GB2235980B - Ultrasonic master-slave rangefinder - Google Patents

Ultrasonic master-slave rangefinder

Info

Publication number
GB2235980B
GB2235980B GB9019795A GB9019795A GB2235980B GB 2235980 B GB2235980 B GB 2235980B GB 9019795 A GB9019795 A GB 9019795A GB 9019795 A GB9019795 A GB 9019795A GB 2235980 B GB2235980 B GB 2235980B
Authority
GB
United Kingdom
Prior art keywords
rangefinder
slave
ultrasonic
master
ultrasonic master
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.)
Expired - Fee Related
Application number
GB9019795A
Other versions
GB2235980A (en
GB9019795D0 (en
Inventor
Geoff S B Czajkowski
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.)
Suparules Ltd
Original Assignee
Suparules 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 Suparules Ltd filed Critical Suparules Ltd
Publication of GB9019795D0 publication Critical patent/GB9019795D0/en
Publication of GB2235980A publication Critical patent/GB2235980A/en
Application granted granted Critical
Publication of GB2235980B publication Critical patent/GB2235980B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/74—Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB9019795A 1989-09-11 1990-09-11 Ultrasonic master-slave rangefinder Expired - Fee Related GB2235980B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE290489A IE61810B1 (en) 1989-09-11 1989-09-11 Ultrasonic master-slave rangefinder

Publications (3)

Publication Number Publication Date
GB9019795D0 GB9019795D0 (en) 1990-10-24
GB2235980A GB2235980A (en) 1991-03-20
GB2235980B true GB2235980B (en) 1993-06-30

Family

ID=11036985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9019795A Expired - Fee Related GB2235980B (en) 1989-09-11 1990-09-11 Ultrasonic master-slave rangefinder

Country Status (4)

Country Link
DE (1) DE4028822A1 (en)
GB (1) GB2235980B (en)
IE (1) IE61810B1 (en)
ZA (1) ZA907212B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439055A (en) * 1972-10-09 1976-06-09 Matra Engins Detection system
US4026654A (en) * 1972-10-09 1977-05-31 Engins Matra System for detecting the presence of a possibly moving object
US4214314A (en) * 1978-03-13 1980-07-22 Regents Of The University Of California Precision transponder and method of communicating therewith
GB2123239A (en) * 1982-06-29 1984-01-25 Decca Ltd Measuring distance using transponders
WO1987004527A1 (en) * 1986-01-28 1987-07-30 Mikrovalmiste Oy U.J. Pulkkanen Oy A method and a device for measuring a distance by means of ultrasonic pulses

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439055A (en) * 1972-10-09 1976-06-09 Matra Engins Detection system
US4026654A (en) * 1972-10-09 1977-05-31 Engins Matra System for detecting the presence of a possibly moving object
US4214314A (en) * 1978-03-13 1980-07-22 Regents Of The University Of California Precision transponder and method of communicating therewith
GB2123239A (en) * 1982-06-29 1984-01-25 Decca Ltd Measuring distance using transponders
WO1987004527A1 (en) * 1986-01-28 1987-07-30 Mikrovalmiste Oy U.J. Pulkkanen Oy A method and a device for measuring a distance by means of ultrasonic pulses
GB2207504A (en) * 1986-01-28 1989-02-01 Innovatum Oy A method and a device for measuring a distance by means of ultrasonic pulses
US4894810A (en) * 1986-01-28 1990-01-16 Mikrovalmiste U.J. Pulkkanen Oy Method and a device for measuring a distance by means of ultrasonic pulses

Also Published As

Publication number Publication date
GB2235980A (en) 1991-03-20
DE4028822A1 (en) 1991-03-14
ZA907212B (en) 1991-07-31
GB9019795D0 (en) 1990-10-24
IE892904A1 (en) 1991-05-22
IE61810B1 (en) 1994-11-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940911