A magnetic field induction measurement system, method, control device and storage medium

Abstract

A magnetic field induction measurement system, method, control device and storage medium disclosed by the present invention include: a control module, a light source, a circulator, a magnetic field induction device and a demodulator. The circulator includes a first end, a second end and a third end. The light source is connected to the first end of the circulator, the magnetic field induction device is connected to the second end of the circulator, and the input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit, and the sensing unit includes an electromagnetic sensitive module and an optical fiber provided with optical fiber coding disposed on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module. The electromagnetic energy value measured based on the optical fiber coding technology is not interfered, which can prevent the problem of measurement interference and improve the accuracy of the measurement result.

Description

Technical Field

[0001] The present invention relates to the field of optical fibers, and in particular to a magnetic field induction measurement system, method, control device and storage medium. Background Art

[0002] At present, conventional electromagnetic magnetic field induction uses an electronic radar method for measurement, and this measurement method is easily interfered with, resulting in inaccurate measurement results. Summary of the Invention

[0003] To solve the above problems, an object of the present invention is to provide a magnetic field induction measurement system, method, control device and storage medium, which can prevent the problem of measurement interference and improve the accuracy of measurement results.

[0004] The technical solution adopted by the present invention to solve its problems is as follows:

[0005] In a first aspect, an embodiment of the present invention provides a magnetic field induction measurement system, including: a control module, a light source, a circulator, a magnetic field induction device and a demodulator. The circulator includes a first end, a second end and a third end. The light source is connected to the first end of the circulator, the magnetic field induction device is connected to the second end of the circulator, the input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit, and the sensing unit includes an electromagnetic sensitive module and an optical fiber provided with an optical fiber code disposed on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module.

[0006] At least one of the above technical solutions of the present invention has the following advantages or beneficial effects: An electromagnetic sensitive module is provided on the optical fiber provided with an optical fiber code. When the electromagnetic sensitive module is affected by an electromagnetic field, it will deform. The deformation of the electromagnetic sensitive module will cause the optical fiber code in the optical fiber to deform, resulting in a change in the wavelength of the optical fiber code. The control module can control the light source to turn on and off, send light waves to identify and detect the optical fiber code in the optical fiber, and can obtain the corresponding electromagnetic energy value according to the change value of the optical fiber code detected by the demodulator. The electromagnetic energy value measured based on the optical fiber code technology is not interfered, and the stability of optical fiber transmission can be used to prevent the problem of measurement interference and improve the accuracy of measurement results.

[0007] Further, the magnetic field induction device includes at least two sensing units connected by an optical fiber.

[0008] Further, every two adjacent sensing units are arranged in a U shape.

[0009] Further, the positive projection of the optical fiber code onto the electromagnetic sensitive module falls within the electromagnetic sensitive module.

[0010] Further, the electromagnetic sensitive module is a rare earth alloy plate.

[0011] Further, the rare earth alloy plate is bonded to the optical fiber provided with the optical fiber code.

[0012] Further, the light source is a pulsed broadband light source.

[0013] Further, the optical fiber code includes at least two fiber gratings with different wavelengths.

[0014] Further, the intervals between every two adjacent fiber gratings are the same.

[0015] In a second aspect, an embodiment of the present invention provides a magnetic field induction measurement method, which is applied to a magnetic field induction measurement system. The magnetic field induction measurement system includes: a control module, a light source, a circulator, a magnetic field induction device, and a demodulator. The circulator includes a first end, a second end, and a third end. The light source is connected to the first end of the circulator. The magnetic field induction device is connected to the second end of the circulator. The input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit. The sensing unit includes an electromagnetic sensitive module and an optical fiber provided with an optical fiber code disposed on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module;

[0016] The magnetic field induction measurement method includes the following steps:

[0017] The control module controls the light source to output light waves;

[0018] The control module controls the demodulator to detect the reflected light of the light waves reflected back by the optical fiber code in the magnetic field induction device, and obtains the current wavelength value of the fiber grating in the optical fiber code;

[0019] The control module obtains a wavelength change value according to the current wavelength value and the initial wavelength value;

[0020] The control module obtains a corresponding electromagnetic energy value according to the wavelength change value.

[0021] At least one of the above technical solutions of the present invention has the following advantages or beneficial effects: An electromagnetic sensitive module is arranged on the optical fiber provided with an optical fiber code. When the electromagnetic sensitive module is affected by an electromagnetic field, it will deform. The deformation of the electromagnetic sensitive module will cause the optical fiber code in the optical fiber to deform, thereby causing a change in the wavelength of the optical fiber code. The control module can control the turning on and off of the light source, send light waves to the optical fiber code in the optical fiber, and can control the demodulator to detect the reflected light reflected from the optical fiber code, obtain the current wavelength value of the fiber grating in the optical fiber code, obtain the wavelength change value based on the current wavelength value and the initial wavelength value, and then obtain the corresponding electromagnetic energy value based on the wavelength change value. The stability of optical fiber transmission can prevent measurement interference problems and improve the accuracy of the measurement result of the electromagnetic energy value.

[0022] Further, the magnetic field induction device includes at least two of the sensing units connected by optical fibers. Each two connected sensing units are arranged in a U shape, and all the optical fiber codes in at least two of the sensing units are arranged in a matrix;

[0023] After the control module obtains the corresponding electromagnetic energy value according to the energy change value, the following steps are further included:

[0024] The control module forms an electromagnetic energy value matrix array based on the electromagnetic energy values corresponding to the wavelength change values of the fiber gratings in each optical fiber code according to the position correspondence information of the optical fiber code on the magnetic field induction device, and obtains an electromagnetic field distribution graph and an electromagnetic energy change graph.

[0025] In a third aspect, an embodiment of the present invention provides a measurement control device, including: a memory, a control processor, and a computer program stored on the memory and executable on the control processor. When the control processor executes the computer program, it implements the magnetic field induction measurement method as described in the second aspect.

[0026] At least one of the above technical solutions of the present invention has the following advantages or beneficial effects: The measurement control device can control the control module to control the turning on and off of the light source, send light waves to the optical fiber code in the optical fiber, can control the control module to control the turning on and off of the light source, send light waves to the optical fiber code in the optical fiber, can control the demodulator to detect the reflected light reflected from the optical fiber code, obtain the current wavelength value of the fiber grating in the optical fiber code, obtain the wavelength change value based on the current wavelength value and the initial wavelength value, and then obtain the corresponding electromagnetic energy value based on the wavelength change value. The stability of optical fiber transmission can prevent measurement interference problems and improve the accuracy of the measurement result of the electromagnetic energy value.

[0027] Fourthly, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to execute the magnetic field induction measurement method as described in the second aspect.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the drawings and examples.

[0030] Figure 1 is a schematic diagram of a magnetic field induction measurement system according to an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of an optical fiber of a magnetic field induction measurement system according to an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of optical fiber coding of a magnetic field induction measurement system according to an embodiment of the present invention;

[0033] Figure 4 is a flowchart of a magnetic field induction measurement method according to an embodiment of the present invention;

[0034] Figure 5 is a flowchart of a magnetic field induction measurement method according to another embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of a measurement control device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0037] It should be noted that although functional module division is performed in the system schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order from the module division in the system or the order in the flowchart. Terms such as "first" and "second" in the description, claims and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0038] The present invention provides a magnetic field induction measurement system, method, control device and storage medium, including: a control module, a light source, a circulator, a magnetic field induction device and a demodulator. The circulator includes a first end, a second end and a third end. The light source is connected to the first end of the circulator, the magnetic field induction device is connected to the second end of the circulator, and the input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit, and the sensing unit includes an electromagnetic sensitive module and an optical fiber provided with an optical fiber code on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module. An electromagnetic sensitive module is arranged on the optical fiber provided with the optical fiber code. When the electromagnetic sensitive module is affected by an electromagnetic field, it will deform. The deformation of the electromagnetic sensitive module will cause the optical fiber code in the optical fiber to deform, thereby causing a change in the wavelength of the optical fiber code. The control module can control the light source to turn on and off, send light waves to identify and detect the optical fiber code in the optical fiber, and can obtain the corresponding electromagnetic energy value according to the wavelength change value of the optical fiber code detected by the demodulator. The electromagnetic energy value measured based on the optical fiber coding technology can be free from interference, and the problem of measurement interference can be prevented, thereby improving the accuracy of the measurement result.

[0039] Referring to Figure 1-3 , an embodiment of the present invention provides a magnetic field induction measurement system, including: a control module 110, a light source 120, a circulator 130, a magnetic field induction device 140 and a demodulator 150. The circulator 130 includes a first end, a second end and a third end. The light source 120 is connected to the first end of the circulator 130, the magnetic field induction device 140 is connected to the second end of the circulator 130, and the input end of the demodulator 150 is connected to the third end of the circulator 130. The magnetic field induction device 140 includes at least one sensing unit 310, and the sensing unit 310 includes an electromagnetic sensitive module 141 and an optical fiber 142 provided with an optical fiber code 210 on the electromagnetic sensitive module 141. The demodulator 150 and the light source 120 are respectively connected to the control module 110.

[0040] An electromagnetic sensitive module 141 is arranged on the optical fiber 142 provided with the optical fiber code 210. When the electromagnetic sensitive module 141 is affected by an electromagnetic field, it will deform. The deformation of the electromagnetic sensitive module 141 will cause the optical fiber code 210 in the optical fiber to deform, thereby causing a change in the wavelength of the optical fiber code 210. The control module 110 can control the light source 120 to turn on and off, send light waves to detect the reflected wave reflected by the optical fiber code 210 in the optical fiber, obtain the current wavelength value of the optical fiber code 210, and can obtain the wavelength change value according to the current wavelength value and the initial wavelength value. The corresponding electromagnetic energy value can be obtained according to the wavelength change value of the optical fiber code 210 detected by the demodulator 150. The electromagnetic energy value measured based on the optical fiber coding technology can be free from interference, and the problem of measurement interference can be prevented, thereby improving the accuracy of the measurement result.

[0041] It should be noted that the light source 120 is a pulsed broadband light source 120. The pulsed broadband light source 120 can provide a stable light wave output for a magnetic field induction measurement system, and the wavelength range of the light wave can be determined according to the number of fiber gratings 210 required. In the existing fiber grating processing technology, there is a wavelength error in the fiber grating. Then, the calculation formula for the wavelength range of the light wave can be: Where F n is the wavelength range of the light wave, F r is the wavelength error of the fiber grating, F l is the 3dB bandwidth, and n is the number of fiber gratings 210. The light source 120 can also be other lasers, and this implementation is not the only limitation.

[0042] It should be noted that the first end, the second end, and the third end of the circulator 130 in this embodiment are arranged in sequence and the one-way passing directions of the three ports are the same. Since the overall structure involves multiple optical components, the loss in the optical fiber should be minimized to ensure the accuracy of the measurement.

[0043] It should be noted that the fiber grating 210 is a fiber reflection grating, and the light wave output by the light source 120 can be reflected by the fiber grating 210 and detected in the demodulator 150.

[0044] Refer to Figure 3, the magnetic field induction device 140 includes at least two sensing units 310 connected by optical fibers, and every two adjacent sensing units 310 are arranged in a U shape. The magnetic field induction device 140 may include multiple sensing units 310, and each sensing unit 310 is connected by an optical fiber. Then, the shape of the magnetic field induction device 140 formed by connecting multiple sensing units 310 may be an S shape. The optical fiber 142 provided with the optical fiber code 210 in each sensing unit 310 is bonded onto the electromagnetic sensitive module 141. Every two adjacent sensing units 310 are arranged in a U shape. Multiple sensing units 310 can enable the optical fiber codes 210 to be arranged to form a multi-element matrix, such as forming a 10*10 optical fiber code 210 matrix. When the electromagnetic sensitive module 141 is affected by electromagnetic waves, strain will be generated, and the strain can affect the optical fiber. The deformation of the optical fiber affects the wavelength of the optical fiber code 210 and causes a change. The control module 110 can analyze the data detected by the demodulator 150 to obtain the wavelength combination of each optical fiber code 210, realize the identification of the position of each optical fiber code 210 in the magnetic field induction device 140, calculate the electromagnetic energy value corresponding to the wavelength change of the optical fiber code 210 according to the wavelength change values of the fiber gratings in the optical fiber code 210, and then correspond the optical fiber code 210 to the matrix position on the device, so as to form an electromagnetic energy matrix array for each point on the matrix, thereby completing the electromagnetic field distribution pattern and energy strength. Combined with the transmitter, the distance between the object generating the electromagnetic field and the magnetic field induction device 140 can be calculated, which can prevent the problem of measurement interference and improve the accuracy of the measurement result.

[0045] In one embodiment, the material of the electromagnetic sensitive module 141 may be rare earth. The rare earth can be made into a rare earth alloy plate, and the rare earth alloy plate is bonded to the optical fiber 142 provided with the optical fiber code 210. When the rare earth alloy plate is affected by electromagnetic waves, strain will be generated, affecting the deformation of the optical fiber, thereby affecting the wavelength change of the optical fiber code 210 in the optical fiber. The control module 110 can analyze the data detected by the demodulator 150 to obtain the wavelength combination of each optical fiber code 210, realize the identification of the position of each optical fiber code 210 in the magnetic field induction device 140, calculate the electromagnetic energy value corresponding to the wavelength change of the optical fiber code 210 according to the wavelength change values of the fiber gratings in the optical fiber code 210, and then correspond the optical fiber code 210 to the matrix position on the device, forming an electromagnetic energy matrix array for each point on the matrix, thereby completing the electromagnetic field distribution pattern and energy strength, which can prevent the problem of measurement interference and improve the accuracy of the measurement result. It should be noted that the material of the electromagnetic sensitive module 141 may also be other materials, and this embodiment is not limited to one.

[0046] In one embodiment, the optical fiber code 210 includes fiber Bragg gratings of at least two different wavelengths, and the intervals between every two adjacent fiber Bragg gratings are the same. Then, the generated optical fiber code 210 can be a group of different-wavelength fiber reflection codes. However, the fiber Bragg grating structure of the optical fiber code 210 is not uniquely limited in this embodiment. For example, the intervals of the fiber Bragg gratings in the optical fiber code 210 can be unequal.

[0047] Referring to Figure 4 , based on the magnetic field induction measurement method of the magnetic field induction measurement system in the above embodiment, the method includes the following steps:

[0048] S410, controlling the light source to output light waves;

[0049] S420, controlling the demodulator to detect the reflected light reflected back by the optical fiber code in the magnetic field induction device through the light waves, and obtaining the current wavelength value of the fiber Bragg grating in the optical fiber code;

[0050] S430, obtaining the wavelength change value according to the current wavelength value and the initial wavelength value;

[0051] S440, obtaining the corresponding electromagnetic energy value according to the wavelength change value.

[0052] An electromagnetic sensitive module is arranged on the optical fiber provided with the optical fiber code. When the electromagnetic sensitive module is affected by the electromagnetic field, it will deform. The deformation of the electromagnetic sensitive module will cause the optical fiber code in the optical fiber to deform, thereby causing a change in the wavelength of the optical fiber code. It is possible to control the control module to control the turning on and off of the light source, send light waves to the optical fiber code in the optical fiber, control the demodulator to detect the reflected light reflected back from the optical fiber code, obtain the current wavelength value of the optical fiber code, obtain the wavelength change value according to the current wavelength value and the initial wavelength value, and then obtain the corresponding electromagnetic energy value according to the wavelength change value. The stability of optical fiber transmission can prevent measurement interference problems and improve the accuracy of the measurement result of the electromagnetic energy value.

[0053] Referring to Figure 5 , after the step of obtaining the corresponding electromagnetic energy value according to the energy change value in the above embodiment of the magnetic field induction measurement method, the following steps are further included:

[0054] S510, the control module forms an electromagnetic energy value matrix array according to the position corresponding information of the optical fiber code on the magnetic field induction device, and obtains the electromagnetic field distribution graph and the electromagnetic energy change graph from the wavelength change value of the fiber Bragg grating in each optical fiber code.

[0055] By arranging the electromagnetic energy values corresponding to the wavelength change values of the optical fiber coding in a matrix, the electromagnetic field distribution pattern and the electromagnetic energy change pattern can be obtained. In combination with the transmitter, the distance between the object generating the electromagnetic field and the magnetic field induction device can be calculated. The problem of measurement interference can be prevented by the electromagnetic energy values measured based on the optical fiber coding technology, and the accuracy of the measurement results can be improved.

[0056] Refer to Figure 6 , Figure 6 FIG. 6 is a schematic diagram of a measurement control device 600 provided by an embodiment of the present invention. The measurement control device 600 of the embodiment of the present invention is built into the magnetic field induction measurement system and includes one or more control processors 610 and a memory 620. Figure 6 In FIG. 6, one control processor 610 and one memory 620 are taken as examples.

[0057] The control processor 610 and the memory 620 can be connected through a bus or other means. Figure 6 In FIG. 6, the connection through a bus is taken as an example.

[0058] The memory 620, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 620 can include high-speed random access memory and can also include non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 620 optionally includes a memory 620 remotely set relative to the control processor 610, and these remote memories 620 can be connected to the measurement control device 600 through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0059] Those skilled in the art can understand that Figure 6 the device structure shown in FIG. 6 does not limit the measurement control device 600, and it may include more or fewer components than shown, or combine some components, or have different component arrangements.

[0060] The non-transitory software programs and instructions required to implement the magnetic field induction measurement method applied to the measurement control device 600 in the above embodiments are stored in the memory 620. When executed by the control processor 610, the magnetic field induction measurement method applied to the measurement control device 600 in the above embodiments is executed. For example, the method steps S410 to step S440 described above Figure 4 in FIG. 6, Figure 5 and the method step S510 in FIG. 6 are executed.

[0061] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0062] In addition, an embodiment of the present invention also provides a computer-readable storage medium, which stores computer-executable instructions. The computer-executable instructions are executed by one or more control processors, for example, Figure 6 executed by one of the control processors 610 in Figure 4 so that the above one or more control processors 610 can execute the magnetic field induction measurement method in the above method embodiment, for example, execute the method steps S410 to S440 described above in Figure 5 and the method step S510 in

[0063] Those of ordinary skill in the art can understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically includes computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0064] The above are only the preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as it achieves the technical effects of the present invention by the same means, it should fall within the protection scope of the present invention.

Claims

1. A magnetic field induction measurement system, characterized in that, it includes: a control module, a light source, a circulator, a magnetic field induction device and a demodulator. The circulator includes a first end, a second end and a third end. The light source is connected to the first end of the circulator. The magnetic field induction device is connected to the second end of the circulator. The input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit. The sensing unit includes an electromagnetic sensitive module and an optical fiber provided with an optical fiber code disposed on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module; wherein, the control module is used to control the light source to output light waves; control the demodulator to detect the reflected light of the light waves reflected back by the optical fiber code in the magnetic field induction device to obtain the current wavelength value of the fiber grating in the optical fiber code; obtain the wavelength change value according to the current wavelength value and the initial wavelength value; obtain the corresponding electromagnetic energy value according to the wavelength change value; according to the position corresponding information of the optical fiber code on the magnetic field induction device, form an electromagnetic energy value matrix array of the electromagnetic energy values corresponding to the wavelength change values of the fiber gratings in each optical fiber code to obtain an electromagnetic field distribution pattern and an electromagnetic energy change pattern, and calculate the distance between the object generating the electromagnetic field and the magnetic field induction device in combination with the transmitter; Among them, the calculation formula for the wavelength range of the optical wave is: , is the wavelength range of the optical wave, is the wavelength error of the fiber grating, is the 3dB bandwidth, and n is the number of fiber encodings.

2. The magnetic field induction measurement system according to claim 1, characterized in that, the magnetic field induction device includes at least two of the sensing units connected by optical fibers.

3. The magnetic field induction measurement system according to claim 2, characterized in that, every two adjacent sensing units are arranged in a U shape.

4. The magnetic field induction measurement system according to claim 1, characterized in that, the orthographic projection of the optical fiber code onto the electromagnetic sensitive module falls within the electromagnetic sensitive module.

5. The magnetic field induction measurement system according to claim 1, characterized in that, the electromagnetic sensitive module is a rare earth alloy plate.

6. The magnetic field induction measurement system according to claim 5, characterized in that, the rare earth alloy plate is bonded to the optical fiber provided with the optical fiber code.

7. A magnetic field induction measurement method, characterized in that, it is applied to a magnetic field induction measurement system. The magnetic field induction measurement system includes: a control module, a light source, a circulator, a magnetic field induction device and a demodulator. The circulator includes a first end, a second end and a third end. The light source is connected to the first end of the circulator. The magnetic field induction device is connected to the second end of the circulator. The input end of the demodulator is connected to the third end of the circulator. The magnetic field induction device includes at least one sensing unit. The sensing unit includes an electromagnetic sensitive module and an optical fiber provided with an optical fiber code disposed on the electromagnetic sensitive module. The demodulator and the light source are respectively connected to the control module; the magnetic field induction measurement method includes the following steps: the control module controls the light source to output light waves; The control module controls the demodulator to detect the reflected light reflected back by the optical wave through the optical fiber encoding in the magnetic field induction device, and obtains the current wavelength value of the fiber grating in the optical fiber encoding; The control module obtains the wavelength change value according to the current wavelength value and the initial wavelength value; The control module obtains the corresponding electromagnetic energy value according to the wavelength change value; Wherein, the magnetic field induction device includes at least two of the sensing units connected by optical fibers, each two connected sensing units are arranged in a U shape, and all the optical fiber encodings in at least two of the sensing units are arranged in a matrix; After the control module obtains the corresponding electromagnetic energy value according to the energy change value, the following steps are further included: The control module forms an electromagnetic energy value matrix array of the electromagnetic energy values corresponding to the wavelength change values of the fiber gratings in each of the optical fiber encodings according to the position corresponding information of the optical fiber encodings on the magnetic field induction device, obtains the electromagnetic field distribution pattern and the electromagnetic energy change pattern, and calculates the distance between the object generating the electromagnetic field and the magnetic field induction device in combination with the transmitter; Among them, the calculation formula for the wavelength range of the light wave is: , is the wavelength range of the light wave, is the wavelength error of the fiber grating, is the 3dB bandwidth, and n is the number of fiber encodings.

8. Measurement control device, Comprising: A memory, a control processor, and a computer program stored on the memory and executable on the control processor, wherein the control processor implements the magnetic field induction measurement method according to claim 7 when executing the computer program.

9. Computer-readable storage medium, Characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to execute the magnetic field induction measurement method according to claim 7.

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