CN101055312A - Ultrasonic sensor - Google Patents

Ultrasonic sensor Download PDF

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Publication number
CN101055312A
CN101055312A CN 200710095819 CN200710095819A CN101055312A CN 101055312 A CN101055312 A CN 101055312A CN 200710095819 CN200710095819 CN 200710095819 CN 200710095819 A CN200710095819 A CN 200710095819A CN 101055312 A CN101055312 A CN 101055312A
Authority
CN
China
Prior art keywords
ultrasonic sensor
housing
bottom tube
piezoelectric element
vibration
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.)
Pending
Application number
CN 200710095819
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Chinese (zh)
Inventor
重森巧
杉原忍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON CERAMICS CO Ltd
Original Assignee
NIPPON CERAMICS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON CERAMICS CO Ltd filed Critical NIPPON CERAMICS CO Ltd
Publication of CN101055312A publication Critical patent/CN101055312A/en
Pending legal-status Critical Current

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  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

The invention relates to an ultrasonic sensor. It is required to expand the detecting distance amplitude in the apparatus for judging the approaching state of the barrier by ultrasonic sensor and applying approach-avoidance. The invention sets high-low difference at the basolateral part of the drip proof type ultrasonic sensor with base barrel shaped shell to produce the underside vibration part into extrusive shape and provide the side wall thickness around vibration surface thinner than vibration surface. The invention enables the high sound pressure, high sensibility, reduces the reverberation time and increases the exciter response.

Description

Ultrasonic sensor
Technical field
The present invention relates to by sending, receive the ultrasonic sensor that ultrasound wave carries out the detection of barrier etc.
Background technology
The cut-open view of existing drip proof type ultrasonic sensor as shown in Figures 2 and 3, it is constructed as follows: with bonding agent 1 piezoelectric element 2 is bonded in the inside, bottom surface that bottom tube-like housing 6 is arranged that is made of aluminium etc., and with input and output lead-in wire 5 with the opposite face of bonding plane one side piezoelectric element 2 and that bottom tube-like housing 6 is arranged and 6 solders of bottom tube-like housing are arranged and it is drawn; Piezoelectric element 2 and have bottom tube-like housing 6 to be electrically connected has again, piezoelectric element 2 and input and output lead-in wire 5a and bottom tube-like housing 6 is arranged and input and output lead-in wire 5b is electrically connected; Place the acoustic absorbant 3 of foam elastomer etc. on the upper surface of piezoelectric element, the side has been filled into the elastomeric sealant 4 of silicone etc. in the bottom tube-like housing 6 from it again.In general, there is the outside, bottom surface of bottom tube-like housing 6 to be tabular (Fig. 2) or coniform (Fig. 3).
The background technology relevant with ultrasonic sensor of the present invention can participate in patent documentation 1-Japan special permission open communique 2002-262383 number " ultrasonic oscillator " and non-patent literature 1-Tomikawa Yoshio work " ultrasound wave electronics oscillation theory-basis and application "; towards storehouse bookstore, 1998.
In device,, require the detection distance range of expansion ultrasonic sensor for realizing more complicated and correct processing near measures such as situation and enforcement avoidance processing by ultrasonic sensor disturbance in judgement thing.Therefore, make and send acoustic pressure and reach high acoustic pressure and improve the sensitivity that receives, and detect and shorten the reverberation time and all become problem for carrying out short range for carrying out remote detection.Also have, for improving accuracy of detection, requirement can be with less actuation duration output sound wave.Existing by the drip proof type ultrasonic sensor that has the bottom tube-like housing to constitute in, the vibration of bottom surface will be delivered to a portion and become the reason that hyperacoustic transmission output efficiency reduces, the reverberation time prolongs and exciter response worsens.The bottom surface is being made in the cone shape ultrasonic sensor, because the area of the thinner wall section of binding vibration section and cylindrical portion is less, therefore, in order to reach the purpose of vibration isolation and so on, not only insufficient but also unstable.
Summary of the invention
Purpose of the present invention just is to address the above problem.
The present invention is by the bottom surface arranged outside difference of height that the bottom tube-like housing is arranged at the drip proof type ultrasonic sensor, outstanding shape is made in the vibration section of bottom surface, and make vibration plane sidewall thickness on every side, thereby realized high sound pressureization, high sensitivityization, shortening reverberation time and improvement response to excitation than vibration plane thin thickness.In addition, owing to can shorten the actuation duration, therefore, except improving precision, also help to shorten the reverberation time to the improvement of sensor response.
The present invention has been owing to realized high sound pressureization, the high sensitivityization of ultrasonic sensor and shortened the reverberation time, thereby enlarged the detection distance range of barrier.Also have, can be by improving response characteristic, and improved accuracy of detection.
Description of drawings
Fig. 1 is the cut-open view of the ultrasonic sensor of embodiments of the present invention.
Fig. 2 is the cut-open view (tabular bottom surface) of the ultrasonic sensor of existing mode.
Fig. 3 is the cut-open view (coniform bottom surface) of the ultrasonic sensor of existing mode.
Among the figure,
1-bonding agent, 2-piezoelectric element, 3-acoustic absorbant, 4-elastomeric sealant, 5-electrode outlet line, 6-have the bottom tube-like housing
Embodiment
The structure of ultrasonic sensor of the present invention is as follows: as shown in Figure 1, with bonding agent 1 piezoelectric element 2 is bonded in the inside, bottom surface that bottom tube-like housing 6 is arranged that is made of aluminium etc., and the face that input and output lead-in wire 5 is opposite with bonding plane one side piezoelectric element 2 and that bottom tube-like housing 6 is arranged and have 6 solders of bottom tube-like housing to be connected and it is drawn; Piezoelectric element 2 and have bottom tube-like housing 6 to be electrically connected has again, piezoelectric element 2 and input and output lead-in wire 5a and bottom tube-like housing 6 is arranged and input and output lead-in wire 5b is electrically connected; Place the acoustic absorbant 3 of foam elastomer etc. on the upper surface of piezoelectric element, the side has been filled into the elastomeric sealant 4 of silicone etc. in the bottom tube-like housing 6 from it again.The bottom surface arranged outside difference of height of bottom tube-like housing 6 is being arranged, the thickness of lug boss sidewall is being made identical with bottom thickness or the thinner (structure of the thickness among Fig. 1: a 〉=b).

Claims (1)

1. ultrasonic sensor, it is inner and in the ultrasonic sensor that constitutes that piezoelectric element is bonded in the bottom surface of bottom tube-like housing, it is characterized in that, by with near the tube portion sidewall thickness the bottom surface (the thickness b of " Fig. 1 ") and bottom thickness (thickness of " Fig. 1 " a) make identical or thinner, thereby improved detection of obstacles distance range and precision.
CN 200710095819 2006-04-10 2007-04-05 Ultrasonic sensor Pending CN101055312A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006108071A JP2007282058A (en) 2006-04-10 2006-04-10 Ultrasonic sensor
JP2006108071 2006-04-10

Publications (1)

Publication Number Publication Date
CN101055312A true CN101055312A (en) 2007-10-17

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Family Applications (2)

Application Number Title Priority Date Filing Date
CN 200710095819 Pending CN101055312A (en) 2006-04-10 2007-04-05 Ultrasonic sensor
CNU2007201422167U Expired - Fee Related CN201072443Y (en) 2006-04-10 2007-04-05 Ultrasonic sensor

Family Applications After (1)

Application Number Title Priority Date Filing Date
CNU2007201422167U Expired - Fee Related CN201072443Y (en) 2006-04-10 2007-04-05 Ultrasonic sensor

Country Status (2)

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JP (1) JP2007282058A (en)
CN (2) CN101055312A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102506929A (en) * 2011-11-15 2012-06-20 上官明禹 High-pressure-resistant air-coupled ultrasonic transducer and manufacturing method thereof
CN102652269A (en) * 2010-01-21 2012-08-29 三菱电机株式会社 Ultrasonic wave sensor and method for attaching ultrasonic wave sensor
US8853919B2 (en) 2012-02-21 2014-10-07 Tung Thih Electronic Co., Ltd. Ultrasonic sensor device
CN108716937A (en) * 2018-05-18 2018-10-30 宁波华创锐科智能科技有限公司 A kind of device measuring container capacity based on Internet of Things
CN111133772A (en) * 2017-09-21 2020-05-08 株式会社村田制作所 Ultrasonic sensor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010021869A1 (en) * 2010-05-28 2011-12-01 Siemens Aktiengesellschaft Ultrasonic transducer for ultrasonic sensor in industrial automation field, has sound emitting and/or sound-absorbing surfaces comprising anti-fog coating that contains silicon nanoparticles embedded in polymer film
JP5537321B2 (en) * 2010-07-28 2014-07-02 日本セラミック株式会社 Ultrasonic transceiver
WO2013118185A1 (en) * 2012-02-09 2013-08-15 三菱電機株式会社 Airborne ultrasonic sensor
CN104335604B (en) * 2013-04-19 2017-10-10 株式会社村田制作所 Ultrasonic sensor and its manufacture method
JP7162382B2 (en) * 2019-09-25 2022-10-28 トリプル・ダブリュー・ジャパン株式会社 Biological information estimation probe and biological information estimation device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10206528A (en) * 1997-01-21 1998-08-07 Oki Ceramic Kogyo Kk Ultrasonic sensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102652269A (en) * 2010-01-21 2012-08-29 三菱电机株式会社 Ultrasonic wave sensor and method for attaching ultrasonic wave sensor
CN102652269B (en) * 2010-01-21 2015-09-30 三菱电机株式会社 The installation method of ultrasonic sensor and ultrasonic sensor
CN102506929A (en) * 2011-11-15 2012-06-20 上官明禹 High-pressure-resistant air-coupled ultrasonic transducer and manufacturing method thereof
CN102506929B (en) * 2011-11-15 2015-06-10 上官明禹 High-pressure-resistant air-coupled ultrasonic transducer and manufacturing method thereof
US8853919B2 (en) 2012-02-21 2014-10-07 Tung Thih Electronic Co., Ltd. Ultrasonic sensor device
CN111133772A (en) * 2017-09-21 2020-05-08 株式会社村田制作所 Ultrasonic sensor
CN108716937A (en) * 2018-05-18 2018-10-30 宁波华创锐科智能科技有限公司 A kind of device measuring container capacity based on Internet of Things

Also Published As

Publication number Publication date
JP2007282058A (en) 2007-10-25
CN201072443Y (en) 2008-06-11

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Application publication date: 20071017