EP0607418B1 - Visual inspection device for objects made of soft, flexible, flat material, especially textiles - Google Patents
Visual inspection device for objects made of soft, flexible, flat material, especially textiles Download PDFInfo
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- EP0607418B1 EP0607418B1 EP93919059A EP93919059A EP0607418B1 EP 0607418 B1 EP0607418 B1 EP 0607418B1 EP 93919059 A EP93919059 A EP 93919059A EP 93919059 A EP93919059 A EP 93919059A EP 0607418 B1 EP0607418 B1 EP 0607418B1
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- Prior art keywords
- test
- illumination
- support surface
- coordinated
- detectors
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/02—Inspecting textile materials visually
- D06H3/04—Inspecting textile materials visually wherein the material is supported on a table
Definitions
- the invention relates to a visual inspection device for objects made of flexible, flexible flat material, in particular textiles, clothing, laundry and the like, according to the preamble of patent claim 1. Laundry or textile inspection machines.
- the light box is covered by slats to reduce glare.
- a "dimmer" control is provided with which the operator can set the desired brightness.
- Such a laundry testing device consists of fluorescent tubes arranged in a housing, which are covered by a glass pane. This device has the disadvantage that it has a strong glare effect on the operating personnel, so that it is switched off frequently, which also affects the service life of the fluorescent tubes.
- the object of the invention is to provide a test device of the type mentioned, which is characterized by ease of use, in particular by avoiding intense light pollution or even glare to the operating personnel, with a simple and reliable construction.
- the achievement of this object is determined by the features of claim 1. Further developments of the invention are determined by the features of the subclaims.
- the laundry testing device 10 shown in FIG. 1, designated overall by 10, has a cuboid housing 12, in which fluorescent tubes 14 are arranged.
- the housing 12 is covered on its top with a glass pane 16, the other walls are made of opaque material.
- the glass pane 16 is designed as a frosted glass pane in order to reduce glare as much as possible.
- the fluorescent tubes are arranged in pairs alongside one another in the longitudinal extent of the housing 12 in right and left groups 30, 32, which can be switched on and off separately. This means that a wider or narrower field can be used for laundry testing.
- the fluorescent tubes 14 can be set to a lighter and a darker value, the darker value being set in such a way that it does not dazzle the operating personnel but does not permit a laundry test.
- the lighter value is set in such a way that it enables a laundry check but would blind the operating personnel.
- This brightness value, the test value, is used for the laundry test.
- Proximity switches 24 are arranged on the front and rear sides of the glass pane 16, the feed side 20 and the discharge side 22, wherein each of the respective front or rear proximity switches can also consist of groups of switches. If the fluorescent tubes 14 are divided into groups 30, 32, a proximity switch can be provided on the feed side 20 and on the discharge side 22 for each group. The proximity switches are switched in such a way that when the proximity switches are covered with a piece of laundry, the brightness of the fluorescent tubes 14 is regulated to the larger of the set values on both the feed side 20 and the discharge side 22, while when only one of the proximity switches is uncovered, the brightness is adjusted to the smaller value is regulated. It is thereby achieved that the greater brightness is set only when the glass pane is completely covered with a piece of laundry to be tested, whereby glare to the operating personnel is completely avoided.
- Fig. 3 shows the control and operating elements of the device.
- a mains connection 26 supplies the device with electrical energy, and it is switched on and off via a main switch 28.
- Groups 30 and 32 are switched via switches 34 and 36, light and dark control via a respective dark control controller 38 and a light control controller 40.
- the brightness control of the fluorescent tubes allows them to be adjusted to the individually desired strength by the respective operating personnel, namely to a lighter test value and a darker standing value.
- the lighter test value is used to check a piece of laundry placed on the glass pane, while the darker stand value switches on when no piece of laundry is placed on the laundry tester.
- the test value and the standing value can be fixed, but they can also be regulated separately from one another in order to enable the operating personnel to set the brightness values individually.
- proximity switches are arranged which generate a switching pulse when an object approaches.
- Such proximity switches are, for example, switches that react to movement.
- reflection light scanners can be used, which are preferably equipped with background suppression and thus respond to a narrow test area. B. on a test area of 10 to 20 mm.
- the proximity switches are switched in such a way that when the two proximity switches are covered, the brightness is set to the brighter test value, while when only one or none of the proximity switches is covered, the brightness is switched to the darker standard value. This ensures that only when the entire glass pane, which serves as a test field, is covered by a piece of laundry, is switched to the brighter test value, which enables the inspection of the laundry item. If the glass pane is only partially or not at all covered by a piece of laundry so that both proximity switches do not react, the brightness of the fluorescent tubes is reduced to the standard value, so that there is no glare for the operating personnel.
- the glass pane can be designed as a frosted glass pane, which further reduces the glare for the operating personnel.
- the fluorescent tubes especially in the case of wide laundry testing devices, which are required for the testing of larger items of laundry, can be divided into two or more adjacent groups, each of which can be switched on and off separately, so that one group is switched off when smaller items of laundry are put on can and therefore no side glare can be caused.
- the housing of the laundry tester can be laterally displaceable on guides, so that it can be laterally displaced over the edge of the table on which it is attached or over its support so far that bags and the like can be moved from the side over the test field can be pulled in order to enable checking of laundry bags, covers and the like.
- the glass pane 16 forms an object holder, the upper side of which is designed as a test object support surface AF.
- the proximity switches 24 act as presence detectors for a test object O indicated in FIG. 2, here: a piece of laundry.
- test objects are introduced into the working space R located above the support surface and spread out on the support surface so that glare can no longer occur. This is monitored by the detectors mentioned, which - together with the associated control elements, which are not shown here - are a monitoring device UVa.
- the fluorescent tubes form a total of a lighting device LV, which are optically operatively connected to the underside of the object holder. This itself has a visually diffusing effect and thus enables a flat view of the object.
- the proximity switches form an object detector device, with a group of adjacent proximity switches or proximity detectors of another, in a conventional manner, being assigned to a part TF of the test object support surface AF and thus to a lighting unit 30 or 32 formed by two lighting tubes 24.
- These detector groups deliver an object presence signal assigned to the degree of coverage of the assigned part TF of the test object support surface AF by test object material.
- These signals are combined in a logic circuit which is customary per se and therefore not to be described in more detail to form a lighting control signal in such a way that a predetermined operating value, in particular a maximum value, of the lighting is activated only when all detectors are present.
- the device can also be designed with technical advantages in such a way that the lighting device has a plurality of lighting units which can each be controlled individually - here, for example 30 and 32 -, each of which is assigned to a proximity detector or a group of proximity detectors logically conjunctively combined on the output side.
- the associated lighting unit is activated in accordance with a predetermined operating value, in particular a maximum value, of the lighting only when there is an object on the detector or group of detectors in question.
- a monitoring device UVb is provided with a brightness detector device HDV, which detects at least a part of the working space R or the test object support surface AF.
- the monitoring device further comprises a limit value / actual value comparison device GIV which is operatively connected to the output of the brightness detector device HDV, the output of which is in control connection with the lighting device LV stands.
- the test object receptacle PA has a translucent, optically diffusing test object support surface AF, the brightness detector device HDV having a plurality of brightness detectors HD assigned to a part TF of the test object support surface AF in a conventional manner. Each of these detectors is assigned to a part TF of the test object support surface AF by alignment and / or blanking. By arranging an appropriate number of detectors, the area resolution of the monitoring can be increased without great effort.
- the lighting device LV comprises a plurality of lighting units LE, each of which can be controlled individually, each of which is assigned to a brightness detector HD or a group of brightness detectors.
- the output of each brightness detector assigned to a lighting unit or the superimposed or averaged outputs of a group of such brightness detectors is connected to a limit value comparator GV of the limit value / actual value comparison device GIV.
- the limit value comparators GV and the associated lighting units are in a control connection which limits their intensity to a predeterminable maximum value.
- a separate, adjustable limit indicator GG is expediently provided for each brightness detector HD and thus for each assigned partial area TF within the limit value / actual value comparison device GIV on the limit value comparator GV in question.
- the subject of a special development of the invention is to use the control means already given to identify the dimmed lighting unit and thus the associated surface area by activating a spatially assigned optical signal transmitter of a conventional type.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Laminated Bodies (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
Description
Die Erfindung betrifft eine visuelle Prüfeinrichtung für Objekte aus weichflexiblem Flachmaterial, insbesondere Textilien, Bekleidungsstücke, Wäsche und dergleichen, gemäß dem Oberbegriff des Patentanspruchs 1. Zu solchen Einrichtungen gehören u.a. Wäsche- bzw. Textilbeschaumaschinen.The invention relates to a visual inspection device for objects made of flexible, flexible flat material, in particular textiles, clothing, laundry and the like, according to the preamble of
Bei einer bekannten Wäsche- bzw. Textilbeschaumaschine gemäß der DE 27 40 433 Al ist zur Verminderung der Blendung der Leuchtkasten durch Lamellen abgedeckt.In a known laundry or textile inspection machine according to DE 27 40 433 A1, the light box is covered by slats to reduce glare.
In einer Maschine zur Prüfung von Textilien gemäß der GB 1 187 470 C1 ist eine "Dimmer"-Regelung vorgesehen, mit welcher die Bedienungsperson die gewünschte Helligkeit einstellen kann.In a machine for testing textiles in accordance with
Es ist auch schon ein Wäscheprüfgerät im Handel, das zur Ueberprüfung von Wäsche dient, beispielsweise, um schadhafte oder sonstwie unbrauchbare Wäsche auszusortieren. Ein solches Wäscheprüfgerät besteht aus in einem Gehäuse angeordneten Leuchtröhren, die durch eine Glasscheibe abgedeckt sind. Dies Gerät hat den Nachteil, dass es eine starke Blendungswirkung auf das Bedienungspersonal ausübt, sodaß es häufig ausgeschaltet wird, was auch die Lebensdauer der Leuchtröhren beeinträchtigt.There is also a laundry tester on the market that is used to check laundry, for example to sort out damaged or otherwise unusable laundry. Such a laundry testing device consists of fluorescent tubes arranged in a housing, which are covered by a glass pane. This device has the disadvantage that it has a strong glare effect on the operating personnel, so that it is switched off frequently, which also affects the service life of the fluorescent tubes.
Aufgabe der Erfindung ist die Schaffung einer Prüfeinrichtung der eingangs genannten Art, die sich durch leichte Bedienbarkeit, insbesondere durch Vermeidung von intensiver Lichtbelästigung oder sogar Blendung des Bedienungspersonals, bei einfacher und betriebssicherer Bauweise auszeichnet. Die erfindungsgemäße Lösung dieser Aufgabe ist bestimmt durch die Merkmale des Patentanspruchs 1. Weiterbildungen der Erfindung sind bestimmt durch die Merkmale der Unteransprüche.The object of the invention is to provide a test device of the type mentioned, which is characterized by ease of use, in particular by avoiding intense light pollution or even glare to the operating personnel, with a simple and reliable construction. The achievement of this object is determined by the features of
Die Erfindung wird näher erläutert anhand der in den Zeichnungen dargestellten Ausführungsbeispiele. Hierin zeigt:
- Fig.1
- eine erste Ausführung einer erfindungsgemäßen Prüfeinrichtung in Form eines Wäscheprüfgeräts mit quaderförmiger, langgestreckterm Prüfobjektaufnahme in perspektivischer Darstellung,
- Fig.2
- einen in Längsrichtung der Prüfobjektaufnahme gemäß Fig.1 orientierten Vertikalschnitt des Geräts,
- Fig.3
- eine Ansicht der Schmalseite bzw. Stirnfläche der Prüfobjektaufnahme mit Bedienungs- und Einstellorganen in größerem Maßstab,
- Fig.4
- eine zweite Ausführung eines erfindungsgemäßen Wäscheprüfgeräts in Seitenansicht mit einem vertikalen Teilschnitt der Prüfobjektaufnahme und
- Fig.5
- ein schematisches Blockschaltbild der Steuer- bzw. Regeleinrichtung des Geräts nach Fig.4.
- Fig. 1
- 1 shows a first embodiment of a testing device according to the invention in the form of a laundry testing device with a cuboid, elongated test object holder in a perspective view,
- Fig. 2
- 3 shows a vertical section of the device oriented in the longitudinal direction of the test object according to FIG. 1,
- Fig. 3
- a view of the narrow side or end face of the test object with operating and setting elements on a larger scale,
- Fig. 4
- a second embodiment of a laundry testing device according to the invention in side view with a vertical partial section of the test object and
- Fig. 5
- a schematic block diagram of the control or regulating device of the device according to Fig.4.
Das in Fig.1 dargestellte, insgesamt mit 10 bezeichnete Wäscheprüfgerät 10 besitzt ein quaderförmiges Gehäuse 12, in dem Leuchtröhren 14 angeordnet sind. Das Gehäuse 12 ist an seiner Oberseite mit einer Glasscheibe 16 abgedeckt, die übrigen Wände bestehen aus lichtundurchlässigem Material. Die Glasscheibe 16 ist als Milchglasscheibe ausgestaltet, um die Blendung so weit wie möglich zu verringern. Die Leuchtröhren sind in der Längserstreckung des Gehäuses 12 paarweise nebeneinander angeordnet in rechten und linken Gruppen 30, 32, die getrennt ein- und ausschaltbar sind. Dadurch läßt sich wahlweise ein breiteres oder schmaleres Feld für die Wäscheprüfung einsetzen.The
In an sich bekannter Weise können die Leuchtröhren 14 auf einen helleren und einen dunkleren Wert eingestellt werden, wobei der dunklere Wert so eingestellt wird, daß er das Bedienungspersonal nicht blendet, aber keine Wäscheprüfung zuläßt. Der hellere Wert wird so eingestellt, daß er eine Wäscheprüfung ermöglicht, dabei aber das Bedienungspersonal blenden würde. Dieser Helligkeitswert, der Prüfwert, wird für die Wäscheprüfung verwendet.In a manner known per se, the
An den vorderen und hinteren Seiten der Glasscheibe 16, der Zuführungsseite 20 und der Abführungsseite 22, sind jeweils Annäherungsschalter 24 angeordnet, wobei jeder der jeweiligen vorderen oder hinteren Annäherungsschalter auch aus Gruppen von Schaltern bestehen kann. Sind die Leuchtröhren 14 in Gruppen 30, 32 aufgeteilt, so kann für jede Gruppe jeweils ein Annäherungsschalter an der Zuführungsseite 20 und an der Abführungsseite 22 vorgesehen sein. Die Annäherungsschalter sind so geschaltet, daß beim Abdecken der Annäherungsschalter mit einem Wäschestück sowohl an der Zuführungsseite 20 als auch an der Abführungsseite 22 die Helligkeit der Leuchtröhren 14 auf den größeren der eingestellten Werte geregelt wird, während beim Aufdecken nur eines der Annäherungsschalter die Helligkeit auf den kleineren Wert geregelt wird. Dadurch wird erreicht, daß nur bei völliger Bedeckung der Glasscheibe mit einem zu prüfenden Wäschestück die größere Helligkeit eingestellt wird, wodurch eine Blendung des Bedienungspersonals völlig vermieden wird.
Fig.3 zeigt die Regelungs- und Bedienungselemente des Geräts. Ein Netzanschluß 26 versorgt das Gerät mit elektrischer Energie, über einen Hauptschalter 28 wird es ein- und ausgeschaltet. Die Schaltung der Gruppen 30 und 32 erfolgt über die Schalter 34 und 36, die Hell- und Dunkelsteuerung über einen jeweiligen Dunkelsteuerregler 38 und einen Hellsteuerregler 40.Fig. 3 shows the control and operating elements of the device. A
Die Helligkeitssteuerung der Leuchtröhren erlaubt es, daß sie vom jeweiligen Bedienungspersonal auf die individuell gewünscht Stärke eingestellt werden kann, und zwar auf einen helleren Prüfwert und einen dunkleren Standwert. Der hellere Prüfwert dient zum Ueberprüfen eines auf die Glasscheibe aufgelegten Wäschestücks, während der dunklere Standwert sich einschaltet, wenn kein Wäschestück auf das Wäscheprüfgerät aufgelegt ist. Prüfwert und Standwert können fest eingestellt sein, sie können aber auch getrennt voneinander regelbar sein, um ein individuelles Einstellen der Helligkeitswerte für das Bedienungspersonal zu ermöglichen.The brightness control of the fluorescent tubes allows them to be adjusted to the individually desired strength by the respective operating personnel, namely to a lighter test value and a darker standing value. The lighter test value is used to check a piece of laundry placed on the glass pane, while the darker stand value switches on when no piece of laundry is placed on the laundry tester. The test value and the standing value can be fixed, but they can also be regulated separately from one another in order to enable the operating personnel to set the brightness values individually.
An den Enden der Glasscheibe, die die Leuchtröhren abdeckt, sind Annäherungsschalter angeordnet, die bei Annäherung eines Gegenstandes einen Schaltimpuls erzeugen. Als solche Annäherungsschalter dienen beispielsweise Schalter, die auf Bewegung reagieren. Als solche Annäherungsschalter können beispielsweise Reflexions-Lichttaster verwendet werden, die vorzugsweise mit Hintergrundausblendung ausgestattet sind und dadurch auf einen engen Testbereich ansprechen, so z. B. auf einen Testbereich von 10 bis 20 mm.At the ends of the glass pane, which covers the fluorescent tubes, proximity switches are arranged which generate a switching pulse when an object approaches. Such proximity switches are, for example, switches that react to movement. As such proximity switches, for example, reflection light scanners can be used, which are preferably equipped with background suppression and thus respond to a narrow test area. B. on a test area of 10 to 20 mm.
Die Annäherungsschalter sind so geschaltet, daß sie beim Abdecken beider Annäherungsschalter die Helligkeit auf den helleren Prüfwert einstellen, während beim Abdecken von nur einem oder keinem der Annäherungsschalter auf den dunkleren Standwert geschaltet wird. Dadurch wird erreicht, daß nur dann, wenn die gesamte Glasscheibe, die als Prüffeld dient, durch ein Wäschestück abgedeckt ist, auf den helleren Prüfwert geschaltet wird, wodurch das Prüfen des Wäschestücks ermöglicht wird. Wird die Glasscheibe nur teilweise oder garnicht von einem Wäschestück abgedeckt, so daß nicht beide Annäherungsschalter reagieren, so wird die Helligkeit der Leuchtröhren auf den Standwert abgesenkt, so daß keine Blendung für das Bedienungspersonal auftritt.The proximity switches are switched in such a way that when the two proximity switches are covered, the brightness is set to the brighter test value, while when only one or none of the proximity switches is covered, the brightness is switched to the darker standard value. This ensures that only when the entire glass pane, which serves as a test field, is covered by a piece of laundry, is switched to the brighter test value, which enables the inspection of the laundry item. If the glass pane is only partially or not at all covered by a piece of laundry so that both proximity switches do not react, the brightness of the fluorescent tubes is reduced to the standard value, so that there is no glare for the operating personnel.
Die Glasscheibe kann als Milchglasscheibe ausgeführt sein, wodurch die Blendung für das Bedienungspersonal noch weiter verringert wird. Außerdem können die Leuchtröhren, insbesondere bei breiten Wäscheprüfgeräten, die für die Prüfung von größeren Wäschestücken erforderlich sind, in zwei oder mehr nebeneinanderliegenden Gruppen aufgeteilt sein, die jeweils für sich getrennt ein- und ausschaltbar sind, so daß beim Auflegen kleinerer Wäschestücke eine Gruppe ausgeschaltet werden kann und dadurch keine seitliche Blendung verursacht werden kann.The glass pane can be designed as a frosted glass pane, which further reduces the glare for the operating personnel. In addition, the fluorescent tubes, especially in the case of wide laundry testing devices, which are required for the testing of larger items of laundry, can be divided into two or more adjacent groups, each of which can be switched on and off separately, so that one group is switched off when smaller items of laundry are put on can and therefore no side glare can be caused.
Das Gehäuse des Wäscheprüfgeräts kann auf Führungen seitlich verschiebbar sein, so daß es über den Rand des Tisches, auf dem es angebracht ist, bzw. über seinen Träger hinaus seitlich so weit verschoben werden kann, daß von der Seite her Säcke und dergleichen über das Prüffeld gezogen werden können, um auf diese Weise das Ueberprüfen von Wäschesäcken, Bezügen und dergleichen zu ermöglichen.The housing of the laundry tester can be laterally displaceable on guides, so that it can be laterally displaced over the edge of the table on which it is attached or over its support so far that bags and the like can be moved from the side over the test field can be pulled in order to enable checking of laundry bags, covers and the like.
In der gezeigten Darstellung bildet die Glasscheibe 16 eine Objektaufnahme, deren Oberseite als Prüfobjekt-Auflagefläche AF ausgebildet ist. Die Annäherungsschalter 24 wirken als Anwesenheitsdetektoren für ein in Fig.2 angedeutetes Prüfobjekt O, hie: ein Wäschestück. Diese Prüfobjekte werden in den über der Auflagefläche befindlichen Arbeitsraum R eingeführt und auf der Auflagefläche ausgebreitet, so daß keine Blendung mehr auftreten kann. Dies wird von den genannten Detektoren überwacht, die somit - zusammen mit den zugehörigen, hier nicht dargestellten Steuerelementen an sich üblicher Art - eine Ueberwachungseinrichtung UVa darstellen. Die Leuchtröhren bilde insgesamt eine Leuchtvorrichtung LV, die mit der Unterseite der Objektaufnahme in optischer Wirkverbindung stehen. Diese selbst wirkt optisch diffundierend und ermöglicht dadurch eine flächenhafte Betrachtung des Objekts.In the illustration shown, the
Die Annäherungsschalter bilden insgesamt eine Objekt-Detektoreinrichtung, wobei jeweils eine Gruppe von nebeneinanderliegenden Annäherungsschaltern oder Annäherungsdetektoren anderer, an sich üblicher Art einem Teil TF der Prüfobjekt-Auflagefläche AF und damit einer durch zwei Leuchtröhren 24 gebildeten Leuchteinheit 30 bzw. 32 zugeordnet ist. Diese Detektorgruppen liefern ein dem Abdeckungsgrad des zugeordneten Teils TF der Prüfobjekt-Auflagefläche AF durch Prüfobjektmaterial zugeordnetes Objekt-Anwesenheitssignal. Diese Signale werden in einer an sich üblichen und daher nicht näher zu beschreibenden Logikschaltung derart zu einem Beleuchtungs-Steuersignal zusammengefaßt, daß nur bei Objektanwesenheit an allen Detektoren ein vorgegebener Betriebswert, insbesondere ein Maximalwert, der Beleuchtung aktiviert ist.Overall, the proximity switches form an object detector device, with a group of adjacent proximity switches or proximity detectors of another, in a conventional manner, being assigned to a part TF of the test object support surface AF and thus to a
Insbesondere kann die Einrichtung jedoch mit arbeitstechnischen Vorteilen auch so ausgeführt werden, daß die Leuchtvorrichtung eine Mehrzahl von je für sich steuerbaren Leuchteinheiten - hier z.B. 30 und 32 - aufweist, deren jede einem Annäherungsdetektor oder einer Gruppe von ausgangsseitig logisch konjunktiv zusammengefaßten Annäherungsdetektoren zugeordnet ist. Damit wird nur bei Objektanwesenheit an dem betreffenden Detektor bzw. an der betreffenden Detektorgruppe die zugeordnete Leuchteinheit entsprechend einem vorgegebenen Betriebswert, insbesondere ein Maximalwert, der Beleuchtung aktiviert.In particular, however, the device can also be designed with technical advantages in such a way that the lighting device has a plurality of lighting units which can each be controlled individually - here, for example 30 and 32 -, each of which is assigned to a proximity detector or a group of proximity detectors logically conjunctively combined on the output side. Thus, the associated lighting unit is activated in accordance with a predetermined operating value, in particular a maximum value, of the lighting only when there is an object on the detector or group of detectors in question.
Bei der in Fig.4 und 5 veranschaulichte Prüfeinrichtung ist eine Ueberwachungsvorrichtung UVb mit einer Helligkeits-Detektoreinrichtung HDV vorgesehen, die mindestens einen Teil des Arbeitsraumes R oder der Prüfobjekt-Auflagefläche AF erfaßt. Die Ueberwachungsvorrichtung umfaßt ferner eine mit dem Ausgang der Helligkeits-Detektoreinrichtung HDV wirkverbundene Grenzwert-Istwert-Vergleichseinrichtung GIV, deren Ausgang mit der Leuchtvorrichtung LV in Steuerverbindung steht. Eine solche Ausführung hat den wesentlichen Vorteil, daß störendes Blendlicht im Arbeitsraum nicht nur mittelbar durch Ueberwachung der Abdeckung der Auflagefläche, sondern unmittelbar erfaßt wird. Auch hier hat die Prüfobjektaufnahme PA eine durchscheinende, optisch diffundierend wirkende Prüfobjekt-Auflagefläche AF, wobei die Helligkeits-Detektoreinrichtung HDV eine Mehrzahl von jeweils einem Teil TF der Prüfobjekt-Auflagefläche AF zugeordneten Helligkeitsdetektoren HD an sich üblicher Art aufweist. Jeder dieser Detektoren ist durch Ausrichtung und/oder Ausblendung einem Teil TF der Prüfobjekt-Auflagefläche AF zugeordnet ist. Durch Anordnung einer entsprechenden Anzahl von Detektoren kann die Flächenauflösung der Ueberwachung ohne großen Aufwand erhöht werden.In the test device illustrated in FIGS. 4 and 5, a monitoring device UVb is provided with a brightness detector device HDV, which detects at least a part of the working space R or the test object support surface AF. The monitoring device further comprises a limit value / actual value comparison device GIV which is operatively connected to the output of the brightness detector device HDV, the output of which is in control connection with the lighting device LV stands. Such an embodiment has the essential advantage that disturbing glare in the work area is detected not only indirectly by monitoring the cover of the support surface, but directly. Here, too, the test object receptacle PA has a translucent, optically diffusing test object support surface AF, the brightness detector device HDV having a plurality of brightness detectors HD assigned to a part TF of the test object support surface AF in a conventional manner. Each of these detectors is assigned to a part TF of the test object support surface AF by alignment and / or blanking. By arranging an appropriate number of detectors, the area resolution of the monitoring can be increased without great effort.
Im einzelnen umfaßt die Leuchtvorrichtung LV eine Mehrzahl von je für sich steuerbaren Leuchteinheiten LE, deren jede einem Helligkeitsdetektor HD oder einer Gruppe von Helligkeitsdetektoren zugeordnet ist. Der Ausgang eines jeden einer Leuchteinheit zugeordneten Helligkeitsdetektors bzw. die überlagerten oder gemittelten Ausgänge einer Gruppe solcher Helligkeitsdetektoren ist an einen Grenzwertvergleicher GV der Grenzwert-Istwert-Vergleichseinrichtung GIV angeschlossen. Die Grenzwertvergleicher GV stehen mit den zugeordneten Leuchteinheiten in einer die Intensität derselben auf einen vorgebbaren Maximalwert begrenzenden Steuerverbindung. Die hierfür benötigten Detailschaltungen und Schaltungselemente sind allgemein bekannt und bedürfen für den Fachmann keiner näheren Erläuterung.Specifically, the lighting device LV comprises a plurality of lighting units LE, each of which can be controlled individually, each of which is assigned to a brightness detector HD or a group of brightness detectors. The output of each brightness detector assigned to a lighting unit or the superimposed or averaged outputs of a group of such brightness detectors is connected to a limit value comparator GV of the limit value / actual value comparison device GIV. The limit value comparators GV and the associated lighting units are in a control connection which limits their intensity to a predeterminable maximum value. The detailed circuits and circuit elements required for this are generally known and require no further explanation for the person skilled in the art.
Mit der letztgenannten Ausführung läßt sich erreichen, daß bei Nichtabdeckung einer Leuchteinheit bzw. des zugeordneten Flächenbereichs der Auflagefläche sofort eine Helligkeitsbegrenzung der betreffenden Leuchteinheit eintritt und daher die Prüfarbeit ohne Unterbrechung weitergeführt werden kann, allerdings unter Ausschluß des damit ausgeblendeten Flächenbereichs. Dieser ist aber innerhalb der Auflagefläche leicht erkennbar und kann durch Verschieben des Prüfobjekts rasch wieder in die Prüfung einbezogen werden.With the last-mentioned embodiment, it can be achieved that if a lighting unit or the associated surface area of the support surface is not covered, the brightness of the lighting unit concerned immediately occurs and therefore the test work can be continued without interruption, but with the exclusion of the surface area that is hidden with it. However, this is easily recognizable within the contact area and can be quickly re-included in the test by moving the test object.
Wie in Fig.5 angedeutet, wird dabei für jeden Helligkeitsdetektor HD und damit für jede zugeordnete Teilfläche TF zweckmäßig innerhalb der Grenzwert-Istwert-Vergleichseinrichtung GIV an dem betreffenden Grenzwertvergleicher GV ein eigener, justierbarer Grenzwertgeber GG vorgesehen.As indicated in FIG. 5, a separate, adjustable limit indicator GG is expediently provided for each brightness detector HD and thus for each assigned partial area TF within the limit value / actual value comparison device GIV on the limit value comparator GV in question.
Insbesondere ist in diesem Zusammenhang Gegenstand einer besonderen Weiterbildung der Erfindung, unter Ausnutzung der ohnehin gegebenen Steuerungsmittel die abgeblendete Leuchteinheit und damit den zugehörigen Flächenbereich durch Aktivierung eines räumlich zugeordneten, optischen Signalgebers an sich üblicher Art zu kennzeichnen.In this context, in particular, the subject of a special development of the invention is to use the control means already given to identify the dimmed lighting unit and thus the associated surface area by activating a spatially assigned optical signal transmitter of a conventional type.
Claims (11)
- Visual testing device for objects of soft-flexible flat material, in particular textiles, garments, linen and the like, with the following features:
a) a working space (R) is provided with a translucent and optically diffusing active test-object receptacle, the rear side of which, being situated in opposition to a support surface (AF) stands in active optical connection with an illumination device (LV);
characterized by the following features:b) there is provided at least one monitoring device (UVa, UVb) which is under control dependent on the light irradiation of the illumination device (LV) into at least a part of the working space (R) and delivers at least one illumination control signal output;c) there is provided a light intensity-controlled illumination device (LV) which is in control connection with the output of the monitoring device (UVa, UVb) so as to diminish the light intensity within at least a part of the working space (R). - Testing device according to claim 1, characterized in that the test object receptacle shows a translucent and optically diffusing active test-object support surface (AF), and in that the monitoring device (UVa) comprises an object detector device actively connected with the working space (R) in the range of the test-object support surface (AF), responding to the presence of at least one test-object (O) and delivering an object-presence signal coordinated with the degree of coverage of the test-object support surface (AF) by the test-object (O).
- Testing device according to claim 2, characterized in that the object detector device shows a plurality of proximity detectors (24) each coordinated with a part (TF) of the test-object support surface (AF), responding to the presence of test-object material and delivering an object-presence signal coordinated with the degree of coverage of the coordinated part (TF) of the test-object support surface (AF) by test-object material.
- Testing device according to claim 3, characterized in that the object-presence signals of the proximity detectors (24) are combined by means of a logic circuit of a kind known per se into an illumination control signal so as to activate a predetermined operational value, in particular a maximum value, of the illumination only in case of object presence at all detectors.
- Testing device according to claim 3, characterized in that the illumination device (LV) shows a plurality of independently controllable illumination units (30, 32), each of which is coordinated with a proximity detector (24) or with a group of proximity detectors combined at their outputs in a logic conjunction so as to activate the coordinated illumination unit in accordance with a predetermined operational value, in particular a maximum value, of the illumination only in case of object presence at the corresponding detector or at the corresponding group of detectors.
- Testing device according to anyone of claims 3 to 5, characterized in that the object support surface (AF) shows a feeding side (20) and a delivery side (22), and in that at least one proximity detector (24) is positioned in the range each of the feeding side and the delivery side.
- Testing device according to anyone of the preceding claims, characterized in that the intensity of the illumination device or of illumination units contained therein is capable of being switched or regulated over between separately adjustable limit values for the operational testing condition and the operational quiescent condition.
- Testing device according to claim 1, characterized by the following features:a) the monitoring device (UVb) comprises an illumination detecting device (HDV) covering at least a part of the working space (R) or of the test-object support surface (AF);b) the monitoring device (UVb) further comprises a limit/actual value comparison device (GIV) being in active connection with the output of the illumination detecting device (HDV) and having its output in a control connection with the illumination device (LV).
- Testing device according to claim 8, characterized in that the test object receptacle (PA) shows a translucent and optically diffusing active test-object support surface (AF), and in that the illumination detecting device (HDV) shows a plurality of light intensity detectors (HD), each coordinated with a part (TF) of the test-object support surface (AF) by means of alignment and/or blanking out.
- Testing device according to claim 9, characterized by the following features:a) the illumination device (LV) comprises a plurality of independently controllable illumination units (LE), each of which is coordinated with a light intensity detector (HD) or with a group of light intensity detectors (HD);b) the output of each light intensity detector (HD) coordinated with an illumination unit or respectively, with the superimposed or averaged outputs of a group of such light intensity detectors (HD) are connected with a limit value comparator (GV) of the limit/actual value comparison device (GIV);c) the limit value comparators (GV) are in a control connection with the corresponding illumination units so as to limit the intensity thereof to a predeterminable maximum value.
- Testing device according to anyone of the preceding claims, characterized in that the object support surface (AF) is of rectangular shape, and in thet a plurality of illumination units is positioned in the range of the object support surface in a distribution along the longer and/or shorter rectangle side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4226998A DE4226998A1 (en) | 1992-08-14 | 1992-08-14 | Laundry tester |
| DE4226998 | 1992-08-14 | ||
| PCT/EP1993/002165 WO1994004743A1 (en) | 1992-08-14 | 1993-08-14 | Visual inspection device for objects made of soft, flexible, flat material, especially textiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0607418A1 EP0607418A1 (en) | 1994-07-27 |
| EP0607418B1 true EP0607418B1 (en) | 1997-05-02 |
Family
ID=6465597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93919059A Expired - Lifetime EP0607418B1 (en) | 1992-08-14 | 1993-08-14 | Visual inspection device for objects made of soft, flexible, flat material, especially textiles |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0607418B1 (en) |
| AT (1) | ATE152490T1 (en) |
| AU (1) | AU4947893A (en) |
| DE (2) | DE4226998A1 (en) |
| WO (1) | WO1994004743A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006031646B4 (en) * | 2005-12-08 | 2013-01-17 | YUSHO Co.,Ltd. | Method for detecting the inner quality of comforters |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655465A (en) * | 2019-01-04 | 2019-04-19 | 郝乐(上海)电子有限公司 | A kind of Intelligent lightening device for car surface inspection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1047743B (en) * | 1956-02-27 | 1958-12-31 | Dornier Gmbh Lindauer | Viewing device for running fabric webs |
| GB1187470A (en) * | 1967-12-15 | 1970-04-08 | Gainsborough Cornard Ltd | Improvements in Fabric Inspection Machines |
| DE2740433A1 (en) * | 1977-09-08 | 1979-03-22 | Monforts Fa A | Fabric inspection table - has solid slats over opening to light box, to adjust light box width to fabric |
-
1992
- 1992-08-14 DE DE4226998A patent/DE4226998A1/en not_active Withdrawn
-
1993
- 1993-08-14 WO PCT/EP1993/002165 patent/WO1994004743A1/en active IP Right Grant
- 1993-08-14 AU AU49478/93A patent/AU4947893A/en not_active Abandoned
- 1993-08-14 AT AT93919059T patent/ATE152490T1/en active
- 1993-08-14 DE DE59306334T patent/DE59306334D1/en not_active Expired - Fee Related
- 1993-08-14 EP EP93919059A patent/EP0607418B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006031646B4 (en) * | 2005-12-08 | 2013-01-17 | YUSHO Co.,Ltd. | Method for detecting the inner quality of comforters |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4226998A1 (en) | 1994-03-10 |
| AU4947893A (en) | 1994-03-15 |
| EP0607418A1 (en) | 1994-07-27 |
| DE59306334D1 (en) | 1997-06-05 |
| WO1994004743A1 (en) | 1994-03-03 |
| ATE152490T1 (en) | 1997-05-15 |
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