JPS5424054A - Object detecting device - Google Patents

Object detecting device

Info

Publication number
JPS5424054A
JPS5424054A JP8901177A JP8901177A JPS5424054A JP S5424054 A JPS5424054 A JP S5424054A JP 8901177 A JP8901177 A JP 8901177A JP 8901177 A JP8901177 A JP 8901177A JP S5424054 A JPS5424054 A JP S5424054A
Authority
JP
Japan
Prior art keywords
detecting device
object detecting
detecting element
phase difference
controlling
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.)
Granted
Application number
JP8901177A
Other languages
Japanese (ja)
Other versions
JPS5922912B2 (en
Inventor
Kazuhiro Morizaki
Yoshiharu Yano
Asaaki Tanimoto
Saburo Konno
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.)
Sumitomo Electric Industries Ltd
Panasonic Holdings Corp
Original Assignee
Sumitomo Electric Industries Ltd
Matsushita Electric Industrial Co Ltd
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 Sumitomo Electric Industries Ltd, Matsushita Electric Industrial Co Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP52089011A priority Critical patent/JPS5922912B2/en
Publication of JPS5424054A publication Critical patent/JPS5424054A/en
Publication of JPS5922912B2 publication Critical patent/JPS5922912B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To achieve automatic adjustment to permit detecting element to be driven always at high sensitivity frequency by controlling a voltage controlled type oscillating circuit with a voltage applied to the detecting element and a phase difference signal of current flowing in the element.
JP52089011A 1977-07-25 1977-07-25 object detection device Expired JPS5922912B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52089011A JPS5922912B2 (en) 1977-07-25 1977-07-25 object detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52089011A JPS5922912B2 (en) 1977-07-25 1977-07-25 object detection device

Publications (2)

Publication Number Publication Date
JPS5424054A true JPS5424054A (en) 1979-02-23
JPS5922912B2 JPS5922912B2 (en) 1984-05-29

Family

ID=13958944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52089011A Expired JPS5922912B2 (en) 1977-07-25 1977-07-25 object detection device

Country Status (1)

Country Link
JP (1) JPS5922912B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208482A (en) * 1981-06-18 1982-12-21 Matsushita Electric Works Ltd Ultrasonic pulse switch
JPS58169073A (en) * 1982-03-31 1983-10-05 Matsushita Electric Works Ltd Driver for ultrasonic vibrator
JPS60199530A (en) * 1984-03-19 1985-10-09 Matsushita Electric Ind Co Ltd Caulking method of shaft
JPS6280010U (en) * 1985-11-07 1987-05-22

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208482A (en) * 1981-06-18 1982-12-21 Matsushita Electric Works Ltd Ultrasonic pulse switch
JPS58169073A (en) * 1982-03-31 1983-10-05 Matsushita Electric Works Ltd Driver for ultrasonic vibrator
JPS60199530A (en) * 1984-03-19 1985-10-09 Matsushita Electric Ind Co Ltd Caulking method of shaft
JPS6280010U (en) * 1985-11-07 1987-05-22

Also Published As

Publication number Publication date
JPS5922912B2 (en) 1984-05-29

Similar Documents

Publication Publication Date Title
GB1557408A (en) Driving arragement for an electronic timepliece
JPS5424054A (en) Object detecting device
JPS5312207A (en) Multi-frequency signal receiver
JPS52122451A (en) Oscillation circuit
JPS5424053A (en) Object detecting device
JPS5296570A (en) Power saving method of crystal wristwatch
ES459130A1 (en) Receiver for a HF-intrusion detection system
JPS5672366A (en) Measuring device of holding current of thyristor
JPS5424055A (en) Object detecting device
JPS5337310A (en) Automatic frequency control circuit
JPS5211751A (en) Phase synchronizing type frequency stabilizng circuit
JPS53144240A (en) Signal detection circuit
JPS53144242A (en) Phase synchronous control circuit
JPS5443401A (en) Electronic tuning display unit
JPS5663210A (en) Display unit for fluctuated amount of resistance bridge
JPS52150674A (en) Electricity quantity measuring apparatus
JPS52128122A (en) Ultrasonic oscillator
JPS52104249A (en) Electronic controlling meter with output indicater
JPS52124849A (en) Timing signal detection circuit
JPS5268468A (en) Watch device
JPS5421202A (en) Drive control circuit for fm level meter
JPS51118359A (en) Phase corresponding circuit
JPS5434664A (en) Osciliation frequency adjuster
JPS5370753A (en) Alternating current signal switch circuit
JPS53128255A (en) Automatic frequency control circuit