JP2011159005A5 - - Google Patents
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- JP2011159005A5 JP2011159005A5 JP2010018598A JP2010018598A JP2011159005A5 JP 2011159005 A5 JP2011159005 A5 JP 2011159005A5 JP 2010018598 A JP2010018598 A JP 2010018598A JP 2010018598 A JP2010018598 A JP 2010018598A JP 2011159005 A5 JP2011159005 A5 JP 2011159005A5
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- sound
- alarm device
- piezoelectric buzzer
- fire receiver
- acoustic alarm
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本発明に係る音響警報装置は、前記圧電ブザー鳴動回路及び前記コンデンサへ供給する電流を制限する電流制限回路を備えたものである。 The acoustic alarm device according to the present invention includes the piezoelectric buzzer sounding circuit and a current limiting circuit for limiting a current supplied to the capacitor.
制御回路31は、火災受信機FAから音響鳴動の制御信号を受信すると、所定の周波数でトランジスタ35をオン/オフさせて、コイル33に所定の周波数で電圧を印加する。そして、トランジスタ35をオフしたときにコイル33に発生した昇圧電圧を圧電ブザー32に印加することにより、圧電ブザー32を鳴動させる。
ここで、最大音圧を得ることのできる圧電ブザー32の駆動周波数は、各個体でばらつきがある。圧電ブザー32の個体毎の特性に合わせて駆動周波数を調整すれば、それぞれの圧電ブザー32が最大音圧で鳴動することができるが、個体ごとに調整するには手間がかかり、多大なコストがかかる。また、設置箇所の温度条件等によっても、最大音圧を得ることのできる圧電ブザー32の駆動周波数が変化しうるので、たとえ調整したとしても最大音圧を得られるとは限らない。
このため、制御回路31は、トランジスタ35をオン/オフさせる周波数、すなわち、圧電ブザー32に印加する電圧の周波数を所定の範囲でスイープさせる。例えば、2.5kHz、2.6kHz、2.7kHz、・・・、3.5kHz、のように、0.1kHz刻みで10msecずつ電圧を印加し、その周波数で圧電ブザー32を鳴動させる。このように、印加する電圧の周波数を所定の範囲でスイープさせることで、いずれかのタイミングで最も大きい音圧レベルで音響鳴動させることができる。なお、トランジスタ35は、電流制限手段34のオン/オフするスイッチとして動作するとともに、電流制限手段34の構成部品としても兼用されているため、部品点数を削減することができ、コストにおいて優れる。
When receiving the acoustic ringing control signal from the fire receiver FA, the control circuit 31 turns on / off the transistor 35 at a predetermined frequency and applies a voltage to the coil 33 at the predetermined frequency. The boosted voltage generated in the coil 33 when the transistor 35 is turned off is applied to the piezoelectric buzzer 32 so that the piezoelectric buzzer 32 sounds.
Here, the driving frequency of the piezoelectric buzzer 32 capable of obtaining the maximum sound pressure varies among the individual. If the drive frequency is adjusted in accordance with the characteristics of each individual piezoelectric buzzer 32, each piezoelectric buzzer 32 can ring at the maximum sound pressure. Take it. Further, since the drive frequency of the piezoelectric buzzer 32 that can obtain the maximum sound pressure can be changed depending on the temperature condition of the installation location, the maximum sound pressure is not always obtained even if it is adjusted.
Therefore, the control circuit 31 sweeps the frequency at which the transistor 35 is turned on / off, that is, the frequency of the voltage applied to the piezoelectric buzzer 32 within a predetermined range. For example, a voltage is applied in increments of 0.1 kHz, such as 2.5 kHz, 2.6 kHz, 2.7 kHz,..., 3.5 kHz, and the piezoelectric buzzer 32 is caused to ring at that frequency. In this way, by sweeping the frequency of the voltage to be applied within a predetermined range, it is possible to sound the sound with the highest sound pressure level at any timing. The transistor 35 is configured to operate as a switch for turning on / off of the current limit means 34, because it is also used as a component of the current limiting means 34, it is possible to reduce the number of components, excellent in cost.
上述したように、本実施の形態1に係る音響警報装置C11によれば、電流制限手段34によりコイル33に流れる電流を制限することができる。また、コンデンサ23により、圧電ブザー鳴動回路30が消費する電流のピークを抑えて平均化することができる。さらに、電流制限回路22より、圧電ブザー鳴動回路30に流れる電流を制限することができる。 As described above, according to the acoustic alarm device C11 according to the first embodiment, the current flowing through the coil 33 can be limited by the current limiting means 34. Moreover, the capacitor 23 can suppress and average the current peak consumed by the piezoelectric buzzer sounding circuit 30. Further, the current flowing through the piezoelectric buzzer sounding circuit 30 can be limited by the current limiting circuit 22.
このように、本実施の形態2に係る音響警報装置によれば、コイル33に印加する電圧のデューティ比を変化させるようにした。このため、圧電ブザー32の音圧レベル上昇に寄与しない電流が流れるのを抑制することができるので、消費電力を低減することができる。
Thus, according to the acoustic alarm device according to the second embodiment, and so as to vary the duty ratio of the voltage applied to the
Claims (6)
前記圧電ブザーに並列に接続されたコイル、
前記圧電ブザーと前記コイルへの通電時間を調整するスイッチング手段、
及び、周波数を変化させて前記スイッチング手段のオン/オフ動作を制御する制御手段を備えた圧電ブザー鳴動回路と、
前記圧電ブザー鳴動回路に並列に接続されたコンデンサと、を備えた
ことを特徴とする音響警報装置。 Piezoelectric buzzer,
A coil connected in parallel to the piezoelectric buzzer,
Switching means for adjusting energization time to the piezoelectric buzzer and the coil;
And a piezoelectric buzzer sounding circuit comprising control means for controlling the on / off operation of the switching means by changing the frequency,
An acoustic alarm device comprising: a capacitor connected in parallel to the piezoelectric buzzer ringing circuit.
ことを特徴とする請求項1記載の音響警報装置。 The acoustic alarm device according to claim 1, further comprising a current limiting circuit that limits a current supplied to the piezoelectric buzzer sounding circuit and the capacitor.
ことを特徴とする請求項1又は請求項2記載の音響警報装置。 The acoustic alarm device according to claim 1, wherein the control unit changes a duty ratio of the switching unit.
ことを特徴とする請求項3記載の音響警報装置。 The acoustic alarm device according to claim 3 , wherein the control means changes the duty ratio so that the energization time to the coil is constant.
前記火災受信機に信号授受の経路となる信号線で接続される請求項1〜請求項4のいずれか記載の音響警報装置と、を備え、
前記音響警報装置は、前記火災受信機から送信される制御信号に基づいて音響鳴動する
ことを特徴とする火災報知設備。 A fire receiver,
The sound alarm device according to any one of claims 1 to 4, wherein the sound alarm device is connected to the fire receiver via a signal line serving as a signal transfer path,
The sound alarm device sounds sound based on a control signal transmitted from the fire receiver.
前記火災受信機に信号授受の経路となる信号線で接続される請求項1〜請求項4のいずれか記載の複数の音響警報装置と、を備え、
前記複数の音響警報装置は、前記火災受信機から送信される制御信号に基づいて、前記複数の音響装置間で同期して断続的に音響鳴動する
ことを特徴とする火災報知設備。 A fire receiver,
A plurality of acoustic alarm devices according to any one of claims 1 to 4, wherein the sound receiver is connected to the fire receiver via a signal line serving as a signal transmission / reception route,
The plurality of sound alarm devices sound intermittently and synchronously between the plurality of sound devices based on a control signal transmitted from the fire receiver.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010018598A JP5489754B2 (en) | 2010-01-29 | 2010-01-29 | Acoustic alarm device and fire alarm equipment provided with the same |
CN201110022350.4A CN102157145B (en) | 2010-01-29 | 2011-01-17 | Audible alarm device and fire alarm system including the same |
EP11151205.9A EP2362379B1 (en) | 2010-01-29 | 2011-01-18 | Audible alarm device and fire alarm system including the same |
CA2728828A CA2728828C (en) | 2010-01-29 | 2011-01-18 | Audible alarm device and fire alarm system including the same |
US13/012,518 US20110187541A1 (en) | 2010-01-29 | 2011-01-24 | Audible alarm device and fire alarm system including the same |
MX2011001139A MX2011001139A (en) | 2010-01-29 | 2011-01-28 | Audible alarm device and fire alarm system including the same. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010018598A JP5489754B2 (en) | 2010-01-29 | 2010-01-29 | Acoustic alarm device and fire alarm equipment provided with the same |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011159005A JP2011159005A (en) | 2011-08-18 |
JP2011159005A5 true JP2011159005A5 (en) | 2012-09-27 |
JP5489754B2 JP5489754B2 (en) | 2014-05-14 |
Family
ID=44590925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010018598A Expired - Fee Related JP5489754B2 (en) | 2010-01-29 | 2010-01-29 | Acoustic alarm device and fire alarm equipment provided with the same |
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JP (1) | JP5489754B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6044014B2 (en) * | 2012-06-14 | 2016-12-14 | 新コスモス電機株式会社 | Setting method of frequency output characteristics of alarm sound |
JP6208626B2 (en) * | 2014-06-06 | 2017-10-04 | ホーチキ株式会社 | Disaster prevention equipment |
JP6775201B2 (en) * | 2017-05-22 | 2020-10-28 | パナソニックIpマネジメント株式会社 | Alarm sound sound equipment and sound system |
JP7343379B2 (en) * | 2019-12-11 | 2023-09-12 | セイコーインスツル株式会社 | Sound alarm device, movement and clock |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6344872Y2 (en) * | 1980-06-03 | 1988-11-21 | ||
JPS6366899U (en) * | 1986-10-20 | 1988-05-06 | ||
JP3121250B2 (en) * | 1995-11-20 | 2000-12-25 | ホーチキ株式会社 | Alarm sound device |
JP3113946U (en) * | 2005-06-22 | 2005-09-22 | コビシ電機株式会社 | Alarm system and temporal alarm voltage generator |
JP4468982B2 (en) * | 2007-10-24 | 2010-05-26 | 三菱電機株式会社 | In-vehicle buzzer sound pressure controller |
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2010
- 2010-01-29 JP JP2010018598A patent/JP5489754B2/en not_active Expired - Fee Related
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