EP1718483A2 - Capteur thermique et dispositif pour climatiser l'habitacle d'un vehicule - Google Patents

Capteur thermique et dispositif pour climatiser l'habitacle d'un vehicule

Info

Publication number
EP1718483A2
EP1718483A2 EP05701443A EP05701443A EP1718483A2 EP 1718483 A2 EP1718483 A2 EP 1718483A2 EP 05701443 A EP05701443 A EP 05701443A EP 05701443 A EP05701443 A EP 05701443A EP 1718483 A2 EP1718483 A2 EP 1718483A2
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
temperature
sensor
arrangement
interior
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Withdrawn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
EP05701443A
Other languages
German (de)
English (en)
Inventor
Hans-Dieter Heimberger
Bruno Santarossa
Henry Strobel
Josef Werner
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.)
Continental Automotive GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1718483A2 publication Critical patent/EP1718483A2/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2201/00—Application of thermometers in air-conditioning systems
    • G01K2201/02—Application of thermometers in air-conditioning systems in vehicles

Definitions

  • the invention relates to a temperature sensor with a temperature-sensitive sensor element and connecting elements for establishing an electrical connection to the sensor element and an arrangement for climate control of a motor vehicle interior with such a temperature sensor.
  • Various sensors for determining actual conditions are used in control and regulating devices for motor vehicle air conditioning systems. Examples are sensors for determining the interior temperature, the outside temperature and the outlet temperature of the air supplied to the interior, and a sun sensor.
  • the temperature sensor for the interior temperature is usually hidden in the control and regulating device. So that the interior temperature can nevertheless be measured correctly, a suction fan is used in such an arrangement, which sucks in air from the interior of the motor vehicle and guides it past the temperature sensor.
  • This arrangement has proven itself in principle in the past, however, for a safe function the running of the suction fan must be constantly monitored in order to be able to recognize its failure in time. Furthermore, the noise caused by the suction fan is perceived as annoying.
  • DE 100 56 694 C2 discloses the arrangement of a non-ventilated temperature sensor in a motor vehicle, the sensor sorsystem includes a thermopile element and a temperature reference element assigned to the thermopile element.
  • the thermopile element detects the thermal radiation emitted by one or more objects within a passenger compartment of the motor vehicle.
  • the measurement signals generated by the thermopile element and the temperature reference element are fed to a control device of an air conditioner of the motor vehicle.
  • the measurement signal of the temperature reference element is used as a reference signal for determining a temperature signal from the measurement value of the thermopile element.
  • the temperature reference element is thermally coupled to a heat-conducting element, which in turn is in close thermal contact with the passenger compartment of the motor vehicle, so that the measurement signal of the temperature reference element is largely proportional to an interior temperature of the passenger compartment.
  • the device disclosed for dp, rt for determining the temperature in the interior of a vehicle is provided with a temperature sensor for arrangement behind a wall adjacent to the interior and a processing unit.
  • the processing unit receives the measurement signal from the temperature sensor and outputs an output signal representing the temperature in the interior of the vehicle.
  • the device has a heat conduction element for detecting the temperature of the air of the interior within its region close to the wall, the heat conduction element being in heat conduction contact with the temperature sensor and being provided for extension through an opening in the wall.
  • the unventilated temperature sensors for measuring the interior temperature in motor vehicles should also not be visible in the passenger compartment and are therefore hidden.
  • the problem of falsification of measured values arises, for example, from the fact that heat generated in the control device acts on the temperature sensor or, more generally speaking, the temperature in the control and regulating device in which the temperature sensor is arranged deviates from the interior temperature.
  • the first-mentioned object is achieved by a temperature sensor with the features of claim 1. Due to the design of the connection elements of the temperature-sensitive sensor element as conductor tracks applied to a flexible film, the connection elements have an extremely small cross-section in comparison to connection wires. On- Due to the extremely small cross-section, the conductor tracks have a high thermal resistance, so that the transfer of heat from a control and regulating device to the sensor element is kept very small.
  • a flexible film also has the advantage of being easy to install. Tolerances between the installation location of the temperature-sensitive sensor element and a rigid printed circuit board, on which the processing of the measurement signal of the temperature sensor and the generation of control or regulating signals of the climate control takes place, can be easily compensated.
  • the sensor element is applied as an unwired sensor element on the same flexible film as the connection elements and directly with
  • the sensor element contains both a temperature-dependent resistor and an infrared sensor.
  • the temperature-dependent resistance can be
  • the infrared sensor can in particular be designed as a semiconductor sensor chip.
  • the sensor element can be provided with a covering for protection.
  • the envelope be opaque in the visible spectral range and transparent in an infrared spectral range.
  • the infrared sensor can be used as a sun sensor for determining the solar radiation in the motor vehicle interior.
  • the conductor tracks are widened in an end region remote from the sensor element as contact points, in particular for a plug connection.
  • the cross section of the conductor tracks is thus increased in the end region in order to facilitate a connection to a rigid printed circuit board. Since this end region only affects a relatively small section of the conductor tracks in relation to the total length of the connection elements, such an increase in the cross section remains without a negative effect on the transmission of undesired heat to the sensor element.
  • the film is reinforced with the contact points in this end region, this makes it easier to establish an electrical connection to the rigid printed circuit board, in particular a plug connection.
  • the temperature sensor according to the invention can advantageously be used to generate a measured value representing the interior temperature of the motor vehicle in an arrangement for climate control of a motor vehicle interior.
  • the temperature sensor is placed in such a way that it projects into or through an opening in a wall delimiting the vehicle interior.
  • the arrangement is arranged in a dashboard or in a central sole arranged front panel with controls, wherein in the front panel or one of the controls there is an opening through or into which the temperature sensor of the temperature sensor protrudes, and the arrangement has a rigid printed circuit board with electronic components arranged behind the front panel, with which the connection elements of the temperature sensor are electrically connected.
  • the sensor element is fastened on a spacer element made of a poorly heat-conducting material, in particular plastic, at a distance from the rigid circuit board, the spacer element being supported on the rigid circuit board.
  • the spacer element is designed as a hollow body.
  • the spacer element itself has only a small material cross section and thus a high thermal conduction resistance. Due to the design of the spacer element as a hollow body ... there is air inside the spacer element, which is known to have poor thermal conductivity.
  • the spacer element can be designed as a hollow cylinder or hollow cone.
  • the cavity can also be subdivided, so that individual air-filled chambers result.
  • the spacer element can also have two or more partial areas which are only connected to one another at points. This results in areas of particularly small cross-section which hinder undesired heat conduction.
  • connection elements of the temperature sensor are electrically conductive with the rigid conductor plate connected, this represents a particularly simple installation option.
  • a further temperature sensor for determining one is on the rigid printed circuit board
  • Correction value for the measured interior temperature and a correction unit for determining the correction value and for correcting the measured interior temperature are available. In this way, any remaining heat input from the climate control device into the temperature sensor can be compensated.
  • Fig. 2 an arrangement of a tempera according to the invention. , door sensor in a control and operating device,
  • Fig. 4 a schematic representation of an air conditioning system of a motor vehicle.
  • FIG. 4 shows the essential components of an air conditioning and ventilation system of a motor vehicle, in which the temperature sensor according to the invention and the arrangement according to the invention for climate control are used.
  • Fresh air flap 2 is sucked in fresh air from the surroundings of the vehicle into the motor vehicle itself.
  • the position of the fresh air flap 2 is dependent on a servomotor 13. speed controlled by electrical signals that are output by the combined control and operating device 7.
  • Air can be drawn in from the passenger compartment 15 of the motor vehicle via the recirculation flap 3, which is controlled via a servomotor 14 as a function of electrical signals from the control and operating device 7. Circulating and fresh air are conveyed into the passenger compartment 15 by the fan 4.
  • the air passes an evaporator 6 of a refrigeration system and, if appropriate - depending on the position of a temperature flap 9 - a heat exchanger 8. In the heating mode, the air is heated by the heat exchanger 8.
  • the possibly cooled or heated air is supplied to the passenger compartment 15 via outflow 10.
  • the air distribution can be regulated with air distribution flaps 11. Several sensors supply actual values for the air conditioning system. In
  • the temperature sensor 1 shows an exemplary embodiment of the temperature sensor 1 according to the invention.
  • the temperature sensor 1 contains a flexible film 20 to which a temperature-dependent resistor 21 as a temperature-sensitive sensor element and an infrared sensor 22 are applied.
  • the temperature-dependent resistor 21 is applied to the film 20 as a non-wired component using thin-film technology.
  • Conductor tracks 23 applied to the film 20 serve as connection elements for establishing an electrical connection to the temperature-dependent resistor 21 and the infrared sensor 22
  • the width and thickness of the conductor tracks 23 are extremely small in relation to their length. While the length of the conductor tracks is typically a few centimeters, the width is of the conductor tracks 23, for example, only about a few 10 ⁇ m. Due to the resulting extremely small cross section of the conductor tracks 23, heat transfer via the conductor tracks 23 to the temperature-dependent resistor 21 and the infrared sensor 22 is largely avoided.
  • the conductor tracks 23 are widened as contact points 25 in an end region remote from the temperature-dependent resistor 21.
  • the flexible film 20 is also reinforced in the end region 24. This can be achieved, for example, by applying one or more further, possibly thicker films to the end region 24.
  • the formation of the conductor tracks 23 in the end region 24 as widened contact points 25 and the reinforcement of the film 20 in the end region 24 make the end region 24 with the contact points 25 suitable for producing a plug connection.
  • a plastic sheath (not shown here) is applied to the temperature-dependent resistor 21 and the infrared sensor 22 for protection, which also acts as a blocking filter for daylight, but is transparent in an infrared spectral range. As a result, daylight is kept away from the infrared sensor 22. Furthermore, the flexible film 20 has also been reinforced in the area 28 in which the temperature-dependent resistor 21 and the infrared sensor 22 are arranged.
  • the control and operating device 7 has a front panel 26 which faces the motor vehicle interior 15 and contains control elements, not shown here, in a known manner.
  • the front panel 26 has an opening 27 into which the temperature sensor 1 extends as far as the force vehicle interior 15 facing side of the front panel 26 protrudes.
  • the opening 27 can be closed with respect to the passenger compartment 15 by a thin film 38 which is impermeable in the visible spectral range and permeable in an infrared spectral range, so that the temperature sensor 1 is not visible to occupants of the vehicle.
  • the area 28 (FIG. 1) of the temperature sensor 1 containing the temperature-sensitive sensor element is arranged on a spacer element 29 designed as a hollow body.
  • the spacer 29 is supported on a rigid circuit board 30.
  • a plurality of components 31, 32, 33 are present on the rigid circuit board 30, which are connected to one another by conductor tracks (not shown in more detail) on the rigid circuit board 20 and form an electrical measuring and control circuit.
  • the component 31 is a further temperature sensor. It is used to determine a correction value for the measured interior temperature by means of the temperature sensor 1. In this way, any remaining influence of a temperature in the control and operating device 7 that differs from the interior temperature on the temperature measurement value of the temperature sensor 1 can be corrected.
  • correction values can be stored in the control unit 7 as a function of the deviation of the temperature measured by the temperature sensor 31 and the temperature measured by the temperature sensor 1.
  • Such a correction value is determined by means of the measurement and control circuit and the measured interior temperature is corrected.
  • the measurement and control circuit contains a microprocessor on which a corresponding correction program runs.
  • the microprocessor simultaneously forms the necessary control signals for the air conditioning system.
  • Corresponding control and regulation programs are known and need not be described in more detail here.
  • the temperature sensor 1 is connected with its area 24 remote from the sensor element to a plug socket 34 attached to the printed circuit board 30. The connection from the plug socket 34 to the components 32, 33 again takes place via conductor tracks (not shown) on the rigid printed circuit board 30.
  • the spacer element 29 accordingly has two partial regions 35, 36, which are connected to one another only at points via webs 37.
  • the only selective connection between the partial areas 35, 36 makes heat transfer between these partial areas and thus to a sensor element attached to the partial area 36 more difficult.
  • the two subregions 35, 36 are again designed in particular as hollow bodies.
  • the temperature sensor according to the invention is preferably part of the control and operating device of the air conditioning system.
  • this can also be arranged in an operating element, for example.
  • the front panel 26 generally forms a technical unit with the control unit and is usually installed in the center console or in the dashboard of the motor vehicle.
  • the actual control device is designed separately from the front panel 26, which is arranged in the center console.
  • Such an application can also be easily covered with the temperature sensor according to the invention by making the flexible film 20 with the conductor tracks 23 correspondingly long.
  • the temperature sensor according to the invention can also be attached outside the front panel 26 in the center console or the dashboard or at another suitable location in the vehicle.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un capteur thermique servant avant tout à mesurer la température de l'habitacle dans un système de climatisation automobile. Ce capteur thermique (1) comprend un élément de détection (21) sensible à la température et des éléments de raccordement pour établir une liaison électrique avec l'élément de détection (21). L'invention est caractérisée en ce que ces éléments de raccordement se présentent sous forme de piste conductrice (23) montée sur un film souple (20). Les éléments de raccordement étant ainsi conçus, seule une très faible quantité de chaleur est transmise à l'élément de détection (21) par conduction thermique des éléments de raccordement, une altération des valeurs de mesures étant ainsi largement évitée.
EP05701443A 2004-02-27 2005-01-05 Capteur thermique et dispositif pour climatiser l'habitacle d'un vehicule Withdrawn EP1718483A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004009605A DE102004009605A1 (de) 2004-02-27 2004-02-27 Temperatursensor und Anordnung zur Klimaregelung eines Kraftfahrzeuginnenraumes
PCT/EP2005/050030 WO2005082651A2 (fr) 2004-02-27 2005-01-05 Capteur thermique et dispositif pour climatiser l'habitacle d'un vehicule

Publications (1)

Publication Number Publication Date
EP1718483A2 true EP1718483A2 (fr) 2006-11-08

Family

ID=34853782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05701443A Withdrawn EP1718483A2 (fr) 2004-02-27 2005-01-05 Capteur thermique et dispositif pour climatiser l'habitacle d'un vehicule

Country Status (5)

Country Link
EP (1) EP1718483A2 (fr)
KR (1) KR20070004659A (fr)
CN (1) CN101133306A (fr)
DE (1) DE102004009605A1 (fr)
WO (1) WO2005082651A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9345620B2 (en) 2008-10-30 2016-05-24 Gerhard Youssefi Apparatus and method for providing a laser shot file

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
DE102006040664A1 (de) * 2006-08-30 2008-03-13 Valeo Klimasysteme Gmbh Fahrgastzellentemperaturbestimmung
DE102010015657A1 (de) 2010-04-20 2011-10-20 Valeo Schalter Und Sensoren Gmbh Sensorbaugruppe zur Erfassung der Temperatur im Innenraum eines Fahrzeugs und Vorrichtung zur Ermittlung der Temperatur im Innenraum eines Fahrzeugs
KR101287498B1 (ko) * 2011-12-29 2013-07-19 우진 일렉트로나이트(주) 다회 측정 온도 프로브
DE102016110458B4 (de) * 2016-06-07 2023-11-09 Valeo Schalter Und Sensoren Gmbh Bedieneinrichtung für eine Klimaautomatik eines Kraftfahrzeugs, Klimaautomatik sowie Kraftfahrzeug
CN108749572A (zh) * 2018-04-11 2018-11-06 航天科技控股集团股份有限公司 一种汽车仪表上的车外温度显示修正方法
DE102018116277A1 (de) * 2018-07-05 2020-01-09 Valeo Schalter Und Sensoren Gmbh Vorrichtung zur Erfassung einer Innenraumtemperatur eines Fahrzeugs mit einem Infrarot-Lichtleiterelement und einem Strahlungssensor, sowie Klimaeinrichtung für ein Kraftfahrzeug
KR102603059B1 (ko) * 2018-09-21 2023-11-16 현대자동차주식회사 차량의 실내온도 측정장치 및 측정방법
CN109632123A (zh) * 2018-12-07 2019-04-16 苏州长风航空电子有限公司 一种柔性贴片式温度传感器
DE102019107338A1 (de) * 2019-04-03 2020-10-08 Valeo Schalter Und Sensoren Gmbh Sensorvorrichtung, Verfahren zur Herstellung einer Sensorvorrichtung und Fahrzeug
DE102021117871A1 (de) * 2021-07-12 2023-01-12 Valeo Schalter Und Sensoren Gmbh Temperaturmesseinrichtung, Dachbedienvorrichtung sowie System zum Bereitstellen eines Temperaturwerts für eine Klimaanlage eines Kraftfahrzeugs

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JP2792377B2 (ja) * 1993-02-18 1998-09-03 松下電工株式会社 半導体装置
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DE10056693C2 (de) * 2000-11-15 2003-08-21 Siemens Ag Anordnung eines Infrarotsensors einer Kraftfahrzeugklimaanlage
DE10249583A1 (de) * 2002-10-24 2004-05-13 Preh-Werke Gmbh & Co. Kg Anordnung zur Ermittlung der Innenraumtemperatur
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9345620B2 (en) 2008-10-30 2016-05-24 Gerhard Youssefi Apparatus and method for providing a laser shot file

Also Published As

Publication number Publication date
WO2005082651A2 (fr) 2005-09-09
KR20070004659A (ko) 2007-01-09
WO2005082651A3 (fr) 2007-05-24
CN101133306A (zh) 2008-02-27
DE102004009605A1 (de) 2005-09-15

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