Wireless field device or wireless field device adapter with dismountable antenna module

FIELD: measurement equipment.

SUBSTANCE: invention relates to the field devices used in process control and monitoring systems, and, in particular, to field devices which use wireless data transmission. The wireless field device or the adapter for conversion of the wire field device to the wireless field device includes the housing, the first plug socket on the housing and the dismountable antenna module which includes the antenna, the second plug socket which is capable to connect and disconnect from the first plug socket, and the fairing which contains the antenna and is fixed on the second plug socket. The fairing is made from current-dissipating material which dissipates the generated static voltage without sparking at connection and disconnection of plug sockets, making it possible to separate the antenna or to install during the time of occurrence of the wireless field device in potentially hazardous (classified) zone.

EFFECT: protecting from sparking during antenna dismantling or mounting in case of operation in a hazardous zone.

15 cl, 8 dwg

 

The technical field to which the invention relates

The present invention relates to field devices used in control systems and monitoring production processes, and in particular, to the field devices that use wireless data.

The level of technology

Field devices are used in systems of control and monitoring of industrial processes and automatic control of industrial and chemical processes. Field device transmits data representing a physical parameter such as temperature, pressure, position etc. in the computer or the host process control, and may also receive control signals that are necessary to the field device to perform an action, such as opening or closing a valve.

Field devices located in hazardous (classified) areas, such as flammable or explosive atmospheres. Field device located in a flammable or explosive environment can as protection to have intrinsic safety. Thus, the device consumes energy minor and cannot cause a spark, which will cause fire or explosion.

Initially, the field devices transmit data to and from the host through the wired network. Provo�networks may also be supplying power to the field devices. Supply energy over a wired network itself may be limited by the level of intrinsic safety, by supplying power to field devices located in hazardous (classified) area.

Wireless data transmission, meanwhile, is becoming more popular. Wireless field devices include an antenna that sends and receives data wirelessly. The antenna is housed in a cover, which is traditionally made of insulating material, thus, the antenna is separated from the environment.

Wireless field devices can be designed only for data transfer via a wireless connection or can be converted from wired field devices using a wireless network adapter, wireless field devices.

Wireless field devices can be networked, such as wire mesh or network with a star topology, which is able to use signals of relatively low power received and transmitted wireless field devices. Such low-power wireless field devices have advantages when used in hazardous (classified) areas.

Wireless field devices for use in hazardous (classified) areas commonly used capacitors or other electric�patients under stood the antenna circuit in the signal path. These circuit elements operate as a high-pass filter that in case of a short circuit of the antenna allows you to generate and pass to the antenna only pulses with low energy. Such pulses with low energy can cause sparks.

Traditional wireless field device has a permanently attached antenna. The antenna can be removed when the wireless field devices in hazardous (classified) area.

It is desirable to have a wireless field device that includes an installable or removable antenna and, especially, used a wireless field device in a hazardous (classified) area should be installable or removable antenna. Antenna installation is similar to a wireless field device in the field to be carried out of improper or abnormal way, even if a field wireless device was located in hazardous (classified) area.

Concern in the operation of wireless field devices in hazardous (classified) area causes static electricity. Removal or installation of the antenna itself can cause a spark, which runs between the Radome (insulator) and the device due to the presence of accumulated static electricity.

Disclosure of the invention

The object of the invention is a removable antenna module for connection to the corresponding database field devices located in hazardous area, and

specified the appropriate base capable of conducting radio frequency signals; specified the antenna module contains:

a base made at least partially of conductive material capable of conducting radio frequency signals, and the base is made with the possibility of connection with the respective base and conduct radio frequency signals between them;

the antenna connected to the substrate, for transmitting and receiving RF signals;

fairing attached to the base, wherein the fairing has a hole and an internal volume, the antenna is located in the internal volume of the cowling, and the base closes the opening of the fairing;

characterized in that it comprises static dissipative material coupled to the base and in electrical contact with the base, wherein the fairing includes a surface having electrical contact with conductive �the base material, a static dissipative material forms a specified surface of the fairing.

The fairing is a one-piece single element made of a specified static dissipative material.

The fairing comprises an inner surface, and the conductive material defines the outer surface of the base, wherein the inner and outer surfaces together form an interference fit between them.

Detachable antenna module containing a rigid cover mounted on the base, with a hard cap limits the internal volume of the hard cap, and the antenna is specified in the internal volume of the hard cap.

The base is a socket N-type.

Specified static dissipative material has a surface resistivity higher than 105but less than 109Ohms per square.

The static dissipative material is a conductive polymer material.

The Foundation is one of the following groups: (a) BNC connector; b) SCA connector; (c) SMP-connection; (d) SMA connector; (e) socket N-type; and (f) further developed in the connecting device.

Another object of the invention is an improved wireless field device for use in hazardous (classified) area that includes a removable antenna module p�olivedale sparks when removing or attaching the antenna module.

A wireless device according to the present invention includes

the housing, the wireless communication module in the housing, the first half of the connector located on the housing, and the first half of the connector is capable of transmitting the RF signal, the first signal line in the body extending from the first half of the connector to the wireless communication module, a removable antenna module, removable attached to the first half of the connector, and the frame containing static dissipative material.

Detachable antenna module includes the second half of the connector, the antenna is electrically connected to the second half of the connector, and the fairing, and the antenna is placed in a dome.

The second half of the connector has the ability to connect and disconnect with the first half of the connector, the first and second half of the connector is capable of conducting radio frequency signals between each other when they are connected together. The frame is in electrical contact with the first half of the connector when the detachable antenna module is attached to the first half of the connector.

Static dissipative material is resistant to electrostatic discharge material having a value of Adelino� surface resistance higher than 10 5(ten in the fifth degree) Ohms per square, but not higher than 109(10 to the ninth power) Ohms per square. The value of the specific surface resistance of a material is numerically equal to the surface resistance between two electrodes forming opposite sides of a square. The size of the square does not matter. Surface resistivity is applied both surface and volume conductive material and has a value in Ohms per square.

Occurring static charge between the detachable antenna module and the rest of the field devices is dissipated to ground through the static dissipative frame, counteracting sparks when connecting or disconnecting the halves of the connector.

In a preferred embodiment, the fairing is static dissipative framework. The fairing is preferably made of a static dissipative thermoplastic. An interference fit between the fairing and the second half of the connector is mechanically attached and electrically connects the fairing to the second half of the connector.

Other objectives and features of the invention will become apparent from the following description, particularly when considered in conjunction with the accompanying drawings, illustrating a variant implementation of the present image�etenia.

Brief description of the drawings

Fig.1 illustrates a field device according to the present invention, forming a cellular wireless communications network;

Fig.2 illustrates a field device according to the present invention, forming a network with a star topology, wireless communication;

Fig.3 is a schematic block diagram of a wireless field device according to the present invention;

figures 4, 5 and 6 are top, front and side of the network adapter that is part of the wireless field device shown in Fig.3;

Fig.7 is a view in section of the detachable antenna module that forms part of the network adapter shown in figures 4 through 6; and

Fig.8 is a plan view vertical section of the removable antenna module shown in Fig.7.

The implementation of the invention

Fig.1 shows a lot of wireless field devices 10 according to the present invention, which forms a self-organizing mesh network known in the art in the field of distribution management systems. Each field device 10 forms a node in the network and includes a removable antenna node or module 12, which provides the ability to field device 10 to receive or transmit radio-frequency communication 14 through the adjacent nodes to the gateway 16. The gateway 16 I�is typical and connects the cellular network via a wired network connection to the host 20.

Some wireless field devices 10 are located in hazardous (classified) area, indicated by the dotted rectangle 22. Hazardous (classified) area may be flammable or explosive environment. As described in more detail below, the antenna module 12 field device 10 is resistant to sparks and can be removed or re-installed, even if the field device is located in a hazardous (classified) area 22.

Fig.2 shows a wireless field device 10 in accordance with the present invention, which forms a network with star topology, as is known in the distribution management system in the art. Each field device 10 forms a node in the network that receives or transmits radio frequency communications 14 directly to the gateway 16. The gateway connects the network with star topology through a wired connection 18 to the host 20. Field devices 10 are located in hazardous (classified) area 22 and the antenna module 12 field device 10 can be removed or re-installed until the field device 10 is in a hazardous (classified) area 22. Network with star topology may be combined with one or more other networks with star topology, forming a hybrid mesh (not shown), also known as�STN in engineering, related to distribution management systems.

Fig.3 schematically shows a field device 10, it should be understood that the field device 10 can have various shapes and sizes.

The field device 10 includes a housing 24, which may be made of shatter-resistant material or other suitable material that enables operation of the field device when in hazardous (classified) area. The first half 26 of the connector attached to the outer surface of the housing. The antenna module 12 includes a retaliatory second half 28 of the connector, which connects to the first half of the plug 26 and mounts a removable antenna module 12 on the housing 10 and the antenna 30, which receives and transmits radio signals.

The housing 24 includes a transmitter 32 which transmits the control signals to the process representing the physical data or control data, to the controller 34. The controller 34 in turn communicates with the wireless communication module 36, which is functionally connected to the first half 26 of the connector through the signal line 38. The wireless communication module 36 converts the RF signals into control signals vice versa, allowing the signal 14 in the wireless channel tie� to transfer data to and from the controller 34. The signal line 38 may include a capacitor capacitance, represented by capacitor 40 or other circuit elements (not shown) known in the art, which restricts or controls the energy in the signal line 38 in case of short circuit, to prevent sparking or arc flash. The layout of the circuits are earthed via the earthing terminal.

Shown wireless field device 10 was initially the field device 42 wired HART communication, which included a Converter 32 and the controller 34, and includes a module 44 wired connection, and a connector 46 for connecting to a wired network. Network adapter 48 wireless mechanically attached to the housing 50 field devices 42 and matches the field device 42 wired communication with the field device 10 with the wireless HART communication. Network adapter 48 includes a case 52, designed for use in hazardous (classified) area, as shown, the housing 24 is formed from the housing 50 field devices wired connection and the housing 52 of the network adapter. The first half 26 of the connector attached to the outside of the housing 52 of the adapter and the adapter 48 wireless also includes a wireless communication module 36 and the signal line 38. AC adapter� 48 wireless has an antenna module 12. The antenna sends, or transmits in the 2.4 GHz band, as defined in the standard for wireless HART.

Figures 4-6 show the network adapter 48 with attached wireless communication antenna module 12. Network adapter 48 includes a mounting structure 54 is located on one of the lower end portion of the adapter, which is used for attaching the adapter to a wired field device, and the cover 56 for access, which provides access to the internal wiring and connections. In this embodiment, the first half 26 of the connector is a standard metal covering the rack connector N-type, which is fixed to the opposite upper end portion of the adapter 48.

Fig.7 shows the antenna module 12 in a disassembled form. The antenna module 12 includes the second half 28 of the connector, the helical antenna 30, the cap 58 and the fairing 60.

The second half 28 of the connector is a metal male connector N-type. Part of the connector 62 having a larger diameter, is located on one end portion of the half 28 of the connector adjacent to the cylindrical portion 64 of smaller diameter, having an outside thread. Tubular through the connecting sleeve 66 is located on another end portion of the housing half 28, which�traveler passes through the housing half 28.

The antenna 30 has a spiral portion 68 and an elongated pin 70, which attaches the antenna 30 through the coupling sleeve 66.

The cap 58 is a solid, single element, which has a lower opening 72 and forms the internal volume 74. The cap 58 is made of a non-conductive transparent plastic, known in the art.

The fairing 60 is a single indivisible item which has the lower hole 76 and forms an internal volume 78. The fairing 60 is manufactured from static dissipative material.

The fairing 60 is preferably manufactured by way of injection molding using a thermoplastic material with high fluidity, which essentially has static dissipative properties. Preferably thermoplastic material does not include embedded metal conductors or fiber optics that can degrade performance of the antenna. The composition is selected so as to satisfy the requirements for tarasevicius as specified in the EU Directive that describes the hardware requirements and work in potentially explosive environments. Such materials supplies RTR Company, 580 East Front Street, Winona, Minnesota 55987 and other suppliers. Can be used and other known static dissipative materials, if they have enough for�transparency.

Fig.8 is a sectional view of the antenna module 12. The antenna pin 70 is inserted through the connecting sleeve 66 and soldered in this place that rigidly attaches the antenna to a through the coupling sleeve 66. Plastic cap 58 is twisted in the threaded portion 64 of the connector housing. The portion 64 of the connector housing closes the lower opening 72 of the cap 58, and the antenna 30 is accommodated in the interior of the cap 74. The assembled cap 58 and the plug 28 are then inserted through the hole 76 of the fairing to the fairing 60, the cap 58 and the antenna 30 are located in the internal volume 78 fairing 60. Plug 28 closes the opening 76 of the fairing, the inner surface of the fairing 60 and the inner surface portion 66 of the connector housing having a larger diameter, which define and form an interference fit that simultaneously mechanically attaches the fairing 60 to a plug connector 28 and electrically connects the fairing to the antenna 30 to a socket 28.

Shown half 26 and 28 of the connector form a standard plug connector N-type, capable of passing RF signals. In other embodiments, the first and second halves of the connector can be the following compounds: (a) BNC connector; (b) the SCA connector; (c) SMP-connection; (d)SMA connector; (e) other known type of connection capable propositionalization signals; or (f) further developed in the connecting device.

Along with HART data and wireless data transfer Protocol the data transfer protocols that may be used with the present invention include without limitation a network FOUNDATION Fieldbus, Profibus, Modbus communication Protocol, ZIGBEE and ISA100.11a protocols as standardized systems management and monitoring of production processes (and further developed in the data transfer protocols). Wireless data transmission can also be implemented using protocols for mobile communications, wireless LAN or WiFi protocols, wireless Internet, Bluetooth, or other known or developed in the future wireless communication protocols.

While illustrated and described a preferred embodiment of the invention, it is not limited to set out the exact details, but allows for changes and additions that are not beyond the scope of the attached claims.

1. Detachable antenna module (12) for connection to the relevant database (26) of the field device (10) located in a hazardous area, and specified the appropriate base capable of conducting radio frequency signals, comprising:
the base (28) made at least justiceis conductive material, capable of conducting radio frequency signals, with the base (28) is made with the possibility of connection with the corresponding base (26) and conduct radio frequency signals between them;
the antenna (30) connected to the base (28) for transmitting and receiving RF signals;
fairing (60) attached to the base (28) and the Radome (60) has a hole (76) and internal volume (78), the antenna (30) is located in the internal volume (78) of the fairing (60) and the base (28) closes the opening of the fairing (60);
characterized in that it comprises static dissipative material coupled to the base (28) and in electrical contact with the base (28), wherein the Radome (60) comprises a surface having electrical contact with a conductive base material (28), and the static dissipative material forms a specified surface of the fairing.

2. Detachable antenna module according to claim 1, wherein the deflector (60) is a one-piece single element made of a specified static dissipative material.

3. Detachable antenna module according to claim 2, wherein the deflector (60) comprises an inner surface, and the conductive material defines the outer surface of the base (28), wherein the inner and outer surfaces together form an interference fit between them.

4. Detachable antenna module according to claim 3, further comprising ill - �cue the cover (58), mounted on the base (28);
hard cover (58) limits the internal volume of the rigid cap;
the antenna (30) is specified in the internal volume of the hard cap.

5. Detachable antenna module according to claim 4, wherein, the base (28) is a plug N-type.

6. Detachable antenna module according to claim 1, wherein said static dissipative material has a surface resistivity higher than 105but less than 109Ohms per square.

7. Detachable antenna module according to claim 1, wherein said static dissipative material is a conductive polymer material.

8. Detachable antenna module according to claim 1, in which the base (28) is one of the following groups: (a) BNC connector; b) SCA connector; (c) SMP-connection; (d) SMA connector; (e) socket N-type; and (f) further developed in the connecting device.

9. A wireless field device that contains:
the housing (24), the wireless module (36) connection, located in the specified case, first half (26) of the connector housing (24), and the first half of the connector capable of transmitting the RF signal, the first signal line (38) in the housing extending from the first half (26) of the connector to the wireless module (36) connection, a removable antenna module (12) is removable attached to the first�the barn (26) of the connector, and the frame that contains the static dissipative material;
specified removable antenna module (12) contains the second half (28) of the connector, the antenna (30), electrically connected to the second half (28) of the connector, and a Radome (60), wherein antenna (30) is placed in the Radome (60);
the second half (28) of the connector is able to connect and disconnect with the first half (26) of the connector, the first and second halves (26, 28) of the connector capable of transmitting RF signals between each other when connected together; and
the specified frame has electrical contact with the first half (26) of the connector when the detachable antenna module (12) is attached to the first half of the connector, wherein said frame is a Radome (60).

10. Wireless field device according to claim 9 in which the deflector (60) comprises a thermoplastic material.

11. Wireless field device according to claim 9, in which the second half (28) of the connector includes an electrically conductive outer surface, and a Radome (60) comprises an inner surface, the inner and outer surfaces to form an interference fit.

12. Wireless field device according to claim 9, in which the detachable antenna module (12) comprises a cap (58), made of elektroizolyacionnogo and attached to the second half (28) of the connector, the antenna (30) is in the cap (58).

13. Wireless field device according to any one of claims. 9-12, in which a wireless communication module configured to implement a Protocol data wireless from the following groups: (a) the standard for wireless HART, b) a wireless communication Protocol FIELDBUS, c) ZIGBEE, d) BLUETOOTH e) Wi-Fi, f) ISA100.11a and g) are developed in the future, the data transfer Protocol of wireless communication.

14. Wireless field device according to claim 9, in which the antenna (30) is rigidly attached to the second half (28) of the connector.

15. Wireless field device according to any one of claims. 1-12, 14, containing wired field device (42) and the adapter (48) wireless communication, the wired field device (42) comprises a housing (50) wired field device, the module (44) wired connection and a connector (46) for connection to a wired network, and a network adapter (48) wireless communications comprises a housing (52) of the network adapter and the wireless module (36) connection, and a network adapter (48) wireless mechanically attached to the housing (50) wired field device and converts the specified wired field device (42) at a specified wireless field device, wherein said housing (24) is formed from the housing (50) wired field device and the housing (52) of the network adapter.


 

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21 cl, 4 dwg

FIELD: information technologies.

SUBSTANCE: wireless field adapter (114) for maintenance comprises a source (132) of supply, a controller (130), a low-capacity radio-frequency module (122) of communication and a module (120) of a technological process wireless communication protocol. The controller (130) is connected with the source (132) of supply. The low-capacity radio-frequency module (122) of communication is also connected to the controller (130). The module (120) of the technological process wireless communication protocol is connected with the controller (130). The controller (130) is configured with the possibility of establishing communication via the module (120) of the technological process wireless communication protocol on the basis of information received from the low-capacity radio-frequency module (122) of communication.

EFFECT: simplified performance of control testing during maintenance.

20 cl, 5 dwg

FIELD: physics.

SUBSTANCE: present group of inventions relates to a process device wireless adapter. The process device wireless adapter includes a wireless communication module configured to communicatively connect to a process device and to a wireless receiver, wherein the wireless communication module is configured to interact with the process device in accordance with the standard technological protocol; a metal housing which surrounds the wireless communication module and has a first end and a second end, wherein the first end is configured to attach to the process device; a metallic shield which is in contact with the second end of the housing such that the metallic shield and the housing form an essentially continuous conducting surface; and an antenna which is communicatively connected to the wireless communication module and separated from the wireless communication module by the metallic shield.

EFFECT: design of a wireless communication adapter of a process device which is provided with electromagnetic interference protection and has a small form factor.

17 cl, 8 dwg

FIELD: information technology.

SUBSTANCE: apparatus with a network server computer and a programmable control unit for controlling a household appliance with several controllers, wherein the network server computer has memory for storing at least one website with at least one input means for actuating the control unit, and the control unit has at least one communication interface for establishing a network connection, through which a website can be accessed, wherein the network server computer is at least partially integrated into the control unit, and the control unit is adapted to launch an automatic installation process, wherein the control unit, through the communication interface, sends a controller list with controllers connected to the control unit to a central server installation computer and requests the website from the central server installation computer.

EFFECT: possibility of an automatic installation process for a household appliance with a plurality of user interfaces adapted under corresponding controllers.

20 cl, 16 dwg

FIELD: food industry.

SUBSTANCE: system for production of multiple types of food products that may be differed from each other in terms of configuration and/or composition; the system contains a container (2) for transportation of multiple moulds (M) placed on it along multiple work places (S1-S16). Each mould (M) is equipped with a corresponding electronic ID device (T) including memory devices (4). Each work place (S1-S16) is equipped with at least one corresponding electronic unit (A-E) including a processor (9) connected to the memory devices (10) and at least one antenna or a similar device (15) and is designed to be able to read information or data and/or to record information or data to the memory devices (4) of the mould (M). The initial input work place (S1) transfers or records to the memory devices (4) information on identification of products (P) moulded in the mould (M) while the electronic unit of each additional work place (S3, S6 …) can selectively modify the execution mode, of at least one operation in accordance with processing information read from the memory devices (4) wherewith each mould (M) passing through the work place is equipped.

EFFECT: according to the invention the system allows to adapt the process of moulded products production in real time in a flexible manner and in a flexible way on the basis of the specified requirements.

20 cl, 5 dwg

FIELD: information technology.

SUBSTANCE: invention relates to a data support system (1) for handling processes based on electronic data exchange to obtain information (37, 39) for handling processes (2). Information is obtained (34) through at least one application subsystem (24), which enables to obtain information (37, 39), relating to the present situation (situational information). Information for handling processes (2) is obtained (34) through at least one application subsystem (24).

EFFECT: providing situational data for a process and scheduling, and the user of an information support system is less burdened from the qualified process of obtaining information.

2 dwg

FIELD: tire industry.

SUBSTANCE: proposed plant contains great number of working units operating successively. Plant is furnished with central processor made for setting successive execution of great number of operations at working stations. Each working station contains at least one unit of indicated working units according to one or several set sequences of tire types. Plant includes also local processor connected with each working station and made for determining type corresponding to drum found in each of said working units. Local processor provides selection of definite procedure from preset group of procedures for each of said working units designed for type of tire corresponding to drum to be used in operation. Invention reduces to minimum downtimes for changing type of tire to be manufactured and makes it possible to manufacture lots of tires of different types without changing equipment producing tire semifinished products.

EFFECT: provision of automatic manufacturing of different type tires.

9 cl, 3 dwg

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