JP2008035273A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2008035273A5 JP2008035273A5 JP2006207173A JP2006207173A JP2008035273A5 JP 2008035273 A5 JP2008035273 A5 JP 2008035273A5 JP 2006207173 A JP2006207173 A JP 2006207173A JP 2006207173 A JP2006207173 A JP 2006207173A JP 2008035273 A5 JP2008035273 A5 JP 2008035273A5
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- voltage
- limiting resistor
- current limiting
- transistor
- 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
- 238000001514 detection method Methods 0.000 claims 4
- 238000003384 imaging method Methods 0.000 claims 4
- 230000005284 excitation Effects 0.000 claims 3
- 230000003287 optical Effects 0.000 claims 2
- 230000000630 rising Effects 0.000 claims 2
Claims (4)
前記撮像素子の前方に配置された光学素子と、
前記光学素子を振動させる圧電素子を備える加振装置と、
前記圧電素子に電圧を印加するための駆動手段と、
前記駆動手段と前記圧電素子との間に接続され、前記駆動手段により電圧が印加されたときに前記圧電素子に供給される電流を制限する電流制限抵抗と、
前記圧電素子に印加される電圧の立ち上がり時又は立ち下がり時に前記電流制限抵抗の両端に発生する電圧に基づいて、前記加振装置の故障を検出する検出手段と、
を具備することを特徴とする撮像装置。 An image sensor that photoelectrically converts a subject image;
An optical element disposed in front of the imaging element;
An excitation device including a piezoelectric element that vibrates the optical element;
Driving means for applying a voltage to the piezoelectric element;
A current limiting resistor that limits the current when a voltage is supplied to the piezoelectric element when it is applied by the connected, the drive means between the drive means and the piezoelectric element,
Detecting means for detecting a failure of the excitation device based on a voltage generated at both ends of the current limiting resistor at the time of rising or falling of the voltage applied to the piezoelectric element;
An imaging apparatus comprising:
圧電素子と、
前記圧電素子に電圧を印加するための駆動手段と、
前記駆動手段と前記圧電素子との間に接続され、前記駆動手段により電圧が印加されたときに前記圧電素子に供給される電流を制限する電流制限抵抗と、
前記圧電素子に印加される電圧の立ち上がり時又は立ち下がり時に前記電流制限抵抗の両端に発生する電圧に基づいて、前記加振装置の故障を検出する検出手段と、
を具備することを特徴とする加振装置。 A vibration exciter,
A piezoelectric element;
Driving means for applying a voltage to the piezoelectric element;
A current limiting resistor connected between the driving means and the piezoelectric element and limiting a current supplied to the piezoelectric element when a voltage is applied by the driving means ;
Detecting means for detecting a failure of the excitation device based on a voltage generated at both ends of the current limiting resistor at the time of rising or falling of the voltage applied to the piezoelectric element;
A vibration apparatus comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006207173A JP4859216B2 (en) | 2006-07-28 | 2006-07-28 | Imaging device and vibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006207173A JP4859216B2 (en) | 2006-07-28 | 2006-07-28 | Imaging device and vibration device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008035273A JP2008035273A (en) | 2008-02-14 |
| JP2008035273A5 true JP2008035273A5 (en) | 2009-08-27 |
| JP4859216B2 JP4859216B2 (en) | 2012-01-25 |
Family
ID=39124221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006207173A Expired - Fee Related JP4859216B2 (en) | 2006-07-28 | 2006-07-28 | Imaging device and vibration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4859216B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101063047B1 (en) * | 2010-06-23 | 2011-09-07 | 엘지이노텍 주식회사 | Camera module with mems actuator and method for driving the same |
| US8955947B2 (en) * | 2011-02-28 | 2015-02-17 | Canon Kabushiki Kaisha | Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device |
| JP6063672B2 (en) * | 2011-09-06 | 2017-01-18 | キヤノン株式会社 | Piezoelectric ceramics, piezoelectric ceramic manufacturing method, piezoelectric element, liquid discharge head, liquid discharge device, ultrasonic motor, optical device, vibration device, dust removing device, imaging device, piezoelectric acoustic component, and electronic device |
| US20180202925A1 (en) * | 2015-10-07 | 2018-07-19 | Panasonic Intellectual Property Management Co. Ltd. | Sensor |
| JP6265577B1 (en) | 2016-09-08 | 2018-01-24 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ | IMAGING DEVICE, IMAGING SYSTEM, MOBILE BODY, METHOD, AND PROGRAM |
| JP6286732B1 (en) | 2016-09-08 | 2018-03-07 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ | Imaging system, moving object, method and program |
| JP6761761B2 (en) * | 2017-01-19 | 2020-09-30 | 株式会社サタケ | Piezoelectric actuators, anomaly detection circuits, and piezoelectric valve systems |
| KR20210134958A (en) * | 2019-04-25 | 2021-11-11 | 가부시키가이샤 후지킨 | Driving device provided with deterioration detection circuit for piezoelectric element and deterioration detection method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09252079A (en) * | 1996-03-15 | 1997-09-22 | Yazaki Corp | Interruption display device of overcurrent and overheat protective semiconductor switching element |
| JP2000080540A (en) * | 1998-09-04 | 2000-03-21 | Tdk Corp | Piezoelectric actuator-driving circuit for selecting needle of knitting machine |
| JP3947689B2 (en) * | 2002-06-21 | 2007-07-25 | オリンパス株式会社 | Electronic imaging device |
-
2006
- 2006-07-28 JP JP2006207173A patent/JP4859216B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008035273A5 (en) | ||
| JP2009017461A5 (en) | ||
| JP4633058B2 (en) | Vibration type inertial force sensor | |
| JP2009267872A5 (en) | ||
| JP2005241625A5 (en) | ||
| JP2009225503A5 (en) | ||
| JP2010232713A5 (en) | ||
| ATE302498T1 (en) | MOTOR DRIVE DEVICE FOR A LINEAR VIBRATING MOTOR | |
| JP2007163595A5 (en) | ||
| DK2015034T3 (en) | Coriolis flowmeter with optical vibration sensor | |
| JP2007212262A5 (en) | ||
| EP1703264A3 (en) | Load detection device | |
| JP2010040049A5 (en) | ||
| JP2009236596A (en) | Vibration sensor and method for determining state of the same | |
| JP2004028665A (en) | Temperature measuring method, object detecting method and object sensing device for vibratory level sensor | |
| JP2008145371A5 (en) | ||
| JP5889712B2 (en) | Ultrasonic sensor | |
| JP2008228366A5 (en) | ||
| WO2014176829A1 (en) | Piezoelectric type acceleration sensing system with self-excitation diagnosis | |
| JP2012194435A5 (en) | ||
| JP2016149620A5 (en) | ||
| JP2002354853A5 (en) | ||
| JP2009159479A5 (en) | ||
| JP2010043962A5 (en) | ||
| DE502006008938D1 (en) | Field modulating angle measuring device and method for its operation |