Step 6: Determine DwnAng 2,k Is it greater than DwnAng? 2,k-1 , if yes, go to step 7, if no, go to step 8;

[0135] Step 7: Add 1 to the value of k and go to step 5;

[0136] Step 8: DwnAng 2,k as a finally determined second downtilt angle of the base station antenna;

[0137] Step 9, use N to represent the total number of frames, and initialize the value of n to N;

[0138] Step 10: Calculate the frame numbered n to obtain the downtilt angle DwnAng corresponding to the frame numbered n. 2,n ;

[0139] Step 11: Determine the second downward inclination angle DwnAng 2,n Is it greater than DwnAng? 2,n-1 , if yes, go to step 12, if no, go to step 13;

[0140] Step 12: reduce the value of n by 1 and go to step 10;

[0141] Step 13: DwnAng 2,n The finally determined second downtilt angle of the base station antenna.

[0142] The traditional way of obtaining the downtilt angle from a video is to calculate the downtilt angle for each frame and then use the maximum downtilt angle as the final calculated downtilt angle. However, this calculation method requires calculating the downtilt angle for all frames, so the amount of calculation is large, making the speed of obtaining the downtilt angle too slow.

[0143] The method adopted by the present invention is different. First, the relationship between the downtilt angles of the two frames with the earliest shooting time is compared. Then, the corresponding calculation direction is selected based on the size relationship, that is, the downtilt angle of the frame is obtained along the direction of increasing number or along the direction of decreasing number. In this way, the present invention only needs to calculate The frame can get the accurate downtilt angle detection result. Thereby greatly improving the efficiency of obtaining the downtilt angle. This is because the present invention is filmed along the same horizontal height when acquiring the video, so that the downtilt angle in the frames in the set will show the characteristics of first increasing and then decreasing or first decreasing and then increasing as the number increases. Therefore, the present invention utilizes this feature. When the downtilt angle increases as the number increases, the present invention acquires the downtilt angle of the frame along the direction of increasing number, and vice versa, it acquires the downtilt angle along the direction of decreasing number. Thereby, the accurate downtilt angle can be obtained without calculating all the frames.

[0144] The maximum downtilt angle occurs when the plane where the image sensor is located is parallel to the support pole supporting the base station antenna and the plane where the antenna is located.

[0145] Optionally, for the frame Fra, the process of obtaining the downtilt angle corresponding to Fra includes:

[0146] like Figure 3 As shown, the area of ​​the base station antenna in Fra is obtained (i.e. Figure 3 The rectangular connected domain where the second straight line segment is located);

[0147] Connect the midpoint of the line segment at the top of the region and the midpoint of the line segment at the bottom of the region to obtain the second straight line segment LinSeg 2 ;

[0148] like Figure 4 As shown, LinSeg is represented by θ 2 If the angle between the two angles formed with the perpendicular line to the center of Fra is less than 90°, the downtilt angle is 90°-θ.

[0149] exist Figure 4 In the 2 Extend it until it intersects the vertical line.

[0150] Optionally, obtaining an error detection result of a first posture detection module based on the first posture information and the second posture information includes:

[0151] The first posture information includes a first azimuth angle and a first downtilt angle of the base station antenna; the second posture information includes a second azimuth angle and a second downtilt angle of the antenna;

[0152] Use DowAng 2,z and AziAng 2,z represents the second azimuth angle and the second downtilt angle obtained by performing error detection on the first posture detection module for the zth time;

[0153] Use DowAng 1,z and AziAng 1,zIndicates the acquisition time and distance using DowAng 2,z The first azimuth and first downtilt angle closest to the acquisition time;

[0154] If | DowAng 2,z -DowAng 1,z |≥AngThre 3 or |AziAng 2,z -AziAng 1,z |≥AngThre 4 , the error detection result is unqualified, otherwise, the error detection result is qualified.

[0155] Optionally, it also includes an error notification module, which is used to send an error notification to the operation and maintenance personnel of the base station when the error detection result is unqualified.

[0156] The error notification includes the location and number of the base station where the first posture detection module where the detection error occurs is located.

[0157] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A base station antenna attitude monitoring system based on sensor technology, characterized in that: It includes a first posture detection module, a monitoring module, an error detection interval calculation module, a second posture detection module and an error judgment module; The first attitude detection module is used to periodically acquire first attitude information of the base station antenna by using dual GPS carrier attitude detection technology, and transmit the first attitude information to the monitoring module; The monitoring module is used to monitor the posture of the base station antenna based on the first posture information; The error detection interval calculation module is used to calculate the error detection interval for performing error detection on the first posture detection module; The second posture detection module is used to obtain second posture information of the base station antenna based on the error detection interval, including: Determine whether the time length between the current time and the start time of the zth error detection is equal to the error detection interval ErrDet corresponding to the z+1th error detection z+1 ,If so, the attitude measurement data of the base station antenna is obtained through the UAV; Acquire second posture information of the base station antenna based on the posture measurement data; The error judgment module is used to obtain the error detection result of the first posture detection module based on the first posture information and the second posture information; Calculating an error detection interval for performing error detection on a first posture detection module includes: After the zth error detection of the first posture detection module is completed, the error detection interval ErrDet of the z+1th error detection of the first posture detection module is calculated. z+1 , The error detection interval ErrDet of the z+1th error detection of the first posture detection module z+1 The calculation formula is: ErrDet z Indicates the error detection interval corresponding to the zth error detection, JudgCef z and JudgCef z-1 They represent the error judgment coefficients obtained by the z-th and z-1-th error detections respectively; StbDet is a fixed duration; Determine ErrDet z+1 Whether it exceeds the fluctuation range of the error detection interval, if so, ErrDet z+1 Make corrections and update ErrDet z+1 The value of For JudgCef z , and its calculation formula is: DowAng 2,z and AziAng 2,z Denote respectively the second azimuth angle and the second downtilt angle obtained by performing the error detection on the first attitude detection module for the zth time; DowAng 1,z and AziAng 1,z Indicates the distance from the acquisition time DowAng 2,z The first azimuth angle and the first downtilt angle closest to the acquisition time; AngThre3 and AngThre4 represent the third angle threshold and the fourth angle threshold set respectively, μ1 represents the weight of the accumulated working time, μ2 represents the weight of the error detection, μ3 represents the weight of the angle change, DesDur is the designed service time of the base station antenna, AumDur z It indicates the cumulative service time of the base station antenna when the error detection of the first attitude detection module is completed for the zth time, DowAng 1,z,ner and AziAng 1,z,ner Respectively represent the acquisition time distance DowAng 1,z The first downtilt angle and the first azimuth angle most recent at the acquisition moment.

2. The base station antenna attitude monitoring system based on sensor technology according to claim 1 is characterized in that: Transmitting the first posture information to the monitoring module includes: The first posture information is transmitted to the monitoring module by means of cellular communication.

3. The base station antenna attitude monitoring system based on sensor technology according to claim 1 is characterized in that: The monitoring module includes a posture information storage unit, a posture information comparison unit and a notification unit; The posture information storage unit is used to store the target posture information of the communication base station; The posture information comparison unit is used to compare the target posture information with the first posture information to determine whether the communication base station has an abnormal posture; The notification unit is used to send an abnormal notification to the operation and maintenance personnel of the base station when the communication base station has an abnormal posture.

4. The base station antenna attitude monitoring system based on sensor technology according to claim 3 is characterized in that: Comparing the target posture information with the first posture information to determine whether the communication base station has an abnormal posture includes: The target attitude information includes a target downtilt angle and a target azimuth angle; the first attitude information includes a first downtilt angle and a first azimuth angle; Calculate the absolute value AbsVal1 of the angle difference between the target downtilt angle and the first downtilt angle; Calculate the absolute value AbsVal2 of the angle difference between the target azimuth and the first azimuth; If AbsVal1 is greater than the set first angle threshold or AbsVal2 is greater than the set second angle threshold, it indicates that the communication base station has an abnormal posture.

5. The base station antenna attitude monitoring system based on sensor technology according to claim 1 is characterized in that: Determine ErrDet z+1 Whether the fluctuation range of the error detection interval is exceeded, including: If ErrDet min ≤ErrDet z+1 ≤ErrDet max , then ErrDet z+1 The fluctuation range of ErrDet does not exceed the error detection interval. min and ErrDet max They respectively represent the maximum time length and the minimum time length of the preset error detection interval.

6. The base station antenna attitude monitoring system based on sensor technology according to claim 5 is characterized in that: ErrDet z+1 Make corrections and update ErrDet z+1 The values ​​include: If ErrDet z+1 Less than ErrDet min , then ErrDet z+1 The value of ErrDet is updated min The value of If ErrDet z+1 Greater than ErrDet max , then ErrDet z+1 The value of ErrDet is updated max The value of .

7. The base station antenna attitude monitoring system based on sensor technology according to claim 1 is characterized in that: The attitude measurement data includes overhead images from above the base station antenna and videos shot from the sides around the base station antenna.

8. The base station antenna attitude monitoring system based on sensor technology according to claim 7 is characterized in that: The attitude measurement data of the base station antenna is obtained through the drone, including: Control the drone to carry the camera to fly to a bird's-eye view position above the base station antenna, and use the camera to take a bird's-eye view of the base station antenna to obtain a bird's-eye view image; Obtain the height H of the base station antenna bottom and the length L of the base station antenna; exist The video is obtained by shooting horizontally around the side of the base station antenna at a height of 100 meters. The distance between the base station antenna and the drone during shooting is greater than the safe shooting distance of the drone.

9. The base station antenna attitude monitoring system based on sensor technology according to claim 7, characterized in that: Acquiring second attitude information of the base station antenna based on the attitude measurement data includes: The second attitude information includes a second azimuth angle and a second downtilt angle; Acquire a second azimuth angle of the base station antenna based on the overhead image; A second downtilt angle of the base station antenna is obtained based on the video.

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