A laser-based monitoring system for vibration displacement of tower bolts

Abstract

This invention relates to a laser-based system for monitoring the vibration displacement of tower bolts, belonging to the field of power transmission line monitoring technology. It includes: a laser signal acquisition unit, a first processing unit, and a second processing unit. The laser signal acquisition unit acquires laser signals from the monitored tower bolt components. The first processing unit performs amplification, filtering, phase control, and demodulation on the acquired laser signals to obtain a demodulated laser signal. The second processing unit calculates the vibration displacement of each component of the tower bolts based on the demodulated laser signal. Based on the vibration displacement of each component, it determines the displacement of the bolt structure and tower connector structure, as well as the fault vibration displacement, identifying faulty or non-faulty vibration displacements, and generates a report. This invention improves the accuracy of tower bolt vibration displacement monitoring; avoids misjudgments of tower bolt vibration displacement caused by environmental factors, and greatly improves the safe and stable operation of the power system.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line monitoring, in particular to a laser-based system for monitoring the vibration displacement of a tower bolt. Background Art

[0002] At present, the structural vibration displacement of transmission line towers is monitored by laser. Most of them use the vibration displacement of the tower nuts to determine whether the tower has vibrated or not. However, this monitoring method of the vibration displacement of the tower nuts is easily affected by environmental factors, resulting in low accuracy in monitoring the vibration displacement of the tower nuts, which can cause misjudgment in the vibration displacement monitoring of the power tower bolts, posing a hidden danger to the safe and stable operation of the power system. Summary of the invention

[0003] In view of the above analysis, the present invention aims to provide a system for monitoring the vibration displacement of tower bolts based on laser, which realizes filtering and demodulating the laser signal of the tower bolts based on the phase control signal. The processor unit performs analog-to-digital conversion and calculation on the filtered and demodulated laser signal of the tower bolts to obtain the vibration displacement of the tower bolts, thereby greatly improving the monitoring accuracy of the vibration displacement of the tower bolts.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] The invention discloses a system for monitoring the vibration displacement of a tower bolt based on laser, comprising: a laser signal acquisition unit, a first processing unit and a second processing unit;

[0006] The laser signal acquisition unit is used to collect laser signals of bolt components of the monitored tower; the bolt components of the tower include a bolt structure and a tower connector structure, and the corresponding laser signals include laser signals of various components of the bolt structure and laser signals of various components of the tower connector structure;

[0007] The first processing unit is used to perform amplification, filtering, phase control, filtering and demodulation on the collected laser signal to obtain a demodulated laser signal;

[0008] The second processing unit is used to calculate the vibration displacement of each component of the tower bolt according to the demodulated laser signal; determine the displacement of the bolt structure and the tower connecting member structure according to the vibration displacement of each component of the tower bolt, and determine the fault vibration displacement to determine the fault or non-fault vibration displacement; and generate a report.

[0009] Further, the laser signal acquisition unit acquires the tower bolt laser signals based on the time series, including the bolt structure laser signals and the tower connection component structure laser signals;

[0010] The bolt laser signal includes a nut laser signal, a nut laser signal and a screw laser signal; the pole tower connection component laser signal includes at least one pole tower connection component laser signal.

[0011] Further, the first processing unit includes: an amplifying and filtering subunit, a phase control subunit and a filtering and oscillating subunit;

[0012] The amplifying and filtering subunit is used to perform signal amplification and filtering processing on the collected laser signal to obtain an amplified and filtered signal;

[0013] The phase control subunit is used to generate a phase control signal according to the phase difference between the amplified filtered signal and the feedback signal generated by the filter oscillator subunit, and output the phase control signal to the filter oscillator subunit;

[0014] The filter oscillator unit is used to perform filtering and demodulation according to the phase control signal to obtain the phase of the feedback signal, and return it to the phase control subunit for closed-loop control to eliminate the phase difference. After the phase difference between the amplified filter signal and the feedback signal is eliminated, the feedback signal is output as the displacement laser voltage signal corresponding to the collected laser signal.

[0015] Further, the filter oscillator unit includes a filter module and a voltage-controlled oscillator module;

[0016] The filter module is connected between the phase control subunit and the voltage controlled oscillation module, and is used to filter the phase control signal output by the phase control subunit to obtain a filtered voltage. ;

[0017] The voltage controlled oscillator module is used to generate a phase-controlled filtered voltage Control voltage signal The voltage Return to the Phase Control subunit.

[0018] Further, the filtering module includes a resistor R1, a resistor R2, a capacitor C1 and an operational amplifier U1;

[0019] One end of the resistor R1 is used as the positive input end of the filter module, and the inverting input end of the operational amplifier U1 is used as the negative input end to connect the positive and negative output ends of the phase control subunit to the phase control signal; the other end of the resistor R1 is connected to one end of the resistor R2 and the in-phase input end of the operational amplifier U1, respectively, the other end of the resistor R2 is connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the output end of the operational amplifier U1; the output end of the operational amplifier U1 and the inverting input end of the operational amplifier U1 are used as the positive and negative output ends of the filter module to connect to the positive and negative input ends of the voltage-controlled oscillation module, and the output filter voltage To the voltage controlled oscillator module.

[0020] Furthermore, the demodulated displacement laser voltage signal The displacement relationship with the tower bolt assembly can be expressed by the following formula:

[0021] ;

[0022] in, is the displacement laser voltage, is the displacement of the tower bolt, is the gain coefficient of the filter module, R is the equivalent resistance of the filter module, is the equivalent capacitance of the filter module, is the laser wavelength.

[0023] Furthermore, the second processing unit includes: a component displacement calculation module, a first displacement determination module, a second displacement determination module, a fault vibration displacement type determination module and a report generation module; wherein,

[0024] The component displacement calculation module is used to perform analog-to-digital conversion calculation and proportional processing on the displacement laser voltage signals of each component of the bolt structure and the tower connection structure to obtain the vibration displacement of each component;

[0025] A first displacement determination module is used to determine whether the bolt structure has been displaced according to the vibration displacement of each component of the bolt structure;

[0026] A fault vibration displacement type determination module is used to determine the fault vibration displacement type when there is displacement of the bolt structure and / or displacement of the pole tower connection structure;

[0027] The report generation module is used to generate corresponding risk reports based on the types of bolt structure displacement, tower connection structure displacement and fault vibration displacement.

[0028] Furthermore, in the first displacement determination module, if the vibration displacement of the nut, the vibration displacement of the nut, and the vibration displacement of the screw rod are greater than or equal to the displacement threshold of the bolt structure, it is determined that the bolt structure has been displaced; otherwise, it is determined that the bolt structure has not been displaced;

[0029] In the second displacement determination module, if the displacement of each component of the tower connection structure including the displacement of the first tower connection and the displacement of the second tower connection is greater than or equal to the bolt structure displacement threshold, it is determined that the tower connection structure has been displaced; otherwise, it is determined that the tower connection structure has not been displaced.

[0030] Furthermore, in the determination process of the fault vibration displacement type determination module,

[0031] When there is displacement of the bolt structure or the pole tower connection structure, it is determined to be a fault vibration displacement type;

[0032] When there is displacement of the bolt structure and displacement of the pole tower connection structure, the vibration displacement type is determined based on the external environment impact threshold; wherein the external environment impact threshold includes the refractive index impact threshold and the wind impact threshold, and the vibration displacement type includes the fault vibration displacement type and the non-fault vibration displacement type;

[0033] When the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is less than the refractive index influence threshold and the wind force characteristic value is less than the wind force influence threshold, it is determined to be a fault vibration displacement type;

[0034] When the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is greater than or equal to the refractive index influence threshold and the wind force characteristic value is greater than or equal to the wind force influence threshold, it is determined to be a non-fault vibration displacement type.

[0035] Furthermore, the refractive index characteristic value is determined based on the air temperature and humidity signal and the ambient atmospheric pressure signal; and the wind force characteristic value is determined based on the wind speed signal.

[0036] The beneficial effects of the present invention are as follows:

[0037] The present invention realizes filtering and demodulating the tower bolt laser signal based on the phase control signal, and the processor unit performs analog-to-digital conversion and calculation processing on the tower bolt laser signal after filtering and demodulating to obtain the tower bolt vibration displacement.

[0038] The present invention realizes vibration displacement type determination processing in combination with external environment influence threshold value, determines whether the vibration displacement type belongs to fault vibration type or non-fault vibration type, thereby avoiding misjudgment of vibration displacement of tower bolts due to environmental factors, and greatly improves the safe and stable operation of the power system.

[0039] The present invention realizes that a phase control unit generates a phase control signal based on the phase of the output signal of the amplifying filter unit and a phase feedback signal, and the filtering oscillation unit performs filtering and demodulation processing on the tower bolt laser signal based on the phase control signal to obtain the tower bolt displacement laser voltage signal and transmit it to the processor unit, and the processor unit performs analog-to-digital conversion and calculation processing on the tower bolt displacement laser voltage signal to obtain the tower bolt vibration displacement, thereby greatly improving the monitoring accuracy of the tower bolt vibration displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0041] Figure 1It is a structural schematic diagram of a system for monitoring the vibration displacement of a tower bolt based on laser according to an embodiment of the present invention;

[0042] Figure 2 FIG. 4 is a circuit diagram of a filter module in a filter oscillation unit structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used to illustrate the principles of the present invention together with the embodiments of the present invention.

[0044] The embodiment of the present invention provides a system for monitoring the vibration displacement of a tower bolt based on laser. Figure 1 As shown, it includes: a laser signal acquisition unit, a first processing unit and a second processing unit;

[0045] The laser signal acquisition unit is used to collect laser signals of bolt components of the monitored tower; the bolt components of the tower include a bolt structure and a tower connector structure, and the corresponding laser signals include laser signals of various components of the bolt structure and laser signals of various components of the tower connector structure;

[0046] The first processing unit is used to perform amplification, filtering, phase control, filtering and demodulation on the collected laser signal to obtain a demodulated laser signal;

[0047] The second processing unit is used to calculate the vibration displacement of each component of the tower bolt according to the demodulated laser signal; determine the displacement of the bolt structure and the tower connecting part structure according to the vibration displacement of each component of the tower bolt, and determine the fault vibration displacement to determine the fault or non-fault vibration displacement; and generate a report.

[0048] Specifically, the laser signal collected by the laser signal collection unit is a tower bolt laser signal generated by laser irradiation of a tower bolt component composed of a fixedly connected bolt and a tower connector;

[0049] The laser signal acquisition unit acquires the tower bolt laser signal based on the time series, including the bolt structure laser signal and the tower connection structure laser signal;

[0050] The bolt structure includes a nut, a nut and a screw assembly, and the pole tower connector structure includes at least one pole tower connector assembly; accordingly, the bolt laser signal includes a nut laser signal, a nut laser signal and a screw laser signal; the pole tower connector laser signal includes at least one pole tower connector laser signal; generally, if the pole tower bolt assembly includes several pole tower connectors, several pole tower connector laser signals will be collected.

[0051] For example, when the pole tower bolt includes two pole tower connectors, the pole tower connector laser signal includes a first pole tower connector laser signal and a second pole tower connector laser signal.

[0052] Specifically, the first processing unit includes: an amplifying and filtering subunit, a phase control subunit and a filtering and oscillating subunit;

[0053] The amplifying and filtering subunit is used to perform signal amplification and filtering processing on the collected laser signal to obtain an amplified and filtered signal;

[0054] The phase control subunit is used to generate a phase control signal according to the phase difference between the amplified filtered signal and the feedback signal generated by the filter oscillator subunit, and output the phase control signal to the filter oscillator subunit;

[0055] The filter oscillator unit is used to perform filtering and demodulation according to the phase control signal to obtain the phase of the feedback signal, and return it to the phase control subunit for closed-loop control to eliminate the phase difference. After the phase difference between the amplified filter signal and the feedback signal is eliminated, the feedback signal is output as the displacement laser voltage signal corresponding to the collected laser signal.

[0056] More specifically, the structure of the amplifying and filtering subunit can be set according to the actual situation, and is not specifically limited in this embodiment. Any structure that can amplify and filter the collected tower bolt laser signal can be applied to this embodiment.

[0057] More specifically, the phase control subunit may adopt a phase control method including a phase detector to convert the phase difference into a voltage signal.

[0058] More specifically, the filter oscillator unit includes a filter module and a voltage-controlled oscillator module;

[0059] The filter module is connected between the phase control subunit and the voltage controlled oscillation module, and is used to filter the phase control signal output by the phase control subunit to obtain a filtered voltage. ;

[0060] The voltage controlled oscillator module is used to generate a phase-controlled filtered voltage Control voltage signal The voltage Return to the phase control subunit;

[0061] The phase control subunit detects, amplifies, and filters the signal and voltage The phase difference between them is used to generate a phase control signal based on the phase difference. After being filtered by the filter module, it is sent to the voltage-controlled oscillation module to change the voltage The phase of the amplified filtered signal is adjusted by repeated closed-loop control until the voltage After the phase deviation is reduced to the point where it is eliminated, the signal is demodulated; the voltage at which the signal is demodulated is The laser voltage signal corresponding to the collected laser signal is output as a displacement laser voltage signal.

[0062] like Figure 2 As shown, the filtering module includes a resistor R1, a resistor R2, a capacitor C1 and an operational amplifier U1;

[0063] One end of the resistor R1 is used as the positive input end of the filter module, and the inverting input end of the operational amplifier U1 is used as the negative input end to connect the positive and negative output ends of the phase control subunit to the phase control signal; the other end of the resistor R1 is connected to one end of the resistor R2 and the in-phase input end of the operational amplifier U1, respectively, the other end of the resistor R2 is connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the output end of the operational amplifier U1; the output end of the operational amplifier U1 and the inverting input end of the operational amplifier U1 are used as the positive and negative output ends of the filter module to connect to the positive and negative input ends of the voltage-controlled oscillation module, and the output filter voltage To the voltage controlled oscillator module.

[0064] More specifically, the voltage-controlled oscillator module may use a voltage-controlled oscillator device or circuit that meets the frequency range of the tower bolt laser signal. This embodiment does not make specific restrictions, and any voltage-controlled oscillator device or circuit that can meet the frequency range of the tower bolt laser signal can be applied to this embodiment.

[0065] In adopting Figure 2 The filter module shown in the figure completes the demodulation of the displacement laser voltage signal The displacement relationship with the tower bolt assembly can be expressed by the following formula:

[0066] ;

[0067] in, is the displacement laser voltage, is the displacement of the tower bolt, is the gain coefficient of the filter module, R is the equivalent resistance of the filter module, is the equivalent capacitance of the filter module, is the laser wavelength.

[0068] In a specific scheme of the present embodiment, the first processing unit includes an amplifying and filtering subunit, a phase control subunit and a filtering and oscillating subunit corresponding to the laser signals of each component of the bolt structure and the pole tower connecting member structure; the laser signal of each component is processed respectively to obtain the displacement laser voltage signal of each component.

[0069] In another specific scheme in the present embodiment, the first processing unit includes an amplifying and filtering subunit, a phase control subunit and a filtering oscillator subunit; the collected laser signals of each component of the bolt structure and the pole tower connecting structure are processed in time-sharing, and the laser signals of different components are processed in different time periods to obtain the displacement laser voltage signals of each component.

[0070] Specifically, the second processing unit includes: a component displacement calculation module, a first displacement determination module, a second displacement determination module, a fault vibration displacement type determination module and a report generation module; wherein,

[0071] The component displacement calculation module is used to perform analog-to-digital conversion calculation and proportional processing on the displacement laser voltage signals of each component of the bolt structure and the pole tower connector structure to obtain the vibration displacement of each component.

[0072] The displacement laser voltage signal includes the displacement laser voltage signal of the tower connection and the displacement laser voltage signal of the bolt structure;

[0073] The bolt structure displacement laser signal includes a nut displacement laser voltage signal, a nut displacement laser voltage signal and a screw displacement laser voltage signal, and the nut vibration displacement, the nut vibration displacement and the screw vibration displacement are calculated accordingly.

[0074] The pole tower connector displacement laser voltage signal includes the displacement laser voltage signals of each pole tower connector, and the vibration displacement of each pole tower connector is calculated accordingly; for example, the pole tower connector laser signal includes the first pole tower connector laser signal and the second pole tower connector laser signal, and the vibration displacement of the first pole tower connector and the second pole tower connector is calculated accordingly.

[0075] A first displacement determination module is used to determine whether the bolt structure has been displaced according to the vibration displacement of each component of the bolt structure;

[0076] If the vibration displacement of the nut, the vibration displacement of the nut and the vibration displacement of the screw are greater than or equal to the displacement threshold of the bolt structure, it is determined that the bolt structure has been displaced; otherwise, it is determined that the bolt structure has not been displaced;

[0077] The second displacement determination module is used to determine whether the pole tower connection member structure has been displaced according to the vibration displacement of each component of the pole tower connection member structure;

[0078] If the displacement of each component of the tower connector structure, including the displacement of the first tower connector and the displacement of the second tower connector, is greater than or equal to the bolt structure displacement threshold, it is determined that the tower connector structure has been displaced; otherwise, it is determined that the tower connector structure has not been displaced.

[0079] The fault vibration displacement type determination module is used to determine the fault vibration displacement type when there is displacement of the bolt structure and / or displacement of the pole tower connection structure; wherein,

[0080] When there is displacement of the bolt structure or the pole tower connection structure, it is determined to be a fault vibration displacement type;

[0081] When there is displacement of the bolt structure and displacement of the pole tower connection structure, the vibration displacement type is determined based on the external environment impact threshold; wherein the external environment impact threshold includes the refractive index impact threshold and the wind impact threshold, and the vibration displacement type includes the fault vibration displacement type and the non-fault vibration displacement type;

[0082] Specifically, when the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is less than the refractive index influence threshold and the wind force characteristic value is less than the wind force influence threshold, it is determined to be a fault vibration displacement type;

[0083] When the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is greater than or equal to the refractive index influence threshold and the wind force characteristic value is greater than or equal to the wind force influence threshold, it is determined to be a non-fault vibration displacement type.

[0084] The report generation module is used to generate corresponding risk reports based on the types of bolt structure displacement, tower connection structure displacement and fault vibration displacement.

[0085] It should be noted that the external environment impact threshold includes a refractive index impact threshold and a wind force impact threshold. The refractive index characteristic value can be determined based on the air temperature and humidity signal and the ambient atmospheric pressure signal, and the wind force characteristic value can be determined based on the wind speed signal.

[0086] In the embodiment of the present invention, the specific determination method of the refractive index characteristic value and the wind force characteristic value is not limited. Multiple refractive index impact thresholds and wind force impact thresholds can be set according to actual usage conditions to make different fault vibration degree determinations and generate risk reports. It is achieved that the vibration displacement type determination and risk report generation are made by setting the refractive index impact threshold and the wind force impact threshold.

[0087] The terms "first", "second" and "third" etc. in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0088] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0090] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A laser-based monitoring system for vibration displacement of tower bolts, characterized in that: include: A laser signal acquisition unit, a first processing unit and a second processing unit; The laser signal acquisition unit is used to collect laser signals of bolt components of the monitored tower; the bolt components of the tower include a bolt structure and a tower connector structure, and the corresponding laser signals include laser signals of various components of the bolt structure and laser signals of various components of the tower connector structure; The first processing unit is used to perform amplification, filtering, phase control, filtering and demodulation on the collected laser signal to obtain a demodulated laser signal; The second processing unit is used to calculate the vibration displacement of each component of the tower bolt according to the demodulated laser signal; determine the displacement of the bolt structure and the tower connection structure according to the vibration displacement of each component of the tower bolt, and determine the fault vibration displacement to determine the fault or non-fault vibration displacement; and generate reports; The first processing unit includes: an amplifying and filtering subunit, a phase control subunit and a filtering and oscillating subunit; The amplifying and filtering subunit is used to perform signal amplification and filtering processing on the collected laser signal to obtain an amplified and filtered signal; The phase control subunit is used to generate a phase control signal according to the phase difference between the amplified filtered signal and the feedback signal generated by the filter oscillator subunit, and output the phase control signal to the filter oscillator subunit; The filter oscillator unit is used to perform filtering and demodulation according to the phase control signal to obtain the phase of the feedback signal, and return it to the phase control subunit for closed-loop control to eliminate the phase difference. After eliminating the phase difference between the amplified filter signal and the feedback signal, the feedback signal is output as the displacement laser voltage signal corresponding to the collected laser signal; The filter oscillator unit includes a filter module and a voltage-controlled oscillator module; The filter module is connected between the phase control subunit and the voltage controlled oscillation module, and is used to filter the phase control signal output by the phase control subunit to obtain a filtered voltage. ; The voltage controlled oscillator module is used to generate a phase-controlled filtered voltage Control voltage signal The voltage signal Return to the phase control subunit; Demodulated displacement laser voltage signal The displacement relationship with the tower bolt assembly is expressed as follows: ； in, is the displacement laser voltage, is the displacement of the tower bolt, is the gain coefficient of the filter module, R is the equivalent resistance of the filter module, is the equivalent capacitance of the filter module, is the laser wavelength.

2. The laser-based monitoring tower bolt vibration displacement system according to claim 1 is characterized in that: The laser signal acquisition unit acquires the tower bolt laser signal based on the time series, including the bolt structure laser signal and the tower connection structure laser signal; The bolt laser signal includes a nut laser signal, a nut laser signal and a screw laser signal; the pole tower connection component laser signal includes at least one pole tower connection component laser signal.

3. The laser-based monitoring tower bolt vibration displacement system according to claim 1 is characterized in that: The filtering module includes a resistor R1, a resistor R2, a capacitor C1 and an operational amplifier U1; One end of the resistor R1 is used as the positive input end of the filter module, and the inverting input end of the operational amplifier U1 is used as the negative input end to connect the positive and negative output ends of the phase control subunit to the phase control signal; the other end of the resistor R1 is connected to one end of the resistor R2 and the in-phase input end of the operational amplifier U1, respectively, the other end of the resistor R2 is connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the output end of the operational amplifier U1; the output end of the operational amplifier U1 and the inverting input end of the operational amplifier U1 are used as the positive and negative output ends of the filter module to connect to the positive and negative input ends of the voltage-controlled oscillation module, and the output filter voltage To the voltage controlled oscillator module.

4. The laser-based monitoring tower bolt vibration displacement system according to claim 1 is characterized in that: The second processing unit includes: a component displacement calculation module, a first displacement determination module, a second displacement determination module, a fault vibration displacement type determination module and a report generation module; wherein, The component displacement calculation module is used to perform analog-to-digital conversion calculation and proportional processing on the displacement laser voltage signals of each component of the bolt structure and the tower connection structure to obtain the vibration displacement of each component; A first displacement determination module is used to determine whether the bolt structure has been displaced according to the vibration displacement of each component of the bolt structure; A fault vibration displacement type determination module is used to determine the fault vibration displacement type when there is displacement of the bolt structure and / or displacement of the pole tower connection structure; The report generation module is used to generate corresponding risk reports based on the types of bolt structure displacement, tower connection structure displacement and fault vibration displacement.

5. The laser-based monitoring tower bolt vibration displacement system according to claim 4 is characterized in that: In the first displacement determination module, if the vibration displacement of the nut, the vibration displacement of the nut, and the vibration displacement of the screw are greater than or equal to the displacement threshold of the bolt structure, it is determined that the bolt structure has been displaced; otherwise, it is determined that the bolt structure has not been displaced; In the second displacement determination module, if the displacement of each component of the tower connector structure, including the displacement of the first tower connector and the displacement of the second tower connector, is greater than or equal to the displacement threshold of the tower connector structure, it is determined that the tower connector structure has been displaced; otherwise, it is determined that the tower connector structure has not been displaced.

6. The laser-based monitoring tower bolt vibration displacement system according to claim 4 is characterized in that: During the determination process of the fault vibration displacement type determination module, When there is displacement of the bolt structure or the pole tower connection structure, it is determined to be a fault vibration displacement type; When there is displacement of the bolt structure and displacement of the pole tower connection structure, the vibration displacement type is determined based on the external environment impact threshold; wherein the external environment impact threshold includes the refractive index impact threshold and the wind impact threshold, and the vibration displacement type includes the fault vibration displacement type and the non-fault vibration displacement type; When the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is less than the refractive index influence threshold and the wind force characteristic value is less than the wind force influence threshold, it is determined to be a fault vibration displacement type; When the bolt structure is displaced and the pole tower connection structure is displaced and there is vibration, if the refractive index characteristic value is greater than or equal to the refractive index influence threshold and the wind force characteristic value is greater than or equal to the wind force influence threshold, it is determined to be a non-fault vibration displacement type.

7. The laser-based monitoring tower bolt vibration displacement system according to claim 6 is characterized in that: The refractive index characteristic value is determined based on the air temperature and humidity signal and the ambient atmospheric pressure signal; and the wind force characteristic value is determined based on the wind speed signal.

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