DE102010042447A1 - Device i.e. plug-in detector, for detecting mass flow and/or volumetric flow and temperature of fluid medium in suction tube of internal combustion engine, has protective switch arranged and in electrical contact into casting tub - Google Patents
Device i.e. plug-in detector, for detecting mass flow and/or volumetric flow and temperature of fluid medium in suction tube of internal combustion engine, has protective switch arranged and in electrical contact into casting tub Download PDFInfo
- Publication number
- DE102010042447A1 DE102010042447A1 DE201010042447 DE102010042447A DE102010042447A1 DE 102010042447 A1 DE102010042447 A1 DE 102010042447A1 DE 201010042447 DE201010042447 DE 201010042447 DE 102010042447 A DE102010042447 A DE 102010042447A DE 102010042447 A1 DE102010042447 A1 DE 102010042447A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature sensor
- housing
- protection circuit
- emc protection
- plug
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
-
- 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
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
-
- 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
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/6845—Micromachined devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
- G01K2205/02—Application of thermometers in motors, e.g. of a vehicle for measuring inlet gas temperature
Abstract
Description
Stand der TechnikState of the art
Während zwar das Elektronikmodul durch eine EMV-Schutzschaltung geschützt ist, bestehen hinsichtlich des Temperatursensors derzeit keine zusätzlichen Schutzmaßnahmen hinsichtlich der elektromagnetischen Verträglichkeit. Bei zukünftigen Kundenlastenheften ist jedoch mit verschärften EMV-Anforderungen insbesondere an einen Temperatursensor wie zum Beispiel einen NTC zu rechnen.While the electronic module is protected by an EMC protection circuit, there are currently no additional protective measures with regard to the electromagnetic compatibility with regard to the temperature sensor. For future customer service booklets, however, stricter EMC requirements, in particular a temperature sensor such as an NTC, are to be expected.
Offenbarung der ErfindungDisclosure of the invention
Erfindungsgemäß wird vorgeschlagen, einen EMV-Schutz eines Temperatursensors, insbesondere eines NTC-Elementes durch einen zusätzlich parallel zum Temperatursensor, insbesondere einem NTC geschalteten, Kondensator zu realisieren. Die EMV-Schutzschaltung in Gestalt eines Kondensators die Verbindungsstelle zu Leiterbahnen müssen gegenüber den Medien im Ansaugtrakt geschützt werden. In besonders vorteilhafter Weise ist ein elektrischer Anschluss, dargestellt durch Kontaktierpads, für den Temperaturfühler im Gehäuse in unmittelbarer Nähe einer Vergusswanne vorgesehen, in der eine EMV-Schutzschaltung, die insbesondere als ein Kondensator beschaffen ist, angeordnet und elektrisch kontaktiert ist. Je näher die EMV-Schutzschaltung in der Nähe des Temperaturfühlers, der insbesondere als NTC-Temperaturfühler ausgebildet ist, angeordnet ist, desto größer ist die Wirkung der parallel geschalteten EMV-Schutzschaltung in Bezug auf den Temperaturfühler.According to the invention, it is proposed to realize EMC protection of a temperature sensor, in particular of an NTC element, by means of a capacitor additionally connected in parallel with the temperature sensor, in particular an NTC. The EMC protection circuit in the form of a capacitor, the connection point to tracks must be protected against the media in the intake system. In a particularly advantageous manner, an electrical connection, represented by Kontaktierpads, provided for the temperature sensor in the housing in the immediate vicinity of a Vergusswanne, in which an EMC protection circuit, which is designed in particular as a capacitor arranged and electrically contacted. The closer the EMC protection circuit in the vicinity of the temperature sensor, which is designed in particular as NTC temperature sensor, is arranged, the greater the effect of the parallel-connected EMC protection circuit with respect to the temperature sensor.
Sowohl die EMV-Schutzschaltung als auch dessen elektrische Kontaktierung sind in vorteilhafter Weise gegenüber den Medien immer dem die Vorrichtung zur Erfassung des Luftmassenstromes und der Temperatur im Ansaugtrakt einer Verbrennungskraftmaschine zugeordnet ist, beispielsweise durch Einbringen einer Vergussmasse geschützt.Both the EMC protection circuit and its electrical contacting are always advantageously associated with the device for detecting the air mass flow and the temperature in the intake tract of an internal combustion engine compared to the media, for example, protected by introducing a potting compound.
Die Schnittstelle zur Anbindung des Temperatursensors befindet sich beispielsweise auf der Rückseite einer als Steckfühler ausgebildeten Vorrichtung zur Erfassung des Luftmassenstroms und der Temperatur im Saugrohr einer Verbrennungskraftmaschine. Die Schnittstelle umfasst beispielsweise Kontaktierpads, welche eine Verbindung zu Leiterbahnen darstellen, des Weiteren eine wannenförmige Vertiefung mit Aufnahmenoten und einer Fixierstelle, die bei einem spritzgegossenen Gehäuse insbesondere als Fixierrippe oder dergleichen ausgebildet werden kann. Die ebenfalls in das Gehäuse eingegossenen Aufnahmenoten und die zum Beispiel als Fixierrippe ausgebildete Fixierstelle dienen der Positionierung des insbesondere als NTC beschaffenen Temperaturfühlers. Abisolierte Bereiche von dessen Kontaktdrähte ragen in die wannenförmige Vertiefung im Gehäuse hinein. Die elektrische Kontaktierung zwischen dem als NTC beschaffenen Temperaturfühler und den Leiterbahnen erfolgt beispielsweise durch ein stoffschlüssiges Fügeverfahren, zum Beispiel durch Stufenschweißen.The interface for connecting the temperature sensor is located for example on the back of a device designed as a plug-in device for detecting the air mass flow and the temperature in the intake manifold of an internal combustion engine. The interface includes, for example Kontaktierpads, which represent a connection to conductor tracks, further comprising a trough-shaped recess with recording notes and a fixing point, which can be formed in an injection-molded housing in particular as Fixierrippe or the like. The recording shot also cast into the housing and the fixing point formed, for example, as a fixing rib serve to position the temperature sensor, in particular as NTC. Stripped areas of its contact wires protrude into the trough-shaped depression in the housing. The electrical contact between the procured NTC temperature sensor and the tracks is done for example by a cohesive joining process, for example by step welding.
Zum Schutz der elektrischen Kontaktierung darstellenden Schweißverbindung und der abisolierten Anschlussdrähte des Temperaturfühlers, die in die wannenförmige Vertiefung im Gehäuse des Sensors hineinragen, vor Korrosion und Medienbelastung, wird die wannenförmige Vertiefung nach dem Herstellen der elektrischen Kontaktierung mit einer Vergussmasse gefüllt. Die wannenförmige Vertiefung ist dabei in vorteilhafter Weise von Begrenzungswänden, die im Inneren des Gehäuses verlaufen, begrenzt, sodass die Vergussmasse ausschließlich innerhalb eines definierten Bereiches verläuft, dort aushärtet und einen wirksamen Schutz der elektrischen Kontaktierung des Temperaturfühlers gegen Korrosion und gegen Medienbelastung ausbildet.In order to protect the electrical connection representing welding connection and the stripped connection wires of the temperature sensor, which protrude into the trough-shaped depression in the housing of the sensor from corrosion and media load, the trough-shaped depression is filled after making the electrical contact with a potting compound. The trough-shaped depression is in an advantageous manner by boundary walls extending inside the housing limited so that the potting compound extends exclusively within a defined range, where it hardens and forms an effective protection of the electrical contact of the temperature sensor against corrosion and against media load.
Der erfindungsgemäß vorgeschlagenen Lösung folgend befindet sich in unmittelbarer Nähe der elektrischen Anschlussstelle des Temperaturfühlers, insbesondere eines NTC im Gehäuse der Vorrichtung zur Erfassung der Luftmasse und der Temperatur eine Vergusswanne, innerhalb derer die EMV-Schutzschaltung, insbesondere in Gestalt eines Kondensators eingelassen und elektrisch kontaktiert ist. Je näher die EMV-Schutzschaltung im Bezug auf den Temperaturfühler, insbesondere einen NTC, platziert werden kann, desto besser ist der erreichbare EMV-Schutz. Der erfindungsgemäß vorgeschlagenen Lösung folgend, befindet sich an der Rückseite des Gehäuses der als Steckfühler ausgebildeten Vorrichtung zur Erfassung der Luftmasse und der Temperatur eine weitere zusätzliche Vergusswanne in der Nähe der elektrischen Anschlussstelle des Temperaturfühlers. In der Vergusswanne sind Kontaktierungspads für die EMV-Schutzschaltung integriert. Kontaktierungspads innerhalb dieser Vergusswanne sind mit den elektrischen Anschlüssen des in der benachbart angeordneten wannenförmigen Vertiefung elektrisch kontaktierten Temperaturfühlers verbunden. Die elektrische Kontaktierung zwischen den Kontaktierpads innerhalb der Vergusswanne und der EMV-Schutzschaltung, insbesondere eines Kondensators erfolgt durch eine stoffschlüssige Verbindung so zum Beispiel über eine Schweißverbindung oder durch Einsatz eines Leitklebers.Following the proposed solution according to the invention is in the immediate vicinity Near the electrical connection point of the temperature sensor, in particular an NTC in the housing of the device for detecting the air mass and the temperature of a potting, within which the EMC protection circuit, in particular in the form of a capacitor is inserted and electrically contacted. The closer the EMC protection circuit can be placed in relation to the temperature sensor, in particular an NTC, the better the EMC protection that can be achieved. Following the solution proposed by the invention, located at the back of the housing of the device designed as a plug-in device for detecting the air mass and the temperature of a further additional Vergusswanne in the vicinity of the electrical connection point of the temperature sensor. Contact patches for the EMC protection circuit are integrated in the potting tub. Contact pads within this Vergusswanne are connected to the electrical terminals of the electrically arranged in the adjacent trough-shaped depression temperature sensor. The electrical contacting between the Kontaktierpads within the Vergusswanne and the EMC protection circuit, in particular a capacitor is effected by a material connection such as for example via a welded joint or by using a conductive adhesive.
Auch die EMV-Schutzschaltung ist zum Schutz der elektrischen Verbindung und zum Schutz gegen von außen Einwirken des Mediums wie zum Schutz gegen Korrosion mit einer Vergussmasse befüllt, bei der es sich um die gleiche oder eine andere Vergussmasse handeln kann, mit der die wannenförmige Vertiefung zum Schutz der elektrischen Kontaktierung des Temperaturfühlers im bevorzugt als Spritzgussbauteil gefertigten Gehäuse des Steckfühlers vergossen ist.The EMC protection circuit is filled to protect the electrical connection and protection against external influences of the medium as to protect against corrosion with a potting compound, which may be the same or another potting compound, with the trough-shaped depression Protection of the electrical contact of the temperature sensor is cast in preferably manufactured as an injection molded component housing of the plug-in sensor.
Kurze Beschreibung der ZeichnungShort description of the drawing
Anhand der Zeichnung wird die Erfindung nachstehend eingehender beschrieben.With reference to the drawing, the invention will be described below in more detail.
Es zeigt:It shows:
Der Darstellung gemäß
Ein Steckfühler
Im Gehäuse
Ausführungsformen der ErfindungEmbodiments of the invention
Wie
In unmittelbarer Nähe der wannenförmigen Vertiefung
Der Kontakt zwischen den Kontaktierpads
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102008/002682 A1 [0001] DE 102008/002682 A1 [0001]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010042447 DE102010042447A1 (en) | 2010-10-14 | 2010-10-14 | Device i.e. plug-in detector, for detecting mass flow and/or volumetric flow and temperature of fluid medium in suction tube of internal combustion engine, has protective switch arranged and in electrical contact into casting tub |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010042447 DE102010042447A1 (en) | 2010-10-14 | 2010-10-14 | Device i.e. plug-in detector, for detecting mass flow and/or volumetric flow and temperature of fluid medium in suction tube of internal combustion engine, has protective switch arranged and in electrical contact into casting tub |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010042447A1 true DE102010042447A1 (en) | 2012-04-19 |
Family
ID=45895620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201010042447 Withdrawn DE102010042447A1 (en) | 2010-10-14 | 2010-10-14 | Device i.e. plug-in detector, for detecting mass flow and/or volumetric flow and temperature of fluid medium in suction tube of internal combustion engine, has protective switch arranged and in electrical contact into casting tub |
Country Status (1)
Country | Link |
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DE (1) | DE102010042447A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013211475A1 (en) | 2013-06-19 | 2014-12-24 | Robert Bosch Gmbh | Sensor arrangement for determining at least one parameter of a fluid flowing through a channel |
CN111133281A (en) * | 2017-09-20 | 2020-05-08 | 罗伯特·博世有限公司 | Method and device for controlling a heating element for heating a sensor element of an air quality sensor of a vehicle, and air quality sensor system for a vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008002682A1 (en) | 2008-06-26 | 2009-12-31 | Robert Bosch Gmbh | Device for detecting the pressure and the temperature in a suction pipe of an internal combustion engine |
-
2010
- 2010-10-14 DE DE201010042447 patent/DE102010042447A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008002682A1 (en) | 2008-06-26 | 2009-12-31 | Robert Bosch Gmbh | Device for detecting the pressure and the temperature in a suction pipe of an internal combustion engine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013211475A1 (en) | 2013-06-19 | 2014-12-24 | Robert Bosch Gmbh | Sensor arrangement for determining at least one parameter of a fluid flowing through a channel |
CN111133281A (en) * | 2017-09-20 | 2020-05-08 | 罗伯特·博世有限公司 | Method and device for controlling a heating element for heating a sensor element of an air quality sensor of a vehicle, and air quality sensor system for a vehicle |
CN111133281B (en) * | 2017-09-20 | 2022-07-22 | 罗伯特·博世有限公司 | Method and device for controlling a heating element for heating a sensor element of an air quality sensor of a vehicle, and air quality sensor system for a vehicle |
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