JPH102788A - Seismoscope - Google Patents
SeismoscopeInfo
- Publication number
- JPH102788A JPH102788A JP15440996A JP15440996A JPH102788A JP H102788 A JPH102788 A JP H102788A JP 15440996 A JP15440996 A JP 15440996A JP 15440996 A JP15440996 A JP 15440996A JP H102788 A JPH102788 A JP H102788A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- yoke
- pendulum
- coil
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地震による振動を
感知する感震装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic device for detecting vibration caused by an earthquake.
【０００２】[0002]
【従来の技術】従来より、地震発生後の二次災害を防止
するために、地震の振動を感知する感震装置を用いて、
地震が発生するとガス流路を遮断する家庭用ガスメータ
がある。この感震装置としては、例えば、実開昭６１−
４８６３４号公報に示されるように、地震の振動によっ
て転動した球がプランジャを押し上げることによって、
接点が開閉されるスイッチ機構を備えたものがあった。2. Description of the Related Art Conventionally, in order to prevent a secondary disaster after an earthquake, a seismic sensing device that senses earthquake vibration has been used.
There are household gas meters that shut off the gas flow path when an earthquake occurs. As this seismic device, for example,
As disclosed in Japanese Patent No. 48634, a ball rolled by the vibration of an earthquake pushes up a plunger,
Some devices have a switch mechanism that opens and closes contacts.
【０００３】また、特開平５−７９８９６号公報に示さ
れるように圧電フィルムを用いたものもあり、振動によ
る圧電フィルムの変形によって発生する電圧から、地震
の振動を検出していた。Further, as disclosed in Japanese Patent Application Laid-Open No. 5-79896, there is a device using a piezoelectric film, and the vibration of the earthquake is detected from the voltage generated by the deformation of the piezoelectric film due to the vibration.
【０００４】[0004]
【発明が解決しようとする課題】上記の感震装置の内、
前者のスイッチ機構を備えた感震装置の場合には、地震
の振動によって開閉されるスイッチ機構を有しているの
で、その接点で接触不良等の不具合が発生する可能性が
あり、信頼性が低いという問題点があった。また、後者
の圧電フィルムを用いた感震装置の場合には、その構造
は非常に簡単であるが、地震のような低周波振動を検出
するためには、大きな静電容量が必要となり、感震装置
が大型化するという問題点があった。また、地震の振動
によって圧電フィルムに発生する電圧は数百ｍＶ程度で
あり、例えば、この圧電フィルムの電圧信号をマイコン
の入力信号として用いるためには、アンプにより圧電フ
ィルムの電圧信号を増幅する必要がある。しかし、家庭
用ガスメータ等の用途では電池で長時間動作させるため
に消費電力の制約があり、アンプを使用できないという
問題点もあった。SUMMARY OF THE INVENTION Among the above seismic devices,
The former seismic device with a switch mechanism has a switch mechanism that opens and closes due to the vibration of the earthquake. There was a problem that it was low. Also, in the case of the latter seismic device using a piezoelectric film, its structure is very simple, but a large capacitance is required to detect low-frequency vibration such as an earthquake. There was a problem that the seismic device became large. The voltage generated on the piezoelectric film by the vibration of the earthquake is about several hundred mV. For example, in order to use the voltage signal of the piezoelectric film as the input signal of the microcomputer, it is necessary to amplify the voltage signal of the piezoelectric film by an amplifier. There is. However, there is also a problem that an amplifier cannot be used in applications such as a home gas meter because the battery is operated for a long time and power consumption is restricted.
【０００５】本発明は上記問題点に鑑みて為されたもの
であり、請求項１の発明の目的は、信頼性が高く、振動
の大きさに応じてマイコンの入力信号として使用できる
程度の電圧を出力する感震装置を提供することにある。
請求項２の発明の目的は、増速機構の動作をスムーズに
した感震装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a highly reliable voltage which can be used as an input signal of a microcomputer according to the magnitude of vibration. The object is to provide a seismic device that outputs a signal.
It is an object of the present invention to provide a seismic device in which the operation of the speed increasing mechanism is made smooth.
【０００６】請求項３の発明の目的は、永久磁石の回動
運動によって生じる磁束の変化を効率良く電圧に変換で
きる感震装置を提供することにある。請求項４の発明の
目的は、地震等による振動が発生していない状態での消
費電力を低減した感震装置を提供することにある。It is an object of the present invention to provide a seismic device capable of efficiently converting a change in magnetic flux caused by a rotating motion of a permanent magnet into a voltage. A fourth object of the present invention is to provide a seismic device in which power consumption is reduced in a state where vibration due to an earthquake or the like is not generated.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明では、上
記目的を達成するために、軸を中心に揺動する振り子
と、振り子の揺動運動に応じて回動する永久磁石と、磁
性材料からなり永久磁石と磁気回路を形成するヨーク
と、ヨークに巻回されたコイルとを備え、永久磁石の回
動運動に応じてコイルに電圧が発生する感震装置におい
て、振り子の揺動運動を増速して永久磁石に伝達する増
速機構を備えているので、振動によって発生した振り子
の揺動運動が増速機構によって増速され、永久磁石を非
常に早く回転させることができる。According to the first aspect of the present invention, to achieve the above object, a pendulum swinging about an axis, a permanent magnet rotating according to the swing motion of the pendulum, In a seismic device that includes a yoke made of a material and forms a magnetic circuit with a permanent magnet, and a coil wound on the yoke, and a voltage is generated in the coil in accordance with the rotation of the permanent magnet, the swinging motion of the pendulum Of the pendulum generated by the vibration is increased by the speed increasing mechanism, and the permanent magnet can be rotated very quickly.
【０００８】請求項２の発明では、請求項１の発明にお
いて、振り子と永久磁石とヨークとコイル及び増速機構
を筐体内に配設しているので、増速機構の動作を妨げる
摩擦力などの力が加わるのを防ぐことができる。請求項
３の発明では、請求項１の発明において、ヨークが同一
形状の２個のヨーク片からなり、両ヨーク片はその一端
で両ヨーク片間の接触部分が大きくなるように互いに磁
気結合されるとともに、その他端は永久磁石を取り囲む
ように形成され、両ヨーク片の他端間は所定の隙間を介
して互いに対向しているので、両ヨーク片の磁気結合部
での損失を低減できるとともに、他端側で発生する漏れ
磁束を低減することができる。According to a second aspect of the present invention, in the first aspect, the pendulum, the permanent magnet, the yoke, the coil, and the speed increasing mechanism are disposed in the housing. Can be prevented from being applied. According to a third aspect of the present invention, in the first aspect of the invention, the yoke comprises two yoke pieces having the same shape, and the two yoke pieces are magnetically coupled to each other at one end so that a contact portion between the two yoke pieces becomes large. At the same time, the other end is formed so as to surround the permanent magnet, and the other ends of the two yoke pieces are opposed to each other with a predetermined gap therebetween, so that the loss at the magnetic coupling portion of the two yoke pieces can be reduced. In addition, the leakage magnetic flux generated at the other end can be reduced.
【０００９】請求項４の発明では、請求項１の発明にお
いて、コイルの電圧信号を波形処理する振動波形処理部
と、振動波形処理部の出力信号をＡ／Ｄ変換するＡ／Ｄ
変換部と、コイルの電圧信号によって起動されて振動波
形処理部とＡ／Ｄ変換部の電源をオンするとともにＡ／
Ｄ変換部の出力信号に基づいて地震か否かを判断する演
算処理部とを備えているので、コイルに電圧信号が発生
していない場合、振動波形処理部やＡ／Ｄ変換部の電源
をオフにすることができる。According to a fourth aspect of the present invention, in the first aspect of the invention, a vibration waveform processing section for waveform-processing a voltage signal of the coil, and an A / D for A / D converting an output signal of the vibration waveform processing section.
The power source of the vibration waveform processing unit and the A / D conversion unit is activated by being activated by the voltage signal of the conversion unit and the coil.
Since there is provided an arithmetic processing unit for determining whether or not an earthquake has occurred based on the output signal of the D conversion unit, when no voltage signal is generated in the coil, the power supply of the vibration waveform processing unit and the A / D conversion unit is turned off. Can be turned off.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態を図面を参照
して説明する。本実施形態の感震装置の構造を図１
（ａ）乃至（ｃ）に示す。この感震装置は、軸１と、地
震等の振動によって軸１を中心として揺動する振り子２
と、振り子２と同軸に設けられた歯車３と、歯車３と噛
合し歯車３よりも歯数の少ない歯車４と、歯車４と同軸
に設けられ歯車４よりも歯数が多い歯車５と、歯車５と
噛合し歯車５よりも歯数の少ない歯車６と、所定の軸を
中心に分極され歯車６と同軸に設けられた円板状の永久
磁石７と、永久磁石７を取り囲むように配設され永久磁
石７と磁気回路を形成するヨーク８と、ヨーク８に巻回
されるコイル１０と、振り子２の揺動範囲を規制するス
トッパー１５，１５が形成された成形品１１と、軸１及
び歯車３〜６の回動軸をそれぞれ位置決めする２枚の地
板１２，１２と、２枚の地板１２，１２を所定の間隔を
設けて連結する４本のスペーサ１３とを備えている。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the structure of the seismic device of the present embodiment.
(A) to (c). This seismic device comprises a shaft 1 and a pendulum 2 which swings around the shaft 1 by vibrations such as an earthquake.
A gear 3 provided coaxially with the pendulum 2, a gear 4 meshing with the gear 3 and having a smaller number of teeth than the gear 3, a gear 5 provided coaxially with the gear 4 and having a larger number of teeth than the gear 4, A gear 6 meshing with the gear 5 and having a smaller number of teeth than the gear 5, a disk-shaped permanent magnet 7 polarized around a predetermined axis and provided coaxially with the gear 6, and arranged so as to surround the permanent magnet 7. A yoke 8 that is provided to form a magnetic circuit with the permanent magnet 7, a coil 10 wound around the yoke 8, a molded product 11 on which stoppers 15, 15 for regulating the swing range of the pendulum 2 are formed, and a shaft 1. And two ground plates 12, 12 for positioning the rotation axes of the gears 3 to 6, respectively, and four spacers 13, which connect the two ground plates 12, 12 at a predetermined interval.
【００１１】ここで、歯車３乃至６から増速機構１８は
構成され、各歯車間のギヤ比を所定の値に設定すること
によって、増速機構１８は振り子２の揺動運動を増速し
て永久磁石７に伝達している。また、成形品１１にはヨ
ーク８の位置決め部１４，１４が形成されており、ヨー
ク８は成形品１１の所定の位置に正確に配設される。図
２に示すように、ヨーク８は同一形状の２個のヨーク片
９，９から構成されており、両ヨーク片９，９は略コ字
状に形成されている。両ヨーク片９，９の一端には両ヨ
ーク片９，９間の接触部分を大きくするために段付き部
９ａ，９ａが形成され、その他端には永久磁石７を取り
囲むように凹曲面９ｂ，９ｂが形成されている。ここ
で、段付き部９ａ，９ａを重ね合わせた状態で両ヨーク
片９，９を接合することにより、両ヨーク片９，９の接
触部分が大きくなり、両ヨーク片９，９の磁気結合部で
の磁束の損失を低減することができる。また、両ヨーク
片９，９の他端は永久磁石７を取り囲むように配設さ
れ、両ヨーク片９，９は所定の隙間１６を介して対向す
るので、磁気ギャップを設けることにより、コイル１０
を通らずに両ヨーク片９，９間に流れる漏れ磁束を低減
することができる。したがって、コイル１０は、永久磁
石７の回動運動によって生じる磁束の変化を効率良く電
圧に変換することができる。Here, the speed increasing mechanism 18 is constituted by the gears 3 to 6, and by setting the gear ratio between the respective gears to a predetermined value, the speed increasing mechanism 18 speeds up the swinging motion of the pendulum 2. To the permanent magnet 7. Further, the molded product 11 is formed with positioning portions 14 for the yoke 8, and the yoke 8 is accurately arranged at a predetermined position on the molded product 11. As shown in FIG. 2, the yoke 8 is composed of two yoke pieces 9, 9 of the same shape, and both yoke pieces 9, 9 are formed in a substantially U-shape. Steps 9a, 9a are formed at one end of the two yoke pieces 9, 9 to increase the contact portion between the two yoke pieces 9, 9, and concave ends 9b, 9b, 9 9b is formed. Here, by joining the two yoke pieces 9, 9 in a state where the stepped portions 9a, 9a are overlapped, the contact portion between the two yoke pieces 9, 9 becomes large, and the magnetic coupling portion of the two yoke pieces 9, 9 is formed. Magnetic flux loss can be reduced. The other ends of the two yoke pieces 9, 9 are arranged to surround the permanent magnet 7, and the two yoke pieces 9, 9 are opposed to each other with a predetermined gap 16 therebetween.
Leakage magnetic flux flowing between the two yoke pieces 9 without passing through can be reduced. Therefore, the coil 10 can efficiently convert a change in magnetic flux caused by the rotational movement of the permanent magnet 7 into a voltage.
【００１２】一方、２枚の地板１２と４本のスペーサ１
３とから筐体１７は構成され、筐体１７内に軸１と振り
子２と歯車３〜６と永久磁石７とヨーク８とコイル１０
及び成形品１１とが配設されているので、増速機構１８
の動作を妨げる摩擦力などの力が加わるのを防ぐことが
でき、増速機構１８の動作をスムーズにすることができ
る。On the other hand, two ground plates 12 and four spacers 1
3 form a shaft 17, a pendulum 2, gears 3 to 6, a permanent magnet 7, a yoke 8, and a coil 10.
And the molded product 11, the speed increasing mechanism 18
Therefore, it is possible to prevent the application of a force such as a frictional force that hinders the operation of the speed increasing mechanism 18 and to smoothly operate the speed increasing mechanism 18.
【００１３】ここで、地震が発生すると、地震の振動に
よって振り子２は軸１を中心として揺動する。振り子２
が揺動すると、振り子２と同軸に設けられた歯車３が回
動する。歯車３には歯車４が噛合されており、歯車３の
歯数に対して歯車４の歯数は少ないので、歯車４の回動
運動は増速される。さらに、歯車４と同軸に設けられた
歯車５は、歯車５よりも歯数の少ない歯車６と噛合して
いるので、歯車６の回動運動はさらに増速され、歯車６
と同軸に設けられた永久磁石７に回動運動が伝達され
る。永久磁石７が高速で回動することにより、ヨーク８
に流れる永久磁石７の磁束が急速に変化して、コイル１
０に電圧が発生する。このように、振り子２の揺動運動
は増速機構１８によって増速されて永久磁石７に伝達さ
れるので、コイル１０にマイコンの入力信号として使用
できる程度の電圧（例えば、５Ｖ／Ｇ）を発生させるこ
とができる。したがって、コイル１０に発生する電圧を
アンプ等を用いて増幅する必要がないので、消費電力の
大きいアンプが不要になり、感震装置の消費電力を低減
することができる。Here, when an earthquake occurs, the pendulum 2 swings about the shaft 1 by the vibration of the earthquake. Pendulum 2
Swings, the gear 3 provided coaxially with the pendulum 2 rotates. The gear 4 is meshed with the gear 4, and the number of teeth of the gear 4 is smaller than the number of teeth of the gear 3, so that the rotational movement of the gear 4 is increased. Further, since the gear 5 provided coaxially with the gear 4 is meshed with the gear 6 having a smaller number of teeth than the gear 5, the rotational movement of the gear 6 is further increased, and the gear 6
The rotational motion is transmitted to a permanent magnet 7 provided coaxially with the motor. When the permanent magnet 7 rotates at a high speed, the yoke 8
The magnetic flux of the permanent magnet 7 flowing through the
A voltage is generated at zero. As described above, the swinging motion of the pendulum 2 is accelerated by the speed increasing mechanism 18 and transmitted to the permanent magnet 7, so that a voltage (for example, 5 V / G) that can be used as an input signal of the microcomputer is applied to the coil 10. Can be generated. Therefore, since it is not necessary to amplify the voltage generated in the coil 10 using an amplifier or the like, an amplifier having large power consumption is not required, and the power consumption of the seismic device can be reduced.
【００１４】本実施形態の感震装置の回路構成を図３に
示す。この感震装置は、振り子２の揺動によって発生し
たコイル１０の電圧信号を整流する整流回路２０及び整
流回路２０の整流信号を平滑化する平滑回路２１からな
る起動回路２２と、コイル１０に発生した電圧信号を波
形処理する振動波形処理部たる振動波形処理回路２３
と、振動波形処理回路２３の出力信号をＡ／Ｄ変換する
Ａ／Ｄ変換部たるＡ／Ｄ変換器２４と、Ａ／Ｄ変換器２
４の出力信号に基づいて地震か否かを判断する演算制御
部たるマイコン２５と、マイコン２５が地震と判断した
場合にガス流路を遮断する緊急処理を行う緊急処理回路
２６とから構成される。FIG. 3 shows a circuit configuration of the seismic device of this embodiment. The seismic device includes a rectifier circuit 20 for rectifying a voltage signal of the coil 10 generated by the swing of the pendulum 2, a starter circuit 22 including a smoothing circuit 21 for smoothing the rectified signal of the rectifier circuit 20, and a starter circuit 22 for the coil 10. Vibration waveform processing circuit 23, which is a vibration waveform processing unit that performs waveform processing on the converted voltage signal
An A / D converter 24 as an A / D converter for A / D converting an output signal of the vibration waveform processing circuit 23; and an A / D converter 2
The microcomputer 25 is an arithmetic control unit that determines whether or not an earthquake occurs based on the output signal of the microcomputer 4, and an emergency processing circuit 26 that performs an emergency process of shutting off a gas flow path when the microcomputer 25 determines that an earthquake has occurred. .
【００１５】通常時（地震等による振動が発生していな
い場合）、マイコン２５はスリープ状態にあり、振動波
形処理回路２３及びＡ／Ｄ変換器２４の電源はオフとな
っている。地震の振動によって振動の大きさに応じてコ
イル１０に電圧が発生すると、コイル１０の電圧信号を
整流回路２０が整流した後、平滑回路２１が平滑化し
て、平滑回路２１からスリープ状態にあるマイコン２５
にトリガ信号が入力される。マイコン２５は平滑回路２
１からのトリガ信号によって起動されると、振動波形処
理回路２３及びＡ／Ｄ変換器２４の電源を投入する。こ
の時、振動波形処理回路２３はコイル１０の電圧信号を
波形処理し、Ａ／Ｄ変換器２４は振動波形処理回路２３
の出力信号をＡ／Ｄ変換してマイコン２５に出力する。
マイコン２５はＡ／Ｄ変換器２４から入力された信号を
解析して地震か否かを判断し、マイコン２５が地震の発
生と判断した場合、緊急処理回路２６を用いてガス流路
を遮断する緊急処理を行っている。Normally (when vibrations due to an earthquake or the like do not occur), the microcomputer 25 is in a sleep state, and the power of the vibration waveform processing circuit 23 and the A / D converter 24 is off. When a voltage is generated in the coil 10 in accordance with the magnitude of the vibration due to the vibration of the earthquake, the voltage signal of the coil 10 is rectified by the rectifying circuit 20 and then the smoothing circuit 21 is smoothed. 25
Is input with a trigger signal. The microcomputer 25 is a smoothing circuit 2
When activated by the trigger signal from 1, the power of the vibration waveform processing circuit 23 and the A / D converter 24 is turned on. At this time, the vibration waveform processing circuit 23 performs waveform processing on the voltage signal of the coil 10, and the A / D converter 24 outputs the vibration waveform processing circuit 23
Is A / D converted and output to the microcomputer 25.
The microcomputer 25 analyzes the signal input from the A / D converter 24 to determine whether or not an earthquake has occurred. If the microcomputer 25 determines that an earthquake has occurred, the microcomputer 25 shuts off the gas flow path using the emergency processing circuit 26. Emergency processing is in progress.
【００１６】上述のように、通常時、消費電力の大きい
振動波形処理回路２３及びＡ／Ｄ変換器２４の電源はオ
フされており、マイコン２５はスリープ状態にある。ま
た、整流回路２０及び平滑回路２１は特に電源を必要と
していないので、その消費電力は殆ど無い。したがっ
て、通常時に感震装置が消費する電力を低減でき、この
感震装置を用いる家庭用ガスメータの電池の消耗を抑え
ることができる。As described above, the power of the vibration waveform processing circuit 23 and the A / D converter 24, which consume a large amount of power, is normally turned off, and the microcomputer 25 is in a sleep state. Further, since the rectifier circuit 20 and the smoothing circuit 21 do not particularly require a power source, they consume almost no power. Therefore, it is possible to reduce the power consumed by the seismic device during normal times, and to suppress the consumption of the battery of the household gas meter using the seismic device.
【００１７】また、コイル１０の電圧信号波形をマイコ
ン２５を用いて解析し、地震か否かを判断しているの
で、地震の発生を正確に感知することができる。Further, since the voltage signal waveform of the coil 10 is analyzed using the microcomputer 25 to determine whether or not an earthquake has occurred, it is possible to accurately detect the occurrence of an earthquake.
【００１８】[0018]
【発明の効果】請求項１の発明は、上述のように、軸を
中心に揺動する振り子と、振り子の揺動運動に応じて回
動する永久磁石と、磁性材料からなり永久磁石と磁気回
路を形成するヨークと、ヨークに巻回されたコイルとを
備え、永久磁石の回動運動に応じてコイルに電圧が発生
する感震装置において、振り子の揺動運動を増速して永
久磁石に伝達する増速機構を備えており、振動によって
発生した振り子の揺動運動が増速機構によって増速さ
れ、永久磁石を非常に早く回転させることができるの
で、振り子の振動に応じて、コイルにマイコンの入力信
号として使用できる程度の大きな電圧を発生させること
ができるという効果がある。また、スイッチ機構を用い
ていないので、接点の接触不良が発生することがなく、
感震装置の信頼性を向上できるという効果がある。According to the first aspect of the present invention, as described above, a pendulum swinging about an axis, a permanent magnet rotating in accordance with the swinging motion of the pendulum, and a permanent magnet made of a magnetic material, A seismic device that includes a yoke that forms a circuit and a coil wound around the yoke, and generates a voltage in the coil in accordance with the rotational movement of the permanent magnet. The pendulum swinging motion generated by the vibration is increased by the speed increasing mechanism, and the permanent magnet can be rotated very quickly. This has the effect that a voltage large enough to be used as an input signal of the microcomputer can be generated. In addition, since no switch mechanism is used, no contact failure occurs,
There is an effect that the reliability of the seismic device can be improved.
【００１９】請求項２の発明は、振り子と永久磁石とヨ
ークとコイル及び増速機構を筐体内に配設しており、増
速機構の動作を妨げる摩擦力などの力が加わるのを防ぐ
ことができるので、増速機構の動作をスムーズにできる
という効果がある。請求項３の発明は、ヨークが同一形
状の２個のヨーク片からなり、両ヨーク片はその一端で
両ヨーク片間の接触部分が大きくなるように互いに磁気
結合されるとともに、その他端は永久磁石を取り囲むよ
うに形成され、両ヨーク片の他端間は所定の隙間を介し
て互いに対向しており、両ヨーク片の接触部分での損失
を低減できるとともに、他端側で発生する漏れ磁束を低
減することができるので、コイルが永久磁石の回動運動
によって生じる磁束の変化を効率良く電圧に変換できる
という効果がある。According to a second aspect of the present invention, the pendulum, the permanent magnet, the yoke, the coil, and the speed increasing mechanism are disposed in the housing to prevent the application of a force such as a frictional force that hinders the operation of the speed increasing mechanism. Therefore, there is an effect that the operation of the speed increasing mechanism can be made smooth. According to a third aspect of the present invention, the yoke is composed of two yoke pieces having the same shape, and the two yoke pieces are magnetically coupled to each other so that a contact portion between the two yoke pieces is large at one end, and the other end is permanent. The two yoke pieces are formed so as to surround the magnet, and the other ends of the two yoke pieces face each other with a predetermined gap therebetween, so that the loss at the contact portion between the two yoke pieces can be reduced, and the leakage magnetic flux generated at the other end side Therefore, there is an effect that a change in magnetic flux generated by the rotation of the permanent magnet by the coil can be efficiently converted into a voltage.
【００２０】請求項４の発明は、コイルの電圧信号を波
形処理する振動波形処理部と、振動波形処理部の出力信
号をＡ／Ｄ変換するＡ／Ｄ変換部と、コイルの電圧信号
によって起動されて振動波形処理部とＡ／Ｄ変換部の電
源をオンするとともにＡ／Ｄ変換部の出力信号に基づい
て地震か否かを判断する演算処理部とを備えており、コ
イルに電圧信号が発生していない場合、振動波形処理部
やＡ／Ｄ変換部の電源をオフにすることができるので、
通常時に感震装置が消費する電力を低減することができ
るという効果がある。また、演算処理部がＡ／Ｄ変換部
の出力信号に基づいて地震か否かを判定しているので、
正確に地震の発生を感知できるという効果もある。According to a fourth aspect of the present invention, there is provided a vibration waveform processing section for performing waveform processing on a voltage signal of a coil, an A / D conversion section for performing A / D conversion on an output signal of the vibration waveform processing section, and activation by the voltage signal of the coil. And an arithmetic processing unit for turning on the power supply of the vibration waveform processing unit and the A / D conversion unit and determining whether or not the earthquake occurs based on the output signal of the A / D conversion unit. If not, the power of the vibration waveform processing unit and A / D conversion unit can be turned off.
There is an effect that the power consumed by the seismic device during normal times can be reduced. Also, since the arithmetic processing unit determines whether or not the earthquake is based on the output signal of the A / D conversion unit,
There is also an effect that the occurrence of an earthquake can be accurately detected.
【図１】本実施形態の感震装置を示し、（ａ）はＸ−
Ｘ’断面図、（ｂ）は正面図、（ｃ）はＹ−Ｙ’断面図
である。FIG. 1 shows a seismic device according to the present embodiment.
FIG. 2 is a cross-sectional view taken along the line X ′, FIG. 2B is a front view, and FIG.
【図２】同上のヨークを示す外観斜視図である。FIG. 2 is an external perspective view showing the yoke according to the first embodiment.
【図３】同上の感震装置を示すブロック図である。FIG. 3 is a block diagram showing the above seismic device.
１ 軸 ２ 振り子 ３〜６ 歯車 ７ 永久磁石 ８ ヨーク １０ コイル １８ 増速機構 1 shaft 2 pendulum 3-6 gear 7 permanent magnet 8 yoke 10 coil 18 speed increasing mechanism
Claims (4)
の揺動運動に応じて回動する永久磁石と、磁性材料から
なり前記永久磁石と磁気回路を形成するヨークと、前記
ヨークに巻回されたコイルとを備え、前記永久磁石の回
動運動に応じて前記コイルに電圧が発生する感震装置に
おいて、前記振り子の揺動運動を増速して前記永久磁石
に伝達する増速機構を備えて成ることを特徴とする感震
装置。1. A pendulum swinging about an axis, a permanent magnet rotating according to the swinging motion of the pendulum, a yoke made of a magnetic material and forming a magnetic circuit with the permanent magnet, A seismic device comprising a wound coil, wherein a voltage is generated in the coil in accordance with the rotational movement of the permanent magnet, wherein the speed increasing the swinging motion of the pendulum and transmitting it to the permanent magnet A seismic device comprising a mechanism.
前記コイル及び前記増速機構を筐体内に配設して成るこ
とを特徴とする請求項１記載の感震装置。2. The seismic device according to claim 1, wherein the pendulum, the permanent magnet, the yoke, the coil, and the speed increasing mechanism are disposed in a housing.
らなり、前記両ヨーク片はその一端で前記両ヨーク片間
の接触部分が大きくなるように互いに磁気結合されると
ともに、その他端は前記永久磁石を取り囲むように形成
され、前記両ヨーク片の他端間は所定の隙間を介して互
いに対向して成ることを特徴とする請求項１記載の感震
装置。3. The yoke is composed of two yoke pieces having the same shape, and the two yoke pieces are magnetically coupled to each other so that a contact portion between the two yoke pieces is increased at one end, and the other end is formed at the other end. The seismic device according to claim 1, wherein the two yoke pieces are formed so as to surround the permanent magnet, and the other ends of the two yoke pieces face each other with a predetermined gap therebetween.
波形処理部と、前記振動波形処理部の出力信号をＡ／Ｄ
変換するＡ／Ｄ変換部と、前記コイルの電圧信号によっ
て起動されて前記振動波形処理部と前記Ａ／Ｄ変換部の
電源をオンするとともに前記Ａ／Ｄ変換部の出力信号に
基づいて地震か否かを判断する演算処理部とを備えて成
ることを特徴とする請求項１記載の感震装置。4. A vibration waveform processing section for waveform-processing a voltage signal of said coil, and an A / D converter for outputting an output signal of said vibration waveform processing section.
An A / D converter for conversion, and a power supply of the vibration waveform processing unit and the A / D converter, which are activated by a voltage signal of the coil, and turn on the power of the A / D converter, and perform an earthquake based on an output signal of the A / D converter. The seismic device according to claim 1, further comprising an arithmetic processing unit that determines whether or not the vibration is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15440996A JPH102788A (en) | 1996-06-14 | 1996-06-14 | Seismoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15440996A JPH102788A (en) | 1996-06-14 | 1996-06-14 | Seismoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH102788A true JPH102788A (en) | 1998-01-06 |
Family
ID=15583527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15440996A Withdrawn JPH102788A (en) | 1996-06-14 | 1996-06-14 | Seismoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH102788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279559A (en) * | 2011-01-18 | 2011-12-14 | 荣杰 | Earthquake early warning clock for families |
-
1996
- 1996-06-14 JP JP15440996A patent/JPH102788A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279559A (en) * | 2011-01-18 | 2011-12-14 | 荣杰 | Earthquake early warning clock for families |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030902 |