Wireless communication device with internal antenna system for use in hazardous locations

• US 20090081963A1
• Filed: 01/23/2008
• Published: 03/26/2009
• Est. Priority Date: 01/26/2007
• Status: Abandoned Application

• Current Assignee: IP Sensing Incorporated
• Original Assignee: IP Sensing Incorporated
• Inventors: Boren, William Bret
• Application Number:
  US12/009,937
• Publication Number:
  US 20090081963A1
• Time in Patent Office: Days
• US Class Current: 455/90.100
• CPC Class Codes: H01Q 1/002 Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
• CPC Class Codes: H01Q 11/08 Helical antennas
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H04B 1/40 Circuits

Abstract

A self-contained radio frequency (RF) wireless communication device (100) comprising an explosion-proof housing (110), an internal electronic system for the conversion of radio wave and conducted electrical signals, and an internal antenna system located within a non-metallic portion (130) of the housing for collecting and emitting radio wave energy. The antenna system enables the wireless communication device (100) to safely collect and emit radio wave energy using one or more optimally configured antenna resonators (351), with each antenna resonator differing each other antenna resonator by at least one attribute in a group of attributes comprising: frequency response, field polarization, and wavelength spatial diversity.

The present invention is a self-contained RF wireless communication device that provides data communications between two or more devices for the supervisory control and/or data acquisition of actuators, sensors, transducers, gas detectors, and other devices located in explosive hazardous locations without the need of installing one or more external antennas, one or more antenna connectors, excessive conduit connections and seals, and the like, whereby reducing system installation components count and eliminating conduit connections, furthermore reducing the probability of system-level failures caused by lower-level faults of components and conduit connections, resulting in a less expensive and safer electrical equipment installation.

Claims

1. A wireless communication device for transferring radio wave energy to and from a dynamic system, attenuating heat energy intensity produced by said dynamic system, and controlling pressure forces produced by said dynamic system, whereby enabling said dynamic system to communicate with external devices using radio wave communication methods without igniting a surrounding atmosphere of explosive elements concentrations, comprising:

(a) means for capturing said dynamic system in a capsule, whereby containing ignition sources and explosive elements of said dynamic system in the confined capsule interior,

(b) means for propagating said dynamic system generated radio wave energy through said capsule walls, whereby transferring radio wave signals between said dynamic system within capsule interior and external devices beyond capsule walls,

(c) means for absorbing heat energy produced by said dynamic system into said capsule walls, whereby preventing the ignition of explosive elements surrounding said capsule by reducing the temperature of heat energy while traveling a path from the capsule internal region to the capsule external region,

(d) and means for trapping under pressure the hot gases produced by said dynamic system within interior of said capsule, whereby preventing hot gases and flames produced by an explosion within the capsule from escaping capsule walls to the surrounding atmosphere of capsule.

2. A wireless communication device for transferring radio wave energy to and from a dynamic system, attenuating heat energy intensity produced by said dynamic system, and controlling pressure forces produced by said dynamic system, whereby enabling said dynamic system to communicate with external devices using radio wave communication methods without igniting a surrounding atmosphere of explosive elements concentrations, comprising:

(a) means for capturing said dynamic system in a capsule, whereby containing ignition sources and explosive elements of said dynamic system in the confined capsule interior,

(b) means for propagating said dynamic system generated radio wave energy through said capsule walls, whereby transferring radio wave signals between said dynamic system within capsule interior and external devices beyond capsule walls,

(c) means for conducting electrical energy to and from said dynamic system through capsule walls, whereby transferring conducted electrical energy between said dynamic system within capsule interior and external devices beyond capsule walls,

(d) means for absorbing heat energy produced by said dynamic system into said capsule walls, whereby preventing the ignition of explosive elements surrounding said capsule by reducing the temperature of heat energy while traveling a path from the capsule internal region to the capsule external region,

(e) and means for trapping under pressure the hot gases produced by said dynamic system within interior of said capsule, whereby preventing hot gases and flames produced by an explosion within the capsule from escaping capsule walls to the surrounding atmosphere of capsule.

3. A wireless communication device of claim 2, comprising:

(a) a capsule comprising;

i. a conduit fitting portion, wherein the conduit fitting portion comprises;

A. a fitting defining conduit fitting portion first end and conduit fitting portion second end,

B. a hollow cavity between said conduit fitting portion first end and conduit fitting portion second end,

C. a threaded connection at said conduit fitting portion first end,

D. a joint mating section at said conduit fitting portion second end;

ii. a non-metallic portion, wherein the non-metallic portion comprises;

A. a pressure vessel defining non-metallic portion first end and non-metallic portion second end,

B. a hollow cavity between said non-metallic portion first end and non-metallic portion second end,

C. a joint mating section at said non-metallic portion first end,

D. a closed off said non-metallic portion second end, whereby said pressure vessel has only one opening at the said non-metallic portion first end;

iii. means for joining said conduit fitting portion second end to said non-metallic portion first end;

(b) an antenna system, whereby providing the wireless communication device a means to radiate and collect radio wave energy,

i. wherein the antenna system is located within the non-metallic portion of said capsule,

ii. wherein the antenna system comprises one or more antenna resonators;

(c) an electronic system, whereby providing the wireless communication device a means of converting between forms of radio wave signals and conducted electrical signals,

i. wherein the electronic system is located within the capsule,

ii. wherein the electronic system comprises;

A. at least one printed circuit board,

B. at least one power supply portion,

C. at least one data converter portion,

D. a plurality of conduit port electrical conductors,

E. an RF transceiver,

F. and said antenna system;

(d) and a conduit port, whereby providing the wireless communication device an electromechanical interface to external devices,

i. wherein said conduit port is an integral part of the said conduit fitting portion of said capsule,

ii. wherein said conduit port has within said plurality of conduit port electrical conductors,

iii. wherein said conduit port is filled with a conduit sealing compound, whereby creating a factory-installed conduit seal,

iv. wherein said conduit port first end has a threaded section, whereby providing a means for connecting conduit fitting portion first end to an external rigid metal conduit compatible fitting.

4. A wireless communication device for transferring radio wave energy to and from a dynamic system, attenuating heat energy intensity produced by said dynamic system, and controlling pressure forces produced by said dynamic system, whereby enabling said dynamic system to communicate with external devices using radio wave communication methods without igniting a surrounding atmosphere of explosive elements concentrations, comprising:

(a) means for capturing said dynamic system in a capsule, whereby containing ignition sources and explosive elements of said dynamic system in the confined capsule interior,

(b) means for propagating said dynamic system generated radio wave energy through said capsule walls, whereby transferring radio wave signals between said dynamic system within capsule interior and external devices beyond capsule walls,

(c) means for conducting electrical energy to and from said dynamic system through capsule walls, whereby transferring conducted electrical energy between said dynamic system within capsule interior and external devices beyond capsule walls,

(d) means for absorbing heat energy produced by said dynamic system into said capsule walls, whereby preventing the ignition of explosive elements surrounding said capsule by reducing the temperature of heat energy while traveling a path from the capsule internal region to the capsule external region,

(e) and means for trapping under pressure the hot gases produced by said dynamic system within interior of said capsule, whereby preventing hot gases and flames produced by an explosion within the capsule from escaping capsule walls to the surrounding atmosphere of capsule.

5. A wireless communication device of claim 4, comprising:

(a) a capsule comprising;

i. a conduit fitting portion, wherein the conduit fitting portion comprises;

A. a fitting defining conduit fitting portion first end and conduit fitting portion second end,

B. a hollow cavity between said conduit fitting portion first end and conduit fitting portion second end,

C. a threaded connection at said conduit fitting portion first end,

D. a joint mating section at said conduit fitting portion second end;

ii. a non-metallic portion, wherein the non-metallic portion comprises;

A. a pressure vessel defining non-metallic portion first end and non-metallic portion second end,

B. a hollow cavity between said non-metallic portion first end and non-metallic portion second end,

C. a joint mating section at said non-metallic portion first end;

iii. means for joining said conduit fitting portion second end to said non-metallic portion first end;

(b) an antenna system, whereby providing the wireless communication device a means to radiate and collect radio wave energy,

i. wherein the antenna system is located within the non-metallic portion of said capsule,

ii. wherein the antenna system comprises one or more antenna resonators;

(c) an electronic system, whereby providing the wireless communication device a means of converting between forms of radio wave signals and conducted electrical signals,

i. wherein the electronic system is located within the capsule,

ii. wherein the electronic system comprises;

A. one or more printed circuit boards,

B. one or more power supply portions,

C. one or more data converter portions,

D. plurality of conduit port electrical conductors,

E. at least one RF transceiver,

F. said antenna system,

G. and plurality of intrinsically safe interface port electrical conductors;

(d) a conduit port, whereby providing the wireless communication device an electromechanical interface to external devices,

i. wherein said conduit port is an integral part of the said conduit fitting portion of said capsule,

ii. wherein said conduit port has within said plurality of conduit port electrical conductors,

iii. wherein said conduit port is filled with a conduit sealing compound, whereby creating a factory-installed conduit seal,

iv. wherein said conduit port first end has a threaded section, whereby providing a means for connecting conduit fitting portion first end to an external rigid metal conduit compatible fitting;

(e) and one or more intrinsically safe circuit interface ports,

i. wherein at least one intrinsically safe circuit interface port is an integral part of the said non-metallic portion of said capsule,

ii. wherein said one or more intrinsically safe circuit interface ports have said plurality of intrinsically safe circuit interface port electrical conductors,

iii. wherein the one or more intrinsically safe circuit interface ports are filled with an encapsulated enclosure casting compound to create an intrinsically safe electrical barrier between capsule walls and plurality of intrinsically safe circuit interface port electrical conductors.

12. The process of providing a wireless communication device in an explosion-proof housing for use in a hazardous location capable of providing a means for transmitting and receiving conducted electrical energy by one or more electromechanical interface ports comprising at least one conduit port with factory-installed conduit seal and at least one intrinsically safe interface port, whereby allowing external equipment and devices such as transducers, actuators, sensors, and other devices to benefit from data transfer using conducted electrical and wireless communication, by using the wireless communication device of claim 4.

15. The process of providing a wireless communication device in an explosion-proof housing comprising conduit port with factory-installed conduit seal, an internal antenna system, and one or more intrinsically safe interface ports without the dependence of a separate explosion-proof enclosure, or separate transceiver, or a separate antenna, or separate antenna connector, or separate conduit seals by using the wireless communication device of claim 4.

6. (canceled)

7. (canceled)

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9. (canceled)

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14. (canceled)