JP6078021B2 - Gas meter device and gas supply control method - Google Patents

Description

  The present invention relates to a gas meter device or the like that cuts off a gas supply in response to shaking of a building measured by a sensor.

  When a large earthquake motion that may cause a disaster occurs, the gas meter needs to shut off the gas supply. Therefore, in recent years, gas meter devices have been developed that detect the shaking of a building with a sensor and shut off the gas supply.

  For example, Patent Document 1 uses a gas meter equipped with a triaxial acceleration sensor to measure the seismic intensity obtained from the shaking generated by an earthquake and the inclination of the gas meter after the earthquake, and shut off the gas supply according to the measured value. Is described.

  As the shaking of the building, the speed and displacement of the building may be measured. For example, in Patent Document 2, the acceleration observed by the acceleration sensor and the index value of the speed calculated by the calculation process from the acceleration are used. It describes that earthquake motion evaluation is performed.

  Patent Document 3 describes that a displacement is calculated from acceleration measured by an acceleration sensor, and the seismic performance of the building is determined using this. Patent Document 4 describes that a building is forcibly vibrated and a dynamic characteristic of the building is estimated using a response value detected by a sensor provided on a specific floor.

JP 2013-164327 A JP 2007-3289 A JP 2003-344213 A JP 2002-228540 A

  In high-rise buildings, etc., the natural period for shaking is generally long, and it tends to resonate with long-period ground motion. Long-period vibration can cause large deformation in the building even when the acceleration does not show a very large value.

  Regarding the deformation of buildings during an earthquake, the Building Standards Act confirms that the interlaminar deformation angle is within the limit value in the structural calculation. For ultra-high-rise buildings, etc., the interlaminar deformation angle of each floor is acquired during an actual earthquake. If possible, the deformation state is directly measured, and the influence can be appropriately determined.

  However, the conventional sensor for detecting the shaking of the building does not directly detect the deformation of the building by the interlayer deformation angle.

  For example, in the method of Patent Document 1, the gas supply cutoff judgment is performed using the seismic intensity and the inclination of the gas meter after the earthquake. In Patent Document 2, the index value of acceleration or the speed calculated by the arithmetic processing from the acceleration is used. Therefore, the seismic motion of the building is evaluated. In Patent Document 3, the displacement is calculated from the acceleration measured by the acceleration sensor, and the seismic performance is evaluated by determining the remaining seismic performance of the building by obtaining a performance curve. In Patent Document 4, the building is compulsorily added. The dynamic characteristics of the building are estimated by the response value when shaken, but these do not directly evaluate the deformation state such as the interlayer deformation angle.

  An object of the present invention is made in view of the above problems, and provides a gas meter device capable of appropriately evaluating the deformation state of each floor of a building by obtaining an interlayer deformation angle and improving the security function in gas supply. That is.

A first invention for solving the above-described problem is a sensor that measures vibration information of a predetermined floor of a building, a horizontal displacement of the predetermined floor obtained from the vibration information, and a height of the predetermined floor from the ground. A control unit that calculates an interlayer deformation angle of the predetermined floor using the height and shuts off a gas supply according to the interlayer deformation angle, and the control unit determines a horizontal displacement of the predetermined floor. The gas meter device is characterized in that a value obtained by dividing a floor from a height from the ground is calculated as an interlayer deformation angle of the predetermined floor .

  Thereby, the deformation | transformation state in each floor of a building can be evaluated appropriately, and the security function in gas supply can be improved. In other words, in the present invention, since the interlayer deformation angle of each floor can be calculated from the vibration information measured by the gas meter device, a large deformation occurs in the building even though the acceleration is small, such as shaking of a high-rise building due to long-period ground motion. Even in the case where it is, the deformation state can be appropriately evaluated. In addition, the deformation state of each floor can be accurately evaluated by evaluating the deformation state based on the interlayer deformation angle calculated based not only on the horizontal displacement but also on the height factor of the horizontal displacement. Here, the vibration information refers to information indicating the vibration of the object, such as acceleration or speed.

The gas meter device preferably includes an altimeter for measuring a height of the predetermined floor from the ground .

The control unit shuts off the gas supply at the predetermined floor when the interlayer deformation angle exceeds a first threshold, and separates when the interlayer deformation angle exceeds a second threshold higher than the first threshold. It is desirable to shut off the gas supply to the gas meter device on the first floor .

The vibration information is preferably acceleration.
In recent years, high-accuracy triaxial acceleration sensors and the like have become widespread, and by using this, a gas meter device capable of accurately measuring vibration information can be easily configured.

A second aspect of the invention is a gas supply control method for controlling gas supply of a building, wherein the gas meter device measures vibration information of a predetermined floor of the building with a sensor, and from the vibration information by a control unit. Calculating the interlayer deformation angle of the predetermined floor using the obtained horizontal displacement of the predetermined floor and the height of the predetermined floor from the ground, and shutting off the gas supply according to the interlayer deformation angle; And the control unit calculates a value obtained by dividing a horizontal displacement of the predetermined floor by a height from the ground of the predetermined floor as an interlayer deformation angle of the predetermined floor. .

It is desirable to use the height of the predetermined floor from the ground measured by an altimeter included in the gas meter device for calculating the interlayer deformation angle .
Further, the control unit shuts off the gas supply at the predetermined floor when the interlayer deformation angle exceeds a first threshold value, and the interlayer deformation angle exceeds a second threshold value higher than the first threshold value. It is desirable to cut off the gas supply to a gas meter device on another floor .
Furthermore, it is desirable that the vibration information is acceleration.

  According to the present invention, it is possible to provide a gas meter device capable of appropriately evaluating the deformation state of each floor of a building by obtaining an interlayer deformation angle and improving the security function in gas supply.

The figure which shows the building 10 which provided the gas meter apparatus 1 The figure which shows the structure of the gas meter apparatus 1 Flow chart showing gas supply control method Diagram showing shaking, acceleration and horizontal displacement of building 10 It shows the story drift R _n Diagram showing interlayer deformation angle R _n ′

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
(1. Gas meter device)
In FIG. 1, the state which provided the gas meter apparatus 1 which concerns on embodiment of this invention in the building 10 is shown. The building 10 is, for example, a super high-rise building.

  In the building 10, gas is supplied to each floor, and the gas meter device 1 is installed on each floor of the building 10. The gas meter device 1 measures the amount of gas used on the installation floor of the gas meter device 1 and shuts off the gas supply according to the interlayer deformation angle on the installation floor when a shake due to an earthquake or the like occurs.

  FIG. 2 is a block diagram showing the configuration of the gas meter device 1. As shown in FIG. 2, the gas meter device 1 includes a control unit 11, an input unit 12, a display unit 13, an acceleration sensor 14, a shutoff valve 15, a pressure sensor 16, a flow sensor 17, and an I / F (interface) unit 18. Prepare.

  The control unit 11 is connected to each unit of the gas meter device 1 and exchanges information to calculate an interlayer deformation angle and control gas supply. The control unit 11 can be realized by a microcomputer having a CPU, RAM, ROM, clock circuit, memory, and the like.

  The input unit 12 is for inputting numerical values and the like to the gas meter device 1 and performing various settings. In the present embodiment, the floor number and height of the installation floor of the gas meter device 1 are input by inputting the floor number, height (from the ground), etc. of the gas meter device 1 through the input unit 12 and stored in the memory or the like of the control unit 11. Etc. are set.

  The display unit 13 is a liquid crystal panel or the like, and is used for displaying gas usage and alarms.

  The acceleration sensor 14 is a sensor that measures acceleration as vibration information of the installation floor (predetermined floor) of the gas meter device 1. As the acceleration sensor 14, a triaxial acceleration sensor that measures accelerations in triaxial directions orthogonal to each other as described in Patent Document 1 can be used. However, the acceleration sensor 14 only needs to measure at least the acceleration in the horizontal direction.

  The shutoff valve 15 opens and closes the gas flow path 20 under the control of the control unit 11, thereby shutting off the gas supply and gas supply on the installation floor.

  The pressure sensor 16 and the flow rate sensor 17 are sensors for measuring the pressure in the gas flow path 20 and the gas flow rate, respectively.

  The I / F unit 18 is an interface for performing data communication with another device. In the present embodiment, the gas meter device 1 is communicably connected to the gas meter devices 1 on the upper and lower floors via the I / F unit 18. The connection form may be wired or wireless.

  In the present embodiment, the control unit 11 of the gas meter device 1 obtains the horizontal displacement of the installation floor from the acceleration measured by the acceleration sensor 14, and uses the horizontal displacement of the installation floor, the number of floors, the height, etc., and the interlayer deformation angle of the installation floor. It has a calculation function to calculate. Moreover, it has a gas supply control function that closes the shutoff valve 15 according to the calculated interlayer deformation angle and shuts off the gas supply.

(2. Gas supply control method by gas meter device 1)
Next, a gas supply control method by the gas meter device 1 will be described with reference to FIG. FIG. 3 is a flowchart showing the gas supply control method, and each step is executed by the gas meter device 1. The gas meter device 1 receives the height of the upper floor in advance from the gas meter device 1 on the upper floor of the installation floor and stores it in the memory or the like of the control unit 11 in order to calculate the interlayer deformation angle described later. To do.

  In this embodiment, the acceleration of the installation floor is measured at predetermined intervals by the acceleration sensor 14 of the gas meter device 1 (S1). When the building 10 shakes as shown in FIG. 4A due to an earthquake or the like, the acceleration is measured as shown in FIG. 4B. FIG. 4B shows a time history waveform of acceleration with time on the horizontal axis and acceleration on the vertical axis. In the figure, “A” indicates the current time when the acceleration was measured in S1.

  Subsequently, the control unit 11 of the gas meter device 1 calculates the horizontal displacement of the installation floor at the current time A by integrating the time history waveform of the acceleration measured by the acceleration sensor 14 on the second floor (S2). FIG. 4C is an example of the horizontal displacement calculated in this way, and shows a displacement response waveform with the horizontal axis representing time and the vertical axis representing horizontal displacement.

  And the control part 11 of the gas meter apparatus 1 calculates the interlayer deformation angle of the installation floor in the present time A (S3).

  In S <b> 3, the control unit 11 of the gas meter device 1 receives the horizontal displacement of the upper floor at the current time A calculated by the upper gas meter device 1 in the procedure of S <b> 1 and S <b> 2 from the upper gas meter device 1. In addition, about the gas meter apparatus 1 of each floor, it shall synchronize and the measurement of the acceleration in S1 shall be performed simultaneously.

Then, the control unit 11 of the gas meter device 1 sets the interlayer deformation angle R _n of the installation floor n of the gas meter device 1 shown in FIG. 5 between the horizontal displacement d _{n + 1} of the upper floor n + 1 and the horizontal displacement d _n of the installation floor _n . Using the difference and the difference between the height H _{n + 1 of the} upper floor n + 1 and the height H _n of the installation floor n (floor height of the installation floor n), the calculation is performed by the following equation (1).
R _n = (d _{n + 1} −d _n ) / (H _{n + 1} −H _n ) (1)

When the interlayer deformation angle Rn calculated in S3 is _equal to or smaller than the threshold (S4; NO), the control unit 11 of the gas meter device 1 continues to supply the gas as it is. On the other hand, when the story drift R _n exceeds a threshold value (S4; YES), by closing the shutoff valve 15 for safety to block the gas supply installation floor n (S5).

  In the present embodiment, the interlayer deformation angle of each floor is calculated in real time by the gas meter device 1 of each floor of the building 10 in the above procedure, and the gas supply can be shut off according to the interlayer deformation angle. The threshold value is set in advance by the gas meter device 1 and stored in the memory of the control unit 11 or the like.

  According to this embodiment described above, the deformation state in each floor of the building 10 can be appropriately evaluated, and the security function in gas supply can be improved. That is, in this embodiment, since the interlayer deformation angle of the installation floor can be calculated from the acceleration measured by the gas meter device 1, when the acceleration does not show a very large value, such as the shaking of a high-rise building against long-period ground motion, Even when there is a possibility that a large deformation occurs in the building 10, the deformation state can be appropriately evaluated. In addition, if only horizontal displacement is used, it is difficult to evaluate because the deformation state of the building differs depending on the height of the measurement position even if the displacement value is the same, but deformation is caused by the interlayer deformation angle calculated based on the factor of horizontal displacement. By evaluating the state, the deformation state of each floor can be accurately evaluated.

  In the present embodiment, the gas meter device 1 receives the horizontal displacement at the same time as the horizontal displacement of the installation floor from the gas meter device 1 of the upper floor, and determines the interlayer deformation angle of the installation floor as the difference between these horizontal displacements, and Calculate using the difference in height between the installation floor and the upper floor. Therefore, it is possible to accurately calculate the interlayer deformation angle of each floor in real time by using a plurality of gas meter devices 1, and to improve the immediacy of gas supply control.

  However, the present invention is not limited to that described in the above embodiment. For example, in the above embodiment, the acceleration is measured as vibration information on the installation floor, but it is also possible to directly measure the speed and the horizontal displacement as vibration information using a sensor. When measuring the velocity, the horizontal displacement can be calculated by integrating this, and the interlayer deformation angle can be calculated in the same manner as described above. However, when measuring acceleration, there is an advantage that the gas meter device 1 capable of accurate measurement can be simply configured by using a highly accurate triaxial acceleration sensor or the like.

  Further, in the present embodiment, the interlayer deformation angle is calculated by the control unit 11 of the gas meter device 1, but this calculation function can also be realized by a calculation device provided outside. In this case, the said arithmetic unit is also contained in the component of the gas meter apparatus 1 in this invention.

  Further, in the present embodiment, the interlayer deformation angle is calculated in real time and the gas supply cutoff determination is performed. However, after the vibration is converged, the gas supply cutoff determination may be performed using the maximum value of the interlayer deformation angle during vibration. Is possible.

For example, after the acceleration measured by the acceleration sensor 14 returns to substantially zero as the vibration converges, the maximum value of (d _{n + 1} −d _n ) obtained from the displacement response waveforms at the time of vibration on the installation floor and the upper floor is calculated. As the numerator of (1), the maximum value of the interlayer deformation angle can be calculated from the equation (1). Further, in the case where it can be assumed that the maximum value of the interlayer deformation angle and the maximum value of the horizontal displacement of each floor occur at the same time, the maximum values d _{n, max} , d _{n + 1,} during vibration of the horizontal displacement of the installation floor and the upper floor are assumed _. The maximum value of the interlayer deformation angle can be calculated in the same manner as described above by calculating _max and using the difference (dn _{+ 1, max- dn, max} ). In this case, strict synchronization of the gas meter device 1 can be omitted.

  Furthermore, in the present embodiment, the gas meter device 1 controls the gas supply on the floor where the gas meter device 1 is installed. However, the present invention is not limited to this, and the gas supply on all floors is simultaneously shut off according to the determination result of S4. Is also possible. For example, when the determination in S4 is YES, the gas meter device 1 cuts off the gas supply on the installation floor, and also transmits a control signal to the gas meter device 1 on another floor to cut off the gas supply, Shut off gas supply.

  Further, the threshold value used for the evaluation of the interlayer deformation angle can be variously determined in consideration of the gas supply shutoff method and the gas supply security. For example, two threshold values are set, and when the interlayer deformation angle exceeds the lower threshold value, the gas supply on the installation floor is shut off as in the above embodiment, and when the higher threshold value is exceeded, it is dangerous. It is also possible to perform control so as to shut off the gas supply on all floors due to high performance.

  In the present embodiment, the height of the installation floor of the gas meter device 1 is input from the input unit 12 to the gas meter device 1. However, the gas meter device 1 is provided with an altimeter or the like, and the height measured by the altimeter is You may make it use for calculation of an interlayer deformation angle as the height of an installation floor. As a result, it is possible to save the trouble of inputting the height of the installation floor, and it is possible to eliminate mistakes such as erroneously inputting the height.

  Furthermore, in the present embodiment, the horizontal displacement and height of the installation floor and the upper floor of the gas meter device 1 are compared to determine the interlayer deformation angle of the installation floor, but instead of the upper floor, the horizontal displacement of the lower floor of the installation floor Height may be used. Also in this case, the interlayer deformation angle can be obtained in the same manner as described above from the horizontal displacement and height difference between the installation floor and the lower floor, and this can be used as the interlayer deformation angle of the installation floor. Further, in this embodiment, the example in which the upper floor of the installation floor is the first floor of the installation floor, that is, the directly upper floor is described, but the upper floor of the installation floor is not less than two floors higher than the installation floor. It may be. Also in this case, the interlayer deformation angle can be obtained from the horizontal displacement and the height difference in the same manner as described above. The same applies to the lower floor of the installation floor.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The second embodiment is an example different from the first embodiment in the calculation of the interlayer deformation angle, and the other points are the same as those of the first embodiment, and thus the description thereof is omitted.

In the second embodiment, an approximate interlayer deformation angle is calculated as shown in FIG. That is, in S3 described above, the control unit 11 of the gas meter device 1 uses the following equation (1 ′) for the interlayer deformation angle R _n ′ of the installation floor n using the horizontal displacement d _n and the height H _n of the installation floor n. To calculate approximately.
R _n ′ = d _n / H _n (1 ′)

By using this interlayer deformation angle R _n ′ for the processing after S4, the same effect as in the first embodiment can be obtained. In addition, there is an advantage that it is not necessary to cooperate with the gas meter device 1 on the upper floor or the lower floor, and calculation and the like can be simplified. On the other hand, the first embodiment has an advantage that the interlayer deformation angle can be obtained more accurately and the accuracy is high.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these are naturally within the technical scope of the present invention. Understood.

DESCRIPTION OF SYMBOLS 1; Gas meter apparatus 10; Building 11; Control part 12; Input part 13; Display part 14; Acceleration sensor 15; Shut-off valve 16; Pressure sensor 17;

Claims (8)

A sensor for measuring vibration information of a predetermined floor of the building;
The interlayer deformation angle of the predetermined floor is calculated using the horizontal displacement of the predetermined floor obtained from the vibration information and the height of the predetermined floor from the ground, and the gas supply is shut off according to the interlayer deformation angle. A control unit;
Equipped with,
The said control part calculates the value which divided the horizontal displacement of the said predetermined floor by the height from the ground of the said predetermined floor as an interlayer deformation angle of the said predetermined floor, The gas meter apparatus characterized by the above-mentioned . The gas meter device according to claim 1, further comprising an altimeter that measures a height of the predetermined floor from the ground . The control unit shuts off the gas supply at the predetermined floor when the interlayer deformation angle exceeds a first threshold, and separates when the interlayer deformation angle exceeds a second threshold higher than the first threshold. The gas meter device according to claim 1 or 2 , wherein the gas meter device on the floor of the floor is configured to cut off the gas supply .   The gas meter device according to any one of claims 1 to 3, wherein the vibration information is acceleration. A gas supply control method for controlling gas supply in a building,
Gas meter device
A step of measuring vibration information of a predetermined floor of the building by a sensor;
The controller calculates the interlayer deformation angle of the predetermined floor using the horizontal displacement of the predetermined floor obtained from the vibration information and the height of the predetermined floor from the ground, and the gas deformation according to the interlayer deformation angle is calculated. Shutting off the supply;
The execution,
The said control part calculates the value which divided the horizontal displacement of the said predetermined floor by the height from the ground of the said predetermined floor as an interlayer deformation angle of the said predetermined floor, The gas supply control method characterized by the above-mentioned . The gas supply control method according to claim 5, wherein a height from the ground of the predetermined floor measured by an altimeter provided in the gas meter device is used for calculation of the interlayer deformation angle . The control unit shuts off the gas supply at the predetermined floor when the interlayer deformation angle exceeds a first threshold, and separates when the interlayer deformation angle exceeds a second threshold higher than the first threshold. The gas supply control method according to claim 5 or 6 , wherein the gas meter device on the floor of the floor is configured to cut off the gas supply.   The gas supply control method according to any one of claims 5 to 7, wherein the vibration information is acceleration.

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