GB1137922A - Telemetering process and station for acoustic phenomena - Google Patents

Telemetering process and station for acoustic phenomena

Info

Publication number
GB1137922A
GB1137922A GB1460266A GB1460266A GB1137922A GB 1137922 A GB1137922 A GB 1137922A GB 1460266 A GB1460266 A GB 1460266A GB 1460266 A GB1460266 A GB 1460266A GB 1137922 A GB1137922 A GB 1137922A
Authority
GB
United Kingdom
Prior art keywords
measurement
signals
test
microphone
transmitted
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
GB1460266A
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.)
Aeroports de Paris SA
Original Assignee
Aeroports de Paris SA
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 Aeroports de Paris SA filed Critical Aeroports de Paris SA
Publication of GB1137922A publication Critical patent/GB1137922A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/12—Amplitude; Power by electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

1,137,922. Sound level monitoring. AEROPORT DE PARIS. 1 April, 1966 [5 April, 1965], No. 14602/66. Heading H4D. In a system for making measurements of ambient noise level and transmitting them to a remote point for recording, test signals for monitoring the operation of the system are transmitted after each measurement. For measuring noise at an airport, each of a plurality of measuring stations is connected to a central recording point by a telephone or radio link. At each station the transmission of measurement signals 60 is initiated when the output of a microphone exceeds a threshold amplitude 59, and is terminated after a predetermined period 61 or when the noise level drops below a predetermined value. Test signals 62 from a first test oscillator are then transmitted for a predetermined period 63 and permit monitoring of the overall operation of the measurement and transmission system. Test signals 64 from a second test oscillator may then be transmitted for a further predetermined period 68 for monitoring the operation of those elements of the system which follow the microphone. Alternatively, the order of the two test transmissions may be reversed, or the first tear. may be omitted. By comparing the signals 62, 64 as recorded the system-generated noise of the microphone and transmission system may be separately determined and the complete system may be calibrated. At the central recording point a multi-channel receiver is switched to supply signals transmitted from a selected measurement station to either a graphic recorder or a magnetic recorder or both. A talking clock is associated with the magnetic recorder. Details of timing and switching systems for applying measurement and test signals sequentially to the transmission system are given (Figs. 1, 3, 4, none shown). In a modification employing several microphones at each measuring station, a selector switches in whichever microphone first provides an output exceeding the threshold value.
GB1460266A 1965-04-05 1966-04-01 Telemetering process and station for acoustic phenomena Expired GB1137922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR11948A FR1446334A (en) 1965-04-05 1965-04-05 Automatic acoustic telemetry station

Publications (1)

Publication Number Publication Date
GB1137922A true GB1137922A (en) 1968-12-27

Family

ID=8575644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1460266A Expired GB1137922A (en) 1965-04-05 1966-04-01 Telemetering process and station for acoustic phenomena

Country Status (2)

Country Link
FR (1) FR1446334A (en)
GB (1) GB1137922A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2541091A (en) * 2015-06-09 2017-02-08 Kp Acoustics Ltd Integrated sensor system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2541091A (en) * 2015-06-09 2017-02-08 Kp Acoustics Ltd Integrated sensor system
CN108040489A (en) * 2015-06-09 2018-05-15 Kp声学有限公司 Integrated sensor system
GB2541091B (en) * 2015-06-09 2019-11-06 Kp Enview Ltd Integrated sensor system
US11085814B2 (en) 2015-06-09 2021-08-10 Kp Enview Ltd. Integrated sensor system

Also Published As

Publication number Publication date
FR1446334A (en) 1966-07-22

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