Source: https://patents.google.com/patent/US8694060B2/en
Timestamp: 2018-11-16 16:35:54
Document Index: 18546542

Matched Legal Cases: ['ART.\n18', 'application No. 200980122611', 'application No. 2012527994', 'application No. 2011101386', 'application No. 2726613', 'application No. 200680035248', 'application No. 200980']

US8694060B2 - Form factor and electromagnetic interference protection for process device wireless adapters - Google Patents
US8694060B2
US8694060B2 US12485189 US48518909A US8694060B2 US 8694060 B2 US8694060 B2 US 8694060B2 US 12485189 US12485189 US 12485189 US 48518909 A US48518909 A US 48518909A US 8694060 B2 US8694060 B2 US 8694060B2
US12485189
US20090311976A1 (en )
FIG. 3 is a perspective view of an improved form factor wireless adapter 300 coupled to a process device 350, and FIG. 4 is a cross-sectional perspective view of adapter 300. Adapter 300 includes a mechanical attachment region 301 (e.g. a region having a threaded surface) that attaches to device 350 via a standard field device conduit 352. Examples of suitable conduit connections include ½-14 NPT, M20×1.5, G½, and ⅜-18 NPT. Adapter 300 is illustratively attached to or detached from device 350 by rotating adapter 300 about an axis of rotation 370. Attachment region 301 is preferably hollow in order to allow conductors 344 to couple adapter 300 to device 350.
a wireless communications module configured to communicatively couple to a process device of a type used in an industrial process control or monitoring system, a process control loop to which the process device is coupled, and to a wireless receiver, the wireless communications module being configured to be powered, at least in part, by the process device and also configured to interact with the process device in accordance with a standard industry protocol and to provide wireless communication capabilities to the process device;
an end cap having a metallic shield that contacts the housing second end such that the metallic shield and the housing form a substantially continuous conductive surface and shields the wireless communication module from electromagnetic interference; and
an antenna communicatively coupled to the wireless communications module through an aperture in the metallic shield and separated from the wireless communications module by the metallic shield.
4. The process device wireless adapter of claim 1, wherein the end cap further includes a plastic radome.
5. The process device wireless adapter of claim 1, wherein the metallic housing comprises aluminum.
6. The process device wireless adapter of claim 1, wherein the metallic housing comprises metalized plastic.
7. The process device wireless adapter of claim 1, wherein the metallic shield comprises stamped metal.
8. The process device wireless adapter of claim 1, wherein the metallic shield comprises plastic plated with a conductive material.
9. The process device wireless adapter of claim 1, wherein the metallic shield contacts the housing second end through spring fingers.
10. The process device wireless adapter of claim 1, wherein the metallic shield contacts the housing second end through a conductive elastomeric gasket.
11. A process device wireless adapter comprising:
a metallic housing having a length and a radius configured to mount to a process device of a type used in an industrial process control or monitoring system;
a printed circuit board within the metallic housing, the printed circuit board having a width and a length, the length of the printed circuit board running along the length of the metallic housing, the length of the printed circuit board being greater than the width of the printed circuit board, the printed circuit board configured to be communicatively coupled to a process device and to provide wireless communication capabilities to the process device;
an end cap having a metallic shield that forms a continuous conductive surface with the metallic housing, the metallic shield having a first side and a second side, the printed circuit board positioned proximate the first side; an antenna electrically connected to the printed circuit board through an aperture in the metallic shield, the antenna positioned proximate the metallic shield second side, the antenna configured to wirelessly transmit communications to a wireless receiver and to wirelessly receive communications from the wireless receiver; and
wherein the metallic shield shields the circuit board from electromagnetic radiation.
12. The process device wireless adapter of claim 11, wherein the antenna is a “rubber duck” style whip antenna.
13. The process device wireless adapter of claim 11, wherein potting is included within the metallic housing.
14. The process device wireless adapter of claim 11, further comprising a mechanical attachment region configured to attach to a process device conduit.
15. The process device wireless adapter of claim 14, wherein the mechanical connection region includes a threaded surface.
16. The process device wireless adapter of claim 1, wherein the standard industry protocol is 4-20 mA.
17. The process device wireless adapter of claim 1, wherein the standard industry protocol is HART.
18. The process device wireless adapter of claim 1, wherein the standard industry protocol is Modbus.
19. The process device wireless adapter of claim 1, wherein the standard industry protocol is FOUNDATION Fieldbus.
20. The process device wireless adapter of claim 1, wherein the standard industry protocol is CAN.
21. The process device wireless adapter of claim 1, wherein the standard industry protocol is Profibus—PA.
22. The process device wireless adapter of claim 1, wherein the metallic housing is configured to meet intrinsic safety requirements.
23. The process device wireless adapter of claim 1, wherein the metallic shield is further part of a ground plane of the antenna.
24. The process device wireless adapter of claim 11, wherein the metallic housing is in accordance with intrinsic safety requirements.
25. The process device wireless adapter of claim 11, wherein the metallic shield is further part of a ground plane of the antenna.
US12485189 2008-06-17 2009-06-16 Form factor and electromagnetic interference protection for process device wireless adapters Active 2030-08-30 US8694060B2 (en)
US7309808 true 2008-06-17 2008-06-17
US7309108 true 2008-06-17 2008-06-17
US12485189 US8694060B2 (en) 2008-06-17 2009-06-16 Form factor and electromagnetic interference protection for process device wireless adapters
CN 200980122613 CN102067051A (en) 2008-06-17 2009-06-17 Improved form factor and electromagnetic interference protection for process device wireless adapters
CN 201510996431 CN105469584A (en) 2008-06-17 2009-06-17 Form factor and electromagnetic interference protection for process device wireless adapters
EP20090767057 EP2291716B1 (en) 2008-06-17 2009-06-17 Improved form factor and electromagnetic interference protection for process device wireless adapters
US8694060B2 true US8694060B2 (en) 2014-04-08
US12485189 Active 2030-08-30 US8694060B2 (en) 2008-06-17 2009-06-16 Form factor and electromagnetic interference protection for process device wireless adapters
JP5850015B2 (en) 2013-09-17 2016-02-03 横河電機株式会社 Antenna modules and radio equipment
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CN102067051A (en) 2011-05-18 application
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