CN204329886U - A kind of link-type displacement monitor - Google Patents

Abstract

The utility model discloses a connecting rod type displacement monitor, which comprises at least one standard connecting rod; wherein, each standard connecting rod comprises: a bottom connection, a bottom connection part, a steel pipe, a movable shaft, a top connection part and a top connection; The bottom connecting part is located at the bottom of the steel pipe, the movable shaft is located at the top of the steel pipe, the other end of the movable shaft is connected to the top connecting part, the bottom wiring protrudes from the bottom of the bottom connecting part, and the top wiring protrudes from above the top connecting part; The wiring and the top wiring are connected through the connecting wires laid inside the steel pipe, and the sensor assembly is also arranged inside the steel pipe; the top wiring can be connected to the signal receiver or the bottom wiring of another standard connecting rod, and the bottom wiring can be connected to the signal receiver or another standard Wire the top of the connecting rod. The utility model obtains the horizontal displacement of the structure body by angle measurement, has a simple structure, is convenient and practical; it can also be used for monitoring the vertical displacement in the settlement deformation, and has a wide application range.

Description

A connecting rod displacement monitor

technical field

The utility model relates to the field of deformation monitoring, in particular to a connecting rod type displacement monitor.

Background technique

Displacement monitoring can effectively identify the deformation of structures such as high-speed and ordinary railways, urban rails, underground engineering, dams, bridges, tunnels, building structures, petroleum and municipal pipelines, and plays an important role in real-time monitoring of the safety performance of structures. Displacement gauges in the prior art use principles such as resistance wires, electromagnetics, and optics. The more common ones, such as SAA array displacement gauges, have complex structures, troublesome use, and high measurement costs. For example, the Chinese patent publication CN102494650A discloses a tower displacement monitoring system and method, which calculates the displacement of the tower relative to the bedrock by using displacement sensors to monitor the displacements of the tower and the bedrock respectively. CN103344185A discloses a non-contact displacement automatic monitoring device, which uses optical principles to realize deformation monitoring. CN103424099A discloses a slope monitoring and early warning system based on deformation data. The slope monitoring and early warning method based on deformation data, according to the displacement value and angle offset value of the measuring point, through the analysis of the deformation and instability mechanism of the slope, uses the theory of rock and soil mechanics , deduce the calculation formula of slope stability; it not only uses the angle offset sensor but also the displacement sensor, has a complicated system, and the calculation principle and method used are used to calculate the stability of the slope.

However, in addition to the complex implementation and high cost of equipment and time, the displacement gauges of the prior art can only monitor the horizontal deformation (horizontal displacement) of soil, rock mass or buildings, and cannot very well monitor the vertical displacement in settlement deformation. Good identification and monitoring, so the application range and effect are limited.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is how to monitor the displacement in all directions conveniently and efficiently.

In order to solve the above technical problems, the utility model provides a connecting rod type displacement monitor, which includes at least one standard connecting rod; wherein, each standard connecting rod includes: bottom connection, bottom connecting part, steel pipe, movable shaft, top The connection part and the top connection part; the bottom connection part is located at the bottom of the steel pipe, the movable shaft is located at the top of the steel pipe, the other end of the movable shaft is connected to the top connection part, and the bottom connection part is connected to the top connection part. The bottom connection part protrudes from the bottom, and the top connection part protrudes from the top connection part; the bottom connection and the top connection are connected through the connection line arranged inside the steel pipe, and the inside of the steel pipe A sensor assembly is also provided; the top wiring can be connected to the signal receiver or the bottom wiring of another standard connecting rod, and the bottom wiring can be connected to the signal receiver or the top wiring of another standard connecting rod.

Preferably, in the monitor: two adjacent standard connecting rods are fixedly connected to the bottom connecting part of the other through the top connection part of one side, and the top wiring of one side is connected to the bottom wiring of the other side at the same time; The top wiring of the standard connecting rod at the top and the bottom wiring of the standard connecting rod at the bottom of the monitor are respectively connected to the signal receiver.

Preferably, in the monitor, the sensor component is a tilt angle sensor.

Preferably, the inclination angle sensor is realized by using a capacitance whose dielectric properties are changed by the influence of gravity.

Preferably, the capacitor includes at least one set of parallel capacitor plates, and when the standard connecting rod is tilted, the capacitor plates or dielectric substances in the capacitor are affected by gravity and correspondingly tilt or move, thereby changing the dielectric of the capacitor. electrical properties.

Preferably, in the monitor, the inclination angle sensor measures the inclination angles of the X and Y axes simultaneously, wherein each group of parallel capacitor plates is used to measure the inclination angle of one axis.

Preferably, the inclination angle sensor is cleared before each use, and the corresponding relationship between capacitance value variation and inclination angle is directly pre-stored in the system, and can be obtained through one analog-to-digital conversion.

Preferably, in the monitor, the sensor assembly in each connecting rod is used to independently measure the inclination angle of the connecting rod, and the signal receiver calculates the horizontal and vertical angles of each connecting rod after receiving the inclination angle. Displacement, summing up the displacements of the at least one standard connecting rod, thereby monitoring 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 that can be installed in cooperation with each other; the ends of the top wiring and the bottom wiring and the ports of the signal connecting machine are provided with wiring aviation plugs that cooperate with each other.

Preferably, the standard length of the standard connecting rod is selected according to the length magnitude of the monitored object; the number used is selected according to the actual length of the monitored object and connected to each other.

The technical solution of the utility model uses angle measurement to obtain the horizontal displacement of the structure body, and its structure is simple, convenient and practical. Moreover, the utility model can also be used for the measurement of vertical displacement in settlement deformation. The monitor is convenient and efficient, has a simple structure, is easy to operate, is convenient for maintenance, reduces costs, and has high promotion and application value.

Description of drawings

Fig. 1 is the structural representation of the connecting rod type displacement monitor of single connecting rod in one embodiment of the utility model;

Fig. 2 is the structural representation of the connecting rod type displacement monitor of two connecting rods in another embodiment of the utility model;

Fig. 3 is a schematic diagram of the effect of multiple connecting rods combined to monitor the horizontal displacement in another embodiment of the present invention;

Fig. 4 is a schematic diagram of the effect of changing the dielectric properties of the capacitor by the influence of gravity on the capacitor plate in the preferred embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are preferred implementation modes for implementing the utility model, and the description is for the purpose of illustrating the general principle of the utility model, and is not intended to limit the scope of the utility model. The scope of protection of the present utility model shall be defined by the claims. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative work belong to this patent. The scope of utility model protection.

Existing displacement gauges are complex in structure, inconvenient to operate, and sometimes even require complex calculations to obtain measured values. In addition, existing displacement gauges usually only measure deformation in the horizontal direction, so the application range and effect are very limited. In the technical solution of the utility model, the horizontal and vertical displacements of the structure are obtained by using the angle measurement method. The implementation method is convenient and efficient, and can be flexibly expanded, which effectively improves the real-time performance and efficiency of structural deformation monitoring. The security guarantee of the structure provides strong support.

As shown in Figure 1, in one embodiment of the utility model, the connecting rod type displacement monitor includes at least one standard connecting rod; wherein, each standard connecting rod includes: bottom wiring 1, bottom connecting part 2, steel pipe 3, The movable shaft 4, the top connection part 5 and the top wiring 6, the bottom connection part 2 is located at the bottom of the steel pipe 3, the movable shaft 4 is located at the top of the steel pipe 3, and the other part of the movable shaft 4 One end is connected to the top connection part 5, the bottom connection 1 protrudes from below the bottom connection part 2, the top connection 6 protrudes from the top connection part 5, the bottom connection 1 and the The top wiring 6 communicates through a connecting line (not shown) arranged inside the steel pipe 3, and a sensor assembly (not shown) is also arranged inside the steel pipe; the top wiring 6 can be connected to a signal receiving 7 or the bottom wiring of another standard connecting rod, the bottom connecting rod 1 can be connected to the signal receiver 7 or the top wiring of another standard connecting rod, and two adjacent standard connecting rods are connected to the bottom of the other through the top connection part of one side. The connecting part is fixedly connected, and at the same time, the top wiring of one side is connected to the bottom wiring of the other; the top wiring of the standard connecting rod at the top of the monitor and the bottom wiring of the standard connecting rod at the bottom of the monitor are respectively connected to the signal receiver7. 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 should be able to understand that the standard length of the connecting rod can be selected according to the length level of the measured object, preferably 1 meter or 10 meters; the number used can also be connected according to the actual length of the measured object, Therefore, the above-mentioned preferred embodiments should not be regarded as a specific limitation on the standard length and usage quantity of the connecting rod of the present invention.

In a preferred embodiment of the present invention, the sensor assembly is an angle sensor, more preferably an inclination angle sensor. The sensor assembly in each connecting rod is used to independently measure the inclination angle of the connecting rod, and the signal receiver calculates the displacement of each connecting rod in the horizontal and vertical directions after receiving the inclination angle, and calculates the displacement of multiple connecting rods and, thereby monitoring the deformation of the structure in two directions. The signal receiver is preferably realized by a single-chip microcomputer or FPGA; the signal receiver can also include a network unit, and the monitoring data is sent to a remote device through a wired or wireless network; more preferably, the signal receiver also includes an alarm unit, which monitors the horizontal displacement and Or when the vertical displacement exceeds the threshold, an audible and visual alarm is issued and an alarm is sent to the remote device through a wired or wireless network. By adopting this method, unattended monitoring can be realized, so that the monitoring instrument of the utility model can be used for automatic monitoring in various harsh environments.

In order to realize unattended automatic monitoring, preferably, the monitor of the present utility model also includes a power supply assembly, which is set independently and/or inside the steel pipe 3; the power supply assembly is connected to the sensor assembly at the same time And the signal receiver 7 provides power support for the sensor and the receiver. More preferably, the independently provided power supply assembly is a solar power supply device, and the power supply assembly arranged in the steel pipe 3 is a small battery, and the small battery preferably adopts a rechargeable battery (such as a lithium battery, etc.). The small battery is charged.

In another preferred embodiment of the present utility model, the power supply assembly further includes a switch circuit and a timer, and the timer turns on and off the switch circuit at a specified time and/or periodically according to a preset setting, thereby realizing Timing monitoring and/or periodic monitoring can further save power while ensuring safety and monitoring quality. Further, when the alarm unit does not receive the monitoring data for a predetermined period of time, it will also issue an audible and visual alarm and send an alarm to the remote device through a wired or wireless network.

Wherein, the inclination angle sensor measures the inclination angles of the X and Y axes at the same time, assuming that the X-axis angle is α, and the Y-axis angle is β, then the plane angle is:

$\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arctan</span>}\frac{\sqrt[\mathrm{<span\; class="notranslate">\; 2</span>}]{\mathrm{<span\; class="notranslate">\; the\; tan</span>}{\mathrm{<span\; class="notranslate">\; \&alpha;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; the\; tan</span>}{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}}{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; ;</span>$

Vertical displacement value:

${\mathrm{<span\; class="notranslate">\; L</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; d</span>}<span\; class="notranslate">\; \&times;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; arctan</span>}\frac{\sqrt[\mathrm{<span\; class="notranslate">\; 2</span>}]{\mathrm{<span\; class="notranslate">\; the\; tan</span>}{\mathrm{<span\; class="notranslate">\; \&alpha;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; the\; tan</span>}{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}}{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; .</span>$

Fix the bottom of the entire monitor, and fix the connecting rod vertically on the surface of the structure or vertically bury it in the structure. When the structure deforms, the connecting rod is driven to tilt in the same direction. For the combination of multiple connecting rods, since each connecting rod is provided with a movable shaft, each connecting rod can be inclined to different degrees according to the deformation of its corresponding part in the structure. When multiple connecting rods are used in combination, the horizontal displacement and vertical displacement of the entire structure can be obtained by summing the respective horizontal displacement and vertical displacement of multiple connecting rods. As shown in Fig. 3 , it is an embodiment of two connecting rods. The respective horizontal displacements L1 and L2 of the two connecting rods are obtained respectively, and summed to obtain the horizontal displacement of the entire structure.

Furthermore, in a preferred embodiment of the present invention, the inclination angle sensor is realized by using a capacitance whose dielectric properties are changed by gravity. For example, in the preferred embodiment of Fig. 4, two sets of parallel capacitive plates are used. For the deformation of each axis, the inclination causes the corresponding inclination or movement of the capacitive plates under the influence of gravity, so that the dielectric area between each set of parallel capacitive plates or the distance changes. Among them, in order to ensure that the dielectric properties are changed by the influence of gravity, at least one of each group of parallel capacitor plates is movable. Those skilled in the art should understand that Figure 4 is only the simplest exemplary capacitor plate arrangement and Deformation mode, the shape of the actual capacitor plate is not limited to a rectangular flat plate, fan-shaped flat plate, arc-shaped plate or even a spherical plate are all alternative technical solutions of the utility model; each group of capacitor plates is not limited to two pieces, the fixed piece and the movable piece The installation method can also be further adjusted. For example, two of the three capacitor plates can be fixed and one can be moved; the movable plate only needs to move under the influence of gravity, and the direction and distance of the movement are not limited; The electric substance is not limited to air, and it is also feasible to change the dielectric properties through the activities of the dielectric substance under the influence of gravity. Therefore, the above-mentioned embodiments should not be regarded as specific limitations on the structure and composition of the capacitive sensor of the present invention.

The change of the dielectric properties will eventually lead to the change of the capacitance value. According to the change of the capacitance value, the change of the dielectric area or distance can be calculated, and the inclination angle of each axis can be obtained by conversion. Preferably, the inclination angle sensor is cleared before each use, and the corresponding relationship between the capacitance value variation and the inclination angle is directly pre-stored in the system, and can be obtained through an analog-to-digital conversion. The capacitive sensor can realize non-contact measurement, and there is no special restriction on the location of the sensor, and its accuracy, convenience, safety and efficiency are much higher than that of the existing displacement gauge.

In order to facilitate the connection, preferably, the bottom connection part and the top connection part of the connecting rod are structures that can be fitted with each other, such as socket, screw connection or bolt connection. The ends of the top wiring and the bottom wiring and the ports of the signal connection machine are provided with wiring aviation plugs that cooperate with each other, so as to realize safe and fast line connection. More preferably, electronic components such as sensors are connected by RS485 bus, and the interface is a 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 specifications are preferably: the top connection length is 25±5cm, the bottom connection length is 110±5cm, the outer diameter of the connection is 48mm±0.5mm, the top connection length is 8mm±1mm, and the bottom connection length is 20cm± 1cm, the diameter of the top connection fixing hole is 6mm, the steel pipe is less than 80cm, the inner diameter is 50mm, and it is recommended to be 74cm (total length 1m).

Compared with the prior art, the utility model uses angle measurement to obtain the horizontal displacement of the structure body, and the utility model has a simple structure, is convenient and practical. Moreover, the utility model can also be used for the measurement of vertical displacement in settlement deformation. The monitor provided by the utility model is convenient and efficient, has a simple structure, is easy to operate, is convenient for maintenance, reduces costs, and has high promotion and application value.

The above description shows and describes several preferred embodiments of the present utility model, but as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used In various other combinations, modifications and environments, and can be modified by the above teachings or skills or knowledge in related fields within the scope of the utility model concept described herein. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the utility model, and should all be within the protection scope of the appended claims of the utility model.

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.