JP2008192573A - Continuous measurement type fall detector of civil engineering structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous measurement type fall detector of a civil engineering structure capable of properly detecting a temporal change of an advancing change state (inclination) even in the case of a falling angle not smaller than 90°. <P>SOLUTION: This continuous measurement type fall detector attached to a civil engineering structure is provided with: a conductive passage 1 of a hollow polygonal shape; a conductive spherical body 2 rollable in the conductive passage 1; and electrodes 4-9 set at predetermined angles of rotation of the conductive passage 1 and detecting rolling of the conductive spherical body 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tilt detection apparatus for a civil engineering structure, and more particularly to a continuous measurement type fall detection apparatus for a civil engineering structure for detecting a protective work outflow or the like around a bridge pier.

  Conventionally, as shown in FIG. 5, a protective work 102 is provided around the pier 101, but the protective work 102 around the pier 101 may flow out due to water increase or the like, and the deformation of the protective work 102 is detected. There is a need to. When the protective work 102 is located on the water, it is possible to check the outflow of the protective work 102 by visual observation, but when the protective work 102 is applied under the water surface 103 as shown in FIG. It is impossible to check the outflow of the protector 102. Therefore, in order to detect the outflow of the protective work 102, a tilt detection device for a civil engineering structure is required.

  By the way, conventionally, there is a device that outputs a tilt or vibration of a structure with an electrical contact signal.

  FIG. 7 is a schematic view of a conventional tilt detection device (see Patent Document 1 below).

  In FIG. 7, reference numeral 111 denotes a conductive pedestal, which has a mortar-shaped surface 112. A conductive sphere 113 is placed on the mortar-shaped surface 112 of the conductive pedestal 111. Reference numeral 114 denotes a conductive cover, which is disposed so as not to contact the conductive base 111.

  Therefore, as shown in FIG. 7A, when the conductive pedestal 111 is in a horizontal state, the conductive sphere 113 is positioned at the center of the mortar-shaped surface 112, and the conductive pedestal 111 and the conductive cover are arranged. 114 is away and is in an electrically OFF state. However, as shown in FIG. 7B, when the conductive pedestal 111 is inclined, the conductive sphere 113 rolls in the inclined direction, and the conductive sphere 113 bridges the conductive pedestal 111 and the conductive cover 114. Therefore, it is in an electrically ON state. Therefore, it can be detected that the conductive base 111 is inclined.

  Of course, since the conductive sphere 113 also moves due to the vibration of the conductive pedestal 111, the vibration of the conductive pedestal 111 can also be detected.

  Moreover, when changing the amount of inclination to detect, it can respond by changing the inclination angle of a mortar-shaped surface or a mountain-shaped surface.

Furthermore, as a conventional tilt detection device, a tilt switch using a conductive liquid is also used (see Patent Document 2 below).
JP 2000-67718 A JP 2000-21274 A

  However, in the above-described conventional inclination detector, it is difficult to capture the time-dependent change (inclination) that progresses.

  Therefore, it is necessary to take measures such as arranging detectors with different angles in parallel. However, there has been a fundamental defect that conventional detection devices cannot detect over a 90-degree fall angle (tilt).

  In view of the above situation, the present invention provides a continuous-measurement type fall detection device for civil engineering structures that can accurately detect a change over time of advancing deformation (tilt) even at a fall angle of 90 degrees or more. The purpose is to provide.

In order to achieve the above object, the present invention provides
[1] In a continuous measurement type fall detection device attached to a civil engineering structure, a hollow polygonal conductive path, a conductive sphere capable of rolling the conductive path, and a predetermined rotation angle of the conductive path. An electrode for detecting rolling of the conductive sphere is provided.

  [2] In a continuous measurement type fall detection device attached to a civil engineering structure, an insulating passage composed of a hollow polygonal annular pipe, a conductive sphere capable of rolling in the insulating passage, and the conductive passage And an electrode for detecting the rolling of the conductive sphere at a predetermined rotation angle.

  [3] The continuous measurement type fall detection apparatus for civil engineering structures according to [1] or [2], wherein the predetermined rotation angle is determined as 45 degrees.

  [4] The continuous measurement type fall detection apparatus for civil engineering structures according to [1] or [2], wherein the predetermined rotation angle is determined to be 60 degrees.

  According to the present invention, even with a fall angle of 90 degrees or more, it is possible to accurately detect a time-dependent change (tilt) in progress.

  A continuous measurement type fall detection device for a civil engineering structure according to the present invention includes a hollow polygonal conductive path, a conductive sphere capable of rolling along the conductive path, and the conductive path at a predetermined rotation angle of the conductive path. The electrode which detects the rolling of a sex sphere is provided.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a schematic diagram of a continuous measurement type fall detection apparatus for civil engineering structures showing a first embodiment of the present invention.

  In this figure, 1 is a hollow polygonal conductive path, 2 is a conductive sphere capable of rolling the conductive path 1, and 3 is a connection line (-) connected to the conductive path 1 (reference position). 4 is a connection line having an electrode for detecting a 60-degree fall, 5 is a connection line having an electrode for detecting a 120-degree fall, 6 is a connection line having an electrode for detecting a 180-degree fall, 7 is 240 degrees 8 is a connection line having an electrode for detecting a fall of 300 degrees, 9 is a connection line having an electrode for detecting a 360 degree fall, and 10 is a continuous measurement type fall detection device. A civil engineering structure to which is attached, for example, a protective work around a pier.

  FIG. 2 is a schematic view showing the operation of the civil engineering structure continuous measurement type fall detection apparatus according to the first embodiment of the present invention.

  First, FIG. 2A shows a reference position of 0 degree, and as shown in FIG. 2B, it falls 60 degrees from the state of FIG. Then, the conductive sphere 2 passes through the right conductive path (-potential) 1 and comes into contact with the connection line 4 having an electrode for detecting a fall of 60 degrees, and between the path (-potential) 1 and the connection line 4. A 60-degree fall output signal is obtained from the connection line 4 by the bridge of the conductive sphere 2. Next, when it falls 120 degrees from the state of FIG. 2A, the conductive sphere 2 further falls 120 degrees through the conductive path (-potential) 1 on the right side as shown in FIG. 2C. It contacts the connecting line 5 having the electrode to be detected. Then, an output signal of 120 degrees falling is obtained from the connection line 5 due to the bridge of the conductive sphere 2 between the passage (-potential) 1 and the connection line 5. Next, when it falls 180 degrees from the state of FIG. 2 (a), the conductive sphere 2 further detects a 180 degree fall through the right conductive path (-potential) 1 as shown in FIG. 2 (d). The connection line 6 having the electrode to be contacted is contacted. Then, an output signal that falls 180 degrees is obtained from the connection line 6 due to the bridging of the conductive sphere 2 between the passage (-potential) 1 and the connection line 6.

  Thus, the continuous measurement type fall detection device can obtain an output signal of the fall angle by sequentially falling.

  In the above embodiment, the fall detection angle is determined to be 60 degrees, but it may be determined to be 45 degrees as in the second embodiment described later. Moreover, it is possible to cope with any falling angle by increasing or decreasing the number of regular polygons. Further, by installing a plurality of the continuous measurement type fall detection devices, it is possible to cope with the fall in multiple directions.

  FIG. 3 is a schematic view of a continuous measurement type fall detection apparatus for civil engineering structures showing a second embodiment of the present invention, FIG. 3 (a) is an overall configuration diagram thereof, and FIG. 3 (b) is a diagram of FIG. 3 (a). FIG.

  In this figure, 11 is a passage made of a polygonal annular insulating conduit, 12 is a conductive sphere capable of rolling the passage 11 made of the annular insulating conduit, and 13 is a passage made of the annular insulating conduit. 11 is an electrode having a connection terminal 13A arranged at a reference position, 14 is an electrode having a connection terminal 14A arranged at a 45-degree fall position of the passage 11 comprising the annular insulating pipe line, and 15 is an annular insulating pipe. An electrode having a connection terminal 15A disposed at a 90-degree fall position of the passage 11 made of a path, 16 is an electrode having a connection terminal 16A arranged at a 135-degree fall position of the passage 11 made of an annular insulating pipe line, 17 Is an electrode having a connection terminal 17A arranged at the 180-degree fall position of the passage 11 made of the annular insulating pipeline, and 18 is arranged at the 225-degree fall position of the passage 11 made of the annular insulating pipeline. An electrode having a connecting terminal 18A, 19 is an electrode having a connecting terminal 19A disposed at a 270-degree overturning position of the passage 11 made of the annular insulating conduit, and 20 is 315 of the passage 11 made of the annular insulating conduit. It is an electrode which has the connecting terminal 20A arrange | positioned in a degree fall position.

  This continuous measurement type fall detection device is also attached to a civil engineering structure (not shown), and an output signal can be obtained according to the fall angle of the civil engineering structure.

  Therefore, it is possible to accurately detect the temporal change of the deformation (tilt) that the civil engineering structure proceeds.

  In the above embodiment, the fall detection angle is determined to be 45 degrees, but 60 degrees may be determined as in the first embodiment described above. Moreover, it is possible to cope with any falling angle by increasing or decreasing the number of regular polygons. Further, by installing a plurality of the continuous measurement type fall detection devices, it is possible to cope with the fall in multiple directions.

  FIG. 4 is a schematic diagram showing an application example of the tilt detection apparatus of the present invention.

  In this figure, 21 is an pier, 22 is an outflow work around the pier, 23 is an inclination detection device (sensor) having a wireless transmission device attached to the outflow work 22, and 24 is an output from the inclination detection device (sensor) 23. A wireless receiver 25 for collecting information is a water surface.

  In this way, by collecting the output information from the inclination detection device (sensor) 23 by the wireless reception device 24, it is possible to accurately collect whether or not the outflow work 22 around the pier 21 has flowed out. As a result, spillage measures can be taken.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The continuous measurement type fall detection device of the present invention can be used as a continuous measurement type fall detection device that accurately detects a temporal change in the progress (inclination) of a civil engineering structure.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of the continuous measurement type fall detection apparatus of the civil engineering structure which shows 1st Example of this invention. It is a schematic diagram which shows operation | movement of the continuous measurement type fall detection apparatus of the civil engineering structure which shows 1st Example of this invention. It is a schematic diagram which shows operation | movement of the continuous measurement type fall detection apparatus of the civil engineering structure which shows 2nd Example of this invention. It is a schematic diagram which shows the example of application of the inclination detection apparatus of this invention. It is a photograph when a conventional pier spill is under water. It is a schematic diagram (the 1) of the conventional inclination detection apparatus. It is a schematic diagram (the 2) of the conventional inclination detection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hollow polygonal conductive path 2,12 Conductive sphere 3 Connection line connected to conductive path (-) (reference position)
4 Connection line having an electrode for detecting a fall of 60 degrees 5 Connection line having an electrode for detecting a fall of 120 degrees 6 Connection line having an electrode for detecting a fall of 180 degrees 7 Having an electrode for detecting a fall of 240 degrees Connection line 8 Connection line having electrodes for detecting overturn of 300 degrees 9 Connection line having electrodes for detecting overturn of 360 degrees 10 Civil engineering structure to which continuous measurement type fall detection device is attached 11 Polygonal annular insulating pipe 13A, 14A, 15A, 16A, 17A, 18A, 19A, 20A Connection terminal 14 Electrode having a connection terminal arranged at a 45-degree fall position 15 90-degree fall Electrode having connection terminal arranged at position 16 Electrode having connection terminal arranged at 135 degree overturning position 17 Arranged at 180 degree overturning position Electrode having a connection terminal 18 Electrode having a connection terminal arranged at a 225-degree fall position 19 Electrode having a connection terminal arranged at a 270-degree fall position 20 Electrode having a connection terminal arranged at a 315-degree fall position 21 Abutment 22 Outflow work around bridge piers 23 Inclination detector (sensor) with wireless transmitter
24 Wireless receiver 25 Water surface

Claims (4)

In continuous measurement type fall detection device attached to civil engineering structure,
(A) a hollow polygonal conductive path;
(B) a conductive sphere capable of rolling along the conductive path;
(C) A continuous measurement type fall detection device comprising an electrode for detecting rolling of the conductive sphere at a predetermined rotation angle of the conductive passage. In continuous measurement type fall detection device attached to civil engineering structure,
(A) an insulating passage composed of a hollow polygonal annular pipe;
(B) a conductive sphere capable of rolling in the insulating passage;
(C) A continuous measurement type fall detection device comprising an electrode for detecting rolling of the conductive sphere at a predetermined rotation angle of the conductive passage.   The continuous measurement type fall detection device for civil engineering structures according to claim 1 or 2, wherein the predetermined rotation angle is determined as 45 degrees.   The continuous measurement type fall detection device for civil engineering structures according to claim 1 or 2, wherein the predetermined rotation angle is determined as 60 degrees.