WO2007028361A2 - Appareil d'acces wlan a utiliser dans des excavations souterraines exposees a des gaz - Google Patents

Appareil d'acces wlan a utiliser dans des excavations souterraines exposees a des gaz Download PDF

Info

Publication number
WO2007028361A2
WO2007028361A2 PCT/DE2006/001533 DE2006001533W WO2007028361A2 WO 2007028361 A2 WO2007028361 A2 WO 2007028361A2 DE 2006001533 W DE2006001533 W DE 2006001533W WO 2007028361 A2 WO2007028361 A2 WO 2007028361A2
Authority
WO
WIPO (PCT)
Prior art keywords
wlan access
access device
central unit
standard
intrinsically safe
Prior art date
Application number
PCT/DE2006/001533
Other languages
German (de)
English (en)
Other versions
WO2007028361A3 (fr
Inventor
Ingo Nägeler
Original Assignee
Rag Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rag Aktiengesellschaft filed Critical Rag Aktiengesellschaft
Publication of WO2007028361A2 publication Critical patent/WO2007028361A2/fr
Publication of WO2007028361A3 publication Critical patent/WO2007028361A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F9/00—Devices preventing sparking of machines or apparatus
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Definitions

  • WLAN access device for use in gas-prone mine buildings
  • WLAN wireless LAN
  • Hardware components are in many forms at low prices on the market.
  • This infrastructure consists of so-called WLAN access points, which represent the stationary infrastructure (base station) for mobile systems (intrinsically safe pocket PC's, machines with WLAN communication etc.) underground.
  • the invention is therefore based on the object to develop a WLAN access device that is constructed so that even with rapid changes in the underlying technology of the WLAN and innovations can reflect promptly in such a device, without a complete re-registration of the device is required ,
  • the system according to the invention consists of two groups of functional components, namely once from the functional groups arranged in the central device and, secondly, from the intrinsically safe periphery including the power supply.
  • the functional modules arranged in the central device consist of one or more standard WLAN access points with one or more frequency ranges, a standard Ethernet switch (if this is not already integrated in the standard WLAN access point), one or more several media converters for converting the internally used electrical Ethernet signal into an optical signal for use in the stationary network infrastructure of the mine, protection circuits for power supply and antennas and other optinal modules for additional functions.
  • the power supply can be accommodated either as a separate module or within the central unit in the device.
  • the components within the central unit are executed within an intrinsically safe system in a special type of protection (eg encapsulation, sand encapsulation) according to ATEX and approved accordingly.
  • a special type of protection eg encapsulation, sand encapsulation
  • all modules not originally classified as intrinsically safe are included in the potting or encapsulation space, which means that in many cases standard modules can be used. This creates the with regard to the technology-relevant hardware necessary flexibility while minimizing the costs and the approval-relevant effort.
  • Indications and indications are transmitted to the outside of the encapsulated devices via electrically uncritical media, e.g. LEDs are displayed on the surface of the potting compound by means of light guide blocks or fibers.
  • the device is used as an intrinsically safe system, if necessary together with intrinsically safe standard power supplies, whereby the power supply can alternatively also be installed directly in the device.
  • the possibility associated with this type of device architecture to be able to integrate further additional functions (see above) also with standard modules into the encapsulation space of the device.
  • localization functions for material can be implemented inexpensively by, for example, integrating an ID-TAG reader or an RFID reader directly into the access point. Passing material can then be detected by the infrastructure (the WLAN access point) and forwarded to central computer systems.
  • the power supply can be equipped with a back-up battery or a rechargeable battery in order to be able to maintain operation even during a power cut, eg due to the occurrence of an explosive gas mixture ("M1" approval).
  • various externally connectable antennas can be used. It also uses standard products that meet the harsh requirements of use in underground environments.
  • the electrical protection of the antennas and the device against inadmissible sparking occurs through protective circuits at the antenna outputs of the access point in the inner encapsulation space of the device.
  • These protective circuits are carried out either by capacitors or in the form of transformers, which are etched in compliance with the creepage distances and clearances directly on a printed circuit board.
  • the antennas themselves need only meet the appropriate requirements in terms of material selection and stability. However, they are part of the approval as standard components.
  • a particular form of media converter is selected by either performing the entire media converter intrinsically safe or running and allowing it as a transceiver module itself as an intrinsically safe component.
  • the transceiver module is mounted outside the potting space above the surface of the potting compound.
  • This intrinsically safe module mainly contains the actual transceiver, possibly together with other intrinsically safe components (eg LED's etc.).
  • the module is connected to the arranged in the Vergussraum motherboard of the media converter.
  • the potted motherboard also contains the possibly necessary protective circuits.
  • the actual transceiver is thus located in the outer space and the optical connections can be used without the risk of damage by the potting compound.
  • the downhole wireless access device described here is the stationary key component of the wireless communication system. It is a combination of Ethernet switch, wireless LAN access point and media converters for external connection to optical fiber based Ethernet. It therefore fulfills a double function as an infrastructure component in the fiber-optic network and at the same time as a stationary WLAN access device. Additional switches can thus be largely dispensed with with appropriate network design in the underground fiber optic network.
  • the communication according to IEEE802.11A is additionally included, whereby different communication requirements can be handled on two physically separate frequency bands. This, together with software engineering measures, is particularly important for the simultaneous use of intranet communication and automated machines.
  • the device can be used at various points in the network topology:
  • Two external connections are available for connecting the external antennas (primary antenna and secondary antenna).
  • the device is approved with different antennas to achieve maximum range in different conditions.
  • Sketch 2 partially intrinsically safe media converter in the access point housing.
  • Sketch 3 Arrangement example of networked WLAN access devices
  • the reference numeral 10 denotes the central unit of the WLAN access device according to the invention, which is generally provided with the reference numeral 1.
  • a standard WLAN access point with a corresponding frequency range is arranged in the present case and provided with the reference numeral 3. It is associated with a standard Ethernet switch 4.
  • it can also Several standard wireless access points with multiple Frequnez Schemeen and integrated standard Ethernet switch be provided.
  • one or more media converters (7) for converting the internally used electrical Ethernet signal into an optical signal for use in the stationary network infrastructure of the mine are provided in the central unit.
  • External antennas 8 are connected to arranged within the central unit protective circuits 5, which may also be associated with the power supply 2.
  • Reference numeral 6 designates further optional assemblies. For example, this can be used to inexpensively implement localization functions for material, for example by integrating an ID-TAG reader or an RFID reader directly into the access point. Passing material can then be recognized by the infrastructure and forwarded to central computer systems.
  • the reference numeral 9 designates, for example, optical waveguides which transport the electrical signals converted by the media converters via the transceivers 7 into optical signals.
  • a particular form of media converter (7) is chosen by either performing the entire media converter intrinsically safe or only the transceiver module (12) itself is designed and approved as an intrinsically safe component.
  • transceiver module (12) is mounted outside the potting space above the surface of potting compound 14.
  • This intrinsically safe assembly mainly contains the actual transceiver 13, optionally together with other intrinsically safe components (e.g., LED's, etc.).
  • the module is connected to the main circuit board of the media converter 11 arranged in the potting space (central processing unit) 10.
  • the potted motherboard 11 also contains the possibly necessary protective circuits.
  • the actual transceiver is thus located in the outer space, and the optical connections can be used without the risk of damage by the potting compound.
  • FIG. 3 shows by way of example a part of the underground network with the access devices according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Medical Informatics (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un appareil d'accès à un réseau local sans fil (WLAN) à utiliser dans des excavations souterraines exposées à des gaz, lequel appareil se compose d'une unité centrale pourvue d'au moins un point d'accès WLAN standard présentant une gamme de fréquences correspondante et un commutateur Ethernet standard respectif, d'au moins un convertisseur de support présentant un module émetteur-récepteur destiné à convertir les signaux Ethernet électriques, utilisés en interne, en signaux optiques transportés par l'intermédiaire de guides d'ondes optiques, de circuits protecteurs pour l'alimentation en courant et d'antennes externes ainsi que d'autres modules électroniques en option, ces composants standard étant encapsulés en sécurité intrinsèque dans l'unité centrale et cette unité centrale étant placée dans un boîtier homologué à sécurité intrinsèque, lequel boîtier offre un espace de connexion supplémentaire pour les guides d'ondes optiques, une alimentation en courant externe à sécurité intrinsèque et les câbles d'antennes.
PCT/DE2006/001533 2005-09-05 2006-08-31 Appareil d'acces wlan a utiliser dans des excavations souterraines exposees a des gaz WO2007028361A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510042257 DE102005042257B4 (de) 2005-09-05 2005-09-05 WLAN-Zugangsgerät für den Einsatz in gasgefährdeten Grubengebäuden
DE102005042257.8 2005-09-05

Publications (2)

Publication Number Publication Date
WO2007028361A2 true WO2007028361A2 (fr) 2007-03-15
WO2007028361A3 WO2007028361A3 (fr) 2007-04-26

Family

ID=37708393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/001533 WO2007028361A2 (fr) 2005-09-05 2006-08-31 Appareil d'acces wlan a utiliser dans des excavations souterraines exposees a des gaz

Country Status (2)

Country Link
DE (1) DE102005042257B4 (fr)
WO (1) WO2007028361A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7837397B2 (en) * 2008-02-13 2010-11-23 Fiber Connections Inc. Digital signal media conversion panel
CN102287223A (zh) * 2011-07-14 2011-12-21 山东国泰科技有限公司 基于pid集成控制的避难室或救生舱综合生命保障装置
GB2515183A (en) * 2013-06-07 2014-12-17 Strata Products Worldwide Llc Mine WiFi and method
CN113055768A (zh) * 2021-03-26 2021-06-29 平安开诚智能安全装备有限责任公司 一种矿井WiFi6无线通信系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010000110U1 (de) * 2010-02-01 2011-06-01 Bucyrus Europe GmbH, 44534 Eigensichere Anschlusseinheit mit Netzwerk-Schnittstelle, eigensicheres Gerät und Netzwerk-Schnittstelle hierfür
CN102562162B (zh) * 2011-12-14 2014-05-07 北京邮电大学 一种基于事件处理的煤矿报警系统及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614539A (en) * 1969-06-02 1971-10-19 Sybron Corp Intrinsically safe system including electrical barrier with external connectors
DE19513910A1 (de) * 1994-04-14 1995-10-19 Kh Controls Inc Eigensichere Stromquelle
US20050059396A1 (en) * 2003-09-09 2005-03-17 Chuah Mooi Choo Communications protocol between a gateway and an access point

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733300A1 (de) * 1987-10-02 1989-04-20 Bergwerksverband Gmbh Kombinierte anzeige-, steuer- und kontrolleinheit fuer unter tage
JP2000143921A (ja) * 1998-11-05 2000-05-26 Daikin Ind Ltd 電子電気機器の部品用フッ素樹脂組成物および電子電気機器用部品
FI114827B (fi) * 2003-07-03 2004-12-31 Sandvik Tamrock Oy Menetelmä ja järjestelmä kaivosajoneuvon sijainnin valvomiseksi
EP1506795A3 (fr) * 2003-08-11 2007-11-28 Mirafin AG Procédé et dispositif pour réaliser des services de protection et communication sur les chantiers souterrains
SE0303156D0 (sv) * 2003-11-26 2003-11-26 Atlas Copco Rock Drills Ab Navigation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614539A (en) * 1969-06-02 1971-10-19 Sybron Corp Intrinsically safe system including electrical barrier with external connectors
DE19513910A1 (de) * 1994-04-14 1995-10-19 Kh Controls Inc Eigensichere Stromquelle
US20050059396A1 (en) * 2003-09-09 2005-03-17 Chuah Mooi Choo Communications protocol between a gateway and an access point

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
ATEX: "Explosion Proof Wireless Access Point" ATEX CERTIFCATE, [Online] 28. November 2003 (2003-11-28), XP002420077 Gefunden im Internet: URL:http://195.226.51.119/images/pdf/iWAP% 20ATEX%20Certificate.pdf> [gefunden am 2007-02-13] *
EXTRONICS: "iWAP 100 Universal Zone 1 Access Point" EXTRONICS, [Online] 2003, XP002420076 Gefunden im Internet: URL:http://www.extronics.com/images/pdf/31 5176_1%20iWAP100%20Zone%201%20Access%20Poi nt%20Data%20Sheet%20.pdf> [gefunden am 2007-02-14] *
GARRY EINICKE, ELLIOT DUFF, DAVID REID, JON RALSTON, JOCK CUNNINGHAM, DAVID HAINSWORTH, JON ROBERTS AND PETER CORKE: "The Application of Wireless LANS in Mine Automation" CREATING THE VIRTUAL ENTERPRISE -LEVERAGING WIRELESS TECHNOLOGY WITHIN EXISTING BUSINESS MODELS FOR CORPORATE ADVANTAGE, [Online] 8. August 2002 (2002-08-08), XP002420079 Sydney Gefunden im Internet: URL:http://www.dem.csiro.au/mining_automat ion/research/publications/wlan18.pdf> [gefunden am 2007-02-13] *
HAVENS P: "LAN/WAN ETHERNET OVERCURRENT AND OVERVOLTAGE PROTECTION" ELECTRONIC DESIGN, PENTON MEDIA, CLEVELAND, OH, US, Bd. 48, Nr. 9, 1. Mai 2000 (2000-05-01), Seite 126,128, XP000945789 ISSN: 0013-4872 *
JOHN COX: "Wireless monitors entergise a power company" NETWORK WORLD, [Online] 10. Mai 2005 (2005-05-10), XP002420080 Gefunden im Internet: URL:http://www.techworld.com/features/inde x.cfm?featureID=1427&printerfriendly=1> [gefunden am 2007-02-13] *
NETGEAR: "DG834GT 108MBPS SUPER WIRELESS ADSL ROUTER WITH 4-PORT 10/100 SWITCH" NETGEAR PRODUCTS, [Online] 2004, XP002420078 Gefunden im Internet: URL:http://www.netgear.com/upload/product/ dg834gt/enus_ds_dg834gt.pdf> [gefunden am 2007-02-14] *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7837397B2 (en) * 2008-02-13 2010-11-23 Fiber Connections Inc. Digital signal media conversion panel
CN102287223A (zh) * 2011-07-14 2011-12-21 山东国泰科技有限公司 基于pid集成控制的避难室或救生舱综合生命保障装置
GB2515183A (en) * 2013-06-07 2014-12-17 Strata Products Worldwide Llc Mine WiFi and method
US9992610B2 (en) 2013-06-07 2018-06-05 Strata Products Worldwide Llc Mine WiFi and method
CN113055768A (zh) * 2021-03-26 2021-06-29 平安开诚智能安全装备有限责任公司 一种矿井WiFi6无线通信系统

Also Published As

Publication number Publication date
WO2007028361A3 (fr) 2007-04-26
DE102005042257A1 (de) 2007-03-15
DE102005042257B4 (de) 2007-10-31

Similar Documents

Publication Publication Date Title
DE102005042257B4 (de) WLAN-Zugangsgerät für den Einsatz in gasgefährdeten Grubengebäuden
DE102008010929A1 (de) Mobilfunkstation und Hybridkabel für eine Mobilfunkstation
EP3910298B1 (fr) Module d'affichage et de commande amovible pour un appareil de terrain
DE102017123821A1 (de) Anzeige- und/oder Bedienmodul
WO2018036970A1 (fr) Adaptateur pour système de gestion de batterie et système de gestion de batterie
DE102008010930A1 (de) Adapter für ein Koaxialkabel
WO2013117714A1 (fr) Dispositif de surveillance d'un point de distribution
EP1220236A2 (fr) Câble
EP0967817A2 (fr) Connexion d'un terminal de surveillance avec un station de base d'un réseau mobile de télécommmunication
EP1281656A1 (fr) Système et dispositif pour entretien à distance d'une grue
WO2020058173A1 (fr) Connecteur de charge destiné à être couplé à un dispositif de liaison correspondant et destiné à transmettre de l'énergie électrique ainsi que dispositif de charge destiné à distribuer de l'énergie électrique à un récepteur d'énergie électrique
EP1744487A1 (fr) Système modulaire pour l'alimentation d'énergie d'un dispositif entrée/sortie avant connecté plusieurs noeuds
DE102008064624A1 (de) Mobilfunkstation und Hybridkabel für eine Mobilfunkstation
DE102014212363A1 (de) Tragbarer Koffer mit WLAN-Zugangspunkt
DE102007052523A1 (de) Verbinder und Verfahren zum Bereitstellen eines Zugangs zu einem Datenverarbeitungsnetz für eine Datenverarbeitungseinrichtung
DE112018001820T5 (de) Drahtloser überwachungs- und konfigurations-tether zur verwendung mit einem isolierten industrieprodukt und verfahren zu dessen betrieb
EP2273287B1 (fr) Dispositif de capteur optoélectronique
DE10205315B4 (de) Massenspeichervorrichtung
DE102005047742A1 (de) Funkmodul und Anordnung mit einem Funkmodul
EP1473946B1 (fr) Centre de communication
DE3437906A1 (de) Automatische pruefeinrichtung fuer fernmeldegeraete
DE10040905A1 (de) Vorrichtung zur Steuerung von Sensoren und zur Verarbeitung und Übertrgung von Messwerten
WO2001043313A1 (fr) Dispositif pour l'etablissement d'une liaison mobile sans fil au reseau internet
DE102014006619A1 (de) Verbindungskabel
DE19841198A1 (de) Bedien- und Anzeigeeinheit für Automatisierungssysteme im untertägigen Berg- und Tunnelbau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 06791339

Country of ref document: EP

Kind code of ref document: A2