WO2002060215A3 - Wireless battery-less microphone - Google Patents

Wireless battery-less microphone Download PDF

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Publication number
WO2002060215A3
WO2002060215A3 PCT/US2002/001497 US0201497W WO02060215A3 WO 2002060215 A3 WO2002060215 A3 WO 2002060215A3 US 0201497 W US0201497 W US 0201497W WO 02060215 A3 WO02060215 A3 WO 02060215A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
circuit
microphone
reader
passive
Prior art date
Application number
PCT/US2002/001497
Other languages
French (fr)
Other versions
WO2002060215A2 (en
Inventor
Haruhiko H Asada
Original Assignee
Massachusetts Inst Technology
Haruhiko H Asada
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 Massachusetts Inst Technology, Haruhiko H Asada filed Critical Massachusetts Inst Technology
Publication of WO2002060215A2 publication Critical patent/WO2002060215A2/en
Publication of WO2002060215A3 publication Critical patent/WO2002060215A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Abstract

A passive microphone (110), which is wireless and battery-less, contains a resonant sensor circuit (112) and a reactive sensor (114) sensitive to vibration may be remotely coupled to a receiver circuit (130). The sensor (114) is a passive condenser microphone wherein vibration of the diaphragm alters the condenser capacitance and the resonant frequency of the resonant sensor circuit (112). The passive microphone is directly or indirectly attached to the person and is coupled to a remotely disposed reader (120) carried by the person and then is transmitted to a remote receiver (130). The passive microphone sensor (114) exposed to vibrations alters the resonance frequency of a sensor circuit (112) containing the sensor (114). Wireless coupling of the sensor circuit (112) to a reader circuit (122) changes the impedance of the reader circuit (122) that is detectable upon sequentially exciting the reader circuit (122) over a range of frequencies that includes the resonance frequency.
PCT/US2002/001497 2001-01-26 2002-01-17 Wireless battery-less microphone WO2002060215A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26453001P 2001-01-26 2001-01-26
US60/264,530 2001-01-26

Publications (2)

Publication Number Publication Date
WO2002060215A2 WO2002060215A2 (en) 2002-08-01
WO2002060215A3 true WO2002060215A3 (en) 2003-04-17

Family

ID=23006462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/001497 WO2002060215A2 (en) 2001-01-26 2002-01-17 Wireless battery-less microphone

Country Status (1)

Country Link
WO (1) WO2002060215A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9124120B2 (en) 2007-06-11 2015-09-01 Qualcomm Incorporated Wireless power system and proximity effects
US9130602B2 (en) 2006-01-18 2015-09-08 Qualcomm Incorporated Method and apparatus for delivering energy to an electrical or electronic device via a wireless link
US9601267B2 (en) 2013-07-03 2017-03-21 Qualcomm Incorporated Wireless power transmitter with a plurality of magnetic oscillators

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051635A2 (en) * 2006-08-07 2009-04-29 Deepbreeze Ltd. Microphone matrix for recording body sounds
US9774086B2 (en) 2007-03-02 2017-09-26 Qualcomm Incorporated Wireless power apparatus and methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561430A (en) * 1967-07-20 1971-02-09 William W Filler Jr Fetal heartbeat rate instrument for monitoring fetal distress
US4323999A (en) * 1980-02-29 1982-04-06 Pilot Mannenhitsu Kabushi Kaisha Automatic transmission or recording or transmission and reception control system
US4591668A (en) * 1984-05-08 1986-05-27 Iwata Electric Co., Ltd. Vibration-detecting type microphone
US5109863A (en) * 1989-10-26 1992-05-05 Rutgers, The State University Of New Jersey Noninvasive diagnostic system for coronary artery disease
US5425104A (en) * 1991-04-01 1995-06-13 Resound Corporation Inconspicuous communication method utilizing remote electromagnetic drive
US5793875A (en) * 1996-04-22 1998-08-11 Cardinal Sound Labs, Inc. Directional hearing system
US6084516A (en) * 1998-02-06 2000-07-04 Pioneer Electronic Corporation Audio apparatus
US6368283B1 (en) * 2000-09-08 2002-04-09 Institut De Recherches Cliniques De Montreal Method and apparatus for estimating systolic and mean pulmonary artery pressures of a patient
US6415033B1 (en) * 1999-09-15 2002-07-02 Ilife Systems, Inc. Physiological condition monitors utilizing very low frequency acoustic signals

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561430A (en) * 1967-07-20 1971-02-09 William W Filler Jr Fetal heartbeat rate instrument for monitoring fetal distress
US4323999A (en) * 1980-02-29 1982-04-06 Pilot Mannenhitsu Kabushi Kaisha Automatic transmission or recording or transmission and reception control system
US4591668A (en) * 1984-05-08 1986-05-27 Iwata Electric Co., Ltd. Vibration-detecting type microphone
US5109863A (en) * 1989-10-26 1992-05-05 Rutgers, The State University Of New Jersey Noninvasive diagnostic system for coronary artery disease
US5425104A (en) * 1991-04-01 1995-06-13 Resound Corporation Inconspicuous communication method utilizing remote electromagnetic drive
US5793875A (en) * 1996-04-22 1998-08-11 Cardinal Sound Labs, Inc. Directional hearing system
US6084516A (en) * 1998-02-06 2000-07-04 Pioneer Electronic Corporation Audio apparatus
US6415033B1 (en) * 1999-09-15 2002-07-02 Ilife Systems, Inc. Physiological condition monitors utilizing very low frequency acoustic signals
US6368283B1 (en) * 2000-09-08 2002-04-09 Institut De Recherches Cliniques De Montreal Method and apparatus for estimating systolic and mean pulmonary artery pressures of a patient

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130602B2 (en) 2006-01-18 2015-09-08 Qualcomm Incorporated Method and apparatus for delivering energy to an electrical or electronic device via a wireless link
US9124120B2 (en) 2007-06-11 2015-09-01 Qualcomm Incorporated Wireless power system and proximity effects
US9601267B2 (en) 2013-07-03 2017-03-21 Qualcomm Incorporated Wireless power transmitter with a plurality of magnetic oscillators

Also Published As

Publication number Publication date
WO2002060215A2 (en) 2002-08-01

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