DE10110369A1 - Cooling arrangement for roof-mounted, vehicle occupant sensor system employs Peltier-effect element in close thermal contact with CCD camera system - Google Patents
Cooling arrangement for roof-mounted, vehicle occupant sensor system employs Peltier-effect element in close thermal contact with CCD camera systemInfo
- Publication number
- DE10110369A1 DE10110369A1 DE10110369A DE10110369A DE10110369A1 DE 10110369 A1 DE10110369 A1 DE 10110369A1 DE 10110369 A DE10110369 A DE 10110369A DE 10110369 A DE10110369 A DE 10110369A DE 10110369 A1 DE10110369 A1 DE 10110369A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor system
- arrangement according
- cooling
- image acquisition
- roof
- 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- Withdrawn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
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 230000005679 Peltier effect Effects 0.000 title abstract 2
- 238000001931 thermography Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/024—Arrangements for cooling, heating, ventilating or temperature compensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/38—Cooling arrangements using the Peltier effect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Abstract
Description
Die Erfindung betrifft eine Anordnung zur Kühlung eines Sensorsystems nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an arrangement for cooling a sensor system according to the Preamble of claim 1.
In Kraftfahrzeugen werden zukünftig verstärkt Sensorsysteme, beispielsweise aktive Bilderfassungssysteme oder Kameras, zur Überwachung des Fahrzeugin nenraums oder zur Positionserkennung der Fahrzeuginsassen eingesetzt. Solche Sensorsysteme müssen an einer aus mechanischer und optischer Hinsicht opti malen Stelle des Fahrzeugs befestigt sein. Hierzu eignet sich vorteilhaft der vor dere Knotenpunkt des Dachhimmels.In the future, sensor systems will be increasingly used in motor vehicles, for example active image acquisition systems or cameras, for monitoring the vehicle interior or for position detection of vehicle occupants. Such Sensor systems must opti from a mechanical and optical point of view paint the vehicle. The front is advantageously suitable for this another node of the headliner.
Ein großer Nachteil besteht darin, dass sich diese Stelle, also der vordere Knoten punkt des Dachhimmels, durch direkte Sonneneinstrahlung auf sehr hohe Tempe raturen bis über 90°C erhitzen kann. Das hat zur Folge, dass die optoelektroni schen Bauelemente eines Sensorsystems an der oberen Grenze ihres Tempera turbereiches betrieben werden und sich somit durch stärkeres Rauschen und ein schlechteres Signal-Rausch-Verhältnis ihr Wirkungsgrad auf unannehmbar niedri ge Werte verschlechtert.A major disadvantage is that this point, i.e. the front node point of the headliner, due to direct sunlight at very high temperatures can heat up to over 90 ° C. As a result, the optoelektroni components of a sensor system at the upper limit of their tempera be operated in the range and thus by stronger noise and a worse signal-to-noise ratio their efficiency to unacceptably low values deteriorated.
Beispielsweise ist es aus der Satellitentechnik bekannt, Empfänger von Satelliten signalen mittels eines flüssigen Kühlmediums zu kühlen, um bei den vergleichs weise schwachen Signalen das Signal-Rausch-Verhältnis und damit den Wir kungsgrad zu verbessern.For example, it is known from satellite technology to receive satellites to cool signals by means of a liquid cooling medium in order to compare wise weak signals the signal-to-noise ratio and thus the we to improve efficiency.
Nachteile dieser Kühlweise bestehen darin, dass Leitungen für das flüssige Kühl medium verlegt und beispielsweise an eine Kältemaschine, beispielsweise an die Klimaanlage eines Fahrzeugs, angeschlossen sein müssen, was zu großen Abmes sungen beim Sensorsystem und hohem Gewicht führt und insgesamt ein recht hoher zusätzlicher und teurer Aufwand bedeutet.Disadvantages of this cooling method are that lines for liquid cooling medium laid and, for example, to a refrigerator, for example to the Air conditioning of a vehicle must be connected, resulting in large dimensions solutions with the sensor system and high weight and overall a right high additional and expensive effort means.
Der Erfindung liegt die Aufgabe zugrunde, eine Anordnung zur Kühlung für ein Sensorsystem nach dem Oberbegriff des Anspruchs 1 so zu gestalten, dass keine Leitungen für ein Kühlmedium notwendig sind und der für die Kühlung notwendige zusätzliche Aufwand gering bleibt.The invention has for its object an arrangement for cooling for To design the sensor system according to the preamble of claim 1 so that none Lines for a cooling medium are necessary and the necessary for cooling additional effort remains low.
Gelöst wird diese Aufgabe durch eine Anordnung zur Kühlung mit den im An spruch 1 angegebenen Merkmalen.This task is solved by an arrangement for cooling with the in the An pronounced 1 characteristics.
Die Anordnung nach Anspruch 1 weist die Vorteile auf, dass keine zusätzlichen Leitungen, auch keine elektrischen Leitungen für die Kühlvorrichtung installiert werden müssen, da für das Sensorsystem bereits installierte elektrische Leitun gen mitbenutzt werden können. Außerdem weist die Kühlvorrichtung kleine Ab messungen und geringes Gewicht auf, so dass sich auch das Gewicht und die Abmessungen des Sensorsystems nicht oder nur unwesentlich erhöhen. Zudem sind die Beschaffungskosten für die Kühlvorrichtung vergleichsweise gering.The arrangement according to claim 1 has the advantages that no additional Lines, also no electrical lines installed for the cooling device must be installed, since electrical lines already installed for the sensor system can be shared. In addition, the cooling device has small Ab measurements and light weight, so that the weight and the Do not increase or only slightly increase the dimensions of the sensor system. moreover the procurement costs for the cooling device are comparatively low.
Die Erfindung eignet sich als einfache und kostengünstige Kühlvorrichtung für ein Sensorsystem, das am Dachhimmel eines Fahrzeugs installiert ist.The invention is suitable as a simple and inexpensive cooling device for a Sensor system installed on the headlining of a vehicle.
Vorteilhafte Ausgestaltungen des Gegenstands nach Anspruch 1 sind in den Un teransprüchen angegeben.Advantageous embodiments of the object according to claim 1 are in the Un claims specified.
Die Erfindung wird nun anhand eines Ausführungsbeispiels unter Zuhilfenahme der Zeichnung erläutert, wobei die einzige Figur schematisch die Anordnung von optoelektronischen Komponenten und der Kühlvorrichtung in einem Sensorsy stem zeigt.The invention will now be described with the aid of an exemplary embodiment of the drawing explained, the single figure schematically the arrangement of optoelectronic components and the cooling device in one sensor system stem shows.
Die Figur zeigt ein Sensorsystem 1, wie es beispielsweise in einem Fahrzeug am Dachhimmel zur Innenraumüberwachung oder zur Sitzbelegungs- und Sitzpositi onserkennung verwendet wird. Beim Sensorsystem 1 handelt es sich beispiels weise um ein aktives Bilderfassungssystem, vorteilhaft um einen bekannten PMD- Sensor (photonic mixer device) oder um ein anderes Bilderfassungssystem geeig neter Art, beispielsweise um ein passives Bilderfassungssystem wie eine CCD- Kamera, eine CMOS-Kamera, eine Infrarot-Kamera oder eine Wärmebild-Kamera. Von einem Sendeteil 2 des aktiven Bilderfassungssystems 1 werden modulierte Strahlen 3 elektromagnetischer bzw. optischer Natur mittels einer geeigneten Optik oder eines Objektivs 4 auf ein Objekt 5 gerichtet. The figure shows a sensor system 1 , as it is used for example in a vehicle on the headliner for interior monitoring or for seat occupancy and seat position detection. Sensor system 1 is, for example, an active image acquisition system, advantageously a known PMD sensor (photonic mixer device) or another image acquisition system of a suitable type, for example a passive image acquisition system such as a CCD camera, a CMOS camera, an infrared camera or a thermal imaging camera. From a transmitting part 2 of the active image acquisition system 1 , modulated beams 3 of electromagnetic or optical nature are directed onto an object 5 by means of suitable optics or an objective 4 .
Beim Objekt 5 handelt es sich beispielsweise um einen Fahrzeuginsassen. Vom Objekt 5 reflektierte Strahlen 6 gelangen durch das Objektiv 4 auf ein Emp fangsteil 7 des aktiven Bilderfassungssystems 1.Object 5 is, for example, a vehicle occupant. Rays 6 reflected from the object 5 pass through the lens 4 to a receiving portion 7 of the active image acquisition system 1 .
Um das Signal-Rausch-Verhältnis und damit den Wirkungsgrad zu erhöhen, wer den Sendeteil 2 und/oder Empfangsteil 7 gekühlt und dadurch auf einer optima len Arbeitstemperatur gehalten. Dazu sind Sendeteil 2 und/oder Empfangsteil 7 auf einem Kühlelement 9 angeordnet und stehen in engem Kontakt mit dessen kühlender Seite 8.In order to increase the signal-to-noise ratio and thus the efficiency, who cooled the transmitting part 2 and / or receiving part 7 and thereby kept at an optimal working temperature. For this purpose, transmitting part 2 and / or receiving part 7 are arranged on a cooling element 9 and are in close contact with the cooling side 8 thereof.
Beim Kühlelement 9 handelt es sich vorzugsweise um ein bekanntes und im Han del günstig erhältliches Peltier-Element oder um ein vergleichbares Kühlelement 9 mit ähnlichen Eigenschaften. Die Spannungs- und Stromversorgung des Peltier- Elements 9 erfolgt vorteilhaft über die Spannungs- und Stromversorgung des akti ven Bilderfassungssystems 1, so dass keine zusätzliche Installation von Versor gungsleitungen erfolgen muss.The cooling element 9 is preferably a known and commercially available Peltier element or a comparable cooling element 9 with similar properties. The voltage and power supply of the Peltier element 9 is advantageously carried out via the voltage and power supply of the active image acquisition system 1 , so that no additional installation of supply lines has to take place.
Das Peltier-Element 9 wird vorteilhaft auf einem Gehäuseteil 11 des aktiven Bil derfassungssystems 1 montiert, damit die Wärme, die auf seiner Rückseite 10 entsteht, aus dem aktiven Bilderfassungssystem 1 heraus geführt und über das Dach an die Umgebung abgegeben wird.The Peltier element 9 is advantageously mounted on a housing part 11 of the active Bil derfassungssystems 1 so that the heat generated on its back side 10, is guided out of the active image capturing system 1 and discharged out through the roof to the environment.
Die Erfindung eignet sich als einfache und kostengünstige Kühlvorrichtung für ein Sensorsystem, das am Dachhimmel eines Fahrzeugs installiert ist.The invention is suitable as a simple and inexpensive cooling device for a Sensor system installed on the headlining of a vehicle.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10110369A DE10110369A1 (en) | 2001-03-03 | 2001-03-03 | Cooling arrangement for roof-mounted, vehicle occupant sensor system employs Peltier-effect element in close thermal contact with CCD camera system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10110369A DE10110369A1 (en) | 2001-03-03 | 2001-03-03 | Cooling arrangement for roof-mounted, vehicle occupant sensor system employs Peltier-effect element in close thermal contact with CCD camera system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10110369A1 true DE10110369A1 (en) | 2002-09-12 |
Family
ID=7676259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10110369A Withdrawn DE10110369A1 (en) | 2001-03-03 | 2001-03-03 | Cooling arrangement for roof-mounted, vehicle occupant sensor system employs Peltier-effect element in close thermal contact with CCD camera system |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10110369A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473193A1 (en) * | 2003-04-29 | 2004-11-03 | Robert Bosch Gmbh | Apparatus for cooling a camera |
| DE102008001675A1 (en) | 2008-05-09 | 2009-11-12 | Robert Bosch Gmbh | Camera module with improved cooling concept |
| DE102010064343A1 (en) | 2010-12-29 | 2012-07-05 | Volkswagen Ag | Method for cooling electronic module e.g. sensor, for vehicle i.e. motor car, involves transporting waste heat of electronics module to heat sink in region of roof sheets of vehicle by heat conductor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207283A1 (en) * | 1992-03-07 | 1993-09-09 | Webasto Karosseriesysteme | Cooling device for interior of car - has flap allowing fan to draw blow exterior or interior air past peltier cold generator in roof |
| DE4334098C2 (en) * | 1992-10-07 | 1996-10-17 | Hitachi Electronics | TV camera device |
| US5596228A (en) * | 1994-03-10 | 1997-01-21 | Oec Medical Systems, Inc. | Apparatus for cooling charge coupled device imaging systems |
| DE19647179A1 (en) * | 1996-11-14 | 1997-12-04 | Siemens Ag | Thermoelectric device for heat removal from semiconductor component |
| EP0858106A1 (en) * | 1997-02-07 | 1998-08-12 | Nec Corporation | Optoelectronic element module with peltier device |
-
2001
- 2001-03-03 DE DE10110369A patent/DE10110369A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207283A1 (en) * | 1992-03-07 | 1993-09-09 | Webasto Karosseriesysteme | Cooling device for interior of car - has flap allowing fan to draw blow exterior or interior air past peltier cold generator in roof |
| DE4334098C2 (en) * | 1992-10-07 | 1996-10-17 | Hitachi Electronics | TV camera device |
| US5596228A (en) * | 1994-03-10 | 1997-01-21 | Oec Medical Systems, Inc. | Apparatus for cooling charge coupled device imaging systems |
| DE19647179A1 (en) * | 1996-11-14 | 1997-12-04 | Siemens Ag | Thermoelectric device for heat removal from semiconductor component |
| EP0858106A1 (en) * | 1997-02-07 | 1998-08-12 | Nec Corporation | Optoelectronic element module with peltier device |
Non-Patent Citations (6)
| Title |
|---|
| 07211823 A * |
| 08031993 A * |
| 11034647 A * |
| 11214597 A * |
| 11289038 A * |
| JP Patent Abstracts of Japan: 05327031 A * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473193A1 (en) * | 2003-04-29 | 2004-11-03 | Robert Bosch Gmbh | Apparatus for cooling a camera |
| DE102008001675A1 (en) | 2008-05-09 | 2009-11-12 | Robert Bosch Gmbh | Camera module with improved cooling concept |
| DE102010064343A1 (en) | 2010-12-29 | 2012-07-05 | Volkswagen Ag | Method for cooling electronic module e.g. sensor, for vehicle i.e. motor car, involves transporting waste heat of electronics module to heat sink in region of roof sheets of vehicle by heat conductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8139 | Disposal/non-payment of the annual fee |