EP0732011A1 - Cable-less data-enquiry method and device - Google Patents
Cable-less data-enquiry method and deviceInfo
- Publication number
- EP0732011A1 EP0732011A1 EP95928976A EP95928976A EP0732011A1 EP 0732011 A1 EP0732011 A1 EP 0732011A1 EP 95928976 A EP95928976 A EP 95928976A EP 95928976 A EP95928976 A EP 95928976A EP 0732011 A1 EP0732011 A1 EP 0732011A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitance
- inductance
- station
- conductive substance
- electrically conductive
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 18
- 239000002966 varnish Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000004922 lacquer Substances 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 239000002985 plastic film Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000004044 response Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/22—Capacitive coupling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
Definitions
- the invention relates to a device for a device for wireless information retrieval.
- an answering station supplies the polling station with the necessary energy and the corresponding information by means of a wireless polling signal.
- This includes, for example, a device that is supplied with the necessary energy wirelessly via a reading device and also wirelessly transmits the information to an interrogation station, the reading station being able to be moved over a predetermined distance during the reading process.
- the invention includes a method for producing such a device.
- a portable, field-programmable detector plate has been described in European patent application 0441 237.
- an inductance is used for energy transmission and also for sending the data.
- a field trial is also programming possible.
- the data are transmitted by pulse pause modulation and digitally evaluated.
- the object of the invention is to provide a device for energy transmission and for reading and writing data, which is very simple and inexpensive to be mass-produced inexpensively.
- an inductance which is provided with a carrier.
- This inductance can, for example, be wound, etched or also vapor-deposited onto the corresponding carrier material.
- a self-supporting inductor instead of the carrier, which is so dimensionally stable as a coil that it does not lose its shape even under mechanical stress.
- a high-resistance but conductive substance is then applied to this inductance.
- This substance represents the capacitor surfaces and is therefore to be produced from two geometrically independent structures which are not connected to one another but are located one inside the other. It is absolutely necessary for the conductive substance that its electrical resistance value is very high-impedance, because this does not affect the magnetic fields of the inductance.
- this substance must also be so low-resistance that a perfect capacitive transmission of information is guaranteed.
- the capacitor areas lie directly above the inductance, which makes it clear that the conductive substance must not have a low resistance, since otherwise it would represent a short circuit in itself and also for the radiation field of the inductance.
- This close coupling of the inductance and the capacitance in the smallest space makes it possible, for example, to produce a response station which works according to the transponder system, can communicate with the stationary station and is also inexpensive to produce, namely by virtue of the fact that a thin credit card format, for example built response station can be realized.
- the capacitor surfaces can be placed one inside the other.
- a carbon varnish for example, can be used as the conductive substance, which is very high-resistance and therefore does not represent a short-circuit ring for the capacitance.
- the carbon varnish is to be understood as a conductive varnish, which is preferably produced as a two-component screen printing varnish.
- This carbon-conductive varnish has been enriched with a special carbon black and / or a special type of graphite, so that it has sufficient electrical conductivity. In addition to the conductivity, such a lacquer also has a very high mechanical strength.
- Such a lacquer can also be used for soldering tapes, so that contacting does not pose any difficulties, and likewise no changes in the resistance value can be determined after hot tinning.
- it can be enriched, for example, with a two-component insulating paste. Such an approach does not influence the inductance. Capacitive feeding of the device is therefore possible.
- a device of the type described enables capacitive data transmission in any position with the simultaneous advantage of the high reading distance. It is possible, for example, to use full-duplex operation with such a device be carried out, ie with the transmission of energy it is also possible to query and send data.
- inductance and capacitor are virtually in one plane or are placed directly next to one another.
- in one plane means that when they are designed as a thin element without a corresponding support, they lie directly in front of one another.
- a conductive substance e.g. a carbon varnish or any other conductive substance because it has a very high resistance to the existing inductance and is sufficiently conductive as a capacitive surface.
- a resist varnish is applied by placing stencils at the locations of the device where a capacitor surface is to be produced.
- the varnish can be applied by spraying, brushing or printing (screen printing).
- the thickness of the order also determines the resistance value.
- all other high-resistance materials can be used, which can be applied by the aforementioned manner.
- it is also possible to use correspondingly conductive plastics or foils, the resistance value of which is correspondingly high-ohmic and at the same time can be used as a capacitive material.
- the size of the capacitive areas depends on the application, but the geometric shape of these areas is completely independent and can therefore be easily adapted to the requirements of the market.
- the capacitor surfaces can have an annular or circular shape such that they lie inside one another.
- the capacitor areas do not have to be closed, they can also be open at one point, only in such a case a larger active area is required for the capacitance.
- Figure 1 a circular and annular capacitor surface
- Figure 2 shows a section AA through this capacitor surface according to Figure
- Figure 4 a section B-B through the capacitor surfaces of Figure 3 with inductance
- Figure 5 shows a section through the arrangement of the capacitor surface
- FIG. 1 shows a circular capacitor area 2, around which a second capacitor area 2 is placed in an annular manner. There is an intermediate space between the two capacitor surfaces 1 and 2, which acts as a dielectric 15 between the plates.
- the capacitance 12 created in this way is applied as described above by a high-resistance conductive substance in conjunction with the corresponding method.
- the contacts required for connecting the connecting lines are not shown in this illustration.
- the capacitor areas 1 and 2 are located on a carrier 3 on its side 11.
- This carrier 3 can be, for example, a film or some other suitable electrically non-conductive material.
- the inductor 4 is located on the opposite side 10 of the carrier 3. As previously described, this inductor can be positively connected to the carrier 3 by etching, vapor deposition or as a winding body.
- This type of representation makes it clear that there is a very close coupling, in particular, between the capacitor 12 with its capacitor areas 1 and 2 and the capacitance 4. However, this close coupling is only possible insofar as the capacitor surfaces 1 and 2 consist of a high-resistance conductive substance. If this were not the case, the magnetic field of the inductor would be short-circuited.
- FIG. 1 A variant of a capacitor is shown in FIG.
- a capacitance 14 is formed from capacitor areas 5 and 6, which are located in the latter If there is no short circuit in each case. Rather, an interruption is present at any point in the annular capacitor surface 5. Furthermore, the inner capacitor surface 6 separated by the dielectric 15 is likewise of annular design and also has an interruption 14 at any point. If the capacitance 14 is formed in the manner described above, however, larger areas are necessary for a correspondingly equivalent capacitance, as described in FIG. 1.
- FIG. 4 shows in section B-B of FIG. 3 that the capacitance 14 has been applied directly to the inductor 4. This is possible if the inductor 4 is a body which is stable in itself and which allows direct application of the high-resistance conductive substance.
- a circuit 9 available for processing information or for storing information can, as shown in FIG. 5, be used with appropriate placement within the inductor.
- the capacitor areas 1 and 2 on a carrier 3 are closely related to the inductance 8.
- the contacting of the capacitor surfaces 1 and 2 by the carrier 3 can be made directly with the circuit 9.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4432324 | 1994-09-12 | ||
DE4432324A DE4432324A1 (en) | 1994-09-13 | 1994-09-13 | Device for a device for wireless information retrieval and method for producing the device |
PCT/DE1995/001127 WO1996008880A1 (en) | 1994-09-12 | 1995-08-25 | Cable-less data-enquiry method and device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0732011A1 true EP0732011A1 (en) | 1996-09-18 |
Family
ID=6527941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95928976A Withdrawn EP0732011A1 (en) | 1994-09-12 | 1995-08-25 | Cable-less data-enquiry method and device |
Country Status (11)
Country | Link |
---|---|
US (1) | US5841122A (en) |
EP (1) | EP0732011A1 (en) |
CN (1) | CN1134766A (en) |
CZ (1) | CZ285611B6 (en) |
DE (1) | DE4432324A1 (en) |
ES (1) | ES2090002T1 (en) |
FI (1) | FI962006A (en) |
HU (1) | HUT76003A (en) |
PL (1) | PL315117A1 (en) |
SK (1) | SK59696A3 (en) |
WO (1) | WO1996008880A1 (en) |
Cited By (1)
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EP1179597A1 (en) * | 2000-08-11 | 2002-02-13 | Ajinomoto Co., Ltd. | Method for producing threonine and isoleucine |
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US10361802B1 (en) | 1999-02-01 | 2019-07-23 | Blanding Hovenweep, Llc | Adaptive pattern recognition based control system and method |
US8015597B2 (en) * | 1995-10-02 | 2011-09-06 | Corestreet, Ltd. | Disseminating additional data used for controlling access |
US7716486B2 (en) * | 1995-10-02 | 2010-05-11 | Corestreet, Ltd. | Controlling group access to doors |
US7600129B2 (en) * | 1995-10-02 | 2009-10-06 | Corestreet, Ltd. | Controlling access using additional data |
US7822989B2 (en) * | 1995-10-02 | 2010-10-26 | Corestreet, Ltd. | Controlling access to an area |
US8261319B2 (en) | 1995-10-24 | 2012-09-04 | Corestreet, Ltd. | Logging access attempts to an area |
DE19614914A1 (en) * | 1996-04-16 | 1997-10-23 | Telesensomatic Gmbh | Transponder arrangement with single- or multi-layer integrated circuit |
DE29618904U1 (en) * | 1996-10-30 | 1997-07-24 | Siemens AG, 80333 München | Transmitting and receiving device for electromagnetic data transmission |
JPH11175254A (en) * | 1997-12-12 | 1999-07-02 | Fujitsu Ltd | Coordinate input device, pad used therefor and communication method |
JP2000172793A (en) * | 1998-12-04 | 2000-06-23 | Hitachi Maxell Ltd | Reader and system for noncontact type information storage medium |
US6289237B1 (en) | 1998-12-22 | 2001-09-11 | University Of Pittsburgh Of The Commonwealth System Of Higher Education | Apparatus for energizing a remote station and related method |
US6615074B2 (en) * | 1998-12-22 | 2003-09-02 | University Of Pittsburgh Of The Commonwealth System Of Higher Education | Apparatus for energizing a remote station and related method |
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US6362972B1 (en) | 2000-04-13 | 2002-03-26 | Molex Incorporated | Contactless interconnection system |
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US8583027B2 (en) | 2000-10-26 | 2013-11-12 | Front Row Technologies, Llc | Methods and systems for authorizing computing devices for receipt of venue-based data based on the location of a user |
US7796162B2 (en) * | 2000-10-26 | 2010-09-14 | Front Row Technologies, Llc | Providing multiple synchronized camera views for broadcast from a live venue activity to remote viewers |
US7782363B2 (en) | 2000-06-27 | 2010-08-24 | Front Row Technologies, Llc | Providing multiple video perspectives of activities through a data network to a remote multimedia server for selective display by remote viewing audiences |
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FR2815176B1 (en) * | 2000-10-11 | 2003-01-10 | A S K | SPIRAL TRANSMISSION AND / OR RECEPTION ANTENNA WITH CUT-OFFS |
AUPR188600A0 (en) * | 2000-12-05 | 2001-01-04 | Vfj Technology Pty Limited | A smart token and reader device |
EP1372602B1 (en) | 2001-01-09 | 2007-04-18 | Microchips, Inc. | Flexible microchip devices for ophthalmic and other applications |
US7181017B1 (en) | 2001-03-23 | 2007-02-20 | David Felsher | System and method for secure three-party communications |
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US6856291B2 (en) * | 2002-08-15 | 2005-02-15 | University Of Pittsburgh- Of The Commonwealth System Of Higher Education | Energy harvesting circuits and associated methods |
WO2004034617A1 (en) | 2002-10-07 | 2004-04-22 | Immersion Entertainment, Llc | System and method for providing event spectators with audio/video signals pertaining to remote events |
US9818136B1 (en) | 2003-02-05 | 2017-11-14 | Steven M. Hoffberg | System and method for determining contingent relevance |
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-
1994
- 1994-09-13 DE DE4432324A patent/DE4432324A1/en not_active Withdrawn
-
1995
- 1995-08-25 ES ES95928976T patent/ES2090002T1/en active Pending
- 1995-08-25 EP EP95928976A patent/EP0732011A1/en not_active Withdrawn
- 1995-08-25 HU HU9600991A patent/HUT76003A/en unknown
- 1995-08-25 PL PL95315117A patent/PL315117A1/en unknown
- 1995-08-25 WO PCT/DE1995/001127 patent/WO1996008880A1/en not_active Application Discontinuation
- 1995-08-25 CZ CZ961384A patent/CZ285611B6/en not_active IP Right Cessation
- 1995-08-25 CN CN95190814.6A patent/CN1134766A/en active Pending
- 1995-08-25 SK SK596-96A patent/SK59696A3/en unknown
-
1996
- 1996-05-10 FI FI962006A patent/FI962006A/en unknown
- 1996-05-10 US US08/644,537 patent/US5841122A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9608880A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1179597A1 (en) * | 2000-08-11 | 2002-02-13 | Ajinomoto Co., Ltd. | Method for producing threonine and isoleucine |
Also Published As
Publication number | Publication date |
---|---|
DE4432324A1 (en) | 1996-03-14 |
HUT76003A (en) | 1997-06-30 |
ES2090002T1 (en) | 1996-10-16 |
FI962006A0 (en) | 1996-05-10 |
PL315117A1 (en) | 1996-10-14 |
FI962006A (en) | 1996-05-10 |
US5841122A (en) | 1998-11-24 |
SK59696A3 (en) | 1998-07-08 |
CN1134766A (en) | 1996-10-30 |
CZ138496A3 (en) | 1997-04-16 |
HU9600991D0 (en) | 1996-06-28 |
CZ285611B6 (en) | 1999-09-15 |
WO1996008880A1 (en) | 1996-03-21 |
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