Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
  • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
  • G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
  • G01H13/00—Measuring resonant frequency
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
  • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
  • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
  • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
  • G01V1/01—Measuring or predicting earthquakes
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
  • G08B21/02—Alarms for ensuring the safety of persons
  • G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
  • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
  • G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
  • G01V2210/00—Details of seismic processing or analysis
  • G01V2210/10—Aspects of acoustic signal generation or detection
  • G01V2210/12—Signal generation
  • G01V2210/123—Passive source, e.g. microseismics
  • G01V2210/1232—Earthquakes

Definitions

• the present invention relates to a vibration information collecting device that measures the vibration of a building due to an earthquake or the like, and vibration information collecting system that collects information from a plurality of vibration information collecting devices.
• Patent Literature 1 JP2015-1494A
• An object of the present invention is therefore to improve the general earthquake preparedness and mitigate hazards due to earthquakes.
• a vibration information collecting device comprising at least: a case; a processing unit supported by the case; and a power supply for supplying power to the processing unit; the processing unit is having at least: a sensor that measures acceleration or velocity; a signal processing unit for obtaining vibration information from the acceleration or the velocity measured by the sensor; a communication unit for connecting the signal processing unit to a network; and wherein the vibration information collecting device comprises a fixing element to attach the vibration information collecting device to a facility.
• the vibration information collecting system which analyzes the vibration information sent from the vibration information collecting device and several vibration information collecting devices which can be produced small and cheap and can be installed easily so as to attach to a facility. Furthermore, the approach according to this invention allows for an increase of scalability for approaching very large sensor networks by following a decentralized approach according to which processing resources may be outsourced from a central processing server to various vibration information collecting devices that perform the determining of e.g. frequency shifts vibration information and respective analysis.
• the vibration information collecting device due to the small and cheap production in combination with an easy attachment of the vibration information collecting device to a facility it is possible to increase coverage with vibration information collecting devices organized in large networks, which may be supervised by a central server. In this way the monitoring of vibration is significantly improved and earthquakes may be recognized early and reliably. Thus, the general earthquake preparedness is improved. Therefore, the present invention provides a significant contribution to hazard mitigation and earthquake preparedness.
• the fixing element may be the power supply that comprises a plug protruding from the case for being plugged into a power outlet of the facility in order to attach the vibration information collecting device to the facility.
• This provides the advantage that the vibration information collecting device may be easily attached to the facility using an already existent infrastructure and at the same time the vibration information device may be supplied with power directly without the need of further wires. Due to the attachment, the vibration of the facility are transferred to the vibration information collecting device. Therefore, the usability by users is improved such that the coverage density of vibration information collecting devices in a facility or over a large area is improved. In this way the general monitoring of earthquakes may be improved in particular in that the monitoring is more accurate and can warn users early.
• the fixing element may comprise at least one screw hole integrally formed with the case in order to attach the vibration information collecting device to the facility.
• the vibration information collecting device may be firmly attached to the wall, in a manner that may be implemented by a variety of users, so that coverage density of vibration information collecting devices in a facility or over a large area is improved similar to the fixing element being the power supply.
• the facility may comprise a wall of a structural element, a power supply of a street light.
• a wall of a structural element may be a wall of a house, skyscraper etc ...
• the facility may be a street light.
• streetlights have an electricity supply which may be reached from the outside e.g. for maintenance. This electricity supply may be used to install an respective vibration information collecting device.
• the facility may be a guide light, for example of an airport, which usually have electric supply. In all those cases, the density of vibration information collecting device may be increased so as to improve the monitoring of earthquakes.
• the vibration information collecting device may comprise a storage unit configured to store at least one or all of an identification code uniquely identifying the vibration information collecting device, an installation position of the vibration information collecting device, the vibration information.
• the vibration information collecting device may store information over a period of time such that the vibration information collecting device may transmit the information in certain time intervals or may keep data until they may be manually accessed e.g. via a USB stick connection or the vibration information collecting device may keep and collect data over a period of time.
• the identification code allows to uniquely identify vibration information obtained by a specific vibration information collecting device such that the vibration information may be assigned to a specific vibration information collecting device.
• the installation position may not only include coordinates in terms of a location, but also an identification of a facility within which the vibration information collecting device is installed or a location within the facility such as a floor or relative position in the facility. In this way, the position where vibrations occur are detected or a vibration of a specific facility and/or a vibration in a specific facility may be detected.
• the processing unit may be configured to determine a natural frequency of the facility by transforming the measured acceleration or the measured velocity into a frequency space.
• the natural frequency may be a measure of the state of a facility. External vibration such as earthquakes cause facilities to vibrate with an amplitude and an acceleration at the natural frequency. By determining the natural frequency the state of the facility may be easily and reliably determined.
• the natural frequency of a facility may be determined by the processing unit of the vibration information collecting device that is attached to the facility.
• the determining is decentralized, i.e. the determining and the processing is not performed at a central server but at a plurality of vibration information collecting devices so that data traffic is reduced, time is saved and calculation power is spread.
• the processing unit may be configured to monitor the natural frequency of the facility over a period of time and determine that the facility is in a critical state when the natural frequency shifts by a predetermined amount.
• the processing unit may be configured to transmit at least one or all of the identification code, the installation position and the vibration information using the communication unit via the network to a vibration data processing server.
• the vibration information processing server may collect data (such as the identification code, the installation position and the vibration information) of the entire network. So it is possible to monitor large areas at a single location and coordinate precautionary actions.
• the processing unit may be configured to transmit at least one or all of the identification code, the installation position and the vibration information when a value included in the vibration information exceeds a threshold, wherein preferably the value is a peak ground acceleration or peak ground velocity or short-term-average over long-term-average (STA/LTA) or an instrument intensity scale for shaking such as a spectral intensity or the Japanese “Shindo” (JMA intensity).
• a threshold wherein preferably the value is a peak ground acceleration or peak ground velocity or short-term-average over long-term-average (STA/LTA) or an instrument intensity scale for shaking such as a spectral intensity or the Japanese “Shindo” (JMA intensity).
• the processing unit may be configured to transmit at least one or all of the identification code, the installation position and the vibration information when the processing unit has determined that the facility is in a critical state.
• the network may be the public internet and/or a private virtual network.
• VPN may for example be restricted only to certain areas or companies such that the usage is more secure in terms of data security.
• the processing unit may be configured to receive a command over the network from a central control server using the communication unit, wherein the command includes instructions to control the vibration information collecting device or a group of vibration information collecting devices and/or the command includes instructions to monitor the vibration information over a period of time.
• the signal processing unit may be configured to set a sampling rate of the sensor, and/or to adjust a sensitivity of the sensor.
• the signal processing unit may be configured to set the threshold.
• the signal processing unit may be configured to set the predetermined amount.
• the signal processing unit may be configured to perform the transmission of at least one or all of the identification code, the installation position and the vibration information to the vibration data processing server.
• the processing unit may be configured to monitor the vibration information over a period of time and to store or transmit to the vibration information processing server monitored vibration information.
• the vibration information collecting device may comprise a status light emitting device and/or an acoustic buzzer, the light emitting device and the acoustic buzzer being connected to the processing unit.
• the status light emitting device and/or an acoustic buzzer allow to warn residents e.g. of an upcoming earthquake shaking or that the facility is in a critical state e.g. via a warning light or via acoustic sounds.
• the processing unit may be configured to transmit a signal to the light emitting device and/or the acoustic buzzer to output a warning signal when the processing unit has determined that the facility is in the critical state.
• the processing unit may be configured to transmit a signal to the light emitting device and/or the acoustic buzzer to output a warning signal when a value included in the vibration information exceeds a threshold.
• the processing unit may be configured to transmit a signal to the light emitting device and/or the acoustic buzzer to output a warning signal upon receipt of the control command.
• the immediate environment around a certain information collecting device may be warned as soon as a determination is made at the particular information collecting device. In this way precious time may be saved, because the processing and the determination is made at the particular information collecting device and respective data do not have to be transmitted to a central server. Therefore time can be saved.
• warning upon receiving a command allows to control warning from an external source and thus warning of residents may be coordinated from a single source. E.g. if vibration is detected in one area another close area may be informed of an upcoming earthquake shaking.
• the processing unit may be configured to receive from an update server update data over-the-air, OTA, using the communication unit, wherein the update data includes data for updating an operating system running on the processing unit and/or on the sensor.
• the processing unit may be configured to update the operating system on the processing unit.
• the processing unit may be configured to validate the received update data using a key exchange protocol.
• the vibration information may include at least one of a vibration waveform, a running spectrum, a ratio of long term average (LTA) to short term average (STA), dominant frequency of vibration, embedded deep learning for earthquake waveform characterization or the signal’s permutation entropy.
• LTA long term average
• STA short term average
• the device signal processing unit is extensible for processing other vibration analysis through software plugins.
• the signal processing unit may synchronizes time using NTP (Network Time Protocol) via the communication unit and/or synchronizes time using GNSS (Global Navigation Satellite System) via a direct connection of the GNSS to the processing unit optionally comprising a GNSS receiver.
• NTP Network Time Protocol
• GNSS Global Navigation Satellite System
• the power supply unit may have a backup power supply.
• the present invention may further comprise a vibration information collecting system comprising: a plurality of vibration information collecting devices; a vibration information processing server connected to the plurality of vibration information collecting devices via the network; wherein the plurality of vibration information collecting devices are configured to transmit to the vibration information processing server at least one of an identification code, an installation position, a time history of vibration information/data and a vibration information using the communication unit via the network to a vibration data processing server.
• the vibration information collecting system may further comprise a central control server connected to each of the plurality of vibration information collecting devices, wherein the central control server is configured to transmit the command to at least one of the plurality of vibration information collecting device or to transmit the command to a subgroup of the plurality of vibration information collecting devices.
• the vibration information collecting system may further comprise an update server connected to each of the plurality of vibration information collecting devices, wherein the central control server is configured to transmit the update data to at least one of the plurality of vibration information collecting device or to transmit the command to a subgroup of the plurality of vibration information collecting devices.
• Fig. 1 shows a vibration information collecting device of the present embodiment.
• Fig. 2 shows a block diagram of the vibration information collecting device.
• Fig. 3 shows the ratio of long-term average LTA and short-term average STA of amplitude when an earthquake occurs.
• Fig. 4 shows the vibration information collecting system of the present embodiment.
• Fig. 5 shows the natural frequency of a building vibrated with a shaking table.
• FIG. 1 shows a vibration information collecting device 1 of the present embodiment.
• FIG. 2 shows a block diagram of the vibration information collecting device 1.
• the vibration information collecting device 1 includes at least a processing unit 3 and a fixing element to attach the vibration information collecting device to a facility.
• the fixing element may be a power supply unit 8 housed in the case 2 or the fixing element may be a screw hole integrally formed with the case to attach vibration information collecting device to the facility.
• the fixing element attaches the vibration information collecting device, in particular the case 2, to the wall of a facility so that the vibration information collecting device is firmly attached to the facility so that vibration of the facility are transferred to the collecting device 1.
• the processing unit 3 includes at least an acceleration or velocity sensor 4, a signal processing unit 5, a communication unit 6, and a storage unit 7.
• a facility may be a house so that the vibration information collecting device may be attached to a conventional power plug provided at the wall of the house. Furthermore, the facility may be power supply of a streetlight such that the streetlight may be easily equipped with a vibration information collecting device 1. Furthermore, the facility may be a guidelight. [0063]
• the case 2 of this embodiment uses plate-like members arranged in parallel. The case 2 is small and lightweight. The case 2 may be formed in a box shape surrounding all the parts. The size of case 2 is preferably about 100 mm to 110 mm in length, 45 mm to 50 mm in width, and about 30 mm to 35 mm in height.
• the vibration information collecting device hovers over the ground.
• the processing unit 3 includes at least an acceleration or velocity sensor 4, a signal processing unit 5, a communication unit 6 and a storage unit 7, and is supported by the case 2.
• the processing unit 3 of the present embodiment is formed from a printed circuit board and electronic components such as a chip installed on the printed circuit board.
• the acceleration or velocity sensor 4, the signal processing unit 5, the communication unit 6, the storage unit 7, and the like are formed from electronic circuits.
• the signal processing unit 5 is formed on a thin printed circuit board that is fixed to the inside of the case 2 with screws or the like.
• the signal processing unit 5 may be integrated with the acceleration or velocity sensor 4 installed in MEMS (Micro Electro Mechanical Systems).
• the signal processing of the signal processing unit 5 is composed of a module using an SoC (System on Chip) such as a “Raspberry Pi” formed as an 1C chip.
• SoC System on Chip
• the signal processing unit 5 synchronizes time using NTP (Network Time Protocol), GNSS (Global Navigation Satellite System), or the like.
• the communication unit 6 is composed of a module of electronic components formed on a thin flat printed circuit board fixed to the inside of the case 2 with screws or the like.
• the communication unit 6 enables the vibration information collecting device 1 to be connected to the Internet by wireless such as Wi-Fi or wired such as LVVN.
• the storage unit 7 is an electronic medium such as a micro SD card, or alike.
• the storage unit 7 is installed on a thin flat plate-like printed circuit board that is fixed to the inside of the case 2 with screws or the like.
• the acceleration or velocity sensor 4, the signal processing unit 5, the communication unit 6, and the storage unit 7 may each be configured on one printed circuit board, or may be configured on one or two printed circuit boards collectively. Further, an external connection terminal such as USB may be provided on the compute platform.
• the power supply unit 8 includes an adapter 8b having a plug 8a that connects to an outlet, and a supply unit 7b that electrically connects the processing unit 3 such as the adapter 8b to the signal processing unit 5, the communication unit 6, and the storage unit 7.
• the plug 8a of the adapter 8b protrudes from the case 2 so as to be plugged into the outlet.
• the supply unit 8c uses a USB terminal or the like at one end and a micro USB terminal or the like at the other end.
• the power supply unit 8 preferably has a backup power source such as a charging battery that supplies power to the processing unit 3 such as the signal processing unit 5, the communication unit 6, and the storage unit 7, so that it can be used even during a power failure. Further, the power supply unit 8 may have an outlet into which a plug of another electrical device can be inserted.
• a backup power source such as a charging battery that supplies power to the processing unit 3 such as the signal processing unit 5, the communication unit 6, and the storage unit 7, so that it can be used even during a power failure.
• the power supply unit 8 may have an outlet into which a plug of another electrical device can be inserted.
• the vibration information collecting device 1 of the present embodiment is small and can be manufactured inexpensively and can be easily installed. Moreover, the vibration information collecting device 1 of the present embodiment can obtain vibration information even during a power failure.
• the vibration is measured by the acceleration or velocity sensor 4.
• the acceleration or velocity sensor 4 of the present embodiment is configured such that the sampling rate 100Hz/200 Hz as well as sensor sensitivity can be changed through the device software.
• the resolution of the acceleration or velocity sensor 4 may be 16 bits, and the measurement range may be ⁇ 2G
• the signal processing unit 5 calculates the ratio of long term average (LTA) and short term average (STA) of vibration waveform, running spectrum, and amplitude, or , You may obtain vibration information such as the dominant frequency of vibration and estimate the cause of vibration.
• LTA long term average
• STA short term average
• the signal processing unit 5 may determine a natural frequency of the facility.
• the natural frequency is determined by transforming the measured acceleration of the measured velocity into the frequency space.
• the processing unit may be configured to monitor the natural frequency of the facility. When the natural frequency of the facility shifts this may be an indication that the facility is in a critical state, i.e. about to collapse.
• the vibration information collecting device 1 of the present embodiment can obtain information on various vibrations. Moreover, the vibration information collecting device 1 of the present embodiment can synchronize vibration information with other vibration information collecting devices 1.
• the vibration information collecting device may comprises a status light emitting device and/oran acoustic buzzer, the light emitting device and the acoustic buzzer being connected to the processing unit wherein the processing unit is configured to transmit a signal to the light emitting device and/or the acoustic buzzer to output a warning signal, when the processing unit has determined that the facility is in the critical state, or when a value included in the vibration information exceeds a threshold, or upon receipt of the control command.
• FIG. 3 shows the ratio of long-term average LTA and short-term average STA of amplitude when an earthquake occurs.
• FIG. 3(a) shows an example of the vertical movement speed when an earthquake occurs.
• FIG. 3(b) shows the long time average LTA and short time average STA of the amplitude.
• FIG 3(c) shows the ratio of the long time average LTA to the short time average STA of the amplitude.
• the signal processing unit 5 obtains a vertical velocity waveform of vibration as shown in FIG3(a). Subsequently, a long-time average LTA and a short-time average STA as shown in FIG.3(b). Next, the ratio of the long time average LTA and the short time average STA as shown in FIG3(c). In this example, an earthquake is estimated when STA / LTA is 3 or more.
• earthquakes and other vibrations such as lightning strikes and trains may be identified from the relationship between the time and frequency of the running spectrum of the vibration waveform obtained from the acceleration sent from the acceleration or velocity sensor 4.
• the type of vibration may be identified from the dominant frequency of the vibration waveform obtained from the acceleration sent from the acceleration or velocity sensor 4.
• the storage unit 7 stores in advance an identification number for distinguishing from other vibration information collecting devices 1 and an installation position of the vibration information collecting device 1 which can be configured by the user. Further, the storage unit 7 stores vibration information obtained by the signal processing unit 5.
• the communication unit 6 connects the signal processing unit 5 of the vibration information collecting device 1 to an external network such as the Internet and/or a VPN network.
• the communication unit 6 transmits the identification code stored in the storage unit 7, the installation position of the vibration information collecting device 1 and the vibration information and optionally a time history of vibration information/data obtained by the signal processing unit 5 to a vibration information processing serverin the network described later.
• the processing unit transmits at least one or all of the identification code, the installation position and the vibration information using the communication unit via the network to a vibration information processing serverwhen the processing unit receives via the communication unit a command from the central control server or when a value of the vibration information, such as a peak ground acceleration or peak ground velocity, exceeds a threshold, or when the processing unit has determined based on the shift of the natural frequency of the facility that the facility is in a critical state.
• a vibration information processing server when the processing unit receives via the communication unit a command from the central control server or when a value of the vibration information, such as a peak ground acceleration or peak ground velocity, exceeds a threshold, or when the processing unit has determined based on the shift of the natural frequency of the facility that the facility is in a critical state.
• FIG. 4 shows the vibration information collecting system 10 of the present embodiment.
• the vibration information collecting device 1 of the present embodiment is installed in a facility such as a house 21, a high-rise facility 22 such as a high-rise apartment, and a large facility 23 such as an airport.
• a part of the vibration information collecting device 1 is denoted by a reference numeral.
• the vibration information collecting device 1 is connected to the vibration information processing serverll via the network 20.
• the vibration information collecting device 1 and the vibration information processing serverll are connected through lot(internet of Things) or the like.
• the vibration information collecting device 1 transmits data such as each identification code, installation location, vibration information and the like to the vibration information processing serverll .
• the vibration information processing serverll analyzes vibration from the data transmitted from each vibration information collecting device 1. By analyzing each vibration, e g. the natural frequency with which the facility vibrates, it is possible to grasp the state of the house 21 , the high-rise facility 22, the large facility 23, and the like where the related vibration information collecting device 1 is installed.
• the vibration information collecting system may comprise a central control server connected to each of the plurality of vibration information collecting devices, wherein the central control server may transmit a command including instructions to control the vibration information collecting device or a group of vibration information collecting devices to at least one of the plurality of vibration information collecting device or to a subgroup of the plurality of vibration information collecting devices.
• the signal processing unit of at least one vibration information collecting device or a subgroup of vibration information collecting devices may set a sampling rate of the sensor, may set a threshold for the value of the vibration information, may set a predetermined amount of the natural frequency to determine that the facility is in a critical state, may adjust the sensitivity of the sensor or the range in which the velocity/acceleration or velocity sensor measures, or performs transmission of at least one or all of the identification code, the installation position and the vibration information to the vibration data processing server.
• the vibration information collecting system may further comprise an update server connected to each of the plurality of vibration information collecting devices.
• the central control server may transmit update data to at least one of the plurality of vibration information collecting device or may transmit the update data to a subgroup of the plurality of vibration information collecting devices.
• vibration data processing server central control server and the update server may be combined in a single server or may be separate servers.
• Fig. 5 shows the natural frequency of a building vibrated with a shaking table.
• Fig.5 (a) shows the natural frequency of the building before destruction.
• FIG.5 (b) shows the natural frequency of the building after destruction or damage.
• the natural frequency of a building changes when there is a damaged part.
• the natural frequency of the building before destruction is around 2 to 3Hz.
• the natural frequency of the building after the damage becomes around 0.9 to 1 Flz as shown in FIG.5(b).
• the determination and analyzation of the natural frequency of the vibration of the facility can be made by the vibration information collecting device attached to the facility. In this way the processing of the natural frequency is decentralized. In this way the reaction time is reduced, data traffic is reduced and the processing burden is split.
• the determination and analyzation of the natural frequency of the vibration of the facility can be made by the vibration information processing serverll such that the determination of the natural frequency is performed at a central processing server.
• the server may have stronger processing power as compared to a vibration information collecting device and thus results may be more accurate or the dissemination of warning may be coordinated.
• the vibration information collecting device 1 of the present embodiment can be installed in the house 21.
• the example shown in FIG 4 includes a vibration information collecting device 21 a01 installed at an outlet, e.g. power outlet, on the first floor and a vibration information collecting device 21a02 installed at an outlet, e.g. power outlet, on the second floor.
• the vibration information collecting device 21a01 and the vibration information collecting device 21a02 are connected to a connection device 211 such as a router or a gateway by wireless such as Wi-Fi or wired such as a LAN cable.
• the connection device 211 is connected to the network 20.
• the vibration information collecting device 1 of the present embodiment is preferably installed at least in the vertical direction of the house 21 or installed in the four corners.
• the vibration information processing server11 can specifically analyze the vibration of the house 21, and compare against an earthquake resistance index such as Iso (Seismic Demand Index) value or CT / SD value.
• the current state of the house 21 can be analyzed more accurately.
• the vibration information processing server! 1 can detect the damage or defect of the house 21 by comparing the result obtained from the vibration analysis with the earthquake resistance index, and can transmit an alarm or the like to the vibration information collecting device 1.
• the vibration information collecting device 1 may be installed in a high-rise facility 22 such as an apartment house, or a school or office building.
• vibration information collecting devices 22a01, 22a02, 22a28, etc. may be installed in outlets such as Room 101 , Room 201 and Room 2801, respectively.
• the vibration information collecting device 1 need not be installed in all rooms.
• a plurality of vibration information collecting devices 1 may be installed in each room.
• Each vibration information collecting device 1 is connected to a connection device (not shown) by wireless such as wi-fi or wired such as a LAN cable.
• the connected device is connected to the network 20.
• the connected devices may connect to the vibration information collecting devices 1 in each room one by one, or may connect to the vibration information collecting devices 1 such as one floor or one block one by one.
• Each of the plurality of vibration information collecting devices 1 stores the installation location, and the vibration information processing serverll connected via the network 20 corresponds to the vibration information collected by each vibration information collecting device 1 in accordance with the installation location.
• the vibration information collecting device 1 of the present embodiment is installed at least in the vertical direction of the high-rise facility 22 or installed at four comers.
• the vibration information processing server! 1 can specifically analyze the vibration of the high-rise facility 22, and compare against an earthquake resistance index such as Iso (Seismic Demand Index) value or CT / SD value.
• an earthquake resistance index such as Iso (Seismic Demand Index) value or CT / SD value.
• the vibration information processing serverU can detect the damage or defect of the high-rise facility 22 by comparing the result obtained from the vibration analysis with the earthquake resistance index, and can transmit an alarm or the like to the vibration information collecting device 1.
• the vibration information collecting device 1 of the present embodiment may be installed in a large facility 23 such as an airport, a highway or a power plant.
• vibration information collecting devices 23a01 , 23a02, 23b03, and the like may be installed on the power source of the runway guide light. Note that the vibration information collecting device 1 does not have to be installed in all guide lights. A plurality of vibration information collecting devices 1 may be installed in one guide light.
• Each vibration information collecting device 1 is connected to the connection device 231 by wireless such as wi-fi or wired such as a LAN cable.
• the connection device 231 is connected to the network 20.
• the connection apparatus 231 may correspond to the vibration information collecting device 1 of each taxiway, and may correspond to the vibration information collecting devices 1.
• Each of the plurality of vibration information collecting devices 1 stores the installation location, and the vibration information processing serverU connected via the network 20 analyzes the vibration information collected by each vibration information collecting device 1 in accordance with the installation location.
• the vibration information collecting device 1 of the present embodiment is preferably installed at least at the four comers of the guide light installed side by side on the runway.
• the vibration information processing server! 1 can specifically analyze the vibration of the large facility 23 and can analyze the current state of the large facility 23 more accurately.
• the vibration information processing serverll can detect damage or defect of the large facility 23 and transmit an alarm or the like to the vibration information collecting device 1.
• the vibration information collecting device 1 of the present embodiment includes at least the case 2, the processing unit 3 supported by the case 2, and the power supply unit 8 that supplies power to the processing unit 3, and the processing unit 3 includes: An acceleration or velocity sensor 4 that measures acceleration, a signal processing unit 5 that obtains vibration information from acceleration signals measured by the acceleration or velocity sensor 4, a communication unit 6 that connects the signal processing unit 5 to a network, an identification code, an installation position, and a time history of vibration information/data and at least a storage unit 7 for storing vibration information obtained by the signal processing unit 5, and the power supply unit 8 includes a plug 8 a that protrudes from the case 2 that can be plugged into an outlet. Therefore, the vibration information collecting device 1 of the present embodiment can be manufactured in a small size at low cost and can be easily installed.
• the vibration information includes vibration waveform, running spectrum, ratio of long term average (LTA) and short term average (STA) of amplitude, or , include at least one of the dominant frequencies of vibration. Therefore, the vibration information collecting device 1 of the present embodiment can obtain information on various vibrations.
• the signal processing unit 5 synchronizes time using at least one of NTP (Network Time Protocol) or GNSS (Global Navigation Satellite System). Therefore, the vibration information collecting device 1 of this embodiment can synchronize vibration information with other vibration information collecting devices 1.
• NTP Network Time Protocol
• GNSS Global Navigation Satellite System
• the power supply unit 8 has a backup power supply. Therefore, the vibration information collecting device 1 of the present embodiment can obtain vibration information even during a power failure.
• the vibration information collecting system 10 includes a plurality of vibration information collecting devices 1 and a vibration information processing serverll connected to the vibration information collecting device 1 via the network 20.
• the information collecting device 1 transmits at least each identification code, installation location, time history, and vibration information to the vibration information processing serverll, and the vibration information processing serverll transmits the identification codes transmitted from the plurality of vibration information collecting devices 1. Analyzing vibration from installation location, time history of vibration information/data and vibration information. Therefore, the vibration information collecting system 10 of this embodiment can analyze vibration information sent from a plurality of vibration information collecting devices.
• the vibration information collecting system 10 of the present embodiment the plurality of vibration information collecting devices 1 are installed in the facilities 21 , 22, and 23, and the vibration information processing serverll compares the result obtained from the vibration analysis with the earthquake resistance index.
• the states of the facilities 21 , 22, and 23 are estimated. Therefore, the vibration information collecting system 10 of this embodiment can know the states of the facilities 21 , 22, and 23.
• the vibration information processing serverll determines that the analyzed natural frequencies of the facilities 21 , 22, and 23 are the natural frequencies of the vibrations of the facilities 21 , 22, and 23 before the analysis. If it becomes lower than that, it is estimated that the facilities 21 , 22, and 23 have damaged parts. Therefore, the vibration information collecting system 10 according to the present embodiment can know that the facilities 21 , 22, and 23 are damaged, and can notify that the facilities 21 , 22, and 23 are in a dangerous state.
• a vibration information collecting device characterized in that it comprises at least: a processing unit; wherein the processing unit is having at least: an acceleration or velocity sensor that measures acceleration; a signal processing unit for obtaining vibration information from the acceleration signal measured by the acceleration sensor; a communication unit for connecting the signal processing unit to a network; and a storage unit for storing at least the identification code, the installation position, the time history, and the vibration information obtained by the signal processing unit; the power supply unit has a plug that protrudes from the case and can be plugged into an outlet.
• the vibration information may include at least one of a vibration waveform, a running spectrum, a ratio of long term average (LTA) to short term average (STA), or a dominant frequency of vibration,
• the signal processing unit may synchronize time using at least one of NTP (Network Time Protocol) or GPS (Global Positioning System).
• NTP Network Time Protocol
• GPS Global Positioning System
• the power supply unit can have a backup power supply.
• a vibration information collecting system may comprise: a plurality of vibration information collecting devices; a vibration information processing server connected to the vibration information collecting device via the network; wherein the plurality of vibration information collecting devices transmits at least each of the identification code, the installation location, the time history and the vibration information to the vibration data processing server, the vibration information processing server analyzes vibration from the identification code, the installation location, the time history, and the vibration information transmitted from a plurality of vibration information collecting devices.
• the plurality of vibration information collecting devices may be installed in a facility, the vibration information processing server estimates the state of the facility by comparing the result obtained from the vibration analysis with a seismic index.
• the vibration information processing server or the processing unit may estimate that the facility has a damaged portion when the analyzed natural frequency of the vibration of the facility becomes lower than the natural frequency of the vibration of the facility before the analysis.

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• 2020
  • 2020-04-16 JP JP2020073230A patent/JP2021169965A/ja active Pending
• 2021
  • 2021-04-15 WO PCT/IB2021/000281 patent/WO2021209821A1/en not_active Ceased
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