Photoelectric composite inclinometer and inclination measuring system
阅读说明:本技术 光电复合测斜仪及测斜系统 (Photoelectric composite inclinometer and inclination measuring system ) 是由 林健 朱佳佳 赵旭 李建平 焦宝文 王磊 潘泽华 文选跃 陈诗艾 刘小清 于 2019-11-27 设计创作,主要内容包括:本发明公开了一种光电复合测斜仪及测斜系统,该光电复合测斜仪包括:PVC管、柔性板、插头及密封盖,柔性板插入PVC管中,插头设置在所述PVC管的一端,密封盖设置在所述PVC管的另一端。柔性板沿其长度方向等间距交替设置有若干光纤光栅传感器和电阻传感器。有益效果:变形灵敏度高,测量精度高。不带电、体积小、重量轻、防水性能好且使用寿命长。该测斜系统包括:光分路器、解调仪、本地监控、上位服务器、远程终端、远程报警器及若干光电复合测斜仪。有益效果:可选择处理全光栅光纤传感器采集的数据,或者全电阻传感器采集的数据,或者同时处理光栅光纤传感器与电阻传感器采集的数据,使用灵活,可靠性高。(The invention discloses a photoelectric composite inclinometer and an inclinometry system, wherein the photoelectric composite inclinometer comprises: the PVC pipe comprises a PVC pipe, a flexible plate, a plug and a sealing cover, wherein the flexible plate is inserted into the PVC pipe, the plug is arranged at one end of the PVC pipe, and the sealing cover is arranged at the other end of the PVC pipe. The flexible board is alternately provided with a plurality of fiber bragg grating sensors and resistance sensors at equal intervals along the length direction of the flexible board. Has the advantages that: the deformation sensitivity is high, and the measurement accuracy is high. Uncharged, small in volume, light in weight, good in waterproof performance and long in service life. The inclinometer system comprises: the device comprises an optical splitter, a demodulator, a local monitor, an upper server, a remote terminal, a remote alarm and a plurality of photoelectric composite inclinometers. Has the advantages that: the data collected by the all-grating optical fiber sensor or the data collected by the full-resistance sensor can be selectively processed, or the data collected by the grating optical fiber sensor and the resistance sensor can be processed simultaneously, so that the use is flexible, and the reliability is high.)
1. A photoelectric composite inclinometer, characterized by comprising: the flexible plate is inserted into the PVC pipe, the plug is arranged at one end of the PVC pipe, and the sealing cover is arranged at the other end of the PVC pipe; the flexible plate is as long as the PVC pipe, a plurality of fiber grating sensors and resistance sensors are alternately arranged on the flexible plate at equal intervals along the length direction of the flexible plate, the fiber grating sensors are connected in series through optical fiber cables, and the resistance sensors are connected in series through 458 cables; the sealing cover is provided with a through hole, and the optical fiber cable and the 458 cable penetrate through the through hole to be connected with an external inclination measuring system through signals.
2. The photoelectric composite inclinometer of claim 1, wherein the inner wall of the PVC pipe is provided with at least one pair of clamping grooves along the length direction, each pair of clamping grooves is symmetrical about the center of the opening of the PVC pipe, and the flexible plate is inserted into the PVC pipe along one pair of clamping grooves.
3. The photoelectric composite inclinometer of claim 1, wherein the flexible plate is an epoxy plate, a phenolic plate, a carbon fiber plate or an bakelite plate.
4. The electro-optic compound inclinometer of claim 1, wherein the spacing between the fiber grating sensor and the resistance sensor is 0.25m or 0.5m or 1 m.
5. The electro-optic compound inclinometer of claim 1, wherein the plug is conical.
6. The optoelectric composite inclinometer of any one of claims 1 to 4, wherein a handle is provided on the sealing cover.
7. An inclinometer system, comprising: the system comprises an optical splitter, a demodulator, a local monitor, an upper server, a remote terminal, a remote alarm and a plurality of photoelectric composite inclinometers; the optical fiber cables of the photoelectric composite inclinometers are in signal connection with the optical splitters, the optical splitters are in signal connection with the demodulators, the demodulators are in signal connection with the upper server, and the upper server is in wireless connection with the remote terminal and the remote alarm; and 458 cables of the plurality of photoelectric composite inclinometers are directly connected with the local monitoring signals, and the local monitoring signals are connected with the demodulator.
Technical Field
The invention relates to the technical field of an inclinometer, in particular to a photoelectric composite inclinometer and an inclinometry system.
Background
In engineering practice and scientific research, displacement tilt monitoring needs to be carried out on a rock-soil body or an engineering structure at a certain depth below the ground, and the displacement inside the soil body is generally observed by adopting an inclinometer. Currently, the monitoring instruments which are applied more are inclinometers based on a micro electro mechanical system, including portable inclinometers and fixed inclinometers. The portable inclinometer is simple to operate, the technology is mature, but the measurement is completed by a manual operation instrument, the test efficiency is low, and effective real-time monitoring is difficult to realize especially in a steep slope with severe engineering conditions and inconvenient manual measurement. The fixed inclinometer can realize continuous and automatic measurement of slope displacement. However, in the existing fixed inclinometer, a micro-electromechanical sensor is mounted on a substrate (mostly 0.5m, 1m and the like) with different rigidity lengths, guide wheels are mounted in a matched manner, the fixed inclinometer is inserted into an inclinometer in a cascading manner, and then accumulated integration is carried out according to the distance between the guide wheels and the measured angle to obtain the change of an inclination angle so as to carry out inclination measurement. Because each inclinometer is rigid, the angle change between the two cascaded rigid substrates is conducted by the connecting component, the sensitivity is low, the actual deformation conditions of the measured rock soil and the like cannot be truly reflected, and the measurement precision is influenced. And the system applying the fixed inclinometer can only receive and process one type of detection data of the micro-electromechanical sensor, and has the defects of insufficient flexibility and poor data reliability.
Disclosure of Invention
Aiming at the problems in the prior art, the invention mainly aims to provide a photoelectric composite inclinometer and an inclinometry system, aiming at solving the problems that the actual deformation conditions of the measured rock soil and the like cannot be truly reflected by the existing fixed inclinometer, the measurement precision is influenced, and the system using the existing fixed inclinometer is not flexible enough and has poor data reliability.
In order to achieve the above object, the present invention provides a photoelectric composite inclinometer, comprising: PVC pipe, flexbile plate, plug and sealed lid, during the flexbile plate inserted the PVC pipe, the plug setting was in the one end of PVC pipe, and sealed lid setting is at the other end of PVC pipe. The flexible board is isometric with the PVC pipe, and the flexible board is provided with a plurality of fiber grating sensors and resistance sensor along its length direction equidistant in turn, and a plurality of fiber grating sensors pass through the fiber cable and establish ties, and a plurality of resistance sensor passes through the 458 cable and establishes ties. The sealing cover is provided with a through hole, and the optical fiber cable and the 458 cable both penetrate through the through hole to be connected with an external inclination measuring system through signals.
Preferably, the inner wall of the PVC pipe is provided with at least one pair of clamping grooves along the length direction, each pair of clamping grooves is symmetrical about the center of the opening of the PVC pipe, and the flexible plate is inserted into the PVC pipe along one pair of clamping grooves.
Preferably, the flexible board is an epoxy board or a phenolic board or a carbon fiber board or an bakelite board.
Preferably, the spacing between the fibre grating sensor and the resistive sensor is 0.25m or 0.5m or 1 m.
Preferably, the plug is conical.
Preferably, the sealing cover is provided with a handle.
Compared with the prior art, the invention has the beneficial effects that: by adopting the integrated flexible board as the substrate for mounting the sensor, the deformation sensitivity is high, and the measurement precision is greatly improved. By adopting the fiber grating sensor as the detection element, the fiber grating sensor has the advantages of no electricity, small volume, light weight, good waterproof performance, high detection precision, long service life and the like. Before the field installation, the fiber grating sensor and the resistance sensor can be pre-installed on the flexible plate, and the flexible plate can be pre-installed in the PVC pipe, so that the field installation of the inclinometer is more convenient. When the fiber grating sensor and the resistance sensor are pre-installed on the flexible board, the installation space can be flexibly selected to meet the precision requirements of different measurement occasions.
The inclinometry system provided by the invention comprises: the device comprises an optical splitter, a demodulator, a local monitor, an upper server, a remote terminal, a remote alarm and a plurality of photoelectric composite inclinometers. The optical fiber cables of the photoelectric composite inclinometers are in signal connection with the optical branching devices, the optical branching devices are in signal connection with the demodulators, the demodulators are in signal connection with the upper server, and the upper server is in wireless connection with the remote terminal and the remote alarm. 458 cables of the photoelectric composite inclinometers are directly connected with local monitoring signals, and the local monitoring signals are connected with demodulation signals.
Compared with the prior art, the invention has the beneficial effects that: when the inclination measuring system is used for testing, the measurement data of the all-grating optical fiber sensor can be flexibly processed, or the measurement data of the full-resistance sensor can be selectively processed, or the measurement data of the grating optical fiber sensor and the resistance sensor can be selected to be comprehensively processed, so that the inclination measuring system is flexible to use and high in data reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the electro-optical composite inclinometer of the invention;
FIG. 2 is a diagram of a PVC pipe according to an embodiment of the present invention;
FIG. 3 is a structural diagram of a PVC pipe inserted with a flexible board according to an embodiment of the photoelectric composite inclinometer of the invention;
FIG. 4 is a schematic view of an installation structure of a grating optical fiber sensor, a resistance sensor, a flexible plate and a PVC pipe in an embodiment of the photoelectric composite inclinometer of the invention;
FIG. 5 is an enlarged view taken at A in FIG. 1;
FIG. 6 is a schematic diagram of the operation of an embodiment of the inclinometer system of the present invention;
the objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The invention provides a photoelectric composite inclinometer.
Referring to fig. 1 to 3, fig. 1 is a schematic view of an overall structure of an embodiment of the photoelectric composite inclinometer of the invention, fig. 2 is a structural view of a PVC pipe in an embodiment of the photoelectric composite inclinometer of the invention, and fig. 3 is a structural view of a flexible plate inserted into a PVC pipe in an embodiment of the photoelectric composite inclinometer of the invention.
As shown in fig. 1 to 3, in the embodiment of the present invention, the photoelectric composite inclinometer includes: the PVC pipe comprises a
The inner wall of the
As shown in fig. 4, the flexible board 200 has the same length as the
It should be noted that in other embodiments of the present invention, the spacing between the
As shown in fig. 1 and 5, the
It should be noted that in other embodiments of the present invention, plug 300 and sealing
Specifically, in this embodiment, in order to facilitate the field installation of the inclinometer, the
In order to take the inclinometer out of the tested geotechnical body or engineering structure after being used conveniently, the
The
As a preferable aspect of the present embodiment, in the present embodiment, an epoxy board is used as the flexible board 200.
It should be noted that in other embodiments of the present invention, the flexible board 200 may also be a phenolic board, a carbon fiber board or a bakelite board.
Compared with the prior art, the invention has the beneficial effects that: by adopting the integrated flexible board 200 as a substrate for mounting the sensor, the deformation sensitivity is high, thereby greatly improving the measurement accuracy. By adopting the
The invention further provides an inclinometry system.
Referring to fig. 6, fig. 6 is a schematic diagram of the operation of the inclinometer system according to the embodiment of the invention.
As shown in fig. 6, in an embodiment of the present invention, the inclinometry system includes: the device comprises an
The
When the device works, the plurality of photoelectric composite inclinometers are uniformly distributed in the measured rock-soil body or the engineering structure. In each photoelectric composite inclinometer, the data of deformation of the inclinometer, which is acquired by the
In each photoelectric composite inclinometer, the data of the deformation of the inclinometer acquired by the
When the inclination measuring system is used, the data collected by the all-grating
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
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