EP1334342A1 - Pressure sensor module - Google Patents

Pressure sensor module

Info

Publication number
EP1334342A1
EP1334342A1 EP01992877A EP01992877A EP1334342A1 EP 1334342 A1 EP1334342 A1 EP 1334342A1 EP 01992877 A EP01992877 A EP 01992877A EP 01992877 A EP01992877 A EP 01992877A EP 1334342 A1 EP1334342 A1 EP 1334342A1
Authority
EP
European Patent Office
Prior art keywords
pressure sensor
housing
sensor module
module according
recess
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.)
Withdrawn
Application number
EP01992877A
Other languages
German (de)
French (fr)
Inventor
Winfried Kuhnt
Martin Mast
Masoud Habibi
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.)
Robert Bosch GmbH
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 EP1334342A1 publication Critical patent/EP1334342A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/141—Monolithic housings, e.g. molded or one-piece housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/069—Protection against electromagnetic or electrostatic interferences
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched

Definitions

  • the invention is based on a pressure sensor module according to the preamble of claim 1.
  • a pressure sensor device which has a semiconductor chip with a pressure sensor.
  • the arrangement is intended for mounting on a printed circuit board.
  • the electrical connections of the semiconductor chip are not injected airtight in the plastic of the housing. If there is a negative pressure in the area of the pressure sensor in relation to the outside area, air is drawn into the gel along the connections . pulled and leads to a mechanical load on the bond wires or bond connections. In addition, the separating element falsifies the pressure characteristic of the semiconductor chip due to its not negligible rigidity. With higher demands on the measuring accuracy, an enlargement of the membrane diameter and a reduction of the membrane thickness are necessary. This affects the miniaturization.
  • a pressure sensor chip is known from mstnews 2/99, pages 8 to 9, which is mounted as an individual part in a pressure sensor module housing and fastened there. A calibration of the pressure sensor is only possible after mounting the pressure sensor chip, since the mounting of the
  • Pressure sensor chips and passivation with the aid of an opacifying agent influenced a calibration curve.
  • the entire module housing with the attached pressure sensor must be exposed to different temperatures and pressures in order to carry out a calibration. This is very expensive due to the long waiting time for heating the large sensor housing and due to the low packing density during the adjustment.
  • the reject during calibration is only detected after the sensor chip has been installed. In this case, the expensive pressure sensor module housing can no longer be used. This increases the reject costs.
  • a pressure sensor module is known from DE 197 314 20 AI, in which the pressure sensor is closed in a pressure-tight manner by a cover. This type of assembly as well as the use of a ceramic substrate is complex. In addition, the frame that encompasses the gel must be attached to the ceramic substrate.
  • the pressure sensor module according to the invention with the characterizing features of claim 1 has the advantage that a pressure sensor is mounted in a module housing in a simple manner and a pressure sensor module can be manufactured.
  • a sensor housing is advantageously made of plastic, because this is easy to manufacture.
  • connection elements are at least partially enclosed by the sensor housing, as a result of which they are held and a passage of the connection elements through the sensor housing is achieved.
  • the sensor housing In order to protect a pressure sensor in its sensor housing from external environmental influences and to encapsulate it in a pressure-tight manner, the sensor housing is enclosed by a casting compound.
  • the sealing compound also ensures a gas-tight passage of the connection elements.
  • the pressure sensor has elements for improving the electromagnetic compatibility.
  • Capacitors as elements for improving the electromagnetic compatibility, are connected electrically and mechanically in an advantageous manner by conductive adhesive, soldering or welding on the electrical connections.
  • a media-resistant gel such as, for example, is advantageously used as a covering agent for the pressure sensor chip.
  • TTluor Silicone Gel used, so that other protective measures are not necessary.
  • FIG. 1 shows a first embodiment of a pressure sensor module designed according to the invention
  • FIG. 2 shows a second embodiment of a pressure sensor module designed according to the invention
  • FIG. 3 shows a third embodiment of a pressure sensor module designed according to the invention.
  • FIG. 1 shows a first exemplary embodiment of a pressure sensor module 1 according to the invention.
  • the pressure sensor module 1 consists, among other things, of a module housing 3 in which a pressure sensor 6, for example in the form of a sensor chip, is arranged in a sensor housing 8.
  • the pressure sensor 6 is in contact with a medium 10 to be measured, which reaches the pressure sensor 6, for example, via a connector 33.
  • the sensor housing 8 has, for example, a U-Forr ⁇ , the opening of the U-shape being connected to the medium 10 to be measured and completely enclosing an opening 11 of the connecting piece 33.
  • the pressure sensor 6 is covered in its sensor housing 8 by a covering agent, for example a gel, and is thus protected.
  • the sensor housing 8 is arranged, for example, in a recess 15 in the module housing 3 and, for example, completely enclosed by a casting compound 17.
  • the casting compound 17 seals the sensor housing 8 and the module housing 3 in such a way that a medium 10 to be measured does not get into the recess 15.
  • the casting compound 17 to be hardened can hold the sensor housing 8 in the recess 15 and also seals the electrical connections 21 running through the sensor housing 8.
  • a lid that encapsulates the recess 15 in an airtight manner and protects it from external influences can be dispensed with here.
  • the pressure sensor 6 is connected by bonding wires 19 to the electrical connection elements 21, which establish the connection to external electrical plug elements 25.
  • the plug elements 25 serve to connect to an electronic control.
  • the connection point 23 of the connector elements 25 with the connecting elements 21, produced by welding or soldering, is also in the recess 15 in the casting compound 17th
  • the capacitors 27 are, for example, by means of conductive adhesive,
  • the capacitors 27 are arranged, for example, directly on the connection point 23.
  • FIG. 2 shows a further exemplary embodiment of a pressure sensor module 1 according to the invention.
  • the module housing 3 has, in addition to the recess 15, a trough 35 through which the plug elements 25 or the electrical connection elements 21 run.
  • the capacitors 27 are electrically connected in the trough 35 on the plug elements 25 and are enclosed and protected by a casting compound 17.
  • the connection point 23 can also be arranged in the trough 35.
  • capacitors 27 are spatially further away from the welded connection point 23 of the plug elements 25 and connection elements 21 compared to FIG. 1, they can also be electrically connected to the electrical connection elements 21 or the plug elements 25 by soldering or gluing.
  • the module housing 3 also has, for example, the socket 33 with a sealing ring 29, so that the socket 33 can be inserted into a further component which contains the medium 10 to be measured.
  • the connector 33 is sealed off from the component by the sealing ring 29, so that the medium 10 to be measured in the component only comes into contact with the pressure sensor 6 and cannot escape the component at the assembly point of the connector 33.
  • the pressure sensor module 1 can furthermore have a temperature sensor 40, for example an NTC resistor.
  • FIG. 3 shows a further exemplary embodiment of the pressure sensor module 1 according to the invention, starting from FIG. 2.
  • the welded connection point 23 lies in the trough 35, so that the elements 27 are arranged as close as possible to the pressure sensor 6, that is to say in the depression 15.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A prior art pressure sensor module has to be sealed in a pressure-tight manner by means of a cover, whereby rendering the sealing process complicated. However, an inventive pressure sensor module (1) has a pressure sensor (6) located inside a sensor housing (8), can be easily mounted and is already calibrated.

Description

DrucksensormodulPressure sensor module
Stand der TechnikState of the art
Die Erfindung geht aus von einem Drucksensormodul nach der Gattung des Anspruchs 1.The invention is based on a pressure sensor module according to the preamble of claim 1.
Aus der WO 98/00692 AI ist eine Drucksensorvorrichtung bekannt, die einen Halbleiterchip mit einem Drucksensor aufweist . Die Anordnung ist für die Montage auf einer Leiterplatte vorgesehen.From WO 98/00692 AI a pressure sensor device is known which has a semiconductor chip with a pressure sensor. The arrangement is intended for mounting on a printed circuit board.
Die elektrischen Anschlüsse des Halbleiterchips sind nicht im Kunststoff des Gehäuses luftdicht eingespritzt. Bei Vorhandensein eines Unterdrucks im Bereich des Drucksensors gegenüber dem Aussenbereich wird Luft entlang den Anschlüssen in das Gel .gezogen und führt zu einer mechanischen Belastung der Bonddrähte bzw. Bondverbindungen. Ausserdem verfälscht die Trenn em ran infolge ihrer nicht zu vernachlässigenden Steifigkeit die Druckkennlinie des Halbleiterchips. Bei höheren Anforderungen an die Messgenauigkeit ist daher eine Vergrösserung des Membrandurchmessers sowie eine Reduzierung der Membrandicke notwendig. Dieses beeinträchtigt die Miniaturisierung. Aus den mstnews 2/99, Seiten 8 bis 9, ist ein Drucksensorchip bekannt, der als Einzelteil in ein Drucksensormodulgehäuse montiert und dort befestigt wird. Eine Kalibrierung des Drucksensors ist erst nach Montage des Drucksensorchips möglich, da die Montage desThe electrical connections of the semiconductor chip are not injected airtight in the plastic of the housing. If there is a negative pressure in the area of the pressure sensor in relation to the outside area, air is drawn into the gel along the connections . pulled and leads to a mechanical load on the bond wires or bond connections. In addition, the separating element falsifies the pressure characteristic of the semiconductor chip due to its not negligible rigidity. With higher demands on the measuring accuracy, an enlargement of the membrane diameter and a reduction of the membrane thickness are necessary. This affects the miniaturization. A pressure sensor chip is known from mstnews 2/99, pages 8 to 9, which is mounted as an individual part in a pressure sensor module housing and fastened there. A calibration of the pressure sensor is only possible after mounting the pressure sensor chip, since the mounting of the
Drucksensorchips sowie eine Passivierung mit Hilfe eines Deckmittels eine Kalibrierungskurve beeinflusst. Zum Kalibrieren muß also das gesamte Modulgehäuse mit dem befestigten Drucksensor verschiedenen Temperaturen und Drücken ausgesetzt werden, um eine Kalibrierung vorzunehmen. Dies ist aufgrund der langen Wartezeit zum Erwärmen des großen Sensorgehäuses sowie aufgrund der geringen Packungsdichte beim Abgleich sehr aufwendig.Pressure sensor chips and passivation with the aid of an opacifying agent influenced a calibration curve. For calibration, the entire module housing with the attached pressure sensor must be exposed to different temperatures and pressures in order to carry out a calibration. This is very expensive due to the long waiting time for heating the large sensor housing and due to the low packing density during the adjustment.
Außerdem wird beim bekannten Drucksensor der Ausschuß beim Kalibrieren erst nach der Montage des Sensorchips detektiert. In diesem Fall kann das teure Drucksensormodulgehäuse nicht mehr verwendet werden. Dies erhöht die Ausschußkosten.In addition, in the known pressure sensor, the reject during calibration is only detected after the sensor chip has been installed. In this case, the expensive pressure sensor module housing can no longer be used. This increases the reject costs.
Aus der DE 197 314 20 AI ist ein Drucksensormodul bekannt, bei dem der Drucksensor durch einen Deckel druckdicht abgeschlossen ist. Diese Art der Montage ebenso wie die Verwendung eines Keramiksubstrats ist aufwendig. Ausserdem muss der Rahmen, der das Gel umfasst, extra auf dem Kerarαiksubstrat befestigt werden.A pressure sensor module is known from DE 197 314 20 AI, in which the pressure sensor is closed in a pressure-tight manner by a cover. This type of assembly as well as the use of a ceramic substrate is complex. In addition, the frame that encompasses the gel must be attached to the ceramic substrate.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Drucksensormodul mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß auf einfache Art und Weise ein Drucksensor in einem Modulgehäuse montiert ist und ein Drucksensormodul hergestellt werden kann. Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 genannten Drucksensormoduls, möglich.The pressure sensor module according to the invention with the characterizing features of claim 1 has the advantage that a pressure sensor is mounted in a module housing in a simple manner and a pressure sensor module can be manufactured. By the provisions recited in the dependent claims, advantageous refinements of and improvements to the features mentioned in claim 1 the pressure sensor module, is possible.
Vorteilhafterweise besteht ein Sensorgehäuse aus Kunststoff, weil dies leicht herzustellen ist.A sensor housing is advantageously made of plastic, because this is easy to manufacture.
Auf vorteilhafte Weise sind elektrische Anschlußelemente von dem Sensorgehäuse zumindest teilweise umschlossen, wodurch sie gehalten werden und ein Durchgang der Anschlusselemente durch das Sensorgehäuse erreicht wird.Advantageously, electrical connection elements are at least partially enclosed by the sensor housing, as a result of which they are held and a passage of the connection elements through the sensor housing is achieved.
um einen Drucksensor in seinem Sensorgehäuse auf vorteilhafte Weise vor äußeren Umgebungseinflüssen zu schützen und druckdicht abzukapseln, wird das Sensorgehäuse durch eine Vergußmasse umschlossen. Durch die Vergußmasse wird ferner ein gasdichter Durchgang der Anschlusselemente erreicht.In order to protect a pressure sensor in its sensor housing from external environmental influences and to encapsulate it in a pressure-tight manner, the sensor housing is enclosed by a casting compound. The sealing compound also ensures a gas-tight passage of the connection elements.
Es ist vorteilhaft, wenn der Drucksensor Elemente zur Verbesserung der elektromagnetischen Verträglichkeit aufweist.It is advantageous if the pressure sensor has elements for improving the electromagnetic compatibility.
Kondensatoren, als Elemente zur Verbesserung der elektromagnetischen Verträglichkeit, werden auf vorteilhafte Weise durch Leitkleber, Löten oder Schweißen auf den elektrischen Anschlüssen elektrisch und mechanisch verbunden.Capacitors, as elements for improving the electromagnetic compatibility, are connected electrically and mechanically in an advantageous manner by conductive adhesive, soldering or welding on the electrical connections.
Als Deckmittel für den Drucksensorchip wird vorteilhafter Weise ein medienresistentes Gel wie z .B . TTluor-Silikon-Gel verwendet,, so dass andere Schutzmassnahmen nicht notwendig sind.A media-resistant gel such as, for example, is advantageously used as a covering agent for the pressure sensor chip. TTluor Silicone Gel used, so that other protective measures are not necessary.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description.
Es zeigenShow it
Figur 1 ein erstes Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Drucksensormoduls, Figur 2 ein zweites Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Drucksensormoduls, und Figur 3 ein drittes Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Drucksensormoduls.1 shows a first embodiment of a pressure sensor module designed according to the invention, FIG. 2 shows a second embodiment of a pressure sensor module designed according to the invention, and FIG. 3 shows a third embodiment of a pressure sensor module designed according to the invention.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Figur 1 zeigt -ein erstes Ausführungsbeispiel eines erfindungsgemäßen Drucksensormoduls 1.FIG. 1 shows a first exemplary embodiment of a pressure sensor module 1 according to the invention.
Das Drucksensormodul 1 besteht unter anderem aus einem Modulgehäuse 3, in dem ein Drucksensor 6, bspw. in Form eines Sensorchips, in einem Sensorgehäuse 8 angeordnet ist. Dabei steht der Drucksensor 6 in Kontakt mit einem zu messenden Medium 10, das bspw. über einen Stutzen 33 zum Drucksensor 6 gelangt. Das Sensorgehäuse 8 hat bspw. eine U- Forrα, wobei die Öffnung- der U-Form in Verbindung mit dem zu messenden Medium 10 steht und eine Öffnung 11 des Stutzens 33 vollständig umschliesst.The pressure sensor module 1 consists, among other things, of a module housing 3 in which a pressure sensor 6, for example in the form of a sensor chip, is arranged in a sensor housing 8. The pressure sensor 6 is in contact with a medium 10 to be measured, which reaches the pressure sensor 6, for example, via a connector 33. The sensor housing 8 has, for example, a U-Forrα, the opening of the U-shape being connected to the medium 10 to be measured and completely enclosing an opening 11 of the connecting piece 33.
Der Drucksensor 6 ist in seinem Sensorgehäuse 8 durch ein Deckmittel, beispielsweise ein Gel, abgedeckt und so geschützt. Das Sensorgehäuse 8 ist beispielsweise in einer Vertiefung 15 des Modulgehäuses 3 angeordnet und bspw. durch eine Gußmasse 17 vollständig umschlossen. Die Gußmasse 17 dichtet das Sensorgehäuse 8 und das Modulgehäuse 3 so ab, daß ein zu messendes Medium 10 nicht in die Vertiefung 15 gelangt. Ausserdem kann die auszuhärtende Gussmasse 17 das Sensorgehäuse 8 in der Vertiefung 15 halten und dichtet auch die durch das Sensorgehäuse 8 verlaufenden elektrischen Anschlüsse 21 ab. Auf einen Deckel, der die Vertiefung 15 luftdicht abkapselt und vor äußeren Einflüssen schützt, kann hier verzichtet werden.The pressure sensor 6 is covered in its sensor housing 8 by a covering agent, for example a gel, and is thus protected. The sensor housing 8 is arranged, for example, in a recess 15 in the module housing 3 and, for example, completely enclosed by a casting compound 17. The casting compound 17 seals the sensor housing 8 and the module housing 3 in such a way that a medium 10 to be measured does not get into the recess 15. In addition, the casting compound 17 to be hardened can hold the sensor housing 8 in the recess 15 and also seals the electrical connections 21 running through the sensor housing 8. A lid that encapsulates the recess 15 in an airtight manner and protects it from external influences can be dispensed with here.
Der Drucksensor 6 ist mit Bonddrähten 19 mit den elektrischen Anschlußelementen 21 verbunden, die die Verbindung zu äußeren elektrischen Steckerelementen 25 herstellen. Die Steckerelemente 25 dienen zur Verbindung an eine elektronische Steuerung. Die Verbindungsstelle 23 der Steckerlemente 25 mit den Anschlussele enten 21, hergestellt durch Schweissen oder Löten, liegt ebenfalls in der Vertiefung 15 in der Vergussmasse 17.The pressure sensor 6 is connected by bonding wires 19 to the electrical connection elements 21, which establish the connection to external electrical plug elements 25. The plug elements 25 serve to connect to an electronic control. The connection point 23 of the connector elements 25 with the connecting elements 21, produced by welding or soldering, is also in the recess 15 in the casting compound 17th
Das Drucksensormodul 1 weist in der Vertiefung 15 beispielsweise weiterhin zumindest ein Element 27 zur Verbesserung der elektromagnetischen Verträglichkeit, beispielsweise in Form von Kondensatoren, auf. Die Kondensatoren 27 sind beispielsweise mittels Leitkleber,The pressure sensor module 1 in the recess 15, for example, also has at least one element 27 for improving the electromagnetic compatibility, for example in the form of capacitors. The capacitors 27 are, for example, by means of conductive adhesive,
Loren oder Schweissen auf den elektrischen Anschlußelementen 21 oder Steckerelementen 25 elektrisch und mechanisch befestigt. Die Kondensatoren 27 sind bspw. direkt auf der Verbindungsstelle 23 angeordnet.Loren or welding on the electrical connection elements 21 or connector elements 25 electrically and mechanically attached. The capacitors 27 are arranged, for example, directly on the connection point 23.
Figur 2 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Drucksensormoduls 1 .FIG. 2 shows a further exemplary embodiment of a pressure sensor module 1 according to the invention.
Das Modulgehäuse 3 weist in diesem Fall neben der Vertiefung 15 eine Mulde 35 auf , durch die die Steckerelemente 25 oder die elektrischen Anschlußelemente 21 verlaufen. Die Kondensatoren 27 sind in der Mulde 35 auf den Steckerelementen 25 elektrisch verbunden und durch eine Gußmasse 17 umschlossen und geschützt. Die Verbindungsstelle 23 kann ebenfalls in der Mulde 35 angeordnet sein.In this case, the module housing 3 has, in addition to the recess 15, a trough 35 through which the plug elements 25 or the electrical connection elements 21 run. The capacitors 27 are electrically connected in the trough 35 on the plug elements 25 and are enclosed and protected by a casting compound 17. The connection point 23 can also be arranged in the trough 35.
Da die Kondensatoren 27 räumlich gesehen im Vergleich zu Figur 1 weiter von der geschweissten ■ erbindungsstelle 23 der Steckerelemente 25 und Anschlusselemente 21 entfernt sind, können sie auch durch Löten oder Kleben mit den elektrischen Anschlusselementen 21 oder den Steckerelementen 25 elektrisch verbunden werden.Since the capacitors 27 are spatially further away from the welded connection point 23 of the plug elements 25 and connection elements 21 compared to FIG. 1, they can also be electrically connected to the electrical connection elements 21 or the plug elements 25 by soldering or gluing.
Das Modulgehäuse 3 weist bspw. weiterhin den Stutzen 33 mit einem Dichtring 29 auf, so daß der Stutzen 33 in ein weiteres Bauteil eingeführt werden kann, das das zu messende Medium 10 enthält. Dabei ist der Stutzen 33 gegenüber dem Bauteil durch den Dichtring 29 abgedichtet, so daß das zu messende Medium 10 in dem Bauteil nur in Verbindung mit dem Drucksensor 6 kommt und dem Bauteil an der Montagestelle des Stutzens 33 nicht entweichen kann.The module housing 3 also has, for example, the socket 33 with a sealing ring 29, so that the socket 33 can be inserted into a further component which contains the medium 10 to be measured. In this case, the connector 33 is sealed off from the component by the sealing ring 29, so that the medium 10 to be measured in the component only comes into contact with the pressure sensor 6 and cannot escape the component at the assembly point of the connector 33.
Das Drucksensormodul 1 kann weiterhin einen Temperatursensor 40, beispielsweise ein NTC-Widerstand, aufweisen.The pressure sensor module 1 can furthermore have a temperature sensor 40, for example an NTC resistor.
Figur 3 zeigt ein weiteres Ausführungsbeispiel des erfindungsgemässen Drucksensormoduls 1 ausgehend von Figur 2. Die geschweisste Verbindungsstelle 23 liegt in der Mulde 35, so dass die Elemente' 27 möglichst nah am Drucksensor 6, also in der Vertiefung 15 angeordnet sind. FIG. 3 shows a further exemplary embodiment of the pressure sensor module 1 according to the invention, starting from FIG. 2. The welded connection point 23 lies in the trough 35, so that the elements 27 are arranged as close as possible to the pressure sensor 6, that is to say in the depression 15.

Claims

Ansprüche Expectations
1. Drucksensormodul zumindest bestehend aus einem Modulgehause, und einem Drucksensor, der in einem Sensorgehäuse, das separat vom Modulgehäuse ausgebildet ist, angeordnet und durch ein Deckmittel geschützt ist,1. Pressure sensor module consisting at least of a module housing and a pressure sensor, which is arranged in a sensor housing which is formed separately from the module housing and is protected by a covering means,
dadurch gekennzeichnet, dasscharacterized in that
das Sensorgehäuse (8) zumindest teilweise an dem Modulgehäuse (3) anliegt.the sensor housing (8) rests at least partially on the module housing (3).
2. Drucksensormodul nach Anspruch 1, dadurch gekennzeichnet, dass2. Pressure sensor module according to claim 1, characterized in that
elektrische Anschlusselemente (21) für den Drucksensor (6) durch das Sensorgehäuse (8) teilweise umschlossen sind.electrical connection elements (21) for the pressure sensor (6) are partially enclosed by the sensor housing (8).
3. Drucksensormodul nach Anspruch 2, dadurch gekennzeichnet, dass3. Pressure sensor module according to claim 2, characterized in that
die elektrischen Anschlusselemente (21) mit äusseren elektrischen Steckerelementen (25) elektrisch verbunden sind.the electrical connection elements (21) with external ones electrical connector elements (25) are electrically connected.
4. Drucksensormodul nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass4. Pressure sensor module according to claim 1 or 2, characterized in that
das Sensorgehäuse (8) aus Kunststoff ist.the sensor housing (8) is made of plastic.
5. Drucksensormodul nach Anspruch 1, dadurch gekennzeichnet, dass5. Pressure sensor module according to claim 1, characterized in that
das Deckmittel (12) ein Gel ist.the covering agent (12) is a gel.
6. Drucksensormodul nach Anspruch 1, dadurch gekennzeichnet, dass6. Pressure sensor module according to claim 1, characterized in that
das Sensorgehäuse (8) in dem Modulgehäuse (3) durch eine Kunststoffumspritzung umschlossen und gehalten ist.the sensor housing (8) is enclosed and held in the module housing (3) by a plastic coating.
7. Drucksensormodul nach Anspruch 1, dadurch gekennzeichnet, dass7. Pressure sensor module according to claim 1, characterized in that
das Ξensorgehäuse (8) in dem Modulgehäuse (3) durch eine Vergussmasse (17) umschlossen und gehalten ist.the sensor housing (8) is enclosed and held in the module housing (3) by a casting compound (17).
8. Drucksensormodul nach einem oder zwei der Ansprüche 1, 6 oder 7, dadurch gekennzeichnet, dass das Sensorgehäuse (8) in einer Vertiefung (15) des Modulgehäuses '(3) angeordnet ist.8. Pressure sensor module according to one or two of claims 1, 6 or 7, characterized in that the sensor housing (8) is arranged in a recess (15) of the module housing (3).
Drucksensormodul nach Anspruch 1, dadurch gekennzeichnet, dassPressure sensor module according to claim 1, characterized in that
das Drucksensormodul (1) zumindest ein Element (27) zur Verbesserung der elektromagnetischen Verträglichkeit hat.the pressure sensor module (1) has at least one element (27) to improve electromagnetic compatibility.
10. Drucksensormodul nach Anspruch 9 , dadurch gekennzeichnet, dass10. Pressure sensor module according to claim 9, characterized in that
das Element (27) durch eine Vergussmasse (27) geschützt ist.the element (27) is protected by a casting compound (27).
11. Drucksensormodul nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass11. Pressure sensor module according to claim 9 or 10, characterized in that
das Element (27) zur Verbesserung der elektromagnetischen Verträglichkeit ein Kondensator ist .the element (27) to improve electromagnetic compatibility is a capacitor.
12. Drucksensormodul nach Anspruch 9., 10 oder 11, dadurch gekennzeichnet, dass12. Pressure sensor module according to claim 9, 10 or 11, characterized in that
das Element (27) zur Verbesserung der elektromagnetischen Verträglichkeit durch Leitkleber, Löten oder Schweißen auf den elektrischen Leitungen (21, 25) elektrisch und mechanisch verbunden ist . the element (27) is electrically and mechanically connected to the electrical lines (21, 25) to improve electromagnetic compatibility by conductive adhesive, soldering or welding.
3. Drucksensormodul nach Anspruch 9, 10, 11 oder 12, dadurch gekennzeichnet ,3. Pressure sensor module according to claim 9, 10, 11 or 12, characterized in
dass der Drucksensor (6) in einer Vertiefung (15) des Modulgehäuses (3) angeordnet ist, und dass das zumindest eine Element (27) zur Verbesserung der elektromagnetischen Verträglichkeit in einer Mulde (35) , die separat von. der Vertiefung (15) ausgebildet ist, angeordnet ist .that the pressure sensor (6) is arranged in a recess (15) of the module housing (3), and that the at least one element (27) for improving the electromagnetic compatibility in a trough (35), which is separate from. the recess (15) is formed, is arranged.
14. Drucksensormodul nach Anspruch 9, 10, 11 oder 12, dadurch gekennzeichnet,14. Pressure sensor module according to claim 9, 10, 11 or 12, characterized in
dass der Drucksensor (6) in einer Vertiefung (15) des Modulgehäuses (3) angeordnet ist, und dass das Element (27) in der Vertiefung (15) angeordnet ist.that the pressure sensor (6) is arranged in a recess (15) of the module housing (3), and that the element (27) is arranged in the recess (15).
15. Drucksensormodul nach Anspruch 1 oder 9, dadurch gekennzeichnet , dass15. Pressure sensor module according to claim 1 or 9, characterized in that
das Drucksensormodul (1) einen Temperatursensor (40) au eist. the pressure sensor module (1) has a temperature sensor (40).
EP01992877A 2000-11-01 2001-10-31 Pressure sensor module Withdrawn EP1334342A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10054013 2000-11-01
DE10054013A DE10054013B4 (en) 2000-11-01 2000-11-01 Pressure sensor module
PCT/DE2001/004123 WO2002037074A1 (en) 2000-11-01 2001-10-31 Pressure sensor module

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EP1334342A1 true EP1334342A1 (en) 2003-08-13

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JP (1) JP2004513339A (en)
KR (1) KR20020065617A (en)
CN (1) CN1332190C (en)
AU (1) AU775608B2 (en)
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DE (1) DE10054013B4 (en)
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AU775608B2 (en) 2004-08-05
KR20020065617A (en) 2002-08-13
US6805010B2 (en) 2004-10-19
CN1332190C (en) 2007-08-15
RU2279650C2 (en) 2006-07-10
RU2002120909A (en) 2004-03-20
DE10054013B4 (en) 2007-06-21
DE10054013A1 (en) 2002-05-23
WO2002037074A1 (en) 2002-05-10
US20030115967A1 (en) 2003-06-26
CN1633587A (en) 2005-06-29
JP2004513339A (en) 2004-04-30
AU2153802A (en) 2002-05-15
BR0107390A (en) 2002-09-10

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