DE3821743A1 - Sensor for the detection of irradiation - Google Patents

Sensor for the detection of irradiation

Info

Publication number
DE3821743A1
DE3821743A1 DE3821743A DE3821743A DE3821743A1 DE 3821743 A1 DE3821743 A1 DE 3821743A1 DE 3821743 A DE3821743 A DE 3821743A DE 3821743 A DE3821743 A DE 3821743A DE 3821743 A1 DE3821743 A1 DE 3821743A1
Authority
DE
Germany
Prior art keywords
sensor
elements
sensor according
temperature
housing
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Withdrawn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
DE3821743A
Other languages
German (de)
Inventor
Peter Dipl Ing Nolting
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
Priority to DE3821743A priority Critical patent/DE3821743A1/en
Priority to IT8920873A priority patent/IT1230279B/en
Priority to FR8908644A priority patent/FR2633393B1/en
Publication of DE3821743A1 publication Critical patent/DE3821743A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/0075—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being solar radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment

Abstract

In a sensor (10) for the detection of solar irradiation (insolation) into a passenger compartment of a motor vehicle, at least two photodiodes (12, 13), separated optically from each other, are arranged so that each photodiode (12, 13) determines the light irradiation from a different direction. At the same time, a temperature sensor (16) is arranged between the photodiodes (12, 13). By means of this design, both an individual control of the air conditioning installation is possible for different places in the passenger cell, and also the influence of the direct solar irradiation can be detected and taken into account. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Sensor zur Erfassung der Einstrah­ lung in einen Raum nach der Gattung des Anspruchs 1. Bei derartigen bekannten, in der Praxis verwendeten Sensoren ist in einem lichtlei­ tenden Gehäuse eine Infrarot-Fotoempfangsdiode eingebaut. Das Gehäu­ se ist im Armaturenbrett eines Kraftfahrzeugs angeordnet. Das Signal dieses Sensors wird einer Klimaregelungsanlage zugeführt, die die Temperatur im Fahrgastraum des Kraftfahrzeugs regelt. Dabei bleiben aber Wärme- und Kälte-Strahlungseffekte unberücksichtigt. Dies be­ deutet, daß bei einem in der Sonne geparkten Fahrzeug bzw. bei einem Kaltstart des Fahrzeugs bei tiefen Außentemperaturen Fehlregelungen auftreten können.The invention is based on a sensor for detecting the radiation in a room according to the preamble of claim 1. In such known sensors used in practice is in a lichtlei an infrared photo-receiving diode. The case se is arranged in the dashboard of a motor vehicle. The signal this sensor is fed to a climate control system, which Temperature in the passenger compartment of the motor vehicle regulates. Stick to it but ignores heat and cold radiation effects. This be indicates that in a vehicle parked in the sun or in a Cold start of the vehicle at low outside temperatures may occur.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Sensor mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß eine Erkennung der Einstrahlrichtung des Lichts ermöglicht wird. Mit Hilfe dieses Sen­ sors sind gezielte Maßnahmen für eine unterschiedliche Klimatisie­ rung der Fahrer- und der Beifahrerseite zulässig, wie z.B. durch ei­ ne unterschiedliche Belüftung, Temperierung oder Luftverteilung. Das Signal des zugleich vorhandenen Temperatursensors kann zum einen für eine Kompensation des Temperaturgangs der Fotodioden verwendet wer­ den, zum anderen kann die Temperatur der bestrahlten Oberfläche selbst bestimmt werden. Dadurch ist es möglich, genau den Einfluß der unmittelbaren Lichteinstrahlung sowie den der langwelligen Wärmestrahlung zu erfassen.The sensor according to the invention with the characteristic features of Claim 1 has the advantage that a detection of Direction of incidence of the light is made possible. With the help of this sen sensors are targeted measures for a different climate Driver and passenger side permitted, e.g. through egg ne different ventilation, temperature control or air distribution. The  Signal of the temperature sensor that is also present can be used for compensation of the temperature response of the photodiodes used the, on the other hand, the temperature of the irradiated surface be determined yourself. This makes it possible to precisely influence of direct light and long-wave Detect heat radiation.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vor­ teilhafte Weiterbildungen des im Anspruch 1 angegebenen Sensors möglich.The measures listed in the subclaims provide for partial developments of the sensor specified in claim 1 possible.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung darge­ stellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen die Fig. 1 in der Draufsicht ein Ausführungsbeispiel und die Fig. 2 bis 4 je in einem Längsschnitt verschiedene Ausführungs­ beispiele des Sensors.Embodiments of the invention are shown in the drawing Darge and explained in more detail in the following description. They show: Fig. 1 in a top view an exemplary embodiment and FIGS. 2 to 4 respectively different in a longitudinal section of the sensor execution examples.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In Fig. 1 ist mit 10 ein Sensor bezeichnet, der ein prismenför­ miges Gehäuse 11 aufweist. In je zwei Seitenflächen des Gehäuses 11 ist je eine Fotodiode 12, 13 angeordnet, so daß die optisch vonein­ ander getrennten Fotodioden 12, 13 die Lichteinstrahlung in je einer anderen Richtung bestimmen. Die Empfindlichkeit der Fotodioden 12, 13 soll im sichtbaren Bereich und/oder im nahe sich daran anschlie­ ßenden infraroten Bereich liegen. Damit läßt sich der Einfluß der unmittelbaren Sonneneinstrahlung erfassen. Ferner ist im Bereich der durch die beiden Seitenflächen gebildeten Kante 15 ein gegenüber der Umgebung des Gehäuses 11 thermisch entkoppelter Temperatursensor 16 in der Oberfläche des Gehäuses 11 eingelassen. In Fig. 1, 10 denotes a sensor which has a prism-shaped housing 11 . In each two side surfaces of the housing 11 , a photodiode 12 , 13 is arranged so that the optically separated photodiodes 12 , 13 determine the light radiation in a different direction. The sensitivity of the photodiodes 12 , 13 should be in the visible range and / or in the infrared range close to it. The influence of direct sunlight can thus be recorded. Further, in the region of the edge formed by the two side surfaces is against the environment of the housing 11 thermally decoupled temperature sensor 15 embedded in the surface 16 of the housing. 11

Der Sensor 10 selbst ist im nicht dargestellten Armaturenbrett eines Kraftfahrzeugs angeordnet und dient zur Erfassung der Lichtintensi­ tät der Sonneneinstrahlung in die Fahrgastzelle des Kraftfahrzeugs. Sein Meßsignal wird einer Klimaregelungsanlage zugeführt, die die Temperatur im Fahrgastraum regelt. Um diese Temperatur mit Hilfe ei­ nes Heizers oder einer Kälteanlage genau regeln zu können, muß mit Hilfe des Sensors 10 die durch die Sonneneinstrahlung bewirkte Auf­ heizung der Fahrgastzelle ermittelt werden. Da die Fotodioden 12, 13 die Lichteinstrahlung in unterschiedlichen Richtungen erfassen, kann der Klimaregelungsanlage ein entsprechend individuelles Meßsignal zugeführt werden, um die Temperatur in der Fahrgastzelle an bestimm­ ten Orten unterschiedlich zu regeln. So ist es z.B. möglich, auf der Fahrer- und der Beifahrerseite oder auf den Vorder- bzw. Hinter­ sitzen eine unterschiedliche und den individuellen Wünschen der In­ sassen angepaßte Klimatisierung zu erreichen.The sensor 10 itself is arranged in the dashboard, not shown, of a motor vehicle and is used to detect the light intensity of the solar radiation in the passenger compartment of the motor vehicle. Its measurement signal is fed to a climate control system that regulates the temperature in the passenger compartment. In order to be able to precisely regulate this temperature with the aid of a heater or a refrigeration system, the sensor 10 must be used to determine the heating caused by the solar radiation on the passenger compartment. Since the photodiodes 12 , 13 detect the light radiation in different directions, the climate control system can be supplied with a corresponding individual measurement signal in order to regulate the temperature in the passenger compartment differently at certain locations. It is possible, for example, to achieve different air conditioning on the driver and passenger side or on the front or rear seats, which is adapted to the individual needs of the passengers.

Im Ausführungsbeispiel nach Fig. 2 sind im Gehäuse 20 zwei Kanäle 21, 22 ausgebildet, die zu den im Gehäuse 20 eingelassenen Fotodio­ den 12, 13 führen. Im Bereich der Öffnung der Känale 21, 22 sind diese so angeordnet, daß sich die Verlängerungen ihrer Achsen schneiden. Dadurch kann nur parallel zu diesen Achsen einfallendes Licht zu den jeweiligen Fotodioden 12, 13 gelangen. Zwischen den beiden Öffnungen der Kanäle 21, 22 ist der thermisch gegenüber der Umgebung wiederum entkoppelte Temperatursensor 16 in die Oberfläche des Gehäuses 20 eingelassen, dessen elektrische Leitung 23 durch das Gehäuse 20 geführt ist.In the embodiment of FIG. 2, the housing 20 includes two channels 21, 22 are formed corresponding to the 12 lead to the inset in the housing 20 Fotodio, 13. In the area of the opening of the channels 21 , 22 these are arranged so that the extensions of their axes intersect. As a result, only light incident parallel to these axes can reach the respective photodiodes 12 , 13 . Between the two openings of the channels 21 , 22 , the temperature sensor 16 , which is thermally decoupled from the environment, is embedded in the surface of the housing 20 , the electrical line 23 of which is guided through the housing 20 .

Im Gehäuse 30 nach dem Ausführungsbeispiel der Fig. 3 sind statt Kanälen trichterförmige Ausnehmungen 31, 32 ausgebildet, deren der jeweils anderen Ausnehmung 31, 32 abgewandten Seitenwand einen grö­ ßeren Neigungswinkel aufweist als die der anderen Ausnehmung zuge­ wandte Seitenwand. Zwischen den Öffnungen der beiden Ausnehmungen 31, 32 ist wiederum der Temperatursensor 16 eingebaut, der nur mit den Fotodioden in engem thermischen Kontakt steht. In the housing 30 according to the embodiment of FIG. 3, funnel-shaped recesses 31 , 32 are formed instead of channels, the side wall of which faces away from the other recess 31 , 32 has a larger inclination angle than the side wall facing the other recess. Between the openings of the two recesses 31 , 32 , in turn, the temperature sensor 16 is installed, which is in close thermal contact only with the photodiodes.

Wie in Fig. 4 dargestellt, ist es aber auch möglich, die Fotodioden 12, 13 parallel zueinander in der Oberfläche eines Gehäuses 40 anzu­ ordnen. Um die Lichteinstrahlung in unterschiedliche Richtungen be­ stimmen zu können, ist zwischen den Fotodioden 12, 13 eine Trenn­ scheibe 41 aus teil- oder völlig durchlässigen Scheiben angebracht. Besonders vorteilhaft ist es, wenn sich im Bereich der Trennscheibe 41 auch der Temperatursensor 16 befindet. Durch diese Anordnung des Temperatursensors 16 kann dieser besonders gut die Temperatur im Bereich beider Fotodioden bestimmen.As shown in FIG. 4, it is also possible to arrange the photodiodes 12 , 13 parallel to one another in the surface of a housing 40 . In order to be able to determine the light irradiation in different directions, a separating disk 41 made of partially or completely permeable disks is attached between the photodiodes 12 , 13 . It is particularly advantageous if the temperature sensor 16 is also located in the area of the cutting disc 41 . This arrangement of the temperature sensor 16 can determine the temperature in the region of both photodiodes particularly well.

Wichtig ist bei den verschiedenen Ausführungsbeispielen, daß mit Hilfe mehrere Fotodioden eine Erkennung der Einstrahlrichtung, ins­ besondere der Sonnenstrahlen möglich ist. Ferner soll der Tempera­ tursensor möglichst nahe bei den Fotodioden angeordnet sein, dessen Meßsignal für die Kompensation des Temperaturgangs der Fotodioden verwendet wird, und auch die Temperatur der bestrahlten Oberfläche im Bereich der Fotodioden bestimmt.It is important in the various embodiments that with Help several photodiodes to detect the direction of radiation, ins special of the sun's rays is possible. Furthermore, the tempera Door sensor be arranged as close as possible to the photodiodes, the Measurement signal for the compensation of the temperature response of the photodiodes is used, and also the temperature of the irradiated surface determined in the area of the photodiodes.

Claims (10)

1. Sensor (10) zur Erkennung der Einstrahlung, insbesondere der Son­ neneinstrahlung, in einen Raum, insbesondere in die Fahrgastzelle eines Kraftfahrzeugs, mit Hilfe eines strahlungsempfindlichen Mit­ tels (12, 13), dadurch gekennzeichnet, daß das Mittel aus mindestens zwei Elementen (12, 13) besteht, die eine Einstrahlung in unter­ schiedlichen Richtungen bestimmen, und daß mindestens ein Temperatur­ sensor (16) zur Erfassung der Temperatur im Bereich der Elemente (12, 13) vorhanden ist.1. Sensor ( 10 ) for detecting the radiation, in particular the sun, in a room, in particular in the passenger compartment of a motor vehicle, with the aid of a radiation-sensitive means ( 12 , 13 ), characterized in that the means consists of at least two elements ( 12 , 13 ), which determine irradiation in different directions, and that at least one temperature sensor ( 16 ) for detecting the temperature in the region of the elements ( 12 , 13 ) is present. 2. Sensor nach Anspruch 1, dadurch gekennzeichnet, daß die Elemente (12, 13) auf den verschiedenen Seiten eines prismenförmigen Körpers (11) und der Temperatursensor (16) auf einer Kante (15) des Körpers (11) angeordnet sind.2. Sensor according to claim 1, characterized in that the elements ( 12 , 13 ) on the different sides of a prism-shaped body ( 11 ) and the temperature sensor ( 16 ) on an edge ( 15 ) of the body ( 11 ) are arranged. 3. Sensor nach Anspruch 1, dadurch gekennzeichnet, daß in einem Ge­ häuse (20) zu den Elementen (12, 13) führende Kanäle (21, 22) aus­ gebildet sind und daß sich mindestens die Verlängerungen der Achsen der im Bereich der Öffnung verlaufenden Kanäle (21, 22) schneiden.3. Sensor according to claim 1, characterized in that in a Ge housing ( 20 ) to the elements ( 12 , 13 ) leading channels ( 21 , 22 ) are formed and that at least the extensions of the axes extending in the region of the opening Cut channels ( 21 , 22 ). 4. Sensor nach Anspruch 1, dadurch gekennzeichnet, daß in einem Ge­ häuse (30) für jedes Element (12, 13) eine trichterförmige Ausneh­ mung ausgebildet ist und daß die dem anderen Element (12, 13) abge­ wandte Seitenwand der Ausnehmung (31, 32) flacher ausgebildet ist, als die ihm zugewandte Seitenwand. 4. Sensor according to claim 1, characterized in that in a Ge housing ( 30 ) for each element ( 12 , 13 ) a funnel-shaped Ausneh tion is formed and that the other element ( 12 , 13 ) abge facing side wall of the recess ( 31 , 32 ) is flatter than the side wall facing it. 5. Sensor nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Temperatursensor (16) zwischen den Öffnungen der Kanäle bzw. der Ausnehmungen (31, 32) angeordnet ist.5. Sensor according to one of claims 1 to 4, characterized in that the temperature sensor ( 16 ) between the openings of the channels or the recesses ( 31 , 32 ) is arranged. 6. Sensor nach Anspruch 1, dadurch gekennzeichnet, daß die Elemente (12, 13) in der Oberfläche eines Gehäuses (40) eingebracht sind und zwischen den Elementen (12, 13) eine Trennwand (41) angeordnet ist.6. Sensor according to claim 1, characterized in that the elements ( 12 , 13 ) in the surface of a housing ( 40 ) are introduced and between the elements ( 12 , 13 ) a partition ( 41 ) is arranged. 7. Sensor nach Anspruch 6, dadurch gekennzeichnet, daß die Trennwand (41) im Bereich des Temperatursensors (16) angeordnet ist, so daß der Temperatursensor (16) die Temperatur zu beiden Seiten der Trenn­ wand (41) bestimmt.7. Sensor according to claim 6, characterized in that the partition (41) arranged in the region of the temperature sensor (16), so that the temperature sensor (16) wall, the temperature on both sides of the partition (41) is determined. 8. Sensor nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Elemente (12, 13) Fotodioden sind, deren Empfindlichkeit im sichtbaren Bereich liegt.8. Sensor according to one of claims 1 to 7, characterized in that the elements ( 12 , 13 ) are photodiodes whose sensitivity is in the visible range. 9. Sensor nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Elemente (12, 13) Fotodioden sind, deren Empfindlichkeit im infraroten Bereich liegt.9. Sensor according to one of claims 1 to 7, characterized in that the elements ( 12 , 13 ) are photodiodes, the sensitivity of which is in the infrared range. 10. Sensor nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der oder die Temperatursensor(en) (16) von der Umgebung eines Gehäuses (11) des Sensors (10) weitgehend oder völlig thermisch ent­ koppelt ist/sind.10. Sensor according to one of claims 1 to 9, characterized in that the or the temperature sensor (s) ( 16 ) from the environment of a housing ( 11 ) of the sensor ( 10 ) is largely or completely thermally coupled ent.
DE3821743A 1988-06-28 1988-06-28 Sensor for the detection of irradiation Withdrawn DE3821743A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3821743A DE3821743A1 (en) 1988-06-28 1988-06-28 Sensor for the detection of irradiation
IT8920873A IT1230279B (en) 1988-06-28 1989-06-14 SENSOR FOR DETECTION OF IRRADIATION.
FR8908644A FR2633393B1 (en) 1988-06-28 1989-06-28 SENSOR FOR DETECTING INCIDENT RADIATION, IN PARTICULAR FOR DETECTING SOLAR RADIATION IN A MOTOR VEHICLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3821743A DE3821743A1 (en) 1988-06-28 1988-06-28 Sensor for the detection of irradiation

Publications (1)

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DE3821743A1 true DE3821743A1 (en) 1990-01-11

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Application Number Title Priority Date Filing Date
DE3821743A Withdrawn DE3821743A1 (en) 1988-06-28 1988-06-28 Sensor for the detection of irradiation

Country Status (3)

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DE (1) DE3821743A1 (en)
FR (1) FR2633393B1 (en)
IT (1) IT1230279B (en)

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FR2633393A1 (en) 1989-12-29
FR2633393B1 (en) 1994-03-25
IT8920873A0 (en) 1989-06-14
IT1230279B (en) 1991-10-18

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