GB1278249A - Improvements in or relating to vibration detectors - Google Patents

Improvements in or relating to vibration detectors

Info

Publication number
GB1278249A
GB1278249A GB5863768A GB5863768A GB1278249A GB 1278249 A GB1278249 A GB 1278249A GB 5863768 A GB5863768 A GB 5863768A GB 5863768 A GB5863768 A GB 5863768A GB 1278249 A GB1278249 A GB 1278249A
Authority
GB
United Kingdom
Prior art keywords
conductors
strips
vibration
coating
modified
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
GB5863768A
Inventor
Peter Hyslop Dunbar
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB5863768A priority Critical patent/GB1278249A/en
Publication of GB1278249A publication Critical patent/GB1278249A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
    • G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
    • G01V1/201—Constructional details of seismic cables, e.g. streamers
    • G01V1/208—Constructional details of seismic cables, e.g. streamers having a continuous structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
    • B61L1/02—Electric devices associated with track, e.g. rail contacts
    • B61L1/06—Electric devices associated with track, e.g. rail contacts actuated by deformation of rail; actuated by vibration in rail
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • 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

Abstract

1278249 Vibration detectors MARCONI CO Ltd 5 Sept 1969 [10 Dec 1968] 58637/68 Headings H4J J7BY J7L and J6A Apparatus for detecting vibrations in roads, railway lines or prison walls, comprises at least two elongate metal conductors, e.g tubes 1 and 3, Fig. 1; strips 5 and 6, Fig. 3; strips 11, Fig. 5, of sufficient hardness and rigidity to be capable of resonant vibration even in the absence of a tensile force and an elongate insulator, e.g. tube 2, Fig. 1; coating 7, Fig. 3; member 12, Fig. 5, arranged to permit free, if limited, movement of the conductors with respect to one another so that when the conductors are set in vibration a voltage is generated between the conductors due to the tribo-electric effect and/or capacitance changes between the conductors. The conductors may be of aluminium alloy or brass and the insulators may be of P.T.F.E. or P.V.C. The Fig. 1 arrangement may be modified by replacing the insulating tube 2 by a coating (21), Fig. 2 (not shown) on the inner tube 3. The Fig. 3 arrangement may be modified by having coatings (9) Fig. 4 (not shown) on the two outer conductive strips (8), three metal strips (10) being provided between the coated strips.
GB5863768A 1968-12-10 1968-12-10 Improvements in or relating to vibration detectors Expired GB1278249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5863768A GB1278249A (en) 1968-12-10 1968-12-10 Improvements in or relating to vibration detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5863768A GB1278249A (en) 1968-12-10 1968-12-10 Improvements in or relating to vibration detectors

Publications (1)

Publication Number Publication Date
GB1278249A true GB1278249A (en) 1972-06-21

Family

ID=10482069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5863768A Expired GB1278249A (en) 1968-12-10 1968-12-10 Improvements in or relating to vibration detectors

Country Status (1)

Country Link
GB (1) GB1278249A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29896E (en) 1973-07-24 1979-01-30 Westinghouse Electric Corp. Intrusion detection system
FR2514047A1 (en) * 1981-10-01 1983-04-08 Coussineux Henri Automatic detector and indicator for accidents on roads - uses vibration detectors regularly placed along rail to generate electric signals to base station
US4760295A (en) * 1985-04-17 1988-07-26 Geoquip Security Systems Ltd. Vibration-sensitive transducer
WO2007000361A1 (en) * 2005-06-28 2007-01-04 SIEMENS AKTIENGESELLSCHAFT öSTERREICH Gate course pole for skiing
GB2420630B (en) * 2003-07-28 2007-03-07 Senstar Stellar Corp Triboelectric, ranging, or dual use security sensor cable and method of manufacturing same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29896E (en) 1973-07-24 1979-01-30 Westinghouse Electric Corp. Intrusion detection system
FR2514047A1 (en) * 1981-10-01 1983-04-08 Coussineux Henri Automatic detector and indicator for accidents on roads - uses vibration detectors regularly placed along rail to generate electric signals to base station
US4760295A (en) * 1985-04-17 1988-07-26 Geoquip Security Systems Ltd. Vibration-sensitive transducer
GB2420630B (en) * 2003-07-28 2007-03-07 Senstar Stellar Corp Triboelectric, ranging, or dual use security sensor cable and method of manufacturing same
WO2007000361A1 (en) * 2005-06-28 2007-01-04 SIEMENS AKTIENGESELLSCHAFT öSTERREICH Gate course pole for skiing

Similar Documents

Publication Publication Date Title
MY104562A (en) Head-gimbal assembly with improved conductor sleeve support
GB1278249A (en) Improvements in or relating to vibration detectors
GB2274208B (en) Earthed cable gland
GB1105946A (en) Corona discharge coating processes
SE8204218L (en) Force transducer spring suspension - achieves desired spring constant and rigidity using thin section carrying conductor, thicker webs
GB1285786A (en) Improvements in or relating to electrical alarm systems
GB717629A (en) Improvements in casings for electric conductors
US2721976A (en) Capacitance measuring electrode
Perls Electrical noise from instrument cables subjected to shock and vibration
GB1308971A (en) Electron beam deflection apparatus
GB811669A (en) Improvements relating to displacement measuring devices
FR2324141A1 (en) Partition feed through for rigid conductor - is suitable for medium and high voltages and has two bellows filled with insulating material
KR920018810A (en) Cathode ray tube
EP0150855A3 (en) Ionizing lightning conductor
GB832589A (en) Improvements in or relating to glands for sealing electric cables and the like
GB904944A (en) Improvements in or relating to section insulators for use in overhead conductors of electric traction systems
Ludeke Guidance and Collimation of Sputtered Tungsten Particles
DK0621611T3 (en) Support insulator
FR2068780A1 (en) Supply cable for electrostatic precipitator
GB1300008A (en) Corona discharge device
FR2343339A1 (en) Contact block for accurate potential measurement - has wire contact passing through axial hole to give high positional accuracy without field distortion
GB1248041A (en) Electron microscopy
GB754478A (en) Electrostatic coating apparatus
SE8600638D0 (en) DEVICE FOR CURRENT AND VOLTAGE Saturation in an air-insulated high voltage system
Thornton et al. A 500kv triggered spark gap

Legal Events

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