CN210664344U - Building structure health monitoring system based on fiber grating sensor - Google Patents
Building structure health monitoring system based on fiber grating sensor Download PDFInfo
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- CN210664344U CN210664344U CN201921605307.9U CN201921605307U CN210664344U CN 210664344 U CN210664344 U CN 210664344U CN 201921605307 U CN201921605307 U CN 201921605307U CN 210664344 U CN210664344 U CN 210664344U
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Abstract
The utility model discloses a building structure health monitoring system based on fiber grating sensor, including high in the clouds server, data acquisition system, transmission module and real time monitoring system, data acquisition system includes a plurality of fiber grating sensor, a plurality of fiber grating demodulation appearance and collection host computer, a plurality of fiber grating sensor distributes and installs on building or around the building, the fiber grating sensor is connected with fiber grating demodulation appearance, a plurality of fiber grating demodulation appearance all is connected with the collection host computer, the collection host computer is connected with the high in the clouds server through transmission module, real time monitoring system is connected with the high in the clouds server through transmission module. The utility model discloses a health data acquisition of ancient building has realized the real time monitoring of ancient building health data, makes things convenient for the staff to know ancient building health status in real time.
Description
Technical Field
The utility model relates to an ancient building protection technical field especially relates to a building structure health monitoring system based on fiber grating sensor.
Background
China is a civilized ancient country with 5000 years of history, and compared with other ancient inventions in the world, the number and the current situation of the existing ancient buildings in China are worried. The history is found in the historic buildings recorded in the characters, the true remaining proportion is extremely low, and the history can be completely used up to now and is especially dignifiable. On the other hand, the historic building has significant cultural relic value, historical value and artistic value, and is a precious wealth for the nation and the nation. Therefore, how to effectively monitor and protect these ancient buildings becomes one of the important issues of the national cultural relic management department.
In recent years, with the progress of science and technology, the rising of fiber grating sensor monitoring technology and internet of things technology brings a technical breakthrough for the monitoring and maintenance of ancient buildings. For example, a method for monitoring the health of a building structure by using a distributed bare fiber grating disclosed in chinese patent document, which is disclosed in publication No. CN106918294A, published as 2017, 07, 04, includes selecting monitoring points on the surfaces of members of a building structure, setting an optical fiber arrangement path according to all the monitoring points, and arranging optical fibers on the optical fiber arrangement path; arranging a distributed bare fiber grating sensor on the optical fiber, wherein the distributed bare fiber grating sensor corresponds to the monitoring point; and forming a network by all the distributed bare fiber grating sensors, and sensing and recording the temperature and the strain change of the building structure through the distributed bare fiber grating sensors. The temperature and the strain change of the building structure are sensed and recorded through the distributed bare fiber grating sensor, but the displacement, the humidity and other changes of the building structure cannot be sensed, the sensing is not comprehensive enough, meanwhile, the real-time interaction with workers cannot be realized, and the real-time monitoring performance of the building structure is reduced.
Disclosure of Invention
The utility model mainly solves the problem that the prior art can not monitor the ancient building structure in real time; the utility model provides a building structure health monitoring system based on fiber grating sensor makes ancient building structure's displacement change, temperature variation, humidity change, change of strain, pressure variation obtain real-time supervision, makes things convenient for the staff to take measures in advance, effectively protects ancient building.
The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a building structure health monitoring system based on fiber grating sensor, includes high in the clouds server, data acquisition system, transmission module and real time monitoring system, data acquisition system includes a plurality of fiber grating sensor, a plurality of fiber grating demodulation appearance and collection host computer, a plurality of fiber grating sensor distributes and installs on building or around the building, the fiber grating sensor is used for gathering environmental parameter to export environmental parameter to fiber grating demodulation appearance, fiber grating demodulation appearance is used for enlargiing environmental parameter and converts the environmental parameter after will enlargiing into digital signal output to collection host computer, a plurality of fiber grating demodulation appearance all is connected with the collection host computer, the collection host computer is connected with the high in the clouds server through transmission module, real time monitoring system is connected with the high in the clouds server through transmission module. The fiber grating sensor collects environmental parameters of the historic building, the environmental parameters are transmitted to the grating demodulator, the grating demodulator converts the received environmental parameters into digital signals convenient to process, the digital signals are transmitted to the cloud server after the collection host is packaged, the cloud server transmits data to the real-time monitoring system, and workers check various health data of the historic building through watching the real-time monitoring system.
Preferably, the fiber grating sensor comprises a fiber grating displacement sensor, a fiber grating temperature sensor, a fiber grating humidity sensor, a fiber grating strain sensor, a fiber grating pressure sensor and a fiber grating infrared detector, the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are respectively installed on the surface, inside or around the building, and the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are all connected with a fiber grating demodulator. Set up a plurality of monitoring point around every ancient building, every monitoring point all is provided with fiber grating displacement sensor, fiber grating temperature sensor, fiber grating humidity transducer, fiber grating strain transducer, fiber grating pressure sensor and fiber grating infrared detector, monitors this ancient building's displacement change, temperature variation, humidity change, pressure variation and strain variation.
Preferably, the real-time monitoring system comprises a PC (personal computer) end monitoring system and a mobile end monitoring system, and the PC end monitoring system and the mobile end monitoring system are respectively connected with the cloud server through the transmission module. Through PC end monitored control system and removal end monitored control system, make things convenient for the staff to monitor whenever and wherever, further ensure the real-time of ancient building monitoring.
Preferably, the fiber grating demodulator comprises an adjustable F-P filter, an optical splitter, a power module, a photoelectric detector module, a data acquisition module, an amplification circuit module, an upper computer and a driving circuit module, wherein the adjustable F-P filter, the driving circuit module, the data acquisition module and the amplification circuit module are all connected with the power module, the photoelectric detector module, the amplification circuit module and the data acquisition module are all connected with the driving circuit module, the data acquisition module is connected with the upper computer, the input end of the optical splitter is connected with the adjustable F-P filter, the output end of the optical splitter is connected with the photoelectric detector module, the photoelectric detector module is connected with the amplification circuit module, and the amplification circuit module is connected with the data acquisition module. When different fiber grating sensors transmit information to a fiber grating demodulator, signals are filtered through an adjustable F-P filter, the filtered signals are classified through an optical splitter, the classified signals are converted into digital signals through a photoelectric detector module, the converted digital signals are amplified through an amplifying circuit module, signal characteristics are obvious, and the amplified digital signals are transmitted to an acquisition host through a data acquisition module.
Preferably, the fiber grating displacement sensor comprises a shell, a gear, a rack, a plurality of fiber gratings, a support plate, a rotating shaft, a measuring rod, a support rod and steel balls, wherein one end of the support plate is fixedly connected with the inner side wall of the shell, a groove is formed in the middle of the other end of the support plate, the rotating shaft is sleeved at the top end of the groove, the rotating shaft is connected with an eccentric point of the gear, the lower end of the gear is meshed with the rack rotatably connected to the support rod at the lower part of the shell, the rack is fixedly connected with one end of the measuring rod, the other end of the measuring rod penetrates through the side wall of the shell and is contacted with a measured building, the fiber gratings are symmetrically distributed on the upper surface and the lower surface of the support plate, and the steel balls. Through the structural change of being surveyed ancient building, drive the measuring stick and remove, the measuring stick removes and drives the rack displacement, and the rack drives gear revolve, and gear revolve makes fiber grating's wavelength produce the drift, realizes the perception to the ancient building displacement change.
Preferably, the lower part of the shell is provided with an inclined strut, the inclined plane of the inclined strut is provided with a sliding groove, and the steel ball is clamped in the sliding groove. When the fiber grating displacement sensor is used for measuring, the steel ball rolls along the sliding-out of the inclined strut, so that the displacement of the rack is facilitated, and after the measurement is finished, the steel ball rolls down from the inclined strut and returns to the original position, so that the fiber grating displacement sensor is reset, and the fiber grating displacement sensor is convenient to measure next time.
Preferably, the spring is further included, one end of the spring is connected with the inner wall of the shell, the other end of the spring is connected with the rack, a sliding groove is formed in the lower portion of the shell, and the steel balls are clamped in the sliding groove. After the fiber grating displacement sensor finishes measuring, the spring pushes the rack, and the steel ball slides out and rolls along the lower part of the shell, so that the fiber grating displacement sensor is reset.
Preferably, the transmission module comprises a wireless transmission module and a wired transmission module, and the wireless transmission module comprises a WIFI module or a Bluetooth module. Through multiple transmission module, prevent the unable timely condition of transmitting of information, ensured the promptness and the real-time of ancient building health information transmission.
The utility model has the advantages that: (1) sensing the displacement, temperature, humidity, strain and pressure of the historic building through a fiber bragg grating sensor to realize the health data acquisition of the historic building; (2) the real-time monitoring system is used for monitoring the health data of the historic building in real time, so that workers can know the health condition of the historic building in real time conveniently; (3) the information is transmitted through the wired or wireless transmission module, so that the condition that the information cannot be transmitted in time is prevented; (4) the fiber bragg grating displacement sensor is convenient to reset through the inclined strut or the spring of the shell of the fiber bragg grating displacement sensor.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring system according to a first embodiment.
Fig. 2 is a schematic structural diagram of the data acquisition system according to the first embodiment.
Fig. 3 is a schematic structural diagram of the fiber grating displacement sensor according to the first embodiment.
Fig. 4 is a schematic structural diagram of a fiber grating displacement sensor according to a second embodiment.
In the figure, 1, a fiber grating sensor, 2, an ancient building, 3, a fiber grating demodulator, 4, an acquisition host, 5, a cloud server, 6, a real-time monitoring system, 7, a PC (personal computer) end monitoring system, 8, a mobile end monitoring system, 9, a data acquisition system, 10, a shell, 11, a fiber grating, 12, a rotating shaft, 13, a gear, 14, a support plate, 15, a rack, 16, a measuring rod, 17, a support rod, 18, a steel ball, 19, an inclined strut, 20, a sliding groove and 21, and a spring.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
The first embodiment is as follows: a building structure health monitoring system based on fiber grating sensors is disclosed, as shown in figure 1, and comprises a cloud server 5, a data acquisition system 9, a transmission module and a real-time monitoring system 6, wherein the data acquisition system 9 comprises a plurality of fiber grating sensors 1, a plurality of fiber grating demodulators 3 and an acquisition host 4, the plurality of fiber grating sensors 1 are distributed and installed on a building or around the building, the fiber grating sensors 1 are used for acquiring environmental parameters and outputting the environmental parameters to the fiber grating demodulators 3, the fiber grating demodulators 3 are used for amplifying the environmental parameters and converting the amplified environmental parameters into digital signals to be output to the acquisition host 4, the plurality of fiber grating demodulators 3 are all connected with the acquisition host 4, the acquisition host 4 is connected with the cloud server 5 through the transmission module, the real-time monitoring system 6 is connected with the cloud server 5 through the transmission module, real-time monitoring system 6 includes PC end monitored control system 7 and removes end monitored control system 8, and PC end monitored control system 7 and remove end monitored control system 8 are connected with high in the clouds server 5 respectively through transmission module, and transmission module includes wireless transmission module and wired transmission module, and wireless transmission module includes WIFI module or bluetooth module.
As shown in fig. 2, the fiber grating sensor 1 includes a fiber grating displacement sensor, a fiber grating temperature sensor, a fiber grating humidity sensor, a fiber grating strain sensor, a fiber grating pressure sensor and a fiber grating infrared detector, the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are respectively installed on the surface, inside or around the building, and the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are all connected with the fiber grating demodulator 3; the fiber grating demodulator 3 comprises an adjustable F-P filter, an optical splitter, a power supply module, a photoelectric detector module, a data acquisition module, an amplification circuit module, an upper computer and a driving circuit module, wherein the adjustable F-P filter, the driving circuit module, the data acquisition module and the amplification circuit module are all connected with the power supply module, the photoelectric detector module, the amplification circuit module and the data acquisition module are all connected with the driving circuit module, the data acquisition module is connected with the upper computer, the input end of the optical splitter is connected with the adjustable F-P filter, the output end of the optical splitter is connected with the photoelectric detector module, the photoelectric detector module is connected with the amplification circuit module, and the amplification circuit module is connected with the data acquisition module.
As shown in fig. 3, the fiber grating displacement sensor includes a housing 10, a gear 13, a rack 15, a plurality of fiber gratings 11, a support plate 14, a rotating shaft 12, a measuring rod 16, a support rod 17 and steel balls 18, wherein one end of the support plate 14 is fixedly connected with the inner side wall of the housing 10, a groove is arranged in the middle of the other end of the support plate 14, the rotating shaft 12 is sleeved at the top end of the groove, the rotating shaft 12 is connected with an eccentric point of the gear 13, the lower end of the gear 13 is engaged with the rack 15 rotatably connected to the support rod 17 at the lower part of the housing 10, the rack 15 is fixedly connected with one end of the measuring rod 16, the other end of the measuring rod 16 penetrates through the side wall of the housing 10 and contacts with a building to be measured, the fiber gratings 11 are, the lower part of the shell 10 is abutted, the lower part of the shell 10 is provided with an inclined strut 19, the inclined plane of the inclined strut 19 is provided with a sliding groove 20, and the steel ball 18 is clamped in the sliding groove 20.
In the concrete application, when the ancient building 2 is displaced and changed, the fiber grating displacement sensor contacted with the ancient building 2 detects the ancient building 2, when the fiber grating displacement sensor detects the ancient building 2, the measuring rod 16 is abutted against the ancient building 2, the ancient building 2 is displaced and changed, the measuring rod 16 moves to drive the rack 15 to move, the steel ball 18 rolls to drive the supporting rod 17 and the rack 15 to move towards the inclined strut 19, the gear 13 meshed with the rack 15 rolls to drive the rotating shaft 12 to move, the rotating shaft 12 moves circularly along with the eccentric point of the gear 13, the supporting plate 14 connected with the rotating shaft 12 moves, the wavelength in the fiber grating 11 arranged on the supporting plate 14 drifts, the fiber grating 11 transmits the drifted wavelength to the fiber grating 11 demodulator 3, and the waves are converted into digital signals by the photoelectric detector module through the adjustable F-P filter and the optical divider, the digital signal after the conversion is through the amplified circuit module signal amplification, the signal after the amplification is transmitted for gathering host computer 4 through the data acquisition module, gather host computer 4 and transmit for high in the clouds server 5 through wireless transmission module or wired transmission module after with data packing, high in the clouds server 5 transmits data respectively for PC end monitored control system 7 and removal end monitored control system 8, after 2 displacement changes of ancient building, steel ball 18 rolls down from bracing 19, fiber grating displacement sensor's measuring stick 16 is pushed back the normal position by rack 15, fiber grating displacement sensor accomplishes and resets, utilize the roll of steel ball 18 on spout 20, the detection of displacement and the reset of fiber grating displacement sensor have been made things convenient for.
Example two: as shown in fig. 4, a building structure health monitoring system based on fiber grating sensor, the improvement of embodiment one is that the inclined strut 19 at the lower part of the fiber grating displacement sensor housing 10 is changed into the spring 21, one end of the spring 21 is connected with the inner wall of the housing 10, the other end of the spring 21 is connected with the rack 15, the lower part of the housing 10 is provided with the chute 20, the steel ball 18 is clamped in the chute 20, the fiber grating displacement sensor is reset by the elasticity of the spring 21, compared with embodiment one, after the rack 15 touches the inclined strut 19, the displacement of the ancient building 2 is not obvious, which causes the condition of unable detection, and the measurement reliability of the fiber grating displacement sensor is increased. The rest of the structure is the same as the first embodiment.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (8)
1. Building structure health monitoring system based on fiber grating sensor, including high in the clouds server, its characterized in that still includes
Data acquisition system, transmission module and real-time monitoring system, data acquisition system includes a plurality of fiber grating sensor, a plurality of fiber grating demodulation appearance and collection host computer, a plurality of fiber grating sensor distributes and installs on building or around the building, the fiber grating sensor is used for gathering environmental parameter to export environmental parameter to the fiber grating demodulation appearance, the fiber grating demodulation appearance is used for enlargiing environmental parameter and converts the environmental parameter after will enlargiing into digital signal output to the collection host computer, a plurality of the fiber grating demodulation appearance all is connected with the collection host computer, the collection host computer is connected with the high in the clouds server through transmission module, real-time monitoring system is connected with the high in the clouds server through transmission module.
2. The building structure health monitoring system based on fiber grating sensor as claimed in claim 1, it is characterized in that the fiber grating sensor comprises a fiber grating displacement sensor, a fiber grating temperature sensor, a fiber grating humidity sensor, a fiber grating strain sensor, a fiber grating pressure sensor and a fiber grating infrared detector, the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are respectively arranged on the surface, inside or around the building, the fiber grating displacement sensor, the fiber grating temperature sensor, the fiber grating humidity sensor, the fiber grating strain sensor, the fiber grating pressure sensor and the fiber grating infrared detector are all connected with the fiber grating demodulator.
3. The building structure health monitoring system based on the fiber bragg grating sensor as claimed in claim 1, wherein the real-time monitoring system comprises a PC-side monitoring system and a mobile-side monitoring system, and the PC-side monitoring system and the mobile-side monitoring system are respectively connected with the cloud server through a transmission module.
4. The building structure health monitoring system based on the fiber bragg grating sensor as claimed in claim 2, wherein the fiber bragg grating demodulator comprises an adjustable F-P filter, an optical splitter, a power supply module, a photoelectric detector module, a data acquisition module, an amplification circuit module, an upper computer and a driving circuit module, the adjustable F-P filter, the driving circuit module, the data acquisition module and the amplification circuit module are all connected with the power supply module, the photoelectric detector module, the amplification circuit module and the data acquisition module are all connected with the driving circuit module, the data acquisition module is connected with the upper computer, the input end of the optical splitter is connected with the adjustable F-P filter, the output end of the optical splitter is connected with the photoelectric detector module, and the photoelectric detector module is connected with the amplification circuit module, the amplifying circuit module is connected with the data acquisition module.
5. The building structure health monitoring system based on fiber grating sensor as claimed in claim 2, it is characterized in that the fiber grating displacement sensor comprises a shell, a gear, a rack, a plurality of fiber gratings, a bracket plate, a rotating shaft, a measuring rod, a supporting rod and a steel ball, one end of the support plate is fixedly connected with the inner side wall of the shell, a groove is arranged in the middle of the other end of the support plate, the rotating shaft is sleeved at the top end of the groove, the rotating shaft is connected with an eccentric point of the gear, the lower end of the gear is meshed with the rack which is rotatably connected on the supporting rod at the lower part of the shell, the rack is fixedly connected with one end of the measuring rod, the other end of the measuring rod penetrates through the side wall of the shell and is in contact with the building to be measured, the fiber bragg gratings are symmetrically distributed on the upper surface and the lower surface of the support plate, and the steel balls are rotatably mounted at the lower end of the supporting rod and are abutted against the lower part of the shell.
6. The building structure health monitoring system based on the fiber bragg grating sensor as claimed in claim 5, wherein an inclined strut is arranged at the lower part of the shell, a sliding groove is formed in an inclined surface of the inclined strut, and the steel ball is clamped in the sliding groove.
7. The building structure health monitoring system based on the fiber bragg grating sensor as claimed in claim 5, further comprising a spring, wherein one end of the spring is connected with the inner wall of the housing, the other end of the spring is connected with the rack, a sliding groove is formed in the lower portion of the housing, and the steel ball is clamped in the sliding groove.
8. The building structure health monitoring system based on the fiber bragg grating sensor as claimed in claim 1, wherein the transmission module comprises a wireless transmission module and a wired transmission module, and the wireless transmission module comprises a WIFI module or a Bluetooth module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184162A (en) * | 2021-12-09 | 2022-03-15 | 河北建筑工程学院 | Device and method for monitoring settlement of existing ground objects passing through tunnel |
| US11906182B2 (en) | 2021-04-02 | 2024-02-20 | Carrier Corporation | Scoring a building's atmospheric environment |
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2019
- 2019-09-25 CN CN201921605307.9U patent/CN210664344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11906182B2 (en) | 2021-04-02 | 2024-02-20 | Carrier Corporation | Scoring a building's atmospheric environment |
| CN114184162A (en) * | 2021-12-09 | 2022-03-15 | 河北建筑工程学院 | Device and method for monitoring settlement of existing ground objects passing through tunnel |
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