CH618050A5 - Device for transmitting information by magnetic induction - Google Patents
Device for transmitting information by magnetic induction Download PDFInfo
- Publication number
- CH618050A5 CH618050A5 CH801577A CH801577A CH618050A5 CH 618050 A5 CH618050 A5 CH 618050A5 CH 801577 A CH801577 A CH 801577A CH 801577 A CH801577 A CH 801577A CH 618050 A5 CH618050 A5 CH 618050A5
- Authority
- CH
- Switzerland
- Prior art keywords
- housing
- winding
- ring
- windings
- ferromagnetic metal
- Prior art date
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 24
- 230000006698 induction Effects 0.000 title claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
Classifications
-
- 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
- H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C17/00—Fuze-setting apparatus
- F42C17/04—Fuze-setting apparatus for electric fuzes
-
- 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
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
- H04B5/266—One coil at each side, e.g. with primary and secondary coils
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The device makes it possible to transmit information by magnetic induction between two parts brought close together magnetically. A winding (1) generating an alternating magnetic field is arranged in a housing (2) carrying a coaxial non-ferromagnetic metal ring (11). The receiver winding (8) is arranged in a housing (6) and is surrounded by a non-ferromagnetic metal ring (9). The rings (9, 11) constitute short-circuit turns which promote the magnetic coupling between the windings (1, 8). <IMAGE>
Description
**ATTENTION** debut du champ DESC peut contenir fin de CLMS **.
REVENDICATION
Dispositif pour transmettre des informations par induction magnétique, comprenant au moins deux enroulements (1,8) sensiblement coaxiaux, l'un (1) étant susceptible d'engendrer un champ magnétique alternatif, et l'autre (8) de capter ce champ, caractérisé en ce que chacun des enroulements (1, 8) est disposé dans un boîtier (2, 6) qui lui est propre, chaque boîtier (2, 6) portant un anneau (9, 11) en métal non ferromagnétique disposé coaxialement par rapport à l'enroulement de ce boîtier.
L'invention se rapporte à un dispositif pour transmettre des informations par induction magnétique, comprenant au moins deux enroulements sensiblement coaxiaux, l'un étant susceptible d'engendrer un champ magnétique alternatif, et l'autre de capter ce champ.
Un tel dispositif est décrit dans le brevet suisse no. 607 497, dans lequel il a été prévu que l'anneau en métal non ferromagnétique est disposé dans le boîtier. Il se trouve par conséquent relativement proche d'un enroulement, mais assez éloigné de l'autre, de sorte que des fuites du flux magnétique subsistent lorsque chacun des enroulements est disposé dans un boîtier indépendant de l'autre.
La présente invention a pour but de diminuer le plus possible les fuites du flux magnétique. A cet effet, le dispositif précité est caractérisé en ce que chacun des enroulements est disposé dans un boîtier qui lui est propre, chaque boîtier portant un anneau en métal non ferromagnétique disposé coaxialement par rapport à l'enroulement de ce boîtier.
Le dessin annexé représente, schématiquement et à titre d'exemple, une forme d'exécution du dispositif objet de l'ìnven- tion.
La fig. 1 est une vue en coupe d'un dispositif émetteur d'informations.
La fig. 2 est une vue en coupe d'un dispositif capteur d'informations.
Le dispositif émetteur comprend un enroulement 1 agencé à l'intérieur d'un boîtier 2 de forme annulaire, ce boîtier 2 étant fixé à un manche 3 et présentant un trou conique 4. Le manche 3 porte un dispositif 5 contenant les circuits électriques nécessaires pour la fourniture du signal appliqué à l'enroulement 1.
Le trou conique 4 présente une gorge annulaire dans laquelle est encastré un anneau il en métal non ferromagnétique. Cet anneau peut avantageusement être constitué en un métal bon conducteur de l'électricité, par exemple en cuivre.
Le dispositif capteur comprend, dans un boîtier 6, une bobine 7 en matière ferromagnétique portant un enroulement 8.
Un anneau 9 en métal non ferromagnétique coaxial avec la bobine 7 est fixé au boîtier sensiblement à la même hauteur que ladite bobine 7. Un circuit électronique 10, représenté de façon très schématique, traite les informations captées par l'enroulement 8.
La forme du boîtier 6 correspond au trou conique 4 boîtier 2, de sorte que le boîtier 2 peut être engagé sur le boîtier 6.
L'enroulement 1 vient alors autour de l'enroulement 8, l'anneau 9 étant situé entre les deux enroulements.
Ces anneaux 9 et 11 se comportent alors chacun comme une spire en court-circuit entre les deux enroulements d'un couplage magnétique. Le courant passant dans l'enroulement 1 induit dans chaque anneau un courant de court-circuit qui engendre un champ magnétique secondaire de sens général opposé à celui qui engendre ce courant de court-circuit. Ce champ magnétique secondaire a pour effet de dévier les lignes de force du champ primaire vers l'axe des anneaux 9 et 11, et donc de les concentrer dans l'enroulement 8.
Cette configuration particulière a donc pour effet d'augmenter l'intensité du champ magnétique auquel est exposé l'enroulement capteur en évitant au maximum des fuites.
** ATTENTION ** start of the DESC field may contain end of CLMS **.
CLAIM
Device for transmitting information by magnetic induction, comprising at least two substantially coaxial windings (1,8), one (1) being capable of generating an alternating magnetic field, and the other (8) of capturing this field, characterized in that each of the windings (1, 8) is arranged in its own housing (2, 6), each housing (2, 6) carrying a ring (9, 11) of non-ferromagnetic metal arranged coaxially with respect to to the winding of this box.
The invention relates to a device for transmitting information by magnetic induction, comprising at least two substantially coaxial windings, one being capable of generating an alternating magnetic field, and the other of picking up this field.
Such a device is described in Swiss patent no. 607 497, in which it has been provided that the non-ferromagnetic metal ring is disposed in the housing. It is therefore relatively close to one winding, but quite distant from the other, so that leakage from the magnetic flux remains when each of the windings is placed in a housing independent of the other.
The object of the present invention is to minimize the leakage of the magnetic flux. To this end, the aforementioned device is characterized in that each of the windings is arranged in a housing which is specific to it, each housing carrying a ring of non-ferromagnetic metal arranged coaxially with respect to the winding of this housing.
The accompanying drawing shows, schematically and by way of example, an embodiment of the device which is the subject of the invention.
Fig. 1 is a sectional view of an information transmitter device.
Fig. 2 is a sectional view of an information sensor device.
The transmitter device comprises a winding 1 arranged inside a box 2 of annular shape, this box 2 being fixed to a handle 3 and having a conical hole 4. The handle 3 carries a device 5 containing the electrical circuits necessary for the supply of the signal applied to the winding 1.
The conical hole 4 has an annular groove in which is embedded a ring il of non-ferromagnetic metal. This ring can advantageously be made of a metal which is a good conductor of electricity, for example copper.
The sensor device comprises, in a housing 6, a coil 7 made of ferromagnetic material carrying a winding 8.
A ring 9 made of non-ferromagnetic metal coaxial with the coil 7 is fixed to the housing substantially at the same height as said coil 7. An electronic circuit 10, shown very schematically, processes the information received by the winding 8.
The shape of the housing 6 corresponds to the conical hole 4 housing 2, so that the housing 2 can be engaged on the housing 6.
The winding 1 then comes around the winding 8, the ring 9 being located between the two windings.
These rings 9 and 11 then each behave like a short-circuited turn between the two windings of a magnetic coupling. The current passing through the winding 1 induces in each ring a short-circuit current which generates a secondary magnetic field of general direction opposite to that which generates this short-circuit current. This secondary magnetic field has the effect of deflecting the lines of force of the primary field towards the axis of the rings 9 and 11, and therefore of concentrating them in the winding 8.
This particular configuration therefore has the effect of increasing the intensity of the magnetic field to which the sensor winding is exposed while preventing leaks as much as possible.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7607312,A NL171837C (en) | 1975-07-09 | 1976-07-02 | TEMPERATURE DEVICE FOR TRANSMISSION OF INFORMATION BY MAGNETIC INDUCTION. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH618050A5 true CH618050A5 (en) | 1980-06-30 |
Family
ID=19826512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH801577A CH618050A5 (en) | 1976-07-02 | 1977-06-29 | Device for transmitting information by magnetic induction |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH618050A5 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0467055A1 (en) * | 1990-07-19 | 1992-01-22 | Oerlikon-Contraves AG | Receiving coil for the programmable fuse of a projectile |
| WO2002049233A1 (en) * | 2000-12-15 | 2002-06-20 | Flight Refuelling Limited | Coupling signals to flowlines |
-
1977
- 1977-06-29 CH CH801577A patent/CH618050A5/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0467055A1 (en) * | 1990-07-19 | 1992-01-22 | Oerlikon-Contraves AG | Receiving coil for the programmable fuse of a projectile |
| US5117732A (en) * | 1990-07-19 | 1992-06-02 | Oerlikon-Contraves Ag | Receiver coil for a programmable projectile fuze |
| WO2002049233A1 (en) * | 2000-12-15 | 2002-06-20 | Flight Refuelling Limited | Coupling signals to flowlines |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3924115A (en) | Electromagnetic pick up tool with built-in light | |
| FR2870350A1 (en) | DEVICE FOR MEASURING AN ELECTRICAL CURRENT, CURRENT SENSOR, ELECTRICAL SENSOR AND CUTTING DEVICE COMPRISING SUCH A MEASURING DEVICE | |
| KR970024373A (en) | Retractable Antenna System (RETRACTABEL ANTENNA SYSTEM) | |
| KR860002850A (en) | Improved breaker panel with alarm system | |
| US2878342A (en) | Magnetic chip detector | |
| EP0933640A2 (en) | Power supply comprising a current sensor | |
| CH618050A5 (en) | Device for transmitting information by magnetic induction | |
| ES2123846T3 (en) | POSITION TRANSMITTER WITH DATA EVALUATION CIRCUIT. | |
| FR2912512B3 (en) | DEVICE FOR MEASURING ELECTRICAL SIZES FOR ENERGY TRANSPORT LINES. | |
| FR2737922A1 (en) | CURRENT SENSOR AND ELECTRICAL DEVICE COMPRISING SAME | |
| DK0379902T3 (en) | Device for inductive connection for message processing | |
| US2290419A (en) | Tackle box | |
| US5025429A (en) | Electric power supply device for hand with load | |
| JP2019501614A5 (en) | ||
| JPH03194881A (en) | Induction heater | |
| FR2501559A1 (en) | CONDUCTIVE PART CONTACT DETECTION APPARATUS FOR USE, FOR EXAMPLE, IN A MACHINE TOOL | |
| FR2462762A1 (en) | Short circuit ring transducer with laminated iron core - has plate end electrically conducting screening to suppress stray field effects | |
| KR960014613A (en) | Device scanning device and internal combustion piston engine with the device | |
| FR2662799A1 (en) | DEVICE FOR MONITORING THE TEMPERATURE OF A MOVING CONSTRUCTION ELEMENT, PARTICULARLY A FRICTION CLUTCH. | |
| JP7063243B2 (en) | Proximity sensor manufacturing method | |
| FR2682217A1 (en) | Multi-ratio unplugable current transformer | |
| JPH04115163A (en) | Apparatus for detecting moving body | |
| WO2020100576A1 (en) | Proximity sensor | |
| FR2611895A1 (en) | VARIABLE INDUCTANCE TRANSDUCER | |
| FR2622330A1 (en) | Portable object comprising an electronic circuit for storing data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |