DE20320752U1 - Empty bottle or container inspection device for detecting residual cleaning liquid in the container has a high frequency electromagnetic radiation transmitter and a homodyne receiver - Google Patents
Empty bottle or container inspection device for detecting residual cleaning liquid in the container has a high frequency electromagnetic radiation transmitter and a homodyne receiver Download PDFInfo
- Publication number
- DE20320752U1 DE20320752U1 DE20320752U DE20320752U DE20320752U1 DE 20320752 U1 DE20320752 U1 DE 20320752U1 DE 20320752 U DE20320752 U DE 20320752U DE 20320752 U DE20320752 U DE 20320752U DE 20320752 U1 DE20320752 U1 DE 20320752U1
- Authority
- DE
- Germany
- Prior art keywords
- container
- transmitter
- electromagnetic radiation
- high frequency
- recipient
- 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.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Erkennen von Flüssigkeit in einem Behälter sowie einen Leerbehälterinspektor.The The invention relates to a device for detecting liquid in a container as well as an empty container inspector.
Beim Abfüllen von Flüssigkeiten in Behälter werden die Behälter, die beispielsweise Flaschen sein können, vor dem Abfüllen gereinigt. Hierzu wird eine Reinigungsflüssigkeit, beispielsweise eine Reinigungslauge, eingesetzt. Dabei ist sicherzustellen, dass nach dem Reinigen und vor dem Abfüllen keine Reinigungsflüssigkeit mehr in dem Behälter vorhanden ist.At the bottling of liquids to be in a container the containers, which may be bottles, for example, cleaned before filling. For this purpose, a cleaning liquid, For example, a cleaning solution used. It must be ensured that no cleaning fluid after cleaning and before filling more in the container is available.
Hierzu
ist beispielsweise aus der
Weiterhin
ist aus der
Hierbei hat sich als nachteilig erwiesen, dass die Mikrowellenbauteile im Einsatz, der Fertigung und die Frequenzfreigabe in verschiedenen Ländern betreffend problematisch sind.in this connection has proved to be disadvantageous that the microwave components in Use, manufacturing and frequency sharing in different Countries are problematic.
Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung zum Erkennen von Flüssigkeit sowie einen Leerbehälterinspektor zu schaffen, die/der kostengünstig ist, wenig Raumbedarf hat und zuverlässig arbeitet.task It is therefore an object of the present invention to provide a device for detecting of liquid as well as an empty container inspector to create the most cost-effective is, has little space requirements and works reliably.
Die Aufgabe wird mit einer Vorrichtung nach Anspruch 1 einem Leerbehälterinspektor nach Anspruch 6 gelöst.The The object is with a device according to claim 1 an empty container inspector solved according to claim 6.
Beim Einsatz eines Empfängers nach dem Homodynkonzept wird das empfangene Signal mit einem frequenzgleichen Signal (Lokaloszillator) gemischt. Die Mischprodukte werden einem Tiefpassfilter zugeführt und anschließend verstärkt. Die interessierende resultierende Frequenz beträgt nur wenige Hertz und wird zeitlich moduliert durch den Flaschendurchsatz. Gemessen wird die Laufzeitverzögerung der unterschiedlichen Dielektrizitätskonstanten bezüglich der Wellenlänge λ. Die so gewonnene reine DC-Komponente ist ein Maß für das detektierte Medium.At the Use of a receiver according to the homodyne concept, the received signal will be of the same frequency Signal (local oscillator) mixed. The mixed products become one Low pass filter supplied and subsequently strengthened. The resulting frequency of interest is only a few hertz and will time modulated by the bottle throughput. Measured is the Delay of the different dielectric constants in terms of the wavelength λ. The way recovered pure DC component is a measure of the detected medium.
Hierbei ist es wichtig, dass die Frequenzen der beiden zu mischenden Signale identisch sind, was am einfachsten dadurch erreicht werden kann, dass nur ein Oszillator Verwendung findet, der die Frequenz für den Sender und die Frequenz für den Empfänger zum Mischen vorgibt. Dazu ist vorzugsweise ein Koaxialkabel zwischen Sender und Empfänger vorgesehen, mit dem das Oszillationssignal vom Sender zum Empfänger übertragen wird.in this connection It is important that the frequencies of the two signals to be mixed are identical, which is most easily achieved by Only one oscillator is used, which determines the frequency for the transmitter and the frequency for the recipient pretends to mix. For this purpose, preferably a coaxial cable between Sender and receiver provided with the transmit the oscillation signal from the transmitter to the receiver becomes.
Eine kompakte Ausführungsform ergibt sich hierbei dadurch, dass das Kabel, das zur Übertragung des Oszillationssignals vorgesehen ist, auch zur Übertragung einer Gleichspannung vorgesehen ist, mit der der Sender vom Empfänger mit Energie versorgen wird.A compact embodiment This is due to the fact that the cable used for transmission the oscillation signal is provided, also for transmission a DC voltage is provided, with which the transmitter from the receiver with Supply energy.
Eine solche Vorrichtung zum Erkennen von Flüssigkeit, die einen Sender und einen homodynen Empfänger umfasst, kann Bestandteil eines Leerbehälterinspektors sein, der neben der Inspektion mit dem Sender und dem homodynen Empfänger auch andere Inspektionsschritte, wie beispielsweise eine optische Inspektion mit einer Kamera, durchführen kann.A Such device for detecting liquid, which is a transmitter and a homodyne receiver may be part of an empty container inspector who is next to the inspection with the transmitter and the homodyne receiver also others Inspection steps, such as an optical inspection with a camera, can perform.
Bevorzugte Ausführungsformen der erfindungsgemäßen Vorrichtung und der erfindungsgemäßen Verfahren werden anhand der Figuren erläutert. Dabei zeigt:preferred embodiments the device according to the invention and the method of the invention will be explained with reference to the figures. Showing:
In
Der
Sender
Der
Sender
Die
Frequenz des Senders
Der
Sender
Unter
(oder alternativ auch über)
dem Transportband
In
Während in
Soll
anstelle von Restflüssigkeit
am Boden des Behälters
Der
Empfänger
Eine
Ausgestaltung eines Verfahrens zum Erkennen von Flüssigkeit
in einem Behälter
wird anhand der
Auf
einem Förderband
In
der Regel bietet es sich an, dass erhaltene Signal zu diskriminieren
und so einen Schwellwert festzulegen, um leere Behälter
Die
gewonnene Information über
das Vorhandensein von Restflüssigkeit
in einem Behälter
Der
Sender
Bei
der in
In
Auf
einem Transportband werden somit nur Behälter
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20320752U DE20320752U1 (en) | 2003-08-05 | 2003-08-05 | Empty bottle or container inspection device for detecting residual cleaning liquid in the container has a high frequency electromagnetic radiation transmitter and a homodyne receiver |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10335777 | 2003-08-05 | ||
| DE20320752U DE20320752U1 (en) | 2003-08-05 | 2003-08-05 | Empty bottle or container inspection device for detecting residual cleaning liquid in the container has a high frequency electromagnetic radiation transmitter and a homodyne receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20320752U1 true DE20320752U1 (en) | 2005-02-24 |
Family
ID=34227496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20320752U Expired - Lifetime DE20320752U1 (en) | 2003-08-05 | 2003-08-05 | Empty bottle or container inspection device for detecting residual cleaning liquid in the container has a high frequency electromagnetic radiation transmitter and a homodyne receiver |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20320752U1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060960A1 (en) * | 2008-12-06 | 2010-06-10 | Boehringer Ingelheim Pharma Gmbh & Co. Kg | Optical level measurement |
| DE102010000034A1 (en) * | 2010-01-11 | 2011-07-14 | Universität Bayreuth, 95447 | Liquid level determination device for racking plant used for racking of liquid in container e.g. blood reservoir, has evaluation unit for deriving level of liquid in bottle based on emitted and detected microwave radiation |
| DE102016120231A1 (en) * | 2016-10-24 | 2018-04-26 | Endress + Hauser Flowtec Ag | Level gauge for small vessels |
-
2003
- 2003-08-05 DE DE20320752U patent/DE20320752U1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060960A1 (en) * | 2008-12-06 | 2010-06-10 | Boehringer Ingelheim Pharma Gmbh & Co. Kg | Optical level measurement |
| DE102010000034A1 (en) * | 2010-01-11 | 2011-07-14 | Universität Bayreuth, 95447 | Liquid level determination device for racking plant used for racking of liquid in container e.g. blood reservoir, has evaluation unit for deriving level of liquid in bottle based on emitted and detected microwave radiation |
| DE102016120231A1 (en) * | 2016-10-24 | 2018-04-26 | Endress + Hauser Flowtec Ag | Level gauge for small vessels |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20050331 |
|
| R150 | Term of protection extended to 6 years |
Effective date: 20060810 |
|
| R151 | Term of protection extended to 8 years |
Effective date: 20090910 |
|
| R158 | Lapse of ip right after 8 years |
Effective date: 20120301 |