CN109961125A - Field device for automatic control technology - Google Patents
Field device for automatic control technology Download PDFInfo
- Publication number
- CN109961125A CN109961125A CN201711435543.6A CN201711435543A CN109961125A CN 109961125 A CN109961125 A CN 109961125A CN 201711435543 A CN201711435543 A CN 201711435543A CN 109961125 A CN109961125 A CN 109961125A
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- CN
- China
- Prior art keywords
- field device
- metal shell
- rfid
- rfid antenna
- field
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06159—Constructional details the marking being relief type, e.g. three-dimensional bar codes engraved in a support
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The present invention relates to the field devices for automatic control technology, wherein field device (1) has the metal shell (2) for accommodating field device electronic device (3), RFID chip (4) and the first RFID antenna (5) for being arranged in communication and/or energy transmission wireless between the external rfid reader device (6) of field device (1) and field device (1) is wherein provided, wherein the adjacent wall (7) of the first RFID antenna (5) and metal shell (2) is separately, shielding (8) is wherein provided between the first RFID antenna (5) and the adjacent wall (7) of metal shell (2), the wherein adjacent wall of the interval between the first RFID antenna (5) and the adjacent wall (7) of metal shell (2) and the first RFID antenna (5) and metal shell (2) (7) shielding (8) between is dimensioned, so that metal shell (2) does not hinder the wireless communication and/or energy transmission between rfid reader device (6) and field device (1).
Description
Technical field
The present invention relates to the field devices for automatic control technology.
Background technique
It is known that RFID " radio frequency identification " response is for example used in the logistics field of identification product and product component
Device --- often it is referred to as RFID label tag or wireless lebal.
RFID label tag makes it possible to automatic identification and positioning object, and has been obviously promoted the record of information and data therewith
And it provides.RFID system by being associated with object and RFID transponder or RFID label tag including more relevant informations and data,
And the reading device composition for reading information and data.Coupling between RFID label tag and reading device passes through reading device
Short range, magnetic, alternating field or the more long-range high frequency radio wave of generation is realized.Data are transmitted through the friendship of reading device generation
Variable field or high frequency radio wave are realized.In many cases, it is provided also by alternating field or high frequency radio wave direction chip
Energy.
RFID transponder/RFID label tag includes RFID chip and RFID antenna, and according to transmission frequency, manufacturer and is made
It is different with purpose.RFID chip usually by for sending and receiving data analog circuit, digital circuit and usually can cover
Write multiple memory composition.Usual digital circuit is realized by microcontroller.In the case where passive type RFID chip, lead to
Cross the energy supply that antenna is used as microcontroller in the energy of received during communications.It is micro- in the case where active RFID tag
The energy source (such as disposable battery) that the energy supply of controller is installed by its own is realized.In semi-active type RFID label tag
In the case where, the energy source of installation only supplies digital circuit, such as microcontroller.
Depending on type, RFID label tag the long-wave band of 125-134kHz, the short-wave band of 13.56MHz, 865-869MHz or
The UHF waveband or 2.45GHz of 950MHz and the SHF band operation of 5.8GHz.
The microcontroller activated in RFID label tag is decoded the order sent by reading device.Reading device is to sound
It should be encoded, and by with the antiphase reflection (warp of contactless, short-circuit (load modulation) or the alternating field of reading device transmission
The backscattering of modulation) mode field reduction, be modulated to radiation field.It is immutable that RFID label tag for example emits its own
Sequence number, affiliated partner information and data etc..Thus, RFID label tag itself does not generate field；On the contrary, it influences to read dress
The electromagnetic transmission field set.
In the case where the field device of automatic control technology has metal shell, metal shell material causes electromagnetic data
And/or the shielding of energy transmission, therefore transmission path is usually restricted to several centimetres, and therewith close to field device.Automatic
It is limited to several special circumstances using RFID technique in control technology field.So far, RFID technique field device general or
Remodeling is impossible to.
Summary of the invention
It is an object of the present invention to provide a kind of field devices with the functional automatic control technology of RFID.
It is achieved by the features that the target comprising: field device has for accommodating field device electronic device
Metal shell；It provides for the wireless communication between the rfid reader device and field device being arranged in outside field device
And/or the first RFID antenna and RFID chip of energy transmission；The adjacent walls of first RFID antenna and metal shell, wherein
Shielding is provided between the first RFID antenna and the adjacent wall of metal shell；Between first RFID antenna and the wall of metal shell
Spacing and the first RFID antenna and the adjacent wall of metal shell between shielding be dimensioned so that metal shell does not hinder
Wireless communication and/or energy transmission between rfid reader device and field device.In combination with the applicable different type of the present invention
RFID label tag is above-mentioned.In a given case, spacer materials appropriate are arranged between shielding and the first RFID antenna.
The more favourable improvement of the method for the present invention is arranged to, and metal shell has opening, can be closed by cable guide,
And wherein the first RFID antenna is integrated into cable guide.In this regard, it leads when RFID chip is also integrated into cable
It is particularly advantageous when into device.In this case, be provided with cable guide, such as by Pg screw connection, have metric thread
Screw connection or connect with field device by nut.It in the case of the embodiment, will be almost in each field device
In the cable guide that has provide as the position for RFID label tag.
The embodiment of field device of the invention is arranged to, and first be integrated into cable guide is realized by electric wire
Internal communication and/or energy transmission between RFID antenna and field device electronic device.Alternatively, with such side
Second RFID antenna is arranged in cable guide by formula, i.e., it makes it possible to wirelessly communicate with field device electronic device.
It is recessed in addition, being provided with metal shell and having in the housing region of arrangement RFID antenna.Preferably, the recessed quilt
Scale cun, so that the surface of metal shell and the first RFID antenna or the coating being arranged in RFID antenna substantially flush each other
Ground terminates.Such as by deep draw or by removing the sheathing material that will wherein arrange in the region of RFID antenna, come real
It is recessed in existing metal shell surface.
In conjunction with solution of the invention, further, on the recessed private side in face of field device electronic device
Third RFID antenna is provided.
In addition, when the corporate logo that be embodied as relief shape be disposed on metal shell or metal shell it is recessed in
When it is especially advantageous, wherein RFID antenna can be arranged in the embossment of company identifier or be arranged in below company identifier.
It is carried out between the first RFID antenna and external read device used in communication and energy transmission in addition, being provided with
Frequency is higher than the frequency used between the second RFID antenna and field device electronic device.The embodiment uses such physics
The saturating depth of principle, i.e. alternating field or radio wave depends on frequency.Although internal communication is in range, outside is logical
The range of letter should be in 1m or so.Thus, the advantageous embodiment of field device of the invention is arranged to RFID chip and addedly executes
The task of gateway.
In addition, be provided with the associated nonvolatile storage of RFID chip, store associated field in this region
Device data, wherein in the case where interrupting the energy supply to field device these can be read by external read device
Field equipment data.The data of storage, especially parameterize/data are constructed, it can be loaded into alternative in succession.This point
On, it is related to the clone of field device.Generally speaking, the data of storage are, for example, the nameplate data of field device, about scene
The information of the hardware of equipment and/or software, the data stored before being interrupted to the energy supply of field device (such as measurement number
According to, diagnostic data, meter reading etc.) and/or above-mentioned construction/supplemental characteristic.
Detailed description of the invention
Invention will now be explained in more detail based on the drawings, and attached drawing is shown as follows:
The section of the first embodiment of field device Fig. 1 of the invention, in this case, RFID component arrangement are set at the scene
In the region of standby cable guide；
Fig. 2 shows the sections of the second embodiment of field device of the invention, and in this case, RFID component is integrated into gold
Belong in shell；
Fig. 3 shows the further improvement of embodiment shown in Fig. 2, and wherein corporate logo is arranged on RFID component；With
And
Fig. 4 shows the section of the 3rd embodiment of field device of the invention, and in this case, RFID component is integrated into public affairs
In department's mark.
Specific embodiment
In automatic control technology, especially processes and manufacture the field device installed in automatic control technology and be used to record
And/or influence processing variable.It is sensor for record processing variable, such as, such as full of liquid level emasuring device, flow survey
Device, pressure and temperature measuring device, pH redox potential measuring device, conductivity measurement device etc. are measured, is remembered respectively
Record corresponding processing variable, full of liquid level, flow, pressure, temperature, pH value and conductibility.It is for influence processing variable
Actuator, such as, such as valve or pump, it can be changed in fluid flow or container in pipeline section by it and be full of liquid level.So
And in principle, all following equipment are referred to as field device, close to processed and applied and its transmission or processing correlation letter
Breath.Thus, it should be understood that the field device combined with the present invention is also remote I/O, radio adapter, or generally speaking it is
The device arranged with field level.The production of Endress+Hauser company and a large amount of this field devices of sale.
By paired cable or by field bus common in automatic control technology (FieldbusFoundation,
ProfibusPA, HART etc.) communicate with higher level's control unit (in Fig. 1 not separately shown) and from higher level's control unit
In the case where supplying energy, wired field device 1 has opening 9 in metal shell 2, and cable guide 10 can be integrated into this
In opening 9, wherein then cable guide loses the function of cable guiding.Cable guide 10 and shell 2 are specific, and are made
Field device 1 is obtained optimally to be suitble to prevailing processing variable (temperature, pressure etc.) in processing and be suitble in processing
The things of appearance (due to the potential danger for the medium that will be determined or will monitor in processing).
Fig. 1 shows the first embodiment of field device 1 of the invention, and in this case, RFID component 4,5 is arranged at the scene
In the region of the cable guide 10 of equipment 1.The RFID component being integrated into cable guide 10 especially includes the first RFID days
Line 5 carries out the communication with reading device 6 by it, and depends on embodiment, including RFID chip 4 and associated storage
Unit 15.
Additionally it is possible to which the second RFID antenna 5a is integrated into cable guide 10, on the one hand, carried out and closed by it
Join the internal communication of field device electronic device 3, on the other hand, carries out the communication with the first RFID antenna 5 also by it.At this
In the case where embodiment, thus field device electronic device 3 and reading device 6 are carried out fully wirelessly for example, by radio wave
Between communication.Certainly, the communication between the first RFID antenna 5 and field device electronic device 3 also (can not be shown by electric wire
It carries out out), wherein since RFID component to be integrated into cable guide 10, so guiding electric wire not in cable guide 10
There are problems.
Pass through so-called close-coupled, it is thus possible to read under the non-power supply state of equipment 1 at the scene and field device electricity
The internal communication of sub- device 3 even reads in the case where carrying out wireless communication completely and is stored in field device electronics device
Dynamic data in part 3.In addition, in this case, advantage is between RFID component 4,5 and field device electronic device 3
It is galvanically isolated.In addition, the RFID electronic device of RFID chip 4 can play gateway in the case where so-called near-field communication
Effect.Particularly, it can be used in the different frequencies of best match concrete application (internal or external communication) outwardly and inwardly communicated
Rate.
Influence in order to keep the influence of metallic walls 7 small, especially with respect to the external wireless electrical transmission by RFID technique
Small, implement two kinds of measures according to the present invention: the first RFID antenna 5 and the adjacent wall 7 of metal shell 2 separate；And as
Supplement provides shielding 8 between the first RFID antenna 5 and the adjacent wall 7 of metal shell 2.Preferably, shielding 8 is by ferromagnetic material
Composition.The wall 7 at interval and the first RFID antenna 5 and metal shell 2 between the first RFID antenna 5 and the wall 7 of metal shell 2
Between shielding 8 thickness and type be dimensioned so that metal shell 2 does not hinder, at least not exclusively hinder rfid reader device 6
Wireless communication and/or energy transmission between field device 1.The arrangement is particularly specific, so that passing through RFID technique
External wireless electrical transmission be likely to be breached preset distance.It is preferred that the preset distance is equal to about 1m.Thus, according to the present invention, with tool
There is the traditional solution of RFID label tag to compare, improves transmission and receiving efficiency.
Cable guide 10 is placed in the corresponding opening 9 of metal shell 2.By Pg screw connection 11 or pass through spiral shell
Mother makes the shell 2 of 10 field equipment connecting 1 of cable guide.The second modification with nut is not shown in Fig. 1.
Associated with RFID chip 4 is storage unit 15, it is preferable that it is with nonvolatile storage, wherein storing
Relevant field equipment data.Type depending on the data stored, these data are permanently present (for example, field device 1
Sequence number and the hardware and or software component about field device 1 information), or in a given case, between predetermined
Every or once scheduled event occurs once override these data, to can get the ginseng that finally changes for example in storage unit 15
Numberization (parametering)/construction data.If to the power failure of field device 1 (for example, at the scene equipment 1 it is overall therefore
In the case where barrier, or in the case where device replacement), then option is to read stored number by external read device 6
According to.Then, it can transmit that data in alternative, so as to omit the manual parameters instead of device.In this hair
It all can get the option in the case where all embodiments of bright field device 1.
Although being called reading device 6 always, certainly field device may also be written from reading device 6 in data by it
1, or write-in alternative.
Fig. 2 shows the second embodiments of field device 1 of the invention, and in this case, RFID component 4,5 is integrated into metal
In shell 2.In the explanation of attached drawing below, the difference of the embodiment relative to Fig. 1 will only be described in detail.
In the case of the embodiment, the wall 7 of metal shell 2 has recessed 12 in housing region, wherein being disposed with the
One RFID antenna 5 is used to carry out PERCOM peripheral communication with reading device 6 (being not shown in Fig. 2).By deep drawing technique or pass through
Material, which is removed, from the wall 7 of shell 2 forms cavity 12.Preferably, scale cun is recessed 12, i.e. 2 He of metal shell in this way
The surface of first RFID antenna 5 or the coating 14 in RFID antenna 5 substantially flush each other.Coating 14 is for protecting RFID days
Line 5 and sealing, which are recessed 12, keeps it not affected by environment.Coating 14 includes nonmetallic materials.In the case of the embodiment, it uses
In with antenna 5a, 5b of 3 internal communication of field device electronic device close to the housing region comprising recessed 12 and in its two sides
Upper arrangement.
Fig. 3 shows the further improvement of embodiment shown in Fig. 2.Herein, materialization is disposed on RFID component 4,5
For the company identifier of 13 form of embossment, such as corporate logo.Herein, in addition the embossment 13 of company identifier executes protective layer 14
Function.Since corporate logo or company identifier are generally positioned at exposed, external sufficiently visible and electromagnetism optimum position
In setting, so it ensures that PERCOM peripheral communication is not influenced by the processing of erecting bed equipment 1 simultaneously.
Shown in Fig. 4 in the case where the 3rd embodiment of field device 1 of the invention, RFID component 4,5 is integrated into
It is embodied as in the company identifier of 13 form of embossment.In the case that RFID component 4,5 is integrated into cable guide 10
Embodiment it is identical, the present embodiment also has the advantage that, solution of the invention can be established in traditional field device
Certainly scheme.Thus, it is possible to improve field device 1 with RFID technique.
List of numerals
1 field device
2 shells
3 field device electronic devices
4 RFID chips
5 first RFID antennas
5a RFID antenna
5b third RFID antenna
6 reading devices
7 walls
8 shieldings
9 openings
10 cable guides
11 Pg screw connections
12 is recessed
13 embossments/company identifier
14 coatings
15 storage units.
Claims (10)
1. it is used for the field device of automatic control technology, wherein the field device (1) has metal shell (2), the metal
Shell (2) is for accommodating field device electronic device (3), wherein the field device (1) has for being arranged in the scene
The of wireless communication and/or energy transmission between the external rfid reader device (6) of equipment (1) and the field device (1)
One RFID antenna (5) and RFID chip (4), wherein the adjacent wall of first RFID antenna (5) and the metal shell (2)
(7) separately, wherein being provided between first RFID antenna (5) and the adjacent wall (7) of the metal shell (2)
Shield (8), wherein interval between first RFID antenna (5) and the adjacent wall (7) of the metal shell (2) and
The shielding (8) between first RFID antenna (5) and the adjacent wall (7) of the metal shell (2) is dimensioned,
So that the metal shell (2) does not hinder the wireless communication between the rfid reader device (6) and the field device (1)
And/or energy transmission.
2. field device according to claim 1,
Wherein, the metal shell (2) has opening (9), and the opening (9) can be closed by cable guide (10), and
Wherein first RFID antenna (5) is integrated into the cable guide (10).
3. field device according to claim 2,
Wherein, the RFID chip (4) is integrated into the cable guide (19).
4. field device described in one in -3 according to claim 1,
Wherein be integrated by electric wire first RFID antenna (5) and the scene in the cable guide (10)
Communication and/or energy transmission between device electronics (3).
5. field device described in one in -3 according to claim 1,
It wherein, will in such a way that the second RFID antenna (5a) can be carried out wireless communication with the field device electronic device (3)
Second RFID antenna (5a) is arranged in the cable guide (10).
6. field device according to claim 2 or 3,
Wherein, by Pg screw connection (11) or by nut, by the cable guide (10) and the field device (1) phase
Connection.
7. field device according to claim 1,
Wherein, the metal shell (2) described in the housing region for arranging first RFID antenna (5) has recessed (12).
8. field device according to claim 7,
Wherein, recessed (12) are by scale as follows cun: so that the metal shell (2) and first RFID antenna
(5) surface or the coating (14) being arranged on first RFID antenna (5) terminate with substantially flushing each other.
9. field device according to claim 7 or 8,
Wherein, the 3rd is provided with RFID days on the inside in face of recessed (12) of the field device electronic device (3)
Line (5b).
10. field device according to claim 7 or 8,
The company identifier (16) that wherein would embody embossment (13) form is arranged on the metal shell (2), Huo Zhebu
It sets in recessed (12) of the metal shell (2), and first RFID antenna (5) is wherein arranged in the public affairs
Take charge of identifier the embossment (13) in or the company identifier (13) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711435543.6A CN109961125A (en) | 2017-12-26 | 2017-12-26 | Field device for automatic control technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711435543.6A CN109961125A (en) | 2017-12-26 | 2017-12-26 | Field device for automatic control technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109961125A true CN109961125A (en) | 2019-07-02 |
Family
ID=67022422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711435543.6A Pending CN109961125A (en) | 2017-12-26 | 2017-12-26 | Field device for automatic control technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109961125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375425A (en) * | 2019-09-13 | 2022-04-19 | 恩德莱斯和豪瑟尔欧洲两合公司 | Automated field device |
-
2017
- 2017-12-26 CN CN201711435543.6A patent/CN109961125A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375425A (en) * | 2019-09-13 | 2022-04-19 | 恩德莱斯和豪瑟尔欧洲两合公司 | Automated field device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190702 |
|
| WD01 | Invention patent application deemed withdrawn after publication |