JP7152739B2 - Monitoring equipment and monitoring systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vibration damping device equipped with a vibration damping member that suppresses shaking of a structure in the event of an earthquake or strong wind, and a monitoring system that monitors the vibration damping member.

Conventionally, damping devices for suppressing vibrations caused by earthquakes and strong winds are installed inside walls of structures such as houses and factories.
A vibration damping device for a structure is designed and manufactured so that the durability period is determined according to the life of the structure, and the vibration damping function is exhibited during the durability period. However, vibration damping devices for structures are used under conditions ranging from below freezing to over 50°C due to seasonal changes such as spring, summer, autumn and winter, daytime and nighttime temperature changes, and weather changes. Under such conditions of use, it cannot be denied that the vibration damping device may become unable to exhibit its function for some reason.
However, as described above, the vibration damping device is installed in a location such as the inside of a wall that is not directly visible. Therefore, when an abnormality occurs in the damping device for some reason, it is difficult for the owner or manager of the structure to immediately recognize the abnormality.

Patent Literature 1 discloses a monitoring system in which a hydraulic damper is provided with a temperature sensor for detecting oil temperature, and the functional state of the hydraulic damper is monitored based on the temperature detected by the temperature sensor. In this monitoring system, the oil temperature detected by the temperature sensor is transmitted to the monitoring device using a public line and/or a network line within a predetermined area.

JP-A-2001-214633

In the technique described in Patent Literature 1, when the temperatures detected by some of the temperature sensors indicate values that are far apart from the temperatures detected by many other temperature sensors, an abnormality has occurred. It can be recognized that there is a hydraulic seismic damper. However, unless it is possible to identify where in the structure the hydraulic damper installed in the structure is abnormal, inspection and repair work cannot be performed appropriately.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to appropriately recognize the state of a damping member installed inside a wall or the like, and to appropriately identify a damping member in which an abnormality has occurred.

In order to solve the above problems , one aspect of the monitoring device according to the present invention is a monitoring device for monitoring the state of a plurality of vibration damping members installed at positions that cannot be visually recognized from the outside in a structure, wherein the vibration damping an acquisition unit that acquires state information indicating the state of a member and a manufacturing serial number of the damping member; a determination unit that determines an abnormality of the damping member based on the state information of the damping member; an identification unit for identifying information regarding the installation position of the vibration damping member determined to be abnormal based on management information in which the manufacturing serial number of the vibration member and information regarding the installation position are associated; and a determination result by the determination unit. and an output unit for outputting log information including at least the manufacturing serial number of the vibration damping member and the information regarding the installation position specified by the specifying unit.
One aspect of the monitoring system according to the present invention includes a plurality of vibration damping members installed at positions that cannot be visually recognized from the outside in a structure, and a detection unit provided in the vibration damping member and detecting the state of the vibration damping member. a transmission unit provided on the vibration damping member for transmitting state information indicating the state of the vibration damping member detected by the detection unit and a manufacturing serial number of the vibration damping member; and the monitoring device. Prepare.
One aspect of the monitoring method according to the present invention is a monitoring method for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure, comprising state information indicating the state of the damping member; an acquisition step of acquiring the manufacturing serial number of the vibration damping member; a determination step of determining abnormality of the vibration damping member based on the state information of the vibration damping member; and an installation of the manufacturing serial number of the vibration damping member. A specifying step of specifying information about the installation position of the damping member determined to be abnormal based on management information associated with information about the position, a determination result in the determining step, and manufacturing the damping member. an outputting step of outputting log information including at least a serial number and information about the installation position specified in the specifying step;
One aspect of the monitoring device according to the present invention is a monitoring device for monitoring the state of a plurality of vibration damping members installed at positions that cannot be visually recognized from the outside in a structure, wherein abnormality information indicating an abnormality of the vibration damping member and an acquisition unit that acquires the manufacturing serial number of the vibration damping member; and the installation position of the vibration damping member that has acquired abnormality information based on management information in which the manufacturing serial number and information related to the installation position are associated. outputting log information including at least an identification unit for identifying information, the abnormality information, a manufacturing serial number of the damping member from which the abnormality information was obtained, and information on the installation position identified by the identification unit; and an output unit.
One aspect of the monitoring system according to the present invention includes a plurality of vibration damping members installed in a structure at a position that cannot be visually recognized from the outside, and a detection device provided in the vibration damping member and detecting an abnormal state of the vibration damping member. and a transmission unit provided in the vibration damping member and transmitting abnormality information indicating the abnormality of the vibration damping member and a manufacturing serial number of the vibration damping member when the detection unit detects an abnormality. and the monitoring device.
One aspect of the monitoring method according to the present invention is a monitoring method for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure. an acquisition step of acquiring the manufacturing serial number of the vibration damping member; and the installation position of the vibration damping member for which abnormality information has been acquired based on management information in which the manufacturing serial number and information related to the installation position are associated. outputting log information including at least a specifying step of specifying information, the abnormality information, a manufacturing serial number of the vibration damping member from which the abnormality information was obtained, and information on the installation position specified in the identifying step; and an output step.
One aspect of a program according to the present invention is a program for causing a computer to execute any of the above monitoring methods.
One aspect of the vibration damping device according to the present invention is a vibration damping device comprising a vibration damping member installed at a position that cannot be visually recognized from the outside in a structure, the detection unit detecting the state of the vibration damping member; A determination unit that determines an abnormality of the vibration damping member based on the state of the vibration damping member detected by the detection unit; and a transmitting unit configured to transmit log information including at least the result of determination by the determination unit and information on the installation position specified by the determination unit.

As a result, the damping device can detect whether or not there is an abnormality in a damping member installed in a position that cannot be visually confirmed, such as inside the wall of the building, and the installation position of the damping member in which an abnormality has occurred. can appropriately notify the owner, manager, etc. Therefore, the owner or manager of the building can easily recognize that an abnormality has occurred in the damping member, and can appropriately grasp the installation location of the damping member in which the abnormality has occurred. It is possible to quickly and accurately repair or replace the vibrating member.

Further, in the vibration damping device described above, the determination unit may determine a level of abnormality of the vibration damping member. In this way, by determining the level of abnormality (whether it is a level at which follow-up observation is sufficient, whether it is a level at which immediate repair is required, etc.), it is possible to notify the state of the damping member in detail.
Further, in the vibration damping device described above, the detecting section may shorten a detection interval of the state of the vibration damping member as the abnormality level of the vibration damping member determined by the determination section is higher. As a result, when the abnormal level of the vibration damping member is low, the driving of the sensor that detects the state of the vibration damping member can be suppressed, and power consumption can be reduced. In addition, since the state of the damping member can be monitored at short intervals after the abnormality is detected, it is possible to appropriately determine when the damping member needs to be repaired or replaced, and to respond quickly. .

Further, in the above vibration damping device, the vibration damping member is a hydraulic damper having a cylinder filled with oil and a piston provided in the cylinder, and the hydraulic damper is a piston rod connected to the piston. The end of the cylinder may be connected to one structural member and the end of the cylinder may be connected to the other structural member so as to be obliquely installed between the one and the other structural member. In this case, it is possible to appropriately detect an abnormality in the hydraulic damper installed inside the wall of the building.
Further, in the vibration damping device described above, the detection unit may be an oil leakage sensor that detects leakage of the oil from the cylinder. By detecting oil leakage from the cylinder of the hydraulic damper in this way, it is possible to appropriately detect a situation where the damping function of the hydraulic damper cannot be exhibited.

In the vibration damping device described above, the determination unit may determine the level of abnormality of the vibration damping member based on the amount of leakage of the oil detected by the oil leakage sensor. When an abnormality that may cause oil leakage occurs in the hydraulic damper, oil gradually leaks from the cylinder, and when the amount of oil leakage reaches a certain value, the damping function of the hydraulic damper cannot be exhibited. Therefore, by monitoring the amount of oil leakage, it is possible to appropriately determine whether the abnormality is of a level that can be observed by follow-up or whether the abnormality is of a level that requires immediate repair, and to notify the user.
Furthermore, in the above vibration damping device, the oil leak sensor may be installed in the vicinity of the vertically lower end of the piston rod. As a result, it is possible to appropriately detect oil leakage from the cylinder.

Further, the vibration damping device includes a holding unit that holds a database that associates identification information of the vibration damping member with an installation position of the vibration damping member; and the identification unit refers to the database held by the holding unit based on the identification information transmitted by the transmission unit to identify the installation position. good. In this case, the installation position of the damping member can be specified easily and appropriately.
Furthermore, the vibration damping device may further include a creating unit that creates the database and causes the holding unit to hold the database. If the database is created after installing the damping member inside the wall or the like, a highly reliable database can be obtained, and the installation position of the damping member can be specified more appropriately.

Further, the vibration damping device further includes a transmission unit provided in the vibration damping member and transmitting positional information of the vibration damping member, and the specifying unit transmits the positional information transmitted by the transmission unit. , the installation position may be specified. In this manner, if the vibration damping member is configured to transmit positional information, it is possible to easily specify the installation position of the vibration damping member in which an abnormality has occurred.
Further, in the vibration damping device described above, the transmission unit may transmit the log information by e-mail to a predetermined transmission destination. As a result, it is possible to appropriately notify the owner or manager of the building at a remote location of the state of the damping member.
Further, the vibration damping device may further include a recording unit that records the log information. As a result, the recorded log information can be effectively used for creating a maintenance plan for the vibration damping device and for designing the next model of the vibration damping device.

Furthermore, one aspect of the monitoring system according to the present invention is a monitoring system for monitoring a vibration damping member installed at a position that cannot be visually recognized from the outside in a structure, the monitoring system comprising: a detection unit that detects the state of the vibration damping member; A determination unit that determines an abnormality based on the state of the damping member detected by the detection unit, a determination unit that identifies a position in the structure where the abnormality occurs, and the determination unit and a transmitting unit configured to transmit log information including at least the information about the position specified by the determining result and the specifying unit.
For example, the determination unit determines an abnormality of the vibration damping member based on the state of the vibration damping member detected by the detection unit, The location may be identified, and the transmission unit may transmit log information including at least the determination result by the determination unit and information on the installation location identified by the identification unit.
As a result, the presence or absence of abnormalities in damping members installed in locations that cannot be visually confirmed, such as the inside of building walls, and the installation location of damping members with abnormalities can be identified by building owners and managers. It is possible to create a system that can appropriately notify people, etc. Therefore, the owner or manager of the building can easily recognize that an abnormality has occurred in the damping member, and can appropriately grasp the installation location of the damping member in which the abnormality has occurred. It is possible to quickly and accurately repair or replace the vibrating member.

Further, one aspect of the method for monitoring a vibration damping device according to the present invention is a method for monitoring a vibration damping member installed at a position that cannot be visually recognized from the outside in a structure, comprising the step of detecting the state of the vibration damping member; a step of determining an abnormality based on the detected state of the damping member; a step of identifying a position in the structure where the abnormality occurs; and sending log information including at least information about said location to an external device.
For example, based on the detected state of the damping member, the abnormality of the damping member is determined, the installation position of the damping member with the abnormality in the structure is specified, the determination result of the abnormality and the identification The log information including at least the information regarding the determined installation position may be transmitted to the external device.
As a result, building owners and administrators can determine whether or not abnormalities have occurred in damping members that are installed in locations that cannot be visually confirmed, such as inside walls of buildings, and the location of damping members where abnormalities have occurred. and can be properly grasped. Therefore, when an abnormality occurs in the vibration damping member, it is possible to quickly and accurately repair or replace the vibration damping member in which the abnormality has occurred.

ADVANTAGE OF THE INVENTION According to this invention, the state of the damping member installed in the inside of a wall etc. can be recognized appropriately, and the damping member with which abnormality has generate|occur|produced can be specified appropriately. Therefore, when an abnormality occurs in the vibration damping member, repair or replacement can be performed quickly, and the function of the vibration damping device can be properly maintained.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows embodiment which applied the damping apparatus in this embodiment to the building. The front view which shows a hydraulic damper. Sectional drawing which shows a hydraulic damper. It is an enlarged view of the piston part which shows a piston valve, (a) is aa sectional drawing of (b), (b) is a side view. The figure which shows the damping force characteristic of a hydraulic damper. FIG. 4 is a cross-sectional view showing a state in which a valve seat plate of the piston valve is bent; FIG. 2 is a block diagram showing the configuration of an oil leakage monitoring device; 4 is a flowchart showing abnormality determination processing executed by the monitoring device; The figure which shows the notification example by e-mail.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. A vibration damping device A having a hydraulic damper 1, which is a vibration damping member, is installed obliquely between a column 2 and a beam 3 of a building as shown in FIG. This vibration damping device A is suitable for use in wooden houses such as the framework construction method and the 2x4 construction method, but is not limited to this, and is used in buildings such as light steel structures and heavy steel structures, towers, bridges, etc. It can be applied to any structure, and can be applied not only to new construction but also to seismic reinforcement of existing structures.
Further, the method of installing the hydraulic damper 1 is not limited to the method of installing it obliquely between the pillar 2 and the beam 3 as shown in FIG. You may Note that the hydraulic damper 1 can be installed between various structural members such as between the column 2 and a base (not shown) or between connecting portions connecting the column 2 and the beam 3 . Further, the damping device A is not limited to the one in which the hydraulic damper 1 is directly connected between the structural members, and the hydraulic damper 1 may be interposed in a part of the brace structure.

The hydraulic damper 1 has a cylinder 5 and a piston rod 6, as shown in FIGS. One end of the cylinder 5 is closed by a cap member 7 and the other end is closed by a connecting member 9 . One end of the piston rod 6 has a small diameter portion 6a, and the piston 10 is fitted in the small diameter portion 6a. A boss portion 11 is integrally fixed to the other end of the piston rod 6 . A mounting metal fitting 13 is rotatably connected to the boss portion 11 via a bolt 12 . A boss portion 15 is integrally fixed to the other end connecting member 9 of the cylinder 5 , and the other mounting metal fitting 17 is rotatably connected to the boss portion 15 via a bolt 16 .

An annular end member 19 is fitted to one side of the cylinder 5 , and the end member 19 is defined by a snap ring 20 so as to be integral with the cylinder 5 in axial position. An O-ring 21 is mounted on the outer peripheral surface of the end member 19, and an O-ring 22 is also mounted on the inner peripheral surface through which the piston rod 6 penetrates. The space is partitioned in an oil-tight manner. A float member 23 is axially movably fitted to the other side of the cylinder 5, and a slide ring 25 and a seal ring 26 are mounted on the outer peripheral surface of the float member 23 so as to be aligned in the axial direction. . The float member 23 partitions axially forward and rearward spaces in an oil-tight and airtight manner.

A space between the end member 19 and the float member 23 in the cylinder 5 is filled with oil having a predetermined viscosity to form a hydraulic chamber 27 . Note that oil means a liquid having a predetermined viscosity and is generally oil, but is not limited to oil in a narrow sense. A space between the float member 23 and the connecting member 9 in the cylinder 5 is filled with an inert gas such as nitrogen gas at a predetermined pressure to form a gas chamber (prepressure chamber) 29 . A cap member 7 at one end of the cylinder has a guide hole 7a through which the piston rod 6 is slidably inserted to support the piston rod. A scraper 30 is attached to scrape off adhering dust and the like. A space between the end member 19 and the cap member 7 in the cylinder 5 forms an air chamber (allowance gap) 31 into which air can freely enter and exit. The axial distance between the air chambers 31 is longer than the stroke of the hydraulic damper 1 .

A spring receiving metal fitting 32 is arranged adjacent to the hydraulic chamber 27 side of the end member 19 , and a spring receiving ring member 33 is arranged so as to be fitted to the small diameter portion 6 a of the piston rod 6 . A nut 36 is screwed onto the tip of the small diameter portion 6a of the piston rod 6 via a washer 35. As shown in FIG. The spring receiving ring member 33 is in contact with the small diameter stepped portion 6b. The first and second piston valves 37 ₁ and 37 ₂ are arranged on both sides of the piston 10 so as to sandwich the piston 10 therebetween. The spring receiving ring member 33 , the piston 10 and both piston valves 37 ₁ and 37 ₂ are positioned with respect to the piston rod 6 by the nut 36 . The piston 10 divides the hydraulic chamber 27 into a rod-side oil chamber 27a and a non-rod-side oil chamber 27b. A coil spring 40 is compressed between the spring receiving metal fitting 32 and the spring receiving ring member 33 in the rod side oil chamber 27a.

As shown in detail in FIG. 4, the piston 10 has annular convex projections 45, 45 around the piston rod 6 on both side surfaces 10a, 10b. Annular hydraulic spaces 46, 46 are formed between the projection 45 and the boss portion 44 into which the piston rod small diameter portion 6a is fitted. The protrusion 45 and the boss portion 44 have the same protrusion height with respect to both side surfaces 10a and 10b of the piston, that is, are flush with each other. The piston 10 has a plurality of (three) pushing-side oil passages 47 communicating between the hydraulic space 46 on one side surface 10a and the outer diameter side of the projection 45 on the other side surface 10b, and the hydraulic space on the other side surface 10b. A plurality (three) of pull-side oil passages 49 are formed to communicate between 46 and the outer diameter side of projection 45 on one side surface 10a. Both of these oil passages 47 and 49 are of the same shape and number, and have a rectangular cross section elongated in the circumferential direction.

The first and second piston valves 37 ₁ and 37 ₂ are formed of annular plate springs, and valve seat plates 50 whose outer peripheral portions are in contact with the annular protrusions 45 , and valve seat plates 50 are attached to the annular springs. It has a disk spring 51 that presses against the protrusion 45 with a predetermined biasing force. The first and second piston valves 37 ₁ and 37 ₂ on the left and right sides of the piston 10 control the movement of oil through the oil passages 47 or 49 of both oil chambers 27 a and 27 b in response to one movement of the piston 10 . Acts as a regulating check valve. In addition, the first and second piston valves 37 ₁ and 37 ₂ control the flow of oil through the oil passages 47 or 49 of the oil chambers 27a and 27b to predetermined characteristics with respect to the movement of the other piston 10. do.

That is, as shown in FIG. 5, the _first and _second piston valves 37.sub.1 and 37.sub.2 control the movement speed of the piston 10 to be equal to or less than the predetermined value P against the oil flow in the direction opposite to the regulated flow. In the case of V, when the change in the load F for moving the piston is large (part S) and the moving speed V of the piston 10 is greater than the predetermined value P, the piston is moved in response to the change in moving speed. It has a damping force characteristic in which the load F change is small (T portion).
It should be noted that the predetermined value P is substantially indicated by dots in FIG. It is preferable to switch between the steep slope (S portion) and the gentle slope (T portion) in a narrow area like the point, but as shown by the chain line in FIG. , the predetermined value is a concept including this. In the present embodiment, each of the first and second piston valves 37 ₁ and 37 ₂ has two valve seat plates 50 and three coned disc springs 51 . , its number, its radial dimension, and its plate thickness are appropriately set. A pressure ring 53 is mounted on the outer peripheral surface of the piston 10 and has a predetermined oil-tightness and is in sliding contact with the inner peripheral surface of the cylinder 5 .

Since the present embodiment is constructed as described above, the hydraulic damper 1 can be installed between the pillar 2 and the beam 3 by attaching the fittings 13 and 17 to the pillar 2 and the beam 3 of the house with screws or the like, respectively. placed diagonally on the Ambient temperature changes affect the temperature of the oil in hydraulic chamber 27 causing it to expand or contract. Then, the float member 23, which is slidably supported by the cylinder 5 and constitutes a free piston, is subjected to the biasing force of the high-pressure gas in the gas chamber 29 according to the volume change of the hydraulic chamber 27 caused by the expansion or contraction of the oil. Move against or behind. As a result, even if the volume of the oil in the hydraulic chamber changes due to the ambient temperature, the float member 23 is moved by elastic compression of the high-pressure gas and absorbed. Also, without exerting excessive pressure on the seal ring 26, it is possible to prevent oil leakage and air intake from the above rings.

The piston rod 6 extends to the rod-side oil chamber 27a of the hydraulic chamber 27 so as to protrude outside the cylinder 5, and the piston rod 6 does not extend to the non-rod-side oil chamber 27b. A hydraulic pressure difference corresponding to the cross-sectional area of the piston rod 6 is generated. Therefore, due to the difference in area between the two oil chambers 27a and 27b with respect to the piston 10, a biasing force acts on the piston 10 in the direction in which it moves toward the piston rod 6. However, in the present embodiment, the rod-side oil chamber 27a The urging force of the spring 40 placed in the position acts on the piston 10, and the piston 10 is positioned between the fully compressed position of the spring 40 and the float member 23, which is a position where the urging force of the spring and the biasing force due to the area difference are balanced. It is held in an intermediate position.

The hydraulic pressure in the hydraulic chamber 27 based on the biasing force of the spring 40 acts on the float member 23, but the gas chamber 29 is filled with high-pressure gas, and the float member 23 is affected by the hydraulic pressure on the hydraulic chamber 27 side. The gas pressure on the side of the gas chamber 29 is balanced and held at a predetermined position.
As a result, the hydraulic damper 1 has a preset predetermined length in a natural state in which no external force is applied, and the hydraulic damper 1 of the predetermined length is formed between the column 2 and the beam 3 as described above. be mounted between In this state, the piston 10 is positioned approximately at the center of the strokeable range of the hydraulic chamber 27 .

When the building shakes due to an earthquake, the hydraulic damper 1 expands and contracts and receives a force that moves the piston 10, which is positioned substantially at the center of the stroke range, in the horizontal direction in FIG. When the piston 10 tries to move the hydraulic chamber 27 in the right direction (push direction), the oil in the non-rod side oil chamber 27b flows through the push side oil passage 47 into the left hydraulic space 46, and the first piston valve _The valve seat plate 50 of 371 is bent, and a force acts on the rod side oil chamber 27a in the direction of flow. Conversely, when the piston 10 attempts to move the hydraulic chamber 27 in the left direction (pull direction), the oil in the rod-side oil chamber 27a flows through the pull-side oil passage 49 into the right hydraulic space 46, and flows into the second hydraulic space 46. _The valve seat plate 50 of the piston valve 372 is flexed to apply a force in the direction of flow to the non-rod side oil chamber 27b.
At this time, when the piston 10 moves on the push side, the valve seat plate 50 of the _second piston valve 372 comes into contact with the annular projection 45, and the right hydraulic space 46 and the pull-side oil passage 49 move from the non-rod-side oil chamber 27b. is blocked from flowing to the rod-side oil chamber 27a. On the other hand, when the piston 10 moves on the pull side, the valve seat plate 50 of the _first piston valve 371 comes into contact with the annular protrusion 45 and moves from the rod side oil chamber 27a through the left hydraulic space 46 and the push side oil passage 47. As a result, the flow of oil flowing into the non-rod side oil chamber 27b is blocked.

When the earthquake is weak and the shaking of the building is small, the force acting on the hydraulic damper 1 in the expansion/contraction direction is also small and weak. In this case, the force with which the piston 10 tries to move within the hydraulic chamber 27 is also weak, and its speed is also slow. In the direction in which the hydraulic damper 1 contracts, that is, when the piston 10 moves toward the non-rod-side oil chamber 27b, the oil in the non-rod-side oil chamber 27b will flow into the left hydraulic space 46 through the push-side oil passage 47. However, since the force for moving the piston 10 is also weak and slow, the increase in hydraulic pressure acting on the left hydraulic space 46 is also small. Therefore, the _first piston valve 371 is held in a state (closed state) in which the valve seat plate 50 is substantially abutted against the annular projection 45 by the biasing force of the disc spring 51 .
Similarly, in the direction in which the hydraulic damper 1 extends, that is, when the piston 10 moves toward the rod-side oil chamber 27a, the oil in the rod-side oil chamber 27a will flow into the right hydraulic space 46 through the pull-side oil passage 49. However, the hydraulic pressure in the right hydraulic space 46 is also small, and the _second piston valve 372 is held in a state (closed state) in which the valve seat plate 50 is substantially in contact with the annular projection 45 .

Therefore, when the scale of the earthquake is relatively small and the energy acting on the building is small, the hydraulic damper 1 will not allow the oil to flow into the non-rod-side oil chamber 27b and the rod-side oil chamber 27a in both directions of contraction and expansion. Since the flow is restricted and the damping force characteristic is large, the telescopic movement of the hydraulic damper 1 receives a large resistance force. That is, when the moving speed of the piston 10 is slow, as shown in part S in FIG. , a large load (resistive force) acts on the hydraulic damper 1, and the hydraulic damper 1 is in a state close to a rigid body in which the gradient of the load F with respect to the piston speed V is large.

As a result, when the vibration energy is small and the shaking of the building is relatively small, such as when the scale of an earthquake is small or when a vehicle passes on a road, the vibration damping device A comprising the hydraulic damper 1 is a rigid body with respect to the building. It functions as a brace and a brace close to the building, suppressing the shaking of the building and improving the strength of the building. At this time, even if a concentrated load acts on the mounting portions 13, 17 of the column 2 and the beam 3 of the hydraulic damper 1, the mounting portions are not damaged because the vibration energy is relatively small. In addition, since the oil flowing between the two oil chambers 27a and 27b is subjected to a large resistance as it flows through a narrow passage such as the gap between the valve seat plate 50 and the annular projection 45, it is converted into heat and becomes hysteresis. Effectively absorbs the shaking energy of In this way, against small vibration energy that occurs relatively frequently, the vibration of the building is suppressed by the hydraulic damper with high damping force characteristics, and the quality of the structure such as the habitability of the building is improved. can do.

When the scale of the earthquake is large and the shaking of the building is large, the force acting on the hydraulic damper 1 in the expansion and contraction direction also increases, the stroke also increases and the speed increases. In this state, the piston 10 moves quickly with a large stroke, and when the piston 10 moves rightward, the oil pressure flowing from the non-rod side oil chamber 27b through the push side oil passage 47 into the left hydraulic space 46 is increased. As shown in FIG. 6, the valve seat plate 50 of the _first piston valve 371 has an annular outer peripheral portion against the spring force of the seat plate itself and the urging force of the disk spring 51 as a backup. bends in a direction away from the projection 45 of . Similarly, when the piston 10 moves leftward, the hydraulic pressure of the oil flowing from the rod-side oil chamber 27a through the pull-side oil passage 49 into the right hydraulic space 46 increases, and the valve of the _second piston valve 372 increases. The seat plate 50 bends in a direction away from the annular projection 45 .

As a result, the first and second piston valves 37 ₁ and 37 ₂ have flow paths C and D formed between the valve seat plate 50 and the annular projection 45 as shown in FIG. As the oil flows through the oil chambers 27a and 27b through C and D, the gradient of the load F with respect to the speed V becomes low and the damping force characteristic is low, as shown in the T portion of FIG. , stretches with low resistance. Therefore, in the event of a large earthquake, the hydraulic damper 1 dampens the shaking of the building with relatively low damping force characteristics and absorbs the seismic energy. At this time, as shown in FIG. 6, the outer diameter portion of the valve seat plate 50 is separated from the annular protrusion 45 along its entire circumference, and has a relatively large area between the annular protrusion 45 having a long peripheral length. The flow paths C and D are formed at once. Thereby, as shown in FIG. 5, the damping force characteristic of the hydraulic damper is instantaneously switched from the steep slope (S) to the gentle slope (T) at the predetermined value P.

In this state, the hydraulic damper 1 damps vibrations while expanding and contracting, so that an excessively large concentrated load does not act on the vicinity of the mounting brackets 13 and 17, and the mounting portions or the pillars 2 and beams 3 of the mounting portions are Reduces destruction. Also, the seismic energy is converted into heat and absorbed by the flow of a relatively large amount of oil flowing through the upper passages C and D while being throttled. Even if the building is deformed to the extent of plastic deformation due to the above earthquake, the hydraulic damper 1 balances the gas pressures of the spring 40 and the gas chamber 29 and the difference in area of the piston rod 6 after the earthquake is over. The chambers 27a and 27b are urged to return to their initial positions, and the building deformed to the plastic deformation is also returned to its original state (initial posture) by urging the hydraulic damper 1 to the stroke center position. As a result, when a large earthquake occurs infrequently, the vibration damping device A can effectively dampen the building, prevent the building from being destroyed, and improve the earthquake resistance.

The hydraulic damper 1 is provided with an air chamber (allowance gap) 31 on the side where the piston rod 6 projects from the cylinder 5 . It is in a clean state with rust, water, etc. removed. Therefore, even if the hydraulic damper 1 expands and contracts due to the above earthquake and the piston rod 6 slides against the through hole of the end member 19, the sliding contact portion remains in the clean state as described above, and the piston remains in the above-mentioned sliding contact. It is possible to prevent dust and the like adhering to the rod from damaging the seal 22 of the end member 19 and from entering the hydraulic chamber 27 by the dust and water.

By the way, it is undeniable that the hydraulic damper cannot exhibit its function for some reason. For example, in a hydraulic damper, if oil leaks from a cylinder, the damping function of the hydraulic damper cannot be exhibited. A possible cause of such oil leakage is repeated expansion and contraction of the oil due to changes in ambient temperature. In addition to this, damage to metal parts such as cylinders and piston rods and oil seal members, and deterioration due to changes over time can also be considered.

However, hydraulic dampers are installed in places such as the inside of walls that are out of direct view. Therefore, unless the wall is dismantled, the condition of the hydraulic damper cannot be directly checked, and if an abnormality occurs in the hydraulic damper for some reason, it is difficult to immediately recognize it.
Therefore, the vibration damping device A in this embodiment is configured to monitor the state of the hydraulic damper 1 installed at a position invisible from the outside in the structure, and to immediately recognize the occurrence of an abnormality in the hydraulic damper 1. . Furthermore, the damping device A in this embodiment is configured to be able to specify the installation position in the structure of the hydraulic damper 1 that has detected an abnormality.

Specifically, as shown in FIGS. 1 to 3, the piston rod 6 of the hydraulic damper 1 is provided with an oil leak sensor 60 . The oil leak sensor 60 detects oil that has leaked from the cylinder 5 for some reason and flowed along the piston rod 6 . The oil leak sensor 60 is installed near the lower end of the piston rod 6 in the vertical direction.
A detection signal (sensor signal) of the oil leak sensor 60 is transmitted to a monitoring device, which will be described later. The monitoring device has a function of judging abnormality of the hydraulic damper 1 based on the sensor signal of the oil leak sensor 60 and notifying the administrator or the like of the judgment result.

The oil leak sensor 60 includes a sheet of a predetermined color attached to the piston rod 6 and a sensor (such as a CCD camera) that detects changes in the color of the sheet. The sheet is a sheet coated or impregnated with a color developing agent that changes from a predetermined color (eg, white) to a specific color (eg, red or fluorescent) upon contact with the oil filled in the cylinder 5. When oil leakage occurs in the hydraulic damper 1 and the sheet absorbs the oil leaked from the cylinder 5, the color of the sheet changes from a predetermined color to a specific color.
The oil leak sensor 60 detects whether an oil leak has occurred by detecting whether the color of the seat has changed, and transmits the detection result to the monitoring device. In addition, the oil leak sensor 60 detects the amount of oil leak by detecting the degree of change in the color of the seat, the time after the color of the seat starts to change, etc., and transmits the detection result to the monitoring device. can.

The oil leak sensor 60 also includes a communication device capable of wireless communication with the monitoring device. Here, the method of wireless communication is not particularly limited, but, for example, communication conforming to the wireless LAN standard (for example, IEEE802.11 standard series) can be used. In other words, the oil leak sensor 60 is capable of Wi-Fi communication, for example, using a wireless LAN communication function.
The communication method used by the oil leak sensor 60 is not limited to the wireless LAN, and may be a wireless communication method such as near field communication (NFC) or Bluetooth (registered trademark). Furthermore, the communication system used by the oil leak sensor 60 is not limited to the wireless communication system, and may be a wired communication system. However, if the oil leak sensor 60 uses a wired communication method, additional wiring equipment is required.
A power source for the oil leak sensor 60 may be, for example, a dry battery.

In this embodiment, the oil leak sensor 60 is configured to include a sheet whose color changes when it comes into contact with oil and a sensor that detects the color change of the sheet. The configuration is not limited. For example, the oil leak sensor 60 may be composed of a member whose electrical characteristics change in response to oil. In this case, the member may be provided on the piston rod 6 and oil leakage may be detected by detecting changes in its electrical characteristics. The oil leak sensor 60 has a structure that does not interfere with the expansion and contraction of the hydraulic damper 1 , is installed at a position that does not interfere with the expansion and contraction of the hydraulic damper 1 , and is configured to detect oil leakage from the cylinder 5 .

An IC chip 61 is provided on the outer peripheral surface of the cylinder 5 of the hydraulic damper 1 . The IC chip 61 can be, for example, a Mu-chip. Mu-Chip is an RFID chip that uses RFID technology to read and transmit internal memory information without batteries. In other words, the μ-chip can receive radio waves generated by a dedicated reader, use the electromagnetic wave energy to drive circuits, and transmit memory information. The IC chip 61 is configured to be able to transmit identification information (for example, manufacturing serial number) for identifying the hydraulic damper 1 as the memory information.
The position where the IC chip 61 is installed is not limited to the outer peripheral surface of the cylinder 5, and may be any position that does not interfere with the expansion and contraction of the hydraulic damper 1. FIG.

FIG. 7 is a block diagram showing the configuration of a monitoring device 70 that monitors the state of the hydraulic damper 1. As shown in FIG. The monitoring device 70 includes an operation section 71 , a display section 72 , a control section 73 , a transmission section 74 , a recording section 75 and a power supply section 76 . The monitoring device 70 is composed of, for example, a personal computer (PC), and can be installed, for example, in a building where the owner or administrator of the building can operate it.
The operation unit 71 has switches and the like used for various inputs from the operator, including on/off and reset instructions for the monitoring device 70 . An operation input to the operation unit 71 is input to the control unit 73 . The display unit 72 includes a monitor such as a liquid crystal display (LCD), and displays the state of the oil leak sensor 60, the abnormality determination result, and the operation input from the operation unit 71. FIG.
The control section 73 acquires the sensor signal of the oil leak sensor 60 . The control unit 73 is composed of a microcomputer including a CPU, and executes processing for realizing the functions of the monitoring device 70 according to a predetermined program. Specifically, based on the sensor signal of the oil leak sensor 60, the control unit 73 determines the abnormality of the hydraulic damper 1 and determines the level of the abnormality, and instructs the transmission unit 74, which will be described later, to transmit the determination result. anomaly determination processing is performed. Details of the abnormality determination process will be described later.

The transmitter 74 has a wireless communication function. Further, the transmission unit 74 has an e-mail transmission function, and according to an instruction from the control unit 73, transmits an e-mail including the determination result of the abnormality determination process to a predetermined destination. Destinations include building owners and management companies. The transmission destination can be appropriately selected by the operator of the monitoring device 70 by operating the operation unit 71 . Information on the selected destination is recorded in the recording unit 75 . The method of setting the destination is not limited to the method of setting by the operator using the operation unit 71, and a method of transmitting the destination using wireless communication from an external device may be used.

Moreover, the communication method used by the transmission unit 74 is not limited to the wireless communication method, and may be a wired communication method. However, if the transmitter 74 uses a wired communication system, additional wiring equipment is required. Furthermore, the method of transmitting the determination result of the abnormality determination process is not limited to the method using the e-mail function, and may be a method using other data transmission functions such as facsimile or short message. Also, the transmission unit 74 may be configured to transmit audio data.

The recording unit 75 is configured by a memory device such as a USB memory, and records log information including determination results of abnormality determination processing by the control unit 73 . The log information recorded in the recording unit 75 can be used during maintenance or the like.
The recording unit 75 also functions as a holding unit that holds a database that manages the installation positions in the building of the plurality of hydraulic dampers 1 installed in the building. The database is, for example, a table that associates identification information (manufacturing serial number) of the hydraulic damper 1 with information on the installation position in the building. The database is recorded in the recording unit 75 prior to execution of the abnormality determination process.

The database recorded in the recording unit 75 is based on specification information (which hydraulic damper 1 is to be installed at which position in the building) regarding the installation position of the hydraulic damper 1 determined before construction of the building (at the time of construction). , can be created in advance. However, since there is a possibility that the hydraulic damper 1 may not be installed at the position according to the specifications for some reason, the database is preferably created after the hydraulic damper 1 is actually installed in the building.
For example, the database can be created by acquiring the identification information transmitted by the IC chip 61 and the position information of the IC chip 61 after the hydraulic damper 1 is installed. Specifically, the reading device 62 is brought close to the hydraulic damper 1 installed inside the wall from the outside of the wall of the building, and the identification information of the hydraulic damper 1 is read from the IC chip 61 . At this time, the reader 62 also acquires the position information of the IC chip 61 . Here, the position information of the IC chip 61 may be position information obtained by the IC chip 61 based on GPS information, or may be position information obtained by the reading device 62 based on GPS information. good.
The power supply unit 76 supplies power for driving each unit of the monitoring device 70 .

Next, the abnormality determination process executed by the monitoring device 70 will be specifically described with reference to FIG.
For example, the abnormality determination process shown in FIG. executed. However, the start timing and end timing of the processing in FIG. 8 are not limited to the above timings. The monitoring device 70 can realize each process shown in FIG. 8 by reading and executing a necessary program by the control unit 73 .

First, in S<b>1 , the monitoring device 70 acquires a sensor signal from the oil leak sensor 60 . For example, the monitoring device 70 transmits a signal requesting transmission of a sensor signal to the oil leak sensor 60 and acquires the sensor signal transmitted by the oil leak sensor 60 in response to the request from the monitoring device 70 . Thus, the oil leak sensor 60 is configured to receive a push notification from the monitoring device 70 and transmit a sensor signal.
Moreover, in this S1, the monitoring device 70 acquires the identification information of the hydraulic damper 1 . For example, the monitoring device 70 transmits a signal requesting transmission of identification information to the oil leak sensor 60 . Then, the oil leak sensor 60 reads identification information from the IC chip 61 in response to a request from the monitoring device 70 and transmits the read identification information to the monitoring device 70 . Monitoring device 70 acquires identification information transmitted from oil leak sensor 60 .

Next, in S2, the monitoring device 70 compares the sensor signal acquired in S1 with a preset reference value TH1. Here, the sensor signal is a value representing the amount of oil leakage in the hydraulic damper 1, such as the degree of change in color of the seal described above, and the larger the value, the larger the amount of oil leakage. The reference value TH1 is a threshold for determining whether the hydraulic damper 1 is normal, and can be set to TH1=0, for example. When the monitoring device 70 determines that the sensor signal is equal to or less than the reference value TH1, it determines that there is no oil leakage and the hydraulic damper 1 is normal, and proceeds to S3. On the other hand, when the monitoring device 70 determines that the sensor signal exceeds the reference value TH1, the monitoring device 70 determines that an oil leak has occurred, and proceeds to S9.

At S3, the monitoring device 70 starts a timer, and at S4 determines whether the value of the timer has reached a preset time period T1. Here, the period T1 can be set to one week, for example. When the monitoring device 70 determines that the timer value has not reached the period T1, it waits until the period T1 elapses, and when the timer value reaches the period T1, the process proceeds to S5. Note that the period T1 is not limited to one week. The period T1 may be a period corresponding to a detection interval in which the power supply (for example, a dry battery) of the oil leak sensor 60 can be used over the durability period of the vibration damping device A, and is shorter than one week, for example. A period may be sufficient and a period longer than one week may be sufficient.

In S5, the monitoring device 70 acquires the sensor signal of the oil leak sensor 60 as in S1, and proceeds to S6. In S6, similarly to S2, the monitoring device 70 determines whether the sensor signal acquired in S5 is equal to or less than the reference value TH1. When the monitoring device 70 determines that the sensor signal is equal to or less than the reference value TH1, it proceeds to S7, and when it determines that the sensor signal exceeds the reference value TH1, it proceeds to S9.

In S<b>7 , the monitoring device 70 notifies a predetermined destination using an e-mail from the transmission unit 74 that the hydraulic damper 1 is normal. The monitoring device 70 stores e-mail text data in advance in the internal memory or the like of the control unit 73, adds necessary information to the text data, and transmits the e-mail. Information to be added to text data includes time information and position information.
Specifically, the monitoring device 70 is configured to display (1) a sentence representing the state (normal/abnormal) of the hydraulic damper 1, (2) the date and time (year, month, day, hour, minute) of the transmission of the e-mail, or the hydraulic damper (3) Abnormality level (high/medium/low); (4) Identification information (manufacturing serial number) of hydraulic damper 1; (5) Building location (address); Log information including the installation position (wall position) in the building of the hydraulic damper 1 is sent by e-mail.

For the date and time data of (2) above, information of an internal timer that the control unit 73 has, for example, can be used. The abnormality level of (3) above can be set to "low" when the hydraulic damper 1 is normal. Also, if the hydraulic damper 1 has an abnormality but the level is such that it is sufficient to observe the progress for a while, the abnormality level is set to "medium", and if the level requires immediate repair, the abnormality level is set to "high". can be The information regarding the installation location of (6) above can be specified by referring to the database recorded in the recording unit 75 based on the identification information of the hydraulic damper 1 .

Furthermore, in S7, the monitoring device 70 records the above log information in the recording unit 75 as history information. This history information can be fed back to the creation of a maintenance plan for the vibration damping device A and the design of the next model of the vibration damping device A.
In S8, the monitoring device 70 resets the timer and returns to S4.
In this way, while the hydraulic damper 1 is determined to be normal, the monitoring device 70 acquires the sensor signal of the oil leak sensor 60 every period T1 (for example, one week), and detects the state of the hydraulic damper 1. to monitor. When the monitoring device 70 detects that an abnormality has occurred in the hydraulic damper 1 (No in S2 or S6), the monitoring device 70 executes the processing from S9 onwards.

In S9, the monitoring device 70 determines whether or not the sensor signal is greater than or equal to a preset reference value TH2. Here, the reference value TH2 determines whether the abnormality level of the hydraulic damper 1 is a level that requires immediate repair (abnormality level: high) or a level that allows follow-up observation (abnormality level: medium). is the threshold for When the monitoring device 70 determines that the sensor signal is below the reference value TH2, the monitoring device 70 determines that the abnormality level is "medium", proceeds to S10, and determines that the sensor signal is equal to or greater than the reference value TH2. If so, the abnormality level is determined to be "high" and the process proceeds to S14.

In S10, the monitoring device 70 notifies a predetermined transmission destination using an e-mail from the transmission unit 74 that an abnormality has occurred in the hydraulic damper 1 and that follow-up observation is necessary. At this time, the monitoring device 70 sets the sentence (1) in the above-described log information as a sentence indicating that the hydraulic damper 1 needs to be monitored, and sets the abnormality level in (3) to "medium". Send an email.
In S11, the monitoring device 70 resets the timer and proceeds to S12. In S12, the monitoring device 70 determines whether or not the value of the timer has reached the preset period T2. Here, the period T2 is a period shorter than the period T1, and can be set to three days, for example. Then, when the monitoring device 70 determines that the period T2 has not been reached, the monitoring device 70 waits until the period T2 elapses, and shifts to S13 when the period T2 is reached. Note that the period T2 is not limited to three days, and can be arbitrarily set as long as it is a period shorter than the period T1.
In S13, the monitoring device 70 acquires the sensor signal of the oil leak sensor 60, as in S1, and returns to S9.

In S14, the monitoring device 70 notifies a predetermined transmission destination from the transmission unit 74 using an e-mail that an abnormality has occurred in the hydraulic damper 1 and immediate repair is required. At this time, the monitoring device 70 sets the sentence (1) in the above log information to a sentence indicating that the hydraulic damper 1 needs to be repaired immediately, and sets the abnormality level (3) to "high". Send an email as FIG. 9 shows an example of the e-mail sent in S14.
In S15, the monitoring device 70 determines whether or not the hydraulic damper 1 has been restored to its normal state. For example, when the monitoring device 70 confirms that the abnormal hydraulic damper 1 has been repaired or replaced according to an instruction from the operator, or confirms that the sensor signal of the oil leak sensor 60 has become a normal value. Then, it is determined that the hydraulic damper 1 has been restored to its normal state. The monitoring device 70 waits until the hydraulic damper 1 is restored to its normal state, and when it determines that it has been restored to its normal state, proceeds to S3.

As described above, the vibration damping device A in this embodiment includes a vibration damping member (hydraulic damper 1) installed at a position that cannot be visually recognized from the outside in the structure. The damping device A includes an oil leak sensor 60 as a detection unit that detects the state of the hydraulic damper 1, and determines whether the hydraulic damper 1 is abnormal based on the state of the hydraulic damper 1 detected by the oil leak sensor 60. do. Also, the vibration damping device A identifies the installation position in the structure of the hydraulic damper 1 determined to be abnormal. Then, the vibration damping device A transmits to the external device log information including at least the result of the abnormality determination of the hydraulic damper 1 and the information regarding the installation position of the hydraulic damper 1 determined to be abnormal.

In this way, the damping device A notifies the owner or manager of the building whether or not there is an abnormality in the hydraulic damper 1 installed at a position that cannot be visually confirmed, such as inside the wall of the building, and the level of the abnormality. Appropriate notification can be provided. Moreover, the damping device A can also notify the installation position of the hydraulic damper 1 in which the abnormality has occurred. Therefore, the owner or manager of the building can easily recognize that an abnormality has occurred in the hydraulic damper 1, and can appropriately grasp the installation location of the hydraulic damper 1 in which the abnormality has occurred. It becomes possible to repair or replace the damper 1 quickly and accurately. Thereby, the damping device A can appropriately maintain the function of the hydraulic damper 1 .

Here, the oil leakage sensor 60 is a sensor that detects oil leakage from the cylinder 5 of the hydraulic damper 1 and is installed near the lower end of the piston rod 6 in the vertical direction. Therefore, the vibration damping device A can appropriately detect whether or not there is oil leakage from the cylinder 5, and can appropriately determine whether or not the hydraulic damper cannot exert its vibration damping function. .
Also, the damping device A determines the level of abnormality of the hydraulic damper 1 based on the amount of oil leakage detected by the oil leakage sensor 60 . The hydraulic damper 1 maintains its function as the hydraulic damper 1 until the amount of oil leakage reaches a certain amount. Therefore, by monitoring the amount of oil leakage, it is possible to determine whether the level of abnormality is a level at which progress should be observed or at a level at which repair or replacement is required. As a result, the hydraulic damper 1 can be prevented from being repaired or replaced unnecessarily.

Furthermore, the vibration damping device A can shorten the detection interval of oil leakage by the oil leakage sensor 60 as the level of abnormality of the hydraulic damper 1 is higher. As a result, when the abnormality level of the hydraulic damper 1 is low, the driving of the oil leak sensor 60 can be suppressed and the power consumption can be reduced. Further, after the oil leak is detected, the sensor signal is acquired from the oil leak sensor 60 at short intervals, and the state of the hydraulic damper 1 can be monitored. can be appropriately determined and a prompt response can be made.
In addition, the monitoring device 70 measures a timer to determine the detection timing of the oil leak sensor 60 and sends a push notification requesting the oil leak sensor 60 to send a sensor signal. The oil leak sensor 60 receives the push notification from the monitoring device 70 and transmits a sensor signal to the monitoring device 70 . With such a configuration, the oil leak sensor 60 does not need to be driven all the time, and power consumption can be reduced.

Like the hydraulic damper 1, the oil leak sensor 60 for detecting the state of the hydraulic damper 1 is installed inside a wall or the like of the structure that is not visible from the outside. Therefore, the oil leak sensor 60 is required to be maintenance-free over the endurance period of the hydraulic damper 1 . Moreover, in general houses, for example, it may be difficult to draw wiring or arrange power sources inside the walls. The oil leak sensor 60 in this embodiment has a configuration that can realize low power consumption, and can be driven by, for example, a dry battery. Therefore, wiring and a large-sized power source are not required inside the wall, and maintenance-free operation can be realized over the durability period of the hydraulic damper 1 .

Further, the vibration damping device A records a database that associates the identification information of the hydraulic damper 1 with the installation position of the hydraulic damper 1, and can specify the installation position of the hydraulic damper 1 by referring to the database. . Specifically, the hydraulic damper 1 is provided with an IC chip 61 that transmits identification information of the hydraulic damper 1, and based on the identification information transmitted from the IC chip 61, the database is referred to, and the hydraulic damper 1 is identified. Identify the installation location. Therefore, the installation position of the hydraulic damper 1 can be easily specified.

Furthermore, the vibration damping device A has a creation unit that creates the database, and after the hydraulic damper 1 is installed inside a wall or the like, the database is created using the identification information transmitted from the IC chip 61 . a highly reliable database can be obtained. Therefore, the installation position of the hydraulic damper 1 can be specified more appropriately.
The hydraulic damper 1 is installed inside a wall or the like, and in order to repair or replace the hydraulic damper 1 in which an abnormality has occurred, it is necessary to dismantle the wall at the corresponding position. By appropriately specifying the installation position of the hydraulic damper 1 in which an abnormality has occurred, it is possible to avoid a situation in which the wall corresponding to the hydraulic damper 1 that is in normal condition is erroneously dismantled.

In addition, the vibration damping device A can transmit log information including abnormality determination results and the like to a predetermined destination by e-mail. Therefore, the state of the hydraulic damper 1 can be appropriately notified to the owner or administrator of the building in a remote location.
Furthermore, the vibration damping device A can record the above log information in a recording unit 75 such as a USB memory. As a result, the recorded log information can be effectively used for creating a maintenance plan for the vibration damping device A and for designing the next model of the vibration damping device A.

(Modification)
In the above embodiment, the case where oil leakage is detected as an abnormality of the hydraulic damper 1 has been described, but other abnormalities such as a decrease in the elastic force of the spring 40 may be detected.
In the above-described embodiment, the monitoring device 70 determines two levels of abnormality (observation/repair) as the level of abnormality of the hydraulic damper 1. However, three or more levels of abnormality are determined. You may make it
Furthermore, in the above-described embodiment, means for detecting an abnormality in the oil leak sensor 60 itself may be provided, and when an abnormality in the oil leak sensor 60 itself is detected, notification may be given.

Further, in the above embodiment, a database that associates the identification information of the hydraulic damper 1 with the information about the installation position in the building is recorded in the recording unit 75, and the database is stored based on the identification information of the hydraulic damper 1. The case of identifying the installation position of the hydraulic damper 1 has been described with reference to FIG. However, the oil leak sensor 60 may transmit the position information of the hydraulic damper 1 together with the sensor signal to the monitoring device 70 . In other words, it is not always necessary to record the database in the recording unit 75 . Moreover, it is not always necessary to install the IC chip 61 on the hydraulic damper 1 .

Moreover, in the above-described embodiment, the case where the above database is used to identify the installation position of the hydraulic damper 1 has been described, but the method for identifying the installation position of the hydraulic damper 1 is not limited to the above. For example, when the monitoring device 70 detects an abnormality in the hydraulic damper 1 , the monitoring device 70 may instruct a transmission unit such as the IC chip 61 or the like installed in the hydraulic damper 1 to transmit a predetermined abnormality signal. In this case, the installation position of the hydraulic damper 1 in which the abnormality has occurred can be identified by capturing the abnormality signal transmitted from the transmission unit by short-range communication or the like at a position close to the hydraulic damper 1 on the outside of the wall. can be done.

The monitoring device 70 may be configured to be capable of notifying the result of the abnormality determination of the hydraulic damper 1 and the information regarding the installation position of the hydraulic damper 1 in which the abnormality has occurred. 8 is not limited to the processing shown in FIG. For example, the monitoring device 70 grasps in advance the installation positions of all the hydraulic dampers 1 installed in the building, sequentially designates the hydraulic dampers 1 one by one, and receives a sensor signal from the oil leak sensor 60. , an abnormality determination may be performed. Also in this case, it is possible to notify both the abnormality determination result and the information regarding the installation position of the hydraulic damper 1 in which the abnormality has occurred.
Furthermore, in the above embodiment, the case where the identification information and installation position of the hydraulic damper 1 are notified by e-mail even when the hydraulic damper 1 is normal has been described. The identification information and installation position of the hydraulic damper 1 in which an abnormality has occurred may be notified by e-mail.

In the above embodiment, the monitoring device 70 changes the detection interval of the oil leak sensor 60 according to the abnormality level of the hydraulic damper 1, but the detection interval is constant regardless of the abnormality level. may However, in this case, the detection interval is preferably a period suitable for follow-up observation of the hydraulic damper 1 in which an abnormality has occurred.
Furthermore, in the above embodiment, the case where the monitoring device 70 executes the abnormality determination process shown in FIG. Where available, the oil leak sensor 60 may perform similar functions to the monitoring device 70 described above. That is, the oil leak sensor 60 may have a configuration corresponding to the control section 73 , the transmission section 74 and the recording section 75 of the monitoring device 70 .

Further, in the above embodiment, the damping member is a hydraulic damper. A damper using plastic deformation, a damper using a friction material, or the like may be used. In these cases as well, it is possible to detect the state of the damping member (rubber hardened state, metal deformation state, etc.) and determine whether or not the damping member is in a state in which it cannot exhibit its performance.

Reference Signs List 1 hydraulic damper 2 structural member (column) 3 structural member (beam) 5 cylinder 6 piston rod 10 piston 60 oil leak sensor 61 IC chip 70 monitoring device 73... control section, 74... transmission section

Claims (10)

A monitoring device for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure,
an acquisition unit that acquires state information indicating the state of the damping member and a manufacturing serial number of the damping member;
a determination unit that determines an abnormality of the vibration damping member based on the state information of the vibration damping member;
a specifying unit that specifies information about the installation position of the vibration damping member determined to be abnormal based on management information in which the manufacturing serial number of the vibration damping member and information about the installation position are associated;
An output unit for outputting log information including at least the determination result by the determination unit, the manufacturing serial number of the vibration damping member, and the information on the installation position specified by the specifying unit. Device. A monitoring device for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure,
an acquisition unit for acquiring abnormality information indicating an abnormality of the vibration damping member and a manufacturing serial number of the vibration damping member;
a specifying unit that specifies information about the installation position of the damping member from which abnormality information has been acquired, based on management information in which the manufacturing serial number and information about the installation position are associated;
an output unit configured to output log information including at least the abnormality information, the manufacturing serial number of the vibration damping member that acquired the abnormality information, and the information regarding the installation position identified by the identification unit. monitoring equipment. The determination unit has a reference value for determining a level of abnormality, and compares the reference value with the state information of the vibration damping member to determine the level of abnormality of the vibration damping member. A monitoring device according to claim 1 . 4. The monitoring apparatus according to any one of claims 1 to 3 , wherein the output unit includes a transmission unit that transmits the log information to a pre-registered destination. 5. The monitoring apparatus according to any one of claims 1 to 4 , further comprising a recording unit that records the log information. a plurality of damping members installed at positions that cannot be visually recognized from the outside in the structure;
a detection unit provided in the vibration damping member and configured to detect the state of the vibration damping member;
a transmission unit provided on the vibration damping member for transmitting state information indicating the state of the vibration damping member detected by the detection unit and a manufacturing serial number of the vibration damping member;
A monitoring system comprising the monitoring device according to claim 1 . a plurality of damping members installed at positions that cannot be visually recognized from the outside in the structure;
a detection unit provided in the vibration damping member and configured to detect an abnormal state of the vibration damping member;
a transmission unit provided in the vibration damping member and configured to transmit abnormality information indicating the abnormality in the vibration damping member and a manufacturing serial number of the vibration damping member when the detection unit detects an abnormality;
A monitoring system comprising the monitoring device according to claim 2 . A monitoring method for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure,
an acquisition step of acquiring state information indicating the state of the damping member and a manufacturing serial number of the damping member;
a determination step of determining an abnormality of the damping member based on the state information of the damping member;
an identifying step of identifying information regarding the installation position of the vibration damping member determined to be abnormal based on management information in which the manufacturing serial number of the vibration damping member and information regarding the installation position are associated;
An output step of outputting log information including at least the determination result in the determination step, the manufacturing serial number of the vibration damping member, and the information on the installation position specified in the specifying step. . A monitoring method for monitoring the state of a plurality of damping members installed at positions that cannot be visually recognized from the outside in a structure,
an acquisition step of acquiring abnormality information indicating an abnormality of the vibration damping member and a manufacturing serial number of the vibration damping member;
an identifying step of identifying information about the installation position of the damping member for which abnormality information has been acquired, based on management information in which the manufacturing serial number and information about the installation position are associated;
and an output step of outputting log information including at least the abnormality information, the manufacturing serial number of the vibration damping member from which the abnormality information was obtained , and the information regarding the installation position identified in the identification step. monitoring method. A program for causing a computer to execute the monitoring method according to claim 8 or 9 .

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