WO2002099765A1 - Resonance circuit - Google Patents

Resonance circuit Download PDF

Info

Publication number
WO2002099765A1
WO2002099765A1 PCT/IB2001/000990 IB0100990W WO02099765A1 WO 2002099765 A1 WO2002099765 A1 WO 2002099765A1 IB 0100990 W IB0100990 W IB 0100990W WO 02099765 A1 WO02099765 A1 WO 02099765A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonance circuit
change
measuring electrodes
resonance
value
Prior art date
Application number
PCT/IB2001/000990
Other languages
French (fr)
Inventor
Poul Richter JØRGENSEN
Original Assignee
Joergensen Poul Richter
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 Joergensen Poul Richter filed Critical Joergensen Poul Richter
Priority to PCT/IB2001/000990 priority Critical patent/WO2002099765A1/en
Publication of WO2002099765A1 publication Critical patent/WO2002099765A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details

Definitions

  • the present invention relates to a resonance circuit arranged on an insulating substrate and comprising at least one inductance and one capacitor on said substrate forming the dielectric of the capacitor.
  • Resonance circuits of the aforementioned type made of at least one coil or inductance and at least one cpacitor in series or parallel, built on either one or both sides of an insulating substrate are widely known, e.g. as used as so called tags (resonance labels) in anti-theft protection systems. It is also well known that the frequency of such circuits can be measured wirelessly from outside by using appropriate known measuring devices.
  • the present invention consists in a resonance circuit as defined hereinabove equipped with at least one pair of spaced measuring electrodes arranged in parallel or in series with the components of the resonance circuit in such a manner that a material able to change its electric conductivity under external influences can be placed or can pass in the space between said electrodes thereby determining the Q value and/or the resonance frequency of the resonance circuit, whereby any change of the electric conductivity of the material placed between said electrodes will change the Q-value or the resonance frequency of the resonance circuit.
  • the resonant circuit according to the present invention thus permits to measure and survey the electric conductivity of a material and also all changes of same under any external influence such as e.g. moisture and temperature.
  • any material placed between the measuring electrodes or passing between them e.g. in case of a liquid
  • any material placed between the measuring electrodes or passing between them e.g. in case of a liquid
  • able to change its electric conductivity will change the Q-value and/or the resonance frequency of the resonance circuit and this can easily be surveyed and measured.
  • the measuring electrodes consist e.g. of at least one electric conductive track connected in series and/or in parallel with at least one component of the resonance circuit. The measuring electrodes are running closely to each other. Their distance depends on the material to be surveyed and measured and may vary from tenth part of a millimeter to many millimeters.
  • the components of the resonance circuit and the measuring electrodes can e.g. be etched out of thin aluminum foil on a bearing layer of plastic such as polypropylene.
  • the measuring electrodes are placed in relation to the components of the resonance circuit, and whether there are one or more coils and capacitors in the resonance circuit, depends on the material to be measured and which parameter the material in question should change. If the measuring electrodes are placed in series with the resonance circuit, a change of the conductivity of the material placed between the measuring electrodes will cause a change of the Q-value of the resonance circuit. In case of poor conductivity of, the material, the Q-value of the resonance circuit is low, inversely the Q-value is correspondingly high in case of good conductivity of the material (see fig. 1) .
  • the device according to the present invention is suitable for reading changes in the ohmic value of a material from approx. 500 K ⁇ to 0,2 ⁇ .
  • the measuring electrodes will typically be placed parallel above one of the capacitors of the resonance circuit.
  • Fig. 3 shows that a very low ohmic value will short circuit the parallel connected capacitor and thus change the resonance frequency of the resonance circuit.
  • the material placed between the measuring electrodes starts having a high ohmic value such as e.g. 100 K ⁇ and ends with a value of 0 ⁇ due to an external influence of the material, this assembling will firstly record the decreasing resistance value of the material, due to a decreasing Q-value, and secondly at 0 ⁇ record a change in the resonance frequency of the resonance circuit.
  • Figs. 1 to 8 show schematically different embodiments of resonance circuits with measuring electrodes according to the present invention.
  • measuring electrodes are designated by letters E (or Ei if more than one pair of electrodes are provided) .
  • the schematic circuit part having indicated a resistance R (or Ri) represents the material to be surveyed or measured.
  • the material to be measured is placed between the measuring electrodes E. If the material has a high ohmic value, the Q-value of the resonance circuit will be low. The Q-value will increase parallel with the decreasing resistance of the material. The highest Q-value is observed when the material has a resistance of 0 ⁇ . The resonance frequency is the same irrespective of the resistance of the material .
  • the material to be measured is placed between the measuring electrodes E. High resistance of the material results in a high Q-value for the resonance circuit. Low ohmic resistance in the material results in a low Q-value. If the resistance of the material is 0 ⁇ , the resonance circuit is short circuited.
  • Figure 3 represents a parallel connection between the measuring electrodes with one of the components of the resonance circuit.
  • the resonance frequency of the resonance circuit will change when the measuring electrodes are short circuited. By a disconnection of the resistance above the measuring electrodes, the resonance circuit gets its own resonance frequency.
  • Figure 5 shows a combination of a device according to Figures 3 and 4.
  • Figure 6 shows a combination of Figures 1, 2 and 4 and Figures 7 and 8 further embodiments.

Abstract

A resonance circuit (L; C) arranged on a substrate is equipped with at least one pair of spaced measuring electrodes (E) arranged in parallel or in series with the components of the resonance circuit (L; C). A material (R) able to change its electric conductivity under external influences can be placed or pass in the space between said measuring electrodes (E). As such material influences the Q-value and/or the resonance frequency of the resonance circuit, surveying and measuring of the resonant frequency indicates any change of the conductivity of said material and thus any change of conditions at the place of said material due to external influences.

Description

Resonance circuit
The present invention relates to a resonance circuit arranged on an insulating substrate and comprising at least one inductance and one capacitor on said substrate forming the dielectric of the capacitor.
Resonance circuits of the aforementioned type made of at least one coil or inductance and at least one cpacitor in series or parallel, built on either one or both sides of an insulating substrate are widely known, e.g. as used as so called tags (resonance labels) in anti-theft protection systems. It is also well known that the frequency of such circuits can be measured wirelessly from outside by using appropriate known measuring devices.
It is a main object Of the present invention to use such resonance circuits for new applications, as the devices are easy and cheap to produce.
The present invention consists in a resonance circuit as defined hereinabove equipped with at least one pair of spaced measuring electrodes arranged in parallel or in series with the components of the resonance circuit in such a manner that a material able to change its electric conductivity under external influences can be placed or can pass in the space between said electrodes thereby determining the Q value and/or the resonance frequency of the resonance circuit, whereby any change of the electric conductivity of the material placed between said electrodes will change the Q-value or the resonance frequency of the resonance circuit.
The resonant circuit according to the present invention thus permits to measure and survey the electric conductivity of a material and also all changes of same under any external influence such as e.g. moisture and temperature.
Any material placed between the measuring electrodes or passing between them (e.g. in case of a liquid) and able to change its electric conductivity will change the Q-value and/or the resonance frequency of the resonance circuit and this can easily be surveyed and measured.
An external influence of the material might e.g. be moisture, in which case the device according to the invention could be used for finding leaks in pipes (equipped with such devices) . It might also be used where the conductivity of the measured material is influenced by temperature changes. The measuring electrodes consist e.g. of at least one electric conductive track connected in series and/or in parallel with at least one component of the resonance circuit. The measuring electrodes are running closely to each other. Their distance depends on the material to be surveyed and measured and may vary from tenth part of a millimeter to many millimeters.
The components of the resonance circuit and the measuring electrodes can e.g. be etched out of thin aluminum foil on a bearing layer of plastic such as polypropylene. Where the measuring electrodes are placed in relation to the components of the resonance circuit, and whether there are one or more coils and capacitors in the resonance circuit, depends on the material to be measured and which parameter the material in question should change. If the measuring electrodes are placed in series with the resonance circuit, a change of the conductivity of the material placed between the measuring electrodes will cause a change of the Q-value of the resonance circuit. In case of poor conductivity of, the material, the Q-value of the resonance circuit is low, inversely the Q-value is correspondingly high in case of good conductivity of the material (see fig. 1) .
The device according to the present invention is suitable for reading changes in the ohmic value of a material from approx. 500 KΩ to 0,2 Ω.
If a change of the electric conductivity of the material should cause a change of the resonance frequency of the resonance circuit, the measuring electrodes will typically be placed parallel above one of the capacitors of the resonance circuit. Fig. 3 shows that a very low ohmic value will short circuit the parallel connected capacitor and thus change the resonance frequency of the resonance circuit. If the material placed between the measuring electrodes starts having a high ohmic value such as e.g. 100 KΩ and ends with a value of 0 Ω due to an external influence of the material, this assembling will firstly record the decreasing resistance value of the material, due to a decreasing Q-value, and secondly at 0 Ω record a change in the resonance frequency of the resonance circuit.
In order to further describe the invention, reference is made to the appending drawings showing different embodiments. In the drawings: Figs. 1 to 8 show schematically different embodiments of resonance circuits with measuring electrodes according to the present invention.
In all Figures of the drawings the measuring electrodes are designated by letters E (or Ei if more than one pair of electrodes are provided) . The schematic circuit part having indicated a resistance R (or Ri) represents the material to be surveyed or measured.
In fig. 1 the material to be measured is placed between the measuring electrodes E. If the material has a high ohmic value, the Q-value of the resonance circuit will be low. The Q-value will increase parallel with the decreasing resistance of the material. The highest Q-value is observed when the material has a resistance of 0 Ω. The resonance frequency is the same irrespective of the resistance of the material .
In figure 2, the material to be measured is placed between the measuring electrodes E. High resistance of the material results in a high Q-value for the resonance circuit. Low ohmic resistance in the material results in a low Q-value. If the resistance of the material is 0 Ω, the resonance circuit is short circuited.
Figure 3 represents a parallel connection between the measuring electrodes with one of the components of the resonance circuit.
With this circuit the same result for the Q-value of the resonance circuit as shown on Figure 2 is obtained. The difference between Figures 2 and 3 is the fact that when the measuring electrodes are short circuited, the resonance frequency of the resonance circuit will change. In Figure 4 the measuring electrodes are in parallel with parts of the coil.
The resonance frequency of the resonance circuit will change when the measuring electrodes are short circuited. By a disconnection of the resistance above the measuring electrodes, the resonance circuit gets its own resonance frequency.
Figure 5 shows a combination of a device according to Figures 3 and 4. Figure 6 shows a combination of Figures 1, 2 and 4 and Figures 7 and 8 further embodiments.
More than the above mentioned 8 combinations are possible, Common to them all is the fact that a change of conductivity in the 'measured material will change the Q value and/or the resonance frequency of the resonance circuit .

Claims

Claims :
1. A resonance circuit arranged on an insulating substrate and comprising at least one inductance and one capacitor on said substrate forming the dielectric of the capacitor, characterized by at least one pair of spaced measuring electrodes arranged in parallel or in series with the components of the resonance circuit in such a manner that a material able to change its electric conductivity under external influences can be placed or can pass in the space between said electrodes thereby determining the Q value and/or the resonance frequency of the resonance circuit, whereby any change of the electric conductivity of the material placed between said electrodes will change the Q-value or the resonance frequency of the resonance circuit.
2. A resonance circuit as claimed in claim 1, characterized in that the components of the resonance circuit and said measuring electrodes are arranged on one or both sides of said substrate.
3. A resonance circuit as claimed in claim 1 or 2, characterized in that said measuring electrodes have any desired shape and size.
4. A resonance circuit as claimed in any of claims 1 to
3. characterized in that cooperating measuring electrodes are arranged at any desired distance from each other.
5. Use of resonance circuits as defined in any of claims 1 to 4 for detecting or measuring any changes of the conductivity of a material placed or passing between said measuring electrodes to indicate any external influences on said material.
PCT/IB2001/000990 2001-06-01 2001-06-01 Resonance circuit WO2002099765A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2001/000990 WO2002099765A1 (en) 2001-06-01 2001-06-01 Resonance circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2001/000990 WO2002099765A1 (en) 2001-06-01 2001-06-01 Resonance circuit

Publications (1)

Publication Number Publication Date
WO2002099765A1 true WO2002099765A1 (en) 2002-12-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/000990 WO2002099765A1 (en) 2001-06-01 2001-06-01 Resonance circuit

Country Status (1)

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WO (1) WO2002099765A1 (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004042668A1 (en) * 2002-11-04 2004-05-21 Upm Rafsec Oy A method for manufacturing a product sensor, and a product sensor
NL1026690C2 (en) * 2004-07-20 2006-01-23 Nedap Nv Electronic detection system for detecting anti-theft and / or identification labels.
US8398603B2 (en) 2006-02-28 2013-03-19 Coloplast A/S Leak sensor
CN106443826A (en) * 2016-10-08 2017-02-22 绍兴职业技术学院 EAS hard tag mass parameter detection device
US10531977B2 (en) 2014-04-17 2020-01-14 Coloplast A/S Thermoresponsive skin barrier appliances
US10849781B2 (en) 2017-12-22 2020-12-01 Coloplast A/S Base plate for an ostomy appliance
US11534323B2 (en) 2017-12-22 2022-12-27 Coloplast A/S Tools and methods for placing a medical appliance on a user
US11540937B2 (en) 2017-12-22 2023-01-03 Coloplast A/S Base plate and sensor assembly of a medical system having a leakage sensor
US11547596B2 (en) 2017-12-22 2023-01-10 Coloplast A/S Ostomy appliance with layered base plate
US11589811B2 (en) 2017-12-22 2023-02-28 Coloplast A/S Monitor device of a medical system and associated method for operating a monitor device
US11590015B2 (en) 2017-12-22 2023-02-28 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a method for manufacturing a sensor assembly part and a base plate
US11607334B2 (en) 2017-12-22 2023-03-21 Coloplast A/S Base plate for a medical appliance, a monitor device and a system for a medical appliance
US11612508B2 (en) 2017-12-22 2023-03-28 Coloplast A/S Sensor assembly part for a medical appliance and a method for manufacturing a sensor assembly part
US11612512B2 (en) 2019-01-31 2023-03-28 Coloplast A/S Moisture detecting base plate for an ostomy appliance and a system for determining moisture propagation in a base plate and/or a sensor assembly part
US11627891B2 (en) 2017-12-22 2023-04-18 Coloplast A/S Calibration methods for medical appliance tools
US11628084B2 (en) 2017-12-22 2023-04-18 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a device for connecting to a base plate or a sensor assembly part
US11654043B2 (en) 2017-12-22 2023-05-23 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a method for manufacturing a base plate or a sensor assembly part
US11701248B2 (en) 2017-12-22 2023-07-18 Coloplast A/S Accessory devices of a medical system, and related methods for communicating leakage state
US11707377B2 (en) 2017-12-22 2023-07-25 Coloplast A/S Coupling part with a hinge for a medical base plate and sensor assembly part
US11707376B2 (en) 2017-12-22 2023-07-25 Coloplast A/S Base plate for a medical appliance and a sensor assembly part for a base plate and a method for manufacturing a base plate and sensor assembly part
US11717433B2 (en) 2017-12-22 2023-08-08 Coloplast A/S Medical appliance with angular leakage detection
US11786392B2 (en) 2017-12-22 2023-10-17 Coloplast A/S Data collection schemes for an ostomy appliance and related methods
US11819443B2 (en) 2017-12-22 2023-11-21 Coloplast A/S Moisture detecting base plate for a medical appliance and a system for determining moisture propagation in a base plate and/or a sensor assembly part
US11865029B2 (en) 2017-12-22 2024-01-09 Coloplast A/S Monitor device of a medical system having a connector for coupling to both a base plate and an accessory device
US11872154B2 (en) 2017-12-22 2024-01-16 Coloplast A/S Medical appliance system, monitor device, and method of monitoring a medical appliance
US11918506B2 (en) 2017-12-22 2024-03-05 Coloplast A/S Medical appliance with selective sensor points and related methods
US11931285B2 (en) 2018-02-20 2024-03-19 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a device for connecting to a base plate and/or a sensor assembly part

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DE3437950A1 (en) * 1984-10-17 1985-04-18 Arno H. Dipl.-Ing. 7141 Beilstein Taruttis Device for determining the moisture content in babies' nappies while they are being worn
GB2181286A (en) * 1985-09-26 1987-04-15 Nippon Kodoshi Corp Diapers incorporating enuresis detectors
DE4439954A1 (en) * 1994-11-09 1996-05-15 Georg Dr Mahal Windscreen wiper assembly with moisture detector, for motor vehicle
DE29821494U1 (en) * 1998-12-02 1999-03-18 Klaus Fischer Mes Und Regeltec Device for measuring the dry matter content in solutions containing sugar
WO1999033037A1 (en) * 1997-12-22 1999-07-01 Bent Thorning Bensen A/S Method and apparatus for detecting a fluid and a temperature
EP1058109A1 (en) * 1998-11-02 2000-12-06 Kabushiki Kaisha Meidensha Qcm sensor
WO2000079497A1 (en) * 1999-06-21 2000-12-28 Bent Thorning Bensen A/S Radiofrequency resonant circuit sensing device, method of its production, and uses
CA2314200A1 (en) * 1999-07-24 2001-01-24 Deere & Company Device for the measurement of moisture of harvested crop

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437950A1 (en) * 1984-10-17 1985-04-18 Arno H. Dipl.-Ing. 7141 Beilstein Taruttis Device for determining the moisture content in babies' nappies while they are being worn
GB2181286A (en) * 1985-09-26 1987-04-15 Nippon Kodoshi Corp Diapers incorporating enuresis detectors
DE4439954A1 (en) * 1994-11-09 1996-05-15 Georg Dr Mahal Windscreen wiper assembly with moisture detector, for motor vehicle
WO1999033037A1 (en) * 1997-12-22 1999-07-01 Bent Thorning Bensen A/S Method and apparatus for detecting a fluid and a temperature
EP1058109A1 (en) * 1998-11-02 2000-12-06 Kabushiki Kaisha Meidensha Qcm sensor
DE29821494U1 (en) * 1998-12-02 1999-03-18 Klaus Fischer Mes Und Regeltec Device for measuring the dry matter content in solutions containing sugar
WO2000079497A1 (en) * 1999-06-21 2000-12-28 Bent Thorning Bensen A/S Radiofrequency resonant circuit sensing device, method of its production, and uses
CA2314200A1 (en) * 1999-07-24 2001-01-24 Deere & Company Device for the measurement of moisture of harvested crop

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7492164B2 (en) 2002-11-04 2009-02-17 Upm-Kymmene Corporation Method for manufacturing a product sensor, and a product sensor
WO2004042668A1 (en) * 2002-11-04 2004-05-21 Upm Rafsec Oy A method for manufacturing a product sensor, and a product sensor
NL1026690C2 (en) * 2004-07-20 2006-01-23 Nedap Nv Electronic detection system for detecting anti-theft and / or identification labels.
EP4094739A1 (en) 2006-02-28 2022-11-30 Coloplast A/S A reader unit for an ostomy appliance
US8398603B2 (en) 2006-02-28 2013-03-19 Coloplast A/S Leak sensor
EP3505147A1 (en) 2006-02-28 2019-07-03 Coloplast A/S A leak sensor
US10531977B2 (en) 2014-04-17 2020-01-14 Coloplast A/S Thermoresponsive skin barrier appliances
CN106443826A (en) * 2016-10-08 2017-02-22 绍兴职业技术学院 EAS hard tag mass parameter detection device
US11730622B2 (en) 2017-12-22 2023-08-22 Coloplast A/S Medical appliance with layered base plate and/or sensor assembly part and related methods
US11628084B2 (en) 2017-12-22 2023-04-18 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a device for connecting to a base plate or a sensor assembly part
US11540937B2 (en) 2017-12-22 2023-01-03 Coloplast A/S Base plate and sensor assembly of a medical system having a leakage sensor
US11547596B2 (en) 2017-12-22 2023-01-10 Coloplast A/S Ostomy appliance with layered base plate
US11547595B2 (en) 2017-12-22 2023-01-10 Coloplast A/S Base plate and a sensor assembly part for a medical appliance
US11589811B2 (en) 2017-12-22 2023-02-28 Coloplast A/S Monitor device of a medical system and associated method for operating a monitor device
US11590015B2 (en) 2017-12-22 2023-02-28 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a method for manufacturing a sensor assembly part and a base plate
US11607334B2 (en) 2017-12-22 2023-03-21 Coloplast A/S Base plate for a medical appliance, a monitor device and a system for a medical appliance
US11612508B2 (en) 2017-12-22 2023-03-28 Coloplast A/S Sensor assembly part for a medical appliance and a method for manufacturing a sensor assembly part
US11612509B2 (en) 2017-12-22 2023-03-28 Coloplast A/S Base plate and a sensor assembly part for an ostomy appliance
US11918506B2 (en) 2017-12-22 2024-03-05 Coloplast A/S Medical appliance with selective sensor points and related methods
US11622719B2 (en) 2017-12-22 2023-04-11 Coloplast A/S Sensor assembly part, base plate and monitor device of a medical system and associated method
US11627891B2 (en) 2017-12-22 2023-04-18 Coloplast A/S Calibration methods for medical appliance tools
US11534323B2 (en) 2017-12-22 2022-12-27 Coloplast A/S Tools and methods for placing a medical appliance on a user
US11654043B2 (en) 2017-12-22 2023-05-23 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a method for manufacturing a base plate or a sensor assembly part
US11701248B2 (en) 2017-12-22 2023-07-18 Coloplast A/S Accessory devices of a medical system, and related methods for communicating leakage state
US11707377B2 (en) 2017-12-22 2023-07-25 Coloplast A/S Coupling part with a hinge for a medical base plate and sensor assembly part
US11707376B2 (en) 2017-12-22 2023-07-25 Coloplast A/S Base plate for a medical appliance and a sensor assembly part for a base plate and a method for manufacturing a base plate and sensor assembly part
US11717433B2 (en) 2017-12-22 2023-08-08 Coloplast A/S Medical appliance with angular leakage detection
US10849781B2 (en) 2017-12-22 2020-12-01 Coloplast A/S Base plate for an ostomy appliance
US11872154B2 (en) 2017-12-22 2024-01-16 Coloplast A/S Medical appliance system, monitor device, and method of monitoring a medical appliance
US11786392B2 (en) 2017-12-22 2023-10-17 Coloplast A/S Data collection schemes for an ostomy appliance and related methods
US11819443B2 (en) 2017-12-22 2023-11-21 Coloplast A/S Moisture detecting base plate for a medical appliance and a system for determining moisture propagation in a base plate and/or a sensor assembly part
US11844718B2 (en) 2017-12-22 2023-12-19 Coloplast A/S Medical device having a monitor mechanically and electrically attachable to a medical appliance
US11865029B2 (en) 2017-12-22 2024-01-09 Coloplast A/S Monitor device of a medical system having a connector for coupling to both a base plate and an accessory device
US11931285B2 (en) 2018-02-20 2024-03-19 Coloplast A/S Sensor assembly part and a base plate for a medical appliance and a device for connecting to a base plate and/or a sensor assembly part
US11737907B2 (en) 2019-01-31 2023-08-29 Coloplast A/S Moisture detecting base plate for an ostomy appliance and a system for determining moisture propagation in a base plate and/or a sensor assembly part
US11612512B2 (en) 2019-01-31 2023-03-28 Coloplast A/S Moisture detecting base plate for an ostomy appliance and a system for determining moisture propagation in a base plate and/or a sensor assembly part

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