A platform vibration monitoring system and monitoring method based on offshore engineering

Abstract

The present invention discloses a platform vibration monitoring system based on offshore engineering and a monitoring method thereof. The monitoring system includes a base station control cabinet and various monitoring subsystems; the monitoring subsystem includes an embracing installation mechanism, a posture adjustment mechanism and a unit monitoring box. The monitoring method steps include grading the seismic capacity, collecting acceleration data, temperature data and seismic observation data, preprocessing the data, calculating the platform vibration data and obtaining data classification results, grading and sending corresponding platform maintenance instructions, and initializing and restoring the posture of the unit monitoring box. The platform vibration monitoring system and the monitoring method thereof can realize multi-point vibration monitoring based on offshore engineering, ensure the reliability and comprehensiveness of vibration monitoring, and provide guarantee for the safety and reliability of offshore engineering; it can also autonomously adjust the posture of the unit monitoring box without the need for maintenance personnel to regularly rush to the site for adjustment and confirmation.

Description

Technical Field

[0001] The invention relates to a vibration monitoring system and a monitoring method thereof, in particular to a platform vibration monitoring system and a monitoring method thereof based on offshore engineering. Background Art

[0002] Offshore projects are generally built on the seabed near the coast to provide an implementation platform for offshore resource development. Platform vibration monitoring of offshore projects is the basis for ensuring the engineering safety and operational reliability of offshore projects, and can ensure the long-term safe and reliable operation of offshore projects. The existing platform vibration monitoring method of offshore projects is to demarcate a certain range on the operating platform close to the main support column to install the corresponding monitoring equipment, but this monitoring method not only occupies the space of the operating platform itself, but also often requires some construction operations to be carried out on the operating platform, which will produce more and more direct artificial vibration effects, causing more interference to the monitoring data. In addition, the existing monitoring equipment needs to be regularly maintained on site by monitoring personnel. Since the monitoring equipment is set on the platform of the offshore project, each maintenance is more troublesome. Therefore, it is necessary to design a platform vibration monitoring system and a monitoring method based on offshore projects, which can realize unattended monitoring of platform vibration of offshore projects and ensure the engineering safety and operational reliability of offshore projects. Summary of the invention

[0003] The purpose of the invention is to provide a platform vibration monitoring system and a monitoring method based on offshore engineering, which can realize unattended monitoring of platform vibration of offshore engineering and ensure the engineering safety and operational reliability of offshore engineering.

[0004] Technical solution: The platform vibration monitoring system based on offshore engineering described in the present invention includes a base station control cabinet and various monitoring subsystems; the monitoring subsystem includes an embracing installation mechanism, a posture adjustment mechanism and a unit monitoring box; the embracing installation mechanism of each monitoring unit is detachably installed on the main column at each monitoring point; the posture adjustment mechanism is fixed on the embracing installation mechanism, and the unit monitoring box is installed on the posture adjustment mechanism, the embracing installation mechanism stably supports the posture adjustment mechanism, and the posture adjustment mechanism adjusts the posture of the unit monitoring box; a unit control box, a broadband seismometer, an accelerometer, a temperature sensor ... An adjustment unit and a north-pointing reset mechanism; a slave controller, a slave memory and a slave wireless communication module are arranged in the unit control box; the wide-band seismometer and the accelerometer are both located on the north-pointing reset mechanism, and the north-pointing reset mechanism resets and adjusts the north axis of the wide-band seismometer and the accelerometer; the slave controller is wirelessly connected to the base station control cabinet through the slave wireless communication module; the wide-band seismometer, accelerometer, temperature sensor, temperature adjustment unit, slave memory and slave wireless communication module are all electrically connected to the slave controller, and the temperature adjustment unit adjusts and controls the temperature in the unit monitoring box; the north-pointing reset mechanism and the posture adjustment mechanism are both controlled by the slave controller.

[0005] As a further definition of the platform vibration monitoring system, the north-pointing reset mechanism includes a platform disc, a north-finder, a U-shaped bracket, an angle alignment unit, a platform adjustment unit, a rotation adjustment unit and a centering adjustment unit; a support platform is provided on the lower inner side of the unit monitoring box, and an equipment compartment is provided below the support platform; the platform disc is rotatably installed at the center of the support platform; the U-shaped bracket is vertically fixedly installed on the upper side of the platform disc, and the north-finder is fixedly installed in the middle of the top crossbeam of the U-shaped bracket; the accelerometer is embedded and installed at the center of the upper side of the platform disc, and the broadband seismometer is placed on the upper side of the platform disc. on the upper side of the disk; the angle alignment unit is installed on the U-shaped bracket and the broadband seismometer, and is used for performing north alignment detection on the broadband seismometer; the platform adjustment unit is located in the equipment compartment, and is used for rotationally adjusting the platform disc; the centering adjustment unit is installed on the platform disc, and is used for centering the circumferential outer wall of the broadband seismometer; the rotation adjustment unit is installed on the centering adjustment unit, and is used for rotationally adjusting the centrally clamped broadband seismometer; the north finder is electrically connected to the slave controller; the angle alignment unit, the platform adjustment unit, the rotation adjustment unit and the centering adjustment unit are all controlled by the slave controller.

[0006] As a further definition of the platform vibration monitoring system, the centering adjustment unit includes a synchronous drive component and four centering adjustment components; the synchronous drive component includes a clamping drive motor and a U-shaped hanger; the centering adjustment component includes a drive tube shaft, an L-shaped drive rod, a rotating sleeve and a flexible sleeve; the drive tube shafts of the four centering adjustment components are vertically penetrated and rotatably installed on the platform disc and are located at four equally divided points on the same circle; one end of the L-shaped drive rod is fixed on the upper end of the drive tube shaft, and the rotating sleeve is rotatably installed on the L-shaped drive rod on the vertical rod; the flexible sleeve is sleeved on the outer wall of the rotating sleeve and is used to be pressed onto the circumferential outer wall of the broadband seismometer; the U-shaped hanger is vertically fixed on the lower side of the platform disc, the clamping drive motor is fixed on the middle of the crossbeam of the U-shaped hanger, and driven gears are fixedly arranged on the lower ends of the four rotating sleeves, and a driving gear meshing with the four driven gears is arranged on the end of the output shaft of the clamping drive motor, which is used to synchronously drive the four drive tube shafts to rotate; the slave controller drives and controls the clamping drive motor through the clamping drive circuit.

[0007] As a further definition of the platform vibration monitoring system, the angle alignment unit includes a laser lamp, a light sensor, a light guide column, a U-shaped light guide tube and two pull-and-lock components; the laser lamp and the light guide column are both vertically through-type detachably mounted on the U-shaped bracket, and a light guide hole is vertically arranged at the center of the light guide column; the light sensor is installed on the upper end of the light guide column and faces the upper end opening of the light guide hole; an annular light-absorbing gasket is arranged on the lower end of the light guide column; the U-shaped light guide tube is pull-type detachably mounted on the top of the broadband seismometer through two pull-and-lock components , and the openings of the vertical tubes at both ends of the U-shaped light guide tube face upward, and the center of the horizontal tube deviates from the top center of the broadband seismometer; a reflective lens is arranged at two bends in the U-shaped light guide tube, which is used to shoot the laser light into the center of the opening of one vertical tube, and shoot it out from the center of the opening of the other vertical tube into the light guide hole of the light guide column, and then collected by the light sensor; a light-absorbing coating is arranged on the inner wall of the U-shaped light guide tube; the slave controller controls the power supply of the laser light through the third electric switch; the light sensor is electrically connected to the slave controller.

[0008] As a further limiting scheme of the platform vibration monitoring system, the embracing installation mechanism includes a first arc-shaped bent plate, a second arc-shaped bent plate and tension bolts. Both ends of the first arc-shaped bent plate and the second arc-shaped bent plate are provided with tension support plates. The two opposite tension support plates are tensioned and fixed by tension bolts to achieve the clamping of the first arc-shaped bent plate and the second arc-shaped bent plate on the main column; extended support plates that fit the outer wall of the main column are extended in the middle of the length edges on both sides of the second arc-shaped bent plate; the posture adjustment mechanism includes a rolling A driving motor, a pitch driving motor, an inclination sensor, a cantilever support rod, a roll driving screw, a pitch driving screw, a pitch driving shaft and two suspended strip side panels; the inclination sensor is installed on the supporting platform and is electrically connected to the slave controller; a cylindrical support is provided in the middle of the second arc-shaped bending plate, and a roll supporting shaft is rotatably installed on the cylindrical support; a first side seat is provided on the cylindrical support, and a second side seat is provided on the roll supporting shaft; a first side short shaft is rotatably installed on the first side seat, and a first side short shaft is rotatably installed on the second side seat A second side short shaft is rotatably installed on the upper part; one end of the roll drive screw is rotatably installed on the first side short shaft, and the other end is screwed on the second side short shaft in a through-threaded manner; the roll drive motor is installed on the first side short shaft for rotationally driving the roll drive screw; one end of the cantilever support rod is coaxially fixed on the roll support shaft, and an end support short shaft is rotatably installed on the other end of the cantilever support rod; the lower parts of the two suspended strip side panels are respectively vertically fixed on the front and rear sides of the unit monitoring box, and the front of the pitch drive shaft is fixed to the front of the unit monitoring box. The rear two ends are rotatably mounted on the upper ends of the two suspended strip side panels respectively; a side panel support shaft parallel to the pitch drive axis is installed between the middle parts of the two suspended strip side panels, and the middle part of the side panel support shaft is rotatably mounted on the cantilever support rod; one end of the pitch drive screw is rotatably mounted on the pitch drive shaft, and the other end is screwed on the supporting short shaft with a through thread; the pitch drive motor is installed on the pitch drive shaft for rotationally driving the pitch drive screw; the roll drive motor and the pitch drive motor are both driven and controlled by the slave controller.

[0009] The present invention also provides a monitoring method for a platform vibration monitoring system based on offshore engineering, comprising the following steps:

[0010] Step 1: Classify the seismic resistance of each platform equipment of the offshore project into first-level seismic resistance equipment, second-level seismic resistance equipment and third-level seismic resistance equipment according to the seismic resistance strength;

[0011] Step 2, the unit control box of each monitoring unit wirelessly sends the collected acceleration data, temperature data and seismic observation data to the main controller of the base station control cabinet;

[0012] Step 3, the main controller pre-processes the acceleration data, temperature data, real-time environmental data and seismic observation data received from each monitoring unit to obtain accurate acceleration data and seismic observation data;

[0013] Step 4: The main controller calculates the platform vibration data based on the accurate acceleration data and seismic observation data, and then classifies the data according to the size of the platform vibration data to obtain data classification results, which include first-level emergency data, second-level emergency data, and third-level emergency data;

[0014] Step 5: The main controller sends the data classification results in a graded manner according to the set sending priority and issues corresponding platform maintenance instructions, the platform maintenance instructions including the first-level earthquake-resistant equipment maintenance instructions, the second-level earthquake-resistant equipment maintenance instructions and / or the third-level earthquake-resistant equipment maintenance instructions;

[0015] Step 6: According to the set self-check cycle and the classification results of each monitoring unit, the main controller sends corresponding posture adjustment instructions to each monitoring unit, and the posture adjustment mechanism initializes and restores the posture of the unit monitoring box.

[0016] As a further limitation of the monitoring method of the present invention, in step 3, the specific steps of pretreatment are:

[0017] Step 3.1: The main controller collects real-time environmental data and then uses the environmental data impact algorithm to calculate the environmental impact value of the real-time environmental data:

[0018] First, obtain real-time environmental data at the offshore engineering location, including wind direction data and wind force data;

[0019] Then, according to the set filtering value time range, the wind direction data and wind force data within the corresponding time range are obtained from the real-time environmental data, and then the wind direction data and wind force data within the time range are average filtered to obtain the wind direction data and wind force data at the current moment;

[0020] Finally, the wind direction data and wind force data at the current moment are input into the environmental factor vibration impact model for calculation to obtain the environmental impact value at the current moment;

[0021] Step 3.2, performing temperature drift calibration on the received acceleration data and seismic observation data according to the temperature data to eliminate the influence of temperature on the acceleration data and seismic observation data;

[0022] Step 3.3, use the environmental impact value to perform impact elimination calculation on the acceleration data and seismic observation data after temperature drift calibration to obtain accurate acceleration data and seismic observation data.

[0023] As a further limitation of the monitoring method of the present invention, in step 3.1, the environmental factor vibration impact model is constructed based on historical monitoring data, and the specific steps are:

[0024] First, historical monitoring data is obtained, including historical data of wind direction, historical data of wind force, historical data of acceleration, historical data of earthquake observation, and historical data of actual earthquakes;

[0025] Then, the various time intervals where no earthquakes occurred are determined based on the actual earthquake historical data, and then the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data in the corresponding time intervals are selected from the historical monitoring data as reference historical data;

[0026] Then, according to the time information in each reference historical data, the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data are aligned with the collection time, and the historical data are grouped according to the set time grouping interval in the order of collection time, and the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data in the same time grouping interval are taken as a group of historical data to be confirmed;

[0027] Then, the acceleration historical data and the seismic observation historical data in each group of historical data to be confirmed are analyzed: if one or more component historical data among the three component historical data of the acceleration historical data in a group of historical data to be confirmed is greater than the corresponding acceleration component threshold, then the group of historical data to be confirmed is used as the historical data to be calculated; if one or more component historical data among the three component historical data of the seismic observation historical data in a group of historical data to be confirmed is greater than the corresponding seismic component threshold, then the group of historical data to be confirmed is used as the historical data to be calculated;

[0028] Then, the acceleration historical data, wind force historical data and wind direction historical data at each acquisition time in each group of historical data to be calculated are used to calculate the three-component conversion coefficients of each group of acceleration. The calculation formulas are: , where S NS , S EW and S UD It is the three-component historical data of the acceleration historical data at the current acquisition time. h 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, h 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, h 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, FThe wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction;

[0029] Then for each h 1. h 2 and h 3 The conversion coefficients of the three components of acceleration affecting the model are obtained by averaging them respectively: H 1. H 2 and H 3. Then establish the acceleration influence model as: , where Δ S NSi , Δ S EWi and Δ S UDi is the impact value of the three components of acceleration at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction;

[0030] Then, the three-component conversion coefficients of each group of acceleration are calculated by using the historical data of earthquake observation, wind force and wind direction at each acquisition time in each group of historical data to be calculated. The calculation formulas are: , where Z NS , Z EW and Z UD is the three-component historical data of the earthquake observation historical data at the current acquisition time, y 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, y 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, y 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, F The wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction;

[0031] Then for each y 1. y 2 and y 3 The average conversion coefficients of the three components of the earthquake affecting the model are Y 1. Y 2 and Y 3. Then establish the earthquake observation impact model as follows: , where Δ ZNSi , Δ Z EWi and Δ Z UDi is the impact value of the three components of the earthquake at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction;

[0032] Finally, the acceleration impact model and the earthquake observation impact model are jointly used as the environmental factor vibration impact model, and the three-component impact values ​​of acceleration and the three-component impact values ​​of earthquake are jointly used as the environmental impact values.

[0033] As a further limitation of the monitoring method of the present invention, in step 4, the specific steps of calculating the platform vibration data by the main controller according to the accurate acceleration data and seismic observation data are as follows:

[0034] Step 4.1: Match the acceleration data with the timeline of the earthquake observation data to obtain the three-component waveform data of the acceleration data at the corresponding time. S UDi , S EWi and S NSi And the three-component waveform data of seismic observation data Z UDi , Z EWi and Z NSi , three-component waveform data S UDi , S EWi , S NSi , Z UDi , Z EWi as well as Z NSi All include the time and amplitude of data collection;

[0035] Step 4.2, using the constructed vibration data combined with the algorithm to calculate the three-component waveform data of the platform vibration data at the corresponding time, which are: , where G UDi , G EWi and G NSiare the three-component waveform data of the platform vibration data, a1 and b1 are the fusion weights of the acceleration data and the seismic observation data under small amplitude vibration, and a1+b1=1, a1>b1, a2 and b2 are the fusion weights of the acceleration data and the seismic observation data under large amplitude vibration, and a2+b2=1, a2<b2, K1, K2 and K3 are the data switching thresholds of the three components.

[0036] As a further limitation of the monitoring method of the present invention, in step 5, the main controller sends the data classification results in a hierarchical manner according to the set sending priority and issues the corresponding platform maintenance instructions in the following specific steps:

[0037] Step 5.1, obtaining the communication rate of each data transmission channel when sending data recently and the amount of data to be sent in each to-be-sent sequence, the data transmission channel includes at least one wired data transmission channel and at least one wireless data transmission channel, the to-be-sent sequence is composed of a priority transmission subqueue, a secondary transmission subqueue and a sequential transmission subqueue in sequence, and the priority transmission subqueue is located at the head of the to-be-sent sequence, when sending data, the data transmission channel gives priority to sending the data in the priority transmission subqueue, and sends the data in the secondary transmission subqueue after there is no data in the priority transmission subqueue, and sends the data in the sequential transmission subqueue after there is no data in the secondary transmission subqueue;

[0038] Step 5.2, select the optimal data transmission channel for data transmission according to the transmission priority:

[0039] If the data obtained by classification is first-level emergency data, the total time for completing the sending of all the first-level emergency data in the priority sending subqueue of the to-be-sent sequence of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the first-level emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the first-level emergency data to be sent currently, and then the first-level emergency data to be sent currently is arranged after each first-level emergency data already in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel; if there is no first-level emergency data in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel, then the first-level emergency data to be sent currently is arranged at the front end of the priority sending subqueue of the to-be-sent sequence; and then the first-level emergency data to be sent is arranged at the tail of the sequential sending subqueue of the to-be-sent sequence of other data sending channels except the selected data sending channel;

[0040] If the data obtained by classification is secondary emergency data, the total time for completing the sending of all the secondary emergency data in the secondary sending subqueue of the sequence to be sent of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the secondary emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the secondary emergency data to be sent currently, and then the secondary emergency data to be sent currently is arranged after the secondary emergency data already existing in the secondary sending subqueue of the sequence to be sent of the selected data sending channel; if there is no secondary emergency data in the secondary sending subqueue of the sequence to be sent of the selected data sending channel, then the secondary emergency data to be sent currently is arranged at the front end of the secondary sending subqueue of the sequence to be sent; and then the secondary emergency data to be sent is arranged at the tail of the sequential sending subqueue of the sequence to be sent of other data sending channels except the selected data sending channel;

[0041] If the data is classified as level 3 emergency data, the level 3 emergency data to be sent is arranged at the end of the sequential sending subqueue of the to-be-sent sequence of each data sending channel;

[0042] Step 5.3, issue corresponding platform maintenance instructions based on the data classification results:

[0043] If the data classification is obtained as first-level emergency data, a first-level earthquake-resistant equipment maintenance instruction, a second-level earthquake-resistant equipment maintenance instruction, and a third-level earthquake-resistant equipment maintenance instruction are sent according to the preset communication method;

[0044] If the data classification is level 2 emergency data, a level 2 earthquake resistance equipment maintenance instruction and a level 3 earthquake resistance equipment maintenance instruction are sent according to the preset communication method;

[0045] If the data classification is obtained as level 3 emergency data, a level 3 earthquake-resistant equipment maintenance instruction is sent according to the preset communication method.

[0046] Compared with the prior art, the present invention has the following beneficial effects: using various monitoring subsystems, multi-point vibration monitoring based on offshore engineering can be realized, ensuring the reliability and comprehensiveness of vibration monitoring, thereby providing guarantee for realizing engineering safety and operational reliability of offshore engineering; using the posture adjustment mechanism, the posture of the unit monitoring box can be adjusted, so that after long-term monitoring or after a large vibration occurs, the posture of the unit monitoring box can be adjusted autonomously, without the need for maintenance personnel to rush to the site regularly for adjustment confirmation, thereby ensuring that each monitoring subsystem can realize unattended reliable long-term operation; the cooperation of the temperature sensor and the temperature adjustment unit can realize temperature feedback control in the unit monitoring box, ensuring that the wide-band seismometer and accelerometer work within the set temperature range, thereby enhancing the accuracy and reliability of the monitoring data; using the north-pointing reset mechanism, the north-pointing axis of the wide-band seismometer and accelerometer can be reset and adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the system installation structure of the present invention;

[0048] Figure 2 It is a structural schematic diagram of the posture adjustment mechanism of the present invention;

[0049] Figure 3 This is a schematic diagram of the internal structure of the unit monitoring box of the present invention;

[0050] Figure 4 This is a schematic diagram of the installation structure of the centering adjustment unit of the present invention;

[0051] Figure 5 This is a schematic diagram of the structure of a base station control cabinet of the present invention;

[0052] Figure 6 It is a schematic diagram of the cross-sectional structure of the U-shaped light guide tube of the present invention;

[0053] Figure 7 It is a schematic diagram of the circuit structure of the present invention. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments. Example

[0055] like Figure 1-7As shown, the platform vibration monitoring system based on offshore engineering disclosed in the present invention includes: a base station control cabinet 69 and various monitoring subsystems; the monitoring subsystem includes an embracing installation mechanism, a posture adjustment mechanism and a unit monitoring box 1; the embracing installation mechanism of each monitoring unit is detachably installed on the main column 72 at each monitoring point; the posture adjustment mechanism is fixed on the embracing installation mechanism, and the unit monitoring box 1 is installed on the posture adjustment mechanism, the embracing installation mechanism stably supports the posture adjustment mechanism, and the posture adjustment mechanism adjusts the posture of the unit monitoring box 1; a unit control box 64, a broadband seismometer 63, an accelerometer 42, a temperature sensor 66, and a temperature adjustment mechanism are arranged in the unit monitoring box 1. Unit and north-pointing reset mechanism; a slave controller, a slave memory and a slave wireless communication module are arranged in the unit control box 64; the wide-band seismometer 63 and the accelerometer 42 are both located on the north-pointing reset mechanism, and the north-pointing reset mechanism resets and adjusts the north axis of the wide-band seismometer 63 and the accelerometer 42; the slave controller is wirelessly connected to the base station control cabinet 69 through the slave wireless communication module; the wide-band seismometer 63, the accelerometer 42, the temperature sensor 66, the temperature adjustment unit, the slave memory and the slave wireless communication module are all electrically connected to the slave controller, and the temperature in the unit monitoring box 1 is adjusted and controlled by the temperature adjustment unit; the north-pointing reset mechanism and the posture adjustment mechanism are both controlled by the slave controller.

[0056] The equipment platform can be installed on the main column 72 by using the embracing installation mechanism, thereby reducing human interference and enhancing monitoring accuracy; the various monitoring subsystems can be used to realize multi-point vibration monitoring based on offshore engineering, ensuring the reliability and comprehensiveness of vibration monitoring, thereby providing protection for the engineering safety and operational reliability of offshore engineering; the posture adjustment mechanism can be used to adjust the posture of the unit monitoring box 1, so that after long-term monitoring or after a large vibration, the unit monitoring box 1 can be adjusted autonomously without the need for maintenance personnel to rush to the site regularly to make adjustments and confirmations, thereby ensuring that each monitoring subsystem can achieve unattended, reliable and long-term operation; the cooperation of the temperature sensor 66 and the temperature adjustment unit can realize temperature feedback control in the unit monitoring box 1, ensuring that the wide-band seismometer 63 and the accelerometer 42 work within the set temperature range, thereby enhancing the accuracy and reliability of the monitoring data; the north-pointing reset mechanism can be used to reset and adjust the north-pointing axis of the wide-band seismometer 63 and the accelerometer 42.

[0057] Furthermore, the north-pointing reset mechanism of the platform vibration monitoring system includes a platform disc 30, a north-finder 51, a U-shaped bracket 44, an angle alignment unit, a platform adjustment unit, a rotation adjustment unit and a centering adjustment unit; a support platform 28 is provided on the lower inner side of the unit monitoring box 1, and an equipment compartment 29 is provided below the support platform 28; the platform disc 30 is rotatably mounted at the center of the support platform 28; the U-shaped bracket 44 is vertically fixedly mounted on the upper side of the platform disc 30, and the north-finder 51 is fixedly mounted in the middle of the top crossbeam of the U-shaped bracket 44; the accelerometer 42 is embedded and installed at the center of the upper side of the platform disc 30, and the broadband seismometer 63 is placed On the upper side of the platform disc 30; the angle alignment unit is installed on the U-shaped bracket 44 and the broadband seismometer 63, and is used to perform north alignment detection on the broadband seismometer 63; the platform adjustment unit is located in the equipment compartment 29, and is used to rotationally adjust the platform disc 30; the centering adjustment unit is installed on the platform disc 30, and is used to center the circumferential outer wall of the broadband seismometer 63; the rotation adjustment unit is installed on the centering adjustment unit, and is used to rotationally adjust the centrally clamped broadband seismometer 63; the north finder 51 is electrically connected to the slave controller; the angle alignment unit, the platform adjustment unit, the rotation adjustment unit and the centering adjustment unit are all controlled by the slave controller.

[0058] The angle alignment unit can be used to perform north pointing detection on the wide-band seismometer 63, thereby achieving precise north pointing adjustment of the wide-band seismometer 63; the platform adjustment unit can be used to rotationally adjust the platform disc 30, thereby adjusting the orientation of the U-shaped bracket 44 itself according to the measurement of the north finder 51, ensuring that the wide-band seismometer 63 is in a north pointing state when the angle alignment unit is aligned; the centering adjustment unit and the rotation adjustment unit can be used to center clamp and rotationally drive the wide-band seismometer 63, thereby achieving north pointing adjustment of the wide-band seismometer 63.

[0059] Furthermore, the centering adjustment unit of the platform vibration monitoring system includes a synchronous drive component and four centering adjustment components; the synchronous drive component includes a clamping drive motor 38 and a U-shaped hanger 31; the centering adjustment component includes a drive tube shaft 58, an L-shaped drive rod 59, a rotating sleeve 60 and a flexible sleeve 61; the drive tube shafts 58 of the four centering adjustment components are all vertically penetrated and rotatably installed on the platform disc 30, and are located at four equally divided points on the same circle; one end of the L-shaped drive rod 59 is fixed to the upper end of the drive tube shaft 58, and the rotating sleeve 60 is rotatably installed on the vertical rod of the L-shaped drive rod 59 On; the flexible sleeve 61 is sleeved on the outer wall of the rotating sleeve 60, and is used to press onto the circumferential outer wall of the broadband seismometer 63; the U-shaped hanger 31 is vertically fixed on the lower side of the platform disc 30, and the clamping drive motor 38 is fixed to the middle of the crossbeam of the U-shaped hanger 31. A driven gear 41 is fixedly provided on the lower end of each of the four rotating sleeves 60, and a driving gear 39 meshing with the four driven gears 41 is provided on the output shaft end of the clamping drive motor 38, which is used to synchronously drive the four drive tube shafts 58 to rotate; the slave controller drives and controls the clamping drive motor 38 through the clamping drive circuit.

[0060] Four centering adjustment components can be used to clamp the circumferential outer wall of the wide-band seismometer 63 to ensure the stability of the clamping; the rotatably installed rotating sleeve 60 can follow the rotation when the wide-band seismometer 63 is adjusted to point to the north, thereby reducing the rotation adjustment resistance; the driving gear 39 is engaged with the four driven gears 41 at the same time, thereby realizing the synchronous rotation drive of the four L-shaped driving rods 59.

[0061] Furthermore, the rotation adjustment unit of the platform vibration monitoring system includes a rotation drive motor 40, a rotation drive shaft 62 and a synchronous belt transmission assembly; the rotation drive shaft 62 is installed in a driving tube shaft 58 in a through-type rotation manner; the rotation drive motor 40 is installed on the lower end of the rotation drive shaft 62 to drive the rotation drive shaft 62 to rotate; the rotation drive motor 40 is driven and controlled by the controller through the rotation drive circuit; the upper end of the rotation drive shaft 62 drives the corresponding rotation sleeve 60 to rotate through the synchronous belt transmission assembly. By rotating a rotation sleeve 60, the rotation drive of the broadband seismometer 63 is realized under the friction force of the flexible sleeve 61.

[0062] Furthermore, the synchronous belt transmission assembly includes a synchronous belt, a main synchronous pulley and a slave synchronous pulley; the main synchronous pulley is fixed to the upper end of the rotating drive shaft 62; the slave synchronous pulley is fixed to the lower end of the rotating sleeve 60; the main synchronous pulley drives the slave synchronous pulley to rotate through the synchronous belt.

[0063] Furthermore, the platform adjustment unit of the platform vibration monitoring system includes an adjustment drive motor 34, an adjustment worm 35 and an adjustment worm wheel 36; a bottom pipe shaft 37 is fixedly mounted on the U-shaped hanger 31, and the bottom pipe shaft 37 is coaxially arranged with the platform disc 30; the adjustment worm wheel 36 is fixed on the bottom pipe shaft 37, the adjustment worm 35 is rotatably mounted in the equipment compartment 29, and the adjustment worm 35 is meshed with the adjustment worm wheel 36; the adjustment drive motor 34 is used to drive the adjustment worm 35 to rotate; the adjustment drive motor 34 is driven and controlled by the controller through the adjustment drive circuit.

[0064] Furthermore, the angle alignment unit of the platform vibration monitoring system includes a laser lamp 46, a light sensor 47, a light guide column 49, a U-shaped light guide tube 48 and two pulling and locking components; the laser lamp 46 and the light guide column 49 are both vertically through-type detachable mounted on the U-shaped bracket 44, and a light guide hole is vertically arranged at the center of the light guide column 49; the light sensor 47 is mounted on the upper end of the light guide column 49 and faces the upper end opening of the light guide hole; an annular light absorbing gasket 50 is arranged on the lower end of the light guide column 49, which can absorb excess light when misaligned; the U-shaped light guide tube 48 is pull-type detachable mounted on the top of the broadband seismometer 63 by two pulling and locking components, and the tube openings of the vertical tubes at both ends of the U-shaped light guide tube 48 face upward, and the center of the horizontal tube deviates from the top center of the broadband seismometer 63. The detachable eccentric installation can effectively avoid the incident end and the exit end of the U-shaped light guide 48 from being reversed, ensuring that the south direction will not be mistakenly determined as the north direction; a reflective lens 75 is arranged at the two bends in the U-shaped light guide 48, which is used to direct the laser light 46 to enter the laser line from the center of the tube mouth of one vertical tube, and to emit it from the center of the tube mouth of the other vertical tube into the light guide hole of the light guide column 49, and then collected by the light sensor 47; a light-absorbing coating 73 is arranged on the inner wall of the U-shaped light guide 48, so that when the angle of the incident light is not right or the position is deviated, no light is emitted at the exit end, which can effectively ensure the accuracy of finding the north; the slave controller controls the power supply of the laser light 46 through the third electric switch; the light sensor 47 is electrically connected to the slave controller.

[0065] Furthermore, the tension locking assembly includes two tension branches, which include tension internal threaded tubes 52, tension bolts 53, tension support sleeves 55 and arc strips 56; the tension internal threaded tubes 52 of the two tension branches are respectively fixed on the two ends of the horizontal tube of the U-shaped light guide 48; the screw end of the tension bolt 53 passes through the tension support sleeve 55 and is screwed and installed on the corresponding tension internal threaded tube 52; the outer arc top of the arc strip 56 is connected and fixed to the side of the corresponding tension support sleeve 55 through a connecting column 54; a clamping anti-skid pad layer 57 is provided on the inner arc surface of the arc strip 56 for pressing on the top circumferential outer wall of the broadband seismometer 63. The U-shaped light guide 48 is installed by using two tension branches, so that the position can be easily adjusted during installation and debugging, so that the laser light 46 and the light sensor 47 can be respectively aligned with the two ends of the U-shaped light guide 48.

[0066] Furthermore, the embracing installation mechanism of the platform vibration monitoring system includes a first arc-shaped bent plate 14, a second arc-shaped bent plate 11 and a tension bolt 13. The first arc-shaped bent plate 14 and the second arc-shaped bent plate 11 are provided with tension support plates 15 at both ends. The two opposite tension support plates 15 are tensioned and fixed by the tension bolts 13 to clamp the first arc-shaped bent plate 14 and the second arc-shaped bent plate 11 on the main column 72; an extended support plate 12 is extended and arranged in the middle of the length edge on both sides of the second arc-shaped bent plate 11 to fit the outer wall of the main column 72, thereby enhancing the structural emphasis at the position of the cylindrical support 10; the posture adjustment mechanism includes a roll drive motor 9, a pitch drive motor 6, an inclination sensor 45, a cantilever support A support rod 3, a roll drive screw 16, a pitch drive screw 5, a pitch drive shaft 22 and two suspended strip side panels 2; an inclination sensor 45 is installed on the support platform 28 and is electrically connected to the slave controller; a cylindrical support 10 is provided in the middle of the second arc-shaped bending plate 11, and a roll support shaft 19 is rotatably installed on the cylindrical support 10; a first side seat 8 is provided on the cylindrical support 10, and a second side seat 7 is provided on the roll support shaft 19; a first side short shaft 18 is rotatably installed on the first side seat 8, and a second side short shaft 17 is rotatably installed on the second side seat 7; one end of the roll drive screw 16 is rotatably installed on the first side short shaft 18, and the other end is screwed into the second side by a through-thread. On the side short shaft 17, the roll drive motor 9 is installed on the first side short shaft 18, which is used to rotationally drive the roll drive screw 16, and the roll drive screw 16 is used to adjust the spacing between the first side short shaft 18 and the second side short shaft 17, so as to realize the rotation drive of the roll support shaft 19, and realize the adjustment of the front and rear horizontality of the unit monitoring box 1; one end of the cantilever support rod 3 is coaxially fixed on the roll support shaft 19, and an end support short shaft 20 is rotatably installed on the other end of the cantilever support rod 3; the lower parts of the two suspended strip side panels 2 are respectively vertically fixed on the front and rear sides of the unit monitoring box 1, and the front and rear ends of the pitch drive shaft 22 are respectively rotatably installed on the upper ends of the two suspended strip side panels 2; the two suspended strip side panels A side panel support shaft 4 parallel to the pitch drive shaft 22 is installed between the middle parts of the side panels 2, and the middle part of the side panel support shaft 4 is rotatably installed on the cantilever support rod 3; one end of the pitch drive screw 5 is rotatably installed on the pitch drive shaft 22, and the other end is threadedly installed on the support short shaft 20, and the pitch drive screw 5 is used to adjust the distance between the pitch drive shaft 22 and the support short shaft 20, so as to adjust the relative angle between the side panel support shaft 4 and the suspended strip side panel 2, and adjust the left and right horizontality of the unit monitoring box 1; the pitch drive motor 6 is installed on the pitch drive shaft 22, and is used to rotationally drive the pitch drive screw 5; the roll drive motor 9 and the pitch drive motor 6 are both driven and controlled by the slave controller.

[0067] Furthermore, the temperature regulating unit includes a semiconductor refrigerator 67, a heat sink 23 and an electric heating tube 65; the heat sink 23 is fixedly installed on the top of the unit monitoring box 1; the semiconductor refrigerator 67 is fixed on the inner bottom of the heat sink 23 through a thermally conductive silicone layer 68; the semiconductor refrigerator 67 is started and stopped by the controller through a second electric control switch; the electric heating tube 65 is installed on the bottom of the unit control box 64 through a hanging bracket, and the electric heating tube 65 is switched on and off by the controller through a first electric control switch; by utilizing the cooperation of the semiconductor refrigerator 67 and the electric heating tube 65, the cooling and heating control inside the unit monitoring box 1 can be realized, so that the interior can be maintained within the set temperature range.

[0068] Furthermore, a maintenance window is provided on both sides of the unit monitoring box 1, and door panels 24 are installed on the two maintenance windows, so as to facilitate maintenance personnel to carry out subsequent maintenance; an insulation layer 26 is provided on the inner walls of the unit monitoring box 1 and the door panels 24; a locking block 27 is provided on the support platform 28 and close to the inner walls of the two door panels 24, and a door handle 25 is rotatably installed on the two door panels 24, and a locking rod for snapping into the locking block 27 is provided on the side edge of the inner end of the rotating shaft of the door handle 25.

[0069] Furthermore, a center circular hole 32 is provided at the center of the support platform 28 ; the platform disc 30 is rotatably mounted at the center circular hole 32 via a turntable bearing 33 ; a circular boss 43 is provided on the lower side of the support platform 28 , and the circular boss 43 extends into the center circular hole 32 .

[0070] Furthermore, a mounting groove is provided at the center of the upper side surface of the platform disc 30, and the accelerometer 42 is installed in the mounting groove to realize embedded installation, and the top of the mounting groove is closed, so as to prevent the wide-band seismometer 63 from sinking into the mounting groove when moving.

[0071] Furthermore, a wire threading tube 21 is provided on the top of the unit monitoring box 1 , and the end of the wire threading tube 21 is bent downward. The wire threading tube 21 can facilitate the entry of external connection cables into the unit monitoring box 1 .

[0072] Furthermore, a battery is provided in the equipment compartment 29, and the battery supplies power to various circuit structures of the system through a power supply circuit.

[0073] Furthermore, the base station control cabinet 69 is provided with a main controller, a main memory, a router, a 4G communication module and a main wireless communication module; the main controller is electrically connected to the main memory, the router, the 4G communication module and the main wireless communication module respectively, the main wireless communication module communicates with the slave wireless communication module in a wireless network, and the main wireless communication module and each slave wireless communication module adopt an existing self-organizing wireless communication module.

[0074] Furthermore, the system also includes an environmental monitoring component; the environmental monitoring component includes a wind direction sensor 71 and a wind speed sensor 74; the main controller is electrically connected to the wind direction sensor 71 and the wind speed sensor 74. The wind direction sensor 71 and the wind speed sensor 74 can be used to collect wind force and wind direction data, thereby obtaining environmental data of offshore engineering.

[0075] Furthermore, reinforcing ribs are provided at the connection of the tension support plates 15 , so as to enhance the structural strength of the tension support plates 15 and avoid bending and deformation after tensioning.

[0076] The monitoring method for a platform vibration monitoring system based on offshore engineering disclosed in the present invention comprises the following steps:

[0077] Step 1: Classify the seismic resistance of each platform equipment of the offshore project into first-level seismic resistance equipment, second-level seismic resistance equipment and third-level seismic resistance equipment according to the seismic resistance strength, so as to issue corresponding platform maintenance instructions according to the magnitude of the vibration;

[0078] Step 2, the unit control box of each monitoring unit wirelessly sends the collected acceleration data, temperature data and seismic observation data to the main controller of the base station control cabinet;

[0079] Step 3, the main controller pre-processes the acceleration data, temperature data, real-time environmental data and seismic observation data received from each monitoring unit to obtain accurate acceleration data and seismic observation data;

[0080] Step 4: The main controller calculates the platform vibration data based on the accurate acceleration data and seismic observation data, and then classifies the data according to the size of the platform vibration data to obtain data classification results, which include first-level emergency data, second-level emergency data, and third-level emergency data;

[0081] Step 5: The main controller sends the data classification results in a hierarchical manner according to the set sending priority and issues corresponding platform maintenance instructions, so as to realize the rapid maintenance and troubleshooting of each platform equipment and improve the maintenance efficiency of the offshore engineering platform after the earthquake. The platform maintenance instructions include the first-level earthquake-resistant equipment maintenance instructions, the second-level earthquake-resistant equipment maintenance instructions and / or the third-level earthquake-resistant equipment maintenance instructions;

[0082] Step 6: According to the set self-check cycle and the classification results of each monitoring unit, the main controller sends corresponding posture adjustment instructions to each monitoring unit, and the posture adjustment mechanism initializes and restores the posture of the unit monitoring box.

[0083] Furthermore, in step 3 of the monitoring method, the specific steps of pretreatment are:

[0084] Step 3.1, the main controller collects real-time environmental data, and then uses the environmental data impact algorithm to calculate the environmental impact value of the real-time environmental data;

[0085] Step 3.2, performing temperature drift calibration on the received acceleration data and seismic observation data according to the temperature data, eliminating the influence of temperature on the acceleration data and seismic observation data, and improving the accuracy of the acceleration data and seismic observation data;

[0086] Step 3.3, use the environmental impact value to perform impact elimination calculation on the acceleration data and seismic observation data after temperature drift calibration to obtain accurate acceleration data and seismic observation data.

[0087] Furthermore, in step 3.1, when the environmental impact value of the real-time environmental data is calculated using the environmental data impact algorithm, the following steps are included:

[0088] First, obtain real-time environmental data at the offshore engineering location, including wind direction data and wind force data;

[0089] Then, according to the set filtering time range, the wind direction data and wind force data within the corresponding time range are obtained from the real-time environmental data. The forward acquisition is to obtain the collected wind direction data and wind force data forward from the current collection time, and then perform mean filtering on the wind direction data and wind force data within the time range to obtain the wind direction data and wind force data at the current moment. The filtering time range can be set to 30 to 10 seconds, preferably 20 seconds;

[0090] Finally, the wind direction data and wind force data at the current moment are input into the environmental factor vibration impact model for calculation to obtain the environmental impact value at the current moment.

[0091] Furthermore, the environmental factor vibration impact model is constructed based on historical monitoring data, and the specific steps are as follows:

[0092] First, historical monitoring data is obtained, including historical data of wind direction, historical data of wind force, historical data of acceleration, historical data of earthquake observation, and historical data of actual earthquakes;

[0093] Then, the various time intervals in which no earthquake occurred are determined based on the actual earthquake historical data, and the size of each time interval is set to 5 to 2 minutes, preferably 2 minutes. Then, according to the various time intervals in which no earthquake occurred, the wind direction historical data, wind force historical data, acceleration historical data, and earthquake observation historical data in the corresponding time interval are screened from the historical monitoring data as reference historical data;

[0094] Then, according to the time information in each reference historical data, the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data are aligned with the collection time, and the historical data are grouped according to the set time grouping interval in the order of collection time, and the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data in the same time grouping interval are taken as a group of historical data to be confirmed;

[0095] Then, the acceleration historical data and earthquake observation historical data in each group of historical data to be confirmed are analyzed: if one or more of the three-component historical data of the acceleration historical data in a group of historical data to be confirmed is greater than the corresponding acceleration component threshold, then this group of historical data to be confirmed is used as the historical data to be calculated; if one or more of the three-component historical data of the earthquake observation historical data in a group of historical data to be confirmed is greater than the corresponding earthquake component threshold, then this group of historical data to be confirmed is used as the historical data to be calculated; the number of groups of historical data to be calculated is W Group, W ≥100;

[0096] Then, the acceleration historical data, wind force historical data and wind direction historical data at each acquisition time in each group of historical data to be calculated are used to calculate the three-component conversion coefficients of each group of acceleration. The calculation formulas are: , where S NS , S EW and S UD It is the three-component historical data of the acceleration historical data at the current acquisition time. h 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, h 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, h 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, F The wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction;

[0097] Then for each h 1. h 2 and h 3 The conversion coefficients of the three acceleration components affecting the model are obtained by averaging them respectively. H 1. H 2 and H 3. Then establish the acceleration influence model as: , where Δ SNSi , Δ S EWi and Δ S UDi is the impact value of the three components of acceleration at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction;

[0098] Then, the three-component conversion coefficients of each group of acceleration are calculated by using the historical data of earthquake observation, wind force and wind direction at each acquisition time in each group of historical data to be calculated. The calculation formulas are: , where Z NS , Z EW and Z UD is the three-component historical data of the earthquake observation historical data at the current acquisition time, y 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, y 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, y 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, F The wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction;

[0099] Then for each y 1. y 2 and y 3 The average conversion coefficients of the three components of the earthquake affecting the model are Y 1. Y 2 and Y 3. Then establish the earthquake observation impact model as follows: , where Δ Z NSi , Δ Z EWi and Δ Z UDi is the impact value of the three components of the earthquake at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction;

[0100] Finally, the acceleration impact model and the earthquake observation impact model are jointly used as the environmental factor vibration impact model, and the three-component impact values ​​of acceleration and the three-component impact values ​​of earthquake are jointly used as the environmental impact values.

[0101] Furthermore, in step 4, the specific steps for the main controller to calculate the platform vibration data based on the accurate acceleration data and seismic observation data are as follows:

[0102] Step 4.1: Match the acceleration data with the timeline of the earthquake observation data to obtain the three-component waveform data of the acceleration data at the corresponding time. S UDi , S EWi and S NSi And the three-component waveform data of seismic observation data Z UDi , Z EWi and Z NSi , three-component waveform data S UDi , S EWi , S NSi , Z UDi , Z EWi as well as Z NSi All include the time and amplitude of data collection;

[0103] Step 4.2, using the constructed vibration data combined with the algorithm to calculate the three-component waveform data of the platform vibration data at the corresponding time, which are: , where G UDi , G EWi and G NSi are the three-component waveform data of the platform vibration data, a1 and b1 are the fusion weights of the acceleration data and the seismic observation data under small amplitude vibration, and a1+b1=1, a1>b1, a2 and b2 are the fusion weights of the acceleration data and the seismic observation data under large amplitude vibration, and a2+b2=1, a2<b2, K1, K2 and K3 are the data switching thresholds of the three components.

[0104] Furthermore, in step 4, the specific steps of classifying data according to the size of the platform vibration data are as follows:

[0105] Step 4.3, find the maximum value among the three-component waveform data, and expressed as G max ;

[0106] Step 4.4, find the maximum value G maxCompare with the set first-level classification threshold M1 and second-level classification threshold M2:

[0107] If G max < the first-level classification threshold M1, the platform vibration data at the current moment is regarded as the third-level emergency data;

[0108] If the first-level classification threshold M1≤G max <Secondary classification threshold M2, the platform vibration data at the current moment is regarded as the second-level emergency data;

[0109] If the secondary classification threshold M2≤G max , the platform vibration data at the current moment is regarded as the first-level emergency data.

[0110] Furthermore, in step 5 of the monitoring method, the main controller sends the data classification results in a hierarchical manner according to the set sending priority and issues corresponding platform maintenance instructions in the following specific steps:

[0111] Step 5.1, obtaining the communication rate of each data transmission channel when sending data recently and the amount of data to be sent in each to-be-sent sequence, the data transmission channel includes at least one wired data transmission channel and at least one wireless data transmission channel, the to-be-sent sequence is composed of a priority transmission subqueue, a secondary transmission subqueue and a sequential transmission subqueue in sequence, and the priority transmission subqueue is located at the head of the to-be-sent sequence, when sending data, the data transmission channel gives priority to sending the data in the priority transmission subqueue, and sends the data in the secondary transmission subqueue after there is no data in the priority transmission subqueue, and sends the data in the sequential transmission subqueue after there is no data in the secondary transmission subqueue;

[0112] Step 5.2, select the optimal data transmission channel for data transmission according to the transmission priority:

[0113] If the data obtained by classification is first-level emergency data, the total time for completing the sending of all the first-level emergency data in the priority sending subqueue of the to-be-sent sequence of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the first-level emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the first-level emergency data to be sent currently, and then the first-level emergency data to be sent currently is arranged after each first-level emergency data already in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel; if there is no first-level emergency data in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel, then the first-level emergency data to be sent currently is arranged at the front end of the priority sending subqueue of the to-be-sent sequence; and then the first-level emergency data to be sent is arranged at the tail of the sequential sending subqueue of the to-be-sent sequence of other data sending channels except the selected data sending channel;

[0114] If the data obtained by classification is secondary emergency data, the total time for completing the sending of all the secondary emergency data in the secondary sending subqueue of the sequence to be sent of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the secondary emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the secondary emergency data to be sent currently, and then the secondary emergency data to be sent currently is arranged after the secondary emergency data already existing in the secondary sending subqueue of the sequence to be sent of the selected data sending channel; if there is no secondary emergency data in the secondary sending subqueue of the sequence to be sent of the selected data sending channel, then the secondary emergency data to be sent currently is arranged at the front end of the secondary sending subqueue of the sequence to be sent; and then the secondary emergency data to be sent is arranged at the tail of the sequential sending subqueue of the sequence to be sent of other data sending channels except the selected data sending channel;

[0115] If the data is classified as level 3 emergency data, the level 3 emergency data to be sent is arranged at the end of the sequential sending subqueue of the to-be-sent sequence of each data sending channel;

[0116] Step 5.3, issue corresponding platform maintenance instructions based on the data classification results:

[0117] If the data classification is obtained as first-level emergency data, a first-level earthquake-resistant equipment maintenance instruction, a second-level earthquake-resistant equipment maintenance instruction, and a third-level earthquake-resistant equipment maintenance instruction are sent according to the preset communication method;

[0118] If the data classification is level 2 emergency data, a level 2 earthquake resistance equipment maintenance instruction and a level 3 earthquake resistance equipment maintenance instruction are sent according to the preset communication method;

[0119] If the data classification is obtained as level 3 emergency data, a level 3 earthquake-resistant equipment maintenance instruction is sent according to the preset communication method.

[0120] Further, in step 6, the main controller sends corresponding posture adjustment instructions to each monitoring unit, and the posture adjustment mechanism initializes and restores the posture of the unit monitoring box. The specific steps are:

[0121] Step 6.1, after receiving the posture adjustment instruction from the wireless communication module, the slave controller obtains the angle information collected by the tilt sensor 45;

[0122] Step 6.2, the slave controller drives and controls the pitch drive motor 6 and the roll drive motor 9 respectively through the pitch drive circuit and the roll drive circuit, and makes the platform disc 30 in a horizontal state according to the real-time collected information of the inclination sensor 45;

[0123] Step 6.3, the slave control obtains the north information collected by the north finder 51;

[0124] Step 6.4, the slave controller drives and controls the adjustment drive motor 34 through the adjustment drive circuit, so that the platform disc 30 rotates horizontally, and according to the real-time collected information of the north finder 51, it stops when the top crossbeam of the U-shaped bracket 44 installed on the north finder 51 points to the true north. At this time, the accelerometer 42 also completes the north pointing adjustment;

[0125] Step 6.5, the slave controller drives and controls the clamping drive motor 38 through the clamping drive circuit, so that the flexible sleeves 61 on the four L-shaped drive rods 59 are clamped on the circumferential outer wall of the wide-band seismometer 63 from four directions, so as to achieve the centering clamping of the wide-band seismometer 63 and the centering adjustment of the wide-band seismometer 63 on the platform disc 30;

[0126] Step 6.5, the slave controller drives and controls the rotation drive motor 40 through the rotation drive circuit, so that the wide-band seismometer 63 rotates horizontally, and during the rotation, the slave controller turns on the laser lamp 46 through the third electric control switch. When the light of the laser lamp 46 is incident from the incident end of the U-shaped light guide 48 and obtains a signal greater than the set light intensity from the light sensor 47, the controller stops controlling the rotation drive motor 40, which indicates that the wide-band seismometer 63 has rotated to an angle corresponding to the north-pointing position of the U-shaped bracket 44, that is, the wide-band seismometer 63 has also achieved north-pointing adjustment at this time;

[0127] Step 6.6, the slave controller drives and controls the clamping drive motor 38 so that the flexible sleeves 61 on the four L-shaped drive rods 59 are away from the wide-band seismometer 63, so as to facilitate the wide-band seismometer 63 to perform vibration monitoring.

[0128] During the above process, the temperature control always keeps running, and the temperature is monitored in real time by the temperature sensor 66. When the temperature is lower than the set low temperature threshold, the controller controls the electric heating tube 65 to turn on through the first electric control switch, and it is in the heating state. When the set heating stop threshold is reached, the heating is stopped. When the temperature is higher than the set high temperature threshold, the controller controls the semiconductor refrigerator 67 to turn on through the second electric control switch, and it is in the cooling state. When the set cooling stop threshold is reached, the cooling is stopped.

[0129] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A platform vibration monitoring system based on offshore engineering, characterized in that: The invention comprises a base station control cabinet (69) and various monitoring subsystems; the monitoring subsystems comprise an embracing installation mechanism, a posture adjustment mechanism and a unit monitoring box (1); the embracing installation mechanism of each monitoring unit is detachably installed on a main body column (72) at each monitoring point; the posture adjustment mechanism is fixed on the embracing installation mechanism, the unit monitoring box (1) is installed on the posture adjustment mechanism, the embracing installation mechanism stably supports the posture adjustment mechanism, and the posture adjustment mechanism adjusts the posture of the unit monitoring box (1); a unit control box (64), a broadband seismometer (63), an accelerometer (42), a temperature sensor (66), a temperature adjustment unit and a north-pointing reset mechanism are arranged in the unit monitoring box (1); A slave controller, a slave memory and a slave wireless communication module are arranged in the primary control box (64); the broadband seismometer (63) and the accelerometer (42) are both located on the north-pointing reset mechanism, and the north-pointing reset mechanism resets and adjusts the north-pointing axis of the broadband seismometer (63) and the accelerometer (42); the slave controller is wirelessly connected to the base station control cabinet (69) via the slave wireless communication module; the broadband seismometer (63), the accelerometer (42), the temperature sensor (66), the temperature adjustment unit, the slave memory and the slave wireless communication module are all electrically connected to the slave controller, and the temperature adjustment unit adjusts and controls the temperature in the unit monitoring box (1); the north-pointing reset mechanism and the posture adjustment mechanism are both controlled by the slave controller; The embracing installation mechanism comprises a first arc-shaped bending plate (14), a second arc-shaped bending plate (11) and a tension bolt (13); tension support plates (15) are provided at both ends of the first arc-shaped bending plate (14) and the second arc-shaped bending plate (11); the two opposing tension support plates (15) are tensioned and fixed by the tension bolts (13) to clamp the first arc-shaped bending plate (14) and the second arc-shaped bending plate (11) on the main column (72); extended support plates (12) are extended and arranged in the middle of the length edges on both sides of the second arc-shaped bending plate (11) to fit the outer wall of the main column (72); the posture adjustment mechanism comprises a roll drive motor (9), a pitch drive motor ( 6), an inclination sensor (45), a cantilever support rod (3), a roll drive screw (16), a pitch drive screw (5), a pitch drive shaft (22) and two suspended strip side panels (2); the inclination sensor (45) is mounted on the support platform (28) and is electrically connected to the slave controller; a cylindrical support (10) is provided in the middle of the second arc-shaped bending plate (11), and a roll support shaft (19) is rotatably mounted on the cylindrical support (10); a first side seat (8) is provided on the cylindrical support (10), and a second side seat (7) is provided on the roll support shaft (19); a first side short shaft (18) is rotatably mounted on the first side seat (8), and a second side seat (7) is provided on the second side seat (7). A second side short shaft (17) is rotatably mounted on the second side seat (7); one end of the roll drive screw (16) is rotatably mounted on the first side short shaft (18), and the other end is threadedly mounted on the second side short shaft (17); a roll drive motor (9) is mounted on the first side short shaft (18) for rotationally driving the roll drive screw (16); one end of the cantilever support rod (3) is coaxially fixed on the roll support shaft (19), and an end support short shaft (20) is rotatably mounted on the other end of the cantilever support rod (3); the lower parts of the two suspended strip side panels (2) are respectively vertically fixed on the front and rear sides of the unit monitoring box (1), and the pitch drive shaft The front and rear ends of the side plates (22) are respectively rotatably mounted on the upper ends of the two suspended strip-shaped side plates (2); a side plate support shaft (4) parallel to the pitch drive shaft (22) is mounted between the middle parts of the two suspended strip-shaped side plates (2), and the middle part of the side plate support shaft (4) is rotatably mounted on the cantilever support rod (3); one end of the pitch drive screw (5) is rotatably mounted on the pitch drive shaft (22), and the other end is threadedly screwed on the support short shaft (20); the pitch drive motor (6) is mounted on the pitch drive shaft (22) for rotationally driving the pitch drive screw (5); the roll drive motor (9) and the pitch drive motor (6) are both driven and controlled by the slave controller.

2. The platform vibration monitoring system based on offshore engineering according to claim 1 is characterized in that: The north-pointing resetting mechanism comprises a platform disc (30), a north-finder (51), a U-shaped bracket (44), an angle alignment unit, a platform adjustment unit, a rotation adjustment unit and a centering adjustment unit; a support platform (28) is arranged on the lower side of the unit monitoring box (1), and an equipment compartment (29) is arranged below the support platform (28); the platform disc (30) is rotatably mounted at the center of the support platform (28); the U-shaped bracket (44) is vertically fixedly mounted on the upper side of the platform disc (30), and the north-finder (51) is fixedly mounted on the middle of the top crossbeam of the U-shaped bracket (44); the accelerometer (42) is embedded and mounted at the center of the upper side of the platform disc (30), and the broadband seismometer (63) is placed on the platform disc (30). The device is mounted on the upper side of the platform disc (30); the angle alignment unit is mounted on the U-shaped bracket (44) and the broadband seismometer (63), and is used for performing north-pointing alignment detection on the broadband seismometer (63); the platform adjustment unit is located in the equipment compartment (29), and is used for rotationally adjusting the platform disc (30); the centering adjustment unit is mounted on the platform disc (30), and is used for centering the circumferential outer wall of the broadband seismometer (63); the rotation adjustment unit is mounted on the centering adjustment unit, and is used for rotationally adjusting the broadband seismometer (63) that is center-clamped; the north finder (51) is electrically connected to the slave controller; the angle alignment unit, the platform adjustment unit, the rotation adjustment unit, and the centering adjustment unit are all controlled by the slave controller.

3. The platform vibration monitoring system based on offshore engineering according to claim 2 is characterized in that: The centering adjustment unit comprises a synchronous drive component and four centering adjustment components; the synchronous drive component comprises a clamping drive motor (38) and a U-shaped hanger (31); the centering adjustment component comprises a drive tube shaft (58), an L-shaped drive rod (59), a rotating sleeve (60) and a flexible sleeve (61); the drive tube shafts (58) of the four centering adjustment components are all vertically penetrated and rotatably mounted on the platform disc (30) and are located at four equally divided points on the same circumference; one end of the L-shaped drive rod (59) is fixed to the upper end of the drive tube shaft (58), and the rotating sleeve (60) is rotatably mounted on the vertical rod of the L-shaped drive rod (59); the flexible sleeve (61 ) is sleeved on the outer wall of the rotating sleeve (60) and is used to press onto the circumferential outer wall of the broadband seismometer (63); the U-shaped hanger (31) is vertically fixed on the lower side of the platform disc (30); the clamping drive motor (38) is fixed to the middle of the crossbeam of the U-shaped hanger (31); a driven gear (41) is fixedly arranged on the lower end of each of the four rotating sleeves (60); a driving gear (39) that meshes with the four driven gears (41) at the same time is arranged on the output shaft end of the clamping drive motor (38) and is used to synchronously drive the four drive tube shafts (58) to rotate; the slave controller drives and controls the clamping drive motor (38) through the clamping drive circuit.

4. The platform vibration monitoring system based on offshore engineering according to claim 2 is characterized in that: The angle alignment unit comprises a laser lamp (46), a light sensor (47), a light guide column (49), a U-shaped light guide tube (48), and two tension locking components; the laser lamp (46) and the light guide column (49) are both vertically through-type detachably mounted on the U-shaped bracket (44), and a light guide hole is vertically arranged at the center of the light guide column (49); the light sensor (47) is mounted on the upper end of the light guide column (49) and faces the upper end opening of the light guide hole; an annular light absorbing gasket (50) is arranged on the lower end of the light guide column (49); the U-shaped light guide tube (48) is detachably mounted on the top of the broadband seismometer (63) through the two tension locking components, and the U The openings of the vertical tubes at both ends of the U-shaped light guide tube (48) face upward, and the center of the horizontal tube deviates from the top center of the broadband seismometer (63); a reflective lens (75) is provided at two bends in the tube of the U-shaped light guide tube (48), which is used to emit a laser light (46) from the center of the opening of one vertical tube, and emit it from the center of the opening of the other vertical tube into the light guide hole of the light guide column (49), and then collected by the light sensor (47); a light absorbing coating (73) is provided on the inner wall of the U-shaped light guide tube (48); the slave controller controls the power supply of the laser light (46) through a third electric switch; and the light sensor (47) is electrically connected to the slave controller.

5. A monitoring method for a platform vibration monitoring system based on offshore engineering according to claim 1, characterized in that: The steps include: Step 1: Classify the seismic resistance of each platform equipment of the offshore project into first-level seismic resistance equipment, second-level seismic resistance equipment and third-level seismic resistance equipment according to the seismic resistance strength; Step 2, the unit control box of each monitoring unit wirelessly sends the collected acceleration data, temperature data and seismic observation data to the main controller of the base station control cabinet; Step 3, the main controller pre-processes the received acceleration data, temperature data, real-time environmental data and seismic observation data of each monitoring unit to obtain accurate acceleration data and seismic observation data; Step 4: The main controller calculates the platform vibration data based on the accurate acceleration data and seismic observation data, and then classifies the data according to the size of the platform vibration data to obtain data classification results, which include first-level emergency data, second-level emergency data, and third-level emergency data; Step 5, the main controller sends the data classification results in a graded manner according to the set sending priority and issues corresponding platform maintenance instructions, the platform maintenance instructions including the first-level earthquake-resistant equipment maintenance instructions, the second-level earthquake-resistant equipment maintenance instructions and / or the third-level earthquake-resistant equipment maintenance instructions; Step 6: According to the set self-check cycle and the classification results of each monitoring unit, the main controller sends corresponding posture adjustment instructions to each monitoring unit, and the posture adjustment mechanism initializes and restores the posture of the unit monitoring box.

6. The monitoring method for a platform vibration monitoring system based on offshore engineering according to claim 5, characterized in that: In step 3, the specific steps of preprocessing are: Step 3.1: The main controller collects real-time environmental data and then uses the environmental data impact algorithm to calculate the environmental impact value of the real-time environmental data: First, obtain real-time environmental data at the offshore engineering location, including wind direction data and wind force data; Then, according to the set filtering value time range, the wind direction data and wind force data within the corresponding time range are obtained from the real-time environmental data, and then the wind direction data and wind force data within the time range are average filtered to obtain the wind direction data and wind force data at the current moment; Finally, the wind direction data and wind force data at the current moment are input into the environmental factor vibration impact model for calculation to obtain the environmental impact value at the current moment; Step 3.2, performing temperature drift calibration on the received acceleration data and seismic observation data according to the temperature data to eliminate the influence of temperature on the acceleration data and seismic observation data; Step 3.3, use the environmental impact value to perform impact elimination calculation on the acceleration data and seismic observation data after temperature drift calibration to obtain accurate acceleration data and seismic observation data.

7. The monitoring method for a platform vibration monitoring system based on offshore engineering according to claim 6, characterized in that: In step 3.1, the environmental factor vibration impact model is constructed based on historical monitoring data. The specific steps are as follows: First, historical monitoring data is obtained, including historical data of wind direction, historical data of wind force, historical data of acceleration, historical data of earthquake observation, and historical data of actual earthquakes; Then, the various time intervals where no earthquakes occurred are determined based on the actual earthquake historical data, and then the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data in the corresponding time intervals are selected from the historical monitoring data as reference historical data; Then, according to the time information in each reference historical data, the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data are aligned with the collection time, and the historical data are grouped according to the set time grouping interval in the order of collection time, and the wind direction historical data, wind force historical data, acceleration historical data and earthquake observation historical data in the same time grouping interval are taken as a group of historical data to be confirmed; Then, the acceleration historical data and the seismic observation historical data in each group of historical data to be confirmed are analyzed: if one or more component historical data among the three component historical data of the acceleration historical data in a group of historical data to be confirmed is greater than the corresponding acceleration component threshold, then the group of historical data to be confirmed is used as the historical data to be calculated; if one or more component historical data among the three component historical data of the seismic observation historical data in a group of historical data to be confirmed is greater than the corresponding seismic component threshold, then the group of historical data to be confirmed is used as the historical data to be calculated; Then, the acceleration historical data, wind force historical data and wind direction historical data at each acquisition time in each group of historical data to be calculated are used to calculate the three-component conversion coefficients of each group of acceleration. The calculation formulas are: , where S NS , S EW and S UD It is the three-component historical data of the acceleration historical data at the current acquisition time. h 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, h 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, h 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, F The wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction; Then for each h 1. h 2 and h 3 The conversion coefficients of the three components of acceleration affecting the model are obtained by averaging them respectively: H 1. H 2 and H 3. Then establish the acceleration influence model as: , where Δ S NSi , Δ S EWi and Δ S UDi is the impact value of the three components of acceleration at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction; Then, the three-component conversion coefficients of each group of acceleration are calculated by using the historical data of earthquake observation, wind force and wind direction at each acquisition time in each group of historical data to be calculated. The calculation formulas are: , where Z NS , Z EW and Z UD is the three-component historical data of the earthquake observation historical data at the current acquisition time, y 1 is the conversion coefficient of the first component of acceleration at the current acquisition moment, y 2 is the conversion coefficient of the second component of acceleration at the current acquisition time, y 3 is the conversion coefficient of the third component of acceleration at the current acquisition time, F The wind force value of the historical wind force data at the current collection time. θ The clockwise angle between the wind direction of the historical wind direction data at the current collection time and the true north direction; Then for each y 1. y 2 and y 3 The average conversion coefficients of the three components of the earthquake affecting the model are Y 1. Y 2 and Y 3. Then establish the earthquake observation impact model as follows: , where Δ Z NSi , Δ Z EWi and Δ Z UDi is the impact value of the three components of the earthquake at the current moment, F i is the wind force value at the current moment, and is the clockwise angle of the wind direction at the current moment relative to the north direction; Finally, the acceleration impact model and the earthquake observation impact model are jointly used as the environmental factor vibration impact model, and the three-component impact values ​​of acceleration and the three-component impact values ​​of earthquake are jointly used as the environmental impact values.

8. The monitoring method for a platform vibration monitoring system based on offshore engineering according to claim 5, characterized in that: In step 4, the specific steps for the main controller to calculate the platform vibration data based on the accurate acceleration data and seismic observation data are as follows: Step 4.1: Match the acceleration data with the timeline of the earthquake observation data to obtain the three-component waveform data of the acceleration data at the corresponding time. S UDi , S EWi and S NSi And the three-component waveform data of seismic observation data Z UDi , Z EWi and Z NSi , three-component waveform data S UDi , S EWi , S NSi , Z UDi , Z EWi as well as Z NSi All include the time and amplitude of data collection; Step 4.2, using the constructed vibration data combined with the algorithm to calculate the three-component waveform data of the platform vibration data at the corresponding time, which are: , where G UDi , G EWi and G NSi are the three-component waveform data of the platform vibration data, a1 and b1 are the fusion weights of the acceleration data and the seismic observation data under small amplitude vibration, and a1+b1=1, a1>b1, a2 and b2 are the fusion weights of the acceleration data and the seismic observation data under large amplitude vibration, and a2+b2=1, a2<b2, K1, K2 and K3 are the data switching thresholds of the three components.

9. The monitoring method for a platform vibration monitoring system based on offshore engineering according to claim 5, characterized in that: In step 5, the main controller sends the data classification results in a hierarchical manner according to the set sending priority and issues the corresponding platform maintenance instructions. The specific steps are: Step 5.1, obtaining the communication rate of each data transmission channel when sending data recently and the amount of data to be sent in each to-be-sent sequence, the data transmission channel includes at least one wired data transmission channel and at least one wireless data transmission channel, the to-be-sent sequence is composed of a priority transmission subqueue, a secondary transmission subqueue and a sequential transmission subqueue in sequence, and the priority transmission subqueue is located at the head of the to-be-sent sequence, when sending data, the data transmission channel gives priority to sending the data in the priority transmission subqueue, and sends the data in the secondary transmission subqueue after there is no data in the priority transmission subqueue, and sends the data in the sequential transmission subqueue after there is no data in the secondary transmission subqueue; Step 5.2, select the optimal data transmission channel for data transmission according to the transmission priority: If the data obtained by classification is first-level emergency data, the total time for completing the sending of all the first-level emergency data in the priority sending subqueue of the to-be-sent sequence of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the first-level emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the first-level emergency data to be sent currently, and then the first-level emergency data to be sent currently is arranged after each first-level emergency data already in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel; if there is no first-level emergency data in the priority sending subqueue of the to-be-sent sequence of the selected data sending channel, then the first-level emergency data to be sent currently is arranged at the front end of the priority sending subqueue of the to-be-sent sequence; and then the first-level emergency data to be sent is arranged at the tail of the sequential sending subqueue of the to-be-sent sequence of other data sending channels except the selected data sending channel; If the data obtained by classification is secondary emergency data, the total time for completing the sending of all the secondary emergency data in the secondary sending subqueue of the sequence to be sent of each data sending channel is calculated respectively, and the data sending channel with the smaller total time for completing the sending is selected as the data sending channel for the secondary emergency data to be sent currently; if the total time for completing the sending of each data sending channel is equal, then any one of the data sending channels is selected as the data sending channel for the secondary emergency data to be sent currently, and then the secondary emergency data to be sent currently is arranged after the secondary emergency data already existing in the secondary sending subqueue of the sequence to be sent of the selected data sending channel; if there is no secondary emergency data in the secondary sending subqueue of the sequence to be sent of the selected data sending channel, then the secondary emergency data to be sent currently is arranged at the front end of the secondary sending subqueue of the sequence to be sent; and then the secondary emergency data to be sent is arranged at the tail of the sequential sending subqueue of the sequence to be sent of other data sending channels except the selected data sending channel; If the data is classified as level 3 emergency data, the level 3 emergency data to be sent is arranged at the end of the sequential sending subqueue of the to-be-sent sequence of each data sending channel; Step 5.3, issue corresponding platform maintenance instructions based on the data classification results: If the data classification is obtained as first-level emergency data, a first-level earthquake-resistant equipment maintenance instruction, a second-level earthquake-resistant equipment maintenance instruction, and a third-level earthquake-resistant equipment maintenance instruction are sent according to the preset communication method; If the data classification is level 2 emergency data, a level 2 earthquake resistance equipment maintenance instruction and a level 3 earthquake resistance equipment maintenance instruction are sent according to the preset communication method; If the data classification is obtained as level 3 emergency data, a level 3 earthquake-resistant equipment maintenance instruction is sent according to the preset communication method.

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