JP3170212U - Control box for pneumatic floating seismic isolation device - Google Patents

Abstract

Provided is a control box for controlling the operation of a pneumatic floating seismic isolation device in order to effectively use finite compressed air in an air tank of the pneumatic floating seismic isolation device at the time of frequent earthquakes and power outages.
A control box for controlling a pneumatic floating seismic isolation device that senses shaking and floats the entire building, floor, or base isolation table with air pressure, and a vibration sensing device 16 that senses shaking; And an acceleration sensor 15 having a band-pass filter that passes the frequency of the fluctuation in the specified range and cuts or attenuates the frequency outside the specified range. The numerical value obtained from the vibration sensor and the acceleration sensor can select the normal mode and the air saving mode in which the pneumatic floating seismic isolation device is operated in the event of an earthquake according to the specified value.
[Selection] Figure 2

Description

  The present invention provides a board on the foundation bottom of the building, provides a sealing material so that air does not leak from the gap between the foundation bottom and the board, and supplies air between the foundation bottom and the board when an earthquake occurs. It is related with the control box which controls the pneumatic floating type seismic isolation device which floats the said building and exhibits the seismic isolation effect.

  As shown in Patent Document 1, in order to protect a building, household goods and residents in the building from an earthquake, a board is provided on the foundation bottom of the building, and a seal is provided so that air does not leak from the gap between the foundation bottom and the board. Pneumatic floating type seismic isolation devices that exhibit a base isolation effect by surfacing the building by providing materials and supplying air between the foundation bottom and the panel when an earthquake occurs are disclosed.

  However, the idea described in Patent Document 1 is that each time an earthquake occurs, the valve that senses the earthquake opens, compressed air is injected into the gap between the board and the bottom board integrated with the building, and the building rises. Even if the earthquake is weak, the valve will open and operate, so the compressed air in the air tank is frequently used when aftershocks continue. I was worried that I wouldn't be able to surface.

  In addition, power supply may stop after the occurrence of a large earthquake, but even if a relatively large aftershock occurs in the meantime, there is a problem that the compressor does not operate due to the power stop and the building cannot be lifted.

Japanese Patent Application No. 2005-9200

  Therefore, the present invention controls the operation of the pneumatic floating seismic isolation device in order to effectively use the compressed air in the air tank that is installed in the pneumatic floating seismic isolation device in the event of frequent earthquakes and power outages. Provide a control box.

  In order to solve the above-mentioned problems, the present invention controls a pneumatic floating type seismic isolation device that is installed in a building and senses shaking to float the whole building, floor, or base isolation table with air pressure. A vibration sensor that senses the shaking of the earthquake and an acceleration sensor that includes a bandpass filter that passes the frequency of the shaking in the specified range and cuts or attenuates the frequency outside the specified range. A normal mode in which the pneumatic floating seismic isolation device is operated each time an earthquake in which the numerical value obtained from the vibrator and acceleration sensor is greater than or equal to the specified value, and the numerical value obtained from the vibration sensor and acceleration sensor is greater than or equal to the specified value After the occurrence of the earthquake, the pneumatic floating seismic isolation device is operated only during a strong earthquake that is set higher than the specified value for a predetermined time, and is empty again at the specified value after the predetermined time has elapsed. Flotation Doshiki was configured of a control box of the seismic isolation device can select the air saving mode to operational.

  In addition, when connected to a compressed air tank provided in the pneumatic floating type seismic isolation device, the air pressure in the air tank is sensed, and when the air pressure in the air tank falls below a specified value, an earthquake of 100 gal or more occurs. Only the control box is provided with a pressure switch for changing the setting to operate the pneumatic floating type seismic isolation device.

  Furthermore, the control box is configured such that the predetermined time is 48 hours.

  Since the present invention is configured as described above, the operation of the pneumatic floating seismic isolation device can be controlled. Therefore, the compressed air in the air tank installed in the pneumatic floating seismic isolation device can be used efficiently. Can do.

  Moreover, the limited compressed air can be used more efficiently at the time of a power failure.

It is a figure which shows the control box of the pneumatic floating type seismic isolation apparatus which is this invention. It is a circuit diagram of the control box of the pneumatic floating type seismic isolation device of the present invention. It is a figure which shows the cable which connects the control box of the pneumatic floating type seismic isolation device which is this invention, and a pneumatic floating type seismic isolation device. It is a flowchart of the control box of the pneumatic floating type seismic isolation device which is the present invention.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  First, each part which comprises the control box which is this invention is demonstrated using FIGS. 1-3.

  1 is a diagram showing a control box of a pneumatic floating seismic isolation device according to the present invention, FIG. 2 is a circuit diagram of a control box of the pneumatic floating seismic isolation device, and FIG. 3 is a control box and air pressure of the pneumatic floating seismic isolation device. It is a figure which shows the cable which connects a floating type seismic isolation apparatus.

  As shown in FIG. 1, a control box 1 according to the present invention comprises a substantially rectangular parallelepiped box 2, and a changeover switch 4 for switching the operation mode of the control box 1 on the front surface 2a of the box 2, and the operating state of a designated portion. A display unit 3 for displaying, an operation test button 5 for confirming the operation of the control box 1, a reset button 5a for stopping the operation of the pneumatic floating type seismic isolation device connected to the control box 1 and for stopping the flicker buzzer that rings when there is an abnormality. The adjusting unit 6 for adjusting the operating time of the designated portion and a plurality of protective fuses are provided.

  The operation mode that can be switched by the changeover switch 4 is a normal mode and an air saving mode, and the normal mode is a mode in which the pneumatic floating seismic isolation device is activated each time an earthquake exceeding a specified value is detected. In the air saving mode, after detecting an earthquake exceeding a specified value and operating the pneumatic floating type seismic isolation device, the air pressure floating is performed only when a strong shaking earthquake set higher than the specified value occurs for a predetermined time. In this mode, the pneumatic seismic isolation device operates and the pneumatic floating seismic isolation device operates at the specified value after a predetermined time.

  The display unit 3 includes an air balancer lamp 3a, a floating lamp 3b, a position correction lamp 3c, a 48-hour air saving lamp 3d, an air pressure abnormality lamp 3e, a voltage abnormality lamp 3f, and a monitoring lamp 3g.

  When the air balancer solenoid valve is operating, the air balancer lamp 3a is lit. When the levitation solenoid valve is operating, the levitation lamp 3b is lit and the position correcting solenoid valve is operating. In this case, the position correction lamp 3c is turned on.

  When the air-saving mode is selected with the changeover switch 4, the standby is activated only for a predetermined time after operating the pneumatic floating type seismic isolation device due to an earthquake exceeding the specified value, that is, only when there is a strong earthquake exceeding the specified value. During the time, the 48-hour air saving lamp 3d is turned on. The 48-hour air saving lamp 3d is turned off after a predetermined time has elapsed.

  When the battery voltage becomes 10.0 V or less, the voltage abnormality lamp 3f is turned on and the buzzer 28 is sounded at the same time in order to determine that the battery has reached the end of its service life and to promote replacement. The above determination is made by creating a reference voltage in the circuit and comparing the input voltage with a comparator.

  When the remaining amount of the air tank 20 of the pneumatic floating type seismic isolation device is insufficient, the air pressure abnormality lamp 3f is turned on and the buzzer 28 sounds at the same time. The sound of the buzzer 28 can be stopped by the reset button 5a. However, the air pressure abnormality lamp 3f continues to be lit until the shortage of the air tank 20 is resolved, and the buzzer 28 sounds again. Note that the reference for determining the shortage of the remaining amount of the air tank 20 is set by the pneumatic switch 27 connected to the air tank 20 side.

  The monitoring lamp 3g is lit while the control box 1 is in operation, that is, while monitoring and waiting for an earthquake. The state of monitoring and waiting for an earthquake is the normal mode or the air saving mode.

  The operation test button 5 is a button used when performing an operation test of the pneumatic floating type seismic isolation device. By this button, “lift”, “air balancer”, and “position correcting device” are sequentially moved.

  When the reset button 5a is pressed for a predetermined time (for example, 5 seconds or more) during the operation of the pneumatic floating seismic isolation device, a reset sound is generated and the operation of the pneumatic floating seismic isolation device can be stopped. Further, as described above, when the voltage abnormality lamp 3f and the air pressure abnormality lamp 3e are lit and the buzzer 28 is sounding, the reset button 5a is operated for a predetermined time (when the operation of the pneumatic floating seismic isolation device is stopped). The sound of the buzzer 28 can be stopped by pressing it for a time different from the predetermined time (for example, about 1 second). If the voltage is abnormal, only the buzzer 28 can be stopped. Each abnormal lamp is lit until the cause of the abnormality is resolved. If the air pressure is abnormal, the cause of the abnormality is resolved even if the buzzer 28 is stopped. If not, it will ring again.

  The adjustment unit 6 includes a balancer time adjustment knob 6a, a flying time adjustment knob 6b, and a position correction time knob 6c. The balancer time adjustment knob 6a can change the operation time of the air balancer solenoid valve from 10 seconds to 110 seconds, and the initial setting is 30 seconds. The ascent time adjusting knob 6b can change the operating time of the ascending valve solenoid valve from 3 seconds to 28 seconds, and the initial setting is 8 seconds. Further, the position correction time knob 6c can change the operation time of the position correction device between 30 seconds and 120 seconds, and the initial setting is 60 seconds.

  The protective fuse is composed of four protective fuses: an air balancer electromagnetic valve protective fuse 7, an operating device protective fuse 7a, a position correcting electromagnetic valve protective fuse 7b, and a floating electromagnetic valve protective fuse 7c.

  When an overcurrent flows due to an abnormality of the control box 1 according to the present invention, the operating device protection fuse 7a is blown, and the monitoring lamp 3g is turned off. In addition, when the wiring of the solenoid valve is short-circuited, the corresponding fuses (air balancer solenoid valve protection fuse 7a, position correction solenoid valve protection fuse 7b, levitation solenoid valve protection fuse 7c) are blown, Only the solenoid valve corresponding to the blown fuse will not work.

  On the back surface 2b of the box 2, a connector 8a for connecting the control box 1 of the present invention to the pneumatic floating type seismic isolation device, an external contact 8b for arbitrarily connecting an external seismic detection device, the pressure A pneumatic contact 8c for connecting the switch and a connecting portion 8 including an earth 8d are provided.

  The connector 8a has eight holes, and connects the control box 1 and the pneumatic floating seismic isolation device by connecting the connecting portion 17a of the cable 17 shown in FIG.

  The external contact 8b is a contact for externally connecting the earthquake detection device to the control box 1, and the pneumatic contact 8c is a contact for connecting a switch built-in pressure gauge. The switch built-in pressure gauge is connected to the air tank 20 of the pneumatic floating seismic isolation device, and monitors the shortage of the air tank 20.

  On the upper surface 2c of the box 2, there are an operation mode changeover switch 9 for switching the operation mode of the control box 1 according to the present invention, a volume 10 for adjusting the vertical shaking sensitivity of the earthquake, and a volume 11 for adjusting the horizontal shaking sensitivity of the earthquake. And a power switch 12 which is a main power source.

  The operation mode changeover switch 9 is a switch for switching between an installation mode and an operation mode. In the installation mode, the solenoid valve of the pneumatic floating seismic isolation device is actually operated even when the control box 1 is operated and the solenoid valve operation lamp is lit. Since is not activated, this mode is selected until the installation of the control box 1 is completed.

  On the other hand, the operation mode is selected when the electromagnetic valve of the pneumatic floating type seismic isolation device actually operates according to the operation lamp of the electromagnetic valve, so that the installation of the control box 1 is completed and a standby state for detecting an earthquake is set. Mode.

  The vertical shaking sensitivity adjustment volume 10 is a volume for adjusting the sensitivity of the sensor to the vertical shaking of an earthquake represented by P waves. When the clockwise volume is twisted, the sensitivity increases, and the control box 1 operates even with a slight shaking. .

  The horizontal shaking sensitivity adjustment volume 11 is a volume that adjusts the sensitivity of the sensor to an earthquake roll represented by S waves. Like the vertical shaking sensitivity adjustment volume 10, the sensitivity increases when the volume is twisted clockwise. The control box 1 can be operated with a slight shaking.

  The power switch 12 is a main power source of the control box 1 according to the present invention, and is turned off on the front side and turned on on the back side. When the power switch 12 of the control box 1 is turned on, the operation mode changeover switch 9 is basically set in the installation mode.

  As shown in FIG. 2, a microcomputer board 13, a sensor board 14 connected to the microcomputer board 13, and a vibration sensor 16 are installed inside the control box 1 according to the present invention.

  As shown in FIG. 2, the microcomputer board 13 includes a microcomputer 13a. The microcomputer 13a includes the display unit 3, a power supply 12, an operation test button 5, a reset button 5a, an operation mode changeover switch 9, an adjustment unit 6, The fuses 7 to 7 c, the connection portion 8, and the vibration sensor 16 are connected.

  The sensor substrate 14 is connected to the vertical shake sensitivity adjustment volume 10 and the horizontal shake sensitivity adjustment volume 11 and includes the acceleration sensor 15.

  The operation mode changeover switch 9 is connected to a timer for the levitation solenoid valve, a timer for the balancer solenoid valve, and a timer for the position correction solenoid valve.

  The timer of the levitation solenoid valve is connected to the levitation time adjustment knob 6b and to the connector 8 and the levitation solenoid valve protection fuse 7c through an output circuit.

  Similarly, the timer of the solenoid valve for balancer is connected to the balancer time adjustment knob 6a and is connected to the connector 8 and the protective fuse 7 of the solenoid valve for air balancer through an output circuit.

  Similarly, the timer for the position correcting solenoid valve is connected to the position correcting time knob 6c and to the connector 8 and the position correcting solenoid valve protection fuse 7b through an output circuit.

  The power source 12 is further connected to the operating device protection fuse 7a. The power source 12 and the microcomputer 13a are connected to a voltage abnormality determination device.

  The vertical fluctuation sensitivity adjustment volume 10 of the sensor board 14 is connected to the microcomputer board 13 via a comparator 22b. The comparator 22b is connected to the sensor Z of the acceleration sensor 15 via an amplifier 23b and a bandpass filter 24b. It is connected to the.

  The X axis of the horizontal swing sensitivity adjustment volume 11 of the sensor substrate 14 is connected to the microcomputer substrate 13 via a comparator 22, and the comparator 22 is connected to the acceleration sensor 15 via an amplifier 23 and a band pass filter 24. Connected to the sensor X.

  The Y axis of the horizontal sensitivity adjustment volume 11 of the sensor board 14 is connected to the microcomputer board 13 via a comparator 22a. The comparator 22a is connected to the acceleration sensor 15 via an amplifier 23a and a bandpass filter 24a. Connected to the sensor Y.

  As shown in FIG. 3, the cable 17 is composed of eight cables 17b to 17i, and one end of each of the cables 17b to 17i constitutes a connecting portion 17a.

  The cable 17b is connected to the positive pole of the battery 19, the cable 17c is connected to the negative pole of the battery 19, and the battery 19 is connected to the charger 19a. Reference numeral 19b indicates an outlet of the charger 19a.

  The cables 17 d and 17 e are connected to an air balancer solenoid valve 18, and the air balancer solenoid valve 18 is connected to a valve 21. The valve 21 is connected to an air tank 20 and an air outlet 26. Further, the air tank 20 is connected to a compressor 25.

  The cables 17f and 17g are connected to a levitation electromagnetic valve 18a, and the levitation electromagnetic valve 18a is connected to a valve 21. The valve 21 is connected to the air tank 20 and the air outlet 26a. Further, the air tank 20 is connected to a compressor 25.

  The cables 17h and 17i are connected to a position correcting solenoid valve 18b, and the position correcting solenoid valve 18b is connected to a valve 21. The valve 21 is connected to the air tank 20 and the air outlet 26b. Further, the air tank 20 is connected to a compressor 25.

  Next, the flow of the operation of the control box 1 according to the present invention will be described with reference to FIG.

  As shown in FIG. 4, in the control box 1, after the power is turned on, “device initialization”, “reset button processing”, “voltage abnormality”, “air pressure abnormality”, “operation test”, “earthquake detection”, Processing of “sequence execution” and “solenoid valve output” is executed.

  In “Device initialization”, when the control box 1 is turned on, the voltage error buzzer, voltage error LED display, air pressure error buzzer, air pressure error LED display, sequence execution and 48-hour timer count are set to the initial values. A buzzer sounds.

  The “reset button process” is a process for stopping the sounding of the buzzer 28 when the monitoring LED blinks and the buzzer 28 sounds, or to stop the operation during the operation of the pneumatic floating type seismic isolation device.

  When the monitoring LED blinks due to an air pressure abnormality or a voltage abnormality and the buzzer 28 sounds, the sounding of the buzzer 28 is stopped by pressing the reset button for a predetermined time (for example, 1 second). Note that the monitoring LED blinks until the cause of the abnormality is resolved.

  When a pneumatic floating type seismic isolation device is activated due to the occurrence of an earthquake, a voltage abnormality buzzer and voltage can be generated by pressing the reset button for a predetermined time (for example, 5 seconds, which is different from the time pressed when the abnormality occurs). Abnormal LED display, air pressure abnormal buzzer, air pressure abnormal LED display, sequence execution, 48-hour timer count, each solenoid valve timer reset, all output reset are performed, and the operation of the pneumatic floating seismic isolation device is stopped.

  “Voltage abnormality” means that when the battery connected to the control box 1 falls below a predetermined voltage (for example, 10 V), it is determined that the battery has reached the end of its life, the voltage abnormality lamp blinks, and the buzzer 28 sounds. The buzzer 28 can be stopped by pressing the reset button, and the abnormal voltage lamp is extinguished by setting it to a predetermined voltage or higher by a method such as battery replacement.

  “Air pressure abnormality” is judged as abnormal when the remaining amount of the compressed air tank 20 of the pneumatic floating type seismic isolation device monitored by the control box 1 is lower than the air pressure switch operating set pressure, and the air pressure abnormality lamp Flashes and the buzzer 28 sounds. In the case of an abnormal air pressure, the buzzer 28 can be stopped by the reset button, but it rings again if the cause of the abnormality is not resolved. While the air pressure abnormality lamp is lit, the air pressure is floated by shaking at an acceleration (for example, 100 gal to 170 gal) higher than the acceleration of the earthquake set in the normal mode in order to save the compressed air in the compressed air tank 20. It will be changed to operate the seismic isolation device.

  In the “operation test”, it is confirmed whether the pneumatic floating type seismic isolation device operates normally, and after the earthquake, the position correction device is operated to correct the position. If another sequence is executed when the operation test button is pressed, the operation test is not executed. When it is confirmed that another sequence is not executed and the operation test button is pressed, the operation test sequence is executed, and the “floating”, “air balancer”, and “position correcting device” are operated sequentially.

  At the time of “earthquake detection”, if the control box 1 is counting the timer for a predetermined (48) hours, or if the air pressure of the compressed air tank 20 is low, the vibration absorber will have a predetermined acceleration (about 100 gal to 170 gal). If it is not detected, the levitation valve and air balancer will not operate.

  If neither the 48-hour timer count nor the air pressure abnormality is detected, the floating valve and the air balancer are activated when the vibration sensor or the acceleration sensor detects a predetermined acceleration (about 50 gal). In this case, if the detection is performed in the normal mode, the levitation valve or the air balancer is operated even if the next detected acceleration is about 50 gal. If the detection is performed in the air saving mode, a predetermined (48) time timer is used. The count is activated, and the levitation valve and the air balancer do not operate unless a stronger swing than normal (about 100 gal to 170 gal) is detected within a predetermined time.

  During the predetermined (48) hour timer count, the 48 hour air saving lamp is displayed, and when the predetermined (48) hour has elapsed, the timer is automatically reset and the 48 hour air saving lamp is turned off.

  “Sequence execution” includes an operation test that is performed during so-called monitoring, in which a floating valve and an air balancer are operated when an earthquake occurs, and after the installation of the control box 1 and after an earthquake occurs and a pneumatic floating seismic isolation device is activated. Each sequence cannot be performed while another sequence is running.

  “Solenoid valve output” indicates that each indicator lamp lights up when the levitation output, air balancer output, and position correction output are output, and when it is output during the operation mode, the corresponding solenoid valve is turned on, and the installation mode When the output is in the middle, only the indicator lamp is lit and each solenoid valve does not operate.

  From the above-described configuration, the control box 1 according to the present invention is a pneumatic floating type seismic isolation device that is installed in a building and senses shaking to float the entire building, floor, or base isolation table with air pressure. A control box for controlling, comprising a vibration sensor for detecting an earthquake shake, and an acceleration sensor having a bandpass filter that passes a specified range of vibration frequencies and cuts or attenuates frequencies outside the specified range. A normal mode in which the pneumatic floating seismic isolation device is operated each time an earthquake in which the numerical value obtained from the vibration sensor and the acceleration sensor is equal to or greater than a specified value, and the numerical value obtained from the vibration sensor and the acceleration sensor are After the occurrence of an earthquake that is greater than or equal to the specified value, the predetermined time is set to be higher than the specified value. It can be selected air saving mode that allows actuating the pneumatic floating isolator again the specified value.

  The control box 1 according to the present invention is connected to a compressed air tank 20 provided in the pneumatic floating seismic isolation device, senses the air pressure in the air tank, and the air pressure in the air tank falls below a specified value. In this case, a pressure switch for changing the setting so that the pneumatic floating seismic isolation device operates only when an earthquake of 100 gal or more occurs is provided.

  The floor refers to a floor of an operating room, a chemical store, a manufacturing plant, etc., and a pneumatic floating type seismic isolation device is installed under the floor, and the floor is lifted pneumatically when an earthquake occurs. Protect equipment and people on the club. The seismic isolation table is a device that is installed under a water tank, under exhibits, cultural assets, precision equipment, etc., and protects what is placed on the base isolation table by air-lifting the pedestal part when an earthquake occurs It is.

  Since the control box according to the present invention can be efficiently used while suppressing wasteful use of compressed air of the pneumatic floating seismic isolation device, it greatly contributes to various industries that require earthquake-resistant equipment.

DESCRIPTION OF SYMBOLS 1 Control box 2 Box 2a Front 2b Back 2c Top 3 Display 3a Air balancer lamp 3b Levitation lamp 3c Position correction lamp 3d 48 hour air saving lamp 3e Air pressure abnormality lamp 3f Voltage abnormality lamp 3g Monitoring lamp 4 Mode changeover switch 5 Operation Test button 5a Reset button 6 Adjustment unit 6a Balancer time adjustment knob 6b Ascent time adjustment knob 6c Position correction time knob 7 Solenoid valve protection fuse for air balancer 7a Operation equipment protection fuse 7b Position correction solenoid valve protection fuse 7c Levitation solenoid valve protection Fuse 8 Connection 8a Connector 8b External contact 8c Pneumatic contact 8d Earth 9 Operation mode changeover switch 10 Vertical swing sensitivity adjustment volume 11 Horizontal swing sensitivity adjustment volume 12 Power switch 13 Microcomputer board 13a Microcomputer 14 Sensor base DESCRIPTION OF SYMBOLS 15 Accelerometer 16 Vibration sensor 17 Cable 17a Connection part 17b-17i Cable 18 Air balancer solenoid valve 18a Levitation solenoid valve 18b Position correction solenoid valve 19 Battery 19a Charger 19b Outlet 20 Air tank 21 Valves 22-22b Comparator 23-23b Amplifier 24-24a Band pass filter 25 Compressor 26-26b Air outlet 27 Pneumatic switch 28 Buzzer

Claims (3)

A control box for controlling a pneumatic floating type seismic isolation device that is installed in a building and senses shaking to lift the entire building, floor or base isolation table with air pressure;
A vibration sensor that senses the shaking of the earthquake,
An acceleration sensor with a band-pass filter that passes the frequency of shaking in the specified range and cuts or attenuates frequencies outside the specified range;
A normal mode in which the pneumatic floating seismic isolation device is operated each time an earthquake in which the numerical value obtained from the vibration sensor and the acceleration sensor is equal to or greater than a specified value;
Operate the pneumatic floating seismic isolation device only during strong earthquakes that are set higher than the specified value for a predetermined time after the occurrence of an earthquake whose numerical value obtained from the vibration sensor and acceleration sensor is greater than or equal to the specified value And a control box capable of selecting an air saving mode in which the pneumatic floating seismic isolation device can be operated again at the specified value after the predetermined time has elapsed.   It is connected to the compressed air tank provided in the pneumatic floating type seismic isolation device, senses the air pressure in the air tank, and when the air pressure in the air tank falls below a specified value, only when an earthquake of 100 gal or more occurs 2. The control box according to claim 1, further comprising a pressure switch for changing the setting to activate the pneumatic floating type seismic isolation device.   The control box according to claim 1, wherein the predetermined time is 48 hours.