DE10109095A1 - Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mounted - Google Patents
Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mountedInfo
- Publication number
- DE10109095A1 DE10109095A1 DE2001109095 DE10109095A DE10109095A1 DE 10109095 A1 DE10109095 A1 DE 10109095A1 DE 2001109095 DE2001109095 DE 2001109095 DE 10109095 A DE10109095 A DE 10109095A DE 10109095 A1 DE10109095 A1 DE 10109095A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- pressure
- combination
- temperature sensor
- temperature
- 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- Withdrawn
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
- G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
-
- 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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft einen Kombinationssensor gemäß dem Oberbegriff des An spruchs 1.The invention relates to a combination sensor according to the preamble of the saying 1.
Prinzipiell ist ein aus Drucksensor und Temperatursensor bestehender Kombinati onssensor bekannt. Beispielsweise bietet die Firma Kulite unter der Sensorbaureihe APT einen solchen Sensor an, der beispielsweise in der Luftfahrt eingesetzt wird. Bei diesem Kombinationssensor sind der Drucksensor und der Temperatursensor vollständig elektrisch getrennt, d. h. beide Sensoren werden getrennt voneinander mit Spannung versorgt.In principle, there is a combination of a pressure sensor and a temperature sensor on sensor known. For example, the company Kulite offers under the sensor series APT to such a sensor, which is used for example in aviation. With this combination sensor are the pressure sensor and the temperature sensor completely electrically isolated, d. H. both sensors are separated from each other powered.
Der bekannte Sensor aus der APT-Baureihe der Firma Kulite besitzt den Nachteil, daß er groß und schwer und damit beispielsweise im Rennsport nicht einsetzbar ist. Darüber hinaus erfolgt die Befestigung mittels eines Flansches oder mit einer Schelle, so daß man zusätzliche Hilfsmittel bei der Montage benötigt. Im übrigen handelt es sich bei dem APT-Sensor nicht um einen Frontmembran-Sensor, so daß damit nicht der statische Druck bestimmt werden kann. Schließlich findet durch den relativ großen Aufbau auch eine Wärmeableitung über das Drucksensorgehäuse statt. Dadurch wird die Temperaturmessung verfälscht.The known sensor from the Kulite APT series has the disadvantage that that it is large and heavy and therefore cannot be used in racing, for example. In addition, the attachment is carried out by means of a flange or with a Clamp so that additional aids are required for assembly. Furthermore the APT sensor is not a front membrane sensor, so that so that the static pressure cannot be determined. Finally takes place through the relatively large structure also a heat dissipation via the pressure sensor housing instead of. This falsifies the temperature measurement.
Aufgabe der vorliegenden Erfindung ist es, einen Kombinationssensor der eingangs genannten Art derart weiterzubilden, daß er die vorgenannten Nachteile vermeidet.The object of the present invention is to provide a combination sensor of the beginning to further develop the type mentioned in such a way that it avoids the aforementioned disadvantages.
Diese Aufgabe wird durch die im Anspruch 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in claim 1.
Demgemäß ist ein Kombinationssensor umfassend einen Drucksensor und einen Temperatursensor angegeben, bei dem der Drucksensor als Frontmembran-Sensor ausgebildet und der Temperatursensor als Meßfinger auf einem Schutzschirm des Drucksensors angeordnet ist.Accordingly, a combination sensor is comprised of a pressure sensor and a Temperature sensor specified, where the pressure sensor as a front membrane sensor trained and the temperature sensor as a measuring finger on a protective screen of the Pressure sensor is arranged.
Durch die Ausbildung des Temperatursensors als Meßfinger auf dem Schutzschirm des Frontmembran-Sensors findet im wesentlichen eine thermische Entkopplung der beiden Sensoren statt, d. h., durch den kleinen geometrischen Übergang des Temperaturfingers zum Drucksensorgehäuse ist im wesentlichen eine Temperatur falle ausgebildet, so daß fast keine Wärmeableitung von dem Temperaturmeßfinger auf das Drucksensorgehäuse stattfindet. Gemäß einer vorteilhaften Ausführungs form der Erfindung erstreckt sich der Meßfinger in Axialrichtung vor dem Schutz schirm, so daß die Temperaturmessung an einer anderen Stelle als die Druckmes sung erfolgt. Im übrigen befindet sich der Temperatursensor vollkommen in der Flüssigkeitsströmung, so daß wirklich die Strömungstemperatur der Flüssigkeit be stimmt werden kann. Mit anderen Worten ist der abgesetzte Temperatursensor aus dem Drucksensorgehäuse entfernt, so daß direkt die Medientemperaturmessung und nicht die Membrantemperatur gemessen wird.By designing the temperature sensor as a measuring finger on the protective screen the front membrane sensor is essentially thermally decoupled of the two sensors instead, d. that is, by the small geometric transition of the Temperature finger to the pressure sensor housing is essentially a temperature trap formed so that almost no heat dissipation from the temperature sensor on the pressure sensor housing. According to an advantageous embodiment form of the invention, the measuring finger extends in the axial direction from protection screen, so that the temperature measurement at a different location than the pressure measurement solution. Otherwise, the temperature sensor is completely in the Liquid flow so that really the flow temperature of the liquid be can be voted. In other words, the remote temperature sensor is off removed the pressure sensor housing, so that directly the media temperature measurement and not the membrane temperature is measured.
Im übrigen dient die gesamte Querschnittsfläche des Sensormoduls der Druckauf nahme.Otherwise, the entire cross-sectional area of the sensor module is used to print undertaking.
Die Ausführung von Drucksensoren als Frontmembran-Sensor ist prinzipiell be kannt. Mit einem entsprechend ausgebildeten Einschraubgewinde des Drucksen sorgehäuses ergibt sich der Vorteil, daß der Drucksensor selbst nicht der Strömung ausgesetzt und der statische Druck der Flüssigkeit gemessen wird. Der Drucksen sor hat durch die Frontmembran einen größeren Frequenzgang, so daß das Druck signal mit einer höheren Auflösung abgetastet werden kann. The design of pressure sensors as a front membrane sensor is principally be known. With an appropriately designed screw thread of the pressure sleeve care housing, there is the advantage that the pressure sensor itself is not the flow exposed and the static pressure of the liquid is measured. The Drucksen sor has a larger frequency response through the front membrane, so that the pressure signal can be sampled with a higher resolution.
Durch die Kombinationsausbildung der beiden Sensoren wird das Sensormodul leichter.The combination of the two sensors makes the sensor module lighter.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist ein Erdungsanschluß des Drucksensors direkt mit einer Leitung des Temperatursensors verbunden. Da mit vermindert sich der Kabelbaumaufwand und reduziert sich das Gewicht.According to an advantageous embodiment of the invention is an earth connection of the pressure sensor directly connected to a line of the temperature sensor. because reduces the wiring harness and reduces the weight.
Die vorliegende Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und mit Bezug auf die beiliegenden Zeichnungen näher erläutert. Die Zeichnungen zeigen inThe present invention is described below using an exemplary embodiment and explained in more detail with reference to the accompanying drawings. The painting show in
Fig. 1 eine Seitenansicht eines erfindungsgemäßen Kombinationssensors, Fig. 1 is a side view of a combination sensor of the invention,
Fig. 2 eine Frontansicht eines Kombinationssensors gemäß Fig. 1 und Fig. 2 is a front view of a combination sensor according to FIGS. 1 and
Fig. 3 ein Schaltbild des Kombinationssensors aus Fig. 1. Fig. 3 is a diagram of the combination of the sensor in FIG. 1.
Der in dem vorliegenden Ausführungsbeispiel vorgestellte Kombinationssensor be steht im wesentlichen aus einem ähnlichen Drucksensor wie er von der Firma Kulite unter der Baureihe HKM-375M zur Verfügung gestellt wird.The combination sensor presented in the present exemplary embodiment be essentially consists of a pressure sensor similar to that from Kulite under the HKM-375M series.
Ein solcher Drucksensor 10 ist vorliegend mit einem Miniatur-Temperatursensor 16 kombiniert. Der Drucksensor 10 ist - wie der Kulite-Drucksensor HKM-375M - eine Frontmembran-Konstruktion mit einem Gehäuse 12 aus Edelstahl mit einem vorge setzten Schutzschirm 14. Das Gehäuse 12 besitzt einen Durchmesser von 8,1 mm und wird über ein M10 Einschraubgewinde an einer (nicht dargestellten) Meßstelle montiert.In the present case, such a pressure sensor 10 is combined with a miniature temperature sensor 16 . The pressure sensor 10 is - like the Kulite pressure sensor HKM-375M - a front membrane construction with a housing 12 made of stainless steel with a protective shield 14 . The housing 12 has a diameter of 8.1 mm and is mounted on an M10 screw thread at a measuring point (not shown).
Der Temperatursensor 16 ist ein temperaturabhängiger Widerstand (z. B. PT1000- Element mit einem Durchmesser von 1,2 mm und einer Länge von 10 mm. Der Temperatursensor 16 ist als Meßfinger 18 ausgebildet und in einer Edelstahl-Hülse (z. B. VA-Hülse) mit einem Durchmesser von 1,6 mm eingehüllt. Die VA-Hülse dient zum Schutz des Temperatursensor 16. Dieser ist in der VA-Hülse mittels einer Wärmeleitpaste fixiert. The temperature sensor 16 is a temperature-dependent resistor (eg PT1000 element with a diameter of 1.2 mm and a length of 10 mm. The temperature sensor 16 is designed as a measuring finger 18 and in a stainless steel sleeve (eg VA Sleeve) with a diameter of 1.6 mm. The VA sleeve serves to protect the temperature sensor 16. This is fixed in the VA sleeve by means of a thermal paste.
Der Temperatursensor 16 ist auf den Schutzschirm 14 des Drucksensors 10 aufge setzt und zwar in Axialrichtung ausgerichtet, so daß sich insgesamt eine axiale An ordnung der beiden Meßelemente ergibt und der Temperatursensor komplett vor dem Drucksensor 10 sitzt. Dabei wird ein Temperaturmeßanschluß (in den Fig. 1 und 2 nicht dargestellt) durch den Schutzschirm 14 des Drucksensors 10 hindurch geführt.The temperature sensor 16 is placed on the protective shield 14 of the pressure sensor 10 and aligned in the axial direction, so that overall there is an axial arrangement of the two measuring elements and the temperature sensor sits completely in front of the pressure sensor 10 . A temperature measurement connection (not shown in FIGS. 1 and 2) is guided through the protective shield 14 of the pressure sensor 10 .
An dem dem Temperatursensor 16 entgegengesetzten Ende des Drucksensorge häuses 12 tritt ein Kabel mit einem bestimmten Leitungsquerschnitt AWG 24 aus, mit dem die den Meßwerten entsprechenden Signale an eine Auswerteeinheit ü bermittelt werden können.At the end of the pressure sensor housing 12 opposite the temperature sensor 16 , a cable emerges with a certain line cross section AWG 24 , with which the signals corresponding to the measured values can be transmitted to an evaluation unit.
In Fig. 3 ist ein Schaltbild des vorliegenden Kombinationssensors vorgestellt. Der Drucksensor 10 umfaßt dabei vier zu einer Wheatstone-Brücke verschaltete Wider stände R1, R2, R3 und R4, wobei die Widerstände R3 und R4 an einem Ende über einen Erdungsanschluß 20 geerdet sind (GND). Die entgegengesetzten Anschlüsse der Widerstände R1 und R2 sind über einen Widerstand Rspan an eine Spannung von 10 Volt angelegt. Zwischen den beiden miteinander verbundenen Widerständen R1 und R3 bzw. R2 und R4 der Wheatstone-Brücke sind die beiden Abgriffe VOUT_N und VOUT_P abgeleitet. Zwischen den Widerständen R1 und R2 einer seits und Rspan andererseits ist ein optionaler Abgriff VOUT_T abgeleitet.A circuit diagram of the present combination sensor is presented in FIG. 3. The pressure sensor 10 comprises four resistors R1, R2, R3 and R4 connected to a Wheatstone bridge, the resistors R3 and R4 being grounded at one end via a ground connection 20 (GND). The opposite connections of the resistors R1 and R2 are connected to a voltage of 10 volts via a resistor Rspan. The two taps VOUT_N and VOUT_P are derived between the two interconnected resistors R1 and R3 or R2 and R4 of the Wheatstone bridge. An optional tap VOUT_T is derived between the resistors R1 and R2 on the one hand and Rspan on the other.
Der zusätzlich vorgesehene Temperatursensor 16 ist mit dem Erdungsanschluß 20 über die Leitung 22 verbunden. Der andere Anschluß wird als Signal herausgeführt und an +5 V angeschlossen.The additionally provided temperature sensor 16 is connected to the ground connection 20 via the line 22 . The other connection is brought out as a signal and connected to +5 V.
Durch den speziellen konstruktiven Aufbau des Kombinationssensors findet insge samt eine thermische Entkopplung der beiden Sensoren (Temperatursensor 16 und Drucksensor 10) statt, so daß im wesentlichen keinerlei Wärmeableitung vom Tem peratursensor 16 über den Schutzschirm 14 an das Drucksensorgehäuse 12 statt findet. Auch wird nicht die Membrantemperatur oder die Schutzschirmtemperatur gemessen. Vielmehr wird direkt die Medientemperatur bestimmt. Due to the special design of the combination sensor, there is a total thermal decoupling of the two sensors (temperature sensor 16 and pressure sensor 10 ), so that essentially no heat dissipation from the temperature sensor 16 via the protective shield 14 to the pressure sensor housing 12 takes place. Nor is the membrane temperature or the protective shield temperature measured. Rather, the media temperature is determined directly.
Zudem verringert sich durch die gemeinsame Verwendung des Erdungsanschlus ses 20 der Kabelaufwand.In addition, the cable effort is reduced by the common use of the grounding connection 20 .
Insgesamt ist mit dem vorliegenden Sensor daher eine einfache und kostengünsti ge Möglichkeit für einen Kombinationssensor geschaffen, bei dem die Temperatur einer Flüssigkeit unverfälscht bestimmt und der Druck korrekt gemessen werden kann.Overall, the present sensor is therefore simple and inexpensive created possibility for a combination sensor, in which the temperature of a liquid is determined unadulterated and the pressure measured correctly can.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE2001109095 DE10109095A1 (en) | 2001-02-24 | 2001-02-24 | Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mounted |
DE20121848U DE20121848U1 (en) | 2001-02-24 | 2001-02-24 | Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mounted |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE2001109095 DE10109095A1 (en) | 2001-02-24 | 2001-02-24 | Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mounted |
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DE10109095A1 true DE10109095A1 (en) | 2002-09-05 |
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DE2001109095 Withdrawn DE10109095A1 (en) | 2001-02-24 | 2001-02-24 | Combination sensor, especially pressure and temperature sensor, for use in motor sport or aerospace applications has a compact design and is easily mounted |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008031691A1 (en) | 2006-09-15 | 2008-03-20 | Robert Bosch Gmbh | Sensor plug for combined pressure- and temperature measurement |
US7434470B2 (en) | 2005-12-19 | 2008-10-14 | Robert Bosch Gmbh | Combined pressure and temperature sensor |
DE102007042789A1 (en) | 2007-09-07 | 2009-03-12 | Robert Bosch Gmbh | Plug-in sensor for measuring at least one property of a fluid medium |
DE102008002499A1 (en) | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Measuring sensor for combined pressure and temperature measurement of e.g. gas, in common-rail-system in automobile, has optical pressure sensor producing optical pressure signal corresponding to pressure of fluid medium |
DE102009009869B3 (en) * | 2009-02-20 | 2010-07-08 | Temperaturmeßtechnik Geraberg GmbH | Combined temperature and pressure sensor for fluid systems, has base body that is fastened tightly in wall of litigant vessel, where base body has temperature sensor and pressure measuring channel |
US7954994B2 (en) | 2005-11-29 | 2011-06-07 | Robert Bosch Gmbh | Combined pressure/temperature sensor having centric temperature measurement |
DE102010012823A1 (en) * | 2009-12-11 | 2011-06-16 | Armaturenbau Gmbh | Diaphragm seal with temperature sensor |
DE102009055057A1 (en) | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | sensor |
CN103852104A (en) * | 2012-12-03 | 2014-06-11 | 上海文襄汽车传感器有限公司 | Temperature and pressure combination sensor based on anodic bonding |
DE102013211479A1 (en) | 2013-06-19 | 2014-12-24 | Robert Bosch Gmbh | Device for detecting a pressure and a temperature of a medium |
DE10345835B4 (en) * | 2003-10-02 | 2015-04-09 | Bayerische Motoren Werke Aktiengesellschaft | Sensor arrangement for monitoring at least two physical quantities |
DE102008042721B4 (en) * | 2007-10-12 | 2015-09-10 | Ifm Electronic Gmbh | sensor housing |
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Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10345835B4 (en) * | 2003-10-02 | 2015-04-09 | Bayerische Motoren Werke Aktiengesellschaft | Sensor arrangement for monitoring at least two physical quantities |
US7954994B2 (en) | 2005-11-29 | 2011-06-07 | Robert Bosch Gmbh | Combined pressure/temperature sensor having centric temperature measurement |
US7434470B2 (en) | 2005-12-19 | 2008-10-14 | Robert Bosch Gmbh | Combined pressure and temperature sensor |
WO2008031691A1 (en) | 2006-09-15 | 2008-03-20 | Robert Bosch Gmbh | Sensor plug for combined pressure- and temperature measurement |
US8038345B2 (en) | 2006-09-15 | 2011-10-18 | Robert Bosch Gmbh | Sensor plug for combined pressure and temperature measurement |
US8454232B2 (en) | 2007-09-07 | 2013-06-04 | Robert Bosch Gmbh | Plug-in sensor for measuring at least one property of a fluid medium |
DE102007042789A1 (en) | 2007-09-07 | 2009-03-12 | Robert Bosch Gmbh | Plug-in sensor for measuring at least one property of a fluid medium |
US9518848B2 (en) | 2007-10-12 | 2016-12-13 | Ifm Electronic Gmbh | Sensor housing |
DE102008042721B4 (en) * | 2007-10-12 | 2015-09-10 | Ifm Electronic Gmbh | sensor housing |
DE102008002499A1 (en) | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Measuring sensor for combined pressure and temperature measurement of e.g. gas, in common-rail-system in automobile, has optical pressure sensor producing optical pressure signal corresponding to pressure of fluid medium |
DE102009009869B3 (en) * | 2009-02-20 | 2010-07-08 | Temperaturmeßtechnik Geraberg GmbH | Combined temperature and pressure sensor for fluid systems, has base body that is fastened tightly in wall of litigant vessel, where base body has temperature sensor and pressure measuring channel |
DE102010012823B4 (en) * | 2009-12-11 | 2013-06-13 | Armaturenbau Gmbh | Diaphragm seal with temperature sensor |
DE102010012823A1 (en) * | 2009-12-11 | 2011-06-16 | Armaturenbau Gmbh | Diaphragm seal with temperature sensor |
DE102010012823C5 (en) * | 2009-12-11 | 2017-03-02 | Armaturenbau Gmbh | Diaphragm seal with temperature sensor |
WO2011076482A1 (en) | 2009-12-21 | 2011-06-30 | Robert Bosch Gmbh | Pressure and temperature sensor |
DE102009055057A1 (en) | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | sensor |
CN103852104A (en) * | 2012-12-03 | 2014-06-11 | 上海文襄汽车传感器有限公司 | Temperature and pressure combination sensor based on anodic bonding |
CN103852104B (en) * | 2012-12-03 | 2017-08-25 | 上海文襄汽车传感器有限公司 | Temperature and pressure compound sensor based on anode linkage |
DE102013211479A1 (en) | 2013-06-19 | 2014-12-24 | Robert Bosch Gmbh | Device for detecting a pressure and a temperature of a medium |
DE102013211479B4 (en) | 2013-06-19 | 2024-07-04 | Robert Bosch Gmbh | Device for detecting a pressure and a temperature of a medium |
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