CN113218299B - Bolt detection device and system based on double-ring patch antenna with label - Google Patents
Bolt detection device and system based on double-ring patch antenna with label Download PDFInfo
- Publication number
- CN113218299B CN113218299B CN202110426852.7A CN202110426852A CN113218299B CN 113218299 B CN113218299 B CN 113218299B CN 202110426852 A CN202110426852 A CN 202110426852A CN 113218299 B CN113218299 B CN 113218299B
- Authority
- CN
- China
- Prior art keywords
- bolt
- ring
- rfid
- antenna
- component
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
Abstract
The invention relates to a bolt detection device based on a double-ring patch antenna with a label, which is used for detecting whether a bolt for connecting two connecting members is loosened in a rotating mode.
Description
Technical Field
The invention relates to a bolt looseness monitoring technology, in particular to a bolt detection device and system based on a double-ring patch antenna with a tag.
Background
The bolt is widely applied to connection in the fields of civil engineering, traffic, aerospace and the like, and has the characteristics of high strength and detachability, so that the bolt has wider applicability. However, the bolt is easy to loosen under the action of long-term load, and serious potential safety hazards exist for the structure. Therefore, in the structure using the bolt connection, it is necessary to perform regular bolt monitoring to avoid structural damage due to loosening of the bolt.
Currently, the commonly used bolt monitoring techniques are: a bolt looseness monitoring method and a strain gauge electrical measurement method based on piezoelectric admittance are disclosed.
According to the bolt looseness monitoring method based on piezoelectric admittance, a piezoelectric sensor is pasted on a bolt, whether the bolt is loosened or not can be judged by measuring the peak frequency change in a piezoelectric admittance diagram, but the piezoelectric sensor needs to be excited through a lead, needs an expensive high-precision impedance analyzer, and is difficult to be applied to engineering practice in a large range.
The strain gage electrical measurement method accurately measures the bolt axial force by measuring the strain of a bolt screw, but the bolt axial force is not large, so that the measurement precision is not high, and the strain gage electrical measurement method is limited by installation conditions and is difficult to be widely applied.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a bolt detection device and system based on a double-ring patch antenna with a tag, which have high precision, convenient detection and wide application range.
The purpose of the invention can be realized by the following technical scheme:
a bolt detection device based on a double-ring patch antenna with a label is used for detecting whether a bolt for connecting two connecting members is loosened in a rotating mode or not and comprises an RFID label which is arranged on the connecting members and sleeved on the outer edge of the bolt, wherein the RFID label comprises a first assembly, a second assembly and a third assembly, the second assembly is fixedly arranged on the connecting members, the first assembly and the third assembly are fixedly connected with each other and are arranged in a matched mode with the second assembly, an antenna capacitor of the RFID label is formed between the first assembly and the second assembly, a bolt fixing portion for sleeving the outer edge of the bolt is arranged on the third assembly, and the first assembly and the third assembly can rotate along with the bolt;
when the bolt takes place rotatory not hard up, drive first subassembly and third subassembly and rotate jointly, first subassembly and second subassembly between the contained angle change, RFID label's antenna capacitance change, lead to antenna second order resonant frequency to change, realize the rotatory not hard up detection of bolt.
Further, the second assembly comprises a dielectric plate arranged on the connecting member, and an outer ring, a second rectangular patch, an RFID chip and a feed microstrip line which are respectively arranged on the dielectric plate, wherein a circular opening for installing the first assembly is formed in the dielectric plate, the second rectangular patch is arranged at the inner edge of the outer ring, and the RFID chip is connected with the outer ring through the feed microstrip line.
Further preferably, an opening is formed in the outer ring.
Further, the first component comprises an annular panel, an inner ring and a first rectangular patch, wherein the inner ring and the first rectangular patch are arranged on the annular panel respectively, the first rectangular patch is arranged at the outer edge of the inner ring, the diameter of the inner ring is smaller than that of the outer ring, the annular panel covers the dielectric plate, the inner ring is sleeved in the outer ring, the inner ring and the outer ring form an antenna capacitor of the RFID tag, and the inner edge of the annular panel is fixedly connected with the third component.
Further, when the bolt is not loosened in a rotating mode, the inner circular ring and the outer circular ring are matched with each other to be located at an initial position;
when the bolt takes place rotatory not hard up, the annular panel that drives third subassembly and first subassembly rotates jointly, interior torus for the position of outer torus take place to rotate, the contained angle of first rectangle paster and second rectangle paster change, the antenna capacitance of RFID label change, lead to antenna second order resonant frequency to change, realize the rotatory not hard up detection of bolt.
Furthermore, the third assembly comprises a circular panel with a hexagonal through hole in the middle, the hexagonal through hole is matched with the outer edge of the nut of the bolt and used for stably nesting the outer edge of the nut of the bolt, and the outer edge of the circular panel is fixedly connected with the inner edge of the annular panel.
Preferably, the material of the inner circular ring, the outer circular ring, the first rectangular patch and the second rectangular patch is brass, and the material of the dielectric plate is RT 5880.
A bolt detection system based on a tagged double-circular patch antenna, comprising an RFID tag according to claim-and an RFID reader communicatively connected to each other, the RFID reader being configured to read information from the RFID tag and perform data processing;
when the system works, the RFID reader transmits electromagnetic wave signals to activate the RFID chip, detects the second-order resonant frequency drift amount of the antenna, obtains the rotation angle of the bolt according to the influence relation between the second-order resonant frequency drift amount of the antenna and the relative included angle change amount of the rectangular patch, and judges whether rotation loosening occurs.
Further, the RFID reader detects and obtains the second-order resonant frequency of the antenna in the RFID tag by searching the transmitting frequency when the minimum transmitting power for activating the RFID chip reaches the minimum value.
Furthermore, the RFID reader transmits modulated electromagnetic wave signals to the RFID tags, codes corresponding to the RFID tags can be identified, and when a plurality of RFID tags are arranged in the scanning range of the RFID reader, the RFID reader marks the bolt state of each measuring point according to the codes of the tags, and positions the bolt which is loosened in rotation.
Compared with the prior art, the invention has the following advantages:
1) the bolt monitoring device can sense the angle change of the bolt, and the first component and the second component are arranged, so that the drift amount of the second-order resonant frequency of the antenna and the angle change of the bolt have a definite relation in a fixed range, and meanwhile, the first-order resonant frequency of the antenna can be kept unchanged, and the bolt monitoring device can be used as a tag for identifying a sensor, and has the advantages of high precision, convenience in detection and wide application range;
2) the RFID reader can wirelessly detect the drift amount of the second-order resonant frequency of the antenna, and accordingly calculates the rotation angle of the nut caused by the loosening of the bolt, so that the wireless detection of the loosening of the bolt is realized;
3) the RFID chip can store simple information such as ID, position and the like of the patch antenna, realize the loosening monitoring of a plurality of bolts in a large range and quickly position the loosened bolts;
4) when the RFID tag in the system is used, the bolt is not required to be modified during installation, and the RFID tag can be directly installed on the existing bolt, so that the system is economical and practical, and the cost is reduced.
Drawings
FIG. 1 is a perspective view of the mounting structure of the device of the present invention;
FIG. 2 is a top view of the mounting structure of the apparatus of the present invention;
FIG. 3 is a side view of the mounting structure of the apparatus of the present invention;
FIG. 4 is a schematic structural view of a first assembly;
FIG. 5 is a schematic view of a second assembly;
FIG. 6 is a schematic structural view of a third assembly;
FIG. 7 is a schematic diagram of the structure of an RFID tag;
FIG. 8 is a schematic diagram of the system of the present invention.
The RFID tag comprises an RFID tag 1, an RFID tag 2, a bolt 3, a connecting component 4, a first assembly 41, an inner circular ring 42, a first rectangular patch 5, a second assembly 51, an outer circular ring 52, a second rectangular patch 53, a feed microstrip line 54, an RFID chip 55, an opening 6, a third assembly 7 and an RFID reader.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
As shown in fig. 8, the present invention provides a bolt detection system based on a tagged double-ring patch antenna, comprising an RFID tag 1 and an RFID reader 7, which are communicatively connected with each other, wherein the RFID reader 7 is used for reading information of the RFID tag 1 and performing data processing, as shown in fig. 1-7, the RFID tag 1 is a bolt detection device based on a tagged double-ring patch antenna, and is used for detecting whether a bolt 2 connecting two connecting members 3 is loosened by rotation, the bolt detection system comprises an RFID tag 1 disposed on the connecting member 3 and sleeved on an outer edge of the bolt 2, the RFID tag 1 comprises a first component 4, a second component 5 and a third component 6, the second component 5 is fixedly disposed on the connecting member 3, the first component 4 and the third component 6 are fixedly connected with each other and are disposed in cooperation with the second component 5, an antenna capacitance of the RFID tag 1 is formed between the first component 4 and the second component 5, the third component 6 is provided with a bolt fixing part for sleeving the outer edge of the bolt 2, and the first component 4 and the third component 6 can rotate along with the bolt 2;
when the bolt 2 is rotated and loosened, the first component 4 and the third component 6 are driven to rotate together, the included angle between the first component 4 and the second component 5 is changed, the antenna capacitance of the RFID tag 1 is changed, the second-order resonant frequency of the antenna is changed, and the bolt rotation and looseness detection is realized.
As shown in fig. 5, the second assembly 5 includes a dielectric plate disposed on the connecting member 3, and an outer ring 51, a second rectangular patch 52, an RFID chip 54 and a feeding microstrip line 53 respectively disposed on the dielectric plate, wherein a circular opening is formed in the dielectric plate for mounting the first assembly 4, the second rectangular patch 52 is disposed at an inner edge of the outer ring 51, and the RFID chip 54 is connected to the outer ring 51 through the feeding microstrip line 53. The outer ring 51 is also provided with an opening 55.
As shown in fig. 4, the first component 4 includes an annular panel, and an inner ring 41 and a first rectangular patch 42 respectively disposed on the annular panel, the first rectangular patch 42 is disposed at an outer edge of the inner ring 41, a diameter of the inner ring 41 is smaller than a diameter of the outer ring 51, the annular panel covers the dielectric plate, the inner ring 41 is sleeved in the outer ring 51, the inner ring 41 and the outer ring 51 form an antenna capacitor of the RFID tag 1, and an inner edge of the annular panel is fixedly connected to the third component 6.
As shown in fig. 5, the third assembly 6 includes a circular panel having a hexagonal through hole formed in the middle thereof, the hexagonal through hole is engaged with the outer edge of the nut of the bolt 2 for stably nesting the outer edge of the nut of the bolt 2, and the outer edge of the circular panel is fixedly connected with the inner edge of the annular panel.
When the bolt 2 is not loosened in a rotating mode, the inner ring 41 and the outer ring 51 are matched with each other to be in an initial position;
when the bolt 2 is loosened in a rotating mode, the annular panels of the third component 6 and the first component 4 are driven to rotate together, the inner ring 41 rotates relative to the outer ring 51, the included angle between the first rectangular patch 42 and the second rectangular patch 52 changes, the antenna capacitance of the RFID tag 1 changes, the second-order resonant frequency of the antenna changes, and the bolt loosening in a rotating mode is detected.
In this embodiment, the inner ring 41, the outer ring 51, the first rectangular patch 42, and the second rectangular patch 52 are made of brass, and the dielectric plate material is RT 5880.
When the system works, the RFID reader 7 emits an electromagnetic wave signal to activate the RFID chip 54, detects the second-order resonant frequency drift amount of the antenna, obtains the rotating angle of the bolt 2 according to the influence relation between the second-order resonant frequency drift amount of the antenna and the relative included angle change amount of the rectangular patch, and judges whether the rotation loosening occurs.
The RFID reader 7 detects the second-order resonant frequency of the antenna in the RFID tag 1 by finding the transmitting frequency at which the minimum transmitting power for activating the RFID chip 54 reaches the minimum value.
The RFID reader 7 emits modulated electromagnetic wave signals to the RFID tags 1, codes corresponding to the RFID tags 1 can be identified, and when the RFID reader 7 arranges a plurality of RFID tags 1 in a scanning range, the RFID reader 7 marks the bolt state of each measuring point according to the codes of each tag, and positions the bolt which is loosened in rotation.
The third component 6 and the first component 4 are connected by glue to realize rotation synchronization, the third component 6 and the first component 4 are stably fixed on the outer edge of the nut in an embedded mode and can rotate along with the nut, and the third component 6 and the first component 4 cover the upper surface of the second component 5; the inner circular ring 41 and the outer circular ring 51 are matched with each other at initial positions, and the inner circular ring 41 and the outer circular ring 51 form an antenna capacitor of the electronic tag; when the annular panel of the first component 4 rotates in the third component 5, the position of the inner ring 41 relative to the outer ring 51 rotates, the included angle between the first rectangular patch 42 and the second rectangular patch 52 changes, the capacitance of the internal part of the antenna changes, the second-order resonant frequency of the antenna in the equivalent circuit changes, and the first-order resonant frequency does not change;
the invention is suitable for monitoring the working state of a common bolt in engineering, a sensor is required to be arranged on a bolt and nut rod piece to be tested which is fastened during measurement, when the bolt 2 to be tested rotates relative to a connecting member 3 due to looseness, a third assembly 6 and a first assembly 4 rotate together along with a nut synchronously, and a second assembly 5 is fixed on the connecting member 3, so that an inner ring 41 in the first assembly 4 and an outer ring 51 in the second assembly 5 rotate relatively, the included angle of a first rectangular patch 42 and a second rectangular patch 52 changes, the internal capacitance of an antenna is disturbed, and the second-order resonant frequency of the antenna is shifted.
For bolts 2 of different specifications, the sizes of the components in the invention can be adjusted and re-optimized to meet different requirements. According to the specification, the mechanical parameters and the thread pitch of the bolt 2, the rotation angle of the nut when the bolt changes from the preset pretightening force state to the completely pretightening force losing state can be determined. When the bolt 2 is loosened on the connected component 3, the inner ring 41 and the outer ring 51 can rotate relatively, the included angle between the rectangular patch 42 and the rectangular patch 52 changes, the second-order resonant frequency of the antenna changes, and the characteristic can be used as an indicative index for judging that the bolt changes from a state with pretightening force to a state without pretightening force. The first-order resonant frequency of the antenna is kept unchanged, and the characteristic can be used as a tag to identify a specific loose bolt.
The RFID tag 1 is used as a sensor for monitoring the loosening and rotating angle of a nut of the bolt; referring to embodiment 1, the RFID tag 1 is mounted on the bolt to be measured 3 and the connected member 3, and is responsible for converting information on the nut rotation angle of the bolt to be measured 2 into an electromagnetic wave signal and transmitting it to the reader 7. The RFID tag comprises an antenna and a chip, and the inner circular ring plays a role of a sensing unit in angle measurement. Along with the loosening of the bolt, the nut rotates, the inner circular ring in the first component and the outer circular ring in the second component rotate relatively, an included angle between the rectangular patches changes, the internal capacitance of the antenna changes, and the second-order resonant frequency of the antenna drifts;
according to the specification, mechanical parameters and thread pitch of the bolt, the angle of rotation of the nut when the bolt changes from a preset pretightening force state to a completely-lost pretightening force state is determined through tests, and a module is arranged for inputting to a system. When the bolt of the object to be tested is loosened, the relative included angle of the rectangular patch is changed, the second-order resonant frequency of the antenna is changed, and the influence relation is determined through tests.
Radio Frequency Identification (RFID) technology provides a new idea for monitoring bolt looseness, and corner measurement without an external wired power supply can be realized.
The RFID reader 7 comprises a wireless transceiving module, a modulation and demodulation module, a control module and a digital processing module; the wireless transceiver module and the modem module are all known technologies in the field, and are not innovative points of the present application. Through the wireless transceiving module and the modulation and demodulation module, the RFID reader 7 can detect the resonance frequency drift of the RFID tag 1, the resonance frequency drift is demodulated by the modulation and demodulation module and then is provided for the control module and the digital processing module, and the digital processing module calculates the relative rotation angle of the two components, namely the rotation angle of the nut according to the corresponding relation in the setting module, so as to judge the state of the bolt 2.
The control module is used for controlling the RFID reader 7 of the system to transmit modulated electromagnetic wave signals to the RFID tag 1 at different frequencies, and when the power of the signal received by the RFID tag 1 reaches a threshold value, the RFID chip 55 in the RFID tag 1 can be activated. The minimum transmitting power of the reader required for activating the label is related to the frequency of a signal transmitted by the reader, and when the RFID reader 7 transmits a signal at the second-order resonant frequency of the helical antenna in the RFID label 1, the minimum transmitting power required for activating the label is minimum.
The digital processing module can determine the resonant frequency of the antenna in the RFID tag 1 by finding the transmission frequency at which the minimum transmission power reaches the minimum value. When the relative included angle of the rectangular patch inside the antenna changes, the capacitance of the antenna changes, and the second-order resonant frequency drifts, the second-order resonant frequency drift amount can be determined by the method, so that the generated rotation angle value and the nut rotation angle are obtained, and the bolt state is judged according to the nut rotation angle.
The system also prestores codes and position information of the tags carried by the chips in the electronic tag sensors, the RFID reader 7 is used for transmitting modulated electromagnetic wave signals to the tags, the codes of the tags can be identified, when the RFID reader 7 is arranged in a scanning range of a plurality of RFID tags 1, the reader can mark the bolt state of each measuring point according to the codes of the tags, and quickly position loosened bolts.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A bolt detection device based on a double-ring patch antenna with a label is used for detecting whether a bolt (2) connecting two connecting components (3) is loosened by rotation, it is characterized by comprising an RFID label (1) which is arranged on the connecting component (3) and sleeved on the outer edge of the bolt (2), the RFID tag (1) comprises a first component (4), a second component (5) and a third component (6), the second component (5) is fixedly arranged on the connecting component (3), the first component (4) and the third component (6) are mutually and fixedly connected, and is matched with the second component (5), an antenna capacitor of the RFID label (1) is formed between the first component (4) and the second component (5), the third component (6) is provided with a bolt fixing part for sleeving the outer edge of the bolt (2), the first assembly (4) and the third assembly (6) can rotate along with the bolt (2);
when the bolt (2) is loosened in a rotating mode, the first assembly (4) and the third assembly (6) are driven to rotate together, an included angle between the first assembly (4) and the second assembly (5) is changed, antenna capacitance of the RFID tag (1) is changed, second-order resonant frequency of an antenna is changed, and detection of the bolt loosening in the rotating mode is achieved;
the second assembly (5) comprises a dielectric plate arranged on the connecting member (3), and an outer ring (51), a second rectangular patch (52), an RFID chip (54) and a feed microstrip line (53) which are respectively arranged on the dielectric plate, wherein a circular opening for mounting the first assembly (4) is formed in the dielectric plate, the second rectangular patch (52) is arranged at the inner edge of the outer ring (51), and the RFID chip (54) is connected with the outer ring (51) through the feed microstrip line (53);
first subassembly (4) include annular panel and set up interior ring (41) and first rectangle paster (42) on annular panel respectively, first rectangle paster (42) set up in the outer fringe department of interior ring (41), the diameter of interior ring (41) be less than the diameter of outer ring (51), annular panel cover on the dielectric-slab, and interior ring (41) cover locate in outer ring (51), interior ring (41) and outer ring (51) constitute the antenna capacitance of RFID label (1), the inner edge and third subassembly (6) fixed connection of annular panel.
2. The device of claim 1, wherein the outer ring (51) defines an opening (55).
3. The bolt detection device based on the tag-equipped dual-ring patch antenna is characterized in that the inner ring (41) and the outer ring (51) are matched with each other to be in an initial position when the bolt (2) is not loosened in rotation;
when bolt (2) take place rotatory not hard up, drive the annular panel of third subassembly (6) and first subassembly (4) and rotate jointly, interior ring (41) rotate for the position of outer ring (51), the contained angle of first rectangle paster (42) and second rectangle paster (52) change, the antenna capacitance of RFID label (1) change, lead to antenna second order resonant frequency to change, realize the rotatory not hard up detection of bolt.
4. The device for detecting the bolt based on the tag-equipped dual-ring patch antenna according to claim 1, wherein the third component (6) comprises a circular panel with a hexagonal through hole formed in the middle, the hexagonal through hole is matched with the outer edge of the nut of the bolt (2) to stabilize the outer edge of the nut of the nested bolt (2), and the outer edge of the circular panel is fixedly connected with the inner edge of the ring-shaped panel.
5. The screw bolt detection device based on the labeled double-ring patch antenna according to claim 4, wherein the inner ring (41), the outer ring (51), the first rectangular patch (42) and the second rectangular patch (52) are all made of brass, and the dielectric plate material is RT 5880.
6. A bolt detection system based on a tagged double circular patch antenna, characterized by comprising an RFID tag (1) and an RFID reader (7) of the bolt detection device according to any one of claims 1-4, communicatively connected to each other, said RFID reader (7) being adapted to read information from the RFID tag (1) and to perform data processing;
when the system works, the RFID reader (7) emits electromagnetic wave signals to activate the RFID chip (54), detects the second-order resonant frequency drift amount of the antenna, obtains the rotating angle of the bolt (2) according to the influence relation between the second-order resonant frequency drift amount of the antenna and the relative included angle change amount of the first rectangular patch and the second rectangular patch obtained through tests, and judges whether the rotation looseness occurs.
7. The screw detection system based on the tagged double-ring patch antenna as claimed in claim 6, wherein the RFID reader (7) detects the second-order resonant frequency of the antenna in the RFID tag (1) by finding the transmitting frequency at which the minimum transmitting power for activating the RFID chip (54) reaches a minimum value.
8. The bolt detection system based on the double-ring patch antenna with the label is characterized in that the RFID reader (7) emits modulated electromagnetic wave signals to the RFID tags (1) to identify codes corresponding to the RFID tags (1), and when a plurality of RFID tags (1) are arranged in the scanning range of the RFID reader (7), the RFID reader (7) marks the bolt state of each measuring point according to the codes of the tags to locate the bolt which is loosened in rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110426852.7A CN113218299B (en) | 2021-04-20 | 2021-04-20 | Bolt detection device and system based on double-ring patch antenna with label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110426852.7A CN113218299B (en) | 2021-04-20 | 2021-04-20 | Bolt detection device and system based on double-ring patch antenna with label |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113218299A CN113218299A (en) | 2021-08-06 |
| CN113218299B true CN113218299B (en) | 2022-09-20 |
Family
ID=77088068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110426852.7A Active CN113218299B (en) | 2021-04-20 | 2021-04-20 | Bolt detection device and system based on double-ring patch antenna with label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113218299B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178336B (en) * | 2011-12-20 | 2016-08-17 | 刘智佳 | Ultrathin double-frequency microstrip patch antenna configuration RFID label antenna |
| CN103455776A (en) * | 2012-06-01 | 2013-12-18 | 北京物资学院 | Mechanical displacement measurement RFID system and mechanical displacement measurement method thereof |
| CN102760222A (en) * | 2012-06-01 | 2012-10-31 | 北京物资学院 | RFID (Radio Frequency Identification Device) system for measuring mechanical displacement and method for measuring mechanical displacement |
| TWI569923B (en) * | 2016-07-05 | 2017-02-11 | 中國氣動工業股份有限公司 | Monitoring system and method for bolting operation |
| CN107643045B (en) * | 2017-08-23 | 2019-11-29 | 南京理工大学 | Large-scale array bolt looseness based on active RFID monitors system and method |
| CN107643046B (en) * | 2017-08-31 | 2020-06-05 | 南京理工大学 | System and method for monitoring rotation angle of large bolt based on passive RFID |
| JP2019078611A (en) * | 2017-10-24 | 2019-05-23 | 川崎重工業株式会社 | Fastening member looseness detection tag |
| CN109034340A (en) * | 2018-08-06 | 2018-12-18 | 天津云拓网络科技有限公司 | A kind of electronic tag that monitoring bolt loosens |
| CN109272092B (en) * | 2018-08-31 | 2022-02-01 | 重庆西南集成电路设计有限责任公司 | UHF RFID tag capable of detecting screw looseness |
-
2021
- 2021-04-20 CN CN202110426852.7A patent/CN113218299B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113218299A (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5297439A (en) | Magnetoelastic stress sensor | |
| KR102419334B1 (en) | Pipe fitting including sensor | |
| US10451519B2 (en) | Non-contact strain measurement system and method for using the same | |
| EP2190212A2 (en) | System for measuring deflection of rotating shaft in wireless manner | |
| US10260971B2 (en) | Remotely powered and remotely interrogated torque measurement devices, systems, and methods | |
| KR20100025465A (en) | Fastening apparatus and system for detecting axial force thereof | |
| ES2875505T3 (en) | Sensor assembly, device and method for determining vibrations of a measurement object, and measurement object that has at least one sensor assembly of this type | |
| WO2017203220A1 (en) | Method and apparatus for measuring resonant frequency of an article and for monitoring tensile load in a bolt | |
| CN113218299B (en) | Bolt detection device and system based on double-ring patch antenna with label | |
| CN105637325A (en) | Sensor assembly for detecting angles of rotation on a rotating component in a vehicle | |
| CN110749272A (en) | Passive wireless crack sensor based on short-circuit patch antenna and sensing system | |
| CN103266887A (en) | Instrument for measuring deep resistivity through wireless short-distance transmission signals and application method thereof | |
| US6877370B2 (en) | Tire air pressure monitor | |
| CN113125132B (en) | Bolt looseness sensing device, system and method based on double-layer substrate patch antenna | |
| EP3270130B1 (en) | Passive sensor tag system | |
| CN112816190B (en) | Bolt monitoring system based on double-opening resonant ring patch antenna detection | |
| CN112697183B (en) | Bolt looseness sensor and looseness monitoring system based on double-arc patch antenna | |
| KR101187254B1 (en) | Contactless power measurement device of shaft | |
| CN214748777U (en) | Bolt looseness sensor based on overlapped fan annular patch antenna | |
| CN112697336B (en) | Bolt looseness sensor and monitoring system based on overlapped fan annular patch antenna | |
| CN104179771A (en) | Intelligent fastening piece | |
| US20210273427A1 (en) | Device for detecting contact with an electrical conductor, method for identifying contact with an electrical conductor, insulation stripping machine comprising a device of this kind | |
| US20070279204A1 (en) | Method and system for tire inflation monitoring | |
| US20230258520A1 (en) | Screw nut and mounting device | |
| CN113252080B (en) | Structure deformation temperature synchronous monitoring sensor and system based on combined patch antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |