JP3857890B2 - Wind detection device and base-isolated building using the device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wind detection device and a base-isolated building using the device, and more particularly to a wind detection device suitably applied to a lightweight structure such as a detached house and a base-isolated building using the device.
[0002]
[Prior art]
In a base-isolated building that is seismically isolated so that the upper structure can be displaced in the horizontal direction with respect to the foundation, in order to prevent the upper structure from being unnecessarily shaken by the strong wind except when an earthquake occurs, In some cases, it has been conventionally proposed to incorporate a lock device in a base-isolated building that prohibits the upper structure from being displaced horizontally relative to the foundation.
[0003]
As a seismic isolation building locking device, there are those shown in Japanese Patent Application Laid-Open Nos. 10-306841 and 11-44124. In Japanese Patent Application Laid-Open No. 11-44124, wind speed is measured by a wind speed sensor. A wind detection type control device is shown in which the seismic isolation building lock device is brought into a lock operation state when the wind speed measured by the wind speed sensor exceeds a predetermined value (set value).
[0004]
Conventionally, there have been ultrasonic anemometers in addition to a cup-type anemometer and a propeller-type anemometer as a wind speed sensor.
[0005]
[Problems to be solved by the invention]
For example, as an ultrasonic anemometer, a plurality of sound sources and sensing units are arranged in the horizontal direction so that the wind direction can be detected and the wind speed can be detected according to the arrival time of the sound. It was a thing.
[0006]
Therefore, an object of the present invention is to provide a wind detection device that can solve the above-described problems and can obtain the required accuracy with an inexpensive configuration, and a seismic isolation building using the device.
[0021]
[Means for Solving the Problems]
To solve the above problem,Claim1In the invention of the wind detection device described in 1), the wind detection device includes one pressure measurement unit, the other pressure measurement unit, an outer detection tube, a rectifier, and a differential pressure sensor, The pressure measuring part is a cylinder, the outer detection tube is a cylinder covering the tip of the other pressure measuring part, and the rectifying means is composed of two substantially parallel disks. One disk is attached to the outer peripheral surface of the cylinder of the other pressure measurement unit, the other disk is attached to the tip of either the other pressure measurement unit or the outer detection tube, the outer detection tube and the other pressure measurement unit A feature is that a space between the pressure measuring unit and a space inside the other pressure measuring unit are communicated with each other.
[0022]
  Claim constructed in this way1According to the invention, one of the two disks is attached to the outer peripheral surface of the cylinder of the other pressure measurement unit, and the other disk is attached to the tip of either the other pressure measurement unit or the outer detection tube. By attaching the two discs of the rectifying means to the other pressure measurement unit (or the other pressure measurement unit and the outer detection tube) without providing the column, such as mounting, the differential pressure reduction due to the column is reduced. Occurrence can be avoided.
  In addition, the space between the outer detection tube and the other pressure measurement unit and the space inside the other pressure measurement unit are communicated with each other, so that the outer detection tube passes between the two substantially parallel disks. The negative pressure inside the outer detection tube due to the wind current flowing in front of the opening can be obtained by measuring the pressure inside the cylinder of the other pressure measuring unit.
[0023]
  Claim2In the wind detection device described in claim 1, the claim1In the described wind sensing device, a housing that forms a closed space with the one disk as an upper plate is attached to the one disk, and one pressure measurement unit and a differential pressure sensor are provided inside the housing. It is characterized by being provided.
[0024]
  Claim constructed in this way2According to the invention, the upper plate of the hanging that constitutes the closed space is made into one disk, so that the rectifying means and the housing are integrated into one pressure measuring device, the other pressure measuring device, and the outer detection tube. And the wind detection device provided with the rectifying means and the differential pressure sensor can be made into a compact shape, and since it can be made into such a compact shape, this wind detection device can be transported or attached easy.
[0025]
  Claim3In the invention of the wind detection device described in the above,1Or claims2In the described wind detecting device, the diameter and interval of the two disks are optimized so that the vertical angle characteristic is minimized.
[0026]
  Claim constructed in this way3According to the invention, the diameter and interval of the two disks are optimized so that the vertical angle characteristic is minimized, so that the wind speed can be measured stably even from the top and bottom of the expected range. can do.
[0027]
  Claim4In the invention of the seismic isolation building described in claim 1, claims 1 to3The wind detection device according to any one of the above is provided in a lock device.
[0028]
  Claim constructed in this way4According to the present invention, claims 1 to3By installing the wind detection device in the lock device, it is possible to avoid a decrease in habitability due to the wind sway without being shaken by strong winds, and also to change in the horizontal direction only in the event of an earthquake and not to follow the ground shaking It can be a building.
[0029]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1
Hereinafter, a specific first exemplary embodiment of the present invention will be described together with illustrated examples.
[0030]
1 and 2 show Embodiment 1 of the present invention.
[0031]
First, the structure will be described. In FIG. 1, reference numeral 1 denotes an upper structure of a base-isolated building, and 2 denotes a foundation. The upper structure 1 is seismically isolated on the foundation 2 so as to be displaceable in the horizontal direction by a well-known seismic isolation device not shown. The seismic isolation building is a lightweight structure such as a detached house.
[0032]
The seismic isolation building is provided with the following locking device 16 that prohibits the upper structure 1 from being displaced in the horizontal direction with respect to the foundation 2 in a strong wind.
[0033]
The foundation 2 is made of concrete reinforced with a reinforcing bar or the like, and the upper opening-shaped chamber 3 is directly formed in the foundation 2 as a box-shaped depression. The chamber 3 is filled with a large number of steel balls 4 having the same diameter of about 2 to 3 cm.
[0034]
A cylinder body 7 of a pneumatic cylinder device 6 as an actuator for reciprocating the anchor 5 up and down is attached to the upper structure 1 in a fixed state. The pneumatic cylinder device 6 defines an upper cylinder chamber (lock operation side cylinder chamber) 9 and a lower cylinder chamber (lock release side cylinder chamber) 10 on both sides of a piston 8 in a cylinder body 7, and an electromagnetic valve 12. Thus, the high pressure air is supplied to either the upper cylinder chamber 9 or the lower cylinder chamber 10 from the compressor 11 (or the tank 11a) having the tank 11a.
[0035]
An anchor 5 is attached to the lower end of a downwardly extending piston rod 13 provided on the lower surface side of the piston 8 of the pneumatic cylinder device 6, and the anchor 5 is disposed at a position immediately above the chamber 3. The anchor 5 has a pointed tip, and has a blade shape with a cross-sectional shape of a cross.
[0036]
The pneumatic cylinder device 6 has the following structure.
That is, when high pressure air is supplied to the upper cylinder chamber 9, the anchor is driven downward, and the anchor 5 enters between the steel balls 4 in the chamber 3 as indicated by the phantom line in FIG. 1. When the high pressure air is supplied to the lower cylinder chamber (lock release side cylinder) 10 in the lowering position (locking operation position), the anchor 5 is driven to rise, and the anchor 5 is moved as shown in FIG. As indicated by the solid line, the raised position (lock release position) is set out from between the steel balls 4 in the chamber 3. In other words, the pneumatic cylinder device 6 drives the anchor 5 to reciprocate between the raised position and the lowered position by selectively supplying high-pressure air to either the upper cylinder chamber 9 or the lower cylinder chamber 10. To do.
[0037]
The solenoid valve 12 connects the compressor 11 with the tank 11 a to the lower cylinder 10 when energized, and connects the compressor 11 with the tank 11 a to the upper cylinder chamber 9 when not energized.
[0038]
The energization control (switching operation) for the electromagnetic valve 12 is performed by the control device 14. The control device 14 is connected to a wind detection device 15 that detects the wind speed. The control device 14 detects that the wind detection device 15 detects a wind speed that is equal to or higher than a set value, that is, when there is a strong wind, the upper portion of the pneumatic cylinder device 6. Switching control of the solenoid valve 12 is performed so that high-pressure air is supplied to the cylinder chamber 9. On the other hand, when the wind detection device 15 does not detect a wind speed higher than the set value, the lower cylinder chamber 10 of the pneumatic cylinder device 6 is controlled. Switching control of the solenoid valve 12 is performed so that high-pressure air is supplied.
[0039]
In the first embodiment, as shown in FIG. 2, the wind detection device 15 transmits the ultrasonic waves 21 substantially upward or downward (upward in FIG. 2) by constantly transmitting or transmitting pulses. An ultrasonic transmitter 22 for transmitting, an ultrasonic receiver 23 for receiving the ultrasonic wave 21 from the ultrasonic transmitter 22, and a substantially vertical extension extending the ultrasonic transmitter 22 and the ultrasonic receiver 23 as required. A support mast 25 (support member) that supports the upper and lower sides with an interval 24 is provided. By adjusting the interval 24, a detectable wind speed is set. For example, when the frequency of the ultrasonic wave 21 is 40 kHz, the distance 24 between the ultrasonic transmitter 22 and the ultrasonic receiver 23 is set to about 34 cm in order to detect a wind speed of 20 m / s.
[0040]
The control device 14 includes an ultrasonic oscillation unit 26 that generates an ultrasonic wave 21 transmitted by the ultrasonic transmitter 22 and an ultrasonic amplification unit 28 that amplifies the signal 27 received by the ultrasonic receiver 23. Yes. The ultrasonic amplification unit 28 includes a waveform shaping unit 29 that shapes the waveform of the signal amplified by the ultrasonic amplification unit 28, and a comparison unit 30 that compares the signal shaped by the waveform shaping unit 29 with a threshold value. A switching unit 31 that outputs an ON / OFF binary signal 32 to the electromagnetic valve 12 based on the comparison result in the comparison unit 30 is connected.
[0041]
Next, the operation of the first embodiment will be described.
[0042]
During strong winds, high pressure air is supplied to the upper cylinder chamber 9 of the pneumatic cylinder device 6 by the switching operation of the electromagnetic valve 12 by the control device 14, and the anchor 5 is positioned at the lowered position. As a result, the anchor 5 enters between the steel balls 4 in the chamber 3 and enters a locked state in which the horizontal displacement of the upper structure 1 with respect to the foundation 2 is prohibited, and the upper structure 1 is prevented from swaying in a strong wind. In addition, a decrease in comfortability due to wind shaking is avoided. Moreover, since the locked state is obtained by the anchor 5 entering between the steel balls 4 in the chamber 3, a locked bear can be obtained without any hindrance to the residual displacement of the seismic isolation device after the occurrence of the earthquake.
[0043]
On the other hand, when there is no wind or light wind, high pressure air is supplied to the lower cylinder chamber 10 of the pneumatic cylinder device 6 by the switching operation of the electromagnetic valve 12 by the control device 14, and the anchor 5 is positioned at the raised position. As a result, the anchor 5 comes out of the space between the steel balls 4 in the chamber 3 and enters an unlocked state in which the horizontal displacement of the upper structure 1 relative to the foundation 2 is allowed. Thereby, when an earthquake occurs, the upper structure 1 is displaced in the horizontal direction with respect to the foundation 2 and a seismic isolation action is obtained.
[0044]
And the wind detection apparatus 15 and the control apparatus 14 detect a strong wind and a no wind or a weak wind as follows.
[0045]
First, in the wind detection device 15, the ultrasonic transmitter 22 transmits the ultrasonic wave 21 upward by constant transmission or pulse transmission, and is opposed to the ultrasonic transmitter 22 at a predetermined interval 24. The received ultrasonic receiver 23 functions to receive the ultrasonic wave 21 from the ultrasonic transmitter 22.
[0046]
In the control device 14, the ultrasonic wave 21 transmitted from the ultrasonic transmitter 22 is generated by the ultrasonic wave oscillating unit 26, and the signal 27 received by the ultrasonic wave receiver 23 is amplified by the ultrasonic wave amplifying unit 28. Then, the waveform shaping unit 29 shapes the waveform of the signal amplified by the ultrasonic amplification unit 28, the comparison unit 30 compares the signal shaped by the waveform shaping unit 29 with the threshold value, and the comparison unit 30 compares the signal. Based on the result, the switching unit 31 outputs an ON / OFF binary signal 32 to the solenoid valve 12.
[0047]
When there is no wind or light wind, the ultrasonic wave 21 oscillated upward is not affected by the wind, so that the ultrasonic wave 21 from the ultrasonic transmitter 22 is disturbed by the ultrasonic receiver 23 as shown by a broken line in FIG. Can be received without. Therefore, an ON signal is output from the control device 14 to the electromagnetic valve 12.
[0048]
On the other hand, when the wind is strong, the ultrasonic wave 21 is disturbed in the upward propagation and changes from the broken line state to the phantom line (wave line) state in FIG. 2, so that the ultrasonic receiver 23 cannot receive the ultrasonic wave 21. Therefore, an OFF signal is output from the control device 14 to the electromagnetic valve 12.
[0049]
As described above, it is possible to detect strong wind and no wind or weak wind. In particular, since the ultrasonic transmitter 22 and the ultrasonic receiver 23 are simply configured to face each other up and down, the wind detection device 15 can be made inexpensive. In addition, by adjusting and setting the interval 24 between the ultrasonic transmitter 22 and the ultrasonic receiver 23, it is possible to easily secure the necessary detection sensitivity. Further, by oscillating the ultrasonic wave 21 upward (or downward) to observe the disturbance of the propagation, the wind speed is detected only by the pair of ultrasonic transmitter 22 and ultrasonic receiver 23 regardless of the wind direction. be able to. Further, the hysteresis control may be performed by two threshold values for measuring the wind speed within a receivable range.
[0050]
Second Embodiment of the Invention
FIG. 3 shows a second embodiment of the present invention. The same or equivalent parts as those in the first embodiment will be described with the same reference numerals.
[0051]
In the second embodiment, the pair of ultrasonic transmitters 22 and the ultrasonic receivers 23 are directed substantially upward or downward in substantially the same direction (in FIG. 3, they are downward but may be upwards). And the reflector 35 is disposed opposite to the transmission / reception direction (downward in this case) by the pair of ultrasonic transmitters 22 and 23 with a required interval 24 therebetween. The wind detector 15 is used in which the transmitted ultrasonic wave 21 is reflected by the reflector 35 and then received by the ultrasonic receiver 23.
[0052]
The pair of ultrasonic transmitters 22 and the ultrasonic receivers 23 are attached to substantially the same position in the vertical direction of the support mast 25, but they may be shifted in the vertical direction.
[0053]
Thus, by using the reflecting plate 35, the vertical dimension of the wind detection device 15 can be reduced. In addition, by reducing the length in the vertical direction in this way, devices that require waterproofing can be combined into one. That is, waterproof treatment can be performed by putting the ultrasonic transmitter 22 and the ultrasonic receiver 23 together in one container.
[0054]
About parts other than the above, it has the same structure as the said Embodiment 1, and can obtain the same effect | action and effect.
[0055]
Embodiment 3 of the Invention
FIG. 4 shows a third embodiment of the present invention. The same or equivalent parts as those in the first embodiment will be described with the same reference numerals.
[0056]
In the third embodiment, one pressure measuring unit 41 opened to the atmosphere and the front end is opened substantially upward or downward (upward in FIG. 4) so as to be substantially perpendicular to the airflow. An upright or inverted pitot tube 43 is used as a detection tube, and the difference between the pressure of the other pressure measurement unit 42 attached to the pitot tube 43 and the pressure of one pressure measurement unit 41 and the pressure of the other pressure measurement unit 42 is calculated. The wind detector 15 provided with the differential pressure sensor 44 to detect is used.
[0057]
In the third embodiment, one pressure measurement unit 41 of the wind detection device 15 detects the atmospheric pressure, and the negative pressure due to the wind current inside the Pitot tube 43 is reduced by the wind flowing in front of the opening of the Pitot tube 43. Is detected by the other pressure measuring unit 42, and the differential pressure sensor 44 calculates the differential pressure (fine differential pressure) between them. Then, the control device 14 compares the signal 45 obtained by the wind detection device 15 with a preset threshold value, thereby detecting strong wind, no wind or weak wind, and an ON / OFF binary signal 32. Is output to the solenoid valve 12.
[0058]
As described above, it is possible to detect strong wind and no wind or weak wind. In particular, since the pressure measuring unit 41 opened to the atmosphere, the other pressure measuring unit 42 to which the pitot tube 43 is attached, and the differential pressure sensor 44 are simply configured, the wind detecting device 15 is made inexpensive. be able to. In addition, by adjusting and setting the length and thickness of the pitot tube 43, it is possible to easily secure the necessary detection sensitivity. Moreover, by setting it as the structure which opens the front-end | tip of the pitot tube 43 toward the upper direction or the downward direction, a wind speed is detectable irrespective of a wind direction.
[0059]
About parts other than the above, it has the same structure as the said Embodiment 1, and can obtain the same effect | action and effect.
[0060]
[Modification]
5 to 9 show a first modification of the third embodiment, in which a rectifying means 50 is attached to the tip of an upright or inverted pitot tube 43 of the other pressure measurement unit 42. The rectifying means 50 is constituted by two substantially parallel disks 51 and 52 (rectifying plates), and the Pitot tube 43 is arranged at a right angle to the approximate center of the disks 51 and 52. That is, the disks 51 and 52 are arranged substantially horizontally with respect to the ground. Then, the Pitot tube 43 is arranged so that the tip of the Pitot tube 43 is located at the approximate center between the two disks 51 and 52 (d1≈d2). In order to avoid the influence of the wind direction and turbulence caused by the roof 53, the rectifying means 50 is attached at a height of about 1 m from the top of the center of the plane of the seismic isolation building 1 as shown in FIGS.
[0061]
Then, the differential pressure sensor 44 is surrounded by the housing 54 so that one pressure measuring portion 42 is provided in the closed space so that the tip of the pitot tube 43 comes out of the housing 54.
[0062]
Thus, by attaching the rectifying means 50 to the tip of the other pressure measuring unit 42, it becomes possible to stably measure the wind speed. In particular, by arranging the disks 51 and 52 almost horizontally with respect to the ground, the wind speed can be stably measured even with respect to the winds 55 and 56 obliquely up and down. Can be measured. Further, by using the rectifying means 50 of the discs 51 and 52 type, non-directionality in the plane direction can be achieved.
[0063]
Further, by providing one pressure measuring unit 42 in a closed space such as the housing 54, it is possible to detect the atmospheric pressure at a position where it is closed and no wind is generated, so the accuracy of detecting atmospheric pressure is improved. Can be made.
[0064]
As described above, the wind detection device 15 with higher accuracy can be obtained by adding a simple configuration.
[0065]
At this time, when the distance between the disks 51 and 52 is increased, the characteristics on the plus angle side (characteristic against the wind 55 from below, so-called plus angle characteristics) are improved, and when the distance between the disks 51 and 52 is decreased, the opposite tendency is observed. It is done. Further, it has been found that the greater the effective length of the Pitot tube 43 (here, d2), the greater the differential pressure. Therefore, the characteristic change on the positive angle side is dominated by d2, and the characteristic change on the negative angle side (characteristic change with respect to the wind 56 from above, so-called negative angle characteristic) is from the upper end of the pitot tube 43 to one disk 51. The distance d1 is dominant. Accordingly, when the characteristic change was verified by fixing d1 = 15 mm and changing d2, results as shown in FIGS. 8 and 9 were obtained.
[0066]
According to this, the minus angle side characteristic is a good characteristic under any condition up to 30 °, and in particular, it is a flat characteristic at d2 = 30 mm. The positive angle side characteristics show good characteristics up to + 30 ° at d2 = 30mm and d2 = 35mm, but at angles larger than that, d2 = 30mm shows less deviation and d2 = 30mm as a whole shows excellent characteristics. ing. Therefore, d1 = 15 mm and d2 = 30 mm were optimally obtained by combining the minus angle side characteristics and the plus angle side characteristics.
[0067]
10 to 13 show a second modification of the third embodiment. In the case where two parallel disks 51 and 52 of the rectifying means 50 are supported by the support 60, the support 60 and the Pitot tube 43 are used. Is arranged with a required separation distance of 61 or more according to the outer diameter ratio between them.
[0068]
That is, as shown in FIG. 10, when the wind 62 is in a direction in which the support column 60 and the Pitot tube 43 are in a straight line, the differential pressure decreases and the measured wind speed becomes inaccurate. Both are arranged with a separation distance 61 of a distance or more.
[0069]
In order to obtain this required distance, the outer diameter of the Pitot tube 43 is set to 15 mm, three types of struts 60 having outer diameters of 3 mm, 4 mm, and 6 mm are prepared, and the wind speed is measured while changing the separation distance 61. The deviation between the obtained wind speed and the actual wind speed was obtained. The results are summarized in the table of FIG. 11, and a graph showing the separation distance characteristics as shown in FIG. 12 is obtained from the table of FIG. According to this graph, with respect to the Pitot tube 43 having an outer diameter of 15 mm, the separation distance 61 is 60 mm or more for the pillar 60 having the outer diameter of 3 mm, 120 mm or more for the pillar 60 having the outer diameter of 4 mm, and 140 mm or more for the pillar 60 having the outer diameter 6 mm. Then, it was confirmed that the occurrence of a decrease in differential pressure can be avoided. Therefore, it can be seen that the required distance may be 60 mm for the pillar 60 having an outer diameter of 3 mm and 120 mm or more for the pillar having an outer diameter of 4 mm.
[0070]
Further, as shown in FIG. 13, the above result is converted into an outer diameter ratio and plotted with the outer diameter ratio between the Pitot tube 43 and the column 60 as the horizontal axis and the separation distance 61 as the vertical axis, and these are connected by a curve. As a result, a limit curve is obtained. From this limit curve, the necessary separation distance 61 in other cases is calculated.
[0071]
Note that the structure in which the two parallel disks 51 and 52 are supported by the support columns 60 can be used upside down when intrusion of rainwater or the like is a concern.
[0072]
In this way, by appropriately setting the separation distance 61 between the support column 60 and the other pressure measuring unit 42, it is possible to avoid the occurrence of a differential pressure decrease and accurately measure the wind speed.
[0073]
Embodiment 4 of the Invention
14 and 15 show a fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part of the said Embodiment 1-3.
In the fourth embodiment, the wind detection device 15 includes one pressure measurement unit (not shown), the other pressure measurement unit 42, the outer detection pipe 65, the rectifying means 50, and a differential pressure sensor (not shown). I have.
[0074]
The other pressure measurement unit 42 is a cylinder, the outer detection tube 65 is a cylinder covering the tip of the other pressure measurement unit 42, and the rectifying means 50 is two disks 51 and 52 that are substantially parallel.
Since one pressure measurement unit and the differential pressure sensor are substantially the same as those of the third embodiment, description of the one pressure measurement unit and the differential pressure sensor is omitted.
[0075]
One disk 52 of two substantially parallel disks 51 and 52 is directly attached to the outer peripheral surface of the other pressure measurement unit 42 (inner detection tube), and the other disk 51 is attached to the tip of the other pressure measurement unit 42. In addition, a cylindrical outer detection tube 65 having substantially the same central axis as that of the other pressure measurement unit 42 and having a diameter larger than that of the other pressure measurement unit 42 is attached to the other pressure measurement unit 42. Yes. That is, the outer detection tube 65 covers the outside of the other pressure measurement unit 42. In this case, the tip of the other pressure measuring unit 42 is open, but is closed by being attached to the other disk 51.
[0076]
A spacer 66 is interposed between the outer peripheral surface of the other pressure measuring unit 42 and the inner peripheral surface of the outer detection tube 65 so as to concentrically hold the both with a predetermined gap. Is attached to the other pressure measuring unit 42. The other pressure measurement unit 42 is provided with a vent 67 at a position slightly below the spacer 66, and the space between the outer detection tube 65 and the other pressure measurement unit 42 and the other pressure are provided. The internal section of the measurement unit 42 communicates with the negative pressure of the outer detection tube 65 and propagates to the other pressure measurement unit 42.
[0077]
Since it is configured in this manner, the negative pressure generated inside the outer detection tube 65 by the wind passing between the two substantially parallel disks 51 and 52 and in front of the opening of the outer detection tube 65 is caused by ventilation. It acts on the other pressure measuring part 42 through the port 67. Therefore, the negative pressure in the outer detection tube 65 can be measured by measuring the atmospheric pressure of the other pressure measuring unit 42.
Thus, it is possible to detect the wind by measuring the difference in air pressure between the other pressure measurement unit 42 and one pressure measurement unit (not shown) with a differential pressure sensor (not shown).
When this structure is compared with the third embodiment, the outer detection tube 65 corresponds to the Pitot tube of the third embodiment.
[0078]
In the fourth embodiment, the other disk 51 is directly attached to the other pressure measurement unit 42, and the outer detection tube 65 is attached to the outside of the other pressure measurement unit 42. The disc 51 may be directly attached to the cylindrical outer detection tube 65, and the other pressure measurement unit 42 may be attached to the outer detection tube 65. Further, the other disk 51 may be attached to both the outer detection tube 65 and the other pressure measuring unit 42.
[0079]
As described above, by supporting the two disks 51 and 52 of the rectifying means without providing the support column 60, it is possible to avoid the occurrence of a decrease in differential pressure and accurately measure the wind speed.
Further, the support 60 can be omitted and the plane directivity can be made non-directional.
Furthermore, since it has a structure that does not allow rainwater or the like to enter, there is no need to use it upside down in a complicated structure.
[0080]
[Comparative example]
16 to 20 show a first modification of the fourth embodiment. In the fourth embodiment, the diameters of the two disks 51 and 52, the length of the outer detection tube 65, and the outer detection tube 65 from the disk 52 are shown. Is optimized so that the vertical angle characteristic (minus angle characteristic and plus angle characteristic) is minimized.
[0081]
In order to obtain this optimum value, the diameter of the other pressure measuring unit 42 is 5 mm, the wall thickness is 0.5 mm, the diameter of the outer detection tube 65 is 10 mm, the wall thickness is 1 mm, and the diameter of the vent hole 67 is 1. Set to ~ 3 mm. The distance P1 from the disk 52 to the outer detection tube 65 and the length P2 of the outer detection tube 65 are fixed at P1 = 15 mm and P2 = 30 mm, respectively, and the diameter D1 = 48 mm of the disk 52 and the diameter D2 of the disk 51. = 60 mm, disk 52 diameter D1 = 48 mm, disk 51 diameter D2 = 48 mm, disk 52 diameter D1 = 60 mm, disk 51 diameter D2 = 60 mm . The results are summarized in the table of FIG. 17. From this table, it was confirmed that the vertical angle characteristic is the smallest when the diameter D1 of the disk 52 is 48 mm and the diameter D2 of the disk 51 is 60 mm.
[0082]
Similarly, the diameter D1 of the disc 52 is fixed to 48 mm and the diameter D2 of the disc 51 is fixed to 60 mm, the distance P1 from the disc 52 to the outer detection tube 65 is 10 mm, and the length P2 of the outer detection tube 65 is 30 mm. Three cases of distance P1 = 15 mm to the outer detection tube 65 and length P2 = 30 mm of the outer detection tube 65, distance P1 = 20 mm from the disk 52 to the outer detection tube 65, and length P2 = 30 mm of the outer detection tube 65 An experiment was conducted to investigate the change in vertical angle characteristics. FIG. 18 is a table summarizing the results. From this table, when the distance P1 from the disk 52 to the outer detection tube 65 is 10 mm and the length P2 of the outer detection tube 65 is 30 mm, the vertical angle characteristics are as follows. It was confirmed to be the smallest.
[0083]
Although the diameter D1 of the disc 52 is 48 mm and the diameter D2 of the disc 51 is 60 m, the distance P1 from the disc 52 to the outer detection tube 65 is 10 mm and the length P2 of the outer detection tube 65 is 30 mm, the directivity is confirmed. As a result, the results shown in the table of FIG. 19 were obtained, and it was confirmed that there was no problem in directivity.
[0084]
Finally, although the diameter D1 of the disc 52 is 48 mm, the diameter D2 of the disc 51 is 60 m, the distance P1 from the disc 52 to the vent 67 is 10 mm, and the length P2 of the outer detection tube 65 is 30 mm, the wind speed characteristics are as follows. As a result of the examination, the results shown in the table of FIG. 20 were obtained, and it was confirmed that the wind speed could be measured stably even for the winds 55 and 56 from above and below the expected range.
[0085]
About parts other than the above, it has the same structure as the said Embodiment 3, and can obtain the same effect | action and effect.
[0086]
FIGS. 21-24 is the 2nd modification of Embodiment 4, and the wind detection apparatus 15 has one pressure measurement part which is not shown in figure, the other pressure measurement part 42, the outer side detection tube 65, Rectifying means 50, a differential pressure sensor 44, and a housing 54 are provided.
The tip of the other pressure measuring unit 42 is closed.
[0087]
Then, one disk 52 of two substantially parallel disks 51 and 52 is directly attached to the outer peripheral surface of the other pressure measurement unit 42 (inner detection tube), and the other disk 51 is connected to the other pressure measurement unit 42. It is attached to both the tip and the tip of a cylindrical outer detection tube 65 that has substantially the same central axis as the other pressure measurement unit 42 and has a diameter larger than that of the other pressure measurement unit 42.
[0088]
In addition, a spacer 66 is interposed between the outer peripheral surface of the other pressure measuring unit 42 and the inner peripheral surface of the outer detection tube 65 so as to hold both in a concentric manner with a predetermined gap. The other pressure measurement unit 42 is provided with a vent 67 at a position below the spacer 66, and a space between the outer detection tube 65 and the other pressure measurement unit 42 and the other pressure measurement unit 42. The negative pressure of the outer detection tube 65 is propagated to the other pressure measuring unit 42.
[0089]
Since it is configured in this manner, the negative pressure generated inside the outer detection tube 65 by the wind passing between the two substantially parallel disks 51 and 52 and in front of the opening of the outer detection tube 65 is caused by ventilation. It acts on the other pressure measuring part 42 through the port 67. Therefore, the atmospheric pressure in the outer detection tube 65 can be measured by measuring the atmospheric pressure of the other pressure measuring unit 42.
Accordingly, the difference between the pressure of the other pressure measurement unit 42 and the pressure of one pressure measurement unit (not shown) that measures the pressure inside the housing 54 is measured by the differential pressure sensor 44 provided in the housing 54. The wind speed can be measured.
[0090]
The browsing 54 is composed of the other disk 51, a vinyl chloride pipe 57 attached to the other disk 51, and a lid 58 attached to the lower side of the vinyl chloride pipe 57. A space is formed.
A differential pressure sensor 44 and one pressure measuring unit (not shown) for measuring the atmospheric pressure in the enclosed space are provided inside the browsing 54.
The differential pressure sensor 44 and the other pressure measurement unit 42 are connected by a connection tube 59, and the differential pressure sensor 44 can measure the differential pressure between the other pressure measurement unit 42 and the one pressure measurement unit. It can be done. This measurement result is sent to the control device via the electric wire 70.
[0091]
Specifically, the diameter of the other disk 52 is 48 mm, and the diameter of one disk 51 is 60 mm, which is about 1.25 times the diameter of the other disk 52 where the vertical angle characteristic of the detection deviation is the flattest. did.
The outer diameter of the vinyl chloride tube 57 used for the housing 54 is 48 mm so that the other disk 52 is the upper plate, the inner diameter is 40 mm (nominal), and the length is turbulent flow due to the housing 54. In order to suppress the influence of the above, 80 mm or more is necessary, so 100 mm is set.
[0092]
Further, the diameter of the other pressure measuring part 42 is set to 5 mm, which is substantially the same as the connecting part of the differential pressure sensor 44, and the length thereof is 20 mm in order to connect the connecting part of the differential pressure sensor 44 with the connecting tube 59. Further, the vent 67 is provided at a position 10 mm higher than the opening of the other pressure measuring unit 42 (a position 10 mm lower from the tip) in order to suppress the influence of wind blowing from below. In consideration of clogging with dust, vent holes 67 having a diameter of 1.5 mm are provided at two locations.
In addition, the outer detection tube 65 has an outer diameter of 10 mm and a wall thickness of 1.0 mm so that the gap with the other pressure measurement unit 42 is 1.0 mm or more.
[0093]
Further, the length P2 of the outer detection tube and the distance P1 from the tip of the outer detection tube 65 to the other disk 51 were set to P2 = 20 mm and P1 = 15 mm from the experimental evaluation.
As a result of measuring the vertical angle characteristics of the wind detector 15, the chart shown in FIG. 23 was obtained.
As can be seen from this chart, the vertical angle characteristic of the wind detection device 15 is in the range of −40 ° to + 30 °, and the deviation is ± 10% to ± 30 °, which can be sufficiently put into practical use.
[0094]
In order to install the wind detection device 15, as shown in FIG. 24, a support mast 25 is set up on a building and fixed to the support mast 25 using a pipe band 71.
In order to reduce the influence of the support mast 25, the other disk 52 is fixed at a position 50 mm or more higher than the upper end of the support mast 25.
[0095]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change or the like without departing from the gist of the present invention. included.
For example, the rectifier of the third embodiment may be provided between the ultrasonic transmitter and the ultrasonic receiver according to the first and second embodiments.
[0103]
【The invention's effect】
As explained above,Claim1According to the invention of the wind detection apparatus, one of the two disks is attached to the outer peripheral surface of the cylinder of the other pressure measuring unit, and the other diskThe otherThe two discs of the rectifying means are attached to the other pressure measuring unit (or the other measuring unit) without providing a support column, such as being attached to the tip of either the pressure measuring unit or the outer detection tube.PressureBy supporting the force measuring unit and the outer detection tube), it is possible to avoid the occurrence of a differential pressure decrease due to the support column. In addition, the space between the outer detection tube and the other pressure measurement unit and the space inside the other pressure measurement unit are communicated with each other, so that the outer detection tube passes between the two substantially closed disks. The negative pressure of the outer detector tube due to the wind current flowing in front of the opening can be obtained by measuring the pressure inside the cylinder of the other pressure measuring unit.
[0104]
  Claim2According to the invention of the wind detecting device, the upper plate of the housing constituting the closed space is made into one disk, so that the rectifying means and the housing are integrated, and one pressure measuring device and the other pressure measuring device. Since the wind detection device provided with the outer top tube, the rectifying means, and the differential pressure sensor can be made into a compact shape, and thus can be made into a compact shape, the wind detection device is Easy to transport and install.
[0105]
  Claim3According to the invention of the wind detection apparatus of the present invention, by optimizing the diameter size and interval of the two disks so that the vertical angle characteristic is minimized, it is possible to stabilize the wind from above and below the expected range. Wind speed can be measured.
[0106]
  Claim4According to the invention of the seismic isolation building of claim 1 to claim 17By installing the wind detector in the lock device, it is not shaken by strong winds, avoiding deterioration of habitability due to wind shakes, and shifting only in the event of an earthquake to the horizontal direction and not following the shaking of the ground It can be made into a building, and can exhibit a practically beneficial effect.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a first embodiment of the present invention.
FIG. 2 is an enlarged configuration diagram of the wind detection device portion of FIG. 1;
FIG. 3 is an enlarged configuration diagram of a wind detection device portion according to a second embodiment of the present invention.
FIG. 4 is an enlarged configuration diagram of a wind detection device portion according to a third embodiment of the present invention.
FIG. 5 is an enlarged configuration diagram of a first modification of the third embodiment.
6 is a side view of the base-isolated building using FIG. 5. FIG.
FIG. 7 is another side view of the base-isolated building using FIG.
FIG. 8 is a table showing characteristic data of rectifying means.
FIG. 9 is a graph showing characteristic data of the rectifying means.
10 is an explanatory diagram of a second modification of the third embodiment. FIG.
FIG. 11 is a table showing an experimental example for avoiding a decrease in differential pressure.
12 is a graph showing the separation distance characteristics in which FIG. 11 is summarized. FIG.
FIG. 13 is a graph showing a limit curve for avoiding a decrease in differential pressure.
FIG. 14 is an enlarged configuration diagram of a wind detection device portion according to a fourth embodiment of the present invention.
15 is an enlarged sectional view of part A in FIG.
FIG. 16 is an explanatory diagram of a first modification of the fourth embodiment.
FIG. 17 is a graph showing changes in vertical angle characteristics depending on the diameter of a disk.
FIG. 18 is a graph showing the change in the vertical angle characteristic depending on the position from the disk to the vent hole.
FIG. 19 is a graph showing a state of directivity confirmation after optimization.
FIG. 20 is a graph showing wind speed characteristics after optimization.
FIG. 21 is an explanatory diagram of a second modification of the fourth embodiment.
22 is an enlarged sectional view of part B of FIG. 21. FIG.
FIG. 23 is a graph showing changes in vertical angle characteristics.
FIG. 24 is a front view showing a usage state of the wind detection device.
[Explanation of symbols]
1 Superstructure of base-isolated building
15 Wind detector
16 Locking device
21 Ultrasound
22 Ultrasonic transmitter
23 Ultrasonic receiver
24 intervals
25 Support mast
35 Reflector
41 Pressure measurement unit
42 Pressure measurement unit
43 Pitot tube
44 Differential pressure sensor
50 Rectifying means
51 One disk
52 The other disk
54 Housing
60 props
61 Isolation distance
65 Outside detector tube
67 Vent

Claims (4)

  One pressure measurement unit, the other pressure measurement unit, an outer detection tube, a rectification means, a differential pressure sensor, a wind detection device, wherein the other pressure measurement unit is a cylindrical body, The outer detection tube is a cylindrical body that covers the tip of the other pressure measuring unit, and the rectifying means is composed of two substantially parallel disks, and one of the two disks is connected to the other pressure measuring unit. Attached to the outer peripheral surface of the cylindrical body, the other disk is attached to the tip of one of the other pressure measuring unit and the outer detection tube, the space between the outer detection tube and the other pressure measuring unit, and the other A wind detection device characterized in that it communicates with the internal space of the pressure measuring section. The one disk is provided with a housing constituting a closed space having the one disk as an upper plate, and one pressure measuring unit and a differential pressure sensor are provided inside the housing. The wind detection device according to claim 1 . Wherein the diameter and spacing of the two discs, the wind detecting apparatus according to claim 1 or claim 2, wherein the vertical angle characteristics are optimized so as to minimize. A base-isolated building comprising the wind detection device according to any one of claims 1 to 3 in a lock device.

Images