JP2002243531A - Seismoscope - Google Patents
SeismoscopeInfo
- Publication number
- JP2002243531A JP2002243531A JP2001044716A JP2001044716A JP2002243531A JP 2002243531 A JP2002243531 A JP 2002243531A JP 2001044716 A JP2001044716 A JP 2001044716A JP 2001044716 A JP2001044716 A JP 2001044716A JP 2002243531 A JP2002243531 A JP 2002243531A
- Authority
- JP
- Japan
- Prior art keywords
- time
- filter
- integrating
- vibration
- level
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガスメータなどに
設置されて地震の振動を検知する振動検出装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration detecting device which is installed in a gas meter or the like and detects an earthquake vibration.
【０００２】[0002]
【従来の技術】従来、この種の振動検出装置は、特開２
０００−２０６２６３号公報のようなものが知られてい
た。以下、その方法について図７を参照しながら説明す
る。2. Description of the Related Art Conventionally, this kind of vibration detecting device is disclosed in
The thing like the gazette of 000-206263 was known. Hereinafter, the method will be described with reference to FIG.
【０００３】図７に示すように、地震の振動に応じてア
ナログ信号を出力する加速度センサ１、２、３と、加速
度センサの駆動回路４、５、６と、ノイズ除去用フィル
タ７、８、９と、マイコン１０を備えた構成となってい
た。ここで、１１はリセットスイッチ、１２はＳＩ有無
スイッチ、１３は演算開始設定器、１４は基準設定器、
１５は充電器、１６は電源スイッチ、１７はフォトカプ
ラ、１８は表示器、１９は表示機駆動回路、２０は計測
リセットである。As shown in FIG. 7, acceleration sensors 1, 2, and 3 which output analog signals in response to earthquake vibrations, acceleration sensor driving circuits 4, 5, and 6, noise removal filters 7, 8, and so on. 9 and a microcomputer 10. Here, 11 is a reset switch, 12 is an SI presence / absence switch, 13 is an operation start setting device, 14 is a reference setting device,
Reference numeral 15 denotes a charger, 16 denotes a power switch, 17 denotes a photocoupler, 18 denotes a display, 19 denotes a display drive circuit, and 20 denotes a measurement reset.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記従
来の構成では、図３に示す震度算出手順に従って計測震
度を演算する方法で、マイコンによる演算処理によって
計測震度を検出していた。この方法では、フーリエ変換
など高速の演算処理が必要となり、消費電流を多く消耗
するので電池で長期間動作させることは困難であった。
そのため、充電器を用いて逐次充電しながら使用しなけ
ればならないという課題を有していた。本発明は、フィ
ルタ手段と時間積算手段、時間判定手段によって低消費
電力とし長期間動作可能な感震器を提供することを目的
とする。However, in the above-described conventional configuration, the measured seismic intensity is detected by the arithmetic processing by the microcomputer in a method of calculating the measured seismic intensity according to the seismic intensity calculating procedure shown in FIG. This method requires high-speed arithmetic processing such as Fourier transform, and consumes a large amount of current. Therefore, it has been difficult to operate the battery for a long time.
Therefore, there is a problem that the battery must be used while being sequentially charged using a charger. SUMMARY OF THE INVENTION It is an object of the present invention to provide a seismic sensor which can operate for a long time with low power consumption by a filter means, a time integrating means and a time determining means.
【０００５】[0005]
【課題を解決するための手段】前記従来の課題を解決す
るために、本発明の感震器は、地震動などを検出する振
動検出手段と、計測震度のフィルタ特性を実現するフィ
ルタ手段と、前記振動検出手段の出力信号を前記フィル
タ手段で濾過した信号が所定レベル以上になる時間を積
算する時間積算手段と、前記時間積算手段が積算する積
算時間が所定時間以上になるか否かを判定する時間判別
手段とを備えたものである。In order to solve the above-mentioned conventional problems, a seismic sensor according to the present invention comprises: a vibration detecting means for detecting a seismic motion; a filter means for realizing a filter characteristic of a measured seismic intensity; Time integrating means for integrating a time when a signal obtained by filtering the output signal of the vibration detecting means by the filter means is equal to or more than a predetermined level, and determining whether or not the integrated time integrated by the time integrating means is equal to or more than a predetermined time And a time discriminating means.
【０００６】これによって、フーリエ変換を用いること
なくフィルタ手段で気象庁の定める計測震度の検出が可
能となり、高速処理マイコンを使用することなく計測震
度が検出できるので低消費電力で動作させることができ
る。[0006] This makes it possible to detect the measured seismic intensity determined by the Japan Meteorological Agency by the filter means without using the Fourier transform, and the measured seismic intensity can be detected without using a high-speed processing microcomputer, thereby enabling operation with low power consumption.
【０００７】[0007]
【発明の実施の形態】請求項１に記載の発明は、地震動
などを検出する振動検出手段と、計測震度のフィルタ特
性を実現するフィルタ手段と、前記振動検出手段の出力
信号を前記フィルタ手段で濾過した信号が所定レベル以
上になる時間を積算する時間積算手段と、前記時間積算
手段が積算する積算時間が所定時間以上になるか否かを
判定する時間判別手段とを備えることにより、フーリエ
変換を用いることなくフィルタ手段で気象庁の定める計
測震度の検出が可能となり、時間を積算して判別する簡
便な方法で行えるので、高速処理マイコンを使用するこ
となく計測震度が検出できるので低消費電力で動作させ
ることができる。DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 is a vibration detecting means for detecting a seismic motion, a filter means for realizing a filter characteristic of a measured seismic intensity, and an output signal of the vibration detecting means is applied to the filter means. A time integrating means for integrating the time when the filtered signal becomes equal to or higher than a predetermined level; and a time discriminating means for determining whether the integrated time integrated by the time integrating means is equal to or longer than a predetermined time. It is possible to detect the seismic intensity determined by the Japan Meteorological Agency with a filter means without using, and it is possible to detect it by a simple method of integrating and discriminating the time, so that the measured seismic intensity can be detected without using a high-speed processing microcomputer, so low power consumption Can work.
【０００８】請求項２に記載の発明は、振動検出手段
は、圧電型の振動加速度検出手段を用いて３次元方向の
振動が検出可能なように配置した３次元振動検出手段か
らなる構成とすることにより、圧電型の振動加速度検出
手段を用いることで、振動子自身が発電するので増幅を
最小限に抑えることができ低消費電力とすることができ
る。According to a second aspect of the present invention, the vibration detecting means comprises a three-dimensional vibration detecting means arranged so as to detect three-dimensional vibrations using a piezoelectric vibration acceleration detecting means. Thus, by using the piezoelectric vibration acceleration detecting means, the vibrator itself generates power, so that amplification can be minimized and power consumption can be reduced.
【０００９】請求項３に記載の発明は、フィルタ手段
は、第１のカットオフ周波数を有するハイパスフィルタ
回路と、第２のカットオフ周波数を有するローパスフィ
ルタ回路とを、それぞれ少なくとも１段以上備えことに
より、各フィルタ回路を組み合わせることでフィルタを
実現し、フーリエ変換を用いることなくフィルタ手段で
気象庁の定める計測震度の検出が可能とすることができ
る。According to a third aspect of the present invention, the filter means includes at least one or more stages of a high-pass filter circuit having a first cut-off frequency and a low-pass filter circuit having a second cut-off frequency. Accordingly, a filter can be realized by combining the respective filter circuits, and the detection of the measured seismic intensity determined by the Japan Meteorological Agency can be performed by the filter means without using the Fourier transform.
【００１０】請求項４に記載の発明は、濾過した信号
が、複数個の所定レベルを超える時間をそれぞれ各所定
レベル毎に積算する時間積算手段を備えて複数段階の計
測震度を判別する時間判別手段を備えることにより、複
数個の判定レベルの個数と所定のレベルを限定すること
で、必要なときだけ動作して積算時間などを検出するの
で低消費電力とすることができる。According to a fourth aspect of the present invention, there is provided a time discriminating means for discriminating a plurality of levels of measured seismic intensity, comprising time integrating means for integrating, for each predetermined level, a time when a filtered signal exceeds a plurality of predetermined levels. By providing the means, by limiting the number of the plurality of determination levels and the predetermined level, the operation is performed only when necessary and the integrated time is detected, so that low power consumption can be achieved.
【００１１】請求項５に記載の発明は、濾過した信号が
所定レベルを超えるか否かを判定するレベル判定手段を
少なくとも１個以上備えることにより、レベル判定手段
で濾過信号を判別することで、低レベルの振動の有無を
マイコンが動作することなく判定できるので低消費電力
とすることができる。According to a fifth aspect of the present invention, there is provided at least one or more level determining means for determining whether or not the filtered signal exceeds a predetermined level. Since the presence / absence of low-level vibration can be determined without operation of the microcomputer, low power consumption can be achieved.
【００１２】請求項６に記載の発明は、少なくとも１個
以上のレベル判定手段の出力が変化したか否かを判定す
る出力判定手段を備えることで、３次元方向の振動のう
ち、１方向でも設定した低レベルの振動を検知すれば、
時間積算手段が動作することができ、地震を見逃すこと
がない検出を行うことができる。According to a sixth aspect of the present invention, there is provided an output determining means for determining whether or not an output of at least one or more level determining means has changed. If the set low level vibration is detected,
The time integrating means can operate, and detection can be performed without missing an earthquake.
【００１３】請求項７に記載の発明は、出力判定手段が
レベル判定手段の出力変化を検知した後、時間積算手段
と時間判別手段を動作させ、レベル判定手段後に、各手
段を動作させることで低消費電力とすることができる。According to a seventh aspect of the present invention, after the output determining means detects a change in the output of the level determining means, the time integrating means and the time determining means are operated, and the respective means are operated after the level determining means. Low power consumption can be achieved.
【００１４】請求項８に記載の発明は、振動検出手段と
フィルタ手段と時間積算手段と時間判別手段は、電池で
駆動され、電源を電池とすることで、電源工事が不要と
なり、電源のない屋外でも使用することができるととも
に、ライフラインの商用電源の供給が閉ざされた場合で
も使用することができる。According to the present invention, the vibration detecting means, the filter means, the time accumulating means and the time determining means are driven by a battery and the power source is a battery, so that no power supply work is required and there is no power source. It can be used outdoors, and can be used even when the supply of commercial power to the lifeline is shut off.
【００１５】[0015]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１は本発明の実施例１の感震器を示すブ
ロック図である。図１において、２１は３方向の振動加
速度を検出する振動検出手段としての圧電方式の振動セ
ンサ、２２は気象庁の定めた計測震度のフィルタ特性
（参考文献；官報第１８３１号気象庁告示第４号気象業
務法施行規則に関する告示）を擬似的に再現したフィル
タ手段としてのフィルタ回路と、２３は振動センサ１０
の出力信号の一部をフィルタ回路２２で濾過した信号を
検出するレベル判定手段、２４は出力判定手段、２５は
Ａ／Ｄ変換器、２６は３個のＡ／Ｄ変換器の出力信号を
ベクトル合成する合成手段、２７は合成された信号波形
が所定レベル以上のとき時間を積算する時間積算手段、
２８は、積算時間が所定時間以上か否かを判定する時間
判別手段、２９は時間判別手段によって判別された条件
によって計測震度を判別する地震判別手段、３０は出力
判定手段の信号を受けるトリガ入力、３１は以上の処理
を行うマイコン、３２はこれらの手段に電力を供給する
電池である。ここで、３３は振動センサの信号増幅用の
アンプ、３４は振動センサ１０とアンプ１４を一体にし
た振動センサ装置、３５は計測震度が異常の時、地震を
報知する報知手段である。そして、フィルタ回路２２
は、図２に示すようにハイパスフィルタ回路３６と、第
１のローパスフィルタ回路３７と、第２のローパスフィ
ルタ回路３８とから構成した。FIG. 1 is a block diagram showing a vibration sensor according to a first embodiment of the present invention. In FIG. 1, reference numeral 21 denotes a piezoelectric vibration sensor as vibration detecting means for detecting vibration accelerations in three directions, and reference numeral 22 denotes a filter characteristic of a measured seismic intensity determined by the Japan Meteorological Agency (reference document; 23) a filter circuit as a filter means that simulates the notification of the Business Law Enforcement Regulations);
Level determining means for detecting a signal obtained by filtering a part of the output signal from the filter circuit 22; 24, an output determining means; 25, an A / D converter; Synthesizing means for synthesizing 27, time integrating means for integrating time when the synthesized signal waveform is equal to or higher than a predetermined level;
28 is a time discriminating means for judging whether or not the accumulated time is equal to or longer than a predetermined time, 29 is an earthquake discriminating means for discriminating the measured seismic intensity according to the condition discriminated by the time discriminating means, and 30 is a trigger input for receiving a signal from the output discriminating means , 31 are microcomputers for performing the above processing, and 32 is a battery for supplying power to these means. Here, reference numeral 33 denotes an amplifier for amplifying the signal of the vibration sensor, reference numeral 34 denotes a vibration sensor device in which the vibration sensor 10 and the amplifier 14 are integrated, and reference numeral 35 denotes a notifying means for notifying an earthquake when the measured seismic intensity is abnormal. Then, the filter circuit 22
Is composed of a high-pass filter circuit 36, a first low-pass filter circuit 37, and a second low-pass filter circuit 38, as shown in FIG.
【００１７】次に動作、作用について図３から図６を用
いて説明する。計測震度は、図３に示すフローチャート
の手順によって求められる。まず、振動センサ２１によ
って検出された東西、南北、上下の３方向の振動加速度
信号に、周波数軸で所定の重み付けを行うフィルタ処理
を行う。そして、それぞれフィルタ処理された３方向の
成分をベクトル合成した信号から継続時間の考慮を行う
ため、０．３秒以上継続する加速度レベルを求め、所定
の式に代入して計測震度を求めるものである。ここで、
フーリエ変換を行うためには、通常信号処理プロセッサ
が用いられるが、電池で長期間動作させるために、フィ
ルタ処理をフィルタ回路で実現して、近似的に計測震度
を検出することとした。Next, the operation and operation will be described with reference to FIGS. The measured seismic intensity is obtained by the procedure of the flowchart shown in FIG. First, filter processing is performed to weight the vibration acceleration signals in three directions, east, west, north, south, and up and down, detected by the vibration sensor 21 on the frequency axis. Then, in order to consider the continuation time from the signal obtained by vector-combining the filtered three-directional components, an acceleration level that lasts 0.3 seconds or more is obtained and substituted into a predetermined formula to obtain the measured seismic intensity. is there. here,
Normally, a signal processor is used to perform the Fourier transform, but in order to operate the battery for a long time, the filter processing is realized by a filter circuit, and the measured seismic intensity is approximately detected.
【００１８】まず、振動センサの信号は、図４に示すよ
うな３つのフィルタ回路２２、すなわち、ハイパスフィ
ルタ、第１のローパスフィルタ、第２のローパスフィル
タを直列に接続してフィルタ回路により信号を濾過する
ことによって、図５に示されるような利得Ａをピークに
したバンドパスフィルタ特性の重み付けを行う。そし
て、フィルタ回路２２を通過した信号が、所定レベルか
否かを判別するレベル判別手段２３を各フィルタの出力
段に設けた。この３つのレベル判定手段２３のうち、少
なくともひとつ以上が所定レベルを超えたと判別したと
き、出力判定手段２４がマイコン３１にトリガ信号を出
力する。この信号を受けて、マイコン３１がフィルタ回
路透過後の３つの信号をＡ／Ｄ変換して入力し合成手段
２６によってベクトル合成の処理動作を行う。例えば、
所定レベルは、２５から１００cm/s 2の間の８０cm/s2で
設定する。このレベルを超えるまで、マイコン３１は動
作しなくて良いので、電池の消費電力を抑えることがで
きるのである。First, the signal of the vibration sensor is shown in FIG.
Three filter circuits 22, that is, a high-pass filter
Filter, first low-pass filter, second low-pass filter
Filters in series and filters the signal with a filter circuit.
As a result, the gain A as shown in FIG.
Weighting of the obtained band-pass filter characteristics. Soshi
Is the signal passing through the filter circuit 22 at a predetermined level?
The level discriminating means 23 for discriminating whether or not the output of each filter
It was provided in a column. Of the three level determination means 23,
At least one has determined that it has exceeded the specified level
Output trigger 24 outputs a trigger signal to the microcomputer 31.
Power. In response to this signal, the microcomputer 31
A / D-converts and inputs the three signals transmitted through the road and synthesizes them
26 performs the vector synthesis processing operation. For example,
Prescribed level is 25 to 100cm / s Two80cm / s duringTwoso
Set. Until this level is exceeded, the microcomputer 31 operates.
You do not need to make it, so you can reduce the power consumption of the battery.
You can.
【００１９】そして、このトリガ信号が入力された後、
マイコン３１は図６に示すような次の処理を行う。すな
わち、ベクトル合成した信号が所定レベル以上となる時
間を時間積算手段２７によって積算する。例えば、計測
震度Ｉ１＝５を検出するには、式Ｉ＝２・Ｌｏｇ（ａ
０）＋Ｋより、ａ０を逆算してａ０＝１０７cm/s2を求
め、所定レベルを１０７に設定する。そしてベクトル合
成した信号が所定レベル（例えば、１０７）以上の継続
時間が、０．３秒以上となるか否かを検出する時間判別
手段２８によって計測震度５を判別するのである。ここ
で、Ｋは、補正係数で０．９４を使用する。また、計測
震度Ｉ２＝６の場合も同様に、ａ１＝３３９cm/s2以上
の信号の時間を積算して０．３秒以上となるか否かを判
別することによって、計測震度６が判定でき、計測震度
５と６の２段階の計測震度判別が可能になるのである。After the trigger signal is input,
The microcomputer 31 performs the following processing as shown in FIG. That is, the time when the vector-combined signal is equal to or higher than the predetermined level is integrated by the time integrating means 27. For example, to detect the measured seismic intensity I1 = 5, the equation I = 2 · Log (a
0) From a + K, a0 is calculated backward to obtain a0 = 107 cm / s 2 , and the predetermined level is set to 107. Then, the measured seismic intensity 5 is determined by the time determining means 28 which detects whether or not the duration of the vector-combined signal is equal to or longer than a predetermined level (for example, 107) or longer than 0.3 seconds. Here, K uses a correction coefficient of 0.94. Similarly, in the case of the measured seismic intensity I2 = 6, the measured seismic intensity 6 can be determined by integrating the time of the signal of a1 = 339 cm / s 2 or more and determining whether or not it becomes 0.3 seconds or more. Thus, it is possible to determine the measured seismic intensity in two stages of the measured seismic intensity 5 and 6.
【００２０】計測震度５のときは、報知１の処理、例え
ば異常表示通報を行う。また、計測震度６以上のとき
は、報知２の処理、例えば報知音を鳴らす通報を行う。
このように、計測震度によって、処理を変えることがで
きるので、様々な場合に適用することができる効果があ
る。When the measured seismic intensity is 5, the processing of the notification 1 is performed, for example, an abnormality display notification. When the measured seismic intensity is 6 or more, the process of the notification 2 is performed, for example, a notification that sounds a notification sound is performed.
As described above, since the processing can be changed depending on the measured seismic intensity, there is an effect that it can be applied to various cases.
【００２１】このように、時間積算手段と時間判別手段
を用いて特定の計測震度に限定して計測震度を検出する
ことで、低消費電力で地震のレベルを複数段階に検出す
ることができる。また、フーリエ変換を用いることなく
フィルタ手段で気象庁の定める計測震度の検出が精度良
く可能となり、時間を積算して判別する簡便な方法で行
えるので、高速処理マイコンを使用することなく計測震
度が検出できるので低消費電力で動作させることができ
る。そして、圧電型の振動加速度検出手段を用いること
で、振動子自身が発電するので増幅を最小限に抑えるこ
とができ低消費電力とすることができる。そして、各フ
ィルタ回路を組み合わせることでフィルタを実現し、フ
ーリエ変換を用いることなくフィルタ手段で気象庁の定
める計測震度の検出が可能とすることができる。そし
て、複数個と所定のレベルに限定することで、必要なと
きだけ動作して積算時間などを検出するので低消費電力
で判別することができる。そして、レベル判定手段で濾
過信号を判別することで、低レベルの振動の有無をマイ
コンが動作することなく判定できるので低消費電力とす
ることができる。そして、３次元方向の振動のうち、１
方向でも設定した低レベルの振動を検知すれば、時間積
算手段が動作するので、地震を見逃すことがない検出を
行うことができる。そして、レベル判定手段後に、各手
段を動作させることで低消費電力とすることができる。
そして、電源を電池とすることで、電源工事が不要で、
電源のない屋外でも使用することができるとともに、ラ
イフラインの商用電源の供給が閉ざされた場合でも使用
することができる。As described above, by detecting the measured seismic intensity only for a specific measured seismic intensity using the time integrating means and the time discriminating means, the level of the earthquake can be detected in a plurality of stages with low power consumption. In addition, the seismic intensity measured by the Japan Meteorological Agency can be detected with high accuracy without using a Fourier transform by the filter means. It can be operated with low power consumption. Then, by using the piezoelectric vibration acceleration detecting means, the vibrator itself generates power, so that amplification can be minimized and power consumption can be reduced. Then, a filter is realized by combining the respective filter circuits, and it is possible to detect the measured seismic intensity determined by the Japan Meteorological Agency by the filter means without using the Fourier transform. By limiting the number to a plurality and a predetermined level, the operation is performed only when necessary and the integrated time is detected, so that the determination can be made with low power consumption. Then, by judging the filtered signal by the level judging means, it is possible to judge the presence / absence of low-level vibration without operating the microcomputer, so that the power consumption can be reduced. Then, among the three-dimensional vibrations, 1
If the low-level vibration set in the direction is detected, the time integrating means operates, so that the detection without missing the earthquake can be performed. Then, the power consumption can be reduced by operating each unit after the level determination unit.
And by using a battery as the power source, power supply work is unnecessary,
It can be used outdoors without a power source, and can be used even when the supply of commercial power to the lifeline is shut off.
【００２２】なお、３次元の振動検知は東西、南北、上
下方向となっているが、必ずしもその方向に設置する必
要はない。３個の振動センサは互いに直交しているの
で、どの方向に設置しても、３方向の信号をベクトル合
成することで、同等の信号が得られることは明白であ
る。そして、圧電型の振動検出手段で説明したが、低消
費電力が進めば、静電容量型や歪み抵抗型でも同様にな
効果を得ることができる。さらに、計測震度５と６で説
明したが、使用する場所、機器、システムなどに応じて
設定値を適時変更することが望ましい。また、ガスの供
給設備の保安管理に用いる場合は報知だけでなく、ガス
流量計やガス遮断弁などを用いてガスの流量に応じてガ
スを遮断する処置を複数段階に設定することができる。
さらに、レベル判定手段２３を用いて説明したが、常時
マイコンで積算時間を検出して所定の処理を行えば、レ
ベル判定手段なしでも計測震度の複数段階検出を実現す
ることができる。Although the three-dimensional vibration detection is performed in the east-west, north-south, and up-down directions, it is not always necessary to set up in that direction. Since the three vibration sensors are orthogonal to each other, it is clear that an equivalent signal can be obtained by vector-combining the signals in the three directions regardless of the installation direction. Although the description has been made with reference to the piezoelectric vibration detecting means, if the power consumption is reduced, the same effect can be obtained with a capacitance type or a strain resistance type. Furthermore, as described in the measurement seismic intensities 5 and 6, it is desirable to change the set value appropriately according to the place, equipment, system, and the like used. Further, in the case of using for security management of a gas supply facility, not only the notification, but also a process of shutting off the gas according to the gas flow rate using a gas flow meter, a gas shutoff valve, or the like can be set in a plurality of stages.
Furthermore, although the description has been made using the level determining means 23, if the integrated time is always detected by the microcomputer and a predetermined process is performed, multiple-stage detection of the measured seismic intensity can be realized without the level determining means.
【００２３】[0023]
【発明の効果】以上説明したように本発明の感震器によ
れば、次の効果が得られる。As described above, according to the vibration sensor of the present invention, the following effects can be obtained.
【００２４】本発明は、地震動などを検出する振動検出
手段と、計測震度のフィルタ特性を実現するフィルタ手
段と、前記振動検出手段の出力信号を前記フィルタ手段
で濾過した信号が所定レベル以上になる時間を積算する
時間積算手段と、前記時間積算手段が積算する積算時間
が所定時間以上になるか否かを判定する時間判別手段と
を備えることで、フーリエ変換を用いることなくフィル
タ手段で気象庁の定める計測震度の検出が可能となり、
時間を積算して判別する簡便な方法で行えるので、高速
処理マイコンを使用することなく計測震度が検出できる
ので低消費電力で動作させることができる。According to the present invention, a vibration detecting means for detecting a seismic motion, a filter means for realizing a filter characteristic of a measured seismic intensity, and a signal obtained by filtering an output signal of the vibration detecting means by the filter means is equal to or higher than a predetermined level. By providing time integrating means for integrating time and time determining means for determining whether or not the integrated time integrated by the time integrating means is equal to or longer than a predetermined time, the filter means of the Meteorological Agency without using Fourier transform It is possible to detect the measured seismic intensity
Since the measurement can be performed by a simple method of discriminating by integrating time, the measured seismic intensity can be detected without using a high-speed processing microcomputer, so that the device can be operated with low power consumption.
【図１】本発明の実施例１の感震器のブロック図FIG. 1 is a block diagram of a seismic sensor according to a first embodiment of the present invention.
【図２】同感震器のフィルタ手段を示すブロック図FIG. 2 is a block diagram showing a filter means of the seismic sensor.
【図３】計測震度を求めるフローチャートFIG. 3 is a flowchart for obtaining a measured seismic intensity.
【図４】同感震器のフィルタ回路の特性を示す特性図FIG. 4 is a characteristic diagram showing characteristics of a filter circuit of the seismic sensor.
【図５】同感震器のフィルタ回路の特性を示す特性図FIG. 5 is a characteristic diagram showing characteristics of a filter circuit of the seismic sensor.
【図６】同感震器の処理を示すフローチャートFIG. 6 is a flowchart showing processing by the seismic sensor.
【図７】従来の感震器を示すブロック図FIG. 7 is a block diagram showing a conventional seismic sensor.
２１ 振動センサ（振動検出手段） ２２ フィルタ回路（フィルタ手段） ２３ レベル判定手段 ２４ 出力判定手段 ２７ 時間積算手段 ２８ 時間判別手段 ３２ 電池 ３６ ハイパスフィルタ回路（フィルタ手段） ３７ 第１のローパスフィルタ回路（フィルタ手段） ３８ 第２のローパスフィルタ回路（フィルタ手段） DESCRIPTION OF SYMBOLS 21 Vibration sensor (vibration detecting means) 22 Filter circuit (filter means) 23 Level determining means 24 Output determining means 27 Time integrating means 28 Time determining means 32 Battery 36 High pass filter circuit (Filter means) 37 First low pass filter circuit (Filter) 38) Second low-pass filter circuit (filter means)
Claims (8)
計測震度のフィルタ特性を実現するフィルタ手段と、前
記振動検出手段の出力信号を前記フィルタ手段で濾過し
た信号が所定レベル以上になる時間を積算する時間積算
手段と、前記時間積算手段が積算する積算時間が所定時
間以上になるか否かを判定する時間判別手段とを備えた
感震器。1. A vibration detecting means for detecting a seismic motion or the like,
Filter means for realizing a filter characteristic of the measured seismic intensity, time integrating means for integrating a time when a signal obtained by filtering the output signal of the vibration detecting means by the filter means becomes a predetermined level or more, and integration for integrating the time integrating means A seismic device comprising: a time determining unit that determines whether a time is equal to or longer than a predetermined time.
出手段を用いて３次元方向の振動が検出可能なように配
置した３次元振動検出手段からなる請求項１記載の感震
器。2. The vibration sensor according to claim 1, wherein said vibration detecting means comprises three-dimensional vibration detecting means arranged so as to detect three-dimensional vibration using piezoelectric vibration acceleration detecting means.
数を有するハイパスフィルタ回路と、第２のカットオフ
周波数を有するローパスフィルタ回路とを、それぞれ少
なくとも１段以上備えた請求項１記載の感震器。3. The seismic sensor according to claim 1, wherein the filter means comprises at least one or more stages of a high-pass filter circuit having a first cut-off frequency and a low-pass filter circuit having a second cut-off frequency. vessel.
超える時間をそれぞれ各所定レベル毎に積算する時間積
算手段を備えて複数段階の計測震度を判別する時間判別
手段を備えた請求項１記載の感震器。4. A time discriminating means for discriminating a plurality of measured seismic intensities, comprising a time accumulating means for accumulating a time when the filtered signal exceeds a plurality of predetermined levels for each predetermined level. The described shock sensor.
かを判定するレベル判定手段を少なくとも１個以上備え
た請求項１〜４のいずれか１項に記載の感震器。5. The seismic sensor according to claim 1, further comprising at least one level determining means for determining whether the filtered signal exceeds a predetermined level.
出力が変化したか否かを判定する出力判定手段を備えた
請求項５記載の感震器。6. The seismic device according to claim 5, further comprising output determination means for determining whether an output of at least one or more level determination means has changed.
化を検知した後、時間積算手段と時間判別手段を動作さ
せる請求項６記載の感震器。7. The seismic sensor according to claim 6, wherein the output judging means operates the time integrating means and the time judging means after detecting the output change of the level judging means.
手段と時間判別手段は、電池で駆動される請求項１〜７
のいずれか１項に記載の感震器。8. The vibration detecting means, the filter means, the time integrating means, and the time determining means are driven by a battery.
The seismic sensor according to any one of the above items.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001044716A JP4427911B2 (en) | 2001-02-21 | 2001-02-21 | Seismograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001044716A JP4427911B2 (en) | 2001-02-21 | 2001-02-21 | Seismograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002243531A true JP2002243531A (en) | 2002-08-28 |
| JP4427911B2 JP4427911B2 (en) | 2010-03-10 |
Family
ID=18906654
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001044716A Expired - Fee Related JP4427911B2 (en) | 2001-02-21 | 2001-02-21 | Seismograph |
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| Country | Link |
|---|---|
| JP (1) | JP4427911B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005196460A (en) * | 2004-01-07 | 2005-07-21 | Kyushu Hitachi Maxell Ltd | Working meter |
| JP2011047657A (en) * | 2009-08-25 | 2011-03-10 | Home Seismometer:Kk | Seismic intensity measuring device |
| JP2015197375A (en) * | 2014-04-01 | 2015-11-09 | 富士電機株式会社 | earthquake measuring device |
| WO2021124329A1 (en) * | 2019-12-17 | 2021-06-24 | E.Q. Earthquake Ltd. | Systems and methods for earthquake detection and alerts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6666023B2 (en) | 2015-07-02 | 2020-03-13 | 東京瓦斯株式会社 | Seismic sensor and earthquake judgment method |
-
2001
- 2001-02-21 JP JP2001044716A patent/JP4427911B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005196460A (en) * | 2004-01-07 | 2005-07-21 | Kyushu Hitachi Maxell Ltd | Working meter |
| JP4708709B2 (en) * | 2004-01-07 | 2011-06-22 | 九州日立マクセル株式会社 | Working meter |
| JP2011047657A (en) * | 2009-08-25 | 2011-03-10 | Home Seismometer:Kk | Seismic intensity measuring device |
| JP2015197375A (en) * | 2014-04-01 | 2015-11-09 | 富士電機株式会社 | earthquake measuring device |
| WO2021124329A1 (en) * | 2019-12-17 | 2021-06-24 | E.Q. Earthquake Ltd. | Systems and methods for earthquake detection and alerts |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4427911B2 (en) | 2010-03-10 |
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