DE2532326A1 - Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths - Google Patents

Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths

Info

Publication number
DE2532326A1
DE2532326A1 DE19752532326 DE2532326A DE2532326A1 DE 2532326 A1 DE2532326 A1 DE 2532326A1 DE 19752532326 DE19752532326 DE 19752532326 DE 2532326 A DE2532326 A DE 2532326A DE 2532326 A1 DE2532326 A1 DE 2532326A1
Authority
DE
Germany
Prior art keywords
cells
grid
coarse
luminescent diodes
fine
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Withdrawn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
DE19752532326
Other languages
German (de)
Inventor
Josef F Dipl Ing Menke
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.)
Elektro Optik GmbH and Co KG
Original Assignee
Elektro Optik GmbH and Co KG
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 Elektro Optik GmbH and Co KG filed Critical Elektro Optik GmbH and Co KG
Priority to DE19752532326 priority Critical patent/DE2532326A1/en
Priority to NL7600666A priority patent/NL7600666A/en
Priority to GB7259/76A priority patent/GB1545634A/en
Priority to SE7602463A priority patent/SE7602463L/en
Priority to IT20657/76A priority patent/IT1055923B/en
Priority to IL49278A priority patent/IL49278A0/en
Priority to CH542276A priority patent/CH607495A5/xx
Priority to FR7612789A priority patent/FR2312023A1/en
Publication of DE2532326A1 publication Critical patent/DE2532326A1/en
Priority to US05/905,900 priority patent/US4158137A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/007Radiation pyrometry, e.g. infrared or optical thermometry for earth observation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/025Interfacing a pyrometer to an external device or network; User interface
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/04Casings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/04Casings
    • G01J5/047Mobile mounting; Scanning arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/20Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
    • G01J5/602Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature using selective, monochromatic or bandpass filtering

Abstract

The procedure for producing and reproducing thermographic pictures uses a double screen with a coarse and a fine grid, the ratio of areas of square grid components being 16/1. The coarse and fine members are distributed over the screen in groups (1, 2, 3, 4) ... (11, 21, 31, 41) and comprise luminescent diodes with different colour responses. These respond to small temperature difference arising from a scene image on the screen, typically a landscape. The electronic circuit is formed by connecting groups of luminescent diodes in pairs to a series of operational amplifiers (5, 51, 6, 61, 7, 71), and series delay timing elements (8, 81, 9, 91). The equivalent temperature rise for a typical picture reception is calculated from an equation involving the geometry of the system, the intensity of light received per wave-length interval and the electrical and optical sensitivities.

Description

Verfahren zur Erzeugung thermi3cher Bilder Zusatz zu Patent (Anmeldung P 25 18 937.1) Die IIauptarimeldung betrifft ein Verfahren zur Erzeugung und Wiedergabe thermograiischer Bilder, insbesondere von Bildern von Gegenständen mit stark von einander abweichenden Tempersturen, sowie ein Gerät zur DurchfWirung dieses Verfahrens. Process for generating thermal images Addition to patent (registration P 25 18 937.1) The main message relates to a method for generation and reproduction thermographic images, in particular images of objects with strong of different temperatures, as well as a device to carry out this process.

Bei dem Verfahren werden mehrere Raster verschiedcner Feinheit Ubereinander geschoben, so daß mit dem gröberen Raster Gegenstände größerer Ausdehnung aber kleiner Temperatur-Differenz wiedergegeben und mit dcm feineren Raster Gegeneta stünde geringerer räunilicher Ausdehnung aber großer Temperatur-Differenz angezeigt werden. hierbei ist es zweckmäßig, die Bild-Erzeugung und -Wiedorgabe so einzustellen,daß ein verhältnismäßig grobes Raster mit einem sehr feinen Raster kombiniert wird.In the process, several grids of different degrees of fineness are superimposed on one another pushed, so that with the coarser grid objects of larger dimensions but smaller Temperature difference shown and with the finer grid countereta would be lower Räunilicher expansion but large temperature difference are displayed. here it is advisable to set the image generation and playback so that a relatively coarse grid is combined with a very fine grid.

Bei der praktischen Durchführung verwendet man heute fast ausschließlich ein Zeilenabtast-Verfahren, wobei meist nicht eine Zeile, sondern eine ganze Zeilengruppe gleichzeitig abgetastet wird. Bei der den Gegenstand der Hauptanmeldung bildenden Erfindung wird das Bildraster mit einer Doppel-Zellengruppe erzeugt. Die optische Durchftlhrung des Verfahrens erfordert indessen einen ziemlichen technischen Aufwand.In practice, it is used almost exclusively today a line scan method, with mostly not a line, but a whole group of lines is scanned at the same time. In the case of the subject of the main application Invention, the image grid is generated with a double cell group. The optical one Carrying out the process, however, requires a considerable amount of technical effort.

Durch die vorliegende Erfindung soll das Verfahren nach Patent (Anmeldung P 25 18 937.1) dahingehend vervollkommnet werden, daß ein Obereinander-Schreiben beider Raster in einfacher speise möglich wird.The present invention is intended to use the method according to the patent (application P 25 18 937.1) to the effect that writing on top of one another both grids in simple food becomes possible.

Beim erfindungsgemäßen Verfahren wird ein normales Abtast-Verfahren mit einem elektrischen Verfahren kombiniert, das aus den abgetasteten Werten auf elektrischem Wege ein Doppel-Raster erzeugt.In the method according to the invention, a normal scanning method is used combined with an electrical method, which is based on the sampled values electrical path creates a double grid.

Bei diesem elektrischen Verfahren werden Jeweils mehrere Zellen zu einer Gruppe zusammengefaßt und die Signale der Zellen jeder Gruppe einmal parallel und einmal einzeln verarbeitet. Beim Parallel-Schalten addieren sich die von den einzelnen Zellen aufgenommenen Werte zu einem Gruppenwert; daraus ergibt sich ein grobes Raster. Bei Einzel-Schaltung werden dagegen die von den einzelnen Zellen aufgenommenen Werte auch einzeln weitergegeben, und auf diese Weise erhält man eine größere Zahl eng nebeneinander stehender Werte,die gemeinsam ein Peinraster ergeben.In this electrical process, several cells are closed at a time a group combined and the signals of the cells of each group once in parallel and processed once individually. When switching in parallel, those of the add up values recorded in individual cells to form a group value; this results in a rough grid. In the case of individual switching, on the other hand, those of the individual cells are used The recorded values are also passed on individually, and in this way you get a larger number of closely spaced values that together result in a pain grid.

Die Anordnung der Zellen und die dazugehörige Schaltung sind in den beiliegenden Figuren für ein einfaches Beispiel dargestellt. Es zeigen: Fig.1 die Anordnung zweier Gruppen von Je vier Zellen und ihre Zusammenfassung zu Je einer Abtast-Einheit; Fig.2 ein Schaltbild für zwei Abtast-Eiiiheiten gemäß Fig.1.The arrangement of the cells and the associated circuitry are shown in accompanying figures for a simple example. They show: FIG. 1 the Arrangement of two groups of four cells each and their combination into one each Scanning unit; FIG. 2 is a circuit diagram for two scanning units according to FIG.

Vier Zellen, 1,2,3,4, sind zu einer Abtast-Einheit 10, vier weitere Abtast-Zellen, 1'2',3',4', zu einer zweiten Abtast-Einheit 10' zusammengefaßt. hierbei liegen die Abtast-Zellen 1 und 2 auf einer Zeile und die Abtast-Bellen 3 und 4 auf der nächsten Abtast-Zeile. Ebenso liegen die Zellen 1' und 2' auf einer Abtast-Zeile und die Zellen 3' und 4' auf der nächsten Abtast-Zeile. Wenn die Abtast-Einheit eines Rasters aus den vier Abtast-Zellen wie angegeben besteht, so wird das Grob-Raster elektrisch durch Parallel-Schaltung aller vier Zellen erzeugt, während das Feinraster durch Serien-Abtastung der Zellen 1 und 2 bzw. 3 und 4 und Zusammenfassen der beiden Paare erzeugt wird. Dieses Raster ist flächengeometrisch um den Faktor 4 feiner. Das Gleiche gilt natürlich auch für eine Gruppe 3 x 3 « 4 x 4 usw.Four cells, 1, 2, 3, 4, are to a scanning unit 10, four more Scanning cells, 1'2 ', 3', 4 ', combined to form a second scanning unit 10'. here scan cells 1 and 2 are on one line and scan cells 3 and 4 are on one line the next scan line. Likewise, cells 1 'and 2' are on one scan line and cells 3 'and 4' on the next scan line. When the scanning unit If a grid consists of the four sample cells as indicated, then the coarse grid becomes electrically generated by connecting all four cells in parallel, while the fine grid by serial scanning of cells 1 and 2 or 3 and 4 and combining the two Pairs is generated. In terms of area geometry, this grid is finer by a factor of 4. The same applies of course to a group of 3 x 3 «4 x 4, etc.

In Fig.2 sind die Einzelverstärker der Zellen mit 1 bis 4 bzw. 1' bi3 4' bezeichnet. Zellenveratärker 1 ist über ein iiaufzeitglied 8, dessen Laufzeit gleich der Abtastzeit-Differenz eines Objekt-Bildpunktes zwischen den Zeilen 1 und 2 ist, mit Leitung 11 verbunden. Zellenverstärker 2 ist mit Leitung 12 verbunden. Die Leitungen 11 und 12 speisen den Additions-Verstärker 6 zur Gewinnung des Serien-Abtastsignals 16 von Zeile 1 des Feinrasters. Entsprechend arbeiten die Einzelverstärker 9 und 4 mit Additions-Verstärker 7 zur Gewinnung von Serien-Abtastsignal 17 für Zeile 2 des Lpeinrasterz. Das Grobraster-Signal 15 wird aus der Summe der Zellenverstirker-Signale 1, 2, 3, 4 über die Leitungen 21, 22, 23 und 24 mit Hilfe des Additions-Verstärkers 5 gewonnen.In Fig. 2 the individual amplifiers of the cells with 1 to 4 or 1 ' bi3 4 '. Zellveratärker 1 is via an iiaaufzeitelement 8, whose running time equal to the scanning time difference of an object pixel between lines 1 and 2 is connected to line 11. Cell repeater 2 is connected to line 12. The lines 11 and 12 feed the addition amplifier 6 for obtaining the serial sampling signal 16 of line 1 of the fine grid. The individual amplifiers 9 and 9 work accordingly 4 with addition amplifier 7 for obtaining serial scanning signal 17 for line 2 of the Lpeinrasterz. The coarse raster signal 15 is the sum of the cell amplifier signals 1, 2, 3, 4 via lines 21, 22, 23 and 24 using the addition amplifier 5 won.

In gleicher cise sind die Zellen 1' und 2' einerseits mit dem Addition-Verstärker 6', andererseits mit dem Additions-Verstärker 5' verbunden und die Zellen 3' und 4' mit dem Additions-Verstärker 7' und dem Additions-Verstärker 5'. Von den Verstärkern gelangen die Signale über die Leitungen 15, 16, 17 und 15', 16', 17' in die Auswerte-Elektronik.In the same cise, cells 1 'and 2' are on the one hand with the addition amplifier 6 ', on the other hand connected to the addition amplifier 5' and the cells 3 'and 4 'with the addition amplifier 7' and the addition amplifier 5 '. From the amplifiers the signals reach the evaluation electronics via lines 15, 16, 17 and 15 ', 16', 17 '.

Durch entsprechende Wahl der Größe der Abtast-Einheiten, d.h.By appropriately choosing the size of the scanning units, i.

der Zahl der in einer Abtast-Sinheit enthaltenen Einzelzellen hat man es in der Hand, die Trennungsschärfe zwischen Grob-Raster und Fein-Raste@ im Voraus festzulegen. Um eine wirksame Untcrscheidung zwischen Grob- und Fein-Raster zu drzielen, d.h. möglichst hohe Temperatur-Auflösung mit dem Grobraster und möglichst hohe Detail-Auflösung mit dem Feinraster, sollte man indessen mindestens den Faktor 9 für das Flächenverhältnis der Zellen des Grob- und des Peinrastere verwenden.the number of individual cells contained in a scanning unit you have it in your hand, the sharpness of distinction between coarse raster and fine raster @ im To be set in advance. To make an effective distinction between coarse and fine screens to aim, i.e. as high a temperature resolution as possible with the coarse grid and if possible high detail resolution with the fine grid, one should at least the factor Use 9 for the area ratio of the cells of the coarse and Peinrastere.

Claims (4)

P a t e n t - A n s p r ü c h eP a t e n t - A n s p r ü c h e 1. Verfahren zur Erzeugung und Wiedergabe thermografischer Bilder, insbesondere nach Patent (Anmeldung P 25 18 937.1), dadurch gekennzeichnet, daß die Erzeugung eines Doppel-Rasters auf elektrischem Wege erfolgt.1. Process for generating and reproducing thermographic images, in particular according to patent (application P 25 18 937.1), characterized in that a double grid is generated electrically. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß mehrere Zellen (z.B. 1 bis 4) zu einer kruppe (10) zusammengefaßt werden, und daß diese Zellen zur Erzeugung eines Grobrasters parallel und zur Erzeugung eines Feinrasters einzeln geschaltet werden.2. The method according to claim 1, characterized in that several Cells (e.g. 1 to 4) are combined to form a croup (10), and that these Cells for generating a coarse grid in parallel and for generating a fine grid can be switched individually. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß eine bestimmte Zahl von Zellen, z.B, vier, in Form eines Quadrats von einer Seitenlänge gleich der Grundzahl angeordnet und so geschaltet werden, daß bei einer Schaltung das Grobraster elektrisch durch Parallel-Schaltung aller vier Zellen (1,2,3,4) erzeugt wird, während bei der anderen Schaltung das Feinraster durch oerien-Abtastung der Zellen 1 und 2 bzw. 3 und 4 erzeugt wird.3. The method according to claims 1 and 2, characterized in that that a certain number of cells, e.g. four, in the form of a square of one Side length equal to the base number arranged and switched so that with one Switching the coarse grid electrically by connecting all four cells in parallel (1,2,3,4) is generated, while in the other circuit the fine grid by oerien-scanning of cells 1 and 2 or 3 and 4 is generated. 4. Verfahren nach den Anspruche 1 bis 3, dadurch gekennæeichnet, daß die Parallel-Schaltung elektrisch durch einen Additions-Verstärker (5 bzw.5') bewirkt wird, während die Serien-Abtastung über Additions-Verstärker (6,7 bzw.6'7') mit entsprechend vorgeschalteten Laufzeitgliedern (8,9 bzw.8',9' erfolgt.4. The method according to claims 1 to 3, characterized gekennæeichnet that the parallel connection is effected electrically by an addition amplifier (5 or 5 ') is, during the serial sampling via addition amplifier (6,7 or 6'7 ') with corresponding upstream delay elements (8, 9 or 8 ', 9').
DE19752532326 1975-04-29 1975-07-19 Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths Withdrawn DE2532326A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE19752532326 DE2532326A1 (en) 1975-07-19 1975-07-19 Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths
NL7600666A NL7600666A (en) 1975-04-29 1976-01-22 PROCEDURE FOR THE PRODUCTION AND DISPLAY OF THERMOGRAPHIC IMAGES, AND THE DEVICE FOR PERFORMING THIS PROCEDURE.
GB7259/76A GB1545634A (en) 1975-04-29 1976-02-24 Thermographic images
SE7602463A SE7602463L (en) 1975-04-29 1976-02-26 METHOD OF CREATING AND RETURNING THERMOGRAPHIC IMAGES AND DEVICES FOR PERFORMING THE SET
IT20657/76A IT1055923B (en) 1975-04-29 1976-02-27 PROCEDURE FOR THE GENERATION AND REPRODUCTION OF THERMO GRAPHIC IMAGES AND EQUIPMENT FOR IMPLEMENTING THE PROCEDURE
IL49278A IL49278A0 (en) 1975-04-29 1976-03-24 Method of producing and displaying thermographic images
CH542276A CH607495A5 (en) 1975-04-29 1976-04-28
FR7612789A FR2312023A1 (en) 1975-04-29 1976-04-29 PROCESS AND APPARATUS FOR THE PRODUCTION AND RESTITUTION OF THERMOGRAPHIC IMAGES
US05/905,900 US4158137A (en) 1975-04-29 1978-05-15 Method of and thermograph for producing and displaying thermographic pictures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752532326 DE2532326A1 (en) 1975-07-19 1975-07-19 Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths

Publications (1)

Publication Number Publication Date
DE2532326A1 true DE2532326A1 (en) 1977-02-03

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Application Number Title Priority Date Filing Date
DE19752532326 Withdrawn DE2532326A1 (en) 1975-04-29 1975-07-19 Thermographic picture formation and reproduction - is by screen containing coarse and fine array of luminescent diodes responsive to different wave lengths

Country Status (1)

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DE (1) DE2532326A1 (en)

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