KR102475829B1 - Seismic switchboard with earthquake monitoring and diagnosis device using acceleration and displacement signals - Google Patents

Abstract

The present invention relates to a seismic switchboard (high-voltage switchboard, low-voltage switchboard, motor control panel, and distribution board) to which an earthquake monitoring and diagnosis device using acceleration and displacement signals is applied. The seismic switchboard, according to the present invention, comprises: a sensor unit (100); a determination unit (200): an alarm generation and power cut-off unit (300); and a seismic damper. Therefore, the present invention has the effect of preventing safety accidents through a step-by-step alarm and power cutoff device.

Description

Seismic switchboard with earthquake monitoring and diagnosis device using acceleration and displacement signals}

The present invention relates to an earthquake-resistant switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals is applied, and more particularly, acceleration capable of detecting vibration energy caused by an earthquake in a high-voltage switchboard, a low-voltage switchboard, a motor control panel, and a switchboard (hereinafter, switchboard). By using a displacement sensor that can determine the tilt of the sensor and switchboard, it distinguishes between actual vibration and vibration caused by the surrounding environment to improve accuracy, detects and judges the situation that occurs in the early stage before an earthquake occurs, and monitors the situation of an earthquake in real time Acceleration and displacement signals that are monitored and diagnosed are used to prevent accidents, and earthquake-resistant switchboards (high voltage switchboard, low voltage switchboard, motor control panel, distribution panel).

In general, a switchboard is fixedly installed on the floor of a switchboard accommodating part inside a building or on the floor outside a building according to an earthquake-resistant design.

In general, the seismic design of the switchboard is made according to the vibration of the upper, lower, left, and right axes according to the vibration caused by the earthquake. In such an earthquake-resistant design, the switchboard is installed by applying the earthquake-resistant design to a fixture used when fixing the switchboard to the floor, and the fixture to which the earthquake-resistant design is applied.

However, even if the fixing device for fixing the switchboard has an earthquake-resistant design as described above, its function is lost when the building is shaken or collapsed depending on the intensity of the earthquake. If the power cut-off device is not artificially supplied, power is continuously supplied to maintain a state in which power is supplied to the inside of the building.

There is always a risk of fire due to the destruction of power lines inside the building due to severe shaking or collapse of the building, and there is a problem that can cause large-scale human casualties. There is a risk.

In order to solve this problem, recently, a vibration sensor for detecting the intensity of an earthquake is installed on the floor inside the switchboard to send a signal to the controller that controls the power supply of the switchboard according to the intensity of the earthquake, and send a signal to the inside of the building. A technology for cutting off supplied power is being developed.

However, the power supply cut-off of the switchboard using the above-mentioned vibration sensor cuts off the power supplied to the inside of the building, so the primary disaster can be prevented, but due to the problem that the power supplied to the switchboard from the outside cannot be cut off, There is a disadvantage in that secondary disaster prevention by supply power is not performed.

In addition, since the vibration sensor measures only the intensity of vertical vibration, there is a problem in that an error of not detecting an earthquake may occur when the switchboard changes in the front, rear, left, and right lateral directions.

In addition, the internal devices of the switchboard may be damaged due to an earthquake, or the switchboard may be overturned.

There is also an additional risk of accidents, such as the occurrence of accidents.

If such vibrations or shocks continuously occur, even if there is no problem externally, in reality, problems may occur at internal contacts or other connection points due to long-term vibration while the vibration continues, making it impossible to operate properly. It can lead to a fire accident and cause secondary damage.

In addition, in the case of earthquake-resistant devices that have been developed to protect switchboards from vibration, earthquake-resistance by vertical vibration can efficiently withstand earthquakes and base isolation, but due to horizontal vibrations in the front, rear, left and right directions, or combined horizontal and vertical vibrations, the switchboard is In a situation where omnidirectional vibration occurs in a direction that can be tilted three-dimensionally, there is a problem in that it is difficult to obtain an earthquake-resistant or seismic isolation action as effective as the vertical direction.

Republic of Korea Patent Publication No. 10-2010-0025937 (published on March 10, 2010) Republic of Korea Patent Registration No. 10-1520758 (2015.05.18 announcement) Republic of Korea Patent Registration No. 10-1418247 (Announced on July 10, 2014)

Therefore, the present invention is to solve various disadvantages and problems of the prior art as described above, by using an acceleration sensor capable of detecting vibration energy due to an earthquake in a switchboard and a displacement sensor capable of determining the inclination of the switchboard, real vibration and surroundings Accuracy is improved by classifying vibrations caused by the environment, accidents are prevented by detecting and judging the situation that occurs in the early stages before an earthquake occurs, monitoring and diagnosing the situation of an earthquake in real time to judge the situation based on this, and determining the situation based on this in real time. An object of the present invention is to provide a seismic switchboard equipped with an earthquake monitoring and diagnosis device using acceleration and displacement signals to prevent a fall accident by applying the device.

In order to achieve the above object, the present invention judges the vibration energy caused by the earthquake in the switchboard and the tilt of the switchboard, but separates the actual vibration from the vibration caused by the surrounding environment and uses the sensing signal to improve accuracy with an acceleration sensor and a displacement sensor. Sensor unit 100 for sensing using; After receiving various sensed values of the sensor unit 100, first analysis detects magnitude data of the vibration acceleration of the switchboard, and second analysis detects displacement amount, which is magnitude data of the detected displacement by measuring the tilt of the switchboard. and a determination unit (200 ); and an alarm generating and power blocking unit 300 generating an earthquake-related alarm of the switchboard according to the alarm generating and switchboard power cut-off signal from the determination unit 200 and cutting off power of the switchboard; and a seismic damper coupled with the switchboard and installed on the base surface of the ground on the bottom of the switchboard to return to its original position when the vibration stops even if the switchboard is displaced with respect to the ground. An earthquake-resistant switchboard with an earthquake monitoring diagnosis device is provided.

Here, the sensor unit 100 is characterized in that it consists of an upper displacement sensor, a lower displacement sensor, and an acceleration sensor.

In addition, the upper displacement sensor, the lower displacement sensor, and the acceleration sensor include an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, a lower right displacement sensor 140, and an upper acceleration sensor 150. ) and a lower acceleration sensor 160.

In addition, the determination unit 200 detects the inclination state of the switchboard in real time by utilizing a displacement sensor among various sensors of the sensor unit 100, and compares it with the inclination value at the time of initial installation of the switchboard to determine the degree of risk and determines the current state of the switchboard. It is characterized in that it is configured to minimize damage due to disasters and disasters by checking the safety level and notifying the manager's smartphone 500 of the abnormality of the switchboard through the management server 400 when a slope of more than the standard separation distance of the switchboard occurs.

Here, the acceleration sensor detects the magnitude of the detected vibration as an acceleration G value and X-axis, Y-axis, and Z-axis data, and the displacement sensor detects the magnitude of the detected displacement as data in units of mm.

In addition, the determination unit 200 calculates the amount of change in the time domain with respect to the data detected by the acceleration sensor, performs a first analysis by comparing and analyzing the case of a preset safe state and the case of needing to proceed with the analysis after the calculation, After calculating the amount of change in the time domain for the data detected by the displacement sensor, the second analysis is performed by comparing and analyzing the case of a preset safe state and the case of needing to proceed with the analysis. When the result of the second detection of the generated displacement of the switchboard is judged to be in progress, a third analysis of the acceleration and displacement is performed.

And the seismic damper is a variable case composed of a lower frame installed on the foundation surface and an upper frame installed separately from the lower frame, a main buffer spring installed between the upper frame and the lower frame, and a vertical to the main buffer spring It is inserted in the direction and is installed to protrude higher than the upper surface of the upper frame through the upper frame, and includes a guide shaft guiding the upper frame to be lifted together according to the expansion and contraction of the main buffer spring.

In addition, a spherical ball formed in a spherical shape by expanding the horizontal cross-sectional area of the guide shaft is provided at the lower end of the guide shaft, and a spherical pocket in which the spherical ball is rotatably contained in place is formed at the upper part of the lower frame, When the main buffer spring damps vertical or horizontal vibration, the spherical ball allows the guide shaft to guide both lifting and shearing of the upper frame, and the inner upper frame provided on the lower surface of the upper frame in the variable case. And an inner lower frame provided on the upper surface of the lower frame is further installed, and the spherical pocket is formed on the upper surface of the inner lower frame.

According to an embodiment of the present invention, there are the following effects.

First, since the state of the switchboard is compared by the upper left and right displacement sensors, the lower left and right displacement sensors, and the upper and lower acceleration sensors installed in the switchboard, accurate earthquake detection is possible. It monitors and diagnoses the earthquake occurrence situation in real time, judges the situation based on this, and has the effect of preventing safety accidents through step-by-step alarms and power cutoff devices.

Second, errors that may occur can be prevented in advance by transmitting the status of the switchboard step by step to a manager or a person concerned so that they can check it in advance.

Third, it is possible to buffer not only vertical vibrations at the bottom of the switchboard, but also three-dimensional three-dimensional vibrations such as horizontal and inclined directions, and it is easy to restore to the original state. Also, even if the switchboard is displaced to the ground, it is immediately returned to its original position when the vibration stops Falling accidents can be prevented by installing an earthquake-resistant device that can be returned to.

1 is a block configuration diagram for explaining an embodiment of an earthquake-resistant switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals according to the present invention is applied;
2 is a detailed block configuration diagram of an earthquake-resistant switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals shown in FIG. 1 is applied;
3 is a view showing an embodiment of installation positions of sensors and earthquake-resistant dampers of an earthquake-resistant switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals according to the present invention is applied;
4 is a flowchart for explaining an embodiment of an earthquake monitoring diagnosis method using acceleration and displacement signals according to the present invention;
5 is a view for explaining an earthquake detection analysis result in a seismic switchboard to which an earthquake monitoring and diagnosis device using an acceleration and displacement signal according to the present invention is applied;
6 is a view showing an embodiment of the control server shown in FIG. 1;
7 is a diagram showing the step-by-step alarm generation of the determination unit according to an embodiment of the present invention;
8 is a diagram showing a terminal configuration of a determination unit according to an embodiment of the present invention;
9 is a view showing a parallel plate electrostatic driving principle;
10 is a view showing a comb drive actuator applied to a sensor unit according to an embodiment of the present invention;
11 is a diagram showing a differential capacitive accelerometer of a MEMS accelerometer.
12a is a perspective view for explaining an embodiment of an earthquake-resistant damper capable of three-dimensional earthquake resistance for preventing a fall accident of a seismic switchboard to which an earthquake monitoring diagnosis device using an acceleration and displacement signal according to the present invention is applied;
Figure 12b is a side view in the direction A in Figure 12a;
Figure 12c is a cross-sectional view of Figure 12b;
Figure 12d is a cross-sectional view in the direction B in Figure 12a;
Figure 13 is an exploded perspective view of Figure 12a;
14a to 14c are enlarged views of each part in FIG. 13;
15a is a working state diagram of FIG. 12c;
Figure 15b is a conceptual diagram of the action of the flow washer in Figure 15a;
Fig. 16a is a side view showing a further embodiment of Fig. 12b;
FIG. 16B is a conceptual diagram illustrating the operation of the displacement control buffer in FIG. 16A.

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, the terms used in the present invention have been selected from general terms that are currently widely used as much as possible, but in certain cases, there are terms arbitrarily selected by the applicant. It is intended to clarify that the present invention should be understood as the meaning of the term, not the name of. In addition, in describing the embodiments, descriptions of technical details that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention without obscuring it by omitting unnecessary description.

1 is a block configuration diagram for explaining an embodiment of a seismic switchboard to which an earthquake monitoring and diagnosis apparatus using acceleration and displacement signals according to the present invention is applied.

As shown in FIG. 1, an embodiment of a seismic switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals according to the present invention is applied includes a sensor unit 100, a determination unit 200, and an alarm generating and power cutoff unit 300. consists of including

The sensor unit 100 determines the vibration energy caused by the earthquake in the switchboard and the tilt of the switchboard, and collects sensing signals for improving accuracy by distinguishing between actual vibration and vibration caused by the surrounding environment. To this end, the sensor unit 100 is configured by using an acceleration sensor capable of detecting vibration energy caused by an earthquake and a displacement sensor capable of determining the inclination of the switchboard.

In addition, the acceleration sensor that detects the vibration energy applied to the switchboard due to the occurrence of an earthquake consists of a pair of fixed and movable plates installed at regular intervals. When external vibration is applied, an acceleration sensor module is configured to measure the acceleration value by outputting a capacitance value corresponding to the magnitude and direction of the acceleration according to the movement of the fluid plate, and the tilt state and current state of the switchboard installed initially In order to compare and analyze in real time, configure the gyro displacement sensor module. Various types of information detected by the sensor unit are collected and transmitted to the determination unit for analysis.

In the switchboard to which the earthquake monitoring and diagnosis device using acceleration and displacement signals according to an embodiment of the present invention is applied, the reliability of vibration detection is improved through linkage between the displacement sensor and the acceleration sensor, and notification is provided through flexible analysis and judgment according to the site situation. and give an alert.

Displacement sensors and acceleration sensors detect the magnitude and direction of vibration energy that occurs normally in real time, collect micro-vibration data, and improve the reliability of vibration detection through repeated learning (deep learning) of the normal state.

Displacement sensors and acceleration sensors upgrade their own safety state when vibration occurs where the magnitude of detected vibration energy is out of the normal vibration state, and analyzes and determines the stability standard % of the existing warning and risk level flexibly by using MEMS to suit the site situation. change it by

A brief amplification of these MEMS is as follows. MEMS (microelectronic control technology) are specialized silicon chips that are integrated into miniaturized electronic circuits, as well as mechanical parts such as small arms, gears and springs, that have the ability to process data and store data in the form of certain types of sensors. have the ability The size of the sensors is on the order of a millionth of a meter or a few micrometers.

The determination unit 200 determines an initial stage before an earthquake occurs as a result of detection through the sensor unit 100 . The determination unit 200 transmits detected data using the sensor unit 100 and a communication shield cable or receives sensing results of various sensors of the sensor unit 100 through wireless communication.

The determination unit 200 according to the present embodiment receives various sensing values of the sensor unit 100 and measures the vibration acceleration and displacement to detect whether the vibration is caused by an actual earthquake or a temporary external environment, thereby generating It is designed to minimize damage.

On the other hand, the determination unit 200 detects the magnitude and direction of the acceleration of the vibration energy generated by the earthquake through the sensor unit 100 and detects the magnitude of the generated vibration energy as an acceleration value to detect vibration energy greater than the set value. If necessary, an alarm and a power cutoff signal are generated through the alarm and power cutoff unit 300 to prevent additional accidents that may occur secondarily.

In addition, the determination unit 200 uses a displacement sensor among various sensors of the sensor unit 100 to detect the inclination state of the switchboard in real time, compares it with the inclination value at the time of initial installation of the switchboard, determines the degree of risk, and determines the safety level of the current switchboard state. Check the At this time, the determination unit 200 notifies the manager's smart phone 500 of an abnormality of the switchboard through the management server 400 when a slope greater than the standard separation distance of the switchboard is generated so as to minimize damage due to disasters and disasters.

The detailed configuration of the earthquake-resistant switchboard to which the earthquake monitoring and diagnosis device using the acceleration and displacement signals of the present invention is applied will be described in more detail with reference to FIGS. 2 and 3, the sensor unit 100, as shown in FIG. It may be composed of a displacement sensor, a lower displacement sensor, and an acceleration sensor, and more specifically, an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, and a lower right displacement sensor 140 , It is configured to include an upper acceleration sensor 150 and a lower acceleration sensor 160.

Here, the upper left displacement sensor 110, the upper right displacement sensor 120, the lower left displacement sensor 130, and the lower right displacement sensor 140 are respectively installed on the upper left and right sides of the switchboard as in the embodiment of FIG. Sensing (detecting) the upper left slope, upper right slope, lower left slope, and lower right slope of In the case of detecting in this way, there is an advantage in that the sensing of the inclination can be more accurately compared to the case of installing only one at the lower part or installing one at the upper and lower parts. That is, for example, if the switchboard leans to the left, taking the upper left and upper right sides as an example, the displacement of the right displacement sensor will be greater than the actual displacement (displacement value) of the left displacement sensor. More precise detection will be possible compared to the configured case. At this time, a camera that is spaced apart from the switchboard and photographs the switchboard is installed on one side of the switchboard, so that the switchboard can be remotely monitored. This monitoring information is also transmitted to the control server 400 and the administrator's smartphone 500.

In addition, in the present invention, the acceleration sensor also comprises an upper acceleration sensor 150 and a lower acceleration sensor 160, respectively, so that the magnitude of vibration acceleration is detected at the upper and lower parts of the switchboard, respectively, so that more precise detection is possible.

In addition, the determination unit 200 includes a sensing data receiving unit 210, a main processor 220, a display unit 230, an output unit 240, and a power supply unit 250.

Here, the sensing data receiver 210 includes an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, a lower right displacement sensor 140, an upper acceleration sensor 150, and a lower acceleration sensor. The data sensed in 160 is received and transmitted to the main processor 220 .

The main processor 220 includes an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, a lower right displacement sensor 140, and an upper acceleration sensor transmitted from the sensing data receiver 210. 150 and the displacement data and acceleration data sensed by the lower acceleration sensor 160 are analyzed.

At this time, the analysis in the main processor 220 is performed from the first to the third, and the analysis values are shown in FIG. 5 .

In addition, FIG. 3 shows an embodiment of the installation position of the earthquake-resistant damper of the earthquake-resistant switchboard to which the earthquake monitoring and diagnosis device using acceleration and displacement signals according to the present invention is applied. An embodiment thereof will be described.

4 is a flowchart illustrating an embodiment of an earthquake monitoring and diagnosis method using acceleration and displacement signals according to the present invention, and FIG. 5 is an earthquake in a switchboard to which an earthquake monitoring and diagnosis device using acceleration and displacement signals according to the present invention is applied. It is a drawing for explaining the detection analysis result.

As shown in FIG. 4, in an embodiment of the earthquake monitoring and diagnosis method using acceleration and displacement signals according to the present invention, vibration is monitored (sensed) through an acceleration sensor installed in a switchboard (S100). In addition, the tilt is monitored (sensed) through the displacement sensor (S150).

The monitored vibration and tilt are analyzed by the main processor 220, which analyzes the vibration, tilt, and vibration/tilt as shown in Tables 1 to 3.

An analysis result of the main processor 220 is shown in FIG. 5 .

In the present invention, an acceleration sensor capable of detecting vibration energy due to an earthquake in a switchboard and a displacement sensor capable of determining an inclination of the switchboard are used to distinguish between actual vibration and vibration caused by the surrounding environment,

Vibration acceleration is measured by detecting the data of the magnitude (acceleration G value) and direction (X axis, Y axis, Z axis) of the detected vibration (S110), calculating the amount of change in the time domain, and calculating the change in the time domain. In comparison (S120), the main processor 220 of the determination unit 200 first analyzes (determines) the case of a safe state (S140) and the case of analysis to be performed (S130). At this time, the main processor 220 of the determination unit 200 compares with a preset table as shown in Table 1.

In addition, the amount of displacement of the switchboard is measured. The data of the size of the detected displacement (displacement value mm) is detected (S160), the amount of change in the time domain is calculated, calculated, and compared with a preset value (S170). ) and the main processor 220 of the determination unit 200 secondarily analyzes (determines) the case in which analysis is to be performed (S180). At this time, the main processor 220 of the determination unit 200 compares with a preset table as shown in Table 2.

If it is determined to be safe (S140) (S190), the vibration and tilt are continuously monitored (S100) (S150).

However, if both the first analysis (S130) and the second analysis (S180) are not in a safe state, the third analysis is performed (S200).

The third analysis is the main processor of the determination unit 200 for the acceleration and displacement when the first detection result of the generated vibration energy acceleration value is judged to be analyzed and the second detection result of the generated switchboard displacement is judged to be analysis progress ( 220) is compared with a preset table as shown in Table 3.

Through this third analysis, the main processor 220 of the determination unit 200 thirdly analyzes (determines) whether the vibration is caused by an actual earthquake or the vibration caused by a temporary external environment by comparing with a preset value (S200), According to the acceleration/displacement analysis result (S210), safety (S220), caution (S230), warning (S240), and danger (S250) are displayed on the display unit 230 for each risk stage, and an alarm is displayed through the output unit 240. The generating unit 310 generates an alarm for safety, caution, warning, and danger (S270), and when blocking (S260) is required, the main processor 220 blocks the power output of the switchboard through the power cutoff unit 320. And, an alarm for power cut-off is generated (S280) to prevent an accident.

A main processor 220 that receives all the data detected by the sensor unit 100, amplifies it, and recognizes the data applied to the switchboard through the sensing data receiving unit 210, which converts it into a signal suitable for the frequency band, and analyzes operation based on this. ) to determine the state of each stage.

The judgment unit 200 compares and analyzes the real-time current state of the switchboard analyzed in real time based on the initially set set value, displays it as a safety/caution/warning/danger stage, and determines that it is an accident at a stage higher than the set value. In this case, a power cutoff signal is sent through the output unit 240 to cut off the power of the switchboard.

The determination unit 200 determines that it is a single accident when data of 100% or more is detected compared to the reference value for each sensor or when an index of 100% or more occurs by analyzing the comprehensive safety index, and sends a signal for the power cutoff device.

In addition, the acceleration sensor for analyzing the vibration energy applied to the switchboard through the detection of the acceleration sensor and displacement sensor due to the occurrence of an earthquake and the slope analysis for the safety of the structure detects the magnitude and direction of the acceleration in the 3-axis direction caused by external vibration, It detects from 0G to 2G and analyzes the ratio of the current value to the reference value to determine the normal range to the dangerous range. It judges the normal range to the dangerous range, and if a displacement of 75mm or more and an acceleration of 0.7G or more occur, it is judged to be a dangerous state.

6 is a view showing an embodiment of the control server shown in FIG.

The control server 400 performs central monitoring and monitoring using communication with the determination unit 200, and enables disaster safety management using the manager's smartphone 500 APP (application).

As shown in FIG. 6, the control server 400 includes a communication unit 410, a switchboard monitoring unit 420, a switchboard motion detection unit 430, a sensor data collection unit 440, a sensor abnormality detection unit 450, and manager maintenance. It is composed of a request unit 460, a manager/person in charge information storage unit 470, a sensor equipment information unit 480, an alarm generation and power cutoff request unit 490, and a control unit 495.

Here, the communication unit 410 communicates with the determination unit 200 to receive the sensing data of the sensor unit 100 collected by the determination unit 200, and to the manager's smartphone 500 for various maintenance, inspection, repair, and hazards. transmit information, etc.

The switchboard monitoring unit 420 monitors the switchboard through a camera as shown in FIG. 3 .

The switchboard motion detection unit 430 detects a movement of the switchboard due to an earthquake according to a result of monitoring by the switchboard monitoring unit 420 . In addition, when motion is detected, an alarm for switchboard monitoring information (photographing information) is set to be automatically transmitted to the manager's smartphone 500 through the communication unit 410 . Accordingly, the occurrence of an abnormality in the switchboard can be detected together with the sensor unit 100 .

The sensor data collection unit 440 includes an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, a lower right displacement sensor 140, and an upper acceleration sensor configured in the sensor unit 100. 150 and the sensing information from the lower acceleration sensor 160 are periodically transmitted from the output unit 240 of the determination unit 200 .

The sensor abnormality detector 450 includes the upper left displacement sensor 110, upper right displacement sensor 120, lower left displacement sensor 130, lower right displacement sensor 140, and upper Sensor abnormality is detected according to sensing information from the acceleration sensor 150 and the lower acceleration sensor 160 . Above these sensors, the preset displacement value (displacement data) fluctuates, acceleration data is generated, or the upper left displacement sensor 110, the upper right displacement sensor 120, the lower left displacement sensor 130, and the lower displacement sensor 110 at a set cycle. Whether sensing information from the right displacement sensor 140, the upper acceleration sensor 150, and the lower acceleration sensor 160 is transmitted or not is detected to detect an earthquake as well as an abnormality of the sensor itself. That is, it detects even an anomaly with respect to a sensor for which data is not transmitted at a preset period.

The manager maintenance request unit 460 performs maintenance on the switchboard abnormality or sensor abnormality through the manager's smartphone 500 when the switchboard motion detection unit 430 and the sensor abnormality are detected from the sensor abnormality detection unit 450. automatically request.

The manager/person in charge information storage unit 470 stores information (smartphone number) of a switchboard manager, a sensor manager, and a camera manager.

The sensor equipment information unit 480 includes an upper left displacement sensor 110, an upper right displacement sensor 120, a lower left displacement sensor 130, a lower right displacement sensor 140, an upper acceleration sensor 150, and a lower acceleration sensor ( 160) information (manufacturer, installation date, failure occurrence cycle, etc.) is stored, and sensor information is stored so that the sensor can be easily replaced when a sensor failure occurs.

The alarm generation and power cut-off request unit 490 determines whether the switchboard movement exceeds a preset range (several mm or more) according to the switchboard motion detection unit 430 or the data collection value of the sensor data collection unit 440 exceeds the set range. If it is out of range, an alarm and power cutoff are requested to the alarm and power cutoff unit 300 separately from the determination unit 200 . That is, it is possible to prevent safety accidents by more safely taking measures in the early stages of dangerous situations in the switchboard through the double alarm and power cut-off request for the switchboard together with the determination unit 200 .

The control unit 495 includes the communication unit 410, the switchboard monitoring unit 420, the switchboard movement detection unit 430, the sensor data collection unit 440, the sensor abnormality detection unit 450, the manager maintenance request unit 460, the manager/person in charge It controls the information storage unit 470, the sensor equipment information unit 480, and the alarm generation and power cutoff request unit 490.

The switchboard to which the earthquake monitoring diagnosis device using acceleration and displacement signals according to this embodiment is applied is transmitted in real time through various sensors, and the determined information determines whether there is an accident through the determination unit, and all data information is transmitted in real time through wired communication (RS- 485, Ethernet, and all wired communication), the data is transmitted to the central monitoring team so that the manager can inspect it at any time. Minimize human life and property damage through stable power supply and accident prevention by determining whether or not there is a risk.

When the sensor unit 100 and the determination unit 200 are connected by using a communication shield cable to prevent noise mixing according to the surrounding environment, and the sensor unit 100 and the determination unit 200 are installed at a distance of 3M or more It is connected using wireless communication (ZigBee, Wi-Fi, Bluetooth, LoRa communication, etc.) to provide convenience to users and administrators.

7 is a diagram showing the step-by-step alarm generation of the determination unit according to an embodiment of the present invention.

The step-by-step alarm generation of the determination unit 200 according to an embodiment of the present invention is as shown in FIG. 7, and the determination unit 200 determines the normal range, the ambient range, the warning range, the danger range, and the blocking according to the set value criteria. By determining the range, among the detailed configurations of the determination unit 200 of FIG. 2 , the color of the lamp may be displayed as none, yellow, orange, red 1, and red 2 through the display unit 230 .

8 is a diagram showing a terminal configuration of a determination unit according to an embodiment of the present invention.

The wired terminal of FIG. 8 is a communication shield wired cable terminal for transmitting information between the sensor unit 100 and the determination unit 200 . The wireless terminal is a terminal for wireless communication for transmitting information between the sensor unit 100 and the determination unit 200 . ETH1 is a communication cable terminal for remote monitoring. The TRIP terminal is a trip contact output terminal according to the occurrence of a step-by-step alarm. The switchboard to which the earthquake monitoring and diagnosis device using the acceleration and displacement signals according to the present embodiment is applied utilizes the trip signal to control alarms, power cut-off, and fire extinguishing device operation signals. The power terminal is a control power terminal for supplying power to the judgment unit.

9 is a diagram showing the principle of parallel plate electrostatic driving of the vertical, horizontal, and horizontal displacement sensors.

Displacement sensors measure the distance or inclination of an object moving and are the basis for measuring various mechanical quantities. In many cases, capacitance change, inductance change, electrical resistance change, and generated electromotive force change are used to convert displacement into electric quantity. A number of displacement sensors are commercially available.

As shown in FIG. 9, in the parallel plate electrostatic driving principle, when different charges are charged on two plates, an electrostatic force exists between them. The capacitance of two parallel-plates is shown in Equation 1.

(A is the area of the electrode, d is the distance between electrodes, ε ₀ εr is the permittivity of the medium)

The energy stored in this system is given by Equation 2 below.

The electrostatic force is obtained as shown in Equation 3 by differentiating the above W with respect to the separation distance d.

The above equation shows that force (F) is a non-linear function of voltage and distance. At this time, it is possible to control the electrostatic force between the parallel plates by changing the distance.

An actuator design type used in a switchboard to which an earthquake monitoring and diagnosis device according to an embodiment of the present invention is applied is called a comb drive actuator, which is shown in FIG. 9 .

Geometrically, the thickness of a finger is small compared to its length and width. As can be seen in the simple comb structure shown in FIG. 10, the electrostatic attraction is mainly generated due to a fringing field rather than a parallel plate field. The motion of the comb caused by this is in the transverse direction, and since the capacitance changes due to the change of the overlapping area and the spacing is fixed, the displacement varies with the square of the voltage. The fixed electrode is firmly supported on the substrate, and the moving electrode is anchored and fixed at an appropriate point away from the active finger. The added parasitic capacitance between the finger and the substrate and the asymmetry of the fringing field can cause out-of-plane forces, which can be minimized with a more sophisticated design.

11 is a diagram showing a differential capacitive accelerometer of a MEMS accelerometer. The MEMS accelerometer consists of a moving verification mass with plates, as shown in FIG. 11 . The MEMS accelerometer is attached to a reference frame through a mechanical suspension system. The moving plate and the fixed plate in the outer part represent capacitors. The deflection of the verification mass is measured using the capacitance difference.

The free space (air) capacitances C1 and C2 between the movable plates and the two fixed external plates are a function of the corresponding interelectrode distances X1 and X2. If the acceleration is zero, the capacitances C1 and C2 are equal because X1 = X2.

The displacement x of the verification mass is caused by acceleration. If x is not 0, the capacitance on both sides of the electrode is expressed as in Equation 4 below.

Therefore, the differential capacitance is equal to Equation 5 below.

가 되므로 차동 정전용량은 아래와 같이 된다.If the displacement x is very small compared to the distance d,

So, the differential capacitance becomes:

That is, it can be concluded that the displacement value due to the change in acceleration is proportional to the capacitance difference. If the voltage applied to the system is Vs, it is expressed in Equation 7 below.

Impedance Z is given by the equation

The voltage output to the verification mass is shown in Equation 9.

here,

Basically, the acceleration is calculated by the formula proportional to the output voltage as follows.

m: mass, k: spring constant

In a capacitive accelerometer, the displacement of the verification mass due to acceleration is converted into a proportional capacitance change, which is later converted to a voltage signal and amplified. There is a moving electrode plate attached to the verification mass and a fixed electrode plate attached to the substrate. In designing the capacitive accelerometer, in quantifying the acceleration, the differential sensing method is performed to have an acceleration value proportional to the increase and decrease values of the capacitance according to the movement of the moving electrode plate. This differential sensing scheme doubles the sensitivity.

There are two basic processes for fabricating capacitive accelerometers: surface and bulk micromachining.

Therefore, the main advantage of this method lies in its excellent CMOS compatibility. The first step in this process is to deposit and pattern a sacrificial layer on the substrate, then deposit and pattern a structural layer on top. The sacrificial layer is then etched to release suspended mechanical structures. Devices fabricated using surface micromachining generate high noise due to the thin structural layer thickness and high internal stress.

In contrast, bulk micromachining uses etching of the bulk silicon substrate to create suspended structures within the wafer. Etching can be performed using wet (isotropic/anisotropic) or dry etching techniques. In isotropic etching, the etching rate is the same in all directions, but in anisotropic etching, the rate is different depending on the crystal orientation. For high aspect ratio structures, reactive ion etching (RIE) or deep reactive ion etching (DRIE) techniques are used. The structure realized using the bulk micromachining process has the advantage of low noise due to the thick structure and excellent stability.

In addition to these two basic manufacturing processes, there are new features: Some utilize the advantages of both surface and bulk micromachining, while others use surface micromachining methods such as electroplating over resist molds. Electroplating increases the thickness of the structure, alleviating the disadvantages of surface micromachining. It also monolithically manufactures a 3-axis accelerometer, 3-axis gyroscope and 3-axis magnetometer on a single chip.

An embodiment of an earthquake-resistant damper as an earthquake-resistant device capable of 3-dimensional earthquake resistance for preventing a fall accident of an earthquake-resistant switchboard to which an earthquake monitoring diagnosis device using acceleration and displacement signals according to the present invention is applied is shown in FIGS. 12A to 12C. It consists of a variable case 10, a main buffer spring 21, and a guide shaft 40.

The variable case 10 includes a lower frame 12 installed on the foundation surface and an upper frame 11 installed on top of the lower frame 12 and separated from the lower frame 12 .

In FIGS. 12A to 12C , the upper frame 11 is shown in the form of enclosing the lower frame 12, but contrary to the drawings, even if the lower frame 12 has a structure inclusive of the upper frame 11, the upper frame 11 ) and the lower frame 12 are separated from each other to correspond to the variable case 10 in the earthquake-resistant damper capable of three-dimensional earthquake resistance according to the present invention.

The main buffer spring 21 is installed between the upper frame 11 and the lower frame 12, and acts to absorb vibration between the upper frame 11 and the lower frame 12. That is, the vibration caused by the earthquake When transmitted to the main damping spring 21 through the base surface and the lower frame 12 installed on the base surface, the main damping spring 21 absorbs vibration through a stretching action, so that the vibration is transmitted to the upper frame 11. It does a great job of removing it.

The guide shaft 40 is inserted into the main buffer spring 21 in a vertical direction and penetrates the upper frame 11 to protrude higher than the upper surface of the upper frame 11, thereby contributing to the expansion and contraction of the main buffer spring 21. It serves to guide the upper frame 11 to be lifted along with it.

At this time, a spherical ball 42 formed in a spherical shape by expanding the horizontal cross-sectional area of the guide shaft 40 is provided at the lower end of the guide shaft 40, as shown in FIG. 12c.

The spherical ball 42 is a member integrally formed with or firmly coupled to the guide shaft 40, and is a member formed in a spherical shape as a whole.

As shown in FIG. 12C to correspond to the spherical ball 42, a spherical pocket 141 in which the spherical ball 42 is rotatably nested in place is formed on the upper part of the lower frame 12.

As such, when the spherical ball 42 is seated inside the spherical pocket 141 so as to be rotatable in place, the guide shaft 40 not only vibrates vertically but also vibrates in the horizontal direction due to the spherical ball 42 as shown in FIG. 15A. Likewise, since the upper frame 11 can guide the change in the horizontal direction, it is possible to buffer the vibration in the horizontal direction.

And, as shown in FIG. 12B, a horizontal holding spring 31 is installed around the main buffer spring 21 at a radially symmetrical point in a horizontal direction with respect to the center of the main buffer spring 21.

The plurality of horizontal holding springs 31 assist the buffer action of the main buffer spring 21 and at the same time disturb the resonance period of the main buffer spring 21 to suppress the development of the vibration period of the main buffer spring 21 into resonance. do.

In addition, since the horizontal holding spring 31 is installed at a radially symmetrical position around the main buffer spring 21, excessive tilting of the upper frame 11 to one side when vibration occurs is prevented, and the upper frame 11 ) can be maintained horizontally.

In addition, all of the horizontal holding springs 31 have a different modulus of elasticity from the main shock absorber spring 21, so that the resonance period of the main shock absorber spring 21 is disturbed, so that explosive vibration and device damage due to resonance can be suppressed. .

12b to 12d, the variable case 10 includes an inner upper frame 13 provided on the lower surface of the upper frame 11 and an inner lower frame 14 provided on the upper surface of the lower frame 12. This is more installed. Accordingly, the spherical pocket 141 may be formed on the upper surface of the inner lower frame.

In particular, when the inner upper and inner lower frames 13 and 14 are installed between the upper frame 11 and the lower frame 12 in this way, the second inner upper surface between the upper surface of the inner upper frame 13 and the lower surface of the upper frame 11 An upper frame 15 may be further installed, and an auxiliary buffer 50 may be installed between the second inner upper frame 15 and the inner upper frame 13 to assist the buffer action of the main buffer spring 21. have.

At this time, as shown in FIGS. 13, 12d, and 14c, the inner lower frame 14 and the lower frame 12 may be coupled to each other by a connecting member 33.

Also, as shown in FIG. 14A, the auxiliary buffer unit 50 is coupled to a plurality of wire ropes 51 installed in a curved form and is coupled to both ends of the wire rope 51 to fix the wire rope 51. It may be made of a rope support block 52. Therefore, vertical and horizontal vibrations can be additionally absorbed by the wire rope 51 having elasticity.

In addition, a hole through which the guide shaft 40 can pass is formed in the upper frame 11, as shown in FIG. 14A, and the upper end of the guide shaft 40 protrudes above the upper frame 11. At this time, the outer circumferential surface near the top of the guide shaft 40 is provided with a screw sector 41 in which a screw thread is formed, and a stopper nut 61 having a larger diameter than the diameter of the hole is coupled to the screw sector 41.

In particular, between the stopper nut 61 and the upper frame 11, as shown in FIG. 14A, a hemispherical flow washer 60 convexly formed toward the hole may be installed.

Therefore, as shown in FIG. 15A, when the upper frame 11 is relatively variable with respect to the lower frame 12, mutual interference and damage between the hole, the guide shaft 40, and the stopper nut 61 can be prevented. .

That is, since the flow washer 60 is formed in a hemispherical shape, as shown in FIG. 15B, when the upper frame 11 changes in the horizontal direction with respect to the lower frame 12, the guide shaft 40 collides with the inner circumferential surface of the hole or It is damaged by friction or acts as a kind of bearing that prevents stiff movement between the guide shaft 40 and the inner circumferential surface of the hole.

On the other hand, the horizontal holding spring 31 described above has a different elastic modulus from the main buffer spring 21, so although it acts to suppress the resonance formation of the main buffer spring 21, the horizontal holding spring 31 and the main When the moment when the resonance periods of the buffer spring 21 coincide with each other occurs, the resonance effect can be rather amplified.

Therefore, in order to prevent this phenomenon, an elastic rope 32 connecting the inner upper frame 13 and the inner lower frame 14 may be installed at the center of the leveling spring 31 .

The elastic rope 32 has its own elastic force, but since the range in which the length is stretched is limited, it acts similar to a kind of stopper that limits the distance between the upper frame 11 and the lower frame 12, thereby reducing resonance. occurrence can be effectively suppressed.

In addition, although not shown in detail, the elastic rope 32 consists of a wire rope and an elastic tube (not shown) coupled to the wire rope in a form surrounding the surface of the wire rope, so that it can be manufactured to prevent its own resonance formation. can

On the other hand, between the lower frame 12 and the base surface, as shown in FIG. 16A, a slide member 75 attached to the bottom surface of the lower frame 12 and formed convexly toward the base surface, and attached to the upper surface of the base surface and A displacement control buffer 70 made of a curved plate 71 formed as a concave surface having a larger radius of curvature than the sliding member 75 may be further provided.

When vibration caused by an earthquake occurs, the sliding member 75 slides along the upper surface of the curved plate 71, so that the switchboard, which is a facility installed on top of the earthquake-resistant damper capable of 3-dimensional earthquake resistance according to the present invention, is free with respect to the foundation surface. can be variable However, when the vibration of the earthquake weakens or disappears, the slide member 75 slides down from the upper surface of the curved plate 71 to the center of the lowest height and returns, so that the return of the switchboard to its original state can be ensured.

In addition, as shown in FIG. 16A, the stop jaw 72 is formed on the periphery of the upper surface of the curved plate 71, so that the slide member 75 moves the stop jaw 72 even when the vibration wave in the shear direction is large. Therefore, the sliding member 75 can be prevented from coming out of the curved plate 71 in the end.

In particular, as shown in FIGS. 16A and 16B, a positioning hole 73 having a constant diameter is formed in the center of the upper surface of the curved plate 71, so that the sliding member 75 and the curved plate 71 are relative to each other. The process of returning the slide member 75 to the center of the curved plate 71 after being varied can be facilitated.

In addition, since the sliding member 75 can accurately return to the center of the curved plate 71 due to the positioning hole 73, contact destruction or contact points that may occur due to displacement due to distortion of the switchboard expected after an earthquake occurs Problems such as defects can be prevented.

However, the sliding member 75 can be accurately guided to the center of the curved plate 71 due to the positioning hole 73, but the sliding member 75 is constrained to the positioning hole 73 when an earthquake occurs. There is a problem in that large vibration is required in order to get out of the locked state and slide freely.

However, in order for the sliding member 75 to land accurately at the center of the curved plate 71, a significant portion of the lower portion of the sliding member 75 must be inserted into the positioning hole 73.

Here, in order for the sliding member 75 to be accurately seated in the center of the curved plate 71, the positioning hole 73 must be of a certain size or larger so that the sliding member 75 can be inserted into the positioning hole 73 up to a certain portion. However, in this case, an earthquake may occur and the sliding member 75 may not move out of the fixed hole 73 even though the sliding member 75 should be freely changed on the curved plate 71.

In the seismic damper capable of three-dimensional earthquake resistance according to the present invention, as shown in FIG. 16B, a variable acceleration spring (742) composed of a leaf spring or a compression spring is installed in the position hole 75 so that all of these contradictory requests can be resolved. ) and a contact member 741 connected to an upper end of the variable promotion spring 742 and contacting the surface of the sliding member 75, the variable promotion module 74 may be installed.

In a situation where vibration in the shear direction is generated due to the installation of the variable acceleration module 74, collision between the sliding member 75 and the contact member 741 is repeated due to the vibration, so that the sliding member 75 moves through the positioning hole 73 The process of getting out of it can be accelerated.

That is, if the sliding member 75 and the contact member 741 collide repeatedly, the number of times the contact member 741 collides with the variable promotion spring 742 is repeated, and at this time, the variable promotion spring 742 acts as well as its own elastic force. Even the force according to the reaction is obtained, and as the self-resonance period gradually approaches, the elastic force toward the upper part increases.

As the elastic force of the variable acceleration spring 742 increases, the variable acceleration spring 742 bounces the slide member 75 higher than the top of the positioning hole 73 via the contact member 741 at a certain point in time. be able to pay Accordingly, a phenomenon in which the center of the bottom surface of the sliding member 75 is caught in the positioning hole 73 and the free change of the sliding member 75 is hindered can be prevented.

Although the present invention has been described with the above examples, the present invention is not necessarily limited to these examples, and may be variously modified and implemented without departing from the technical spirit of the present invention. Therefore, the examples disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these examples. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: variable case 11: upper frame
12: lower frame 13: inner upper frame
14: inner lower frame 13a, 14a: spherical pocket
15: second inner upper frame 21: main buffer spring
31: leveling spring 32: elastic rope
33: connecting member 34: horizontal spring connection kit
40: guide shaft 41: screw sector
42: spherical ball
50: auxiliary buffer 51: wire rope
52: rope support block 60: floating washer
61: stopper nut 70: displacement control buffer
71: curved plate 72: stop jaw
73: fixed position hall 74: variable acceleration module
75: slide member
741: contact member 742: variable acceleration spring
100: sensor unit 110: upper left displacement sensor
120: upper right displacement sensor 130: lower left displacement sensor
140: lower right displacement sensor 150: upper acceleration sensor
160: lower acceleration sensor
200: determination unit 210: sensing data receiving unit
220: main processor 230: display unit
240: output unit 250: power unit
300: alarm generation and power cutoff unit 310: alarm generation unit
320: power cut-off unit
400: control server 410: communication department
421: switchboard monitoring unit 430: switchboard movement detection unit
440: sensor data collection unit 450: sensor abnormality detection unit
460: manager maintenance request unit 470: manager/person in charge information storage unit
480: sensor equipment information unit 490: alarm generation and power cutoff request unit
495: control unit 500: smartphone

Claims (8)

A sensor unit 100 that senses a sensing signal to improve accuracy by distinguishing between actual vibration and vibration caused by the surrounding environment while determining the vibration energy caused by an earthquake in the switchboard and the tilt of the switchboard using an acceleration sensor and a displacement sensor. ;
After receiving various sensed values of the sensor unit 100, first analysis detects magnitude data of the vibration acceleration of the switchboard, and second analysis detects displacement amount, which is magnitude data of the detected displacement by measuring the tilt of the switchboard. and a determination unit (200 );
an alarm generating and power blocking unit 300 generating an earthquake-related alarm of the switchboard and cutting off power of the switchboard according to an alarm generating and switchboard power cutoff signal from the determination unit 200; and
an alarm generating and power blocking unit 300 generating an earthquake-related alarm of the switchboard and cutting off power of the switchboard according to an alarm generating and switchboard power cutoff signal from the determination unit 200; and
Even if the switchboard is displaced with respect to the ground, it is configured to include a seismic damper coupled to the switchboard and installed on the ground foundation surface of the bottom of the switchboard so that it returns to its original position when the vibration stops,
The earthquake-resistant damper includes a variable case 10 composed of a lower frame 12 installed on the foundation surface and an upper frame 11 installed separately from the lower frame 12, and the upper frame 11 and the lower frame (12) installed between the main buffer spring 21, inserted into the main buffer spring 21 in a vertical direction and penetrating the upper frame 11 to protrude higher than the upper surface of the upper frame 11 It is configured to include a guide shaft 40 that guides the upper frame 11 to be lifted together according to the expansion and contraction of the main buffer spring 21,
A spherical ball 42 formed in a spherical shape by extending the horizontal cross-sectional area of the guide shaft 40 is provided at the lower end of the guide shaft 40, and the spherical ball 42 is formed on the upper part of the lower frame 12. By forming a spherical pocket 141 rotatably nested in place,
When the main damping spring 21 damps vertical or horizontal vibration, the guide shaft 40 can guide both the lifting and shearing of the upper frame 11 due to the spherical ball 42, In the variable case 10, an inner upper frame 13 provided on the lower surface of the upper frame 11 and an inner lower frame 14 provided on the upper surface of the lower frame 12 are further installed, and the spherical pocket 141 ) Is formed on the upper surface of the inner lower frame 14,
A plurality of horizontal holding springs 31 are installed around the main buffer spring 21 at points radially symmetrical in the horizontal direction with respect to the center of the main buffer spring 21, so that the plurality of horizontal holding springs 31 assists the buffer action of the main buffer spring 21 and at the same time disturbs the resonance period of the main buffer spring 21 to suppress the resonance of the main buffer spring 21, and tilts to one side when vibration occurs is prevented to keep the upper frame 11 horizontal,
A second inner upper frame 15 is further installed between the upper surface of the inner upper frame 13 and the lower surface of the upper frame 11, and the second inner upper frame 15 and the inner upper frame 13 An auxiliary buffer 50 is installed between the main buffer spring 21 to assist in the buffer action,
The auxiliary shock absorber 50 is coupled to a plurality of wire ropes 51 installed in a curved form, and both ends of the wire rope 51 to fix the wire rope 51, a rope support block 52 ), and vibrations in the vertical and horizontal directions are additionally absorbed due to the wire rope 51 having elasticity,
A hole through which the guide shaft passes is formed in the upper frame, and a stopper nut having a larger diameter than the diameter of the hole is coupled to an upper end of the guide shaft protruding more upward than the upper frame,
A hemispherical flow washer convexly formed toward the hole is installed between the stopper nut and the upper frame, so that when the upper frame is relatively variable with respect to the lower frame, mutual interference between the hole, the guide shaft, and the stopper nut and Earthquake-resistant switchboard (high voltage switchboard, low voltage switchboard, motor control panel, distribution panel) applied with an earthquake monitoring diagnosis device using acceleration and displacement signals, characterized in that damage is prevented
According to claim 1,
The sensor unit 100 is composed of an upper displacement sensor located on the upper part of the switchboard, a displacement sensor and an acceleration sensor located on the lower part of the switchboard, and an earthquake monitoring and diagnosis device using acceleration and displacement signals. Seismic switchboard applied.
According to claim 2,
The upper displacement sensor, the lower displacement sensor, and the acceleration sensor,
The upper left displacement sensor 110, the upper right displacement sensor 120, the lower left displacement sensor 130, the lower right displacement sensor 140, the upper acceleration sensor 150, and the lower acceleration sensor 160. Seismic switchgear applied with an earthquake monitoring diagnosis device using characteristic acceleration and displacement signals.
According to claim 1,
The determination unit 200,
Among the various sensors of the sensor unit 100, the tilt sensor is used to detect the tilt state of the switchboard in real time, compare it with the tilt value at the time of initial installation of the switchboard to determine the degree of risk, and then check the safety level of the current switchboard state to separate the switchboard. Earthquake monitoring diagnosis using acceleration and displacement signals, characterized in that configured to minimize damage due to disasters and disasters by notifying the manager's smartphone (500) of an abnormality in the switchboard through the management server (400) when an inclination greater than the distance standard occurs Seismic switchboard with device applied.
According to claim 1,
The acceleration sensor detects the magnitude of the detected vibration as an acceleration G value and data of the X-axis, Y-axis, and Z-axis, and the displacement sensor detects the magnitude of the detected displacement as data in mm unit Acceleration, characterized in that Seismic switchgear applied with earthquake monitoring diagnosis device using displacement signal.
According to claim 5,
The determination unit 200,
For the data detected by the acceleration sensor, the amount of change in the time domain is calculated, and after the calculation, a first analysis is performed by comparing and analyzing the case in which the case is in a preset safe state and the case in which analysis is to be performed, and the time domain for the data detected by the displacement sensor After calculating the amount of change in the area, the second analysis is performed by comparing and analyzing the case of a preset safety state and the case of needing to proceed with the analysis, and the second detection of the case where the analysis is judged to be in progress and the displacement of the generated switchboard A seismic switchboard applied with an earthquake monitoring diagnosis device using an acceleration and displacement signal, characterized in that a third analysis is performed on the amount of acceleration and displacement when it is determined that the result analysis is in progress.
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