Orthogonal magnetic ring antenna, azimuth angle calibration method and calibration device

Abstract

The invention provides an orthogonal magnetic ring antenna, an azimuth angle calibration method and an azimuth angle calibration device, the orthogonal magnetic ring antenna comprises a magnetic field antenna assembly and an electric field antenna, the magnetic field antenna assembly comprises a top plate, a bottom plate, a first column group, a second column group, a first induction antenna, a second induction antenna and a circuit board, the first stand column set and the second stand column set are connected with the top plate and the bottom plate, the circuit board is fixed to the top end face of the bottom plate, and the first induction antenna extends on the first stand column set and between the top plate and the bottom plate along a first path to form an annular structure which surrounds the outer side of the circuit board and is connected with the circuit board. And the second induction antenna extends on the second upright post group and between the top plate and the bottom plate along a second path to form an annular structure which surrounds the outer side of the circuit board and is connected with the circuit board. The first induction antenna and the second induction antenna can be conveniently installed, and the installation mode of the first induction antenna and the second induction antenna is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of lightning monitoring and early warning, in particular to an orthogonal magnetic loop antenna, an azimuth calibration method and a calibration device. Background Art

[0002] The formation and occurrence of lightning are accompanied by a variety of physical effects, including changes in the atmospheric electric field caused by the formation and occurrence of lightning, flashes, strong electromagnetic radiation, and large currents generated during lightning discharge. These physical effects caused by lightning can cause serious harm to people's production and life in the fields of electricity, communications, transportation, petrochemicals, etc.

[0003] Ground atmospheric electric field detection equipment is one of the important equipment for lightning warning. Among them, the orthogonal magnetic loop antenna is one of the important components for lightning signal detection.

[0004] A patent with publication number CN102175929A discloses an integrated synchronous comprehensive observation system for lightning electromagnetic signals, including a three-dimensional magnetic antenna with a three-dimensional cage structure composed of a first vertical orthogonal magnetic ring, a second vertical orthogonal magnetic ring and a horizontal magnetic ring. The first vertical orthogonal magnetic ring, the second vertical orthogonal magnetic ring and the horizontal magnetic ring are perpendicular and orthogonal to each other, and are all composed of a non-magnetic metal shielding body and a metal wire coil wound on a skeleton, wherein the non-magnetic metal shielding body is used to shield the crosstalk of the magnetic field signal, and the metal wire coil is used to sense the change of the magnetic field, and the number of turns of the wire coil depends on the detection sensitivity requirement.

[0005] However, the metal wire coil is arranged on the frame in a winding manner, and the detection sensitivity corresponds to the number of turns of the wire coil, which cannot increase the installation efficiency of the wire coil and is not convenient for adjusting the detection sensitivity later. Summary of the invention

[0006] In view of the shortcomings existing in the above problems, the present invention provides an orthogonal magnetic loop antenna, an azimuth calibration method and a calibration device which are convenient for installing the first sensing antenna and the second sensing antenna and simplify the installation method of the first sensing antenna and the second sensing antenna.

[0007] To achieve the above-mentioned purpose, in a first aspect, the present invention provides an orthogonal magnetic loop antenna for collecting magnetic field signals, comprising a magnetic field antenna assembly and an electric field antenna fixed on the top of the magnetic field antenna assembly, wherein the magnetic field antenna assembly comprises a top plate, a bottom plate, a first column group, a second column group, a first induction antenna, a second induction antenna and a circuit board, wherein the first column group and the second column group are both connected to the top plate and the bottom plate, the circuit board is fixed on the top end surface of the bottom plate, the first induction antenna extends along a first path on the first column group and between the top plate and the bottom plate to form a ring structure surrounding the outside of the circuit board and connected to the circuit board, and the second induction antenna extends along a second path on the second column group and between the top plate and the bottom plate to form a ring structure surrounding the outside of the circuit board and connected to the circuit board.

[0008] In one embodiment, the first sensing antenna is perpendicular to the second sensing antenna, and in an orthographic projection perspective, a portion of the first sensing antenna overlaps a portion of the second sensing antenna.

[0009] In one embodiment, the first column group includes a first column a and a first column b, wherein the first column a and the first column b are opposite to each other and spaced apart, and the first sensing antenna extends along a first path in sequence on the first column a, the spaced area between the first column a and the first column b, and the first column b, and then is connected to two ends of the circuit board;

[0010] The second column group includes a second column a and a second column b, wherein the second column a and the second column b are opposite to each other and are arranged at intervals, and the second sensing antenna extends along the second path in sequence on the second column a, the interval area between the second column a and the second column b, and the second column b, and is then connected to the two ends of the circuit board.

[0011] In one embodiment, a gap is formed between the first sensing antenna and the first pillar a and the first pillar b;

[0012] A gap is formed between the second sensing antenna and the second pillar a and the second pillar b.

[0013] In one embodiment, a first upper support a and a first lower support a are provided on the first column a, a first upper support b and a first lower support b are provided on the first column b, and a portion of the first sensing antenna is placed in the first upper support a, the first lower support a, the first upper support b and the first lower support b;

[0014] A second upper support a and a second lower support a are arranged on the second column a, a second upper support b and a second lower support b are arranged on the second column b, and a part of the second sensing antenna is placed in the second upper support a, the second lower support a, the second upper support b and the second lower support b.

[0015] In one embodiment, first grooves are formed in the first upper support member a, the first lower support member a, the first upper support member b and the first lower support member b, and a portion of the first sensing antenna is placed in each of the first grooves;

[0016] Second grooves are formed in the second upper support member a, the second lower support member a, the second upper support member b, and the second lower support member b, and a portion of the second sensing antenna is placed in each of the second grooves.

[0017] In one embodiment, the circuit board is solidified with a first interface a, a first interface b, a second interface a, a second interface b, a first connecting column a, a first connecting column b, a second connecting column a and a second connecting column b, wherein the first interface a and the first interface b are respectively connected to the first connecting column a and the first connecting column b, the second interface a and the second interface b are respectively connected to the second connecting column a and the second connecting column b, the two ends of the first sensing antenna are respectively connected to the first interface a and the first interface b, the two ends of the second sensing antenna are respectively connected to the second interface a and the second interface b, and the first connecting column a and the first connecting column b, as well as the second connecting column a and the second connecting column b are all connected to the processor via a transmission line.

[0018] In one embodiment, a protective plate is further provided on the outer sides of the first column group, the second column group and the circuit board, wherein the protective plate is made of a conductive material or a material containing a conductive substance.

[0019] In one embodiment, the electric field antenna is connected to the processor via a transmission line.

[0020] In a second aspect, the present invention further provides an azimuth calibration method for calibrating the azimuth of the above-mentioned orthogonal magnetic loop antenna, comprising the following steps:

[0021] After the orthogonal magnetic loop antenna is rotated to the current detection position, the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device, and obtain the current detection position of the orthogonal magnetic loop antenna;

[0022] Calling the preset calibration azimuth when the orthogonal magnetic loop antenna is in the current detection position;

[0023] Obtaining the current azimuth angle when the magnetic field antenna assembly is at the current detection position;

[0024] The current azimuth is compared with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth.

[0025] In a third aspect, the present invention further provides a calibration device for implementing the above-mentioned azimuth calibration method, comprising:

[0026] Lightning signal simulation equipment generates and releases a set magnetic field signal according to input instructions;

[0027] A rotating component is fixed inside the lightning signal simulation device and rotates the orthogonal magnetic loop antenna to a current detection position;

[0028] An orthogonal magnetic ring antenna, fixed on the rotating assembly, includes an electric field antenna and a magnetic field antenna assembly, wherein the electric field antenna is fixed on the top end surface of the magnetic field antenna assembly, wherein the electric field antenna and the magnetic field antenna assembly respectively obtain magnetic field signals;

[0029] A processor, configured to obtain at least a first magnetic field signal value, a second magnetic field signal value, a preset calibration azimuth corresponding to a current detection position, and a preset calibration magnetic field signal value;

[0030] Obtaining a current azimuth according to the first magnetic field signal value and the second magnetic field signal value;

[0031] The current azimuth is compared with the calibrated azimuth, and if it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth.

[0032] Compared with the prior art, the present invention has one of the following advantages:

[0033] In the present invention, the first sensing antenna is arranged on the first column group along the first path and then connected to the circuit board, and the second sensing antenna is arranged on the second column group along the second path and then connected to the circuit board, which facilitates the installation of the first sensing antenna and the second sensing antenna, simplifies the installation method of the first sensing antenna and the second sensing antenna, and there is no need to set the number of turns of the first sensing antenna and the second sensing antenna according to the detection sensitivity in the later stage;

[0034] The circuit board is fixed on the top end surface of the bottom plate, which can reduce the volume of the orthogonal magnetic loop antenna;

[0035] The calibration method and the calibration device of the present invention can accurately calibrate the azimuth of the lightning detection component to ensure that the current azimuth is the same as the calibrated azimuth, thereby ensuring the accuracy and reliability of the lightning detection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional diagram of the orthogonal magnetic loop antenna in this embodiment;

[0037] Figure 2 for Figure 1 Exploded diagram of

[0038] Figure 3 is a flow chart of the calibration method of the present invention;

[0039] Figure 4 is a flow chart of a first embodiment of the calibration method of the present invention;

[0040] Figure 5 is a flow chart of a second embodiment of the calibration method of the present invention;

[0041] Figure 6 It is a stereoscopic diagram of the calibration device in this embodiment.

[0042] The main reference numerals are as follows:

[0043] 1-lightning signal simulation device; 2-electric field antenna; 201-notch; 3-magnetic field antenna assembly; 301-top plate; 302-bottom plate; 303-first column a; 304-first column b; 305-first induction antenna; 306-first upper support a; 307-first lower support a; 308-first upper support b; 309-first lower support b; 310-second column a; 311-second column b; 312-second induction antenna; 313-second upper support a; 314-second lower support a; 315-second lower support b; 316-circuit board; 4-rotation assembly; 401-bottom fixing member; 402-rotation shaft assembly; 403-dial; 404-tray; 405-pointer; 5-orthogonal magnetic loop antenna. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. 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.

[0045] like Figure 1 and Figure 2 As shown, this embodiment provides an orthogonal magnetic loop antenna 5 for collecting signals, including a magnetic field antenna component 3 and an electric field antenna 2 fixed on the top of the magnetic field antenna component 3.

[0046] In this embodiment, the electric field antenna 2 may be, but is not limited to, an electric field fast-varying antenna, an electric field slow-varying antenna, or an electric field induction antenna.

[0047] Preferably, the electric field antenna 2 is an electric field fast-changing antenna, which generates a third magnetic field signal after collecting the magnetic field signal released outward by the Helmholtz coil.

[0048] In addition, the electric field antenna 2 is connected to an external third processor through a third transmission line to input the third magnetic field signal into the third processor.

[0049] In this embodiment, the magnetic field antenna assembly 3 includes a top plate 301, a bottom plate 302, a first column group, a second column group, a first induction antenna 305, a second induction antenna 312 and a circuit board 316, wherein the first column group and the second column group are both connected to the top plate 301 and the bottom plate 302, and the circuit board 316 is fixed on the top end surface of the bottom plate 302. The first induction antenna 305 extends along a first path on the first column group and between the top plate 301 and the bottom plate 302, forming a ring structure surrounding the outside of the circuit board 316 and connected to the circuit board 316, and is used to collect the first magnetic field signal released outward by the lightning signal simulation device. The second induction antenna 312 extends along a second path on the second column group and between the top plate 301 and the bottom plate 302, forming a ring structure surrounding the outside of the circuit board 316 and connected to the circuit board 316, and is used to collect the second magnetic field signal released outward by the lightning signal simulation device.

[0050] Specifically, the top plate 301 is in the shape of a cross structure, and a plurality of supporting protrusions are provided on the top end surface of each end of the cross structure. The electric field antenna 2 is arranged on the top of the top plate 301 through the plurality of supporting protrusions and faces the lightning signal simulation device.

[0051] Specifically, the shape of the bottom plate 302 is roughly similar to a cross-shaped structure. The circuit board 316 is fixed on the bottom plate 302 through support columns and fasteners and is located at the center of the bottom plate 302.

[0052] Furthermore, the bottom plate 302 includes a square platform and extensions connected to the side walls of the platform, wherein the extensions are located directly below the end portions.

[0053] Specifically, the first sensing antenna 305 is perpendicular to the second sensing antenna 312 , and in the orthographic projection perspective, a portion of the first sensing antenna 305 overlaps a portion of the second sensing antenna 312 .

[0054] Further, a portion of the first sensing antenna 305 is located above a portion of the second sensing antenna 312 .

[0055] Specifically, the first column group includes a first column a303 and a first column b304 with the same structure, wherein the first column a303 and the first column b304 are opposite to each other and arranged at intervals, and are correspondingly connected to the top plate 301 and the bottom plate 302 respectively through fasteners, and the first sensing antenna 305 extends along the first path in sequence on the first column a303, the interval area between the first column a303 and the first column b304, and on the first column b304, and is then connected to both ends of the circuit board 316.

[0056] Further, the first column a303 includes a first middle portion a, a first upper end portion a and a first lower end portion a, and the first upper end portion a and the first lower end portion a are fixed to the two ends of the first middle portion a accordingly. The first upper end portion a includes a first upper through hole a and a first upper connecting end a, and the first upper end portion a is connected to the adjacent end portion through the first connecting end a. The first lower end portion a includes a first lower through hole a and a first lower connecting end a, and the first lower end portion a is connected to the adjacent extension end through the first lower connecting end a.

[0057] Further, the first column b304 includes a first middle portion b, a first upper end portion b and a first lower end portion b, and the first upper end portion b and the first lower end portion b are fixed to the two ends of the first middle portion b accordingly. The first upper end portion b includes a first upper through hole b and a first upper connecting end b, and the first upper end portion b is connected to the adjacent end portion through the first connecting end b. The first lower end portion b includes a first lower through hole b and a first lower connecting end b, and the first lower end portion b is connected to the adjacent extension end through the first lower connecting end b.

[0058] Specifically, the second column group includes a second column a310 and a second column b311 with the same structure, wherein the second column a310 and the second column b311 are opposite to each other and arranged at intervals, and are correspondingly connected to the top plate 301 and the bottom plate 302 respectively through fasteners, and the second sensing antenna 312 extends along the second path in sequence on the second column a310, the interval area between the second column a310 and the second column b311, and on the second column b311, and is then connected to both ends of the circuit board 316.

[0059] Further, the second column a310 includes a second middle portion a, a second upper end portion a and a second lower end portion a, and the second upper end portion a and the second lower end portion a are fixed to the two ends of the second middle portion a accordingly. The second upper end portion a includes a second upper through hole a and a second upper connecting end a, and the second upper end portion a is connected to the adjacent end portion through the second connecting end a. The second lower end portion a includes a second lower through hole a and a second lower connecting end a, and the second lower end portion a is connected to the adjacent extension end through the second lower connecting end a.

[0060] Further, the second column b311 includes a second middle portion b, a second upper end portion b and a second lower end portion b, and the second upper end portion b and the second lower end portion b are fixed to the two ends of the second middle portion b accordingly. The second upper end portion b includes a second upper through hole b and a second upper connecting end b, and the second upper end portion b is connected to the adjacent end portion through the second connecting end b. The second lower end portion b includes a second lower through hole b and a second lower connecting end b, and the second lower end portion b is connected to the adjacent extension end through the second lower connecting end b.

[0061] In this embodiment, further, a gap is formed between the first sensing antenna 305 and the first column a303 and the first column b304, and a gap is formed between the second sensing antenna 312 and the second column a310 and the second column b311.

[0062] Furthermore, a first upper support a306 and a first lower support a307 are provided on the first column a303, wherein a portion of the first upper support a306 is fixed to the first upper end a, and another portion is placed in the first upper through hole a. A portion of the first lower support a307 is fixed to the first lower end a, and another portion is placed in the first lower through hole a. In addition, a first groove for clamping the first sensing antenna 305 is formed on both the first upper support a306 and the first lower support a307.

[0063] Furthermore, a first upper support member b308 and a first lower support member b309 are provided on the first column b304, wherein a portion of the first upper support member b308 is fixed to the first upper end b, and another portion is placed in the first upper through hole b. A portion of the first lower support member b309 is fixed to the first lower end b, and another portion is placed in the first lower through hole b. In addition, a first groove for clamping the first sensing antenna 305 is formed on both the first upper support member b308 and the first lower support member b309.

[0064] Furthermore, a second upper support a313 and a second lower support a314 are provided on the second column a310, wherein a portion of the second upper support a313 is fixed to the second upper end a, and another portion is placed in the second upper through hole a. A portion of the second lower support a314 is fixed to the second lower end a, and another portion is placed in the second lower through hole a. In addition, a second groove for clamping the second sensing antenna 312 is formed on both the second upper support a313 and the second lower support a314.

[0065] Furthermore, a second upper support member b and a second lower support member b315 are provided on the second column b311, wherein a portion of the second upper support member b is fixed to the second upper end b, and another portion is placed in the second upper through hole b. A portion of the second lower support member b315 is fixed to the second lower end b, and another portion is placed in the second lower through hole b. In addition, a second groove for clamping the second sensing antenna 312 is formed on both the second upper support member b and the second lower support member b315.

[0066] By arranging the first upper support member a306, the first lower support member a307, the first upper support member b308, the first lower support member b309, the second upper support member a313, the second lower support member a314, the second upper support member b, and the second lower support member b315, the first sensing antenna 305 and the second sensing antenna 312 are spaced apart from the first column a303, the first column b304, the second column a310, and the second column b311, respectively, to avoid the first sensing antenna 305 from contacting the first column a303 and the first column b304 and affecting the collection of the magnetic field signal, and to avoid the second sensing antenna 312 from contacting the second column a310 and the second column b311 and affecting the collection of the magnetic field signal.

[0067] When the first sensing antenna 305 is placed in the first groove, it is convenient to clamp and position the first sensing antenna 305 on the first column a303 and the first column b304. When the second sensing antenna 312 is placed in the second groove, it is convenient to clamp and position the second sensing antenna 312 on the second column a310 and the second column b311.

[0068] In this embodiment, the circuit board 316 is solidified with a first interface a, a first interface b, a second interface a, a second interface b, a first connecting column a, a first connecting column b, a second connecting column a and a second connecting column b, wherein the first interface a and the first interface b are connected to the first connecting column a and the first connecting column b respectively, and the second interface a and the second interface b are connected to the second connecting column a and the second connecting column b respectively.

[0069] In one embodiment, the first ends of the first connecting pillar a, the first connecting pillar b, the second connecting pillar a and the second connecting pillar b are solidified on the circuit board 316 , and the second ends of the connecting pillars are wiring terminals and face toward the top plate 301 .

[0070] In another embodiment, a plurality of threading holes are opened on the base plate 302, and the first ends of the first connecting column a, the first connecting column b, the second connecting column a and the second connecting column b are solidified on the circuit board 316, and the second end of each connecting column is a wiring terminal, and the second end of each connecting column corresponds to an adjacent threading hole.

[0071] In this embodiment, the first sensing antenna 305 is connected to an external first processor through the first interface a and the first connecting post a, the first interface b and the first connecting post b, and the first transmission line, so as to input the first magnetic field signal obtained by the first sensing antenna 305 into the first processor. The second sensing antenna 312 is connected to an external second processor through the second interface a and the second connecting post a, the second interface b and the second connecting post b, and the second transmission line, so as to input the second magnetic field signal obtained by the second sensing antenna 312 into the second processor.

[0072] Specifically, the first end of the first sensing antenna 305 passes through the first lower through hole a and is placed in the first interface a. The second end of the first sensing antenna 305 extends along the first lower support member a307, the outer wall of the first column a303, the first upper support member a306, the first upper through hole a, the distance between the first column a303 and the first column b304, the first upper support member b308, the first upper through hole b, the outer wall of the first column b304, the first lower support member b309, and the first lower through hole b to the position of the first interface b and is placed in the first interface b. The first end of the second sensing antenna 312 passes through the second lower through hole a and is placed in the second interface a. The second end of the second sensing antenna 312 extends along the second lower support member a314, the outer wall of the second column a310, the second upper support member a313, the second upper through hole a, the distance between the second column a310 and the second column b311, the second upper support member b, the second upper through hole b, the outer wall of the second column b311, the second lower support member b315, and the second lower through hole b to the position of the second interface b and is placed in the second interface b.

[0073] Preferably, the first induction antenna 305 and the second induction antenna 312 are both in a strip structure, and the first induction antenna 305 and the second induction antenna 312 adopt the above method, so that the first induction antenna 305 and the second induction antenna 312 form a ring structure. Compared with the prior art in which the conductive coil is only wound around the first column a303, the first column b304, the second column a310 and the second column b311, the installation method of the first induction antenna 305 and the second induction antenna 312 can be simplified, and the sensitivity of the first induction antenna 305 and the second induction antenna 312 can be adjusted later through the control part and the relevant program, thereby increasing the sensitivity when collecting magnetic field signals.

[0074] In addition, in this embodiment, the first orthogonal induction antenna is an east-west antenna, which mainly senses magnetic field signals in the east-west direction, and the second orthogonal induction antenna is a north-south antenna, which mainly senses magnetic field signals in the north-south direction.

[0075] In addition, in this embodiment, in order to prevent the first sensing antenna 305, the second sensing antenna 312 and the circuit board 316 from being damaged, protective plates are installed at least on the top of the bottom plate 302, the outer wall surface of the first column a303, the outer wall surface of the first column b304, the outer wall surface of the first column a303 and the outer wall surface of the first column b304. The protective plates can be made of conductive materials or materials containing conductive substances, so that the first sensing antenna 305 and the second sensing antenna 312 can still collect the magnetic field signal released outward by the lightning signal simulation device through the protective plates.

[0076] Furthermore, a notch 201 is formed on the electric field antenna 2, and one end of the third transmission line is connected to an external third processor via the notch 201, the outer wall surface of the first column a303 and the area between the protective plate.

[0077] like Figure 3 As shown, the present invention provides an azimuth calibration method for an orthogonal magnetic loop antenna, comprising the following steps:

[0078] S1. After the orthogonal magnetic loop antenna is rotated to the current detection position, the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device, and obtain the current detection position of the orthogonal magnetic loop antenna;

[0079] S2, calling the preset calibration azimuth when the orthogonal magnetic loop antenna is in the current detection position;

[0080] S3, obtaining the current azimuth angle when the magnetic field antenna assembly is at the current detection position;

[0081] S4. Compare the current azimuth with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, adjust the current azimuth to be consistent with the calibrated azimuth.

[0082] Embodiment 1

[0083] like Figure 4 As shown, this embodiment provides an azimuth calibration method for an orthogonal magnetic loop antenna, comprising the following steps:

[0084] S100: After the orthogonal magnetic loop antenna is rotated to the current detection position, the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device, and obtain the current detection position of the orthogonal magnetic loop antenna.

[0085] Specifically, after the orthogonal magnetic loop antenna is placed on the rotatable tray, the orthogonal magnetic loop antenna is located above the dial, and the orthogonal magnetic loop antenna is horizontally rotated to the specified current detection position through the pointer on the tray. At this time, the current detection position can be manually input or automatically input into the external control part through the acquisition device.

[0086] The lightning signal simulation device generates and releases a set magnetic field signal according to the input instruction of the control part. Since the rotating component is fixed inside the lightning signal simulation device, when the lightning signal simulation device releases the set magnetic field signal, the electric field antenna and the magnetic field antenna component collect the magnetic field signal released by the lightning signal simulation device.

[0087] S101, calling a preset calibration azimuth when the orthogonal magnetic loop antenna is in a current detection position.

[0088] Specifically, after receiving the input of the current detection position, the control part calls the preset calibration azimuth angle θ' corresponding to the current detection position stored in the fourth processor according to the current detection position of the orthogonal magnetic loop antenna.

[0089] S102, obtaining a first magnetic field signal value and a second magnetic field signal value.

[0090] Specifically, the magnetic field antenna assembly includes a first orthogonal induction antenna, a second orthogonal induction antenna and a circuit board. The first orthogonal induction antenna is connected to the first processor in the control part through the circuit board and the first transmission line in sequence, and the second orthogonal induction antenna is connected to the second processor in the control part through the circuit board and the second transmission line in sequence.

[0091] After the first processor and the second processor receive the first magnetic field signal and the second magnetic field signal respectively, the fourth processor uses the existing magnetic field signal value calculation algorithm to obtain the first magnetic field signal value E respectively. X and the second magnetic field signal value E Y . Among them, this patent application does not limit the existing magnetic field signal value calculation algorithm.

[0092] S103: Obtain the current azimuth angle when the magnetic field antenna assembly is in the current detection position.

[0093] Specifically, the control part includes a fourth processor, which obtains the first magnetic field signal value E X and the second magnetic field signal value E Y Then, the current azimuth angle θ is obtained using the following formula:

[0094]

[0095] S104: Compare the current azimuth with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, adjust the current azimuth to be consistent with the calibrated azimuth.

[0096] Specifically, if it is determined that the current azimuth angle θ is inconsistent with the calibrated azimuth angle θ`, the current azimuth angle is adjusted to be consistent with the calibrated azimuth angle, including but not limited to the following two situations.

[0097] Case 1:

[0098] S1041, determining whether the current detection position of the orthogonal magnetic loop antenna obtained by the control part and the calibration azimuth angle θ' corresponding to the current detection position are accurate, if so, executing step S1042, if not, adjusting to be accurate;

[0099] S1042, adjusting relevant detection parameters according to the difference between the current azimuth angle θ and the calibration azimuth angle θ' (for example, including but not limited to increasing the sensitivity and accuracy of collecting magnetic field signals of the first sensing antenna and / or the second sensing antenna, etc.);

[0100] S1043, the magnetic field antenna component receives the magnetic field signal again, and after obtaining the current first magnetic field signal value and the current second magnetic field signal value, compares the current first magnetic field signal value with the previous first magnetic field signal value, and the current second magnetic field signal value with the previous second magnetic field signal value; if it is determined that the current first magnetic field signal value and the previous first magnetic field signal value, and the current second magnetic field signal value and the previous second magnetic field signal value are the same, repeat the above steps until it is determined that at least one of the current first magnetic field signal value and the previous first magnetic field signal value, and the current second magnetic field signal value and the previous second magnetic field signal value is different;

[0101] If it is determined that there is a difference between the current first magnetic field signal value and the previous first magnetic field signal value, and between the current second magnetic field signal value and the previous second magnetic field signal value, the current azimuth angle θ is obtained according to the current first magnetic field signal value and the current second magnetic field signal value, and the current azimuth angle θ is compared with the calibrated azimuth angle θ`. If it is determined that the two are different, the above steps are repeated until the current azimuth angle θ is adjusted to be consistent with the calibrated azimuth angle θ`.

[0102] Case 2:

[0103] S1041`, replacing the corresponding first sensing antenna and / or second sensing antenna according to the difference between the current azimuth angle θ and the calibrated azimuth angle θ`;

[0104] S1042`, adjusting the current detection position of the replaced orthogonal magnetic loop antenna to the previous detection position, and after ensuring that the current detection position is the same as the previous detection position, obtaining the current detection position and the corresponding calibration azimuth angle θ`;

[0105] S1043`, determining whether the current detection position of the orthogonal magnetic loop antenna obtained by the control part and the calibration azimuth angle θ` corresponding to the current detection position are accurate, if so, executing step S1042`, if not, adjusting to be accurate;

[0106] S1044`, the magnetic field antenna component receives the magnetic field signal again, and after obtaining the current first magnetic field signal value and the current second magnetic field signal value, compares the current first magnetic field signal value with the previous first magnetic field signal value, and the current second magnetic field signal value with the previous second magnetic field signal value; if it is determined that the current first magnetic field signal value and the previous first magnetic field signal value, and the current second magnetic field signal value and the previous second magnetic field signal value are the same, repeat the above steps until it is determined that at least one of the current first magnetic field signal value and the previous first magnetic field signal value, and the current second magnetic field signal value and the previous second magnetic field signal value is different;

[0107] If it is determined that there is a difference between the current first magnetic field signal value and the previous first magnetic field signal value, and between the current second magnetic field signal value and the previous second magnetic field signal value, the current azimuth angle θ is obtained according to the current first magnetic field signal value and the current second magnetic field signal value, and the current azimuth angle θ is compared with the calibrated azimuth angle θ`. If it is determined that the two are different, the above steps are repeated until the current azimuth angle θ is adjusted to be consistent with the calibrated azimuth angle θ`.

[0108] Embodiment 2

[0109] like Figure 5 As shown, this embodiment provides an azimuth calibration method for an orthogonal magnetic loop antenna, comprising the following steps:

[0110] S200: After the orthogonal magnetic loop antenna is rotated to the current detection position, the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device, and obtain the current detection position of the orthogonal magnetic loop antenna.

[0111] Specifically, after the orthogonal magnetic loop antenna is placed on the rotatable tray, the orthogonal magnetic loop antenna is located above the dial, and the orthogonal magnetic loop antenna is horizontally rotated to the specified current detection position through the pointer on the tray. At this time, the current detection position can be manually input or automatically input into the external control part through the acquisition device.

[0112] The lightning signal simulation device generates and releases a set magnetic field signal according to the input instruction of the control part. Since the rotating component is fixed inside the lightning signal simulation device, when the lightning signal simulation device releases the set magnetic field signal, the electric field antenna and the magnetic field antenna component collect the magnetic field signal released by the lightning signal simulation device.

[0113] S201. Obtain a third magnetic field signal value.

[0114] Specifically, the electric field antenna assembly is connected to the third processor in the control part through the third transmission line. After receiving the third magnetic field signal, the third processor can use the existing magnetic field signal value calculation algorithm to obtain the third magnetic field signal value E Z. Among them, this patent application does not limit the existing magnetic field signal value calculation algorithm.

[0115] S202, calling a preset calibration magnetic field signal value.

[0116] Specifically, after receiving the input current detection position, the control part calls the preset calibration magnetic field signal value E corresponding to the current detection position stored in the fourth processor according to the current detection position of the orthogonal magnetic loop antenna. Z` .

[0117] S203: call the calibration azimuth corresponding to the current detection position pre-stored in the fourth processor.

[0118] Specifically, for the third magnetic field signal value E Z and the calibration magnetic field signal value E Z` Compare, if it is determined that the third magnetic field signal value E Z Greater than the calibration magnetic field signal value E Z` , then call the calibration azimuth θ` corresponding to the current detection position pre-stored in the fourth processor; if it is determined that the third magnetic field signal value E Z Not greater than the calibration magnetic field signal value E Z` , then return to step S200

[0119] S204, obtaining a first magnetic field signal value and a second magnetic field signal value.

[0120] Specifically, the magnetic field antenna assembly includes a first orthogonal induction antenna, a second orthogonal induction antenna and a circuit board. The first orthogonal induction antenna is connected to the first processor in the control part through the circuit board and the first transmission line in sequence, and the second orthogonal induction antenna is connected to the second processor in the control part through the circuit board and the second transmission line in sequence.

[0121] After the first processor and the second processor obtain the first magnetic field signal and the second magnetic field signal respectively, the fourth processor uses the existing magnetic field signal value calculation algorithm to obtain the first magnetic field signal value E respectively. X and the second magnetic field signal value E Y . Among them, this patent application does not limit the existing magnetic field signal value calculation algorithm.

[0122] S205: Obtain the current azimuth angle when the magnetic field antenna assembly is in the current detection position.

[0123] Specifically, the fourth processor obtains the first magnetic field signal value E X and the second magnetic field signal value E Y Then, the current azimuth angle θ is obtained using the following formula:

[0124]

[0125] S206: Compare the current azimuth with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, adjust the current azimuth θ to be consistent with the calibrated azimuth θ`.

[0126] Specifically, if it is determined that the current azimuth angle is inconsistent with the calibrated azimuth angle, the current azimuth angle θ is adjusted to be consistent with the calibrated azimuth angle θ`, including but not limited to the following two situations.

[0127] Among them, the implementation steps of situation one are the same as the implementation steps S1041 to S1043 recorded in embodiment one, and the implementation steps of situation two are the same as the implementation steps S1041` to S1044` recorded in embodiment one.

[0128] The present invention provides a calibration device for implementing Figure 3 The calibration method described in , which comprises:

[0129] Lightning signal simulation equipment generates and releases a set magnetic field signal according to input instructions;

[0130] The rotating component is fixed inside the lightning signal simulation device and rotates the orthogonal magnetic loop antenna to the current detection position;

[0131] The orthogonal magnetic loop antenna is fixed on the rotating assembly, and includes an electric field antenna and a magnetic field antenna assembly. The electric field antenna is fixed on the top end surface of the magnetic field antenna assembly, wherein the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device;

[0132] A processor, configured to obtain at least a first magnetic field signal value, a second magnetic field signal value, a preset calibration azimuth corresponding to a current detection position, and a preset calibration magnetic field signal value;

[0133] Obtaining a current azimuth according to the first magnetic field signal value and the second magnetic field signal value;

[0134] The current azimuth is compared with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth.

[0135] Embodiment 3

[0136] like Figure 6 As shown, this embodiment provides a calibration device for implementing Figure 4 The calibration method described in the invention comprises a lightning signal simulation device 1, a rotating component 4, an orthogonal magnetic loop antenna 5 and a processor.

[0137] In this embodiment, the lightning signal simulation device 1 may adopt, but is not limited to, a Helmholtz coil.

[0138] Preferably, when the lightning signal simulation device 1 uses a Helmholtz coil, it generates and releases a set magnetic field signal to the outside according to an input instruction of the control part.

[0139] In this embodiment, the structure of the orthogonal magnetic loop antenna 5 is the same as the structure of the orthogonal magnetic loop antenna 5 described in the first embodiment.

[0140] In this embodiment, the rotating component 4 includes a rotating mechanism, a dial 403, a tray 404 and a pointer 405, wherein the bottom of the rotating mechanism is fixed on the Helmholtz coil, the dial 403 is fixed on the rotating mechanism, the tray 404 is rotatably connected to the rotating mechanism and is arranged on the dial 403, the pointer 405 is fixed on the tray 404, and its bottom end is adjacent to the dial 403, and the orthogonal magnetic ring antenna 5 is fixed on the tray 404.

[0141] Furthermore, the rotating mechanism includes a bottom fixing member 401, and a rotating shaft assembly 402 mounted on the bottom fixing member 401, a dial 403 is sleeved and fixed on the outside of the rotating shaft assembly 402, a tray 404 is fixed on the top of the rotating shaft assembly 402, and a pointer 405 is fixed on the outer wall surface of the tray 404. Since the diameter of the tray 404 is smaller than the diameter of the dial 403, it is convenient to check the position indicated by the pointer 405, so as to understand the current position of the orthogonal magnetic loop antenna 5.

[0142] In this embodiment, the processor includes a first processor, a second processor and a fourth processor, wherein the first processor receives a first magnetic field signal and obtains a first magnetic field signal value according to the first magnetic field signal.

[0143] The second processor receives the second magnetic field signal and obtains a second magnetic field signal value according to the second magnetic field signal. The fourth processor stores a preset calibration azimuth and a preset calibration magnetic field signal value corresponding to the current detection position, obtains a current azimuth according to the first magnetic field signal value and the second magnetic field signal value, and compares the current azimuth with the calibration azimuth. If it is determined that the current azimuth is inconsistent with the calibration azimuth, the current azimuth is adjusted to be consistent with the calibration azimuth.

[0144] Specifically, after the first processor and the second processor obtain the first magnetic field signal and the second magnetic field signal respectively, they can use the existing magnetic field signal value calculation algorithm to obtain the first magnetic field signal value E respectively. X and the second magnetic field signal value E Y .

[0145] The fourth processor obtains the first magnetic field signal value E X and the second magnetic field signal value E Y Then, the current azimuth angle θ is obtained using the following formula:

[0146]

[0147] Furthermore, after obtaining the current detection position of the orthogonal magnetic ring antenna 5 on the rotating component 4, the fourth processor obtains the corresponding preset calibration azimuth angle θ` according to the current detection position, and compares the current azimuth angle θ with the calibration azimuth angle θ`. If it is determined that the current azimuth angle θ is inconsistent with the calibration azimuth angle θ`, the current azimuth angle θ is adjusted to be consistent with the calibration azimuth angle θ`.

[0148] Exemplarily, if it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth, including but not limited to the following two situations.

[0149] Among them, the implementation steps of situation one are the same as the implementation steps S1041 to S1043 recorded in embodiment one, and the implementation steps of situation two are the same as the implementation steps S1041` to S1044` recorded in embodiment one.

[0150] In this embodiment, a control part is also included. The control part is connected to the lightning signal simulation device 1, and controls the lightning signal simulation device 1 to generate and release a set magnetic field signal according to an input instruction. The processor is placed inside the control part, and the electric field antenna 2 and the magnetic field antenna assembly 3 are respectively connected to the control part through transmission lines, so that the electric field antenna 2 and the magnetic field antenna assembly 3 are connected to the processor. In addition, the current detection position of the orthogonal magnetic ring antenna 5 after rotation can be manually input or automatically input into the control part through an acquisition device.

[0151] In this embodiment, the processor is preferably a circuit board having the first processor, the second processor and the fourth processor solidified thereon.

[0152] Embodiment 5

[0153] This embodiment provides a calibration device for implementing Figure 5 The calibration method described in the above embodiment is different from the calibration device in the above embodiment in that:

[0154] The processor also includes a third processor, which is connected to the electric field antenna assembly through a third transmission line, receives a third magnetic field signal collected by the electric field antenna, and obtains a third magnetic field signal value.

[0155] The fourth processor stores a preset calibration magnetic field signal value corresponding to the current detection position. The third magnetic field signal value is compared with the calibration magnetic field signal value. If it is determined that the third magnetic field signal value is greater than the calibration magnetic field signal value, the current azimuth is compared with the calibration azimuth. If it is determined that the current azimuth is inconsistent with the calibration azimuth, the current azimuth is adjusted to be consistent with the calibration azimuth.

[0156] Further, the third processor receives the third magnetic field signal, and obtains a third magnetic field signal value E according to the third magnetic field signal. Z , and the third magnetic field signal value E Z and the calibration magnetic field signal value E Z` If the third magnetic field signal value E is determined Z Greater than the calibration magnetic field signal value E Z` , then call the calibration azimuth θ` with the current detection position.

[0157] In this embodiment, after the first processor, the second processor and the third processor obtain the first magnetic field signal, the second magnetic field signal and the third magnetic field signal respectively, they can use the existing magnetic field signal value calculation algorithm to obtain the first magnetic field signal value E respectively. X , the second magnetic field signal value E Y and the third magnetic field signal value E Z .

[0158] Further, the fourth processor is based on the first magnetic field signal value E X and the second magnetic field signal value E Y The current azimuth angle θ is obtained, and it is determined whether the current azimuth angle θ is consistent with the calibration azimuth angle θ`. If the current azimuth angle θ is inconsistent with the calibration azimuth angle θ`, the current azimuth angle is adjusted to be consistent with the calibration azimuth angle.

[0159] Exemplarily, if it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth, including but not limited to the following two situations.

[0160] Among them, the implementation steps of situation one are the same as the implementation steps S1041 to S1043 recorded in embodiment one, and the implementation steps of situation two are the same as the implementation steps S1041` to S1044` recorded in embodiment one.

[0161] In this embodiment, the processor is preferably a circuit board having a first processor, a second processor, a third processor and a fourth processor solidified thereon.

[0162] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. An orthogonal magnetic loop antenna for collecting magnetic field signals, comprising a magnetic field antenna assembly and an electric field antenna fixed on the top of the magnetic field antenna assembly, characterized in that: The magnetic field antenna assembly includes a top plate, a bottom plate, a first column group, a second column group, a first induction antenna, a second induction antenna and a circuit board, wherein the first column group and the second column group are both connected to the top plate and the bottom plate, the circuit board is fixed on the top end surface of the bottom plate, the first induction antenna extends along a first path on the first column group and between the top plate and the bottom plate to form a ring structure surrounding the outside of the circuit board and connected to the circuit board, and the second induction antenna extends along a second path on the second column group and between the top plate and the bottom plate to form a ring structure surrounding the outside of the circuit board and connected to the circuit board.

2. The orthogonal magnetic loop antenna according to claim 1, characterized in that: The first sensing antenna is perpendicular to the second sensing antenna, and in an orthographic projection viewing angle, a portion of the first sensing antenna overlaps a portion of the second sensing antenna.

3. The orthogonal magnetic loop antenna according to claim 1, characterized in that: The first column group includes a first column a and a first column b, wherein the first column a and the first column b are opposite to each other and spaced apart, and the first sensing antenna extends along a first path in sequence on the first column a, the spaced area between the first column a and the first column b, and the first column b, and is then connected to two ends of the circuit board; The second column group includes a second column a and a second column b, wherein the second column a and the second column b are opposite to each other and are arranged at intervals, and the second sensing antenna extends along the second path in sequence on the second column a, the interval area between the second column a and the second column b, and the second column b, and is then connected to the two ends of the circuit board.

4. The orthogonal magnetic loop antenna according to claim 3, characterized in that: A gap is formed between the first sensing antenna and the first column a and the first column b; A gap is formed between the second sensing antenna and the second pillar a and the second pillar b.

5. The orthogonal magnetic loop antenna according to claim 4, characterized in that: A first upper support a and a first lower support a are provided on the first column a, a first upper support b and a first lower support b are provided on the first column b, and a part of the first sensing antenna is placed in the first upper support a, the first lower support a, the first upper support b and the first lower support b; A second upper support a and a second lower support a are arranged on the second column a, a second upper support b and a second lower support b are arranged on the second column b, and a part of the second sensing antenna is placed in the second upper support a, the second lower support a, the second upper support b and the second lower support b.

6. The orthogonal magnetic loop antenna according to claim 5, characterized in that: A first groove is formed in the first upper support member a, the first lower support member a, the first upper support member b and the first lower support member b, and a portion of the first sensing antenna is placed in each of the first grooves; Second grooves are formed in the second upper support member a, the second lower support member a, the second upper support member b, and the second lower support member b, and a portion of the second sensing antenna is placed in each of the second grooves.

7. The orthogonal magnetic loop antenna according to claim 1, characterized in that: The circuit board is cured with a first interface a, a first interface b, a second interface a, a second interface b, a first connecting column a, a first connecting column b, a second connecting column a and a second connecting column b, wherein the first interface a and the first interface b are connected to the first connecting column a and the first connecting column b respectively, the second interface a and the second interface b are connected to the second connecting column a and the second connecting column b respectively, the two ends of the first sensing antenna are connected to the first interface a and the first interface b respectively, the two ends of the second sensing antenna are connected to the second interface a and the second interface b respectively, and the first connecting column a and the first connecting column b, as well as the second connecting column a and the second connecting column b are all connected to the processor through a transmission line.

8. The orthogonal magnetic loop antenna according to claim 1, characterized in that: A protective plate is further provided on the outer sides of the first column group, the second column group and the circuit board, wherein the protective plate is made of a conductive material or a material containing a conductive substance.

9. The orthogonal magnetic loop antenna according to claim 1, characterized in that: The electric field antenna is connected to the processor via a transmission line.

10. An azimuth calibration method, used for calibrating the azimuth of the orthogonal magnetic loop antenna according to any one of claims 1 to 9, characterized in that: The following steps are involved: After the orthogonal magnetic loop antenna is rotated to the current detection position, the electric field antenna and the magnetic field antenna assembly collect the magnetic field signal released outward by the lightning signal simulation device, and obtain the current detection position of the orthogonal magnetic loop antenna; Calling the preset calibration azimuth when the orthogonal magnetic loop antenna is in the current detection position; Obtaining the current azimuth angle when the magnetic field antenna assembly is at the current detection position; The current azimuth is compared with the calibrated azimuth. If it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth.

11. A calibration device, characterized in that: The method for implementing the azimuth calibration method according to claim 10 comprises: Lightning signal simulation equipment generates and releases a set magnetic field signal according to input instructions; A rotating component is fixed inside the lightning signal simulation device and rotates the orthogonal magnetic loop antenna to a current detection position; An orthogonal magnetic ring antenna, fixed on the rotating assembly, includes an electric field antenna and a magnetic field antenna assembly, wherein the electric field antenna is fixed on the top end surface of the magnetic field antenna assembly, wherein the electric field antenna and the magnetic field antenna assembly respectively obtain magnetic field signals; A processor, configured to obtain at least a first magnetic field signal value, a second magnetic field signal value, a preset calibration azimuth corresponding to a current detection position, and a preset calibration magnetic field signal value; Obtaining a current azimuth according to the first magnetic field signal value and the second magnetic field signal value; The current azimuth is compared with the calibrated azimuth, and if it is determined that the current azimuth is inconsistent with the calibrated azimuth, the current azimuth is adjusted to be consistent with the calibrated azimuth.

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