KR200446261Y1 - Air transmission ultrasonic sensor - Google Patents

Air transmission ultrasonic sensor Download PDF

Info

Publication number
KR200446261Y1
KR200446261Y1 KR2020070004203U KR20070004203U KR200446261Y1 KR 200446261 Y1 KR200446261 Y1 KR 200446261Y1 KR 2020070004203 U KR2020070004203 U KR 2020070004203U KR 20070004203 U KR20070004203 U KR 20070004203U KR 200446261 Y1 KR200446261 Y1 KR 200446261Y1
Authority
KR
South Korea
Prior art keywords
ultrasonic sensor
present
shortening
cylindrical case
response
Prior art date
Application number
KR2020070004203U
Other languages
Korean (ko)
Other versions
KR20070001107U (en
Inventor
타쿠미 시게모리
시노부 스기하라
Original Assignee
니폰 세라믹 가부시키가이샤
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 니폰 세라믹 가부시키가이샤 filed Critical 니폰 세라믹 가부시키가이샤
Priority to KR2020070004203U priority Critical patent/KR200446261Y1/en
Publication of KR20070001107U publication Critical patent/KR20070001107U/en
Application granted granted Critical
Publication of KR200446261Y1 publication Critical patent/KR200446261Y1/en

Links

Images

Classifications

    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/521—Constructional features
    • 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
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • 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

Abstract

본 고안에 따른 초음파 센서는, 방적형 초음파 센서의 저면을 갖는 통형의 케이스의 저면 외측에 단의 차이를 마련하여 저면의 진동부가 돌출된 형상으로 하여, 진동면 주위의 벽면 두께를 진동면보다 얇게 형성 함으로써, 고음압화, 고감도화, 잔향 시간의 단축 및 여진의 응답 등의 개선을 실현하였다. 또한, 본 고안에 따른 초음파 센서는 응답 개선을 통해 여진 시간의 단축을 가능하도록 하여, 정밀도를 향상시키고 잔향 시간을 단축시키는 것이 가능하다.The ultrasonic sensor according to the present invention, by providing a step difference on the outer side of the bottom of the cylindrical case having the bottom of the spinning type ultrasonic sensor to form a protruding shape of the bottom vibration portion, by forming a wall thickness around the vibration surface thinner than the vibration surface In addition, improvements in high sound pressure, high sensitivity, shortening of reverberation time, and aftershock response are realized. In addition, the ultrasonic sensor according to the present invention enables shortening of the excitation time by improving the response, thereby improving accuracy and shortening the reverberation time.

초음파 센서, 방적형, 진동부, 잔향, 응답, 여진 Ultrasonic Sensor, Spinning, Vibration, Reverberation, Response, Excitation

Description

초음파 센서{AIR TRANSMISSION ULTRASONIC SENSOR}Ultrasonic Sensors {AIR TRANSMISSION ULTRASONIC SENSOR}

도 1은 본 고안의 실시 형태에 따른 초음파 센서의 단면도이다.1 is a cross-sectional view of an ultrasonic sensor according to an embodiment of the present invention.

도 2는 종래의 형태에 따른 초음파 센서의 단면도(플랫 저면)이다.2 is a cross-sectional view (flat bottom) of the ultrasonic sensor according to the conventional embodiment.

도 3은 종래의 또 다른 형태에 따른 초음파 센서의 단면도(코니칼 저면)이다.3 is a cross-sectional view (conical bottom) of an ultrasonic sensor according to still another conventional form.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1: 접착제1: glue

2: 압전 소자2: piezoelectric element

3: 흡음재3: sound absorbing material

4: 탄성 봉지제4: elastic sealant

5: 전극 인출선5: electrode leader

6: 저면을 갖는 통형의 케이스6: cylindrical case with bottom

본 고안은 초음파 센서에 관한 것으로, 더욱 상세하게는 초음파를 송신 및 수신하여 장애물 등의 검출을 실시하는 초음파 센서에 관한 것이다.The present invention relates to an ultrasonic sensor, and more particularly, to an ultrasonic sensor for transmitting and receiving ultrasonic waves to detect obstacles and the like.

종래의 방적형(防敵型) 초음파 센서의 단면도는 도 2 및 도 3에 도시된 바와 같다. 알루미늄 재질 등을 이용하여 완성되는 저면(底面)을 갖는 통형(筒狀)의 케이스(6)의 저면 내부에 압전소자(壓電素子: 2)를 접착제(1)로 접착하여, 압전 소자(2)의 저면을 갖는 통형의 케이스(6)와의 접착면 측의 반대 면과, 저면을 갖는 통형의 케이스(6)로부터 입출력 리드(전극 인출선: 5)를 납땜하여 끄집어 낸다. 압전 소자(2)와 저면을 갖는 통형의 케이스(6)는 전기적으로 접속되어 있으며 또한, 압전 소자(2)와 입출력 리드(5b) 및 저면을 갖는 통형의 케이스(6)와 입출력 리드(5a)는 전기적으로 접속되어 있다. 압전 소자의 표면에 발포 탄성재 등의 흡음재(吸音材: 3)를 형성하고, 다시 그 위에 실리콘 등의 탄성 봉지제(彈性 封止劑: 4)를 저면을 갖는 통형의 케이스(6) 내에 충전하여 구성한다. 저부 실린더 케이스(6)의 저면 외측은 플랫(flat: 도 2) 또는 코니칼(conical: 도 3) 형태 인 것이 일반적이다.A cross-sectional view of a conventional spinning ultrasonic sensor is as shown in FIGS. 2 and 3. A piezoelectric element 2 is bonded with an adhesive 1 to the inside of the bottom of a cylindrical case 6 having a bottom surface which is finished using an aluminum material or the like, and the piezoelectric element 2 The input / output lead (electrode lead wire 5) is soldered out from the surface opposite to the adhesive surface side of the cylindrical case 6 having the bottom face of the bottom face) and the cylindrical case 6 having the bottom face. The piezoelectric element 2 and the cylindrical casing 6 having the bottom are electrically connected, and the piezoelectric element 2 and the cylindrical casing 6 having the bottom and the input and output leads 5a and 5a. Is electrically connected. A sound absorbing material such as a foamed elastic material is formed on the surface of the piezoelectric element, and thereafter, an elastic encapsulant such as silicon is filled therein into the cylindrical case 6 having a bottom surface. To configure. The bottom outer side of the bottom cylinder case 6 is generally in the form of flat (Fig. 2) or conical (Fig. 3).

종래의 초음파 센서는 상기에서와 같이 구성되었으며, 초음파 센서에 의해 장애물의 접근 상황을 판단하여 회피 등의 대처를 실시하는 장치에 있어서, 보다 정확한 대처를 실시하기 위하여 초음파 센서의 검지(檢知) 거리 범위의 확대가 요구되고 있다. 따라서, 원거리의 검출을 실시하기 위하여, 송신음압(送信壓音)의 고음압화(高音壓化) 및 수신 감도의 향상과, 근거리의 검출을 실시하기 위하여, 잔향(殘響) 시간의 단축이, 과제가 되고 있다. 또한, 검지 정밀도를 향상시키기 위하여 적은 여진(勵振) 시간에 음파를 출력할 수 있는 것이 바람직하다. 종래의 저면을 갖는 통형의 케이스에 따른 방적형 초음파 센서는, 저면의 진동이 통부(筒部) 에 전해져, 초음파의 송신 출력 효율이 저하되고, 잔향 시간이 연장되며, 여진 응답이 악화되는 원인이 되었다. 저면을 코니칼 형상으로 한 경우에는, 진동부(振動部)와 통부를 잇는 얇은 부분의 면적이 적기 때문에, 진동 차단의 목적을 달성하기에 충분하지 않으며 또한, 불안정하다.The conventional ultrasonic sensor is configured as described above, and the ultrasonic sensor detects the approaching condition of the obstacle and performs the countermeasure such as avoidance, so that the detection distance of the ultrasonic sensor is more accurate to perform the countermeasure. Expansion of range is required. Therefore, in order to carry out the detection of a long distance, the high sound pressure of the transmission sound pressure and the improvement of the reception sensitivity, and the shortening of the reverberation time in order to perform the near field detection, It becomes a problem. In addition, in order to improve detection accuracy, it is desirable to be able to output sound waves in a small excitation time. In the conventional ultrasonic wave sensor according to a cylindrical case having a bottom face, vibration of the bottom face is transmitted to the tube part, and the transmission output efficiency of the ultrasonic wave is reduced, the reverberation time is extended, and the excitation response is deteriorated. It became. In the case where the bottom is conical, the area of the thin portion connecting the vibrating portion and the tube portion is small, which is not sufficient to attain the object of vibration isolation and is unstable.

본 고안은, 방적형 초음파 센서의 저면을 갖는 통형의 케이스의 저면 외측에 단(段)의 차이(差異)를 마련하여 저면의 진동부가 돌출된 형상으로 하여, 진동면 주위의 벽면 두께를 진동면보다 얇게 형성 함으로써, 고음압화, 고감도화, 잔향 시간의 단축 및 여진의 응답 등의 개선을 실현하는 것을 목적으로 한다.The present invention provides a step difference on the outside of the bottom of the cylindrical case having the bottom of the spinning type ultrasonic sensor so as to protrude the vibrating portion of the bottom, so that the wall thickness around the vibrating surface is thinner than the vibrating surface. By forming it, it aims at realizing improvement of high sound pressure reduction, high sensitivity, shortening of reverberation time, and response of an aftershock.

또한, 본 고안은 센서의 응답 개선은 여진 시간의 단축을 가능하도록 하여, 정밀도를 향상시키고 잔향 시간을 단축하는 것을 목적으로 한다.In addition, the present invention aims to improve the response of the sensor to shorten the excitation time, thereby improving the accuracy and shortening the reverberation time.

상기의 목적을 이루고 종래기술의 문제점을 해결하기 위하여 본 고안의 일측에 따른 저면(底面)을 갖는 통형(筒狀)의 케이스의 저면 내부에 압전 소자(壓電素子)를 접착하여 형성되는 초음파 센서에 있어서, 저면 근방의 통부(筒部) 벽면(도 1의 두께 b)을 저면 두께(도 1의 두께 a)와 동등하게 또는 보다 얇게 함으로써 장애물 검지(檢知) 거리 및 정밀도를 개선시킨 것을 특징으로 한다.In order to achieve the above object and to solve the problems of the prior art, an ultrasonic sensor formed by adhering a piezoelectric element to the bottom of a cylindrical case having a bottom according to one side of the present invention. The obstacle detection distance and accuracy are improved by making the cylindrical wall surface (thickness b of FIG. 1) near or lower than the bottom thickness (thickness a of FIG. 1) equal or thinner. It is done.

이하 첨부된 도면들 및 첨부된 도면들에 기재된 내용들을 참조하여 본 고안의 바람직한 실시예를 상세하게 설명하지만, 본 고안이 실시예들에 의해 제한되거나 한정되는 것은 아니다. 각 도면에 제시된 동일한 참조부호는 동일한 부재를 나 타낸다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments. Like reference numerals in the drawings denote like elements.

도 1은 본 고안의 실시 형태에 따른 초음파 센서의 단면도이다.1 is a cross-sectional view of an ultrasonic sensor according to an embodiment of the present invention.

도 1에 도시된 바와 같이, 알루미늄 재질 등을 이용하여 완성되는 저면을 갖는 통형의 케이스(6)의 저면 내부에 압전소자(2)를 접착제(1)로 접착하여, 압전 소자(2)의 저면을 갖는 통형의 케이스(6)와의 접착면 측의 반대 면과, 저면을 갖는 통형의 케이스(6)로부터 입출력 리드(전극 인출선: 5)를 납땜하여 끄집어 낸다. 압전 소자(2)와 저면을 갖는 통형의 케이스(6)는 전기적으로 접속되어 있으며 또한, 압전 소자(2)와 입출력 리드(5b) 및 저면을 갖는 통형의 케이스(6)와 입출력 리드(5a)는 전기적으로 접속되어 있다. 압전 소자의 표면에 발포 탄성재 등의 흡음재(吸音材: 3)를 형성하고, 다시 그 위에 실리콘 등의 탄성 봉지제(彈性 封止劑: 4)를 저면을 갖는 통형의 케이스(6) 내에 충전하여 구성한다.As shown in FIG. 1, the piezoelectric element 2 is adhered with an adhesive 1 inside the bottom of the cylindrical case 6 having a bottom surface which is completed by using an aluminum material or the like, and the bottom surface of the piezoelectric element 2 is adhered to. The input / output lead (electrode lead wire 5) is soldered out from the surface opposite to the side of the adhesive surface to the cylindrical case 6 having the inner side and the cylindrical case 6 having the bottom face. The piezoelectric element 2 and the cylindrical casing 6 having the bottom are electrically connected, and the piezoelectric element 2 and the cylindrical casing 6 having the bottom and the input and output leads 5a and 5a. Is electrically connected. A sound absorbing material such as a foamed elastic material is formed on the surface of the piezoelectric element, and thereafter, an elastic encapsulant such as silicon is filled therein into the cylindrical case 6 having a bottom surface. To configure.

저면을 갖는 통형의 케이스의 저면 외측에 단(段)의 차이(差異)를 마련하여 돌출부 측면의 두께를 저면의 두께와 같게 또는 보다 얇게(도 1에서의 두께: a≥b로 함) 형성한 구조의 초음파 센서이다.A step difference is provided on the outer side of the bottom of the cylindrical case having the bottom so that the thickness of the side surface of the protrusion is formed to be equal to or thinner than the thickness of the bottom (thickness in FIG. 1: a≥b). Ultrasonic sensor of the structure.

이상과 같이 본 고안은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 고안은 상기의 실시예에 한정되는 것은 아니며, 본 고안이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다. Although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

그러므로, 본 고안의 범위는 설명된 실시예에 국한되어 정해져서는 아니되며, 후술하는 실용신안등록 청구범위뿐 아니라 이 실용신안등록 청구범위와 균등한 것들에 의해 정해져야 한다.Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by equivalents of the utility model registration claims as well as the utility model registration claims described below.

본 고안에 따르면, 방적형 초음파 센서의 저면을 갖는 통형의 케이스의 저면 외측에 단의 차이(段差)를 마련하여 저면의 진동부가 돌출된 형상으로 하여, 초음파 센서의 고음압화, 고감도화 및 잔향 시간의 단축에 의하여 장애물의 검지 거리 범위를 확대 시킬 수 있다. 또한 여진 응답 특성의 개선에 의해 검지 정밀도 향상을 가능하게 한다.According to the present invention, a step difference is provided on the outer side of the bottom of the cylindrical case having the bottom of the spinning type ultrasonic sensor, and the vibration part of the bottom is protruded, so that the high sound pressure, high sensitivity, and reverberation time of the ultrasonic sensor are provided. By shortening the range of obstacle detection distance can be extended. In addition, the detection accuracy can be improved by improving the excitation response characteristic.

이상과 같이 본 고안은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 고안은 상기의 실시예에 한정되는 것은 아니며, 이는 본 고안이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다. 따라서, 본 고안 사상은 아래에 기재된 등록 실용신안등록 청구범위에 의해서만 파악되어야 하고, 이의 균등 또는 등가적 변형 모두는 본 고안 사상의 범주에 속한다고 할 것이다.Although the present invention as described above has been described by way of limited embodiments and drawings, the present invention is not limited to the above embodiments, which are those skilled in the art to which the present invention belongs, various modifications and Modifications are possible. Therefore, the present invention should be grasped only by the registered utility model registration claims described below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (2)

삭제delete 저면을 갖는 통형 케이스의 저면 내부에 압전 소자를 접착하여 형성되는 초음파 센서에 있어서,An ultrasonic sensor formed by bonding a piezoelectric element to the inside of the bottom of a cylindrical case having a bottom, 상기 통형 케이스의 통부 외측면에 단차를 형성하여 저면 근방의 통부 벽면의 두께를 저면 두께와 동등하게 또는 보다 얇게 하고, 상기 통부 내측면에 단차를 형성하여 상기 저면 근방의 통부 내부 직경이 상기 저면 근방 이외의 부분의 통부 내부 직경보다 작은 초음파 센서.Steps are formed on the tube outer side of the tubular case so that the thickness of the tube wall near the bottom is equal to or thinner than the bottom thickness, and steps are formed on the tube inner side so that the inside diameter of the tube near the bottom is near the bottom. Ultrasonic sensor smaller than the tube inner diameter of the non-part.
KR2020070004203U 2006-04-10 2007-03-14 Air transmission ultrasonic sensor KR200446261Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020070004203U KR200446261Y1 (en) 2006-04-10 2007-03-14 Air transmission ultrasonic sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP-P-2006-00108071 2006-04-10
KR2020070004203U KR200446261Y1 (en) 2006-04-10 2007-03-14 Air transmission ultrasonic sensor

Publications (2)

Publication Number Publication Date
KR20070001107U KR20070001107U (en) 2007-10-17
KR200446261Y1 true KR200446261Y1 (en) 2009-10-12

Family

ID=41558820

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020070004203U KR200446261Y1 (en) 2006-04-10 2007-03-14 Air transmission ultrasonic sensor

Country Status (1)

Country Link
KR (1) KR200446261Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101095848B1 (en) 2010-09-30 2011-12-21 주성대학산학협력단 Manufacturing method of ultrasound sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112799073A (en) * 2020-12-30 2021-05-14 成都英萨传感技术研究有限公司 Ultrasonic distance measuring sensor

Citations (4)

* 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
JP2002209294A (en) * 2001-01-10 2002-07-26 Murata Mfg Co Ltd Ultrasonic sensor, electronic unit provided with the same and vehicle rear sonar
JP2002228742A (en) 2001-01-31 2002-08-14 Ngk Spark Plug Co Ltd Ultrasonic sensor
JP2003179996A (en) * 2001-12-12 2003-06-27 Omron Corp Ultrasonic sensor

Patent Citations (4)

* 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
JP2002209294A (en) * 2001-01-10 2002-07-26 Murata Mfg Co Ltd Ultrasonic sensor, electronic unit provided with the same and vehicle rear sonar
JP2002228742A (en) 2001-01-31 2002-08-14 Ngk Spark Plug Co Ltd Ultrasonic sensor
JP2003179996A (en) * 2001-12-12 2003-06-27 Omron Corp Ultrasonic sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101095848B1 (en) 2010-09-30 2011-12-21 주성대학산학협력단 Manufacturing method of ultrasound sensor

Also Published As

Publication number Publication date
KR20070001107U (en) 2007-10-17

Similar Documents

Publication Publication Date Title
EP2076062B1 (en) Ultrasonic sensor
JP4591302B2 (en) Ultrasonic sensor mounting structure
KR100742711B1 (en) Air transmission ultrasonic sensor
JP2007282058A (en) Ultrasonic sensor
WO2007102460A1 (en) Ultrasonic sensor, and its manufacturing method
WO2011090201A1 (en) Ultrasonic vibration device
KR200446261Y1 (en) Air transmission ultrasonic sensor
JP6891293B2 (en) Acoustic transducer with piezoelectric ceramic transducer built into vibrating diaphragm
WO2020230358A1 (en) Piezoelectric device and acoustic transducer
JP2009055458A (en) Ultrasonic wave transmitting/receiving apparatus
JP6885839B2 (en) Ultrasonic sensor
JP7226154B2 (en) ultrasonic sensor
CN214471312U (en) High-performance piezoelectric MEMS ultrasonic sensor
JP2004343660A (en) Ultrasonic sensor
JP2020161888A (en) Ultrasonic sensor
CN217561728U (en) On-chip double-chip integrated time-of-flight sensor
CN218988820U (en) MEMS chip packaging structure and ultrasonic sensor with same
JPS63255681A (en) Ultrasonic vibrator
JP6210486B2 (en) Ultrasonic transducer
CN109596183B (en) Flow transducer
CN110545928B (en) Acoustic transducer having a transducer element with an electroactive polymer integrated in a vibratable membrane
US20210264888A1 (en) Flexural Ultrasonic Transducer
JP2002214008A (en) Ultrasonic sensor
KR200394887Y1 (en) Air transmission ultrasonic sensor
CN115321466A (en) Transmit-receive split type ultrasonic sensor module

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
J201 Request for trial against refusal decision

Free format text: TRIAL AGAINST DECISION OF REJECTION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL

AMND Amendment
E90F Notification of reason for final refusal
B701 Decision to grant
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20120822

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee