JPS5749875A - Measuring method for moving speed and distance - Google Patents

Measuring method for moving speed and distance

Info

Publication number
JPS5749875A
JPS5749875A JP12551980A JP12551980A JPS5749875A JP S5749875 A JPS5749875 A JP S5749875A JP 12551980 A JP12551980 A JP 12551980A JP 12551980 A JP12551980 A JP 12551980A JP S5749875 A JPS5749875 A JP S5749875A
Authority
JP
Japan
Prior art keywords
signal
distance
received
phase difference
capsule
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
JP12551980A
Other languages
Japanese (ja)
Other versions
JPS5925988B2 (en
Inventor
Hideto Mitome
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP12551980A priority Critical patent/JPS5925988B2/en
Publication of JPS5749875A publication Critical patent/JPS5749875A/en
Publication of JPS5925988B2 publication Critical patent/JPS5925988B2/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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To simplify measuring of a speed and a distance, by a method wherein a reference signal, received at a reference point by a moving object, is produced into a serial signal by means of a gate circuit, a delay element, and a feedback circuit, and a signal, received at a current spot by the moving object, is compared with a phase. CONSTITUTION:Sampling of a reference signal is conducted through the reception of a signal, such as ultrasonic waves, from the bottom of the sea in a capsule above the water. The signal is inputted to a gate circuit G and is controlled by a clock circuit to produce a signal a having a width DELTAt. The signal is inputted to a delay element d to provide a delay by the DELTAt again to produce a serial signal b. After said sampling is completed, the capsule starts to fall, a phase difference between a signal c, sent from the bottom of the sea and received at a current spot, and the signal b is found by means of a phase difference comparison circuit to find the speed of the capsule, and a phase difference is integrated to find a moving distance. This eliminates the need for an equipment, transmitting a reference signal from a mother ship, and as a result, permits the constitution of a simple device.
JP12551980A 1980-09-10 1980-09-10 How to measure moving speed and distance Expired JPS5925988B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12551980A JPS5925988B2 (en) 1980-09-10 1980-09-10 How to measure moving speed and distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12551980A JPS5925988B2 (en) 1980-09-10 1980-09-10 How to measure moving speed and distance

Publications (2)

Publication Number Publication Date
JPS5749875A true JPS5749875A (en) 1982-03-24
JPS5925988B2 JPS5925988B2 (en) 1984-06-22

Family

ID=14912153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12551980A Expired JPS5925988B2 (en) 1980-09-10 1980-09-10 How to measure moving speed and distance

Country Status (1)

Country Link
JP (1) JPS5925988B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61280836A (en) * 1985-05-09 1986-12-11 三洋電機株式会社 Tableware washing machine
JPS62197091U (en) * 1986-06-05 1987-12-15
JP2007225500A (en) * 2006-02-24 2007-09-06 Denso Corp Distance measuring method and device
JP2013181988A (en) * 2012-03-02 2013-09-12 U-Blox Ag Positioning using local wave-propagation model

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013478A (en) * 1983-07-04 1985-01-23 Matsushita Refrig Co Overcurrent protecting device of inverter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61280836A (en) * 1985-05-09 1986-12-11 三洋電機株式会社 Tableware washing machine
JPH043209B2 (en) * 1985-05-09 1992-01-22
JPS62197091U (en) * 1986-06-05 1987-12-15
JP2007225500A (en) * 2006-02-24 2007-09-06 Denso Corp Distance measuring method and device
JP2013181988A (en) * 2012-03-02 2013-09-12 U-Blox Ag Positioning using local wave-propagation model

Also Published As

Publication number Publication date
JPS5925988B2 (en) 1984-06-22

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