EP3231035A1 - Vorrichtung zur übertragung von signalen aus einem metall-gehäuse - Google Patents
Vorrichtung zur übertragung von signalen aus einem metall-gehäuseInfo
- Publication number
- EP3231035A1 EP3231035A1 EP15791280.9A EP15791280A EP3231035A1 EP 3231035 A1 EP3231035 A1 EP 3231035A1 EP 15791280 A EP15791280 A EP 15791280A EP 3231035 A1 EP3231035 A1 EP 3231035A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- secondary antenna
- antenna
- electromagnetic waves
- cable gland
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title description 4
- 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
- 210000004907 gland Anatomy 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004382 potting Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2233—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in consumption-meter devices, e.g. electricity, gas or water meters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/225—Supports; Mounting means by structural association with other equipment or articles used in level-measurement devices, e.g. for level gauge measurement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/36—Vertical arrangement of element with top loading
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
- H01Q1/1214—Supports; Mounting means for fastening a rigid aerial element through a wall
Definitions
- the invention relates to a device according to the preamble in claim 1.
- Process automation technology field devices are often used, which serve for the determination, optimization and / or influencing of process variables.
- sensors such as
- level gauges For example, level gauges, flow meters, pressure and temperature measuring devices, conductivity meters, etc., which the
- actuators such as valves or pumps, on the flow of a liquid in a pipe section or the level in one
- field devices are all devices that are used close to the process and that provide or process process-relevant information.
- field devices are thus also understood as remote I / Os (electrical interfaces), radio adapters or in general devices which are arranged on the field level.
- I / Os electrical interfaces
- radio adapters or in general devices which are arranged on the field level.
- a variety of such field devices is manufactured and sold by the company Endress + Hauser.
- RFID systems are used to identify field devices.
- An RFID system consists of a transponder, which is located in a housing and contains a distinctive code, and a reader for reading this identifier.
- An NFC system additionally allows an opposite information path and, for example, the transmission of one or more measured values of one or an interconnection of several field devices.
- a disadvantage of RFID and NFC transponders is that the conductive housing of the field devices for electromagnetic waves in the area necessary for RFID is substantially not permeable.
- the invention has for its object to provide a device which the transmission of RFID or NFC signals from a
- the object is achieved by the subject invention.
- the invention relates to a device for transmitting signals from at least one housing opening of an at least partially metallic housing by means of electromagnetic waves of at least one specific wavelength, comprising a arranged in the housing transmitting / receiving unit for generating and receiving the
- At least one primary antenna arranged in the housing for decoupling the generated electromagnetic waves of the transceiver unit and for coupling and transmitting received electromagnetic waves to the transceiver unit, a first secondary antenna for receiving the electromagnetic waves coupled out from the primary antenna, the first one
- a second secondary antenna for receiving the transmitted from outside the housing electromagnetic waves, wherein the second secondary antenna outside of the housing at the
- Housing opening is arranged, wherein between the first and second
- Secondary antenna a reflection point is arranged so that between the first and second secondary antenna, an impedance jump is made.
- the electromagnetic waves emitted by the primary antenna couple to the first secondary antenna within the housing and
- Transmitted secondary antenna outside of the housing and coupled out from the second secondary antenna.
- the housing opening has a
- Cable gland in particular a PG cable gland on.
- the cable gland is at least partially filled by a dielectric filling material, in particular a dielectric potting compound.
- the dielectric filler shields the radiation emitted from the first or second secondary antenna
- the filling material ensures a tightness of the housing
- the reflection point is designed as a sudden change from the diameter of the first to the diameter of the second secondary antenna.
- a sudden change in the diameter causes a change in the wavelength of the
- the reflection point is designed as a common antenna base of the first and second secondary antenna.
- the common antenna decouples the first from the second secondary antenna.
- the common antenna base is plate-shaped, wherein the antenna defines a first plane, wherein a housing opening having wall of the housing defines a second plane, and wherein the first plane and the second plane are identical.
- the first and / or second secondary antenna has / have a length which corresponds to an integer multiple of a quarter of at least one specific wavelength. This leads to a low-loss transmission from the first to the second secondary antenna and vice versa.
- the first and / or second secondary antenna has / have a length that corresponds to a quarter of at least one specific wavelength. This leads to a low-loss
- the wavelengths must be in an even relationship to each other.
- the first and / or second secondary antenna are each rounded off at an open end opposite the reflection point. In this way it is possible to generate the wavelengths of a frequency band that fit into the first and / or second secondary antenna and thereby achieve broadbandness.
- Fig. 1 shows a longitudinal section of a device for the transmission of
- FIG. 2 shows a schematic longitudinal section of a first or second
- FIG. 3 a side view of a PG cable gland in the
- FIG. 4 shows a side view of a housing of a field device with three different types of blind plugs
- 5 shows a schematic longitudinal section of a housing with outgoing and entering field lines of an electric field.
- Fig. 1 shows a longitudinal section of an apparatus 1 for transmitting electromagnetic waves from a metallic housing (not shown).
- a wall 13 of the housing has a housing opening 2, in which a cable gland 10 is arranged.
- Cable gland 10 is designed as a hollow cylinder and is arranged to a greater extent outside of the housing.
- a rubber seal 16 seals the cable gland 10 against the wall 13 waterproof.
- a plate-shaped antenna base 12 is arranged, which has a first and second side surface.
- a first side surface facing outwardly of the housing defines a first plane 14.
- An outer surface of the housing defines a second plane 15.
- the first and second planes 14, 15 may be identical. This is achieved by means of a filling material 1 1, which has an interior of the
- the filler 1 1 comprises a dielectric material, such as plastic, glass or ceramic.
- a first stabformige secondary antenna 7 (diameter about 1, 5 mm) is disposed on the first side surface of the antenna base 12 and points in the direction of the housing exterior.
- a second stabformige secondary antenna 8 is disposed on the second side surface of the antenna base 12 and points in the direction of the housing interior. In this way, the first and second secondary antennas 7, 8 have the antenna base 12 as a common antenna base 12.
- the antenna base 12 functions as a reflection point between the first and second secondary antennas 7, 8, so that a
- Impedance jump between the first and second secondary antenna 7, 8 is formed.
- the lengths of the first and second secondary antennas 7, 8 are chosen so that the lengths are multiples of one quarter of a
- the length of the first and second secondary antennae 7, 8 can be exactly one quarter of the
- electromagnetic waves of wavelength in a range 2.4 GHz ANT, ANT +, Bluetooth, WLAN
- ANT, ANT +, Bluetooth, WLAN particularly favorable.
- a good impedance matching of the first secondary antenna 7 to the second secondary antenna 8 is achieved by the use of a thick bolt as first and second secondary antenna 7, 8, respectively.
- Fig. 2 shows a schematic longitudinal section of a first or second secondary antenna 7 at a rounded open end.
- the open ends of the first and second secondary antennas are rounded, the lengths between the reflection point and the open ends of the first and second secondary antennas are different. This means that not only electromagnetic waves of a certain wavelength in the respective secondary antenna fit, but
- FIG. 3 shows a side view of a cable gland 10, which is designed as a PG gland, once in the exploded view and once in the assembled representation.
- the cable gland 10 has at an outer end prongs 17, which together with a
- housings of field meters usually have at least one housing opening to mount PG cable glands. Several housing openings offer the advantage that there are several ways the cables are in there
- Field device This is particularly important in installations in the USA, since the wiring usually has to be laid in a metal tube (armored tube) and these are very inflexible. Furthermore, a cascading of field measuring devices is possible hereby. This reduces the necessary cabling effort. In the devices are suitable, for example
- Bus systems are provided to transmit measurement data across other devices.
- the devices have connections for at least two cables.
- one of the unused cable glands is used to transmit electromagnetic waves. This has the advantage that the housing openings are already present in the existing housings and the housings do not need to be changed. Unused cable glands can be closed with a so-called blind plug
- FIG 4 shows a side view of a metallic housing of a field device with three different types of blind plugs 20 made of plastic.
- the blind plugs 20 are each on a metallic housing of the Automaticcel. Product series with the trade name Micropilot of the applicant assembled.
- Housing opening arranged a metallic housing, so represents the
- Housing opening for electromagnetic waves is a circular waveguide.
- the lower cutoff frequency of the transmitted through the housing opening is a circular waveguide.
- Transmission frequency by a factor of 2 ... 4 (with shielded cables significantly more).
- a passage through the housing opening is possible, but generally strongly attenuated and only at a 6 ... 10 times higher frequency (at a housing opening with 19 mm diameter from 600 GHz) well-permeable ,
- FIG. 5 shows a schematic longitudinal section of a housing 9 with outgoing and entering field lines 21 of an electric field.
- a field distribution of the electric field lines 21 explains the effect of how the signals by means of the electromagnetic waves to one of the housing opening. 2
- Fig. 6 shows a sketched longitudinal section of a first and second
- Secondary antenna 7, 8 form a standing wave. That is an integer multiple of a quarter of the wavelength of the transmitted
- electromagnetic wave must be the length 11 and 12 of the first and second Secondary antenna 7, 8 correspond.
- the first and second secondary antenna 7, 8 have different lengths 11 and 12.
Landscapes
- Details Of Aerials (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014118391.6A DE102014118391A1 (de) | 2014-12-11 | 2014-12-11 | Vorrichtung zur Übertragung von Signalen aus einem Metall-Gehäuse |
PCT/EP2015/075542 WO2016091481A1 (de) | 2014-12-11 | 2015-11-03 | Vorrichtung zur übertragung von signalen aus einem metall-gehäuse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3231035A1 true EP3231035A1 (de) | 2017-10-18 |
EP3231035B1 EP3231035B1 (de) | 2021-08-11 |
Family
ID=54478016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15791280.9A Active EP3231035B1 (de) | 2014-12-11 | 2015-11-03 | Vorrichtung zur übertragung von signalen aus einem metallgehäuse |
Country Status (5)
Country | Link |
---|---|
US (1) | US10236555B2 (de) |
EP (1) | EP3231035B1 (de) |
CN (1) | CN107004941B (de) |
DE (1) | DE102014118391A1 (de) |
WO (1) | WO2016091481A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018075697A1 (en) * | 2016-10-18 | 2018-04-26 | CAPE Industries, LLC | Cable gland and method and apparatus for earthing a cable |
US11011896B2 (en) | 2016-10-18 | 2021-05-18 | CAPE Industries, LLC | Cable gland for grounding a cable |
US11600976B2 (en) | 2016-10-18 | 2023-03-07 | CAPE Industries, LLC | Cable gland for grounding a cable and method of use |
DE102016120678A1 (de) | 2016-10-28 | 2018-05-03 | Endress+Hauser SE+Co. KG | Verfahren zum Herstellen eines Druckmittlersystems |
DE102017110597A1 (de) | 2017-05-16 | 2018-11-22 | Endress+Hauser SE+Co. KG | Feldgerät der Automatisierungstechnik |
DE102017121036A1 (de) | 2017-09-12 | 2019-03-14 | Endress+Hauser SE+Co. KG | Feldgerät mit drahtloser Sende-/Empfangseinheit |
DE102018105903A1 (de) * | 2018-03-14 | 2019-09-19 | Vega Grieshaber Kg | Feldgerät mit einem Metallgehäuse, einer durch eine Kabeldurchführung geführten Anschlussleitung und einem Funkmodul mit einer Antenne |
DE102018122423A1 (de) * | 2018-09-13 | 2020-03-19 | Endress+Hauser SE+Co. KG | Vorrichtung zur Übertragung von Signalen aus einem zumindest teilweise metallischen Gehäuse |
DE102019108359A1 (de) | 2019-03-30 | 2020-10-01 | Endress+Hauser SE+Co. KG | Vorrichtung zur Übertragung von Signalen aus einem zumindest teilweise metallischen für den Einsatz in einem explosionsgefährdeten Bereich ausgebildeten Gehäuse |
DE102019124704A1 (de) * | 2019-09-13 | 2021-03-18 | Endress+Hauser SE+Co. KG | Feldgerät der Automatisierungstechnik |
CN110761782B (zh) * | 2019-11-13 | 2024-02-09 | 中国石油天然气集团有限公司 | 一种用于地质导向的方位随钻核磁共振测井装置 |
DE102022124256A1 (de) | 2022-09-21 | 2024-03-21 | Endress+Hauser SE+Co. KG | System der Automatisierungstechnik |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453755A (en) * | 1992-01-23 | 1995-09-26 | Kabushiki Kaisha Yokowo | Circularly-polarized-wave flat antenna |
DE69923805T2 (de) * | 1998-04-28 | 2005-07-14 | Northrop Grumman Corp., Los Angeles | Keramik-Metall Durchführungen für Millimeterwellen |
US20050206530A1 (en) * | 2004-03-18 | 2005-09-22 | Cumming Daniel A | Solar powered radio frequency device within an energy sensor system |
US20140106665A1 (en) * | 2012-10-11 | 2014-04-17 | Rolls-Royce Plc | Wireless signal propagation apparatus |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3576578A (en) * | 1967-11-30 | 1971-04-27 | Sylvania Electric Prod | Dipole antenna in which one radiating element is formed by outer conductors of two distinct transmission lines having different characteristic impedances |
US5982327A (en) * | 1998-01-12 | 1999-11-09 | Motorola, Inc. | Adaptive array method, device, base station and subscriber unit |
DE19922606B4 (de) * | 1999-05-17 | 2004-07-22 | Vega Grieshaber Kg | Anordnung aus einem Hohlleiter und einer Antenne |
US6822611B1 (en) * | 2003-05-08 | 2004-11-23 | Motorola, Inc. | Wideband internal antenna for communication device |
US6995715B2 (en) * | 2003-07-30 | 2006-02-07 | Sony Ericsson Mobile Communications Ab | Antennas integrated with acoustic guide channels and wireless terminals incorporating the same |
JP2005075301A (ja) * | 2003-09-03 | 2005-03-24 | Mitsubishi Electric Corp | 情報処理装置 |
US7482981B2 (en) * | 2004-07-29 | 2009-01-27 | Interdigital Technology Corporation | Corona wind antennas and related methods |
US7277058B2 (en) * | 2004-12-30 | 2007-10-02 | Motorola, Inc. | Wireless communication device antenna for improved communication with a satellite |
US7453393B2 (en) * | 2005-01-18 | 2008-11-18 | Siemens Milltronics Process Instruments Inc. | Coupler with waveguide transition for an antenna in a radar-based level measurement system |
US7481672B2 (en) * | 2005-07-21 | 2009-01-27 | Rosemount Tank Radar Ab | Dielectric connector, DC-insulating through-connection and electronic system |
US7479927B2 (en) * | 2005-12-30 | 2009-01-20 | Motorola, Inc. | Radio frequency antenna system |
US7548208B2 (en) * | 2006-02-24 | 2009-06-16 | Palm, Inc. | Internal diversity antenna architecture |
DE102006030965A1 (de) | 2006-07-03 | 2008-01-10 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Ermittlung und/oder Überwachung des Füllstandes eines Mediums |
US7453406B2 (en) * | 2006-12-29 | 2008-11-18 | Motorola, Inc. | Low interference internal antenna system for wireless devices |
US8064960B2 (en) * | 2008-12-29 | 2011-11-22 | General Motors Llc | Method of managing multiple vehicle antennas |
JP2011133030A (ja) * | 2009-12-24 | 2011-07-07 | Neomax Material:Kk | 電波受信機器用のねじ、その製造方法及び電波受信機器 |
US8937550B2 (en) * | 2010-04-14 | 2015-01-20 | Eagile, Inc. | Container seal with radio frequency identification tag, and method of making same |
US8800363B2 (en) * | 2010-12-02 | 2014-08-12 | Rosemount Tank Radar Ab | Radar level gauge with dielectric rod connection |
DE102010063167B4 (de) * | 2010-12-15 | 2022-02-24 | Endress+Hauser SE+Co. KG | Mit hochfrequenten Mikrowellen arbeitendes Füllstandsmessgerät |
DE102011081517A1 (de) * | 2011-08-24 | 2013-02-28 | Endress + Hauser Gmbh + Co. Kg | Feldgerät für die Automatisierungstechnik |
-
2014
- 2014-12-11 DE DE102014118391.6A patent/DE102014118391A1/de not_active Withdrawn
-
2015
- 2015-11-03 WO PCT/EP2015/075542 patent/WO2016091481A1/de active Application Filing
- 2015-11-03 US US15/534,724 patent/US10236555B2/en active Active
- 2015-11-03 EP EP15791280.9A patent/EP3231035B1/de active Active
- 2015-11-03 CN CN201580066804.4A patent/CN107004941B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453755A (en) * | 1992-01-23 | 1995-09-26 | Kabushiki Kaisha Yokowo | Circularly-polarized-wave flat antenna |
DE69923805T2 (de) * | 1998-04-28 | 2005-07-14 | Northrop Grumman Corp., Los Angeles | Keramik-Metall Durchführungen für Millimeterwellen |
US20050206530A1 (en) * | 2004-03-18 | 2005-09-22 | Cumming Daniel A | Solar powered radio frequency device within an energy sensor system |
US20140106665A1 (en) * | 2012-10-11 | 2014-04-17 | Rolls-Royce Plc | Wireless signal propagation apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of WO2016091481A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2016091481A1 (de) | 2016-06-16 |
DE102014118391A1 (de) | 2016-06-16 |
CN107004941B (zh) | 2019-11-22 |
CN107004941A (zh) | 2017-08-01 |
EP3231035B1 (de) | 2021-08-11 |
US10236555B2 (en) | 2019-03-19 |
US20180034129A1 (en) | 2018-02-01 |
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