PROBE FOR MEASURING ACOUSTIC FIELDS OF HIGH INTENSITY

A probe for measuring acoustic fields of high intensity is comprised of an electroacoustic transducer system and an electronic conditioning system for the signal. The electro-acoustic transducer system is made with a piece of piezoelectric material. Its special design, letting the piezoelectric elem...

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Bibliographische Detailangaben
Hauptverfasser:	VARGAS HERNANDEZ YOLANDA, GAETE GARRETON LUIS, MONTOYA VITINI FAUSTO
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A probe for measuring acoustic fields of high intensity is comprised of an electroacoustic transducer system and an electronic conditioning system for the signal. The electro-acoustic transducer system is made with a piece of piezoelectric material. Its special design, letting the piezoelectric element in floating conditions, enables the systems to act both as mechanical support and electromagnetic screen of the system. The active element of the probe floats in a viscous and dispersive elastic substance which is highly attenuating. This confers to the element excellent characteristics of frequency response with the disclosed embodiment. Furthermore, the system of electric connexion of the probe makes possible to have the earth connexion at one or a plurality of points of the device. The electronic signal conditionning system effects an appropriate adaptation of impedance and signal level, between the piezoelectric element and the connexion screen cable. The disclosed device applies to the study of high intensity acoustic fields in the following technological areas: oceanography, determination of acoustic fields: sonoreactors, evaluation and optimalisation acoutics processes in gases, measuring and control hydroacoustics, as calibrating standard instrumentation, as detector standard and mining. SONDA PARA MEDICION DE CAMPOS ACUSTICOS DE ALTA INTENSIDAD. UNA SONDA PARA MEDICION DE CAMPOS ACUSTICOS DE ALTA INTENSIDAD, CARACTERIZADA POR ESTAR COMPUESTA POR UN SISTEMA ELECTROACUSTICO DE ACONDICIONAMIENTO DE SEÑAL. EL SISTEMA ELECTROACUSTICO DE TRANSDUCCION ESTA REALIZADO CON UN TROZO DE MATERIAL PIEZOELECTRICO. EL ELEMENTO PIEZOELECTRICO ESTA MONTADO MECANICAMENTE FLOTANTE, SIENDO LOS SISTEMAS DE SOPORTE MECANICO A LA VEZ PANTALLA ELECTROMAGNETICA DEL SISTEMA. EL ELEMENTO ACTIVO DE LA SONDA FLOTA EN UNA SUSTANCIA ELASTICA VISCOSA Y DISPERSIVA, ALTAMENTE ATENUADORA, PARA FAVORECER UNA RESPUESTA EXTENDIDA EN FRECUENCIA. EL SISTEMA ELECTRONICO DE ACONDICIONAMIENTO DE SEÑAL TIENE UNA ELEVADA IMPEDANCIA DE ENTRADA, QUE FAVORECE LA CAPTACION DE LAS SEÑALES DEL ELEMENTO PIEZOELECTRICO. Y UNA BAJA IMPEDANCIA DE SALIDA, QUE EVITA REFLEXIONES DE LA SEÑAL EN LA TRANSICION PREAMPLIFICADOR-CABLE APANTALLADOY CONSERVA LA RESPUESTA EN FRECUENCIA.