WO2013117297A1 - Système permettant de surveiller un niveau de liquide - Google Patents

Système permettant de surveiller un niveau de liquide Download PDF

Info

Publication number
WO2013117297A1
WO2013117297A1 PCT/EP2013/000182 EP2013000182W WO2013117297A1 WO 2013117297 A1 WO2013117297 A1 WO 2013117297A1 EP 2013000182 W EP2013000182 W EP 2013000182W WO 2013117297 A1 WO2013117297 A1 WO 2013117297A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
energy
movement
floating body
liquid level
Prior art date
Application number
PCT/EP2013/000182
Other languages
German (de)
English (en)
Inventor
Georg Bonn
Original Assignee
Bonnel Technologie Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bonnel Technologie Gmbh filed Critical Bonnel Technologie Gmbh
Publication of WO2013117297A1 publication Critical patent/WO2013117297A1/fr

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
    • G01F23/30—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 floats
    • G01F23/76—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 floats characterised by the construction of the float
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/061—Indicating or recording devices for remote indication
    • 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
    • G01F23/30—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 floats
    • G01F23/32—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 floats using rotatable arms or other pivotable transmission elements
    • G01F23/34—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 floats using rotatable arms or other pivotable transmission elements using mechanically actuated indicating means
    • 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
    • G01F23/30—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 floats
    • G01F23/32—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 floats using rotatable arms or other pivotable transmission elements
    • G01F23/36—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 floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means
    • 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
    • G01F23/30—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 floats
    • G01F23/32—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 floats using rotatable arms or other pivotable transmission elements
    • G01F23/36—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 floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means
    • G01F23/363—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 floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means using electromechanically actuated indicating means
    • 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
    • G01F23/30—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 floats
    • G01F23/64—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 floats of the free float type without mechanical transmission elements
    • G01F23/68—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 floats of the free float type without mechanical transmission elements using electrically actuated indicating means
    • G01F23/70—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 floats of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points

Definitions

  • the invention relates to a device for monitoring a fluid level, preferably for monitoring a fluid level
  • Liquid levels in a container which may be, for example, a tank, a barrel or the like, or may be a structure such as a cistern, a pit or the like.
  • the switching signal is transmitted via a wired connection to a receiver, which is usually located outside the container.
  • the receiver of the switching signal may be any type of the switching signal.
  • the switching signal thus serves as an input signal for a subsequent signal processing and / or as an immediate control signal for operating a device.
  • An object of the present invention is to provide a
  • Fluid levels includes a float, a switch disposed in the float, which is used to issue a
  • Switching signal is formed depending on the level of the liquid, and a radio transmitter for wireless
  • Floating body arranged receiver.
  • a basic idea of the invention is to dispense with the use of a connecting line between the switch on the one hand and the receiver of the switching signal on the other hand. A mechanical load on the connecting line by changing liquid levels is therefore from the outset
  • the invention proposes to transmit the switching signal wirelessly with the aid of a radio transmitter arranged in the floating body. As a result, a particularly high reliability in the signal transmission is ensured.
  • the monitoring device can be operated without repair or replacement of the connecting line over a long period of time.
  • the radio transmitter used is preferably designed to form a short-range radio link, for example with a range of 50 meters inside buildings. Since usually only a single switching signal must be transmitted, the duration of the radio operation is also very short. The transmission energy required for the emission of the radio signal for short-term transmission operation radio signal is therefore very low.
  • Switching signals is generally known to the person skilled in the art.
  • To operate the radio transmitter is usually a
  • Monitoring device incompatible. As an alternative, therefore, offers the use of batteries for power supply. In particular, in such applications in which the monitoring device according to the invention with particular
  • Radio transmitter supplied with electrical energy derived from the movement of the float.
  • the power supply device comprises for this purpose an energy converter, preferably an electromechanical converter, for converting kinetic energy of
  • Radio transmitter is connected, or the energy obtained is stored in a purpose intended for this purpose buffer.
  • the cache is
  • capacitors are used.
  • Another way of storing energy is to use a rechargeable battery of suitable technology, for example one
  • the radio transmitter used can be used together with the optional buffer and the energy converter or parts of the
  • Energy converter and the switch or parts of the switch be designed as a compact unit that can be combined in the manner of a module with different floats. To compact design contributes that the
  • Transmitting antenna is preferably included as an integral component in the radio transmitter.
  • the float which is used directly or indirectly for the production of electrical energy, it may, depending on the design of the monitoring device and in particular depending on the design of the used floating body to an up and down movement of the
  • Floats act as they are due to a change in the
  • Fluid levels is caused. Instead of this substantially vertical movement or in addition to this, it can also be in the used movement of the float to a reciprocating motion, so a substantially horizontal movement of the float at a constant level of liquid act, for example, caused by currents or the like.
  • the energy supply device used can use energy converters of different types. Particularly advantageous is, for example, the use of a
  • Linear generator which converts a linear kinetic energy into electrical energy.
  • This type of energy converter can be structurally particularly simple and therefore inexpensive to manufacture.
  • an embodiment has proved to be particularly advantageous in which a permanent magnet moving due to a movement of the floating body is provided, which moves relative to an electrical coil.
  • Such an electrodynamic converter is for
  • a piezoelectric transducer can be used, the piezoelectric element for generating an electrical voltage from a functional body with a mechanical force
  • Piezo elements can be piezocrystals as well as piezoelectric ceramics
  • the functional body acting on the piezoelectric element, as well as the magnet serving as a functional body in an electrodynamic converter is preferably one in which
  • Floating body arranged to move during a movement of Floating body moving functional body, which is preferably a defined movement
  • Vibration converter for the use of vibrations Vibration converter for the use of vibrations
  • rotary converter As part of the rotary converter can be used, for example, a ball-bearing rotor, as he used to operate the automatic Aufziehmechanismus a mechanical
  • Wristwatch is used.
  • a short voltage pulse can be generated by electromagnetic induction
  • Power supply of the radio transmitter is used.
  • a structurally particularly simple thus very robust and less prone to error and at the same time inexpensive to produce monitoring device of the switch is designed as a mechanically actuated switch. This is preferably a microswitch.
  • this may be Normally closed switch or normally-open switch, or alternatively, toggle switch with NC and NO contact.
  • the float is preferably by means of a holding element, for example in the form of a flexible or rigid holding rod, at a mostly stationary breakpoint, for example on a wall of the
  • Liquid container fixed so that a change in the liquid level, a change in the inclination of the
  • the retaining element is
  • the floating body in a manner floating on the liquid is freely movable, that he expected all
  • the switch can be actuated in this case by the movement of a functional body, wherein the functional body is preferably arranged in the interior of the floating body and is in operative connection with the floating body.
  • the functional body either indirectly or directly to a movement of the float, in particular a
  • Position or position change of the float reacts with a corresponding movement.
  • the movement of the functional body is analogous to the movement of the body
  • the switch is triggered indirectly by a movement of the float, namely by a by the movement of the float
  • the float can actuate the switch via a linkage or else the floating body is provided with a permanent magnet whose magnetic field actuates a reed contact arranged on the retaining element.
  • the functional body actuating the switch is at the same time that functional body whose kinetic energy is converted by an energy converter into electrical energy for supplying the radio transmitter.
  • the energy for operating the radio transmitter is in other words from the
  • the switch may have a piezo element such that a ball serving as a functional body running on a defined path of movement changes when the inclination of the ball is changed
  • the piezoelectric transducer is preferably designed such that already a single operation of the
  • Piezo elements so here, for example, a single
  • the present invention is not limited to the use of a ball actuated microswitch.
  • Switch whose operation is due to a mechanical movement of a functional body, such as a ball, takes place, the movement is related or caused by a change of
  • Energy supply device for supplying the radio transmitter with electrical energy derived from the movement of the floating body and the problem-free
  • switches for outputting a switching signal. These switches are preferably with an electrical or electronic
  • Sensor for monitoring the fluid level combined and can form a structural unit with this and the radio transmitter.
  • Detect fluid levels may be a miniaturized position sensor or acceleration sensor, as used in smartphones to detect the orientation of the device.
  • sensors are often equipped with piezoelectric sensor elements or constructed as MEMS (micro-electro-mechanical system). Since parts of such a sensor can serve as electrokinematical energy converters, a combination with the energy supply device according to the invention can also be provided in this case be. In other words, the energy supply of the
  • the invention is exemplary of a monitoring device for the
  • Container described a sewage treatment plant. However, this does not limit the invention. As already indicated above, the invention can also be used for monitoring the liquid level in different containers or applications. In the description below:
  • FIG. 1 shows a container with a liquid and a
  • Fig. 2 different positions of a floating body, a device for monitoring a
  • a monitoring device 3 for monitoring the level 4 of the liquid 1 is arranged, see Fig. 1.
  • the monitoring device 3 comprises a float 5 for placement on the liquid 1, one arranged in the float 5 Switch 6, which is used to output a switching signal as a function of the level 4 of the liquid.
  • the floating body 5 is using a
  • Retaining element in the form of a flexible, rotatably mounted holding rod 9 attached to a stationary holding point 10 on a wall 11 of the liquid container 2, so that a
  • the switch 6 is designed as a changeover switch with a normally closed and a normally open microswitch, the (not shown) via a lever system as a
  • Function body serving ball 12 is actuated.
  • Liquid level lb the ball 12 changes its position on a predetermined trajectory and actuates the switch 6. This is just one of many possibilities of implementing a switch, as it can be used with the present invention.
  • One arranged in the float 5 is just one of many possibilities of implementing a switch, as it can be used with the present invention.
  • One arranged in the float 5 is just one of many possibilities of implementing a switch, as it can be used with the present invention.
  • Power supply device 13 includes a
  • electromechanical transducer 14 for converting kinetic energy of the float 5 into electrical energy for
  • the energy obtained in this way is stored in a buffer 15, which is electrically connected to the energy converter 14 and the
  • the energy converter 14 is designed as a linear generator and comprises, as in FIG. 4
  • a cylindrical permanent magnet 16 which is suspended in a hollow cylindrical guide 17 between the spring elements 18 on the walls of the floating body 5 and can swing in this guide 17 to its rest position.
  • a cylindrical coil 19 Around the guide 17 around a cylindrical coil 19 is arranged.
  • the energy converter 14 is a piezoelectric transducer
  • the piezoelectric element is integrated in such a way in the switch 6 that the
  • Energy converter 14 is. In other words, the energy to operate the radio transmitter 7 from the switching event obtained the same.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

L'invention concerne un dispositif permettant de surveiller un niveau de liquide. L'objectif de l'invention est d'obtenir un dispositif de surveillance de niveau de liquide permettant une génération particulièrement fiable du signal de commutation à long terme. A cette fin, le dispositif de surveillance (3) d'un niveau de liquide (4) selon l'invention comporte un corps flottant (5) dans lequel est agencé un commutateur (6) conçu pour émettre un signal de commutation en fonction du niveau (4) du liquide (1). Le dispositif de surveillance (3) est caractérisé en ce qu'un émetteur radio (7) permet de transmettre sans fil le signal de commutation à un récepteur (8) situé à l'extérieur du corps flottant (5).
PCT/EP2013/000182 2012-02-06 2013-01-22 Système permettant de surveiller un niveau de liquide WO2013117297A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012002115.1 2012-02-06
DE201210002115 DE102012002115A1 (de) 2012-02-06 2012-02-06 Einrichtung zum Überwachen eines Flüssigkeitsniveaus

Publications (1)

Publication Number Publication Date
WO2013117297A1 true WO2013117297A1 (fr) 2013-08-15

Family

ID=47681829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/000182 WO2013117297A1 (fr) 2012-02-06 2013-01-22 Système permettant de surveiller un niveau de liquide

Country Status (2)

Country Link
DE (1) DE102012002115A1 (fr)
WO (1) WO2013117297A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016212264B4 (de) * 2016-07-05 2024-08-22 Vega Grieshaber Kg Füllstandsensor und Füllstanderfassungsanordnung
IT202100028535A1 (it) * 2021-11-10 2023-05-10 Enrico Raddi Dispositivo di rilevazione di almeno un livello di un fluido di un serbatoio

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767775A (en) * 1994-02-25 1998-06-16 Shukla; Ashok K. Unanchored sensor and level sensor
WO2009110784A1 (fr) * 2008-03-05 2009-09-11 Lely Patent N.V. Dispositif de mesure destiné à être disposé dans un réservoir de lait, agencement de mesure comprenant un dispositif de mesure et procédé de surveillance d'un réservoir de lait et/ou d'une quantité de lait présente dans le réservoir de lait
GB2476820A (en) * 2010-01-11 2011-07-13 Ying Yeeh Entpr Co Ltd Drinking water level alarm lamp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6057773A (en) * 1994-02-25 2000-05-02 Shukla; Ashok K. Unanchored sensor for fluid characteristics
DE29807067U1 (de) * 1998-04-21 1998-10-08 Schmid, Herbert, 78253 Eigeltingen Vorrichtung zum Bestimmen der Füllhöhe eines Behälters
DE10315765C5 (de) * 2003-04-07 2021-03-11 Enocean Gmbh Verwendung eines elektromagnetischen Energiewandlers
US20100215511A1 (en) * 2009-02-26 2010-08-26 Theodore Eller Level Sensor System
DE102009057132B4 (de) * 2009-12-08 2019-12-05 Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen Drahtlose Desinfektionsmittelspenderüberwachung
US20110277546A1 (en) * 2010-05-11 2011-11-17 Armitage David L Tank fullness monitoring system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767775A (en) * 1994-02-25 1998-06-16 Shukla; Ashok K. Unanchored sensor and level sensor
WO2009110784A1 (fr) * 2008-03-05 2009-09-11 Lely Patent N.V. Dispositif de mesure destiné à être disposé dans un réservoir de lait, agencement de mesure comprenant un dispositif de mesure et procédé de surveillance d'un réservoir de lait et/ou d'une quantité de lait présente dans le réservoir de lait
GB2476820A (en) * 2010-01-11 2011-07-13 Ying Yeeh Entpr Co Ltd Drinking water level alarm lamp

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