CN104567646A - Connecting rod type displacement monitor - Google Patents
Connecting rod type displacement monitor Download PDFInfo
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- CN104567646A CN104567646A CN201510024582.1A CN201510024582A CN104567646A CN 104567646 A CN104567646 A CN 104567646A CN 201510024582 A CN201510024582 A CN 201510024582A CN 104567646 A CN104567646 A CN 104567646A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000005484 gravity Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003989 dielectric material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 20
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000024042 response to gravity Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The invention relates to the field of the deformation monitoring, and discloses a connecting rod type displacement monitor. The connecting rod type displacement monitor comprises at least one standard connecting rod, wherein each standard connecting rod comprises bottom wiring, a bottom connecting part, a steel pipe, a moving shaft, a top connecting part and top wiring. The bottom connecting part is arranged at the bottom of the steel pipe, the moving shaft is arranged on the top of the steel pipe, the other end of the moving shaft is connected with the top connecting part, the bottom wiring extends out of the bottom connecting part, and the top wiring extends out of the top connecting part. The bottom wiring and the top wiring are communicated through a connecting wire arranged inside the steel pipe, and a sensor assembly is further arranged inside the steel pipe. The top wiring is capable of connecting a signal receiver or bottom wiring of another standard connecting rod, and the bottom wiring is capable of connecting the signal receiver or top wiring of the standard connecting rod. The horizontal displacement of a structural body is obtained through angular measurement. The connecting rod type displacement monitor has the advantages of being simple in structure, convenient and practical, further applied to monitoring the vertical displacement in the settlement deformation, and wide in application range.
Description
Technical Field
The invention relates to the field of deformation monitoring, in particular to a connecting rod type displacement monitor.
Background
The displacement monitoring can effectively identify the deformation of structures such as high-speed and common railways, urban rails, underground engineering, dams, bridges, tunnels, building structures, petroleum and municipal pipelines and the like, and plays an important role in monitoring the safety performance of the structures in real time. In the prior art, the displacement meter utilizes the principles of resistance wire drawing, electromagnetism, optics and the like, and is a common SAA array type displacement meter, the displacement meter is complex in structure, troublesome to use and high in measurement cost. For example, chinese patent publication CN102494650A discloses a tower displacement monitoring system and method, which respectively monitor the displacement of a tower and a bedrock by using displacement sensors, and calculate the displacement of the tower relative to the bedrock. CN103344185A discloses a non-contact automatic displacement monitoring device, which uses optical principle to realize deformation monitoring. CN103424099A discloses a slope monitoring and early warning system based on deformation data, a slope monitoring and early warning method based on deformation data, which deduces a calculation formula of slope stability by analyzing a slope deformation instability mechanism and applying a rock-soil mechanics theory according to a measuring point displacement value and an angle deviation value; the method not only uses an angle deviation sensor but also uses a displacement sensor, has a complicated system, and uses a calculation principle and a method for calculating the stability of the side slope.
However, the displacement meter in the prior art is complex to implement, and has high equipment and time costs, and generally can only monitor the horizontal deformation (horizontal displacement) of a soil body, a rock body or a building, and cannot well identify and monitor the vertical displacement in the settlement deformation, so that the application range and the effect are limited.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved by the present invention is how to conveniently and efficiently monitor the displacement in each direction.
In order to solve the technical problem, the invention provides a connecting rod type displacement monitor, which comprises at least one standard connecting rod; wherein, every standard connecting rod includes: the device comprises a bottom connecting wire, a bottom connecting part, a steel pipe, a movable shaft, a top connecting part and a top connecting wire; the bottom connecting part is positioned at the bottom of the steel pipe, the movable shaft is positioned at the top of the steel pipe, the other end of the movable shaft is connected with the top connecting part, the bottom connecting wire extends out from the lower part of the bottom connecting part, and the top connecting wire extends out from the upper part of the top connecting part; the bottom connection wire and the top connection wire are communicated through a connection wire arranged in the steel pipe, and a sensor assembly is further arranged in the steel pipe; the top wire may be connected to a bottom wire of a signal receiver or another standard connector bar, and the bottom wire may be connected to a top wire of a signal receiver or another standard connector bar.
Preferably, the monitor is one wherein: the two adjacent standard connecting rods are fixedly connected with the bottom connecting part of the other one through the top connecting part of one part, and meanwhile, the top connecting wire of one part is connected with the bottom connecting wire of the other part; and the top wiring of the standard connecting rod positioned at the topmost end of the monitor and the bottom wiring of the standard connecting rod positioned at the bottommost end of the monitor are respectively connected with a signal receiver.
Preferably, in the monitor, the sensor assembly is an inclination angle sensor.
Preferably, the tilt angle sensor is implemented with a capacitance that changes dielectric properties under the influence of gravity.
Preferably, the capacitor comprises at least one set of parallel capacitor plates, and when the standard connecting rod is inclined, the capacitor plates or dielectric substances in the capacitor are correspondingly inclined or moved under the influence of gravity, so that the dielectric properties of the capacitor are changed.
Preferably, in the monitor, the tilt angle sensor measures the tilt angle of the X, Y axis at the same time, wherein each set of parallel capacitive plates is used for measuring an axial tilt angle.
Preferably, the tilt angle sensor is cleared before each use, and the corresponding relationship between the capacitance variation and the tilt angle is directly pre-stored in the system and can be obtained through one-time analog-to-digital conversion.
Preferably, in the monitoring instrument, the sensor assembly in each connecting rod is used for independently measuring the inclination angle of the connecting rod, the signal receiver calculates the displacement of each connecting rod in the horizontal and vertical directions after receiving the inclination angle, and the displacements of the at least one standard connecting rod are summed, so as to monitor the deformation of the monitored object in the horizontal and vertical directions.
Preferably, the bottom connecting part and the top connecting part of the standard connecting rod are structures which can be installed in a matched mode; the end parts of the top connection wire and the bottom connection wire and the port of the signal connecting machine are provided with mutually matched connection aerial sockets.
Preferably, the standard length of the standard connecting rod is selected according to the length magnitude of the monitored object; the number of the used objects is selected according to the actual length of the monitored object and is connected with each other.
The technical scheme of the invention obtains the horizontal displacement of the structural body by utilizing angle measurement, and has simple structure, convenience and practicability. The invention can also be used for measuring the vertical displacement in the settlement deformation, and the monitor has the advantages of convenience, high efficiency, simple structure, easy operation, convenient maintenance, reduced cost and high popularization and application value.
Drawings
FIG. 1 is a schematic diagram of a single link rod link displacement monitor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a link type displacement monitor with two links according to another embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the effect of multiple tie bars in combination on monitoring horizontal displacement in accordance with yet another embodiment of the present invention;
fig. 4 is a schematic diagram of the effect of the capacitance plate on changing the dielectric property of the capacitor under the influence of gravity in a preferred embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are presently preferred modes of carrying out the invention, and that the description is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The protection scope of the present invention shall be defined by the appended claims, and all other embodiments obtained by those skilled in the art without any inventive work shall fall within the protection scope of the present invention.
The existing displacement meter has complex structure and inconvenient operation, sometimes even needs to carry out complex operation to obtain a measured value, and in addition, the existing displacement meter can only measure the deformation in the horizontal direction generally, so that the application range and the effect are very limited. According to the technical scheme, the displacement of the structure body in the horizontal direction and the displacement of the structure body in the vertical direction are obtained in an angle measurement mode, the implementation mode is convenient and efficient, flexible expansion can be achieved, the real-time performance and the efficiency of structure deformation monitoring are effectively improved, and powerful support is provided for the safety guarantee of the structure body.
In one embodiment of the invention, as shown in fig. 1, the link-type displacement monitor comprises at least one standard connecting rod; wherein, every standard connecting rod includes: the steel tube comprises a bottom connection wire 1, a bottom connection part 2, a steel tube 3, a movable shaft 4, a top connection part 5 and a top connection wire 6, wherein the bottom connection part 2 is positioned at the bottom of the steel tube 3, the movable shaft 4 is positioned at the top of the steel tube 3, the other end of the movable shaft 4 is connected with the top connection part 5, the bottom connection wire 1 extends out from the lower part of the bottom connection part 2, the top connection wire 6 extends out from the upper part of the top connection part 5, the bottom connection wire 1 and the top connection wire 6 are communicated through a connection wire (not shown in the figure) arranged inside the steel tube 3, and a sensor assembly (not shown in the figure) is further arranged inside the steel; the top wiring 6 can be connected with a signal receiver 7 or the bottom wiring of another standard connecting rod, the bottom wiring 1 can be connected with the signal receiver 7 or the top wiring of another standard connecting rod, two adjacent standard connecting rods are fixedly connected with the bottom connecting part of the other standard connecting rod through the top connecting part of one standard connecting rod, and the top wiring of one standard connecting rod is connected with the bottom wiring of the other standard connecting rod; and the top wiring of the standard connecting rod positioned at the topmost end of the monitor and the bottom wiring of the standard connecting rod positioned at the bottommost end of the monitor are respectively connected with a signal receiver 7. A preferred embodiment of a single standard connecting rod is shown in fig. 1 and a preferred embodiment of a combination of two standard connecting rods is shown in fig. 2. Those skilled in the art will appreciate that the standard length of the connecting rod may be selected according to the length of the object to be measured, preferably 1 meter rod or 10 meter rod; the number of applications may also be used in conjunction with the actual length of the object to be tested, and thus the preferred embodiment described above should not be considered as a specific limitation on the standard length and number of applications of the tie rod of the present invention.
In a preferred embodiment of the invention, the sensor assembly is an angle sensor, more preferably a tilt angle sensor. The sensor component in each connecting rod is used for independently measuring the inclination angle of the connecting rod, the signal receiver calculates the displacement of each connecting rod in the horizontal direction and the vertical direction after receiving the inclination angle, and the displacements of the connecting rods are summed, so that the deformation of the structural body in the two directions is monitored. The signal receiver is preferably realized by adopting a single chip microcomputer or an FPGA; the signal receiver may further include a network unit transmitting the monitoring data to a remote device through a wired or wireless network; more preferably, the signal receiver further comprises an alarm unit, and when the horizontal displacement and/or the vertical displacement is monitored to exceed the threshold value, the alarm unit gives out an audible and visual alarm and alarms the remote equipment through a wired or wireless network. By adopting the mode, unattended monitoring can be realized, so that the monitor can be used for automatic monitoring under various severe environments.
In order to realize unattended automatic monitoring, the monitor of the invention preferably further comprises a power supply assembly, wherein the power supply assembly is independently arranged and/or arranged in the steel pipe 3; the power supply assembly is connected with the sensor assembly and the signal receiver 7 at the same time, and provides power support for the sensor and the receiver. More preferably, the power supply unit disposed independently is a solar power supply, and the power supply unit disposed in the steel pipe 3 is a small battery, and the small battery is preferably a rechargeable battery (such as a lithium battery), and the small battery may be charged by the solar power supply.
In another preferred embodiment of the invention, the power supply assembly further comprises a switching circuit and a timer, wherein the timer is used for opening and closing the switching circuit at a specified time and/or periodically according to preset settings, so that timing monitoring and/or periodic monitoring are realized, and power is further saved while safety and monitoring quality are guaranteed. Further, the alarm unit can also give out sound and light alarm and alarm to remote equipment through a wired or wireless network when the monitoring data is not received for more than a preset time length.
Wherein, the inclination angle sensor simultaneously measures the inclination angle of X, Y axles, and assuming that the X-axis angle is alpha and the Y-axis angle is beta, the plane angle is:
vertical displacement value:
the bottom of the whole monitor is fixed, the connecting rod is vertically fixed on the surface of the structure or vertically embedded in the structure, and the connecting rod is driven to incline in the same direction when the structure deforms. In the case of a combination of a plurality of connecting rods, each connecting rod can be inclined to different degrees according to the deformation of the corresponding part of the connecting rod in the structural body due to the movable shaft arranged on each connecting rod. When a plurality of connecting rods are used in combination, the respective horizontal displacement and vertical displacement of the plurality of connecting rods are summed respectively, and then the horizontal displacement and vertical displacement conditions of the whole structure are obtained. As shown in fig. 3, in the embodiment of two tie bars, the horizontal displacements L1 and L2 of the two tie bars are obtained, and the horizontal displacements of the entire structure are obtained by summing the horizontal displacements.
Further, in a preferred embodiment of the present invention, the tilt angle sensor is implemented using a capacitance that changes dielectric properties under the influence of gravity. For example, in the preferred embodiment of fig. 4, two sets of parallel plates are used, and for each axis of deformation, the tilt causes the plates to tilt or move in response to gravity, thereby causing a change in the dielectric area or distance between each set of parallel plates. In order to ensure that the dielectric property is changed under the influence of gravity, at least one of the parallel capacitor plates in each group is movable, and it should be understood by those skilled in the art that fig. 4 is only a simplest exemplary capacitor plate arrangement and deformation mode, and the actual shape of the capacitor plate is not limited to a rectangular flat plate, and a sector flat plate, an arc-shaped plate, or even a spherical panel, etc. are all alternative technical solutions of the present invention; each group of capacitor plates is not limited to two, and the installation modes of the fixed plates and the movable plates can be further adjusted, for example, two of the three capacitor plates are fixed, and one capacitor plate is movable; the movable sheet only needs to move under the influence of gravity, and the moving direction and distance are not limited; in addition, the dielectric material between the capacitor plates is not limited to air, and it is also possible to change the dielectric properties by the dielectric material moving under the influence of gravity. Accordingly, the above-described embodiments should not be viewed as specifically limiting the structure and composition of the capacitive sensor of the present invention.
The change of the dielectric property finally causes the capacitance value to change, and the change condition of the dielectric area or distance can be calculated according to the change quantity of the capacitance value, so that the inclination angle of each axial direction is obtained through conversion. Preferably, the tilt angle sensor is cleared before each use, and the corresponding relationship between the capacitance variation and the tilt angle is directly pre-stored in the system and can be obtained through one-time analog-to-digital conversion. The capacitance sensor can realize non-contact measurement, has no special limitation on the placement position of the sensor, and has the precision, the convenience, the safety and the efficiency which are far higher than those of the existing displacement meter.
For the connection, the bottom connecting part and the top connecting part of the connecting rod are preferably structures which can be installed in a matching way, such as sleeving connection, threaded connection or bolting connection. The terminal of top wiring and bottom wiring and the port of signal connection machine set up the wiring of mutually supporting and insert by plane to realize safe swift line connection. More preferably, the electronic components such as the sensor are connected in an RS485 bus mode, and the interface is in four-wire connection; the power supply voltage is 7-20v, the current is 60-80mA, the factory communication baud rate is 9600, and the application communication baud rate is 2400. For a connecting rod with a standard length of 1 meter, the hardware specification is preferably: the length of a top connecting line is 25 +/-5 cm, the length of a bottom connecting line is 110 +/-5 cm, the outer diameter of a joint is 48mm +/-0.5 mm, the length of a top connecting part is 8mm +/-1 mm, the length of a bottom connecting part is 20cm +/-1 cm, the diameter of a top connecting fixing hole is 6mm, the steel pipe is smaller than 80cm, the inner diameter is 50mm, and 74cm (the total length is 1m) is recommended.
Compared with the prior art, the invention obtains the horizontal displacement of the structural body by utilizing angle measurement, and has simple structure, convenience and practicability. The monitor provided by the invention is convenient, efficient, simple in structure, easy to operate, convenient to maintain, low in cost and high in popularization and application value.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A connecting rod type displacement monitor is characterized by comprising at least one standard connecting rod; wherein,
each standard connecting rod comprises: the device comprises a bottom connecting wire, a bottom connecting part, a steel pipe, a movable shaft, a top connecting part and a top connecting wire;
the bottom connecting part is positioned at the bottom of the steel pipe, the movable shaft is positioned at the top of the steel pipe, the other end of the movable shaft is connected with the top connecting part, the bottom connecting wire extends out from the lower part of the bottom connecting part, and the top connecting wire extends out from the upper part of the top connecting part;
the bottom connection wire and the top connection wire are communicated through a connection wire arranged in the steel pipe, and a sensor assembly is further arranged in the steel pipe;
the top wire may be connected to a bottom wire of a signal receiver or another standard connector bar, and the bottom wire may be connected to a top wire of a signal receiver or another standard connector bar.
2. The monitor of claim 1, wherein the monitor is further configured to:
the two adjacent standard connecting rods are fixedly connected with the bottom connecting part of the other one through the top connecting part of one part, and meanwhile, the top connecting wire of one part is connected with the bottom connecting wire of the other part;
and the top wiring of the standard connecting rod positioned at the topmost end of the monitor and the bottom wiring of the standard connecting rod positioned at the bottommost end of the monitor are respectively connected with a signal receiver.
3. The monitor of claim 1 or 2, wherein the sensor assembly is a tilt angle sensor.
4. The monitor of claim 3, wherein the tilt angle sensor is implemented using a capacitance that changes dielectric properties under the influence of gravity.
5. The monitor of claim 4, wherein the capacitor comprises at least one set of parallel capacitor plates, and wherein when the standard connecting rod is tilted, the capacitor plates or dielectric material in the capacitor are correspondingly tilted or moved under the influence of gravity, thereby changing the dielectric properties of the capacitor.
6. The monitor of claim 5, wherein the tilt angle sensor simultaneously measures the tilt angle of the X, Y axes, wherein each set of parallel capacitive plates is used to measure an axial tilt angle.
7. The monitor according to claim 4 or 5, wherein the tilt angle sensor is cleared before each use, and the corresponding relationship between the capacitance variation and the tilt angle is directly pre-stored in the system and obtained by an analog-to-digital conversion.
8. The monitor according to claim 1 or 2, wherein the sensor assembly in each connecting rod is used to independently measure the tilt angle of the connecting rod, the signal receiver calculates the displacement of each connecting rod in the horizontal and vertical directions after receiving the tilt angle, and the displacements of the at least one standard connecting rod are summed to monitor the deformation of the monitored object in the horizontal and vertical directions.
9. The monitor of claim 1, wherein the bottom and top connectors of the standard connector bar are cooperatively mountable; the end parts of the top connection wire and the bottom connection wire and the port of the signal connecting machine are provided with mutually matched connection aerial sockets.
10. The monitor of claim 1 or 2, wherein the standard length of the standard connector bar is selected according to the length order of the monitored object; the number of the used objects is selected according to the actual length of the monitored object and is connected with each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510024582.1A CN104567646B (en) | 2015-01-18 | 2015-01-18 | A kind of link-type displacement monitor |
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| CN201510024582.1A CN104567646B (en) | 2015-01-18 | 2015-01-18 | A kind of link-type displacement monitor |
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| CN104567646A true CN104567646A (en) | 2015-04-29 |
| CN104567646B CN104567646B (en) | 2015-12-02 |
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Cited By (5)
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| CN105022256A (en) * | 2015-07-03 | 2015-11-04 | 烟台北极星石英钟有限公司 | Design method of pointer type multifunction intelligent clock |
| CN105444732A (en) * | 2015-12-30 | 2016-03-30 | 同济大学 | Rod type longitudinal tunnel settlement measurement rod, equipment and system |
| CN105937879A (en) * | 2016-06-30 | 2016-09-14 | 嘉兴同禾传感技术有限公司 | Slope displacement and inclination angle monitoring device and method |
| CN107621257A (en) * | 2017-11-10 | 2018-01-23 | 长安大学 | A kind of test oneself Sopwith staff and method for being used to measure tunnel face-upward slope ground settlement |
| CN112459841A (en) * | 2020-10-28 | 2021-03-09 | 江西省交通科学研究院 | Shield tunnel construction settlement monitoring device and method based on neural network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112459841A (en) * | 2020-10-28 | 2021-03-09 | 江西省交通科学研究院 | Shield tunnel construction settlement monitoring device and method based on neural network |
| CN112459841B (en) * | 2020-10-28 | 2023-10-13 | 江西省交通科学研究院 | Shield tunnel construction settlement monitoring device and method based on neural network |
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| Publication number | Publication date |
|---|---|
| CN104567646B (en) | 2015-12-02 |
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