EP3615904A1 - Vorrichtung zur messung von druck und/oder feuchtigkeit - Google Patents
Vorrichtung zur messung von druck und/oder feuchtigkeitInfo
- Publication number
- EP3615904A1 EP3615904A1 EP19727365.9A EP19727365A EP3615904A1 EP 3615904 A1 EP3615904 A1 EP 3615904A1 EP 19727365 A EP19727365 A EP 19727365A EP 3615904 A1 EP3615904 A1 EP 3615904A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- moisture
- sensor
- capacitor
- dielectric layer
- 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.)
- Withdrawn
Links
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- 238000000034 method Methods 0.000 claims abstract description 31
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- 239000002759 woven fabric Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 10
- 239000000758 substrate Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 17
- 239000004744 fabric Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 238000007639 printing Methods 0.000 description 7
- 238000003306 harvesting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
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- 239000000835 fiber Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 239000003989 dielectric material Substances 0.000 description 1
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- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/0022—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for sensing anthropometric parameters, e.g. heart rate or body temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/0024—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat
- B60N2/0025—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat by using weight measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
- G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
- G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
- G01L1/144—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors with associated circuitry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
- G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
- G01N27/225—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity by using hygroscopic materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/228—Circuits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/10—Field detection presence sensors
- B60N2210/12—Capacitive; Electric field
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09672—Superposed layout, i.e. in different planes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
Definitions
- the present invention relates to a device for measuring pressure and / or moisture and a method for measuring pressure and / or moisture, comprising the respective preambles of claims 1 and 8.
- the device according to the invention for measuring pressure and / or moisture comprises at least one sensor for measuring pressure and / or moisture, the sensor comprising at least one capacitor with at least two electrodes which, in particular in a horizontal direction, along and on one, in particular flexible, carrier material are arranged with respect to one another, with at least one dielectric layer being arranged between the electrodes.
- the horizontal direction is preferably a main direction of extension of the flexible carrier material.
- “flexible” means that the carrier material is at least in places flexible and thus elastic.
- the backing material can be a woven fabric or an other clothing fabric such as a polyester.
- the dielectric layer thus spaces the two electrodes in a horizontal and / or in a transverse direction perpendicular thereto.
- at least one, at least partially, at least one, at least partially liquid-permeable and / or liquid-absorbing moisture layer is arranged on a side facing away from the carrier material and / or the dielectric layer, the at least one electrode and / or dielectric layer thus being in one Transverse direction are arranged between the carrier material and the moisture layer, so that a capacity changes, at least partially, due to the liquid that at least partially strikes the dielectric layer, a processing unit being set up and intended to measure and / or store this change , so that a capacitive humidity sensor is created
- the dielectric constant of the polymer material changes as a function of a moisture content.
- the task of the processing unit is, among other things, to determine the relative humidity as precisely as possible from a measured ambient temperature and the moisture-dependent capacitance value of the sensor.
- the device for measuring pressure and / or moisture comprises at least one sensor for measuring pressure and / or moisture, the sensor comprising at least one capacitor with at least two electrodes, which in particular run in a horizontal direction one and are arranged to one another on a particularly flexible carrier material, at least one dielectric layer being arranged between the electrodes.
- the moisture layer can be formed with a dielectric material.
- the material of the moisture layer can be different from the material of the waterproof layer.
- the sensor and / or the processing unit can be supplied with electrical energy by means of a battery or a fixed mains power supply. Alternatively or additionally, it is possible to generate electrical energy to supply the sensor and / or processing unit by means of so-called “energy harvesting”.
- Energy harvesting is the extraction of small amounts of electrical energy from sources such as ambient temperature, vibrations or air currents for mobile devices with low power.
- the structures used for this are also referred to as nanogenerators.
- energy harvesting avoids restrictions due to wired power supply or batteries. Possibilities of energy harvesting:
- Piezoelectric crystals generate electrical voltages when subjected to force, for example through pressure or vibration. These crystals can be arranged on or on the carrier material.
- Thermoelectric generators and pyroelectric crystals derive electrical energy from temperature differences. These generators can be arranged on or on the carrier material.
- the energy of radio waves can be captured and used energetically via antennas.
- Passive RFIDs are an example of this. These antennas can be arranged on or on the carrier material.
- the senor is additionally a capacitive pressure sensor, the processing unit being additionally set up and intended to measure and / or store a change in capacitance of the capacitor caused by external pressure.
- a capacitive sensor is a sensor that works on the basis of the change in the electrical capacitance of an individual capacitor or a capacitor system.
- the capacity can be influenced by the size to be recorded in various ways, which is primarily determined by the intended use.
- a capacitive sensor is based, among other things, on the fact that two electrodes, one of which can be the surface to be measured, form the "plates" of an electrical capacitor whose capacitance or change in capacitance is measured, which can be influenced as follows:
- a plate is displaced and / or deformed by the metering effect, which changes the distance between the plates and thus the electrical measurable capacitance.
- electrically conductive material or a dielectric is brought into close proximity.
- the effective plate area changes by moving the plates against each other like a rotating capacitor.
- the actual measuring electrode can often be surrounded by a shielding electrode, which shields the inhomogeneous edge area of the electrical field from the measuring electrode, which results in an approximately parallel electrical field between the measuring electrodes, usually grounded, counter electrode with the well-known characteristics of an ideal plate capacitor.
- a capacitive pressure sensor is, in particular, one in which the change in capacitance due to the bending of a membrane and the resulting change in the plate spacing is evaluated as a sensor effect.
- the membrane is the above-mentioned dielectric or around the individual capacitor electrodes, which can be designed in particular in the form of a plate.
- a capacitive moisture sensor is combined in a new way with a capacitive pressure sensor, but without these components forming separate elements or two separate sensors; instead, the present embodiment is a “two in One "concept, in which the same sensor functions both as a moisture sensor and as a pressure sensor.
- the carrier material is a woven fabric, in particular in which electrical conductor tracks for electrically contacting the sensor and the processing unit are woven.
- a woven fabric is therefore a fabric that has been woven manually or by machine on the basis of individual threads.
- the electrical conductor tracks can therefore also be integrated in a fabric in addition to the usual fibers and fabric strands or they can replace individual fabric strands which form the fabric network.
- very loose fabrics such as bandages or dense fabrics such as brocade, can be created.
- Fabrics are used in a longitudinally elastic manner using rubber threads used as warp threads (more ribbons used) or crimped and bulked yarns. They are tensioned, processed and contract in the idle state.
- Bulk yarns consist of textured, i.e. crimped, synthetic fibers. The crimp changes the properties of the synthetic fibers.
- the yarns spun on it are very elastic and voluminous and have good thermal insulation.
- the carrier material can be part of a cover material for a seat, in particular a vehicle seat or an office chair.
- the sensor but preferably the entire device, can be applied to the cover fabric of such a seat or can be integrated into such.
- the processing unit is set up and intended to record the individual moisture and pressure values and to determine from a combination of the individual moisture and pressure values at least one respective characteristic value from which it can be derived which individual (with weight and / or size) is currently occupying the vehicle seat.
- a weight of the respective person can be derived and determined from the pressure measurement by the processing unit.
- the respective moisture which the respective person emits to the sensor can also be measured, the respective characteristic value being, for example, a product of the relative moisture value times the load weight determined by the processing unit.
- the processing unit can issue a warning, in particular by means of a connection to the electronics of the vehicle.
- This warning may indicate that the seat is overcrowded or the driver is sweating excessively.
- this warning can also be replaced by a corresponding display as to what type of occupancy the seat is using.
- An occupancy type can be a weight classification of a respective user, or it can also be a question of whether the user is an animal, a human or a thing.
- the processing unit can therefore preferably be integrated into display electronics of the vehicle, or at least can be connected to such.
- the processing unit connects to a receiving unit of the vehicle, for example by means of Bluetooth or another wireless connection, and the respective characteristic or limit value and / or the respective warning and / or the respective identification of the user on a display of the Vehicle can be played.
- these individual values and / or identifications can also be called up externally and / or displayed externally.
- the car can be monitored for overcrowding by an external controller.
- the processing unit can be connected to a triggering unit of an airbag by means of a data connection, so that the processing unit can also trigger the triggering. can control and / or regulate unit, in particular with regard to a deployment time of the airbag. Additionally and / or alternatively, it is possible for the processing unit to supply a controller unit of the airbag with data, for example with regard to an occupancy type, position and / or weight of a user of the vehicle seat.
- At least one electrode and / or dielectric layer is printed on the carrier material or on a layer, in particular water-impermeable, arranged on the carrier material or applied by means of a thin-layer method.
- the printing process can, for example, be an inkjet process.
- the processing unit is applied to the carrier material in the same way as the sensor.
- the processing unit but at least one, in particular conductive, layer of the processing unit is also printed on the carrier material, for example.
- the data communication between the processing unit and the sensor can then be established via the above-mentioned conductor tracks.
- These conductor tracks can be at least partially, but preferably completely, woven into the woven fabric or even form individual fibers of the woven fabric itself.
- at least one electrode is flat. This means that a thickness of the electrode is negligible compared to its surface area.
- Such an electrode can therefore be manufactured in particular by means of a printing process.
- a thickness of at least one electrode can be at most 5 mm.
- the printing method can be used several times, so that at least two, but preferably then more, individual printing layers are stacked one on top of the other.
- the electrode can also be arranged on the carrier material by means of a 3D printing method.
- FDM process Fused Deposition Modeling
- FFF Fused Filament Fabrication
- FLM Fused Layer Modeling
- the process describes the layer-by-layer application (extrusion) of a material through a hot nozzle.
- the consumable is in the form of a long wire (so-called filament) on a roll and is pushed by the conveyor unit into a print head, melted there and applied to a print bed.
- the print head and / or print bed can be moved in three directions. Plastic layers can be applied to each other step by step.
- the SLS process does this selectively by means of a laser (alternatively also electron beam or infrared beam). So only a certain part of the powder is melted together.
- a thin layer of powder is always applied by the coating unit on the print bed.
- the laser or other energy source
- the laser is now precisely aligned to individual points in the powder layer in order to form the first layer of the print data.
- the powder is melted or melted and then solidifies again by slight cooling.
- the unmelted powder remains around the sintered areas and serves as a support material.
- the print bed lowers by a fraction of a millimeter.
- the coating unit now runs over the print bed and applies the next powder layer. Then the second Layer of print data sintered by the laser (or other energy source). This creates a three-dimensional object in layers.
- the 3DP process works very similar to selective laser sintering, but instead of a directed energy source, a print head moves over the powder. This releases tiny droplets of binder onto the underlying powder layers, which are then bonded together. Otherwise, this procedure is the same as the SLS procedure.
- liquid resins are used in the stereolithography process. They are hardened in layers by UV radiation and thus create three-dimensional objects. To do this, the construction platform in the Harz basin is gradually lowered.
- polyjet process without an entire pool with liquid resin. To do this, an epoxy resin is applied drop by drop from a nozzle and immediately cured by a UV laser.
- LOM Laminated Object Manufacturing
- LLM Layer Laminated Manufacturing
- One or more water-impermeable layers and / or the moisture layer can be applied in the same way and / or thickness as the electrode.
- the moisture layer completely covers the capacitor.
- the moisture layer delimits and closes the sensor from the outside, that is to say in the transverse direction, so that the sensor is arranged between the moisture layer and the carrier material.
- the senor has at least one further capacitor which is arranged in the transverse direction below or above the capacitor and is spaced apart from the capacitor by a further water-impermeable layer on or below this further water-impermeable layer, so that a capacitor stack arises.
- the further capacitor can be constructed in the same way as the capacitor and can also be arranged on the further water-impermeable layer in the same way as the capacitor.
- the sensor system can be refined in a particularly simple manner, to the extent that it is conceivable that with two sensors forming the capacitor stack, both sensors perform the same tasks, but that the individual sensors determine respective measured values which, taken together, suggest an average value to let. For example, the (relative) humidity of the environment is measured by each of the two sensors, and the average moisture value is then determined from these two measured values. The same can be done accordingly with the pressure measurement, so that the accuracy of the entire measurement, in particular a combination of the measurements of (relative) humidity and the respective pressure, can be designed particularly precisely.
- the water-impermeable layer and / or the further water-impermeable layer at least partially forms the dielectric view itself.
- this dielectric layer itself is formed by the water-impermeable layer and / or the further water-impermeable layer.
- Such generation of the dielectric layer by the water-impermeable layer (s) therefore forms a particularly simple and inexpensive manufacturing process for an inexpensive device.
- the electrodes, the dielectric layer and the water-impermeable layer (s) can in principle be arranged in such a way that an electrical short circuit is prevented in any case.
- a maximum thickness of the moisture layer is at least 30% and at most 80% of the maximum thickness of the water-impermeable layer and / or the maximum thickness of the further water-impermeable layer.
- the present invention relates to a method for measuring pressure and / or moisture, it being particularly noted that all of the features disclosed for the above-described device are also disclosed for the method described here and vice versa.
- the method for measuring pressure and / or moisture initially comprises a first step by means of which at least one sensor for measuring pressure and / or moisture is provided, the sensor at least one capacitor with at least two electrodes which in particular in a horizontal direction along and on one, in particular flexible, support material are arranged to each other, wherein at least one dielectric layer is arranged between the electrodes.
- At least in places, at least in places, at least partially liquid-permeable and / or liquid-absorbing moisture layer is arranged on a side facing away from the carrier material and / or the dielectric layer, the at least one electrode and / or the dielectric layer thus in a transverse direction are arranged between the carrier material and the moisture layer, so that a capacitance changes at least partially due to the liquid that at least partially impinges on the dielectric layer, a processing unit measuring and / or storing this change, so that a capacitive moisture sensor is produced.
- the method described above has the same advantages and advantageous configurations as the device described above.
- FIG. 1 shows a device according to the invention for measuring pressure and / or moisture in a first exemplary embodiment.
- FIG. 2 shows a schematic perspective view of an exploded drawing shown in relation to the layer order.
- FIG. 3 shows a further exemplary embodiment of a device described here.
- a sensor 1 is shown there by way of example, the sensor 1 showing a capacitor stack with a capacitor 20 and a capacitor 30, the individual electrodes 10, 11 of the capacitors 20, 30 being arranged one above the other in the horizontal direction H1, as an alternative to this, of course, an arrangement of the individual electrodes 10, 11 of an individual capacitor 20, 30 in the transverse direction Q1 which runs right to the horizontal direction H1 and thus can also run or be arranged perpendicular to the main direction of extent of the sensor 1 shown there.
- the individual electrodes 10, 11 are arranged on a carrier material 13.
- the carrier material 13 can in particular be a woven fabric, in particular a flexible woven fabric.
- a water-impermeable layer 4 is arranged on the carrier material 13, the two electrodes 10, 11 of the capacitor 20 being printed on this water-impermeable layer 4 in the horizontal direction H1.
- the electrodes 10, 11 of the capacitor 20 are completely surrounded by another water-impermeable layer 14.
- the further capacitor 30 with corresponding electrodes 10, 11 is printed on this water-impermeable layer 14 in the same way.
- exposed outer surfaces of the individual electrodes 10, 11 of the further capacitor 30 are preferably completely surrounded by a water-permeable and / or water-absorbing moisture layer 3. Via this moisture layer 3, water can strike a dielectric layer 4, which in the present case is arranged in the horizontal direction H1 between the respective electrodes 10, 11 of a capacitor 20, 30.
- the water-impermeable layer 4 itself forms a dielectric layer 4 of the capacitor 20.
- the water-impermeable layer 14 in relation to the further capacitor 30.
- the dielectric properties, in particular of the dielectric layer 2 of the further capacitor 30, are changed.
- a processing unit 5 can be seen, which is connected to the two capacitors 20, 30 in terms of data technology, this processing unit 5 is set up and intended to measure a change in the relative humidity of the environment and / or the moisture layer 3.
- the processing unit 5 can then compare a change in the capacitance of the further capacitor 30 with the stable capacitor capacitance of the capacitor 10, so that a particularly simple comparison can be made for this in the change in the relative humidity and / or the respective load pressure can.
- the arrow shown in FIG. 1 also shows a pressure direction under which the sensor 1 is pressurized. Both can preferably be measured, evaluated and stored by the sensor 1 and in particular by the device 100.
- the processing unit 5, which is shown as essential in the invention, serves in particular for this purpose, which can also measure and evaluate corresponding pressure values and, in so far, associated changes in the capacity of the individual sensors 1, so that the processing unit 5 is additionally set up and provided for this purpose measure and / or store a change in capacitance of the capacitor 20 and in particular also of the further capacitor 30 caused by external pressure.
- the moisture layer 3 can be flexible or not flexible. It is also possible that the moisture layer 3 is designed as a woven fabric. In particular, it can be a woven fabric, which was mentioned as an example in the introductory part of the present application. In addition, however, it is also possible for the moisture layer 3 to be a substrate which has been applied, for example in the form of an epitaxy or an adhesive process, to the further capacitor 30, for example has been glued on.
- the water-impermeable layer 14 and / or the water-impermeable layer 15 can also be designed to be flexible and not flexible, in particular also in the form of a woven fabric or a substrate in the same way as the moisture layer 3.
- the electrodes 10, 11 of the two capacitors 20, 30 were printed on the water-impermeable layer 14 and the further water-impermeable layer 15 in the form of a printing process, for example an ink-jet printing process.
- FIG. 2 An exploded drawing is shown in FIG. 2, the particular arrangement of the electrodes 10, 11 of the capacitors 20, 30 being apparent in particular from FIG.
- the force acting on the sensor 1, represented by the direction of the arrow, and the moisture acting on the individual schematically represented drops can again be seen.
- the moisture penetrates in particular between the electrodes 10, 11 and has, for example, a considerable effect on the electrical property on the respective water-permeable layer 14, so that the capacitance of at least the further capacitor 30 as in FIG 1 explains changes in each case.
- FIG. 3 shows that the sensor 1 can consist of two electrodes 10 and one electrode 11.
- the electrodes 10 have one polarity (preferably the same polarity), while the electrode 11 has a different polarity, but in the right part of FIG. 3 the exploded view of the left part of FIG. 3 is shown and it can be seen that three water-impermeable layers 4, 14, 15 can be used.
- the electrodes 10 can also have different polarities and / or electrical potentials.
- the electrodes 10 can also be electrically connected to one another.
- the electrodes 10, 11 can also each have and / or generate a separate polarity and / or a separate electrical potential. The same can also apply to the electrodes in the following figures.
- the lowermost water-impermeable layer is in turn the water-impermeable layer 14, the subsequent water-impermeable layer 15 and the water-impermeable layer 16 arranged thereon in the transverse direction Q1 are a further water-impermeable layer, in each case one electrode on a separate water-impermeable layer Layer is applied in each case, in particular printed.
- the capacitor 20 shown in the left part of FIG. 3 is therefore produced by merging these layers, the electrodes 10 in each case in the transverse direction Q1, as in the corresponding partial image can be arranged on different levels.
- the electrode 11 can also be applied together with at least one of the electrodes 10 in a common plane, that is to say on or in a common water-impermeable layer 4, 14, 15, so that, for example, only the second of the electrodes 10 remains on a separate impermeable layer 4, 14, 15 must be stacked on.
- the individual electrodes 10, 11 can be arranged with respect to one another in different planes in the Q1 direction. For example, a pairwise assignment between exactly one water-impermeable layer 4, 14, 15 with exactly one electrode 10, 1 1 applies.
- the invention is not limited by the description based on the exemplary embodiment. Rather, the invention encompasses every new feature, as well as every combination of features, which in particular includes every combination of features in the patent claims, even if this feature or this combination itself is not explicitly specified in the patent claims or in the exemplary embodiments.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP20195928.5A EP3778331A1 (de) | 2018-07-18 | 2019-05-28 | Verfahren zum überwachen eines fahrers eines fahrzeugs mittels eines messsystems |
EP20172290.7A EP3715808A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018117349.0A DE102018117349B4 (de) | 2018-07-18 | 2018-07-18 | Vorrichtung zur Messung von Druck und Feuchtigkeit |
PCT/EP2019/063754 WO2020015898A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
Related Child Applications (2)
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EP20195928.5A Division EP3778331A1 (de) | 2018-07-18 | 2019-05-28 | Verfahren zum überwachen eines fahrers eines fahrzeugs mittels eines messsystems |
EP20172290.7A Division EP3715808A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
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EP3615904A1 true EP3615904A1 (de) | 2020-03-04 |
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EP20172290.7A Withdrawn EP3715808A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
EP20195928.5A Withdrawn EP3778331A1 (de) | 2018-07-18 | 2019-05-28 | Verfahren zum überwachen eines fahrers eines fahrzeugs mittels eines messsystems |
EP19727365.9A Withdrawn EP3615904A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
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EP20172290.7A Withdrawn EP3715808A1 (de) | 2018-07-18 | 2019-05-28 | Vorrichtung zur messung von druck und/oder feuchtigkeit |
EP20195928.5A Withdrawn EP3778331A1 (de) | 2018-07-18 | 2019-05-28 | Verfahren zum überwachen eines fahrers eines fahrzeugs mittels eines messsystems |
Country Status (4)
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US (1) | US11808725B2 (de) |
EP (3) | EP3715808A1 (de) |
DE (1) | DE102018117349B4 (de) |
WO (1) | WO2020015898A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102018119385B4 (de) * | 2018-08-09 | 2020-07-16 | B-Horizon GmbH | Kontrollsystem zur Abgleichung von gemessenen Druck- und Feuchtigkeitswerten |
US11385083B2 (en) * | 2018-12-07 | 2022-07-12 | Mohammad Kabany | Method for measuring and/or processing measured pressure and/or humidity values |
DE102019124363B4 (de) * | 2019-09-11 | 2022-03-10 | B-Horizon GmbH | Vorrichtung zur Messung von Feuchtigkeit mittels L-förmiger Elektroden |
DE102019131308A1 (de) * | 2019-11-20 | 2021-05-20 | B-Horizon GmbH | Vorrichtung zur Messung von Druck und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
DE102019134732A1 (de) * | 2019-12-17 | 2021-06-17 | B-Horizon GmbH | Vorrichtung zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
DE102020100670A1 (de) * | 2020-01-14 | 2021-07-15 | B-Horizon GmbH | Belegungsvorrichtung zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
DE102020100679A1 (de) * | 2020-01-14 | 2021-07-15 | B-Horizon GmbH | Ablagevorrichtung, insbesondere Matratzensensorvorrichtung zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
DE102020100810A1 (de) * | 2020-01-15 | 2021-07-15 | B-Horizon GmbH | Selbstlernende Belegungsvorrichtung zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
US11794695B2 (en) * | 2020-02-20 | 2023-10-24 | B-Horizon GmbH | Car sharing management system |
CN113790741B (zh) * | 2020-05-25 | 2024-06-07 | 武汉纺织大学 | 多功能传感集成的柔性织物基传感器及其应用 |
DE102021110998A1 (de) | 2020-12-29 | 2022-06-30 | B-Horizon GmbH | Verfahren zum automatischen Anpassen des Verhaltens eines mobilen Benutzerendgeräts, insbesondere zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
JP2023049820A (ja) * | 2021-09-29 | 2023-04-10 | トヨタ紡織株式会社 | 座席シート |
DE102022109047A1 (de) | 2022-04-13 | 2023-10-19 | B-Horizon GmbH | Verfahren zum automatischen Anpassen des Verhaltens eines mobilen Benutzerendgeräts, insbesondere zur Messung von Druck, Gas und/oder Feuchtigkeit auf Basis einer Umgebungsfeuchtigkeit |
DE102022003452B3 (de) | 2022-09-19 | 2023-11-30 | Mercedes-Benz Group AG | Vorrichtung zur Erfassung eines Feuchteintritts |
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GB9413568D0 (en) * | 1994-07-06 | 1994-08-24 | Electrotech Equipments Ltd | Semiconductor devices |
DE19601077C2 (de) * | 1996-01-13 | 2000-01-05 | Bosch Gmbh Robert | Kraftsensor |
US6240622B1 (en) * | 1999-07-09 | 2001-06-05 | Micron Technology, Inc. | Integrated circuit inductors |
JP2003156464A (ja) | 2001-11-19 | 2003-05-30 | Denso Corp | 容量式湿度センサ |
US7461560B2 (en) * | 2005-03-28 | 2008-12-09 | Microstrain, Inc. | Strain gauge with moisture barrier and self-testing circuit |
US20060007059A1 (en) * | 2004-07-06 | 2006-01-12 | Bell Jonathan A | Flexible display screen arrangements and applications thereof |
WO2006040781A2 (en) * | 2004-10-14 | 2006-04-20 | Neopress S.R.L. | Sensor for measuring phisical quantities based on the detection of the variation of an electrical parameter, and method for its fabrication |
US9124955B2 (en) * | 2011-09-19 | 2015-09-01 | Card Guard Scientific Survival Ltd. | Vehicle driver monitor and a method for monitoring a driver |
US10175188B2 (en) * | 2013-03-15 | 2019-01-08 | Robert Bosch Gmbh | Trench based capacitive humidity sensor |
DE102014207807A1 (de) * | 2014-04-25 | 2015-10-29 | Bayerische Motoren Werke Aktiengesellschaft | Personenbezogene Fahrerunterstützung |
FI125745B (fi) | 2014-07-18 | 2016-01-29 | Maricare Oy | Anturijärjestely |
CN107257869B (zh) * | 2015-02-13 | 2020-09-29 | 苹果公司 | 具有导电路径的织造物 |
KR101707002B1 (ko) | 2015-03-04 | 2017-02-15 | 숭실대학교산학협력단 | 복합 감지형 센서 및 제조방법 |
US9658179B2 (en) * | 2015-06-24 | 2017-05-23 | Infineon Technologies Ag | System and method for a MEMS transducer |
CN112822840A (zh) * | 2015-08-20 | 2021-05-18 | 苹果公司 | 具有电子部件阵列的基于织物的物品 |
EP3402393B1 (de) * | 2016-01-14 | 2021-07-07 | King Abdullah University Of Science And Technology | Papierbasierte elektronikplattform |
EP3469323A4 (de) * | 2016-06-08 | 2020-03-18 | The University of British Columbia | Oberflächensensorarrays mit ionisch leitfähigem material |
US11623647B2 (en) * | 2016-10-27 | 2023-04-11 | Toyota Motor Engineering & Manufacturing North America, Inc. | Driver and vehicle monitoring feedback system for an autonomous vehicle |
CN107854220B (zh) | 2017-11-03 | 2022-02-18 | 深圳一代科技有限公司 | 一种电子感湿吸收用品及其潮湿程度检测方法 |
DE102018118612A1 (de) * | 2018-08-01 | 2020-02-06 | B-Horizon GmbH | Messsystem zur Messung von Druck und/oder Feuchtigkeit |
DE102018119385B4 (de) * | 2018-08-09 | 2020-07-16 | B-Horizon GmbH | Kontrollsystem zur Abgleichung von gemessenen Druck- und Feuchtigkeitswerten |
-
2018
- 2018-07-18 DE DE102018117349.0A patent/DE102018117349B4/de active Active
-
2019
- 2019-05-28 WO PCT/EP2019/063754 patent/WO2020015898A1/de unknown
- 2019-05-28 EP EP20172290.7A patent/EP3715808A1/de not_active Withdrawn
- 2019-05-28 EP EP20195928.5A patent/EP3778331A1/de not_active Withdrawn
- 2019-05-28 EP EP19727365.9A patent/EP3615904A1/de not_active Withdrawn
- 2019-06-07 US US16/434,462 patent/US11808725B2/en active Active
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US20200025702A1 (en) | 2020-01-23 |
DE102018117349A1 (de) | 2020-01-23 |
DE102018117349B4 (de) | 2020-07-16 |
EP3778331A1 (de) | 2021-02-17 |
US11808725B2 (en) | 2023-11-07 |
EP3715808A1 (de) | 2020-09-30 |
WO2020015898A1 (de) | 2020-01-23 |
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