JP2005291798A - 発信装置、音波センサ及び自走車 - Google Patents
発信装置、音波センサ及び自走車 Download PDFInfo
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- JP2005291798A JP2005291798A JP2004104391A JP2004104391A JP2005291798A JP 2005291798 A JP2005291798 A JP 2005291798A JP 2004104391 A JP2004104391 A JP 2004104391A JP 2004104391 A JP2004104391 A JP 2004104391A JP 2005291798 A JP2005291798 A JP 2005291798A
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- Prior art keywords
- piezoelectric element
- sound wave
- frequency band
- wave sensor
- transmitter
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0255—Control of position or course in two dimensions specially adapted to land vehicles using acoustic signals, e.g. ultra-sonic singals
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0223—Driving circuits for generating signals continuous in time
- B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
【解決手段】 発信装置1の駆動回路11を、圧電素子13aを含む振動系が最も強く共振する共振周波数帯域と異なる周波数帯域にて圧電素子13aを駆動するようにした。また、音波センサの駆動回路11を、音波を発信、受信する圧電素子を含む振動系が最も強く共振する共振周波数帯域と異なる周波数帯域にて圧電素子を駆動するようにした。また音波センサの発信装置1を前述の発信装置1にした。さらに自走車に前述の音波センサを備えた。
【選択図】 図1
Description
2 受信装置
8a,8b,8c,8d 壁(被検出物)
11 駆動回路
13a 圧電素子
Claims (4)
- 圧電素子を駆動回路で駆動して音波を発信する発信装置において、
前記駆動回路は、前記圧電素子を含む振動系が最も強く共振する共振周波数帯域と異なる周波数帯域で前記圧電素子を駆動すべくなしてあることを特徴とする発信装置。 - 発信装置から音波を発信し、被検出物で反射した音波を受信装置で受信して前記被検出物に関する情報を得る音波センサにおいて、
前記発信装置は、請求項1に記載された発信装置であることを特徴とする音波センサ。 - 圧電素子を駆動回路で駆動して音波を発信し、被検出物で反射した音波を前記圧電素子で受信して前記被検出物に関する情報を得る音波センサにおいて、
前記駆動回路は、前記圧電素子を含む振動系が最も強く共振する共振周波数帯域と異なる周波数帯域で前記圧電素子を駆動すべくなしてあることを特徴とする音波センサ。 - 被検出物を検出する音波センサを備え、該音波センサからの情報に基づいて発停,操向制御を行う自走車において、
前記音波センサは、請求項2又は3に記載された音波センサであることを特徴とする自走車。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004104391A JP4036843B2 (ja) | 2004-03-31 | 2004-03-31 | 発信装置、音波センサ及び自走車 |
US11/045,144 US7098579B2 (en) | 2004-03-31 | 2005-01-31 | Transmitting apparatus, sound sensor and autonomous traveling vehicle |
KR1020050013648A KR101126512B1 (ko) | 2004-03-31 | 2005-02-18 | 발신 장치, 음파 센서 및 자주차 |
CN2005100516637A CN1678133B (zh) | 2004-03-31 | 2005-02-18 | 发射装置及声波传感器 |
US11/510,839 US20070046145A1 (en) | 2004-03-31 | 2006-08-28 | Transmitting apparatus, sound sensor and autonomous traveling vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004104391A JP4036843B2 (ja) | 2004-03-31 | 2004-03-31 | 発信装置、音波センサ及び自走車 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005291798A true JP2005291798A (ja) | 2005-10-20 |
JP4036843B2 JP4036843B2 (ja) | 2008-01-23 |
Family
ID=35050380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004104391A Expired - Fee Related JP4036843B2 (ja) | 2004-03-31 | 2004-03-31 | 発信装置、音波センサ及び自走車 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7098579B2 (ja) |
JP (1) | JP4036843B2 (ja) |
KR (1) | KR101126512B1 (ja) |
CN (1) | CN1678133B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009028591A1 (ja) * | 2007-08-30 | 2009-03-05 | Nec Corporation | 超音波伝播時間測定システム |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005011733B4 (de) * | 2005-03-11 | 2008-05-08 | Werma Signaltechnik Gmbh + Co. Kg | Signaleinheit mit einem akustischen Signalgeber |
CN102972046B (zh) * | 2010-06-30 | 2016-08-03 | 日本电气株式会社 | 振荡装置和电子设备 |
EP3876068A1 (en) * | 2011-04-28 | 2021-09-08 | Positec Power Tools (Suzhou) Co., Ltd | Automatic working system, automatic walking device and steering method thereof |
CN102322905B (zh) * | 2011-05-24 | 2013-04-10 | 国网电力科学研究院 | 一种超声波流量计换能器驱动电路 |
CN105911981A (zh) * | 2012-04-28 | 2016-08-31 | 苏州宝时得电动工具有限公司 | 自动工作系统、自动行走设备及其转向方法 |
EP3149597B1 (en) * | 2014-06-02 | 2019-10-02 | Bastille Networks, Inc. | Electromagnetic threat detection and mitigation in the internet of things |
CN104569995A (zh) * | 2015-01-27 | 2015-04-29 | 华北水利水电大学 | 小盲区超声波传感器 |
JP6786407B2 (ja) * | 2017-01-23 | 2020-11-18 | 株式会社クボタ | 作業車無線管理システム |
CN112880733B (zh) * | 2020-08-03 | 2023-04-21 | 上海三利数字技术有限公司 | 限高防护架状态监测装置及方法 |
CN113655414B (zh) * | 2021-08-30 | 2024-05-07 | 杭州电子科技大学 | 用压电陶瓷产生共振频带的光学磁场传感系统 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782550A (en) * | 1988-02-12 | 1988-11-08 | Von Schrader Company | Automatic surface-treating apparatus |
JPH09146637A (ja) * | 1995-11-27 | 1997-06-06 | Fujitsu General Ltd | 無人走行車の制御方法 |
JP2937153B2 (ja) * | 1996-12-17 | 1999-08-23 | 日本電気株式会社 | 超音波トランスデューサ及びこれを用いる水中用送受波器 |
JPH10290495A (ja) | 1997-04-15 | 1998-10-27 | Matsushita Electric Works Ltd | 音波信号送波方法及びその装置並びに音波信号受波方法及びその装置並びにこれらを用いた音波信号送受波処理システム |
US6250162B1 (en) * | 1998-04-24 | 2001-06-26 | Murata Manufacturing Co., Ltd. | Ultrasonic sensor |
-
2004
- 2004-03-31 JP JP2004104391A patent/JP4036843B2/ja not_active Expired - Fee Related
-
2005
- 2005-01-31 US US11/045,144 patent/US7098579B2/en not_active Expired - Fee Related
- 2005-02-18 KR KR1020050013648A patent/KR101126512B1/ko not_active IP Right Cessation
- 2005-02-18 CN CN2005100516637A patent/CN1678133B/zh not_active Expired - Fee Related
-
2006
- 2006-08-28 US US11/510,839 patent/US20070046145A1/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009028591A1 (ja) * | 2007-08-30 | 2009-03-05 | Nec Corporation | 超音波伝播時間測定システム |
JPWO2009028591A1 (ja) * | 2007-08-30 | 2010-12-02 | 日本電気株式会社 | 超音波伝播時間測定システム |
US8280692B2 (en) | 2007-08-30 | 2012-10-02 | Nec Corporation | Ultrasonic wave propagation time measuring system |
JP5568986B2 (ja) * | 2007-08-30 | 2014-08-13 | 日本電気株式会社 | 超音波伝播時間測定システム |
Also Published As
Publication number | Publication date |
---|---|
US7098579B2 (en) | 2006-08-29 |
JP4036843B2 (ja) | 2008-01-23 |
US20050231068A1 (en) | 2005-10-20 |
KR101126512B1 (ko) | 2012-04-12 |
CN1678133A (zh) | 2005-10-05 |
US20070046145A1 (en) | 2007-03-01 |
CN1678133B (zh) | 2012-02-22 |
KR20060043000A (ko) | 2006-05-15 |
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