KR101093002B1 - Sonic transducer improved in temperature sensing unit - Google Patents

Sonic transducer improved in temperature sensing unit Download PDF

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KR101093002B1
KR101093002B1 KR1020100131550A KR20100131550A KR101093002B1 KR 101093002 B1 KR101093002 B1 KR 101093002B1 KR 1020100131550 A KR1020100131550 A KR 1020100131550A KR 20100131550 A KR20100131550 A KR 20100131550A KR 101093002 B1 KR101093002 B1 KR 101093002B1
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South Korea
Prior art keywords
sound wave
temperature sensor
sound
transducer
vibrator
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KR1020100131550A
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Korean (ko)
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최두원
마카로프 블라드미르
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주식회사 이오브이울트라소닉스
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    • 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
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: A sound wave transducer with an improved temperature sensing part is provided to prevent heat in a temperature sensor from being generated by preventing a transmission pulse with wide amplitude from passing through the temperature sensor in a sound wave transducer. CONSTITUTION: A sound wave transducer(100) comprises a sound wave vibrator(X1) which generates a sound wave from a transmission pulse, a temperature sensor(TR1) which is the temperature sensing part connected to the sound wave vibrator, and a sensor protection element(101) which is connected to the sound wave vibrator and the temperature sensor. The sound wave vibrator offers a converting function between sound energy and electrical energy. The sound wave vibrator includes the function that generates the sound wave from the transmission pulse. The sound wave vibrator is composed of a piezo ceramic ultrasonic wave vibration element with an ultrasonic wave generating function. A sound wave transducer is connected to the control module(200) of a sound wave detection system. The control module of the sound wave detection system comprises a standard resistance(R2) for measuring the resistance of a temperature sensor, a capacitor(C2), an A/D converter(201), and the MCU(Main Control Unit)(203) including the function of calculating the resistance of the temperature sensor.

Description

온도 감지부가 개선된 음파 트랜스듀서{SONIC TRANSDUCER IMPROVED IN TEMPERATURE SENSING UNIT}SONIC TRANSDUCER IMPROVED IN TEMPERATURE SENSING UNIT}

본 발명은 음파 트랜스듀서에 관한 것으로서, 더욱 상세하게는 음속에 영향을 주는 온도를 측정하기 위한 온도 감지부를 구비한 음파 트랜스듀서에 관한 것이다.The present invention relates to a sound wave transducer, and more particularly, to a sound wave transducer having a temperature sensing unit for measuring the temperature affecting the sound velocity.

음파 트랜스듀서는 전기적 송신 펄스를 입력받아 음파를 발생시키는 기능을 제공하는 장치로서, 통상적으로 도 1에 도시된 바와 같이 음파 탐지 시스템에 적용된다.A sound wave transducer is a device that provides a function of generating sound waves by receiving an electrical transmission pulse, and is typically applied to a sound wave detection system as shown in FIG. 1.

도 1을 참조하면, 음파 트랜스듀서(10)는 음파 탐지 시스템의 제어모듈(20)에 연결되며, 음파 진동자(X1)와, 음파 진동자(X1)에서 발생하는 음파의 음속에 영향을 주는 주위 온도를 센싱하기 위해 음파 진동자(X1)에 병렬연결된 써미스터(Thermistor)(TR1)를 포함한다.Referring to Figure 1, the sound wave transducer 10 is connected to the control module 20 of the sound wave detection system, the ambient temperature affecting the sound velocity of the sound wave generated from the sound wave vibrator (X1), sound wave vibrator (X1) It includes a thermistor (TR1) connected in parallel to the acoustic wave oscillator (X1).

음파 탐지 시스템의 제어모듈(20)은 써미스터(TR1)의 저항을 측정하기 위한 기준저항(R2) 및 캐패시터(C2)와, 캐패시터(C2) 양단의 전압(VC2)을 디지털 신호로 변환하는 A/D 컨버터(21)와, 아래의 수학식 1을 적용하여 써미스터(TR1)의 저항(RTR1)을 계산하는 MCU(Micro Controller Unit)(23)를 구비한다. 수학식 1에서, Vref 는 기준전압, RT1 은 트랜스포머(T1)의 직류 저항을 나타낸다.The control module 20 of the sound wave detection system A converts the reference resistor R2 and the capacitor C2 for measuring the resistance of the thermistor TR1 and the voltage V C2 across the capacitor C2 into a digital signal. The microcontroller unit (MCU) 23 which calculates the resistance R TR1 of the thermistor TR1 by applying the following Equation 1 is provided. In Equation 1, V ref Is the reference voltage, R T1 Represents the direct current resistance of the transformer T1.

Figure 112010084407121-pat00001
Figure 112010084407121-pat00001

MCU(23)는 산출된 써미스터(TR1)의 저항(RTR1)으로부터 음파 트랜스듀서(10) 주위의 온도를 알아내고, 이로부터 음파에 대한 음속 데이터를 세팅(Setting)한다.The MCU 23 finds the temperature around the sound wave transducer 10 from the calculated resistance R TR1 of the thermistor TR1, and sets the sound velocity data for the sound wave therefrom.

또한, MCU(23)는 전력증폭기(22)를 제어함으로써 트랜스포머(T1)를 통해 음파 트랜스듀서(10)에 송신 펄스를 가하는 기능을 수행한다. 이에 따라, 음파 트랜스듀서(10)에서 발생하는 음파는 소정의 타겟 물체에 의해 반사된 후 다시 음파 트랜스듀서(10)에 수신되고, MCU(23)에서는 수신된 반사파로부터 산출되는 음파의 전달시간(t)과, 음속(C)을 아래의 수학식 2에 적용하여 타겟 물체까지의 거리(D)를 측정한다.In addition, the MCU 23 performs a function of applying a transmission pulse to the sound wave transducer 10 through the transformer T1 by controlling the power amplifier 22. Accordingly, the sound waves generated by the sound wave transducer 10 are received by the sound wave transducer 10 after being reflected by a predetermined target object, and the transfer time of sound waves calculated from the received reflected waves is received by the MCU 23. t) and the sound velocity C are applied to Equation 2 below to measure the distance D to the target object.

Figure 112010084407121-pat00002
Figure 112010084407121-pat00002

음파를 이용한 탐지 시스템에 있어서 음파 트랜스듀서 주위의 온도를 고려하는 기술은 예컨대, 대한민국 공개특허공보 제2001-0018164호, 공개특허공보 제1999-0054190호에 개시되어 있다.Techniques for considering the temperature around the sound transducer in a detection system using sound waves are disclosed, for example, in Korean Patent Laid-Open Publication No. 2001-0018164 and Korean Patent Laid-Open Publication No. 1999-0054190.

공개특허공보 제2001-0018164호는 물탱크로부터 수중 초음파 센서기구로 공급하는 배관에 온도 센서를 설치하고 잡음 특성에 강한 신경 회로망을 구성하여 물체까지의 거리를 측정하는 수중 초음파 거리측정장치를 개시하고 있다.Korean Patent Laid-Open Publication No. 2001-0018164 discloses an underwater ultrasonic distance measuring apparatus for measuring a distance to an object by installing a temperature sensor in a pipe supplied from a water tank to an underwater ultrasonic sensor mechanism and constructing a neural network resistant to noise characteristics. have.

공개특허공보 제1999-0054190호는 온도 감지센서와, 기준전압발생부와, 전압증폭출력부와, 두 개의 연산증폭기를 포함하여 음향탐지기 주변의 해수온도를 감지하는 수중음파 탐지 시스템의 온도감지부를 개시하고 있다.Korean Patent Laid-Open Publication No. 1999-0054190 includes a temperature sensor, a reference voltage generator, a voltage amplification output unit, and two operational amplifiers, which detect a seawater temperature around a sound detector. It is starting.

그런데, 종래의 음파 탐지 시스템은 음파를 발생시키기 위하여 제어모듈의 트랜스포머로부터 음파 트랜스듀서로 전달되는 매우 큰 진폭(Amplitude)의 송신 펄스에 의해 써미스터가 발열되는 취약점이 있다. 써미스터의 발열시에는 MCU가 음파의 음속을 정확하게 계산해내지 못하게 되므로 결국 거리 측정값에 오차가 발생하게 된다.By the way, the conventional sound wave detection system has a vulnerability that the thermistor is generated by the transmit pulse of very large amplitude (Amplitude) transmitted from the transformer of the control module to the sound wave transducer to generate sound waves. When the thermistor generates heat, the MCU will not be able to calculate the sound velocity of the sound waves accurately, resulting in an error in the distance measurement.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창안된 것으로서, 송신 펄스에 의한 온도센서의 발열 문제를 해소할 수 있는 구조를 가진 음파 트랜스듀서를 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a sound wave transducer having a structure that can solve the heat generation problem of the temperature sensor by the transmission pulse.

상기와 같은 목적을 달성하기 위해 본 발명은 전기 에너지와 음향 에너지 간의 변환기능을 제공하는 음파 진동자와, 상기 음파 진동자 주위의 온도 센싱을 위해 상기 음파 진동자에 연결된 온도센서를 포함하고, 상기 온도센서에 연결되어, 상기 음파 진동자에 가해지는 송신 펄스가 상기 온도센서를 통과하지 못하도록 상기 송신 펄스를 필터링하는 센서 보호수단;을 구비한 것을 특징으로 하는 음파 트랜스듀서를 제공한다.In order to achieve the above object, the present invention includes a sound wave vibrator providing a conversion function between electrical energy and sound energy, and a temperature sensor connected to the sound wave vibrator for sensing the temperature around the sound wave vibrator, And sensor protection means for filtering the transmission pulse so that the transmission pulse applied to the sound wave vibrator does not pass through the temperature sensor.

상기 센서 보호수단은 상기 음파 진동자에 병렬연결된 LC 필터인 것이 바람직하다.The sensor protection means is preferably an LC filter connected in parallel to the sound wave oscillator.

바람직하게, 상기 온도센서로는 써미스터가 채용되고, 상기 LC 필터에 포함된 캐패시터의 양단은 상기 온도센서에 병렬연결될 수 있다.Preferably, a thermistor is employed as the temperature sensor, and both ends of the capacitor included in the LC filter may be connected in parallel to the temperature sensor.

바람직하게, 상기 음파 진동자로는 압전세라믹 초음파 진동자가 채용될 수 있다.Preferably, a piezoelectric ceramic ultrasonic vibrator may be employed as the acoustic wave vibrator.

본 발명에 따르면 음파 탐지 시스템의 트랜스포머에서 발생하는 매우 큰 진폭의 송신 펄스가 음파 트랜스듀서 내의 온도센서를 통과하지 못하도록 함으로써 상기 온도센서의 발열현상을 방지할 수 있다. 따라서, 음파 트랜스듀서 주변의 온도를 정확히 측정하여 음속 데이터 세팅에 반영함으로써 음파를 이용한 거리 측정을 정확하게 수행할 수 있는 이점이 있다.According to the present invention, a heat generation phenomenon of the temperature sensor can be prevented by preventing a transmission pulse of a very large amplitude generated from a transformer of the sound wave detection system from passing through the temperature sensor in the sound wave transducer. Therefore, there is an advantage that the distance measurement using the sound wave can be accurately performed by accurately measuring the temperature around the sound wave transducer and reflecting it in the sound velocity data setting.

이러한 본 발명은 온도가 민감하게 변화하는 환경에서 사용되는 음파 탐지 시스템에 매우 유용하게 적용될 수 있다.The present invention can be very usefully applied to a sound wave detection system used in an environment where temperature changes sensitively.

본 명세서에 첨부되는 다음의 도면들은 본 발명의 바람직한 실시예를 예시하는 것이며, 후술되는 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어 해석되어서는 아니된다.
도 1은 종래기술에 따른 음파 트랜스듀서의 구성을 도시한 회로도,
도 2는 본 발명의 바람직한 실시예에 따른 음파 트랜스듀서의 구성을 도시한 회로도이다.BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is a circuit diagram showing the configuration of a sound wave transducer according to the prior art,
2 is a circuit diagram showing the configuration of a sound wave transducer according to a preferred embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

도 2는 본 발명의 바람직한 실시예에 따른 음파 트랜스듀서의 구성을 도시한 회로도이다.2 is a circuit diagram showing the configuration of a sound wave transducer according to a preferred embodiment of the present invention.

도 2를 참조하면, 본 발명의 바람직한 실시예에 따른 음파 트랜스듀서(100)는 송신 펄스를 입력받아 음파를 발생시키는 음파 진동자(X1)와, 음파 진동자(X1)에 연결된 온도 감지부인 온도센서(TR1)와, 음파 진동자(X1) 및 온도센서(TR1)에 연결되어 송신 펄스를 필터링하는 센서 보호수단(101)을 포함한다.2, the sound wave transducer 100 according to a preferred embodiment of the present invention is a sound wave oscillator (X1) for generating a sound wave receiving a transmission pulse, and a temperature sensor that is a temperature sensor connected to the sound wave vibrator (X1) TR1), and sensor protection means 101 connected to the acoustic wave oscillator X1 and the temperature sensor TR1 to filter the transmission pulse.

음파 진동자(X1)는 전기 에너지와 음향 에너지 간의 변환기능을 제공한다. 구체적으로, 음파 진동자(X1)는 송신 펄스를 입력받아 음파를 발생시키는 기능을 포함한다. 필요에 따라 음파 진동자(X1)는 음파 트랜스듀서(100)의 외부로부터 수신되는 음파를 감지하여 전기 에너지로 변환하는 기능도 포함하도록 구성될 수 있다. 이러한 음파 진동자(X1)는 초음파 발생기능을 갖는 압전세라믹 초음파 진동소자에 의해 구성되는 것이 바람직하다.The sonic vibrator X1 provides a conversion function between electrical energy and acoustic energy. Specifically, the acoustic wave oscillator X1 includes a function of receiving a transmission pulse and generating sound waves. If necessary, the sound wave oscillator X1 may also be configured to include a function of detecting sound waves received from the outside of the sound wave transducer 100 and converting them into electrical energy. The sound wave oscillator X1 is preferably constituted by a piezoceramic ultrasonic vibration device having an ultrasonic wave generation function.

온도센서(TR1)는 음파 진동자(X1)에 연결되어 음파 진동자(X1)가 놓인 환경의 온도, 예컨대 음파 진동자(X1) 주변의 수중 온도를 센싱한다. 바람직하게, 온도센서(TR1)로는 음파 진동자(X1)에 병렬연결된 써미스터가 채용될 수 있다.The temperature sensor TR1 is connected to the sound wave vibrator X1 and senses the temperature of the environment in which the sound wave vibrator X1 is placed, for example, the underwater temperature around the sound wave vibrator X1. Preferably, the temperature sensor TR1 may be a thermistor connected in parallel to the acoustic wave oscillator X1.

센서 보호수단(101)은 온도센서(TR1)에 연결되어, 음파 진동자(X1)에 가해지는 송신 펄스가 온도센서(TR1)를 통과하지 못하도록 상기 송신 펄스를 필터링하는 기능을 제공한다. 센서 보호수단(101)은 음파 진동자(X1)에 대하여 병렬연결된 LC 필터 구조로 제공되는 것이 바람직하다. 보다 구체적으로, LC 필터는 유도성분을 제공하는 인덕터(Inductor)(L1)와 용량성분을 제공하는 캐패시터(C1)가 상호 직렬연결된 어셈블리가 음파 진동자(X1)에 대하여 병렬연결된 구조를 갖는다. 여기서, 캐패시터(C1)의 양단은 온도센서(TR1)의 양단에 병렬연결되는 것이 바람직하다. 또한, 인덕터(L1)의 임피던스(Impedance)는 상대적으로 매우 크고, 인덕터(L1)와 캐패시터(C1)에 의한 공진주파수는 음파 탐지 시스템 전체의 작동 주파수보다 훨씬 작은 것이 바람직하다.The sensor protection means 101 is connected to the temperature sensor TR1 and provides a function of filtering the transmission pulse so that the transmission pulse applied to the sound wave oscillator X1 does not pass through the temperature sensor TR1. Sensor protection means 101 is preferably provided in an LC filter structure connected in parallel to the sound wave oscillator (X1). More specifically, the LC filter has a structure in which an assembly in which an inductor L1 providing an inductive component and a capacitor C1 providing a capacitive component are connected in series with each other is paralleled to the acoustic wave oscillator X1. Here, the both ends of the capacitor (C1) is preferably connected in parallel to both ends of the temperature sensor (TR1). In addition, the impedance of the inductor L1 is relatively very large, and the resonance frequency of the inductor L1 and the capacitor C1 is preferably much smaller than the operating frequency of the entire sound wave detection system.

상기와 같은 구조에 따르면 음파 탐지 시스템의 제어모듈(200)로부터 제공되는 송신 펄스가 온도센서(TR1)를 통과하지 못하고 음파 진동자(X1)에만 가해지므로 온도센서(TR1)의 온도 상승을 방지할 수 있다.According to the above structure, since the transmission pulse provided from the control module 200 of the sound wave detection system does not pass through the temperature sensor TR1 and is applied only to the sound wave oscillator X1, the temperature rise of the temperature sensor TR1 can be prevented. have.

음파 트랜스듀서(100)는 음파 탐지 시스템의 제어모듈(200)에 연결된다. 음파 탐지 시스템의 제어모듈(200)은 온도센서(TR1)의 저항을 측정하기 위한 기준저항(R2) 및 캐패시터(C2)와, 캐패시터(C2) 양단의 전압을 디지털 신호로 변환하는 A/D 컨버터(201)와, 온도센서(TR1)의 저항을 계산하는 기능을 포함하는 MCU(203)를 구비한다.The sound wave transducer 100 is connected to the control module 200 of the sound wave detection system. The control module 200 of the sound wave detection system is an A / D converter for converting the voltage between the reference resistor R2 and the capacitor C2 and the capacitor C2 to measure the resistance of the temperature sensor TR1 into a digital signal. 201 and the MCU 203 including the function of calculating the resistance of the temperature sensor TR1.

MCU(203)는 온도센서(TR1)의 저항을 계산하여 음파 트랜스듀서(100) 주위의 온도를 알아내고, 이로부터 음파에 대한 음속 데이터를 세팅한다. 또한, MCU(203)는 전력증폭기(202)를 제어함으로써 트랜스포머(T1)를 통해 음파 트랜스듀서(100)에 송신 펄스를 가하는 기능을 수행한다. 이에 따라, 음파 트랜스듀서(100)에서 발생하는 음파는 소정의 타겟 물체에 의해 반사된 후 다시 음파 트랜스듀서(100)에 수신되고, MCU(203)에서는 수신된 반사파로부터 산출되는 음파의 전달시간과, 음속을 이용하여 타겟 물체까지의 거리를 측정한다.The MCU 203 calculates the resistance of the temperature sensor TR1 to find out the temperature around the sound wave transducer 100, and sets sound velocity data for sound waves therefrom. In addition, the MCU 203 controls the power amplifier 202 to apply a transmission pulse to the sound wave transducer 100 through the transformer T1. Accordingly, the sound wave generated by the sound wave transducer 100 is received by the sound wave transducer 100 after being reflected by a predetermined target object, and the transfer time of the sound wave calculated from the received reflected wave in the MCU 203. Using the sound velocity, measure the distance to the target object.

상술한 바와 같이 본 발명에 따라 제공되는 음파 트랜스듀서(100)는 수중에서 음파를 이용하여 물체를 탐지하는 과정에서 음파 트랜스듀서(100)에 구비된 온도센서(TR1)를 보호할 수 있는 기능을 갖는다. 즉, 음파 탐지 시스템의 트랜스포머(T1)로부터 음파 트랜스듀서(100)로 전달되는 매우 큰 진폭의 송신 펄스는 센서 보호수단(101)에 의해 온도센서(TR1)를 통과하지 못하고 음파 진동자(X1)에만 가해지게 되므로 온도센서(TR1)의 발열이 효과적으로 방지될 수 있다. 이에 따라, 음파 탐지 시스템의 MCU(203)에서는 정확한 수중 온도를 음속 데이터 세팅에 반영하여 거리 측정 기능을 정확하게 수행할 수 있다.As described above, the sound wave transducer 100 provided according to the present invention has a function of protecting the temperature sensor TR1 provided in the sound wave transducer 100 in the process of detecting an object using sound waves in water. Have That is, a very large amplitude transmission pulse transmitted from the transformer T1 of the sound wave detection system to the sound wave transducer 100 does not pass through the temperature sensor TR1 by the sensor protecting means 101 and is only used for the sound wave vibrator X1. Since heat is applied, heat generation of the temperature sensor TR1 can be effectively prevented. Accordingly, the MCU 203 of the sound wave detection system can accurately perform the distance measurement function by reflecting the accurate underwater temperature in the sound velocity data setting.

이상에서 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

100: 음파 트랜스듀서 101: 센서 보호수단
200: 제어모듈 201: A/D 컨버터
202: 전력증폭기 203: MCU100: sound wave transducer 101: sensor protection means
200: control module 201: A / D converter
202: power amplifier 203: MCU

Claims (4)

전기 에너지와 음향 에너지 간의 변환기능을 제공하는 음파 진동자와, 상기 음파 진동자 주위의 온도 센싱을 위해 상기 음파 진동자에 연결된 온도센서를 포함하는 음파 트랜스듀서에 있어서,
상기 온도센서에 연결되어, 상기 음파 진동자에 가해지는 송신 펄스가 상기 온도센서를 통과하지 못하도록 상기 송신 펄스를 필터링하는 센서 보호수단;을 구비한 것을 특징으로 하는 음파 트랜스듀서.A sound wave transducer comprising a sound wave oscillator providing a function of converting electrical energy and sound energy, and a temperature sensor connected to the sound wave oscillator for sensing a temperature around the sound wave oscillator,
And sensor protection means connected to the temperature sensor and filtering the transmission pulse so that the transmission pulse applied to the sound wave vibrator does not pass through the temperature sensor. 제1항에 있어서,
상기 센서 보호수단은 상기 음파 진동자에 병렬연결된 LC 필터인 것을 특징으로 하는 음파 트랜스듀서.The method of claim 1,
The sensor protection means is an acoustic wave transducer, characterized in that the LC filter connected in parallel to the acoustic wave oscillator. 제2항에 있어서,
상기 온도센서는 써미스터이고,
상기 LC 필터에 포함된 캐패시터의 양단이 상기 온도센서에 병렬연결된 것을 특징으로 하는 음파 트랜스듀서.The method of claim 2,
The temperature sensor is a thermistor,
A sound wave transducer, characterized in that both ends of the capacitor included in the LC filter is connected in parallel to the temperature sensor. 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 음파 진동자는 압전세라믹 초음파 진동자인 것을 특징으로 하는 음파 트랜스듀서.4. The method according to any one of claims 1 to 3,
The sound wave oscillator is a piezoceramic ultrasonic transducer.
KR1020100131550A 2010-12-21 2010-12-21 Sonic transducer improved in temperature sensing unit KR101093002B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106911309A (en) * 2015-12-23 2017-06-30 中国科学院深圳先进技术研究院 It is applied to the power amplifier and HIFU equipment of HIFU equipment

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Publication number Priority date Publication date Assignee Title
JP2006346105A (en) 2005-06-15 2006-12-28 Toshiba Corp Ultrasonic probe and ultrasonic diagnostic apparatus
JP2009085902A (en) 2007-10-03 2009-04-23 Ricoh Elemex Corp Ultrasonic transducer and ultrasonic flowmeter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006346105A (en) 2005-06-15 2006-12-28 Toshiba Corp Ultrasonic probe and ultrasonic diagnostic apparatus
JP2009085902A (en) 2007-10-03 2009-04-23 Ricoh Elemex Corp Ultrasonic transducer and ultrasonic flowmeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106911309A (en) * 2015-12-23 2017-06-30 中国科学院深圳先进技术研究院 It is applied to the power amplifier and HIFU equipment of HIFU equipment

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