CN117034995A - Fan bearing bolt looseness detection tag, system and method - Google Patents
Fan bearing bolt looseness detection tag, system and method Download PDFInfo
- Publication number
- CN117034995A CN117034995A CN202310992123.7A CN202310992123A CN117034995A CN 117034995 A CN117034995 A CN 117034995A CN 202310992123 A CN202310992123 A CN 202310992123A CN 117034995 A CN117034995 A CN 117034995A
- Authority
- CN
- China
- Prior art keywords
- detection
- layer
- adhesive layer
- tag
- bearing bolt
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000010410 layer Substances 0.000 claims abstract description 53
- 239000012790 adhesive layer Substances 0.000 claims abstract description 31
- 239000011241 protective layer Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- 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
-
- 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
- G06K19/07722—Physical layout of the record carrier the record carrier being multilayered, e.g. laminated sheets
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a fan bearing bolt looseness detection tag, a fan bearing bolt looseness detection system and a fan bearing bolt looseness detection method, which are used for solving the problem that the existing method cannot accurately and timely judge the looseness of each nut. The invention comprises a lower end adhesive layer, a mounting layer, an electronic circuit, an upper end adhesive layer and an upper end protective layer which are sequentially arranged from bottom to top; the lower adhesive layer, the mounting layer, the electronic circuit, the upper adhesive layer and the upper protective layer are recessed from two ends in the width direction to the middle to form a notch; the upper end protection layer is an identification layer and is provided with identification information of a detection tag; the identification information comprises a number and a code; the upper end adhesive layer is used for adhering an upper end protective layer; the electronic circuit is used for transmitting signals to the outside; the mounting layer is used for mounting an electronic circuit; the lower adhesive layer is used for pasting the detection label at the test position. The method also comprises a detection terminal and a fan bearing bolt loosening detection method.
Description
Technical Field
The invention relates to a detection method, in particular to a fan bearing bolt looseness detection tag, a system and a method.
Background
With the increasing environmental remediation in recent years, china gradually changes from coal power generation to environment-friendly wind power generation, the wind power generation capacity is increased year by year, and the wind power generation capacity is a main form of wind energy utilization nowadays. With the increase of the installed quantity of the fan and the longer time of the fan, the health operation and maintenance of the fan become more and more important, and the detection of the health state of the fan by various sensors is particularly important, so that the condition of the fan can be forecasted in advance, the safety accident is avoided, and important losses are recovered for wind field owners.
Under the condition that the fan blade bearing rotates at a high speed and is stressed, the problems of bolt fracture, nut falling, gear belt fracture and the like can occur due to long-time loss, if the problems cannot be found timely, the impeller is unbalanced, the generated energy is influenced, the fan blade is swept or falls down due to heavy weight, serious safety production accidents are caused, and the healthy operation of the fan is seriously threatened.
At present, most of the industries are inspected by a manual inspection mode of regular organization, and some of the industries are inspected by arranging tinfoil paper, lacquer wires and the like on nuts, and judging whether the nuts are broken according to the states of the tinfoil paper and the lacquer wires, but the methods have the problems of low reliability and inaccurate detection results. Still another part of the wind turbine is inspected in a video mode, and the video has the defect that only a limited 2-3 nuts can be seen by one camera as long as the wind turbine is not changed, but the whole wind turbine is provided with 90 nuts in a conventional mode, and enough cameras are not installed on the wind turbine in a space, so that the wind turbine is not acceptable from the cost aspect.
Disclosure of Invention
The invention provides a fan bearing bolt looseness detection tag, a fan bearing bolt looseness detection system and a fan bearing bolt looseness detection method, which are used for solving the problem that the existing method cannot accurately and timely judge the looseness of each nut.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a fan bearing bolt looseness detection label is characterized in that: the detection tag is in a strip shape and comprises a lower adhesive layer, a mounting layer, an electronic circuit, an upper adhesive layer and an upper protective layer which are sequentially arranged from bottom to top;
the lower adhesive layer, the mounting layer, the electronic circuit, the upper adhesive layer and the upper protective layer are recessed from two ends in the width direction to the middle to form a notch;
the upper end protection layer is an identification layer and is provided with identification information of a detection tag; the identification information comprises a number and a code;
the upper end adhesive layer is used for adhering an upper end protective layer;
the electronic circuit is used for transmitting signals to the outside;
the mounting layer is used for mounting an electronic circuit;
the lower adhesive layer is used for pasting the detection label at the test position.
Further, the adhesive layer also comprises a lower end protective layer arranged below the lower end adhesive layer; the lower adhesive layer is used for preventing the break of the notch in the transportation process.
Further, the electronic circuit is an Inlay layer of the radio frequency RFID.
Further, the upper end protection layer is made of plastic; the upper end glue layer is made of high-strength glue; the mounting layer is made of an insulating and easily-deformable material, and the insulating and easily-deformable material comprises resin, foam cotton or plastic; the lower end protective layer is made of PET/PP/coated paper.
A fan bearing bolt looseness detecting system which is characterized in that: the detection terminal is used for scanning the detection tag and comprises a power module, a communication module, a processor module, a radio frequency transceiver module and an antenna which are connected in sequence;
the radio frequency transceiver module transmits signals and receives signals through an antenna, performs signal modulation and demodulation, and acquires information of the detection tag;
the processor module processes the information of the detection tag acquired by the radio frequency transceiver module so as to judge whether the bolt is loosened;
the communication module is used for completing communication with an external environment;
the power module is responsible for providing stable power for the communication module, the processor module and the radio frequency transceiver module.
Further, the communication module supports Ethernet, RS485, profibus and CAN hardware, and simultaneously supports modbus-RTU, modbus-TCP, TCP/IP, profibus and canOpen protocols.
The detection method based on the fan bearing bolt looseness detection system is characterized by comprising the following steps of:
step 1, sticking a detection tag on the junction of a nut and a bolt of each fan bearing bolt in a bending mode, wherein bending is required from a notch, and the notch faces to the junction of the nut and the bolt;
step 2, arranging a plurality of detection terminals on the fan so that all detection labels are covered by the plurality of detection terminals;
step 3, the detection terminal communicates with the detection tag rotating nearby in real time; if the detection terminal cannot receive the signal of the detection tag, the nut and bolt are loosened.
Further, if the detection range of the detection terminals is larger, so that the plurality of detection terminals detect the same detection tag, when the communication module transmits information to the external system, the external system can automatically determine that the information is repeated, and one of the repeated information is marked as effective data.
Compared with the prior art, the invention has the following beneficial effects:
1. the power generation sub-tag provided by the invention has strong anti-interference capability and can be suitable for various environments. The electronic tag passes through the upper end protection layer. Under the common protection of lower extreme protective layer and erection bed, can adapt to adverse circumstances, and long service life.
2. According to the electronic tag provided by the invention, the detection terminal can read the information of a plurality of electronic tags at the same time in the detection range, so that the recognition speed is greatly improved.
3. The electronic tag is convenient to install, and can test all bolts and nuts, so that the detection difficulty is greatly reduced.
4. The electronic tag disclosed by the invention does not influence the inspection of the nut in the inspection process after being installed.
Drawings
FIG. 1 is a schematic diagram of a detection tag according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the installation of a detection tag according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detection terminal and a detection tag mounted on a pitch bearing in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a detection terminal in an embodiment of the present invention.
Wherein, the reference numerals are as follows:
1. the detection label comprises a detection label body 11, a lower end protective layer 12, a lower end adhesive layer 13, a mounting layer 14, an electronic circuit 15, an upper end adhesive layer 16 and an upper end protective layer;
2. the device comprises a detection terminal 21, a power supply module 22, a communication module 23, a processor module 24, a ray receiving and transmitting module 25 and an antenna;
3. fan bearing surface, 31, bolt, 32, nut.
Detailed Description
The invention is further described with reference to the drawings and detailed description.
The invention provides a fan bearing bolt looseness detection label as shown in fig. 1, wherein the detection label 1 is in a strip shape and comprises a lower end protection layer 11, a lower end adhesive layer 12, a mounting layer 13, an electronic circuit 14, an upper end adhesive layer 15 and an upper end protection layer 16 which are sequentially arranged from bottom to top. The detection tag is an RFID tag in this embodiment.
The lower protective layer 11, the lower adhesive layer 12, the mounting layer 13, the electronic circuit 14, the upper adhesive layer 15, and the upper protective layer 16 are recessed toward the middle at both ends in the width direction to form a notch, and the position of the notch finally forms a frangible portion.
The upper protective layer 16 is positioned on the first layer and is a marking layer, and is made of PET/PP/coated paper, and mainly, marking information of labels, such as numbers, codes and the like, are printed on the marking layer; the upper adhesive layer 15 is positioned on the second layer and used for pasting the first layer; the mounting layer 13 on the third layer is used for mounting the electronic circuit 14 and raising the height not less than 2mm, preventing the antenna from being too close to the metal surface to influence signal reception. The mounting layer 13 is made of insulating deformable materials such as resin, foam cotton or plastic; the electronic circuit 14, namely an Inlay layer of the radio frequency RFID, comprises an RFID chip, an antenna, a protective layer and the like; the fifth layer is the lower end glue layer 12, which is made of high-strength glue and is mainly used for being conveniently adhered to the positions of the bolts 31 and the nuts 32. The sixth layer is a lower protective layer 11, usually made of plastic, for preventing damage to the frangible portion during normal testing, transportation and installation, and is removed during installation and then the test label can be attached to the test site by a lower adhesive layer 12.
Inlay is a term specific to the RFID industry, also known as Inlay, and refers to a pre-laminated product that is laminated together by a multi-layer PVC sheet containing chips and coils. Typically consisting of two or three layers. The surface of the product has no printing pattern, and the Inlay product is suitable for the early mass production of various cards.
Taking INLAY with a three-layer structure as an example, a layer of PVC material with 0.01mm is arranged on the upper layer, rectangular holes are drilled, a layer of PVC material with 0.024mm is arranged in the middle layer, small holes are drilled, a chip is embedded in the small holes, and an electronic coil is buried in the layer and connected with the chip to form a radio frequency loop. The lower layer is made of PVC material with the thickness of 0.01mm, and plays a role in compensating the thickness.
After the upper end protection layer 11 in the detection tag 1 is attached to the joint of the bolt 31 and the nut 32 in an L-shape, the lower end protection layer 16 located at the outermost layer is removed as shown in fig. 2. When the nut 32 is loosened, the detection tag 1 is driven to move, and finally the detection tag 1 is broken from a frangible part (namely a notch), so that the detection tag 1 is invalid, and the detection terminal 2 cannot detect the detection tag 1.
The invention also provides a detection terminal, wherein the detection terminal 2 is used for scanning the detection tag 1, and the detection terminal 2 and the detection tag 1 are matched for use together, so that a detection system for loosening of the fan bearing bolt is formed. As shown in fig. 4, the detection terminal 2 includes a power module 21, a communication module 22, a processor module 23, a radio frequency transceiver module 24, and an antenna 25, which are sequentially connected.
The radio frequency transceiver module 24 is mainly used for transmitting signals and receiving signals through the antenna 25, modulating and demodulating the signals, and obtaining information of the detection tag.
The processor module 23 is mainly used for controlling the detection terminal, and can control the identification of the detection tag 1 so as to judge whether a loose bolt exists; the background communication is carried out, and the setting of the detection terminal 2 and the uploading of the detection result are completed; self-checking of the system, logging, etc.
The communication module 22 mainly completes communication with the outside such as a server and the like, and designs and supports hardware support such as Ethernet, RS485, profibus, CAN and the like. And protocols such as modbus-RTU, modbus-TCP, TCP/IP, profibus, canOpen and the like are supported.
The power module 21 is mainly responsible for supplying power to the whole system and providing stable power for each module.
When the detection tag 1 and the detection terminal 2 are applied, as shown in fig. 3, the detection tag 1 is uniformly adhered to the pitch bearing in the circumferential direction, so that each nut on the pitch bearing is correspondingly adhered with one detection tag 1, and the detection tag 1 is adhered to a nut bolt in an L-shaped manner as shown in fig. 2; according to the number and distribution of the bolts in the circumferential direction, the positions of three 120-degree indexing bolts are marked, so that all nut bolts in the circumferential direction are divided into three parts. The detection terminal 2 is mounted on a pitch bearing and is located at the center of the circumference. The detection terminal 2 is operated to detect whether or not the detection terminal 2 can recognize all the detection tags 1 in the circumferential direction, if so, the detection terminal 2 is installed normally, and if the number of the recognition is less than the number of the detection tags in the circumferential direction, the position where the detection terminal 2 is installed is adjusted until all the detection tags in the circumferential direction are detected. If the detection range of the detection terminals 2 is large, so that the plurality of detection terminals 2 detect the same detection tag 1, the communication module 23 automatically determines that the information is repeated when transmitting the information to an external system, and marks one of the repeated data as valid data.
Claims (8)
1. A fan bearing bolt looseness detects label, its characterized in that: the detection label (1) is in a strip shape and comprises a lower end adhesive layer (12), a mounting layer (13), an electronic circuit (14), an upper end adhesive layer (15) and an upper end protective layer (16) which are sequentially arranged from bottom to top;
the lower end adhesive layer (12), the mounting layer (13), the electronic circuit (14), the upper end adhesive layer (15) and the upper end protective layer (16) are recessed towards the middle at two ends in the width direction to form a notch;
the upper end protection layer (16) is an identification layer and is provided with identification information of the detection tag (1); the identification information comprises a number and a code;
the upper end adhesive layer (15) is used for adhering an upper end protective layer (16);
the electronic circuit (14) is used for transmitting signals to the outside;
the mounting layer (13) is used for mounting electronic circuits (14);
the lower end adhesive layer (12) is used for adhering the detection label (1) at a test position.
2. The fan bearing bolt looseness detection tag of claim 1, wherein:
the lower end protective layer (11) is arranged below the lower end adhesive layer (12); the lower end adhesive layer (12) is used for preventing the fracture of the notch in the transportation process.
3. The fan bearing bolt loosening detection tag according to claim 1 or 2, wherein:
the electronic circuit (14) is an Inlay layer of radio frequency RFID.
4. A fan bearing bolt loosening detection tag as claimed in claim 3, wherein: the upper end protection layer (16) is made of plastic; the upper end glue layer (15) is made of high-strength glue; the mounting layer (13) is made of an insulating and deformable material, wherein the insulating and deformable material comprises resin, foam cotton or plastic; the lower end protective layer (11) is made of PET/PP/coated paper.
5. A fan bearing bolt looseness detecting system which is characterized in that: the detection tag comprises a detection tag (1) and a detection terminal (2) according to claim 1, wherein the detection terminal (2) is used for scanning the detection tag (1), and the detection terminal (2) comprises a power supply module (21), a communication module (22), a processor module (23), a radio frequency transceiver module (24) and an antenna (25) which are connected in sequence;
the radio frequency transceiver module (24) transmits signals and receives signals through the antenna (25) and carries out signal modulation and demodulation to obtain information of the detection tag (1);
the processor module (23) processes the information of the detection tag (1) acquired by the radio frequency receiving and transmitting module (24) so as to judge whether the bolt is loosened;
the communication module (22) is used for completing communication with the external environment;
the power module (21) is responsible for providing stable power for the communication module (22), the processor module (23) and the radio frequency transceiver module (24).
6. The fan bearing bolt looseness detection system of claim 5, wherein: the communication module (22) supports Ethernet, RS485, profibus and CAN hardware, and simultaneously supports modbus-RTU, modbus-TCP, TCP/IP, profibus and canOpen protocols.
7. A detection method based on the fan bearing bolt looseness detection system according to claim 5, which is characterized by comprising the following steps:
step 1, sticking a detection tag (1) at the junction of a nut and a bolt of each fan bearing bolt in a bending mode, wherein bending is required from a notch, and the notch is opposite to the junction of the nut and the bolt;
step 2, arranging a plurality of detection terminals (2) on the fan, so that all detection labels (1) are covered by the plurality of detection terminals (2);
step 3, the detection terminal (2) communicates with the detection tag (1) rotating nearby in real time; if the detection terminal cannot receive the signal of the detection tag (1), the nut and the bolt are loosened.
8. The method for detecting loosening of bearing bolts of a fan according to claim 7, wherein the method comprises the steps of:
if the detection range of the detection terminals (2) is large, and the plurality of detection terminals (2) detect the same detection tag (1), when the communication module (23) transmits information to an external system, the external system automatically judges that the information is repeated, and marks one of the repeated information as effective data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310992123.7A CN117034995A (en) | 2023-08-08 | 2023-08-08 | Fan bearing bolt looseness detection tag, system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310992123.7A CN117034995A (en) | 2023-08-08 | 2023-08-08 | Fan bearing bolt looseness detection tag, system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117034995A true CN117034995A (en) | 2023-11-10 |
Family
ID=88640682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310992123.7A Pending CN117034995A (en) | 2023-08-08 | 2023-08-08 | Fan bearing bolt looseness detection tag, system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117034995A (en) |
-
2023
- 2023-08-08 CN CN202310992123.7A patent/CN117034995A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7400054B2 (en) | Method and assembly for detecting blade status in a wind turbine | |
| JP4514374B2 (en) | RF-ID inspection system | |
| CN202159352U (en) | Temperature measurement system used for train part | |
| US7267286B2 (en) | System and method for batch conversion of RFID tag to RFID label | |
| CN101758836B (en) | Proofreading method and system for mileage of track inspection car | |
| CN205540861U (en) | RFID laber sticker convenient to printing die cuts | |
| US20100097220A1 (en) | Wireless information system for wind turbine components | |
| US20070216525A1 (en) | Rfid Paper Manufacturing Apparatus and Inspection Method of Rfid Paper Manufacturing Apparatus | |
| WO2007132053A1 (en) | A method for manufacturing products comprising transponders | |
| CN112733976A (en) | Pantograph carbon slide abrasion detection system | |
| CN105825388B (en) | Finished automobile physical object tracing system and method based on RFID technology | |
| CN117034995A (en) | Fan bearing bolt looseness detection tag, system and method | |
| CN107284474A (en) | The active positioning method of metallurgic railway rolling stock | |
| JP4656779B2 (en) | RF-ID inspection system | |
| CN106845588B (en) | High-temperature-resistant RFID (radio frequency identification) tire electronic tag and manufacturing method thereof | |
| AU2014299212B2 (en) | Noise collection system for belt conveyor | |
| JP3579158B2 (en) | Conveyor belt and method and apparatus for detecting vertical crack in conveyor belt | |
| CN204719970U (en) | A kind of non-contact vehicle identifies truck scale metering system automatically | |
| CN204702156U (en) | Based on the transport tape transport plane transport tape detecting device of RFID rf-mode | |
| KR101303886B1 (en) | Nfc label tag encoding system using qr cose and the method thereof | |
| CN201607747U (en) | Detecting device used for high-density ultra-high frequency radio-frequency label | |
| CN114021594A (en) | Positioning system of labeler | |
| CN220264183U (en) | Automatic detect flange and cracked structure of baffle in flange area | |
| CN104900066A (en) | Automatic contactless vehicle identification truck scale metering system | |
| CN101777237A (en) | Curtain-type intelligent safe detection device and detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |