WO2006087253A1 - Support de fixation pour un equipement embarque dans un aeronef - Google Patents

Support de fixation pour un equipement embarque dans un aeronef Download PDF

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Publication number
WO2006087253A1
WO2006087253A1 PCT/EP2006/050353 EP2006050353W WO2006087253A1 WO 2006087253 A1 WO2006087253 A1 WO 2006087253A1 EP 2006050353 W EP2006050353 W EP 2006050353W WO 2006087253 A1 WO2006087253 A1 WO 2006087253A1
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WO
WIPO (PCT)
Prior art keywords
resistance
resistor
layer
value
bridges
Prior art date
Application number
PCT/EP2006/050353
Other languages
German (de)
English (en)
Inventor
Detlef Heimann
Henrico Runge
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2006087253A1 publication Critical patent/WO2006087253A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • H01C17/23—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by opening or closing resistor geometric tracks of predetermined resistive values, e.g. snapistors

Definitions

  • the invention is based on a method for matching the resistance value of an electrical resistance embedded in a layer composite to a standard value according to the preamble of claim 1.
  • Embedded resistor sandwich composites are used in 20 different applications, such as in temperature sensors e.g. for measuring the
  • the resistance value of the resistance path which is usually low-resistance, to move within a narrow tolerance range, in order to avoid over- or under-control of the heating device. Since production-related the required narrow tolerance range can not be met, in both cases, a subsequent adjustment the resistance value of the resistance track, so a trimming of the finished layer composite required by appropriate measures.
  • a recess is left in the layers covering the resistor layer, through which a treatment of the resistance path for adjusting the resistance value is performed becomes.
  • the resistance path has branches and / or closed areas in the region of the recess, and the alignment is achieved by forming the branches and / or closed surfaces, e.g. be melted by a laser, which increases the resistance of the resistance path. This is continued until the desired default value is reached.
  • the resistance value is continuously measured via a circuit arrangement connected to the resistance track.
  • the recess is closed by a filler in order to protect the resistance path from mechanical or chemical inclusions.
  • the filler used is preferably a glass ceramic, which is glazed after filling by thermal action of the laser.
  • the erf ⁇ ndungssiee method with the feature of claim 1 has the advantage that the adjustment of the resistance in the finished layer composite can be performed without special measures that would have to be initiated in the production of the layer composite, such as the provision of recesses in individual layers of the composite layer. Only the layout of the manufactured resistor demands are made.
  • the adjustment takes place by simple mechanical grinding of the body laminated together from the layers at its narrow longitudinal and / or transverse sides, which are referred to below as edges of the layer composite. Edge grinding is a standard process when manufacturing gaskets or temperature sensors.
  • one or the other selected shorting bridge is partially or completely abraded depending on the location and grinding depth and thus separated, so that the previously bridged balancing resistor is now in series with the main resistance and the resistance of the main resistance is increased by the defined resistance value of the trimming resistor.
  • the Separation of short-circuiting bridges is carried out by grinding at different edges with different grinding depths until the setpoint value of the resistance in the layered composite is reached by successive connection of balancing resistors to the main resistance.
  • a post-processing of the composite layer such as the above-described closing of the adjustment holes in the layers of the composite layer, is not required with a suitable material selection for the balancing resistors. Overall, the method is compared to the known methods manufacturing technology very inexpensive and can be advantageously integrated into the automatic manufacturing process.
  • the resistance value of the embedded resistor is measured on the finished layer composite and the number and the position of the short-circuit bridges to be separated are determined from the difference between the default value and the measured value.
  • the measurement of the resistance value, the calculation of the resistance difference and the determination of the short-circuiting bridges to be separated can take place automatically when gripping the layered composite by the arm of a grinding robot.
  • a layer composite treated by the process according to the invention is specified in claim 9.
  • Advantageous developments and improvements of the layer composite specified in claim 9 include the further claims 10 to 15.
  • the layer composite according to the invention can be used both in a temperature sensor for measuring the temperature of a medium, in particular the exhaust gas temperature of an internal combustion engine, and in a gas sensor for measuring the concentration of a gas component in a gas mixture, such as the oxygen concentration or the nitrogen oxide concentration in the exhaust gas of an internal combustion engine ,
  • the resistance value of the embedded resistor becomes more high-impedance, eg 100 ⁇ , and in the second case more low-impedance.
  • the resistor material used is preferably platinum or a platinum cermet.
  • 1 is an exploded view of a layer composite with embedded electrical resistance
  • FIG. 3 is a perspective top view of the resistor in a modified layout
  • FIG. 4 is a fragmentary perspective view of an electric heater for a gas sensor
  • FIG. 5 shows a section along the line V - V in Fig. 4th
  • the layer composite schematically sketched in exploded view in FIG. 1 forms the measurement-sensitive part of a temperature sensor, also called a resistance thermometer, for measuring the temperature of a medium, in particular the exhaust gas temperature of internal combustion engines.
  • the layer composite is composed of a preferably formed as a film ceramic layer 11 based on solid electrolyte, for example yttriumstabilieriem zirconium oxide (ZrO 2 ), a first insulating layer 12 of electrically insulating material, such as alumina Al 2 O 3 , a second insulating layer 13 of the same insulating material and a second, preferably formed as a film ceramic layer 14 based on solid electrolyte.
  • ZrO 2 yttriumstabiltekem zirconium oxide
  • a third insulating layer 15 is printed on the upper side of the first ceramic layer 11, the first insulating layer 12 and a hermetically sealing frame 18 and on the back of the first ceramic layer 11 in the region of electrical contacts 16 réelleyakenden.
  • a third insulating layer 15 is printed on the ceramic layer 11.
  • an electrical Resistor 20 is applied, which is divided into a main resistance 21 and a plurality of balancing resistors 22.
  • Main resistance 21 and balancing resistors 22 are printed as resistance tracks on the first insulating layer 12.
  • the resistor 20 is connected via conductor tracks 23, 24 with contact surfaces 25, 26, which are contacted via the through-holes 17 to the electrical contacts 16, which are printed on the back of the first ceramic layer 11 on the third insulating layer 15.
  • the second insulating layer 13 and a hermetically sealing frame 19 is printed on the second ceramic layer 14, the second insulating layer 13 and a hermetically sealing frame 19 is printed.
  • the two ceramic layers 11, 14 thus treated are superimposed so that the frames 18 and 19
  • the resistance values are advantageously kept small.
  • Fig. 2 an exemplary layout of the resistance formed by the resistor tracks 20 is shown enlarged, the z. B. should have a resistance of 100 ⁇ in close tolerances. For manufacturing reasons, however, the resistance of 100 ⁇ can only be guaranteed within the limits of 90 ⁇ to 110 ⁇ , which does not meet the requirements.
  • the main resistance 21 formed by the Bruffleander 27 is therefore made by way of example with a resistance of 90 ⁇ , in turn, only a tolerance of ⁇ 10% can be maintained in the production.
  • a first balancing resistor 221 is fabricated as a resistive track having a resistance of 10 ⁇ by way of example.
  • Four additional balancing resistors 222 are exemplified as resistive tracks having a resistance of 2 ⁇ , and a third balancing resistor 223 is exemplified as a resistive track having a resistance of 1 ⁇ .
  • the manufacturing spread of the printed balancing resistors 22 is at most 10%. All balancing resistors 22 are connected to each other in series and in series with the main resistor 21. All
  • Balancing resistors 22 are bridged with shorting bridges 28, which are guided to near the edges of the layer composite.
  • the bridging bridge 28 bridging the balancing resistor 221 is close to the left longitudinal edge 29 of the laminar structure, which forms the Adjustment resistor 223 bridging shorting bridge 28 to close to the right longitudinal edge 30 of the composite and the four trimming resistors 222 bridging shorting bars 28 out to near the front edge 31 of the laminar.
  • the balancing resistors 222 bridging shorting bars 28 are lined up along the front edge 31 with different transverse distance to the end edge 31 side by side.
  • the resistance value 20 is adjusted to the default value in a subsequent method step.
  • this default value is 100 ⁇ , and in the application of the resistor tracks to the insulating layer 12 is according to this
  • Default - as already stated above - made the main resistance 21 with 90 ⁇ ⁇ 10%.
  • the resistor tracks of the balancing resistors 22 these have the resistance values of 10 ⁇ , 2 ⁇ and 1 ⁇ indicated in the example given above.
  • its resistance value is first measured and the difference between the default value of 100 ⁇ and the measured value, for example 95 ⁇ , determines the number and position of the balancing resistors 22 to be added and thus the short-circuit bridges 28 to be split.
  • two equalization resistors 222 of 2 ⁇ each and a balancing resistor 223 of 1 ⁇ are required.
  • FIG. 3 shows a modified layout of the resistor 20 subdivided into main resistor 21 and balancing resistors 22.
  • the first ceramic layer 11 and this covering the first insulating layer 12 can be seen, on which the resistor 20 is printed again in the form of resistance paths.
  • the insulating layer 13 and the second ceramic layer 14 are removed from the laminate to visualize the layout of the embedded resistor 20.
  • the main resistance 21 is again designed as a web meander 27 with a plurality of meander loops 271.
  • the Bahnffleander 27 is connected via the connecting lines 23 and 24 with the contact surfaces 25, 26, which are plated through the through-holes 17 in the first ceramic layer 11 to the electrical contacts 16 for connecting a voltage source.
  • the meander loops 271 are aligned transversely to the longitudinal edge 29 of the layer composite, so that the number of meander loops 271 can be selected to be quite large.
  • the balancing resistors 22 are here formed by selected meander loops 271 which are bridged by short-circuit bridges 28.
  • the shorting bridges 28 are arranged with respect to the longitudinal edge 29 of the layer composite so that they can be selectively separated by abrading the right in Fig. 3 longitudinal edge 29 of the composite layer.
  • a total of four shorting bridges 28 different transverse distances to the longitudinal edge 29, so that when grinding the longitudinal edge 29 first in Fig. 3 rearmost jumper 28 and then with increasing Abschleifiefe the other forward adjoining shorting bridges 28 are separated successively ,
  • Adjustment process is also determined here first by applying a voltage source to the electrical contacts 16 and measuring the current flowing through the Bruffleander 27 current, the resistance of the resistor 20, wherein the Bruffleander 27 was designed during manufacture so that its resistance value without the shorted meander loops 271 in in any case, less than the default resistance. From the measured resistance value, it is possible to determine the (mean) resistance value of each meander loop 271 and thus to determine the resistance value of the balancing resistors 22. Depending on the size of the difference between the default value and the measured value of the resistor 20 are accordingly many Shorted bridges 28 and thus the resistance of the resistor 20 changed until the default value is reached.
  • FIGS. 4 and 5 show a layer composite formed as described for an electrical heating device for a gas sensor for determining the concentration of a gas component in a gas mixture, for example for a planar lambda probe for measuring the oxygen concentration in the exhaust gas of an internal combustion engine.
  • a low-resistance resistor 20 is embedded as an electrical heating resistor between the two insulating layers 12 and 13, which are received between the first ceramic layer 11 and the second ceramic layer 14 and enclosed by the frame 18 of a solid electrolyte.
  • resistance paths resistance 20 is formed in the same manner as described above and is adjusted in the same manner after production of the composite layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

L'invention concerne un support de fixation (200) pour un équipement embarqué (300) dans un aéronef, comprenant une partie fixe (210), une partie mobile (250), et des moyens de liaison (231, 232) entre la partie fixe (210) et la partie mobile (250), la partie mobile (250) comprenant des moyens de raccordement électriques (256) destinés à être mis en prise avec des moyens de raccordement électriques complémentaires de l'équipement (300), les moyens de liaison (231, 232) étant agencés de sorte que la partie mobile (250) est déplaçable par rapport à la partie fixe (210) entre une position ouverte permettant de disposer l'équipement (300) sur la partie fixe (210), et une position fermée, le déplacement de la partie mobile (250) de la position ouverte à la position fermée provoquant la mise en prise des moyens de raccordement électriques de la partie mobile et de l'équipement.
PCT/EP2006/050353 2005-02-21 2006-01-23 Support de fixation pour un equipement embarque dans un aeronef WO2006087253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007804.4A DE102005007804B4 (de) 2005-02-21 2005-02-21 Verfahren zum Abgleichen des Widerstandswertes eines in einem Schichtverbund eingebetteten, elektrischen Widerstands und Schichtverbund mit einem eingebetteten, elektrischen Widerstand
DE102005007804.4 2005-02-21

Publications (1)

Publication Number Publication Date
WO2006087253A1 true WO2006087253A1 (fr) 2006-08-24

Family

ID=36032138

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/050353 WO2006087253A1 (fr) 2005-02-21 2006-01-23 Support de fixation pour un equipement embarque dans un aeronef

Country Status (2)

Country Link
DE (1) DE102005007804B4 (fr)
WO (1) WO2006087253A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2417466A1 (de) * 1974-04-10 1975-10-23 Draloric Electronic Abgleichbares elektrisches bauelement
DE2831590A1 (de) * 1977-07-19 1979-02-01 Lignes Telegraph Telephon Schichtwiderstand
US4386460A (en) * 1981-05-14 1983-06-07 Bell Telephone Laboratories, Incorporated Method of making multi-megohm thin film resistors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6804800U (de) * 1968-10-31 1971-10-28 Telefunken Patent Gedrucktes elektrisches bauteil, insbesondere schichtwiderstand.
DE3733192C1 (de) 1987-10-01 1988-10-06 Bosch Gmbh Robert PTC-Temperaturfuehler sowie Verfahren zur Herstellung von PTC-Temperaturfuehlerelementen fuer den PTC-Temperaturfuehler
DE19838466A1 (de) 1998-08-25 2000-03-02 Bosch Gmbh Robert Verfahren zum Ansteuern eines Meßfühlers zum Bestimmen einer Sauerstoffkonzentration in einem Gasgemisch
DE19851966A1 (de) 1998-11-11 2000-05-18 Bosch Gmbh Robert Keramisches Schichtsystem und Verfahren zur Herstellung einer keramischen Heizeinrichtung
DE10260852B4 (de) 2002-12-23 2011-05-05 Robert Bosch Gmbh Verfahren zum Abgleichen des elektrischen Widerstands einer Widerstandsbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2417466A1 (de) * 1974-04-10 1975-10-23 Draloric Electronic Abgleichbares elektrisches bauelement
DE2831590A1 (de) * 1977-07-19 1979-02-01 Lignes Telegraph Telephon Schichtwiderstand
US4386460A (en) * 1981-05-14 1983-06-07 Bell Telephone Laboratories, Incorporated Method of making multi-megohm thin film resistors

Also Published As

Publication number Publication date
DE102005007804A1 (de) 2006-08-24
DE102005007804B4 (de) 2019-06-06

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