EP0266485A3 - Electromechanical horn with excitation of its acoustic diaphragm controlled electronically by sensors which measure its resonance frequency - Google Patents

Electromechanical horn with excitation of its acoustic diaphragm controlled electronically by sensors which measure its resonance frequency Download PDF

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Publication number
EP0266485A3
EP0266485A3 EP87107567A EP87107567A EP0266485A3 EP 0266485 A3 EP0266485 A3 EP 0266485A3 EP 87107567 A EP87107567 A EP 87107567A EP 87107567 A EP87107567 A EP 87107567A EP 0266485 A3 EP0266485 A3 EP 0266485A3
Authority
EP
European Patent Office
Prior art keywords
resonance frequency
excitation
sensors
measure
acoustic diaphragm
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.)
Withdrawn
Application number
EP87107567A
Other languages
German (de)
French (fr)
Other versions
EP0266485A2 (en
Inventor
Tullio Giorgioni
Bruno Cortinovis
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.)
ELECTRONSYSTEM SpA
Original Assignee
ELECTRONSYSTEM SpA
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 ELECTRONSYSTEM SpA filed Critical ELECTRONSYSTEM SpA
Publication of EP0266485A2 publication Critical patent/EP0266485A2/en
Publication of EP0266485A3 publication Critical patent/EP0266485A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • 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
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/52—Electrodynamic transducer
    • B06B2201/53—Electrodynamic transducer with vibrating magnet or coil

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

In this electromechanical horn (T), which is provided with an acoustic diaphragm (5) able to undergo movements induced in it by variable magnetic fields generated by an electromagnet (3), the electromagnet (3) which operates the diaphragm (5) is excited by frequencies generated by an electronic oscillator which are based on the value of the maximum diaphragm resonance frequency measured by a specific sensor (7).
EP87107567A 1986-11-05 1987-05-24 Electromechanical horn with excitation of its acoustic diaphragm controlled electronically by sensors which measure its resonance frequency Withdrawn EP0266485A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02932/86A IT1205507B (en) 1986-11-05 1986-11-05 ELECTROMECHANICAL TRUMPET WITH EXCITATION OF THE SOUND MEMBRANE ELECTRONICALLY PILOTED BY DETECTORS OF ITS FREQUENCY OF RESONANCE
IT293286 1986-11-05

Publications (2)

Publication Number Publication Date
EP0266485A2 EP0266485A2 (en) 1988-05-11
EP0266485A3 true EP0266485A3 (en) 1988-11-02

Family

ID=11104011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107567A Withdrawn EP0266485A3 (en) 1986-11-05 1987-05-24 Electromechanical horn with excitation of its acoustic diaphragm controlled electronically by sensors which measure its resonance frequency

Country Status (3)

Country Link
EP (1) EP0266485A3 (en)
JP (1) JPS63124095A (en)
IT (1) IT1205507B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461896B (en) * 1988-06-29 1990-04-09 Infrasonik Ab LOW FREQUENCY SOUND GENERATOR GRILL
IT1228767B (en) * 1989-03-29 1991-07-03 Electronsystem Spa ELECTRONICALLY PILOTED HORN FOR MOTOR VEHICLES.
EP1008394A4 (en) * 1998-06-29 2005-08-24 Matsushita Electric Ind Co Ltd Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion
EP1383108A1 (en) * 2002-07-19 2004-01-21 Mark Thomas Coward A horn for generating a sound
AU2003279535A1 (en) * 2003-10-09 2005-04-21 Fabbrica Italiana Accumulatori Motocarri Montecchio F.I.A.M.M. S.P.A. Audible warning device and operating method
DE102005015554A1 (en) * 2005-04-04 2006-10-05 Werma Signaltechnik Gmbh + Co. Kg Signaling device e.g. horn, for use with technical device e.g. machine, has sensor unit to detect resonance vibration of acoustic signal generator e.g. piezoelectric plate, and modulation unit to modulate carrier wave of generator
JP2011257685A (en) * 2010-06-11 2011-12-22 Hamanako Denso Co Ltd Alarm device
DE102013221182B4 (en) * 2013-10-18 2021-05-06 Volkswagen Aktiengesellschaft Acoustic signaling system and arrangement and method for operating an acoustic signaling system for a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771772A (en) * 1971-05-15 1973-11-13 K Honda Ultrasonic cleaning device
DE2448685A1 (en) * 1974-10-12 1976-04-22 Bosch Gmbh Robert Electro-magnetic signal horn with armature attached to membrane - ferro-magnetic element on armature in inductive coupling path
US4395665A (en) * 1981-06-09 1983-07-26 The Arthur G. Russell Company, Incorporated Control system for vibrating a member at its resonant frequency
DE3442483A1 (en) * 1984-11-22 1986-05-22 Robert Bosch Gmbh, 7000 Stuttgart Method for solid-state control of the operating frequency of the oscillating armature of an electromagnetic warning horn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771772A (en) * 1971-05-15 1973-11-13 K Honda Ultrasonic cleaning device
DE2448685A1 (en) * 1974-10-12 1976-04-22 Bosch Gmbh Robert Electro-magnetic signal horn with armature attached to membrane - ferro-magnetic element on armature in inductive coupling path
US4395665A (en) * 1981-06-09 1983-07-26 The Arthur G. Russell Company, Incorporated Control system for vibrating a member at its resonant frequency
DE3442483A1 (en) * 1984-11-22 1986-05-22 Robert Bosch Gmbh, 7000 Stuttgart Method for solid-state control of the operating frequency of the oscillating armature of an electromagnetic warning horn

Also Published As

Publication number Publication date
EP0266485A2 (en) 1988-05-11
JPS63124095A (en) 1988-05-27
IT1205507B (en) 1989-03-23
IT8602932A0 (en) 1986-11-05

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Inventor name: CORTINOVIS, BRUNO

Inventor name: GIORGIONI, TULLIO