CN113108833B - Hydraulic support welding seam monitoring system and hydraulic support - Google Patents
Hydraulic support welding seam monitoring system and hydraulic support Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 74
- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 92
- 239000013307 optical fiber Substances 0.000 claims abstract description 20
- 239000010953 base metal Substances 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 4
- 238000011217 control strategy Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 6
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- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The application discloses monitoring system and hydraulic support of hydraulic support welding seam, this monitoring system includes: the system comprises a host, an optical fiber demodulator and an optical fiber grating sensor; the fiber bragg grating sensor comprises a fiber bragg grating deformation sensor and a fiber bragg grating temperature sensor, wherein the fiber bragg grating deformation sensor is in normal direction bridging connection with the hydraulic support base metal at two ends of the hydraulic support welding seam along the hydraulic support welding seam, and the fiber bragg grating temperature sensor is tangentially installed on the hydraulic support base metal at one side of the hydraulic support welding seam along the hydraulic support welding seam; the fiber bragg grating deformation sensor is used for acquiring first wavelength information of a hydraulic support welding seam; the fiber grating temperature sensor is used for acquiring second wavelength information of the hydraulic support welding seam; the optical fiber demodulator is used for demodulating the first wavelength information and the second wavelength information respectively to generate corresponding first target wavelength and second target wavelength; and the host is used for calculating the variable quantity of the hydraulic support welding seam according to the first target wavelength and the second target wavelength.
Description
Technical Field
The application relates to the technical field of hydraulic supports, in particular to a monitoring system for a hydraulic support welding seam and a hydraulic support.
Background
The hydraulic support is important supporting equipment in a coal face, the hydraulic support is large in size and multiple in structural parts, welding is more, the hydraulic support bears the pressure of a top plate in real time during working, a welding line is used as a weak link of the hydraulic support, and the conditions of welding breaking and the like are frequently caused.
At present, the monitoring of the welding seam of the underground hydraulic support is mainly observed by workers through eyes, and the workers can find the welding seam only when the welding seam is cracked and cracked greatly due to the fact that underground coal dust is large under the general condition.
Disclosure of Invention
The present application aims to solve at least to some extent one of the technical problems in the above-mentioned technology.
Therefore, the first aim at of this application provides a monitoring system of hydraulic support welding seam, can the deformation condition of real-time supervision hydraulic support welding seam to can provide the early warning for the fracture of hydraulic support welding seam, and then improve hydraulic support's security.
A second object of the present application is to propose a hydraulic mount.
In order to achieve the above object, an embodiment of the first aspect of the present application provides a system for monitoring a weld of a hydraulic support, including: the device comprises a host, an optical fiber demodulator and an optical fiber grating sensor, wherein the host is connected with the optical fiber demodulator, and the optical fiber demodulator is connected with the optical fiber grating sensor; the fiber bragg grating sensor comprises a fiber bragg grating deformation sensor and a fiber bragg grating temperature sensor, wherein the fiber bragg grating deformation sensor is in normal direction cross-connection with the hydraulic support base metal at two ends of the hydraulic support welding seam along the hydraulic support welding seam, and the fiber bragg grating temperature sensor is tangentially installed on the hydraulic support base metal at one side of the hydraulic support welding seam along the hydraulic support welding seam; the fiber bragg grating deformation sensor is used for acquiring first wavelength information of the hydraulic support welding seam; the fiber bragg grating temperature sensor is used for acquiring second wavelength information of the hydraulic support welding seam; the optical fiber demodulator is used for demodulating the first wavelength information and the second wavelength information respectively to generate a corresponding first target wavelength and a corresponding second target wavelength; and the host is used for calculating the variable quantity of the hydraulic support welding seam according to the first target wavelength and the second target wavelength.
The monitoring system of hydraulic support welding seam of this application embodiment, at first acquire the first wavelength information of hydraulic support welding seam through fiber grating deformation sensor to acquire the second wavelength information of hydraulic support welding seam through fiber grating temperature sensor, then demodulate first wavelength information and second wavelength information respectively through the fiber demodulation appearance, with first target wavelength and the second target wavelength that generates to correspond, according to first target wavelength and second target wavelength through the host computer at last, calculate the change volume of hydraulic support welding seam. Therefore, the deformation condition of the welding line of the hydraulic support can be monitored in real time, early warning can be provided for cracking of the welding line of the hydraulic support, and the safety of the hydraulic support is improved.
In addition, the monitoring system for the hydraulic bracket welding seam provided according to the embodiment of the application can also have the following additional technical characteristics:
in an embodiment of the present application, the host is specifically configured to: calculating a wavelength difference between the first target wavelength and the second target wavelength; and calculating the variable quantity of the hydraulic support welding line according to the wavelength difference.
In one embodiment of the present application, the host computer calculates the amount of change in the hydraulic mount weld by the following formula:
S＝(Δλ/λ 0 )×10 6 /F G ×L，
wherein S is the variable quantity of the hydraulic support welding seam, Delta lambda is the wavelength difference, lambda 0 Is the center wavelength, F, of the fiber grating sensor G And L is the grating coefficient of the fiber grating sensor, and L is the effective length of the fiber grating sensor.
In an embodiment of the application, the monitoring system for the hydraulic support welding seam further includes: the host is also connected with the data acquisition card, and the data acquisition card is connected with the hydraulic sensor; the hydraulic sensor is used for acquiring hydraulic information of the hydraulic support; the data acquisition card is used for processing the hydraulic information to generate target hydraulic data; and the host is also used for generating a control strategy of the hydraulic support according to the target hydraulic data and the variable quantity of the welding seam of the hydraulic support.
In one embodiment of the present application, the host is connected to the fiber demodulation instrument through a network cable; the host is connected with the data acquisition card through a Universal Serial Bus (USB); the optical fiber demodulator is connected with the fiber bragg grating sensor through an optical fiber; and the data acquisition card is connected with the hydraulic sensor through a differential signal line.
In an embodiment of the present application, the host includes a clock module, wherein the fiber demodulator and the data acquisition card implement data synchronization through the clock module.
In one embodiment of the present application, the sampling rate of the fiber-optic demodulator and the data acquisition card is 1 kHz.
In one embodiment of the present application, the fiber grating deformation sensor and the fiber grating temperature sensor are connected in series.
In one embodiment of the present application, the host includes one or more of a single chip microcomputer, a Micro Control Unit (MCU), and a microprocessor.
In order to achieve the above object, an embodiment of the second aspect of the present application provides a hydraulic bracket, including: the monitoring system of hydraulic support welding seam of this application first aspect embodiment.
The hydraulic support of this application embodiment, through the monitoring system of above-mentioned hydraulic support welding seam, can the deformation condition of real-time supervision hydraulic support welding seam to can provide the early warning for the fracture of hydraulic support welding seam, and then improve hydraulic support's security.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block schematic diagram of a hydraulic mount weld monitoring system according to one embodiment of the present invention;
FIG. 2 is a schematic view of a fiber grating sensor installation according to one embodiment of the present invention;
FIG. 3 is a block schematic diagram of a hydraulic mount weld monitoring system according to another embodiment of the present invention;
FIG. 4 is a block schematic diagram of a hydraulic mount weld monitoring system according to another embodiment of the present invention;
FIG. 5 is a block schematic diagram of a hydraulic mount weld monitoring system according to another embodiment of the present invention; and
FIG. 6 is a block schematic diagram of a hydraulic mount according to one embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The hydraulic support weld monitoring system and the hydraulic support of the embodiment of the application are described below with reference to the attached drawings.
FIG. 1 is a block schematic diagram of a hydraulic mount weld monitoring system according to one embodiment of the present invention.
As shown in fig. 1, a hydraulic bracket weld monitoring system 100 according to an embodiment of the present application may include: host 110, fiber demodulator 120, and fiber grating sensor 130.
The host 110 is connected to the fiber-optic demodulator 120, and the fiber-optic demodulator 120 is connected to the fiber-optic grating sensor 130. The fiber grating sensor 130 may include a fiber grating deformation sensor 131 and a fiber grating temperature sensor 132, wherein the fiber grating deformation sensor 131 is connected across the hydraulic support base metal at two ends of the hydraulic support weld along the hydraulic support weld in a normal manner, and the fiber grating temperature sensor 132 is installed on the hydraulic support base metal at one side of the hydraulic support weld along the hydraulic support weld in a tangential manner. The fiber grating deformation sensor 131 and the fiber grating temperature sensor 132 may be connected in series (that is, the fiber grating sensor 130 may be formed by connecting the fiber grating deformation sensor 131 and the fiber grating temperature sensor 132 in series), and the host 110 may include one or more of a single chip, a micro control unit MCU, and a microprocessor, which is not limited herein.
It should be noted that the fiber grating deformation sensor 131 and the fiber grating temperature sensor 132 described in the above embodiments may be welded to the hydraulic bracket base material by a spot welding machine.
Specifically, the fiber bragg grating deformation sensor 131 and the fiber bragg grating temperature sensor 132 (i.e., the fiber bragg grating sensor 130) are installed in a manner as shown in fig. 2, wherein the fiber bragg grating deformation sensor 131 is normally bridged on the hydraulic support base material 20 at two ends of the hydraulic support weld 10 along the hydraulic support weld 10 by a spot welding machine, and the fiber bragg grating temperature sensor 132 is tangentially installed on the hydraulic support base material 20 at one side of the hydraulic support weld 10 along the hydraulic support weld 10.
In this application embodiment, relevant staff can confirm the number of the (measured) welding seam that awaits measuring on the hydraulic support according to hydraulic support model, working face are decided, bottom plate condition and working face mine pressure etc to reach every position information (promptly, measuring point) that awaits measuring (measured) welding seam corresponds. That is to say, the number of hydraulic support welding seam (the welding seam that awaits measuring) in this application can be a plurality of, and every hydraulic support welding seam and the positional information who corresponds thereof all can be markd by relevant staff.
As a possible situation, the related staff may also determine the number of to-be-detected (detected) welds on the hydraulic support and the corresponding position information of each to-be-detected (detected) weld according to other parameters or in other manners. And are not limited in any way herein.
In the embodiment of the present application, after determining the number of to-be-detected (detected) welds on the hydraulic bracket and the position information corresponding to each to-be-detected (detected) weld, the relevant staff may select the fiber grating sensors 130 with appropriate wavelengths according to the number of to-be-detected (detected) welds, so as to avoid overlapping of the wavelengths, and connect each fiber grating sensor 130 in series. Then, the relevant worker can weld the selected fiber grating sensor 130 on the hydraulic bracket base material at the position of each weld to be measured (measured) by the spot welding machine.
It should be noted that, in the foregoing embodiment, selecting the fiber grating sensors 130 with appropriate wavelengths to avoid wavelength overlapping may refer to that the wavelengths of the fiber grating sensors 130 installed at the corresponding positions of the to-be-detected (detected) welds are different, so as to avoid wavelength overlapping and affecting signal analysis.
In the embodiment of the present application, the relevant staff may further establish a correspondence table between the wavelength of the fiber bragg grating sensor 130 installed at the corresponding position of each to-be-detected (detected) weld and the corresponding position information of each to-be-detected (detected) weld, and store the correspondence table in a storage space of the host 110, so as to facilitate the host 110 to fetch and use, where the storage space is not limited to a physical-based storage space, such as a hard disk, and the storage space may also be a storage space (cloud storage space) of a server connected to the host 100. Therefore, after obtaining the monitoring signal of the fiber grating sensor 130, the host 110 can quickly confirm that the monitoring signal is the monitoring signal of the hydraulic bracket weld according to the correspondence table.
The fiber bragg grating deformation sensor 131 is used for acquiring first wavelength information of a hydraulic support welding seam. The fiber grating temperature sensor 132 is used to obtain the second wavelength information of the hydraulic bracket weld. The fiber demodulator 120 is configured to demodulate the first wavelength information and the second wavelength information to generate corresponding first target wavelength and second target wavelength. The host 110 is configured to calculate a variation of the hydraulic mount weld based on the first target wavelength and the second target wavelength.
In one embodiment of the present application, host computer 110 is specifically configured to calculate a wavelength difference between a first target wavelength and a second target wavelength, and to calculate a variation of the hydraulic mount weld based on the wavelength difference. The host 110 may calculate the variation of the weld of the hydraulic bracket according to the following formula (1):
S＝(Δλ/λ 0 )×10 6 /F G ×L (1)
wherein S is the variation of the hydraulic support welding seam, Delta lambda is the wavelength difference, lambda 0 Is the center wavelength, F, of the fiber grating sensor G Is the grating coefficient of the fiber grating sensor, and L is the effective length of the fiber grating sensor.
Specifically, in the working process of the hydraulic support weld monitoring system, the fiber grating deformation sensor 131 in the fiber grating sensor 130 can acquire the first wavelength information of the hydraulic support weld in real time, and the fiber grating temperature sensor 132 in the fiber grating sensor 130 can acquire the second wavelength information of the hydraulic support weld in real time. The host 110 may control the fiber demodulator 120 to collect detection signals (i.e., the first wavelength information and the second wavelength information) of the fiber grating deformation sensor 131 and the fiber grating temperature sensor 132, respectively, and demodulate the detection signals to obtain the first target wavelength and the second target wavelength. Then, the host 110 may calculate a wavelength difference between the first target wavelength and the second target wavelength, and then calculate the variation of the hydraulic bracket weld according to the difference and based on the above formula (1). From this, this application can real-time supervision hydraulic support welding seam the deformation condition to can provide the early warning for the fracture of hydraulic support welding seam, and then improve hydraulic support's security.
It should be noted that the first wavelength information of the hydraulic support weld acquired by the fiber grating deformation sensor 131 in the above embodiment is a result of the joint deformation and the temperature change, and the second wavelength information of the hydraulic support weld acquired by the fiber grating temperature sensor 132 is only caused by the temperature change, so that the fiber wavelength displacement change caused by the hydraulic support weld deformation can be obtained by subtracting the signal (the second wavelength information) acquired by the fiber grating temperature sensor 132 from the signal (the first wavelength information) acquired by the fiber grating deformation sensor 131.
Further, in an embodiment of the present application, as shown in fig. 3, the monitoring system for the weld of the hydraulic bracket may further include: a data acquisition card 140 and a hydraulic sensor 150.
The host 110 is further connected to a data acquisition card 140, and the data acquisition card 140 is connected to the hydraulic sensor 150.
In one embodiment of the present application, as shown in fig. 4, the host 110 may be connected to the fiber-optic demodulator 120 through the network cable 30, the host 110 may be connected to the data acquisition card 140 through the USB40, the fiber-optic demodulator 120 may be connected to the fiber-optic grating sensor 130 through the optical fiber 50, and the data acquisition card 140 may be connected to the hydraulic pressure sensor 150 through the differential signal line 60.
In other embodiments of the present application, the host 110 may also be connected to the fiber-optic demodulator 120 via an optical fiber.
The hydraulic sensor 140 is used to obtain hydraulic information of the hydraulic support. The data acquisition card 150 is used for processing the hydraulic information to generate target hydraulic data. The host 110 is further configured to generate a control strategy for the hydraulic mount based on the target hydraulic data and the variation of the weld of the hydraulic mount.
Specifically, in the working process of the hydraulic support weld monitoring system of the present application, the hydraulic sensor 140 may acquire hydraulic information of the hydraulic support in real time, and the host 110 may control the data acquisition card 150 to acquire a detection signal (i.e., hydraulic information) of the hydraulic sensor 140 and convert the detection signal to obtain target hydraulic data, i.e., convert an electrical signal (hydraulic information) into a pressure signal (target hydraulic data). Then, the host 110 can generate the change situation of the hydraulic support weld joint under different working hydraulic pressures according to the target hydraulic data obtained in real time and the variable quantity of the hydraulic support weld joint, so that the hydraulic support working stability condition can be further analyzed, the service life of the hydraulic support can be predicted, and the like by combining the hydraulic data (target hydraulic data) monitored in real time.
It should be noted that the target hydraulic data obtained in real time in the above embodiments may be used to indicate the operating condition state of the hydraulic support.
Further, in an embodiment of the present application, as shown in fig. 5, the host 110 may include a clock module 111, wherein the fiber demodulator 120 and the data acquisition card 140 may achieve data synchronization through the clock module 110, and the sampling rate of the fiber demodulator 120 and the data acquisition card 140 may be 1 kHz.
Specifically, in the working process of the hydraulic bracket weld monitoring system of the present application, the host 110 may control the data acquisition card 140 and the fiber grating demodulator 120 through the internal clock module 110 to synchronously acquire the detection signal of the hydraulic sensor 140 and the detection signal of the fiber grating sensor 130 at a sampling rate of 1 kHz. After the host 110 obtains the first target wavelength and the second target wavelength generated by the demodulation of the fiber grating demodulator 120, the variation of the weld of the hydraulic support can be obtained by calculation according to the wavelength difference between the first target wavelength and the second target wavelength and the formula (1), and the variation of the weld of the hydraulic support under any working condition can be obtained by combining the target hydraulic data generated by the conversion of the data acquisition card 140 and obtained synchronously. Therefore, the deformation condition of the welding line of the hydraulic support can be monitored in real time, early warning can be provided for the cracking of the welding line of the hydraulic support, the safety of the hydraulic support is improved, and meanwhile, the stable condition of the work of the hydraulic support, the service life of the hydraulic support and the like can be further analyzed by combining with synchronously obtained target hydraulic data.
To sum up, the monitoring system of hydraulic support welding seam of this application embodiment, at first acquire the first wavelength information of hydraulic support welding seam through fiber grating deformation sensor to acquire the second wavelength information of hydraulic support welding seam through fiber grating temperature sensor, then demodulate first wavelength information and second wavelength information respectively through the fiber demodulation appearance, in order to generate corresponding first target wavelength and second target wavelength, finally calculate the change volume of hydraulic support welding seam according to first target wavelength and second target wavelength through the host computer. Therefore, the deformation condition of the welding line of the hydraulic support can be monitored in real time, early warning can be provided for cracking of the welding line of the hydraulic support, and the safety of the hydraulic support is improved.
In order to implement the above embodiment, the present invention further provides a hydraulic bracket 1000, as shown in fig. 6, which includes the above monitoring system 100 for a hydraulic bracket weld.
The hydraulic support of this application embodiment, through the monitoring system of above-mentioned hydraulic support welding seam, can the deformation condition of real-time supervision hydraulic support welding seam to can provide the early warning for the fracture of hydraulic support welding seam, and then improve hydraulic support's security.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (8)
1. A system for monitoring a weld of a hydraulic support, comprising: a host, a fiber-optic demodulator and a fiber-optic grating sensor, wherein,
the host is connected with the optical fiber demodulator, and the optical fiber demodulator is connected with the optical fiber grating sensor;
the fiber bragg grating sensor comprises a fiber bragg grating deformation sensor and a fiber bragg grating temperature sensor, wherein the fiber bragg grating deformation sensor is in normal direction cross-connection with the hydraulic support base metal at two ends of the hydraulic support welding seam along the hydraulic support welding seam, and the fiber bragg grating temperature sensor is tangentially installed on the hydraulic support base metal at one side of the hydraulic support welding seam along the hydraulic support welding seam;
the fiber bragg grating deformation sensor is used for acquiring first wavelength information of the hydraulic support welding seam;
the fiber bragg grating temperature sensor is used for acquiring second wavelength information of the hydraulic support welding seam;
the optical fiber demodulator is used for demodulating the first wavelength information and the second wavelength information respectively to generate a corresponding first target wavelength and a corresponding second target wavelength;
the host is used for calculating the variable quantity of the hydraulic support welding seam according to the first target wavelength and the second target wavelength; further comprising:
the host is also connected with the data acquisition card, and the data acquisition card is connected with the hydraulic sensor;
the hydraulic sensor is used for acquiring hydraulic information of the hydraulic support;
the data acquisition card is used for processing the hydraulic information to generate target hydraulic data;
and the host is also used for generating a control strategy of the hydraulic support according to the target hydraulic data and the variable quantity of the welding seam of the hydraulic support.
2. The system for monitoring a hydraulic mount weld of claim 1, wherein the host machine is specifically configured to:
calculating a wavelength difference between the first target wavelength and the second target wavelength;
and calculating the variable quantity of the hydraulic support welding line according to the wavelength difference.
3. The hydraulic mount weld monitoring system of claim 2, wherein the host machine calculates the amount of change in the hydraulic mount weld by the following equation:
S＝(Δλ/ λ 0 )×10 6 / F G ×L
wherein S is the variation of the hydraulic support weld, and Delta lambda is the wavelength difference, lambda 0 Is the center wavelength, F, of the fiber grating sensor G Is the grating coefficient of the fiber grating sensor, and L is the fiber grating sensorThe effective length of the device.
4. The system for monitoring the weld of the hydraulic bracket according to claim 1, wherein the host is connected with the optical fiber demodulator through a network cable;
the host is connected with the data acquisition card through a Universal Serial Bus (USB);
the optical fiber demodulator is connected with the fiber bragg grating sensor through an optical fiber;
and the data acquisition card is connected with the hydraulic sensor through a differential signal line.
5. The system for monitoring the weld joint of the hydraulic support according to claim 1, wherein the host comprises a clock module, and wherein the fiber demodulator and the data acquisition card achieve data synchronization through the clock module.
6. The system for monitoring the weld of the hydraulic bracket according to claim 5, wherein the sampling rate of the fiber-optic demodulator and the data acquisition card is 1 kHz.
7. The system for monitoring a hydraulic mount weld of claim 1, wherein the fiber grating deformation sensor and the fiber grating temperature sensor are connected in series.
8. A hydraulic mount comprising a monitoring system for a hydraulic mount weld according to any one of claims 1-7.
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| US5945666A (en) * | 1996-05-20 | 1999-08-31 | The United States Of America As Represented By The Secretary Of The Navy | Hybrid fiber bragg grating/long period fiber grating sensor for strain/temperature discrimination |
| CN101397903B (en) * | 2008-11-05 | 2012-08-29 | 大庆油田有限责任公司 | Method for monitoring sleeve circumferential strain by using optical fibre grating sensor |
| CN101830237B (en) * | 2010-01-20 | 2011-11-30 | 黑龙江大学 | Safe and real-time detection system and method of heavy haulage lines based on optical fiber sensor network |
| CN205779021U (en) * | 2016-05-25 | 2016-12-07 | 天津华宁电子有限公司 | Detecting system for mine hydraulic bracket |
| CN109556524A (en) * | 2018-12-21 | 2019-04-02 | 中国矿业大学 | Fracture width based on Fiber Bragg Grating technology monitors system and method |
| CN110553595A (en) * | 2019-07-24 | 2019-12-10 | 南昌工程学院 | Rhombic hanging basket construction monitoring method based on fiber bragg grating integration technology |
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| CN113108833A (en) | 2021-07-13 |
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