CN116007804A - Water engineering concealed limited area polarization maintaining fiber multi-purpose intelligent sensing system and method - Google Patents
Water engineering concealed limited area polarization maintaining fiber multi-purpose intelligent sensing system and method Download PDFInfo
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Abstract
The invention discloses a hydraulic Cheng Yinbi limited area polarization maintaining fiber multi-purpose intelligent sensing system and method, comprising a polarization maintaining fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module and a light channel diversion module; the polarization maintaining optical fiber touch guide module is connected with the lock control module, the lock control module is connected with the direction control module through the first polarization maintaining optical fiber and the second polarization maintaining optical fiber, the direction control module is connected with the magnetization module through the perching body, and the magnetization module is connected with the optical module through the optical channel diversion module. The invention provides a point-line-surface assembly linkage touch fusion mechanism, effectively increases the multi-dwelling capability of the polarization maintaining optical fiber for adapting to various complex working conditions, optimally expands the intelligent sensing efficiency of the polarization maintaining optical fiber such as the sensing information range, direction, range, sensitivity and the like, comprehensively improves the quantitative and qualitative sensing capability of the polarization maintaining optical fiber on the structure body in the limited area of the hydraulic power Cheng Yinbi, and provides a new thought for the difficult sensing problem of the structure body in the limited area of the hydraulic power Cheng Yinbi.
Description
Technical Field
The invention relates to a hydraulic Cheng Yinbi restricted area polarization maintaining fiber multi-purpose intelligent sensing system and method, and belongs to the field of hydraulic health monitoring.
Background
The hydraulic engineering has complex structure, various forms, huge volume and strong unknown property, the occurrence of a plurality of engineering diseases is not a product of one kick, the hydraulic engineering is a slow and continuous development process, and the terminal of disease development is a process with great influence on the functionality of a structure, so that the change of the process needs to be studied in an important way, and the high-quality monitoring of a wide-service-life area is realized from an initial end to the terminal.
For the traditional sensing device, the problems of poor engineering applicability, narrow application range, single-point single physical quantity monitoring, excessive lead wires and the like affecting the monitoring effect often occur, so that advanced and practical monitoring technology and equipment need to be developed, and a batch of representative methods are derived along with the continuous improvement of the safety awareness and the monitoring technology of current people: the novel method has the advantages of strong electromagnetic interference resistance, difficult external environment influence, long service life, realization of distributed multi-parameter monitoring, difficult occurrence of measured value drift, low price, convenient arrangement and the like, but has larger problems in engineering applicability, application range, multi-parameter monitoring and the like, needs to be carefully researched and innovated, and provides and constructs a novel monitoring technology sensing system which can be truly practical.
The invention discloses a multifunctional intelligent sensing system and method for a hydraulic Cheng Yinbi limited area polarization maintaining optical fiber, which are based on the polarization maintaining optical fiber, and can realize the full-range monitoring of damage factors in a complex service environment.
Disclosure of Invention
The invention aims to: in order to focus on the multilevel state of the occurrence of the hydraulic engineering diseases, clarify the engineering foundation of disease-induced evolution, construct mechanical and mathematical mechanism systems for representing the commonality law of the disease state, clearly and quantitatively represent the objective index of the structural safety state, realize the accurate diagnosis and early warning of the service state of the structural body, and establish a new paradigm of engineering scientific research.
The invention overcomes the defects in the prior art, and provides the multi-purpose intelligent sensing system and method for the polarization maintaining optical fiber in the limited area of the hydraulic power Cheng Yinbi, which have the characteristics of strong adaptability, convenience in arrangement, flow and high efficiency, improve the monitoring capability, precision, range and range, have low cost, are simple to operate and excellent in effect, can realize autonomous monitoring of the hidden limited area of the hydraulic power Cheng Daice, realize multi-isomerization and multi-targeting of monitoring, and realize three-dimensional sensing of the position to be detected in the universalization dead-angle-free multi-dimensional space.
The technical scheme is as follows: in order to solve the technical problems, the hydraulic Cheng Yinbi limited area polarization maintaining optical fiber amphibious intelligent sensing system comprises six parts, namely a polarization maintaining optical fiber touch guide module, a lock control module, a direction control module, a magnetization module, an optical module and a light channel diversion module; the polarization maintaining optical fiber touch guide module is connected with the lock control module through a first upper control fiber rod, a first lower control fiber rod, a second left control fiber rod and a second right control fiber rod, the lock control module is connected with the direction control module through a first polarization maintaining optical fiber and a second polarization maintaining optical fiber, the direction control module is connected with the magnetization module through a perching body, and the magnetization module is connected with the optical module through the optical channel diversion module.
The polarization maintaining optical fiber touch guide module comprises a first polarization maintaining optical fiber touch guide assembly, a second polarization maintaining optical fiber touch guide assembly, a third polarization maintaining optical fiber touch guide assembly and a fourth polarization maintaining optical fiber touch guide assembly, the device comprises a back taper triangle, a bottom guard, a first uploading connecting rod, a first uploading control guide block, a first uploading blocking block, a first uploading breaking block, a first uploading magnetic reserving area, a first uploading magnetic control body, a first uploading fiber control rod, a first downloading connecting rod, a first downloading force rail, a first downloading connecting rod, a first downloading fiber control rod, a first downloading control guide block, a first downloading blocking block, a first downloading breaking block, a first downloading magnetic control body the first lower magnetic stay region, the second left transmission connecting rod, the second left force rail, the second left control guide block, the second left control fiber rod, the second left blocking card, the second left breaking card, the second left magnetic stay region, the second left magnetic control body, the second right transmission connecting rod, the second right control fiber rod, the second right control guide block, the second right blocking card, the second right breaking card, the second right magnetic stay region and the second right magnetic control body.
The lock control module comprises a first upper lock connecting table, a first lower lock connecting table, a second left lock connecting table and a second right lock connecting table; the direction control module comprises an electrodeless control block, an stepless connecting rod, a middle connecting table and a clamping groove; the magnetization module comprises an upper main direction magnetic control block, a lower main direction magnetic control block, a forward floating body and a floating body port; the optical module comprises a polarization laser platform and a polarization maintaining optical fiber polarization interpretation platform. The optical channel transfer module comprises a rotary ball, a rotary ring, an inner transmission slit, a through channel, a special light inlet and outlet end, a rear fixing body, a rear rotary slit, a rear vacuum cavity, a rear blocking body, an optical channel, a front blocking body, a front rotary slit, a front vacuum cavity, a front fixing body and a common light inlet and outlet end.
The intelligent sensing system for the multi-purpose polarization maintaining optical fiber in the water engineering concealed limited area is characterized in that the bottom protection body and the inverted cone triangle are combined to be distributed in four directions of the multi-purpose body, damage information of the limited area of the water engineering Cheng Yinbi to be detected is effectively transmitted to the polarization maintaining optical fiber touch-sensing module through a first uploading connecting rod, a first downloading connecting rod, a second left-handed connecting rod and a first right-handed connecting rod, and the universal dead-angle-free sensing of the part to be detected is realized.
The laser in the waveguide enters the front vacuum cavity at the front fixing body after passing through the common light in-out end, and enters the front resistor body only through the front rotating slot by rotating the front rotating slot, the pressed laser enters the rear resistor body through a light channel with a certain length to wait for the opening of the rear rotating slot, and after the opening of the rear rotating slot, the laser passes through the rear vacuum cavity on the rear fixing body, so that only the laser at the front rotating slot consistent with the rear rotating slot can pass through, and the special laser is output through the special light in-out end.
The intelligent sensing system for the polarization maintaining fiber multi-purpose in the water engineering concealed limited area comprises a first upper control guide block, a first lower control guide block, a second left control guide block and a second right control guide block which are driven by a first upper transmission connecting rod, a first lower transmission connecting rod, a second left transmission connecting rod and a second right transmission connecting rod to perform eight-directional self-adaptive motion along a first upper force rail, a first lower force rail, a second left force rail and a second right force rail, so that multidimensional space three-dimensional sensing is realized.
The utility model provides a water engineering conceals multi-intelligent sensing system of restricted district polarization-maintaining optical fiber, go up the control guide block in first, first accuse guide block down, second left side accuse guide block, second right side accuse guide block's the inertia down through first accuse fine pole, first accuse fine pole down, second left side accuse fine pole, the control of the fine pole of second right side accuse, pull first lock even, second right side even has realized segmentation pull-press self-adaptation multidirectional dynamic real-time perception to polarization-maintaining optical fiber, effectively guaranteed the multi-isomerism, the multi-objective of monitoring.
In the water engineering hidden limited area polarization-maintaining fiber multi-purpose intelligent sensing system, a first middle connecting table is arranged at the upper end of an electrodeless control block and is connected in a staggered manner, a middle connecting structure is a stepless connecting rod, the electrodeless control block can rotate around the stepless connecting rod in a 360-degree randomization manner, fixed monitoring of an angle before monitoring can be performed, self-sensing can also be performed without a preset angle along with the change condition caused by the self-change of the structure, a damping material with a fixed coefficient is set between the electrodeless control block and the stepless connecting rod, disordered random fluctuation of the electrodeless control block caused by tiny disturbance of a structural body is reduced, the monitoring precision is improved, the influence of external interference factors is reduced from hardware setting, and the monitoring precision is improved.
When the first upper control guide block, the first lower control guide block, the second left control guide block, the second right control guide block can trigger the blocking performance of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card and the blocking performance of the second right blocking card is far away from the blocking performance of the outer edge direction of the water project, when the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block are subjected to the action of the first upper control connecting rod, the first lower control connecting rod, the second left control connecting rod and the second left control connecting rod, the second right control connecting rod exceeds the blocking capacity of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card, the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block can enter the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card front end blank area, so that the optical fibers are effectively monitored, and the first upper control guide block, the first lower control guide block, the second left control guide block and the second upper control guide block and the second left control guide block can reach the first left blocking area and the second left blocking area and the first right blocking area and the second blocking area respectively.
The intelligent sensing system comprises a first upper blocking card, a first lower blocking card, a second left blocking card and a second right blocking card, wherein the positions of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card are respectively equal to the positions of a first upper locking connecting table, a first lower locking connecting table, a second left locking connecting table and a second right locking connecting table, the fact that the polarization maintaining optical fibers are exactly positioned at a zero point position is guaranteed, and the positions of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card are respectively lower than the positions of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card.
The utility model provides a water engineering conceals the multi intelligent sensing system of limit district polarization-preserving optical fiber, through controlling first upper magnetic control body, first lower magnetic control body, second left magnetic control body, second right magnetic control body in first upper magnetic stay district, first lower magnetic stay district, second left magnetic stay district, second right magnetic stay district's position, have, how much, realize resisting first uploading connecting rod, first downloading connecting rod, second left transmission connecting rod, second right transmission connecting rod along the size of the ability that the outer edge direction of multi is close to, reduce the tiny dynamic vibration of structure body that awaits measuring and lead to polarization-preserving optical fiber to disturbed influence, realize the influence monitoring of real external main action, improve the adaptability of monitoring, improve the ability, precision, scope and the range of monitoring.
Preferably, the top surface of the forward floating body is lower than the normal plane of the polypody, the forward floating body is vacuumized through a floating body port, the floating capacity of the polypody during autonomous running in water is improved, and the polypody is fixed at a metal structure of a concealed limited area to be detected through the action of an upper main magnetic control block and a lower main magnetic control block, so that autonomous hydraulic Cheng Daice concealed limited area monitoring is realized.
Preferably, the optical channel diversion module can be connected with the polarization maintaining optical fiber and the common sensing optical fiber, the rotating ring can drive the inner transparent slit to rotate 360 degrees around the rotating ball, and the inner transparent slit can prevent the incidence of large-flux space light from interfering the light transmission at the connecting part.
Preferably, the polarization maintaining optical fiber polarization interpretation platform is connected with the second polarization maintaining optical fiber through the light path diversion module, the second polarization maintaining optical fiber is connected with the first polarization maintaining optical fiber through the through-connection path, and the first polarization maintaining optical fiber is connected with the polarization laser platform through the light path diversion module.
Preferably, the width of the left side and the right side of the polypody is narrowed, the front side and the rear side are pointed ends, and the structure is a tuna-like body type structure and is convenient for the polypody operation in water.
A sensing method of a polarization maintaining fiber multi-purpose intelligent sensing system according to a hydraulic Cheng Yinbi limited area comprises the following steps:
the method comprises the steps of firstly, determining a monitoring range and a monitoring area, locking a target to be detected, determining whether a sensitization sensing process or a sensitization sensing process is carried out by the size of the target to be detected influenced by the outside, determining a macroscopic range, and locking the lengths of a first upper force rail, a first lower force rail, a second left force rail and a second right force rail;
and secondly, connecting the polarization maintaining optical fiber anticlockwise along the first lower locking connecting table, the middle connecting table, the first upper locking connecting table, the through channel, the second left locking connecting table, the electrodeless control block and the second right locking connecting table, and completing the positioning, marking and fixing work on the first lower locking connecting table, the middle connecting table, the first upper locking connecting table, the second left locking connecting table, the electrodeless control block and the second right locking connecting table.
And thirdly, configuring a polarization maintaining optical fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module and a light channel diversion module, completing the combined configuration of the structure, and determining the angle relation between the electrodeless control block and the intermediate connecting platform through a target to be monitored.
And fourthly, determining whether the first upper magnetic reserved area, the first lower magnetic reserved area, the second left magnetic reserved area and the second right magnetic reserved area are empty and whether the first upper magnetic control body, the first lower magnetic control body, the second left magnetic control body and the second right magnetic control body are subjected to bit supplementing, so as to complete a magnetic control program of the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block.
And fifthly, according to the characteristics of the hidden restricted area of the water engineering, the self-fixing of the forward floating body, the lower main magnetic control block and the upper main magnetic control block is determined or selected in advance through the clamping grooves, and the inverted cone triangle on the bottom protection body is effectively connected with the restricted area of the water engineering Cheng Yinbi in the construction period.
And sixthly, connecting the first polarization maintaining optical fiber to a light channel diversion module at one side of the polarization laser table, connecting the common sensing optical fiber through the other end of the light channel diversion module at one side of the polarization laser table, connecting the second polarization maintaining optical fiber to the light channel diversion module at one side of the polarization maintaining optical fiber polarization interpretation table, connecting the other end of the light channel diversion module at one side of the polarization maintaining optical fiber polarization interpretation table to the common sensing optical fiber, and determining the length of the common sensing optical fiber based on whether remote monitoring is performed.
Seventh, opening the polarization laser table and the polarization maintaining fiber polarization interpretation table, connecting the first polarization maintaining fiber and the second polarization maintaining fiber, testing the polarization maintaining fibers at all positions of the first upper locking connecting table and the middle connecting table, the middle connecting table and the first lower locking connecting table, the second left locking connecting table and the middle connecting table, the middle connecting table and the second right locking connecting table and the through passage, ensuring that the polarization maintaining fibers at all positions run normally, and finishing sensing.
The beneficial effects are that: the multi-complex intelligent sensing system and the multi-complex intelligent sensing method for the polarization maintaining optical fiber in the limited area of the hydraulic power Cheng Yinbi have the advantages of complete structure, strong flow and automation, fusion construction of the monitoring system for the multi-complex service area of the polarization maintaining optical fiber touch guide module, the lock control module, the orientation control module, the magnetization module, the optical module and the optical channel transfer six-big module, strong adaptability, convenient arrangement, high precision, wide range, controllable measuring range, controllable sensitivity and strong anti-interference performance, low cost, simple operation and excellent effect, can realize the intelligent and three-dimensional monitoring of the limited area of the hydraulic power Cheng Daice with autonomy, multi-isomerization, multi-targeting, universalization, no dead angle and multi-dimension, and greatly ensures the application and popularization capability of the technology in practical engineering.
Drawings
FIG. 1 is a schematic diagram of a sensing system according to the present invention;
FIG. 2 is a schematic diagram of a first polarization maintaining fiber optic touch pad assembly according to the present invention;
FIG. 3 is a schematic diagram illustrating the operation of a first polarization maintaining fiber optic touch pad assembly according to the present invention;
FIG. 4 is a block diagram of a track diversion module according to the present invention;
FIG. 5 is a diagram showing the position of the front rotating joint in the present invention;
FIG. 6 is a block diagram of a steering module according to the present invention;
wherein: 101-inverted cone triangle; 102-a bottom guard; 103-a first upload link; 104-a first upper force rail; 105-a first upper control block; 106-a first upper blocking card; 107-first card loading; 108-a first upper magnetic latching region; 109-a first upper magnetic control body; 110-a first upper fiber control rod; 111-a first lower force rail; 112-a first download link; 113-a first lower control fiber rod; 114-a first lower control block; 115-a first lower blocking card; 116-first lower break card; 117-a first lower magnetic control body; 118-a first lower magnetic latching region; 135-spin point; 201-a first locking connection; 202-a first polarization maintaining fiber; 203-a middle connecting station; 204-a first lower lock connection station; 301-stepless connecting rod; 302, an electrodeless control block; 303-a second polarization maintaining fiber; 304-a second left locking connection; 305-a second left fiber control rod; 306-a second right fiber control rod 306; 307-a second left control block 307; 308-a second left blocking card 308; 309-second left break card; 310-a second left magnetic latching region; 311-a second left magnetic control body; 312-a second left transfer link; 313-a second right control block; 314-a second right blocking card; 315-second right break card; 316-second right magnetic latching region; 317-second right magnetic control body; 318-a second right transfer link; 319-second left force rail, 320-second right force rail, 321-second right lock connection table, 401-through channel; 402-a polarization maintaining optical fiber polarization interpretation stage; 403-polarized laser stage; 501-a track diversion module; 502-a special light input/output end; 503-a common light input/output end; 504-a rear anchor; 505-rear rotational slit; 506-a rear vacuum chamber; 507-rear resistor; 508-optical channel; 509-a front resistor; 510-front rotating slit; 511-a front vacuum chamber; 512-front fixation body; 513-a rotating ring; 514-inner penetration slit; 515-spin; 601-clamping grooves; 602-an upper main magnetic control block; 603-lower main direction magnetic control block; 604-forward float; 605-float port; 606-polytropic body.
Detailed Description
The invention is further described with reference to fig. 1 to 6, in order to better embody the implementation process of the invention:
in this embodiment, a dam toe area under water of a gravity dam is selected for analysis, and is a hidden restricted area, special monitoring is required, and the dam toe area of the gravity dam is considered to be easy to have abnormal problems such as stress strain, if abnormal conditions are not mastered in time, serious safety accidents can occur, and the dam toe area is also an important hidden danger to be monitored, the area to be detected is locked to be the whole area of the dam toe, the total number of the area to be detected is 4 through monitoring and layout requirements, the total required hydraulic Cheng Yinbi restricted area polarization maintaining fiber multi-purpose intelligent sensing systems is required, the length of polarization maintaining fiber in each sensing system is 4m, the length of common sensing fiber is 5km, and further the range between the first locking connecting platform 201 and the middle connecting platform 203 at the position to be monitored is determined to be +/-4 cm, and the range between the first locking connecting platform 204 and the middle connecting platform 203 is determined to be +/-4 cm.
In this embodiment, the hydraulic Cheng Yinbi limited area polarization maintaining fiber multi-purpose intelligent sensing system includes a polarization maintaining fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module, and a track diversion module.
The polarization maintaining fiber touch guide module comprises a first polarization maintaining fiber touch guide component, a corresponding first upper fiber control rod 110, a corresponding second polarization maintaining fiber touch guide component, a corresponding first lower fiber control rod 113, a corresponding third polarization maintaining fiber touch guide component, a corresponding second left fiber control rod 305, a corresponding fourth polarization maintaining fiber touch guide component, and a corresponding second right fiber control rod 306.
The first polarization-maintaining optical fiber touch-guide assembly comprises an inverted cone triangle 101, a bottom protection body 102, a first uploading connecting rod 103, a first upper force rail 104, a first upper control guide block 105, a first upper blocking card 106, a first upper breaking card 107, a first upper magnetic reserved area 108 and a first upper magnetic control body 109.
The length of the first uploading connecting rod 103 is 15cm, the bottom protection body 102 and the inverted cone triangle 101 are of hard steel structures, the first upper control guide block 105 is a cube with the length of 5cm multiplied by 5cm, the first upper force rail 104 is a cavity with the length of 20cm, the distance between the first upper blocking card 106 and the first upper breaking card 107 is kept between 2cm and 3cm, the first upper magnetic reserved area 108 is kept blank according to the characteristic that the requirement on the stress strain monitoring sensitivity of a dam toe area is high at this time, the width of the first upper magnetic control body 109 is compressed, the width of the first upper magnetic control body 109 is set to be 2cm, and the length of the first upper control fiber rod 110 is set to be 8cm.
The second polarization-maintaining fiber touch-guide assembly comprises an inverted cone triangle 101, a bottom protection body 102, a first lower transmission connecting rod 112, a first lower force rail 111, a first lower control guide block 114, a first lower blocking card 115, a first lower breaking card 116, a first lower magnetic reserved area 118 and a first lower magnetic control body 117. The first lower transmission connecting rod 112 with the length of 15cm is assembled, the bottom guard body 102 and the inverted cone triangle 101 are of a hard steel structure, the first lower control guide block 114 is a cube with the length of 5cm multiplied by 5cm, the first lower force rail 111 is a cavity with the length of 20cm, the distance between the first lower blocking card 115 and the first lower breaking card 116 is kept between 2cm and 3cm, the first lower magnetic reserved area 118 is kept blank according to the characteristic that the stress-strain monitoring sensitivity requirement on a dam toe area is higher at this time, the width of the first lower magnetic control body 117 is compressed, the width of the first lower magnetic control body is set to be 2cm, and the length of the first lower control fiber rod 113 is set to be 8cm.
The third polarization-maintaining optical fiber touch-guide assembly comprises an inverted cone triangle 101, a bottom protection body 102, a second left transmission connecting rod 312, a second left force rail 319, a second left control guide block 307, a second left blocking card 308, a second left breaking card 309, a second left magnetic reserved area 310 and a second left magnetic control body 311; the second left control guide block 307 is a cube of 5cm×5cm, the second left force rail 319 is a cavity of 20cm length, the distance between the second left blocking card 308 and the second left breaking card 309 is kept between 2cm and 3cm, the second left magnetic reserved area 310 is kept blank according to the characteristic that the requirement of the stress-strain monitoring sensitivity on the dam toe area is high, the width of the second left magnetic control body 311 is compressed, the width of the second left magnetic control body is set to be 2cm, and the length of the second left control fiber rod 305 is set to be 8cm.
The fourth polarization-maintaining optical fiber touch-guiding component comprises an inverted cone triangle 101, a bottom protection body 102, a second right transmission connecting rod 318, a second right force rail 3, a second right control guide block 313, a second right blocking card 314, a second right breaking card 315, a second right magnetic reserved area 316 and a second right magnetic control body 317; the second right control guide block 313 is a cube of 5cm×5cm, the second right force rail 320 is a cavity of 20cm length, the distance between the second right blocking card 314 and the second right breaking card 315 is kept between 2cm and 3cm, the second right magnetic reserved area 316 is kept blank according to the characteristic that the requirement of the stress-strain monitoring sensitivity on the dam toe area is high, the width of the second right magnetic control body 317 is compressed, the width is set to be 2cm, and the length of the second right control fiber rod 306 is set to be 8cm.
The lock control module comprises a first upper lock connecting table 201, a first lower lock connecting table 204, a second left lock connecting table 304 and a second right lock connecting table 321; the length of the first locking connection table 201, the first locking connection table 204 and the middle connection table 203 crossing the polarization maintaining optical fiber is 8cm, and the through connection channel 401 is made into a soft non-fixed structure, and the inner diameter of the soft non-fixed structure is 1cm.
The length of the second left locking connecting table 304, the second right locking connecting table 321 and the electrodeless control block 302 crossing the polarization maintaining optical fiber is 8cm.
The direction control module comprises an electrodeless control block 302, a stepless connecting rod 301, a middle connecting table 203 and a clamping groove 601; the width of the left side and the right side of the perch 606 is narrowed, the front side and the rear side are pointed ends, and the structure is a tuna-like structure, so that perch operation in water is convenient; as shown in fig. 6, the first middle connecting table 203 is located at the upper end of the stepless control block 302, and is connected in a staggered manner, the middle connecting structure is a stepless connecting rod 301, the stepless control block 302 can rotate around the stepless connecting rod 301 in a 360-degree randomization manner, damping materials with fixed coefficients are set between the stepless control block 302 and the stepless connecting rod 301, disordered random fluctuation of the stepless control block caused by micro disturbance of a structure body is reduced, and multidimensional space three-dimensional universalization dead-angle-free sensing of a part to be detected is realized.
The magnetization module comprises an upper main direction magnetic control block 602, a lower main direction magnetic control block 603, a forward floating body 604 and a floating body port 605; the top surface of the forward floating body 604 is lower than the normal plane of the amphibious body 606, the forward floating body 604 is vacuumized through the floating body port 605, the floating capacity of the perch body 606 in autonomous running in water is improved, and the perch body 606 is fixed at a metal structure of a concealed limited area to be detected through the actions of the upper main magnetic control block 602 and the lower main magnetic control block 603, so that autonomous monitoring of the concealed limited area of the hydraulic power Cheng Daice is realized.
As shown in fig. 4, the light channel diversion module 501 comprises a swivel 515, a swivel ring 513 and an inner through slit 514; the light channel diversion module 501 can be connected with a polarization maintaining optical fiber and a common sensing optical fiber, the rotating ring 513 can drive the inner transparent slit 514 to rotate 360 degrees around the rotating ball 515, and the inner transparent slit 514 can prevent the incidence of large-flux space light from interfering the light transmission at the joint.
The optical channel diversion module 501 further comprises a special light input/output end 502, a rear fixing body 504, a rear rotation slit 505, a rear vacuum cavity 506, a rear blocking body 507, an optical channel, a front blocking body 509, a front rotation slit 510, a front vacuum cavity 511, a front fixing body 512, and a normal light input/output end 503. The laser in the waveguide enters the front vacuum cavity 511 at the front fixed body 512 after passing through the common light in-out end 503, and the laser can only enter the front blocking body 509 through the front rotating slit 510 by rotating the front rotating slit 510, the pressed laser enters the rear blocking body 507 through a light channel with a certain length to wait for the opening of the rear rotating slit 505, and after the rear rotating slit 505 is opened, the laser passes through the rear vacuum cavity 506 on the rear fixed body 504, so that the laser only passes through the front rotating slit 510 consistent with the rear rotating slit 505 and is output through the special light in-out end 50.
The polarization maintaining optical fiber includes a first polarization maintaining optical fiber 202 and a second polarization maintaining optical fiber 303, and the second polarization maintaining optical fiber 303 is connected to the first polarization maintaining optical fiber 202 through a through-channel 401.
The optical module comprises a polarization laser table 403 and a polarization maintaining optical fiber polarization interpretation table 402; the polarization maintaining fiber polarization interpretation stage 402 is connected to the second polarization maintaining fiber 303 through the channel diversion module 501, and the first polarization maintaining fiber 202 is connected to the polarization laser stage 403 through the channel diversion module 501.
The first polarization-maintaining optical fiber touch-guiding component, the second polarization-maintaining optical fiber touch-guiding component, the third polarization-maintaining optical fiber touch-guiding component and the fourth polarization-maintaining optical fiber touch-guiding component are connected with a lock control module through a corresponding first upper fiber control rod 110, a corresponding first lower fiber control rod 113, a corresponding second left fiber control rod 305 and a corresponding second right fiber control rod 306, the lock control module is connected with a direction control module through a first polarization-maintaining optical fiber 202 and a corresponding second polarization-maintaining optical fiber 303, the direction control module is connected with a magnetization module through a perching body 606, and the magnetization module is connected with the optical module through a light channel diversion module 501.
The bottom protector 102 and the reverse taper triangle 101 are jointly acted and distributed in four directions of the perch body 606, so that stress strain information of a dam toe area under the gravity dam is effectively transmitted to the first polarization maintaining optical fiber touch guide component, the second polarization maintaining optical fiber touch guide component, the third polarization maintaining optical fiber touch guide component and the fourth polarization maintaining optical fiber touch guide component respectively through the first uploading connecting rod 103, the first downloading connecting rod 112, the second left transmission connecting rod 312, the first downloading control guide block 105, the first downloading control guide block 114, the second left control guide block 307 and the second right control guide block 313, and the first uploading connecting rod 103, the first downloading force rail 111, the second left force rail 319 and the second right force rail are driven by the second right transmission connecting rod 318 to carry out four-way self-adaptive movement, the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307 and the second right control guide block 313 pull the first upper locking connecting table 201, the first lower locking connecting table 204, the second left locking connecting table 304 and the second right locking connecting table 321 to realize the dynamic real-time sensing of the sectional tension-compression self-adaptive multi-directional polarization maintaining fiber under the inertial guidance of the first upper control fiber rod 110, the first lower control fiber rod 113, the second left control fiber rod 305 and the second right control fiber rod 306.
As shown in fig. 3, taking the first polarization maintaining optical fiber touch-sensitive component as an example, the first polarization maintaining optical fiber touch-sensitive component further includes a rotation point 135, wherein the rotation point 135 is a rotation point that the first upper blocking card 106 can rotate around the rotation point 135, so that the first upper control guide block 105 breaks through the blocking of the first upper blocking card 106 and reaches the first upper blocking card 107, when the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307 and the second right control guide block 313 operate in a direction away from the outer edge of the perch 606, the blocking property of the first upper blocking card 106, the first lower blocking card 115, the second left blocking card 308 and the second right blocking card 314 is triggered, the blocking capacity of the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307 and the second right control guide block 313 is acted on by the first upper transmission link 103, the first lower transmission link 112, the second left transmission link 312 and the second right transmission link 318 is acted over the blocking capacity of the first upper blocking card 106, the first lower blocking card 115, the second left blocking card 308 and the second right blocking card 314, the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307 and the second right control guide block 313 enter into the blank areas at the front ends of the first upper break card 107, the first lower break card 116, the second left break card 309 and the second right break card 315, so as to fully ensure the effective monitoring of the polarization-maintaining optical fiber and prevent overload, the maximum area ranges which can be reached by the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307 and the second right control guide block 313 are respectively the positions of the first upper break card 107, the first lower break card 116, the second left break card 309 and the second right break card 315, the positions of the first upper break card 106, the first lower break card 115, the second left break card 308 and the second right break card 314 are kept in a zero state of just stretching and not relaxing with the positions of the first upper locking station 201, the first lower locking station 204, the second left locking station 304 and the second right locking station, the first upper breaking card 107, the first lower breaking card 116, the second left breaking card 309 and the second right breaking card 315 are respectively located at positions lower than the positions of the first upper breaking card 106, the first lower breaking card 115, the second left breaking card 308 and the second right breaking card 314, so that sufficient pulling and pressing space is ensured, and the influence of disturbance on the polarization-maintaining optical fiber caused by micro dynamic vibration of a structure to be tested is reduced by controlling the sizes of the capacities of the first upper magnetic control body 109, the first lower magnetic control body 117, the second left magnetic control body 311 and the second right magnetic control body 317 in the lower positions of the first upper magnetic retention area 108, the first lower magnetic retention area 118, the second left magnetic retention area 310 and the second right magnetic retention area 316, wherein the capacities of the first upper resistance connecting rod 103 (a resistance force before the first lower resistance connecting rod 112, the second left resistance connecting rod 312 and the second right resistance connecting rod 318 are not contacted with the first upper resistance card 107) along the outer edge direction of the polyhedron 606.
The optical channel transfer module 501 connects the polarization maintaining optical fiber with the common sensing optical fiber with 5km length, the polarization maintaining optical fiber is anticlockwise connected with the first lower locking connecting table 204, the middle connecting table 203, the first upper locking connecting table 201, the through channel 401, the second left locking connecting table 304, the electrodeless control block 302 and the second right locking connecting table 321, positioning, labeling and fixing work on the first lower locking connecting table 204, the middle connecting table 203, the first upper locking connecting table 201, the second left locking connecting table 304, the electrodeless control block 302 and the second right locking connecting table 321 is completed, the first polarization maintaining optical fiber 202 is connected with the optical channel transfer module 501 on one side of the polarization laser table 403, the other end of the optical channel transfer module 501 on one side of the polarization maintaining optical fiber 403 is connected with the common sensing optical fiber, the second polarization maintaining optical fiber 303 is connected with the optical channel transfer module 501 on one side of the polarization maintaining optical fiber polarization interpretation table 402, and the other end of the optical channel transfer module 501 on one side of the polarization maintaining optical fiber polarization interpretation table 402 is connected with the common sensing optical fiber.
The polarization laser table 403 and the polarization maintaining fiber polarization interpretation table 402 are opened, the first polarization maintaining fiber 202 and the second polarization maintaining fiber 303 are connected, the polarization maintaining fibers between the first upper locking connecting table 201 and the middle connecting table 203, between the middle connecting table 203 and the first lower locking connecting table 204, between the second left locking connecting table 304 and the middle connecting table 203, between the middle connecting table 203 and the second right locking connecting table 321 and between the second left locking connecting table 304 and the inside of the through passage are tested, the polarization maintaining fibers at all parts are ensured to normally operate, further information is acquired, whether the stress strain at the dam toe exceeds the bearable value is judged, whether diseases exist or not is judged, and whether early warning and maintenance are needed or not is judged, so that the using process of the device is comprehensively completed.
A sensing method of a polarization maintaining fiber multi-purpose intelligent sensing system according to a hydraulic Cheng Yinbi limited area comprises the following steps:
the first step, determining a monitoring range and area, locking a target to be detected, determining whether to increase sensitization or decrease sensitization sensing process according to the size of the target to be detected affected by the outside, and determining a macroscopic range, thereby locking the lengths of the first upper force rail 104, the first lower force rail 111, the second left force rail 319 and the second right force rail 320;
and in the second step, the polarization maintaining optical fibers are connected along the first lower locking connecting table 204, the middle connecting table 203, the first upper locking connecting table 201, the through channel 401, the second left locking connecting table 304, the electrodeless control block 302 and the second right locking connecting table 321 anticlockwise, so that the positioning, labeling and fixing work on the first lower locking connecting table 204, the middle connecting table 203, the first upper locking connecting table 201, the second left locking connecting table 304, the electrodeless control block 302 and the second right locking connecting table 321 is completed.
And thirdly, configuring a polarization maintaining optical fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module and a light channel diversion module, completing the combined configuration of the structure, and determining the angle relation between the electrodeless control block 302 and the intermediate connecting table 203 through a target to be monitored.
Fourth, it is determined whether the first upper magnetic latching region 108, the first lower magnetic latching region 118, the second left magnetic latching region 310, and the second right magnetic latching region 316 are empty and whether the first upper magnetic control body 109, the first lower magnetic control body 117, the second left magnetic control body 311, and the second right magnetic control body 317 are complemented, thereby completing the magnetic control procedure for the first upper control guide block 105, the first lower control guide block 114, the second left control guide block 307, and the second right control guide block 313.
Fifthly, according to the characteristics of the hidden restricted area of the water engineering, the front floating body 604, the lower main magnetic control block 603 and the upper main magnetic control block 602 are fixed in advance or selected through the clamping groove 601, and the inverted cone triangle 101 on the bottom protection body 102 is effectively connected with the restricted area of the water engineering Cheng Yinbi in the construction period.
In the sixth step, the first polarization maintaining fiber 202 is connected to the channel diversion module 501 on the side of the polarization laser table 403, the normal sensing fiber is connected to the channel diversion module 501 on the side of the polarization laser table 403 through the other end of the channel diversion module 501 on the side of the polarization laser table 403, the second polarization maintaining fiber 303 is connected to the channel diversion module 501 on the side of the polarization maintaining fiber polarization interpretation table 402, the other end of the channel diversion module 501 on the side of the polarization maintaining fiber polarization interpretation table 402 is connected to the normal sensing fiber, and the length of the normal sensing fiber is determined based on whether remote monitoring is performed.
Seventh, the polarization laser table 403 and the polarization maintaining fiber polarization interpretation table 402 are opened, the first polarization maintaining fiber 202 and the second polarization maintaining fiber 303 are connected, the first upper locking connecting table and the middle connecting table 203, the middle connecting table 203 and the first lower locking connecting table 201, the second left locking connecting table 304 and the middle connecting table 203, the middle connecting table 203 and the second right locking connecting table 321 and the polarization maintaining fiber at each position inside the through channel 401 are tested, normal operation of the polarization maintaining fiber at each position is ensured, and sensing is completed.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (9)
1. A hydraulic Cheng Yinbi restricted area polarization-maintaining optical fiber amphibious intelligent sensing system comprises a polarization-maintaining optical fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module, a light channel diversion module, a polarization-maintaining optical fiber and a perch body;
the polarization maintaining optical fiber touch guide module comprises a first polarization maintaining optical fiber touch guide assembly, a first upper optical fiber rod, a second polarization maintaining optical fiber touch guide assembly, a first lower optical fiber rod, a third polarization maintaining optical fiber touch guide assembly, a second left optical fiber rod, a fourth polarization maintaining optical fiber touch guide assembly and a second right optical fiber rod;
the first polarization-maintaining optical fiber touch guide assembly comprises an inverted cone triangle, a bottom protection body, a first uploading connecting rod, a first upper force rail and a first upper control guide block;
the second polarization maintaining optical fiber touch guide assembly comprises an inverted cone triangle, a bottom protection body, a first lower transmission connecting rod, a first lower force rail and a first lower control guide block;
the third polarization maintaining optical fiber touch guide assembly comprises an inverted cone triangle, a bottom protection body, a second left transmission connecting rod, a second left force rail and a second left control guide block;
the fourth polarization-maintaining optical fiber touch guide assembly comprises an inverted cone triangle, a bottom protection body, a second right transmission connecting rod, a second right force rail and a second right control guide block;
the bottom protection bodies and the inverted cone triangles corresponding to the first polarization-maintaining optical fiber touch guide assembly, the second polarization-maintaining optical fiber touch guide assembly, the third polarization-maintaining optical fiber touch guide assembly and the fourth polarization-maintaining optical fiber touch guide assembly are arranged in four directions of the perch body;
the lock control module comprises a first upper lock connecting table, a first lower lock connecting table, a second left lock connecting table and a second right lock connecting table;
the polarization maintaining optical fiber comprises a first polarization maintaining optical fiber and a second polarization maintaining optical fiber;
the first polarization maintaining optical fiber touch guide assembly, the second polarization maintaining optical fiber touch guide assembly, the third polarization maintaining optical fiber touch guide assembly and the fourth polarization maintaining optical fiber touch guide assembly are connected with the lock control module through corresponding first upper control fiber rods, first lower control fiber rods, second left control fiber rods and second right control fiber rods respectively;
the lock control module is connected with the direction control module through a first polarization maintaining optical fiber and a second polarization maintaining optical fiber;
the direction control module is connected with the magnetization module through a perch;
the magnetization module is connected with the optical module through the optical channel diversion module;
the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block are driven by the corresponding first uploading connecting rod, the first lower connecting rod, the second left transmission connecting rod and the second right transmission connecting rod to move along the corresponding first upper force rail, the first lower force rail, the second left force rail and the second right force rail respectively; the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block are used for guiding downwards through the control of the first upper control fiber rod, the first lower control fiber rod, the second left control fiber rod and the second right control fiber rod, and the first upper locking connecting table, the first lower locking connecting table, the second left locking connecting table and the second right locking connecting table are pulled to realize sectional tension-compression self-adaptive multidirectional dynamic real-time sensing on polarization-maintaining fibers.
2. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 1, wherein:
the first polarization-maintaining optical fiber touch guide assembly further comprises a first upper blocking card, a first upper breaking card, a first upper magnetic reserved area and a first upper magnetic control body;
the second polarization maintaining optical fiber touch guide assembly further comprises a first lower blocking card, a first lower breaking card, a first lower magnetic reserved area and a first lower magnetic control body;
the third polarization maintaining optical fiber touch guide assembly further comprises a second left blocking card, a second left breaking card, a second left magnetic reserved area and a second left magnetic control body;
the fourth polarization maintaining optical fiber touch guide assembly further comprises a second right blocking card, a second right breaking card, a second right magnetic reserved area and a second right magnetic control body;
when the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block operate in the direction away from the outer periphery of the perching body, the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block are subjected to the actions of the first upper transmission connecting rod, the first lower transmission connecting rod, the second left transmission connecting rod and the second right transmission connecting rod to exceed the blocking actions of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card, and the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block enter into the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card.
3. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 2, wherein:
the positions of the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card are respectively leveled with the positions of the first upper locking connecting table, the first lower locking connecting table, the second left locking connecting table and the second right locking connecting table;
the first upper broken card, the first lower broken card, the second left broken card and the second right broken card are respectively positioned at a position lower than the first upper blocking card, the first lower blocking card, the second left blocking card and the second right blocking card.
4. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 1, wherein:
the direction control module comprises an electrodeless control block, an stepless connecting rod, a middle connecting table and a clamping groove;
the two ends of the stepless connecting rod are respectively connected with the middle connecting table and the stepless control block; the middle connecting table is positioned at the upper end of the stepless control block and is connected with the stepless control block in a staggered manner; the stepless control block can rotate 360 degrees around the stepless connecting rod;
damping materials with fixed coefficients are arranged between the stepless control blocks and the stepless connecting rods.
5. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 1, wherein:
the magnetization module comprises a forward floating body, an upper main magnetic control block and a lower main magnetic control block, wherein the upper main magnetic control block and the lower main magnetic control block are used for fixing the polypody at a metal structure of a concealed limited area;
the top surface of the forward floating body is lower than the normal plane of the polypody, and a floating body port for vacuumizing is arranged on the forward floating body.
6. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 1, wherein:
the light channel diversion module comprises a swivel ball, a swivel ring and an inner transmission slit for preventing large-flux space light incidence from interfering with light transmission at the joint;
the light channel diversion module is used for connecting the polarization maintaining optical fiber with the common sensing optical fiber; the inner through seam rotates 360 degrees around the ball under the drive of the rotating ring;
the second polarization maintaining optical fiber is connected through the first polarization maintaining optical fiber of the through-connection channel.
7. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 6, wherein:
the optical module comprises a polarization laser table and a polarization maintaining optical fiber polarization interpretation table;
the polarization maintaining optical fiber polarization interpretation platform is connected with the second polarization maintaining optical fiber through the light channel diversion module, and the first polarization maintaining optical fiber is connected with the polarization laser platform through the light channel diversion module.
8. The hydraulic Cheng Yinbi limited area polarization maintaining fiber-optic amphibious intelligent sensing system according to claim 1, wherein:
the width of the left side and the right side of the polypody is narrowed, and the front side and the rear side are pointed ends.
9. The sensing method of the hydraulic Cheng Yinbi limited area polarization maintaining fiber optic amphibious intelligent sensing system according to any one of claims 1 to 8, wherein the sensing method comprises the steps of:
the method comprises the steps of firstly, determining a monitoring range and a monitoring area, locking a target to be detected, determining whether a sensitization sensing process or a sensitization sensing process is carried out by the size of the target to be detected influenced by the outside, determining a macroscopic range, and locking the lengths of a first upper force rail, a first lower force rail, a second left force rail and a second right force rail;
the second step, the polarization maintaining optical fiber is connected along the first lower locking connecting table, the middle connecting table, the first upper locking connecting table, the through channel, the second left locking connecting table, the electrodeless control block and the second right locking connecting table anticlockwise, and the positioning, marking and fixing work on the first lower locking connecting table, the middle connecting table, the first upper locking connecting table, the second left locking connecting table, the electrodeless control block and the second right locking connecting table is completed;
thirdly, configuring a polarization maintaining optical fiber touch module, a lock control module, a direction control module, a magnetization module, an optical module and a light channel diversion module, completing the combined configuration of the structure, and determining the angle relation between the electrodeless control block and the middle connecting platform through a target to be monitored;
determining whether the first upper magnetic reserved area, the first lower magnetic reserved area, the second left magnetic reserved area and the second right magnetic reserved area are empty and whether the first upper magnetic control body, the first lower magnetic control body, the second left magnetic control body and the second right magnetic control body are subjected to bit supplementing, so as to complete magnetic control programs of the first upper control guide block, the first lower control guide block, the second left control guide block and the second right control guide block;
fifthly, according to the characteristics of a hidden limited area of a water project, the self-fixing of a forward floating body, a lower main magnetic control block and an upper main magnetic control block is determined or selected in advance through a clamping groove, and an inverted cone triangle on a bottom protection body is effectively connected with a limited area of a water project Cheng Yinbi in a construction period;
a sixth step of connecting a first polarization maintaining optical fiber to a channel diversion module at one side of the polarization laser table, connecting a common sensing optical fiber through the other end of the channel diversion module at one side of the polarization laser table, connecting a second polarization maintaining optical fiber to the channel diversion module at one side of the polarization maintaining optical fiber polarization interpretation table, connecting the other end of the channel diversion module at one side of the polarization maintaining optical fiber polarization interpretation table to the common sensing optical fiber, and determining the length of the common sensing optical fiber based on whether remote monitoring is performed;
seventh, opening the polarization laser table and the polarization maintaining optical fiber polarization interpretation table, connecting the first polarization maintaining optical fiber and the second polarization maintaining optical fiber, testing the polarization maintaining optical fibers at all positions in the first upper locking connecting table and the middle connecting table, the middle connecting table and the first lower locking connecting table, the second left locking connecting table and the middle connecting table, the middle connecting table and the second right locking connecting table and the through connecting channel, ensuring that the polarization maintaining optical fibers at all positions run normally, and finishing sensing.
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