WO2016025022A1 - Ensemble capteur piézoélectrique, et ensemble de fixation de capteur et système électrique le comprenant - Google Patents

Ensemble capteur piézoélectrique, et ensemble de fixation de capteur et système électrique le comprenant Download PDF

Info

Publication number
WO2016025022A1
WO2016025022A1 PCT/US2015/013401 US2015013401W WO2016025022A1 WO 2016025022 A1 WO2016025022 A1 WO 2016025022A1 US 2015013401 W US2015013401 W US 2015013401W WO 2016025022 A1 WO2016025022 A1 WO 2016025022A1
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric sensor
assembly
sensor
piezoelectric
structured
Prior art date
Application number
PCT/US2015/013401
Other languages
English (en)
Inventor
Dale L. Gass
Jeffrey T. STRINGER
Original Assignee
Eaton Corporation
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
Priority claimed from US14/457,625 external-priority patent/US9933285B2/en
Application filed by Eaton Corporation filed Critical Eaton Corporation
Priority to DE112015003721.7T priority Critical patent/DE112015003721T5/de
Publication of WO2016025022A1 publication Critical patent/WO2016025022A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • H02H1/0023—Using arc detectors sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Definitions

  • CSP Continuation-in-Part
  • the disclosed concept relates generall y to sensors and. more particularly, to piezoelectric sensor assemblies.
  • the disclosed concept also relates to sensor attachment assemblies piezoelectric sensor assemblies.
  • the disclosed concept further relates to electrical systems employing piezoelectric sensor assemblies.
  • Electrical systems often i nclude a plurality of bus bars, and various electrical apparatus, such as electrical switching apparatus (e.g., without limitation, circuit breakers), mechanically coupled and electrically connected to the bus bars.
  • electrical switching apparatus e.g., without limitation, circuit breakers
  • Some electrical systems employ sensors attached directly to the bus bars, in order to monitor various conditions within the electrical system.
  • attachment of such sensors to the bus bars is subject to a variety of issues or problems. It is desirable to provide for relatively quick and easy attachment of the sensors in new system applications, as well as to allow for retro-fit applications.
  • additional considerations are minimizing complexity and cost, ease of assembly and manufacture of the attachment assembly, and avoiding the attachment assembly coming loose, for example during shipment or installation.
  • the sensor and attachment assembly must also be capable of safe and effective operation i relatively high temperature (e.g., up to 135 degrees Celsius or more bus bar temperatures) environments.
  • one sensor application Involves the attachment of acoustic sensors to the electrical bus bars of a low to medium voltage electrical system.
  • One prior proposal employs a piezoelectric sensor assembly to detect acoustic signals in order to monitor the bus bars for loose connections.
  • known piezoeiectnc assemblies are relatively complex in design and employ numerous parts, including a screw assembly to pre-load the piezoelectric element. This adds to the cost and complexity and diminishes reliability. Pre-loading piezoelectric element via the screw assembly also makes it difficult to produce and repeat effective results.
  • a piezoelectric sensor assembly for an electrical system.
  • the electrical system includes a sensor
  • the sensor attachment assembly includes a sensor housing and a fastening member for fastening die sensor housing to a corresponding one of the electrical conductors.
  • the piezoelectric sensor assembly comprises: a processor structured to be enclosed b the sensor housing; a piezoelectric sensor element; a wiring assembly electrically connecting the
  • piezoelectric sensor element to the processor; an insulating member coupled to the piezoelectric sensor element and being structured to extend outwardiy from the sensor housing to engage the corresponding one of the el ectrical conductors; and a mounting enclosure structured to mount the piezoelectric sensor element and the insulating member to the sensor housing.
  • the insulating member may be a ceramic disc.
  • the ceramic disc may include a first side and a second side disposed opposite the first side, wherein the first side is structured to engage the corresponding one of the el ectrical conductors, and wherein the second side includes a recess structured to receive the piezoelectric sensor element.
  • the piezoelectric sensor element may be adhered to the second side of the ceramic disc with a conductive adhesive (e.g., without limitation, conductive epoxy; conductive sili cone-adhesive).
  • the piezoelectric sensor element may comprise a first electrode and a second electrode
  • the wiring assembly may include a first wire, a second wire and an electrical connector.
  • the first wire and the second wire may each include a first end and a second end, wherei the first end of the first wire is electrically connected to the first electrode and wherein the first end of the second wire is electrically connec ted to the second electrode.
  • the second end of the first wire and the second end of the second wire may both be electrically connected to the electrical connector.
  • the mounting enclosure may be shielding member comprising a cylindrical body, a thru hole extending through the cylindrical body, and a flange extending radially outwardly from the cylindrical body.
  • the cylindrical body may enclose and shield the piezoelectric sensor element.
  • the wiring assembly may extend through the thru hole.
  • the flange may be structured to cooperate with a
  • the shielding member may further comprise a curved spring or wave spring washer, wherein the curved spring or wave spring wahser is structured to extend around the cylindrical body between the flange and the corresponding portion of the sensor housing.
  • a sensor attachment assembly for an electrical system including a number of electrical conductors.
  • the sensor attachment, assembly comprises; a sensor housing; a fastening member structured to fasten the sensor housing to a corresponding one of the electrical conductors; and a piezoelectric sensor assembly comprising: a processor enclosed hv the sensor housins a piezoelectric sensor element, a wirinu assembly electrically connecting the piezoeieciric sensor element to the processor, an insulating member coupled to the piezoelectric sensor element and extending outwardly from the senso housing to engage the corresponding one of the electrical conduc tors , and a mounting enclosure mounting the piezoelectric sensor element and the insulating member to the sensor housing.
  • an electrical system comprises: a number of electrical conductors; and a sensor attachment assembly comprising: a sensor housing, a fastening member for fastening the sensor housing to a corresponding one of the electrical conductors, and a piezoelectric sensor assembly comprising: a processor enclosed by the sensor housing, a piezoelectric sensor element, a wiring assembly electrically connecting the piezoelectric sensor element to the processor, an insulating member coupled to the piezoelectric sensor element and extending outwardly from the sensor housing to engage the corresponding one of the electrical conductors, and a mounting enclosure mounting the piezoelectric sensor element and the insulating member to the sensor housing.
  • Figure 1 an isometric view of a portion of an electrical system and sensor attachment assembly therefor, in accordance with an embodiment of the disclosed concept
  • Fiautes 2 and 3 are a isometric views of the sensor attachment assembly of Figure 1 ;
  • Figure 4 is a top plan view of the portion of the electrical system and sensor attachment assembly therefor of Figure I;
  • Figure 5 is a side elevation view of the portion of the electrical system and sensor a ttachment assembl therefor of Figure 4;
  • Figure 6 is an end elevation, partia lly in section view of the portion of the electrical system and sensor attachment assembly therefor of Figure 5;
  • Fiaure 7 is an isometric view of a sensor attachment assembly
  • Figure 8 is an enlarged view of a portion of the sensor attachment assembly and piezoelectric sensor assembly of Figure 7;
  • Figure 9 is an isometric view of the piezoelectric sensor assembly of
  • the disclosed sensor attachment assembly is described herein with respect to the attachment of acoustic sensors to the electrical bus bars of a low to medium voltage electrical system.
  • acoustic sensors are described, for example and without limitation, in commonly assigned U.S. Patent ' No. 8,665,666 and ' U.S. Patent Application Publication No, 2012/0092020, which are hereby incorporated by reference as if fully set forth herein.
  • the disclosed sensor attachment assembly could be used, in a wide variety of alternative electrical systems for the suitable attachment of any known or suitable type and/or configuration of sensor or other electrical apparatus to a bus bar or other suitable electrical conductor.
  • piezo piezoelectric
  • piezoelectric piezoelectric
  • piezoelectric sensor shall be used substantially interchangeably to refer to any known or suitable device (e.g. , without limitation, sensor) thai uses the piezoelectric effect to measure changes in pressure, acceleration, strain and/or force by converting them to an electrical charge.
  • a piezo disc or piezoelectric disc is a type of piezoelectric sensor that functions by generating a voltage when deformed (e.g., without limitation, depressed).
  • fastener refers to any suitable separate connecting or tightening mechanism or components expressly including, but not limited to rivets, screws, bolts and the combinations of bolts and nuts (eg., without limitation. Sock nuts) and bolts, washers and nuts.
  • Coupled together shall mean that the part are joined together either directly or joined through one or more intermediate parts. As employed herein, the statement that, two or more parts are
  • number' shall mean one or an integer greater than one ( . e. , a plura!i ty).
  • Figure 1 shows a sensor attachment assembl 100 for an electrical system 2 (partially shown), in accordance with one non-limiting example embodiment of the di sclosed concept.
  • the electrical system 2 includes a sensor 4 (partia lly shown in simplified form in phantom line drawing in Figure 1 ), and a number of electrical conductors such as, for example and without limitation, the single bus bar 6, shown.
  • the sensor attachment assembly 100 includes a sensor housing 102 structured to at least partially enclose the sensor 4 ( Figure 1 ), and a fastening member 200 coupled to the sensor housing 102.
  • the example fastening member is an
  • elongated strap 200 which is structured to extend from one portion of the sensor housing 102 around the corresponding electrical conductor (e.g., without limitation, bus bar 6 (partially shown)), and to attach to another portion of the sensor housing 102, in order to removably attach the sensor 4 to the bus bar 6.
  • the elongated strap 200 wraps around the bus bar 6 and reattaches to the sensor housing 102, as shown in Figure 1 (see also Figures 4-6).
  • the elongated strap 200 is adj stable among the plurality of
  • the sensor housing 102 includes a number of corresponding protrusions, adapted to cooperate with the holes 202,204.
  • the protrusions are a pair of pegs 104, i 06.
  • Each peg 104,106 is structured to extend into and be disposed within a correspondin one of the holes 202,204 to removably secure the elongated strap 200 in a desired one of the
  • the pl urality of holes preferably comprises two parallel rows of holes 202,204 extending along the length of the elongated strap 200, as shown.
  • the pegs 104,106 extend outwardly from the sensor housing 102, and are disposed within a desired pair of parallel holes 202,204 (see, for example. Figures 1 and 4-6).
  • the sensor attachment assembly 100 can accommodate, for example, different widths and/or depths of bus bars (e.g., 6) or other suitable electrical, conductors (not shown).
  • the sensor housing 1 2 includes a top 108, a bottom 1.10 disposed opposite the top 108, a first side ! 12. a second side 1 14 disposed opposite the first 1 12, a first end 1 16, and a second end 1 18 disposed opposite the first end 1 1.6.
  • the pegs 104.106 are shown extending outwardly from the first end 1 16 of the sensor housing 1.02. it will be appreciated, however, that the pegs 104,106 could alternatively be located on the top 108 of the sensor housing 1 2, or in any other known or suitable location (not shown).
  • the first end ⁇ 16 of the sensor housing 102 also includes a slot 120.
  • the example elongated strap 200 includes a first end 210 and second end 212 disposed opposite and distal from the first end 210.
  • the first end 210 has an enlarged Sip portion 220, as shown.
  • the enlarged lip portion 220 is structured to engage the sensor housing 102 at or about the slot 120 to prevent the elongated strap 200 from undesirably detaching from the sensor housing 102. That is, the first end 212 of the elongated strap 200 is inserted through the slot 120 and the strap 200 is adjusted with respect to the sensor housing 102 until it is in the final position, shown in Figure 3.
  • the elongated strap 200 preferably further includes a rib 222, which is disposed proximate to but spaced a predetermined distance 230 from the enlarged lip portion 220, as best shown in Figure 2.
  • the rib 222 and enlarged lip portion 220 are structured to cooperate with the sensor housing 102 to maintain the elongated strap 200 in a desired position with respect to the sensor housing 1 2.
  • the enlarged lip portion 220 serves to keep the elongated strap 200 from detaching from the sensor housing 102 in the pull-through direction
  • the rib 222 in combination with the enlarged lip portion 220 (and space 230 therebetween), serves to keep the elongated strap 200 from detaching from the sensor housing 102, or undesirably sliding in the opposite direction.
  • the rib 222 therefore, keeps the elongated, strap 200 from becoming loose, for example and without limitation, in shipment and/or during installation.
  • the elongated strap 200 is preferably made from a resilient material such as, for example and without limitation, silicone rubber. Such material allows for relatively quick and easy installation since the silicone rubber simply stretches around the bus bar 6 onto the sensor housing 102.
  • the design also allows for retro-fit applications, and ease of assembl and manufacture of the sensor attachment assembly 100.
  • the resilient nature of the elongated strap 200 in combination with the aforementioned adjustability thereof, also serves to ensure the secure attachment of the sensor 4 ( Figure I ) to bus bar 6, as shown in Figures I and 4-6. That is, in operation, the elongated strap 200 wraps around the bus bar 6 and attaches to the sensor housing 102, as best shown in Figure 6.
  • the bottom 1 10 of the sensor housing 102 is structured to engage the bus bar 6, and the elongated strap 200 is structured to extend through the aforementioned slot 120 in the sensor housing 102, around the bus bar 6, and over the top 1 8 of the sensor housing 1 2.
  • the elongated strap 200 is then fastened to the sensor housing 102 using the
  • the elongated strap 200 can optionail be cut to the desired length. That is. the elon g ated strap 200 can be cut and any excess length can be removed.
  • the sensor attachment assembly 1 0 is suitable for use in relatively high temperature environments (e.g., without, limitation, 135 degrees C bus bar temperatures; 65 degrees C ambient), and no modification of the bus bar 6 or other electrical conductor (not shown) is required.
  • relatively high temperature environments e.g., without, limitation, 135 degrees C bus bar temperatures; 65 degrees C ambient
  • no modification of the bus bar 6 or other electrical conductor (not shown) is required.
  • the adjustable resi lient elongated strap 200 of the sensor attachment assembly also advantageously securely attaches the sensor (e.g. , 4), without requiring the use of any separate fasteners.
  • the disclosed sensor attachment assembly 100 provides for a relatively low-profile design for relatively easily and quickly securely attaching a sensor 4 ( Figure i ⁇ to a wide variety of different
  • bus bar 6 e.g., without limitation, bus bar 6
  • FIGS 7-1 1 show one specific, but non-limiting example embodiment of a sensor attachment assembly 300 (Figures 7, 8, 10 and 1 ) for an electrical system 2' ( Figures 10 and 11), which employs a piezoelectric sensor assembly 400 for detecting loose connections in the electrical system 2'.
  • sensor attachment assembly 300 includes a sensor bousing 302 ( Figures 7 and 8; also shown in section view in Figures 10 and 1 1) and a fastening member 500 substantially similar to the aforementioned elongated strap 200 discussed above with respect to Figures 1-6.
  • the fastening member 500 fastens the sensor housing 302 to a corresponding electrical conductor 6' (e.g., without limitation, bus bar 6' of Figures 10 and i 1) in substantially the same manner discussed hereinabove.
  • the example piezoelectric sensor assembly 400 includes a processor 402 (shown in simplified form in Figure 9; see also, for example and without limitation, printed circuit board (PCB) 402 partially shown in Figures 10 and 1 1 ), which is structured to be enclosed by the sensor bousing 302, as shown in Figures 10 and 1 1.
  • PCB printed circuit board
  • the piezoeieciric sensor assembly 400 further includes a piezoelectric sensor element 404, a wiring assembly 406 for electrically connecting the piezoelectric sensor element 404 to the processor 402, an insulating member 408 coupled to the piezoelectric sensor element 404, and a mounting enclosure 410 structured to mount the piezoelectric sensor element 404 and the insulating member 408 to the sensor housing 302, as best shown in the section views of Figures 10 and 1 1.
  • the wirin assembly 406 in the example shown is unshielded. It will be appreciated, however, that shielded cable (not shown) could be employed, without departing from the scope of the disclosed concept.
  • the insulating member 408 is structured to extend outwardly from the sensor housing 302 to engage the corresponding bus bar 6', as shown in Figures 1 and 1 1.
  • the insulating member is a ceramic disc 408 having first and second opposing sides 412,414.
  • the first side 412 engages the corresponding bus bar 6'
  • the second side 414 includes a recess 416 structured, to receive the piezoelectric sensor element 404.
  • the piezoelectric sensor element 404 is preferably adhered to the second side 414 of the ceramic disc 408 with a suitable conductive adhesive (e.g., without limitation, conductive epoxy; conductive silicone adhesive). Accordingly, among other benefits, the disclosed piezoelectric sensor assembly 400 has a reduced part count, by eliminating the requirement for separate fasteners (e.g., without limitation, screws).
  • the refined design of the disclosed piezoelectric sensor assembly 400 not only has a reduced complexity and corresponding lower cost, but also has improved reliability and repeatability.
  • a larger piezoelectric sensor element 404 can he employed in the same amount of space, thereby advantageously increasing sensitivity.
  • the disclosed design also includes only one acoustic interface between the bus bar 6' (figures 10 and 1 1 ) and the piezoelectric sensor element 404 and, more specifically, the insulating member 408 thereof, thereby further increasing sensitivity.
  • the conductive adhesive serves the further advantageous purpose of creating a shield around the piezoelectric element 404, thereby minimizing undesirable electrical noise, in addition to the conductive adhesive, it will be appreciated that a conductive spray coating (e.g., without limitation, nickel or other metal or conductive spray coating or shield) could be applied to the area where the piezoelectric sensor element 404 is disposed.
  • a conductive spray coating e.g., without limitation, nickel or other metal or conductive spray coating or shield
  • Metal plating of the insulating member 408 e.g., without limitation, ceramic disc 408 is another foreseeable alternati e for providing the desired shielding properties.
  • the piezoelectric sensor element 404 of the example piezoelectric sensor assembly 400 is a cylindrical disc 404 including a first electrode 418 and a second electrode 420.
  • the wiring assembly 406 includes a first wire 422, a second wir 424, and an electrical connector 426.
  • the first end 428 of the first wire 422 is electrically connected to the first electrode 418
  • the first end 430 of the second wire 424 is electrically connected to the second electrode 420
  • the second ends 432,434 of the first and second wires 422,424, respectively are both electrically connected to the electrical connector 426.
  • the cylindrical disc 404 further includes first and second opposing ends 436,438 and a skiewall 440 extending therebetween.
  • the first electrode 418 is disposed on the sidewail 440 proximate to the first end 436 of the cylindrical disk 404, and the second electrode 420 is disposed on the second end 438 of the cylindrical disc 404.
  • the example processor 402 (shown in simplified form in Figure 9) is a printed circuit board (PCB) 402 (also partially shown in sectio view in Figures 10 and 1 1 ).
  • the aforementioned electrical connector 426 of the wiring assembly 406 is adapted to suitably electrically connect the piezoelectric sensor element 404 to the PCB 402.
  • the example wiring assembly 406 shown and described herein is unshielded, but suitable shielded cable (not shown) could be alternatively employed.
  • the example mounting enclosure is a shielding -member 410 having a cylindrical body 442, a thru hole 444 extending through a cylindrical body 442, and a flange 446 extending radially outwardly from the cylindrical body 442.
  • the cylindrical body 442 encloses and shields the piezoelectric sensor element 404, as best shown in the section views of Figures 1.0 and 1 1.
  • the shielding member 410 is preferably made from a material (e.g., without limitation, stainless steel) having the desired material properties (e.g., without limitation, electrical shielding capabilities).
  • the sleeve 452 functions to support and thereby reduce stress on the wires 422,424 of the wiring assembly 406 that could otherwise be caused by the edges of the thru hole 444,
  • the flange 446 is structured to cooperate with a corresponding portion 304 of the sensor housing 302
  • the shielding member 410 of the example piezoelectric sensor assembly 400 further includes a curved spring or wave spring washer 450 (best shown in Figure 9), which is structured to extend around the cylindrical body 442 between the flange 446 and the corresponding portion 304 of the sensor housing 302,
  • the curved spring or wave spring washer 450 functions to spring load the piezoelectric sensor assembl 400, as desired, for example and without limitation, to maintain the acoustic interface between the piezoelectric sensor assembly 400 and corresponding bus bar 6',
  • the disclosed piezoelectric sensor assembly 400 and sensor attachment assembly 300 therefor provide an efficient and effective mechanism for monitoring electrical conductors (e.g.. without limitation, bus bar 6') of electrical systems (e.g.. without limitation, 2') for loose connections.
  • the improved piezoelectric sensor assembly design effectively detects (i.e., senses) acoustic signals while reducing the number of components, complexity and associated cost, and also improving reliability, repeatability and sensitivity over prior art piezoelectric sensor assembly designs (not shown).

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne un ensemble capteur piézoélectrique (400) pour un système électrique (2'). Le système électrique (2') comprend un ensemble de fixation de capteur (300) et un certain nombre de conducteurs électriques (6'). L'ensemble de fixation de capteur (300) comprend un boîtier de capteur (302) et un élément de fixation (500) pour fixer le boîtier de capteur (302) à un conducteur correspondant des conducteurs électriques (6'). L'ensemble capteur piézoélectrique (400) comprend un processeur (402) enfermé par le boîtier de capteur (302), un élément de capteur piézoélectrique (404), un ensemble câblage (406) reliant électriquement l'élément de capteur piézoélectrique (404) au processeur (402), un élément isolant (408) couplé à l'élément de capteur piézoélectrique (404) et structuré pour s'étendre vers l'extérieur depuis le boîtier de capteur (302) pour mettre en prise un conducteur correspondant des conducteurs électriques (6'), et une enceinte de montage (410) structurée pour monter l'élément de capteur piézoélectrique (404) et l'élément isolant (408) sur le boîtier de capteur (302).
PCT/US2015/013401 2014-08-12 2015-01-29 Ensemble capteur piézoélectrique, et ensemble de fixation de capteur et système électrique le comprenant WO2016025022A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112015003721.7T DE112015003721T5 (de) 2014-08-12 2015-01-29 Piezoelektrische Sensoranordnung und Sensoranbringungsanordnung und elektrisches System das diese einsetzt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/457,625 US9933285B2 (en) 2014-03-21 2014-08-12 Piezoelectric sensor assembly, and sensor attachment assembly and electrical system employing same
US14/457,625 2014-08-12

Publications (1)

Publication Number Publication Date
WO2016025022A1 true WO2016025022A1 (fr) 2016-02-18

Family

ID=52472606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/013401 WO2016025022A1 (fr) 2014-08-12 2015-01-29 Ensemble capteur piézoélectrique, et ensemble de fixation de capteur et système électrique le comprenant

Country Status (2)

Country Link
DE (1) DE112015003721T5 (fr)
WO (1) WO2016025022A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018554A1 (fr) * 1999-09-02 2001-03-15 Transgrid Systeme de surveillance des decharges partielles survenant dans des transformateurs
EP2442123A2 (fr) * 2010-10-18 2012-04-18 Eaton Corporation Appareil acoustique et appareil de capteur acoustique incluant une pince
US8665666B2 (en) 2010-10-18 2014-03-04 Eaton Corporation Acoustic apparatus and acoustic sensor apparatus including a fastener

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018554A1 (fr) * 1999-09-02 2001-03-15 Transgrid Systeme de surveillance des decharges partielles survenant dans des transformateurs
EP2442123A2 (fr) * 2010-10-18 2012-04-18 Eaton Corporation Appareil acoustique et appareil de capteur acoustique incluant une pince
US20120092020A1 (en) 2010-10-18 2012-04-19 Xin Zhou Acoustic apparatus and acoustic sensor apparatus including a clamp
US8665666B2 (en) 2010-10-18 2014-03-04 Eaton Corporation Acoustic apparatus and acoustic sensor apparatus including a fastener

Also Published As

Publication number Publication date
DE112015003721T5 (de) 2017-04-27

Similar Documents

Publication Publication Date Title
US9966704B2 (en) Fixing structure of shield connector
US6680433B2 (en) Electromagnetic shielding structure
US7699646B2 (en) Cable connector assembly
US8051712B2 (en) Electronic stator end winding accelerometer sensor
US11404828B2 (en) Connector assembly
JP2009236641A (ja) 電流センサ装置
JP5897091B1 (ja) シールドケース
CA2831823C (fr) Ensemble support de fixation pour un cable electrique
WO2016117404A1 (fr) Capteur myoélectrique
JP2009288035A (ja) 部分放電検出装置
KR20130103563A (ko) 커넥터 어셈블리 및 이를 이용한 연결 시스템
US9933285B2 (en) Piezoelectric sensor assembly, and sensor attachment assembly and electrical system employing same
WO2016025022A1 (fr) Ensemble capteur piézoélectrique, et ensemble de fixation de capteur et système électrique le comprenant
KR102257915B1 (ko) 클립 인 지지 링
WO2015142447A1 (fr) Système électrique et ensemble de fixation de capteur et procédé associé
US9413102B1 (en) Electrical connector assembly for data traces on a structural surface
US9078356B2 (en) Electrical component device
KR102249090B1 (ko) Pe-접점을 갖는 장착 프레임
CN102640237A (zh) 组合接线器和电流变压器
KR101402202B1 (ko) 케이블 클립
JP2005167052A (ja) シールド電線のアース接続構造
EP3451648A3 (fr) Module d'imagerie et unité de faisceau
KR101150168B1 (ko) 케이블 고정접속 장치
KR100797221B1 (ko) 전기적 접촉 신뢰성이 우수한 실드커넥터
JP2002216915A (ja) シールド電線のシールド端子のグランド構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15704649

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 112015003721

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15704649

Country of ref document: EP

Kind code of ref document: A1