GB1122552A - Ultrasonic presence detector - Google Patents

Ultrasonic presence detector

Info

Publication number
GB1122552A
GB1122552A GB306466A GB306466A GB1122552A GB 1122552 A GB1122552 A GB 1122552A GB 306466 A GB306466 A GB 306466A GB 306466 A GB306466 A GB 306466A GB 1122552 A GB1122552 A GB 1122552A
Authority
GB
United Kingdom
Prior art keywords
echoes
vehicle
ultrasonic
reflections
consecutive
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
Application number
GB306466A
Other languages
English (en)
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.)
SPX Technologies Inc
Original Assignee
General Signal Corp
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 General Signal Corp filed Critical General Signal Corp
Publication of GB1122552A publication Critical patent/GB1122552A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/04—Systems determining presence of a target
    • 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
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/529—Gain of receiver varied automatically during pulse-recurrence period
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB306466A 1965-03-31 1966-01-24 Ultrasonic presence detector Expired GB1122552A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44414765A 1965-03-31 1965-03-31
US83619169A 1969-05-19 1969-05-19

Publications (1)

Publication Number Publication Date
GB1122552A true GB1122552A (en) 1968-08-07

Family

ID=27033796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB306466A Expired GB1122552A (en) 1965-03-31 1966-01-24 Ultrasonic presence detector

Country Status (4)

Country Link
BE (1) BE677066A (enrdf_load_stackoverflow)
DE (1) DE1516647C3 (enrdf_load_stackoverflow)
GB (1) GB1122552A (enrdf_load_stackoverflow)
NL (1) NL148707B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023087592A1 (zh) * 2021-11-16 2023-05-25 广州视源电子科技股份有限公司 衣物干湿状态检测方法、装置、衣物护理机及存储介质

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023087592A1 (zh) * 2021-11-16 2023-05-25 广州视源电子科技股份有限公司 衣物干湿状态检测方法、装置、衣物护理机及存储介质

Also Published As

Publication number Publication date
NL148707B (nl) 1976-02-16
DE1516647B2 (de) 1975-01-16
NL6603938A (enrdf_load_stackoverflow) 1966-10-03
BE677066A (enrdf_load_stackoverflow) 1966-07-18
DE1516647A1 (de) 1969-06-19
DE1516647C3 (de) 1975-08-28

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