WO2013102580A1 - Füllstandsgeber - Google Patents
Füllstandsgeber Download PDFInfo
- Publication number
- WO2013102580A1 WO2013102580A1 PCT/EP2012/076513 EP2012076513W WO2013102580A1 WO 2013102580 A1 WO2013102580 A1 WO 2013102580A1 EP 2012076513 W EP2012076513 W EP 2012076513W WO 2013102580 A1 WO2013102580 A1 WO 2013102580A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reflector
- level sensor
- guide tube
- sound guide
- ultrasound
- 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.)
- Ceased
Links
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
- G01F23/296—Acoustic waves
-
- 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
- G01F23/296—Acoustic waves
- G01F23/2962—Measuring transit time of reflected waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
Definitions
- Level sensor The invention relates to a level sensor with a
- Sound guide tube and a level sensor with an ultrasonic transceiver and a sensor electronics.
- Such level sensors with an ultrasonic transceiver which generates and emits ultrasonic waves and receives reflected ultrasonic waves are used, for example, to measure levels in fuel tanks of motor vehicles and are therefore known.
- the problem with the level determination by means of ultrasound on the one hand, the variable measurement signal alone due to changing measurement conditions such as temperature or the measuring medium.
- the Refe rence ⁇ measuring section is thus arranged separately Toggle with the reference reflector in the vicinity of the actual measuring range for the filling level and whereby additional space is required.
- an ultrasonic transceiver has a principle dead zone, which lies directly in front of the transceiver, in which no reliable measurement is possible.
- This Totux arises because of the emitted sonic pulse generates a conscience ses Reverberation in the transceiver, which must be learnge ⁇ starting subsided before an echo signal can be clean detek- advantage.
- the invention is therefore an object of the invention to provide a filling state encoder, which is changing both in itself Operating conditions reliably works, compensating for principle-based shortcomings and is simple and platzspa ⁇ rend constructed.
- the object is achieved in that the sound guide tube has two spaced-apart reflectors, wherein the first reflector for deflecting the ultrasound in the direction of the second reflector and the second reflector for deflecting the ultrasound in the direction of the liquid surface is formed, and that in the second reflector, a third reflector is arranged, which reflects the ultrasound in the direction of the first reflector.
- the reference ⁇ measuring section is integrated into the actual measuring section for the level, whereby space is saved.
- the reference measuring distance can be adjusted by the choice of the distance between the first and second reflector as needed. This is advantageous in that, for longer reference distances, the relative error in the reference determination due to manufacturing tolerances and the finite time resolution of the transceiver is smaller than with shorter reference distances, which is important insofar as the determined level always at least the same relative error has the reference measuring section.
- the second reflector is arranged relatively close to the bottom of the fuel tank can be, so that even very low levels are measurable. At the same time an influence of the minimum measurable level is excluded by the principle-based dead-end ⁇ sen, as a result of the double deflection of the second reflector is arranged only after this dead zone.
- the first and the second reflector are arranged such that they deflect the ultrasound by 90 ° in each case. Particularly low levels can be measured if the measuring distance between these two reflectors is approximately parallel to the bottom of the fuel tank. But there are also deviating beam paths conceivable, in particular in adaptation to the container shape or vessel installations.
- the reflectors are particularly easy to manufacture and assemble when the first and the second reflector are each formed by a wall of the beam guide tube. If the sound guide tube extends only to the second reflector, you get a particularly space-saving level sensor.
- the third reflector has an area which is less than 40%, preferably 20% to 5%, of the area of the second reflector.
- the third reflector is connected as a separate component with the second reflector. This training allows the separate production of the measuring reflector.
- the third reflector is avoided if this is formed integrally with the second reflector.
- a separate arrangement of the beam guide tube in the fuel ⁇ container is avoided when the beam guide tube forms a structural unit with the level sensor.
- the advantage be ⁇ is that the unit can be pre-assembled and tested before it is installed in the fuel tank.
- the reliable filling of the beam guiding tube with fuel is ensured if the beam guiding tube has at least one opening in its lateral walls, preferably in the lower region.
- the invention is tert erläu ⁇ tert. 1 shows a filling level sensor according to the invention in section and
- Fig. 2 is a perspective view of the beam guide ⁇ tube.
- a level sensor 3 is arranged in the fuel tank 1 in Fig. 1 at the bottom 2, a level sensor 3 is arranged.
- the level sensor 3 consists of a level sensor 4 with a housing 5.
- the housing 5 be ⁇ is made of a metal lid 6 which is soldered to a used as a printed circuit board ceramic substrate 7, so that the ceramic substrate 7 forms the bottom of the housing 1.
- an ultrasonic transceiver 8 and a sensor electronics 9 for evaluating the signals and providing an electrical signal corresponding to the level for forwarding to a display device for the level are arranged.
- the sound guide tube 10 On the ceramic substrate 7, a sound guide tube 10 is attached.
- the sound guide tube 10 has a side wall 11, which forms a first reflector 12.
- the first reflector Tor 12 deflects the emitted by the transceiver 8 ultrasound by 90 °, so that it now propagates parallel to the bottom 2 of the fuel tank 1.
- the ultrasonic waves are represented by individual lines a, b, c.
- Another side wall 13 of the sound guide tube 10 constitutes a second Re ⁇ Flektor 14 which deflects the ultrasound by 90 ° in the direction to the liquid surface.
- the side wall In the middle in the second reflector 14, the side wall has an expression 15, which forms a third reflector 16 acting as a measuring reflector ⁇ tor.
- the area of the third reflector 16 is only 5% of the area of the second reflector 14.
- the third reflector is designed such that it reflects incident ultrasonic waves (line c) in the opposite direction to the first reflector 12 so that they reflect again be routed to the transceiver 8.
- the distance from the transceiver 8 to the third reflector 16 thus forms the reference measuring path.
- Fig. 2 shows the sound guide tube 10 of the level sensor 3.
- the sound guide tube 10 is formed by four side walls, with two side walls 11, 13 are the reflectors.
- Egg ⁇ ne opening 17 allows at the top in the area of the second reflector 14 has an unhindered passage of the ultrasonic waves in the direction ⁇ liquid surface.
- a similar opening is also arranged on the first reflector 12.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/370,150 US9719833B2 (en) | 2012-01-05 | 2012-12-20 | Referential ultrasonic transceiver for acoustic measurement of a fluid level |
| KR1020147018111A KR20140111660A (ko) | 2012-01-05 | 2012-12-20 | 충전 레벨 트랜스미터 |
| EP12812251.2A EP2800953A1 (de) | 2012-01-05 | 2012-12-20 | Füllstandsgeber |
| CN201280066000.0A CN104040304B (zh) | 2012-01-05 | 2012-12-20 | 液位探测器 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012200122.0 | 2012-01-05 | ||
| DE102012200122 | 2012-01-05 | ||
| DE102012205640.8 | 2012-04-05 | ||
| DE102012205640.8A DE102012205640B4 (de) | 2012-01-05 | 2012-04-05 | Füllstandsgeber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013102580A1 true WO2013102580A1 (de) | 2013-07-11 |
Family
ID=48652682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/076513 Ceased WO2013102580A1 (de) | 2012-01-05 | 2012-12-20 | Füllstandsgeber |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9719833B2 (de) |
| EP (1) | EP2800953A1 (de) |
| KR (1) | KR20140111660A (de) |
| CN (1) | CN104040304B (de) |
| DE (1) | DE102012205640B4 (de) |
| WO (1) | WO2013102580A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012200757B4 (de) * | 2012-01-05 | 2022-01-05 | Vitesco Technologies GmbH | Füllstandsgeber |
| DE102013108158A1 (de) * | 2013-07-30 | 2015-02-19 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zur Herstellung eines Tanks mit einem kalibrierten Sensor |
| DE102013219635B4 (de) * | 2013-09-27 | 2022-04-14 | Vitesco Technologies GmbH | Einrichtung zur Einführung einer gefrierfähigen Flüssigkeit in das Abgassystem eines Kraftfahrzeuges |
| DE102013219643A1 (de) * | 2013-09-27 | 2015-04-02 | Continental Automotive Gmbh | Ultraschallsensor |
| DE102014210077A1 (de) * | 2014-05-27 | 2015-12-03 | Continental Automotive Gmbh | Vorrichtung und Verfahren zum Bestimmen einer Höhe einer Fluidoberfläche in einem Fluidbehälter |
| DE102014210080A1 (de) | 2014-05-27 | 2015-12-03 | Continental Automotive Gmbh | Vorrichtung zum Bestimmen einer Höhe einer Fluidoberfläche in einem Fluidbehälter |
| DE102015008992A1 (de) * | 2015-07-15 | 2017-01-19 | Hella Kgaa Hueck & Co. | Mediensensor mit mindestens einem Ultraschallwandler |
| DE102018218947A1 (de) * | 2018-11-07 | 2020-05-07 | Robert Bosch Gmbh | Vorrichtung zur Qualitätsbestimmung einer Flüssigkeit, Tankvorrichtung |
| CN111504419B (zh) * | 2020-06-04 | 2021-05-11 | 浙江大学 | 一种测定植保无人机药液量的装置和方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226320A (en) * | 1989-08-22 | 1993-07-13 | Siemens Aktiengesellschaft | Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide |
| US20040007061A1 (en) * | 2002-07-12 | 2004-01-15 | Forgue John R. | Fluid level sensor |
| JP2004294073A (ja) * | 2003-03-25 | 2004-10-21 | Denso Corp | 車両用液面検出装置 |
| WO2008101339A1 (en) * | 2007-02-21 | 2008-08-28 | Sensotech Inc. | Fluid level measuring method and system therefor |
| US20090038394A1 (en) * | 2006-04-12 | 2009-02-12 | Immuneregen Biosciences,Inc. | Apparatus for Measuring the Filling Level of a Liquid in a Container |
| WO2009074428A1 (de) * | 2007-12-12 | 2009-06-18 | Robert Bosch Gmbh | Vorrichtung zur messung eines füllstandes einer flüssigkeit in einem behälter |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB997481A (en) | 1961-03-07 | 1965-07-07 | Burnett And Rolfe Ltd | Improvements relating to arrangements for use in measuring the liquid content of a container |
| DE3706453A1 (de) | 1987-02-27 | 1988-09-08 | Bayerische Motoren Werke Ag | Fuellstandsgeber fuer kraftfahrzeuge |
| US4862748A (en) | 1988-07-20 | 1989-09-05 | The Boeing Company | Multiple ultrasonic transducer with remote selector |
| SU1721444A1 (ru) * | 1989-08-07 | 1992-03-23 | А.К.Бровцын, М.С.Гаджиев, А.Г.Акимов и И.А.Филатов | Ультразвуковое устройство дл измерени уровн жидкостей |
| US5437194A (en) | 1991-03-18 | 1995-08-01 | Panametrics, Inc. | Ultrasonic transducer system with temporal crosstalk isolation |
| DE4336370C1 (de) * | 1993-10-25 | 1995-02-02 | Siemens Ag | Vorrichtung zur Durchflußmessung |
| US5471872A (en) | 1994-01-07 | 1995-12-05 | Semitool, Inc. | Acoustic liquid level measuring apparatus |
| JPH11153471A (ja) | 1997-11-18 | 1999-06-08 | Nippon Soken Inc | 音波による液体情報測定装置 |
| WO1999032858A1 (en) * | 1997-12-23 | 1999-07-01 | Simmonds Precision Products, Inc. | Ultrasonic liquid gauging system |
| JP3849671B2 (ja) | 2003-05-20 | 2006-11-22 | 株式会社デンソー | 車両用液面検出装置 |
| US7117738B2 (en) * | 2003-10-02 | 2006-10-10 | Denso Corporation | Liquid level detecting apparatus |
| KR100722687B1 (ko) * | 2006-05-09 | 2007-05-30 | 주식회사 비에스이 | 부가적인 백 챔버를 갖는 지향성 실리콘 콘덴서 마이크로폰 |
| JP2009034992A (ja) * | 2007-07-10 | 2009-02-19 | Seiko Epson Corp | 液体検出装置及び液体収容容器 |
| CN104883983B (zh) * | 2012-10-12 | 2018-06-29 | 玛芬股份有限公司 | 具有微小型电机的机械扫描超声换能器 |
-
2012
- 2012-04-05 DE DE102012205640.8A patent/DE102012205640B4/de not_active Expired - Fee Related
- 2012-12-20 US US14/370,150 patent/US9719833B2/en not_active Expired - Fee Related
- 2012-12-20 WO PCT/EP2012/076513 patent/WO2013102580A1/de not_active Ceased
- 2012-12-20 KR KR1020147018111A patent/KR20140111660A/ko not_active Abandoned
- 2012-12-20 CN CN201280066000.0A patent/CN104040304B/zh not_active Expired - Fee Related
- 2012-12-20 EP EP12812251.2A patent/EP2800953A1/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226320A (en) * | 1989-08-22 | 1993-07-13 | Siemens Aktiengesellschaft | Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide |
| US20040007061A1 (en) * | 2002-07-12 | 2004-01-15 | Forgue John R. | Fluid level sensor |
| JP2004294073A (ja) * | 2003-03-25 | 2004-10-21 | Denso Corp | 車両用液面検出装置 |
| US20090038394A1 (en) * | 2006-04-12 | 2009-02-12 | Immuneregen Biosciences,Inc. | Apparatus for Measuring the Filling Level of a Liquid in a Container |
| WO2008101339A1 (en) * | 2007-02-21 | 2008-08-28 | Sensotech Inc. | Fluid level measuring method and system therefor |
| WO2009074428A1 (de) * | 2007-12-12 | 2009-06-18 | Robert Bosch Gmbh | Vorrichtung zur messung eines füllstandes einer flüssigkeit in einem behälter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140111660A (ko) | 2014-09-19 |
| DE102012205640A1 (de) | 2013-07-11 |
| CN104040304A (zh) | 2014-09-10 |
| DE102012205640B4 (de) | 2018-05-30 |
| CN104040304B (zh) | 2016-09-21 |
| EP2800953A1 (de) | 2014-11-12 |
| US20140345377A1 (en) | 2014-11-27 |
| US9719833B2 (en) | 2017-08-01 |
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