公开(公告)号：US3444508A

公开(公告)日：1969-05-13

申请号：US3444508D

申请日：1967-09-08

Applicant: SPARTON CORP

Inventor： GRANFORS ERNEST A ,  LOVELESS DON L ,  BOYLE CHARLES F ,  KOMPANEK HARRY W

IPC: B06B1/06 ,  G01V1/00 ,  G10K11/32 ,  G01S1/72

CPC classification number: B06B1/0633 ,  G01V1/001 ,  G10K11/32

公开(公告)号：US3559162A

公开(公告)日：1971-01-26

申请号：US3559162D

申请日：1969-04-14

Applicant: SPARTON CORP

Inventor： GRANFORS ERNEST A ,  LOVELESS DON L ,  BOYLE CHARLES F

IPC: H04R1/32 ,  B06B1/06 ,  G01S7/521 ,  H04R17/00

CPC classification number: B06B1/0655

Abstract: AN UNDERWATER SONAR TRANSDUCER UTILIZING A UNITARY OR HOMOGENEOUS CYLINDRICAL PIEZOELECTRIC CERAMIC ELEMENT HAVING TWO SETS OF ELECTRODES FIXED THERETO AT SEPARATE AXIAL REGIONS OF THE PIEZOELECTRIC CYLINDER ELEMENT. ONE SET OF ELECTRODES PRODUCES ORTHOGONAL DIRECTIONAL BEARING RELATED VOLTAGES, AND THE OTHER SET OF ELECTRODES PRODUCES OMNIDIRECTIONAL BEARING RELATED TO VOLTAGES.

公开(公告)号：US3564491A

公开(公告)日：1971-02-16

申请号：US3564491D

申请日：1969-03-26

Applicant: SPARTON CORP

Inventor： GRANFORS ERNEST A ,  LOVELESS DON L ,  BOYLE CHARLES F ,  KOMPANEK HARRY W

IPC: B06B1/06 ,  G01S1/72 ,  G10K11/32 ,  H04R1/40

CPC classification number: G10K11/32 ,  B06B1/0633 ,  G01S1/72

Abstract: A TRANSDUCER FOR UNDERWATER ACOUSTIC SENSING SYSTEMS WHEREIN THE TRANSDUCER COMPRISES HOLLOW PIEZOELECTRIC CERAMIC CYLINDERS ACOUSTICALLY ISOLATED AND STACKED IN A VERTICAL INTERSTITIAL ARRAY. THREE TRANSDUCER SECTIONS ARE UTILIZED HAVING AN OUTPUT LEVEL AND RELATIVE POLARITY RELATED IN ACCORDANCE WITH THE DIRECTION FROM WHICH THE ACOUSTIC SIGNAL BEING RECEIVED ARRIVES. ONE OF THE ACOUSTIC RECEIVING PATTERNS IS OMNIDIRECTIONAL, AND THE OTHERS ARE SINECOSINE DIPOLE PATTERNS WHICH HAVE THE CHARACTERISTICS OF OUTPUT LEVEL VARIATION WITH BEARING. THE OMNI OUTPUT PROVIDES AN AMPLITUDE AND PHASE REFERENCE FOR COMPARING THE AMPLITUDE AND POLARITIES OF THE TWO BEARING-SENSITIVE SIGNALS. THE RESULTANT THREE SIGNALS, AND COMPASS INFORMATION CONSTITUTE THE PRIMARY OUTPUTS OF THE SENSING SYSTEM WHICH ARE TRANSMITTED TO SUITABLE DECODING AND RADIO TRANSMISSION APPARATUS.