DE10153266B4 - pressure detector - Google Patents
pressure detector Download PDFInfo
- Publication number
- DE10153266B4 DE10153266B4 DE10153266A DE10153266A DE10153266B4 DE 10153266 B4 DE10153266 B4 DE 10153266B4 DE 10153266 A DE10153266 A DE 10153266A DE 10153266 A DE10153266 A DE 10153266A DE 10153266 B4 DE10153266 B4 DE 10153266B4
- Authority
- DE
- Germany
- Prior art keywords
- poles
- change
- capacitor
- pole
- folding edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
- G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems
-
- 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
- G01L1/146—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 for measuring force distributions, e.g. using force arrays
Abstract
Vorrichtung, geeignet zum Detektieren von Druck, mit mindestens zwei einen Kondensator (1) bildenden Polen (4, 6), welche gegeneinander beabstandet sind, und von denen mindestens einer zumindest teilweise flächig ausgebildet ist und deren Abstand (16) voneinander sich bei einem Wechsel der Detektorvorrichtung zwischen belastetem und unbelastetem Zustand ändert, dadurch gekennzeichnet, daß mindestens einer der Pole (4, 6) zumindest in einem der beiden Lastzustände längs einer Faltkante (10) gefaltet ist und die Faltkante (10) einen Öffnungsgrad aufweist, der sich bei einer Änderung des Lastzustands ändert und daß mindestens einer der Pole (4, 6) um mindestens einen anderer Pol (4, 6) gewickelt ist.Contraption, suitable for detecting pressure, with at least two a capacitor (1) forming poles (4, 6) which are spaced apart from each other, and at least one of which is at least partially planar is and whose distance (16) from each other in a change of Detector device between loaded and unloaded state changes, thereby characterized in that at least one of the poles (4, 6) at least in one of the two load states along a Folded edge (10) is folded and the folding edge (10) has an opening degree which occurs in the event of a change of the load state changes and that at least one of the poles (4, 6) is wound around at least one other pole (4, 6) is.
Description
Die vorliegende Erfindung betrifft eine Detektor-Vorrichtung nach dem Oberbegriff des Anspruches 1. Insbesondere ist sie zur Erkennung der Benutzung einer zum Sitzen bestimmten Einrichtung und der Berührung von zu überwachenden Flächen geeignet.The The present invention relates to a detector device after Preamble of claim 1. In particular, it is for detection the use of a seated device and the touch of to be monitored Suitable areas.
Es ist bekannt, flexible, plattenförmige Kondensatorpole durch eine kompressible Kunststoffschicht gegeneinander zu beabstanden. Wird ein solcher Kondensator-Sandwich mit Druck beaufschlagt, führt die elastische Kompression der Kunststoffschicht zu einer Annäherung der Kondensatorpole aneinander. Dadurch ändert sich die Kapazität des Kondensators. Aus dieser Änderung läßt sich auf das Vorhandensein eines Druckes und auf seine Höhe schließen. Nach einer Entlastung führt die komprimierte Kunststoffschicht die Kondensatorpole in ihre Ausgangsstellung zurück.It is known, flexible, plate-shaped Capacitor poles by a compressible plastic layer against each other to space. Will such a capacitor sandwich with pressure charged, leads the elastic compression of the plastic layer to approximate the Condenser poles to each other. This changes the capacitance of the capacitor. From this change let yourself to indicate the presence of a pressure and its height. To a discharge leads the compressed plastic layer, the capacitor poles in their original position back.
Nachteilig ist jedoch die Dicke und Steife eines solchen Kondensator-Sandwichs.adversely However, the thickness and stiffness of such a capacitor sandwich.
Aus
Gegenstand der Erfindungobject the invention
Solche Probleme werden bei einer erfindungsgemäßen Vorrichtung dadurch vermieden, daß mindestens einer der Pole zumindest in einem der beiden Lastzustände längs einer Faltkante gefaltet ist und die Faltkante einen Öffnungsgrad aufweist, der sich bei einer Änderung des Lastzustands ändert. Der Öffnungsgrad läßt sich je nach Ausführungsform dabei zweckmäßigerweise als Biegeradius oder als Biegewinkel erfassen. Außerdem besitzt eine solche Vorrichtung eine erhöhte Meßgenauigkeit.Such Problems are thereby avoided in a device according to the invention, that at least one of the poles at least in one of the two load states along a Faltkante is folded and the fold has an opening degree, which is in case of a change of the load state changes. The opening degree let yourself depending on the embodiment expediently detect as bending radius or as bending angle. Also owns such a device increased Measurement accuracy.
Bei der erfindungsgemäßen Lösung ist eine kompressible Kunststoff-Zwischenschicht nicht erforderlich. Die Kondensatorpole sind durch Luft gegeneinander beabstandet. Dadurch wird die Vorrichtung flexibler, leichter und dünner.at the solution according to the invention a compressible plastic intermediate layer not mandatory. The capacitor poles are by air against each other spaced. This makes the device more flexible, lighter and more portable thinner.
Eine Vorrichtung nach Anspruch 2 ermöglicht eine einfache Rückstellung durch eine elastisch verformte Faltkante. Zusätzliche Rückstell-Vorrichtungen entfallen.A Device according to claim 2 allows a simple default by an elastically deformed folding edge. Additional reset devices are eliminated.
Eine Vorrichtung nach Anspruch 3 ist mechanisch einfach aufgebaut und deshalb einfach zu fertigen.A Apparatus according to claim 3 is mechanically simple and therefore easy to manufacture.
Eine Vorrichtung nach Anspruch 4 ist kostengünstig und einfach zu fertigen.A Apparatus according to claim 4 is inexpensive and easy to manufacture.
Eine Vorrichtung nach Anspruch 5 ist kompakt und kostengünstig zu fertigen.A Device according to claim 5 is compact and inexpensive too finished.
Eine Vorrichtung nach Anspruch 6 benötigt keine zusätzlichen Rückstell-Einrichtungen.A Device according to claim 6 requires no additional Restoring facilities.
Figurencharacters
Nachfolgend wird die Erfindung im Detail anhand von Ausführungsbeispielen beschrieben. Diese dienen der Veranschaulichung und sollen die Erfindung nicht einschränken.following the invention will be described in detail with reference to embodiments. These are illustrative and not intended to the invention limit.
Die Figuren zeigen:The Figures show:
Beschreibung der Erfindungdescription the invention
Der
Pol
Die
Faltkante
Der Kondensator wird zur Benutzung an eine zu überwachende Fläche, z.B. eine Sitzfläche eines Fahrzeugsitzes angebracht und an eine nicht dargestellte Auswerteelektronik angeschlossen.The capacitor is for use on a surface to be monitored, for example, mounted a seat of a vehicle seat and connected to a transmitter, not shown.
Die
Detektor-Vorrichtung
Im
vorliegenden Ausführungsbeispiel
sind die Faltkanten
Wird
die Detektor-Vorrichtung mit einer Kraft F belastet, so führt dies
zu einer Verflachung des Folien-Pakets. Die Krümmungsradien der Kondensatorpole
Die
im Ausführungsbeispiel
dargestellten großen
Knickradien sind insbesondere bei leicht verformbaren Kondensatorpolen
Insbesondere bei steiferen Materialien ist es jedoch auch denkbar, daß die Faltkanten nicht als Krümmung sondern winkelförmig ausgeführt sind. In diesem Fall würden die Kapazitätsänderung und die Rückstellkraft durch das Maß der Winkelveränderung bestimmt.Especially with stiffer materials, however, it is also conceivable that the folding edges not as a curvature but angular accomplished are. In that case, would the capacity change and the restoring force by the measure of Angle change determined.
Die wechselweise Übereinanderordnung der Kondensatorpole dieser Ausführungsform führt zu einer gegenüber der ersten Ausführungsform vervielfachten Kapazität des Kondensators. Krafteinwirkungen führen deshalb auch zu einer vervielfachten Kapazitätsänderung. Dadurch ist die Meßgenauigkeit der Detektor-Vorrichtung verbessert.The alternately superposition the capacitor poles of this embodiment leads to one opposite the first embodiment multiplied capacity of the capacitor. Force effects therefore also lead to a multiplied capacity change. As a result, the accuracy of the Detector device improved.
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10153266A DE10153266B4 (en) | 2000-11-27 | 2001-10-31 | pressure detector |
US09/995,020 US6604426B2 (en) | 2000-11-27 | 2001-11-27 | Variable capacitance pressure sensor |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10058836.0 | 2000-11-27 | ||
DE10058836 | 2000-11-27 | ||
DE10153266A DE10153266B4 (en) | 2000-11-27 | 2001-10-31 | pressure detector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10153266A1 DE10153266A1 (en) | 2005-02-17 |
DE10153266B4 true DE10153266B4 (en) | 2005-07-14 |
Family
ID=7664827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10153266A Expired - Fee Related DE10153266B4 (en) | 2000-11-27 | 2001-10-31 | pressure detector |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP3639554B2 (en) |
DE (1) | DE10153266B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008241717A (en) * | 2004-03-29 | 2008-10-09 | Sanyo Electric Co Ltd | Electrostatic capacitance-type pressure sensor, and heart rate/respiratory rate measuring device having the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20004248U1 (en) * | 2000-03-10 | 2000-07-06 | Wet Automotive Systems Ag | Pressure sensor |
-
2001
- 2001-10-31 DE DE10153266A patent/DE10153266B4/en not_active Expired - Fee Related
- 2001-11-22 JP JP2001357536A patent/JP3639554B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20004248U1 (en) * | 2000-03-10 | 2000-07-06 | Wet Automotive Systems Ag | Pressure sensor |
Also Published As
Publication number | Publication date |
---|---|
DE10153266A1 (en) | 2005-02-17 |
JP3639554B2 (en) | 2005-04-20 |
JP2002202208A (en) | 2002-07-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |