CN105160364A - RFID-based member relative displacement detection method - Google Patents
RFID-based member relative displacement detection method Download PDFInfo
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- CN105160364A CN105160364A CN201510457246.6A CN201510457246A CN105160364A CN 105160364 A CN105160364 A CN 105160364A CN 201510457246 A CN201510457246 A CN 201510457246A CN 105160364 A CN105160364 A CN 105160364A
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Abstract
The invention discloses an RFID-based member relative displacement detection method. The steps include: 1) installing a fragile RFID electronic label in advance between members to be detected, and the fragile RFID electronic label being connected and fixed to the members to be detected; 2) when detection of relatively displacement of the members to be detected is needed, adopting an RFID electronic label reader to read the fragile RFID electronic label installed between the members to be detected, if the fragile RFID electronic label is read successfully, judging that no relative displacement occurs between the members to be detected, and otherwise judging that relative displacement occurs between the members to be detected. The RFID-based member relative displacement detection method provided by the invention has the advantages of fast identification speed, wide identification range, easy control, simplicity and practicability, small equipment size and flexible shape, convenient updating of data format, penetrability and barrier-free detection, good safety and wide range of application.
Description
Technical field
The present invention relates to mechanical component relative displacement detection technique, be specifically related to a kind of component relative displacement detection method based on RFID.
Background technology
It is the common detection demand of one in daily use that relative displacement between two adjacent or connected components detects.Such as, whether there is displacement judge two components between two components in locomotive field whether occur abnormal mobile by detecting, also can judge one of them component whether relatively another component be separated or lose; In addition also can whether be subjected to displacement judge whether the whether impaired or condition in damaged of this building element expands by detecting two articles in the building such as house, bridge in building safety assessment.The method that this kind of detection is commonly used at present be manually by the measuring appliances such as ruler measure two member spacings from, there is labour intensity large, multiple position cannot be measured simultaneously, cannot the defect such as Real-Time Monitoring.
As everyone knows, the common component of one that the various securing members comprising bolt are interconnected and fixed as equipment room, has been widely used in the mechanical fields such as railway, vehicle, bridge, engineering equipment.But, due to impacts such as vibration, corrosion, impacts in use, very easily cause loosening, be out of shape, rupture or come off of securing member, thus cause securing member to lose efficacy, cause equipment failure even accidents caused.So the inspection of securing member tightening state is the big event in plant equipment repair and maintenance always.Such as, railway locomotive industry is good in order to ensure the securing member tightening state of locomotive running gear equipment, guarantee traffic safety, all needs to carry out securing member inspection before each outbound of locomotive.The detection detection methods that gets loose at present for securing members such as bolts mainly contains hand inspection method and image detection 2 kinds.Wherein, mainly through visual inspection is locking, hand inspection method marks whether that dislocation is to judge whether securing member loosens, the detection method that gets loose of the securing member the most often adopted is at present that artificial cognition gets loose mark detection method, its detecting step is: first, manually on the fastening securing member that completes and fastener, paints picture continuous print straight line as locking mark.When needing to carry out fastening inspection in the future, manually misplaced by locking the marking whether on visual inspection securing member and fastener, if the locking mark on securing member and fastener still illustrates that securing member and fastener are shifted point-blank, if locking mark on securing member and fastener not point-blank explanation securing member there is migration.Artificial cognition gets loose, and to there is labour intensity large for mark detection method, and locking mark is easily by defects such as covering such as dust greasy dirts; Image detection identifies whether securing member loosens by image recognition technology, but its technical difficulty is large, and cost is high, easily affects by illumination, vibration, spot etc., and wrong report, rate of failing to report are high.
REID (RadioFrequencyIdentification, RFID) also known as radio frequency identification, it is a kind of wireless communication technology, related data can be read and write by radio signals identification specific objective, without the need to setting up machinery or optical contact between recognition system and specific objective, wireless signal is the electromagnetic field by furnishing radio frequency, and data are sent from the RFID be attached to article, with automatic Identification and these article of tracking.Rfid system comprises RFID and RFID reader, RFID reader carries out radio communication by antenna and RFID, the reading to tag recognition code and internal storage data or write operation can be realized, RFID reader identifiable design high-speed moving object also can identify multiple RFID simultaneously, swift and convenient to operate, and can identify within general several meters of storage information comprising of RFID, the elect magnetic field that some RFID sends from recognizer when identifying just can obtain energy, do not need battery, in addition also there is RFID itself to have power supply, and initiatively can send radiowave (electromagnetic field of furnishing radio frequency).With bar code unlike, radio-frequency (RF) tag does not need to be within recognizer sight line, can embed within tracked object yet.
Frangible RFID also makes anti-transfer RFID, rapid wear RFID, anti-rotation change broken RFID etc., the RFID circuit that concrete structure is encapsulating material and is located in encapsulating material, encapsulating material has small deformation, frangible characteristic, is torn for preventing RFID subsidiary on article; RFID circuit is made up of antenna, coupling element, chip, can be read the overall unique number of frangible RFID wherein by RFID reader, the overall unique number of frangible RFID generally comprises the unique identity information of this frangible RFID.
Summary of the invention
The technical problem to be solved in the present invention is: for the problems referred to above of prior art, provide that a kind of recognition speed is fast, identification range be wide, be easy to manipulate and simple and practical, equipment volume is small and exquisite and flexible shapes, data layout upgrade convenient, penetrability can be realized and detect without barrier, security is good, the component relative displacement detection method based on RFID of applied range.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Based on a component relative displacement detection method of RFID, step comprises:
1) between detected component, frangible RFID is installed in advance, described frangible RFID is connected and fixed with detected component respectively;
2) when carrying out relative displacement between needs are to detected component and detecting, RFID reader is adopted to read the frangible RFID of installing between detected component, if read successfully, then judge, between the component that is detected, relative displacement does not occur, otherwise judge relative displacement to occur between detected component.
Preferably, described step 2) detailed step comprise:
2.1) in advance the installation position of installing frangible RFID between detected component be numbered and set up electronic labeling information table, in the list item of described electronic labeling information table, storing the overall unique number that frangible RFID is installed in the installation site numbering of the installation position of frangible RFID and this installation position; When carrying out relative displacement between needs are to detected component and detecting, the serviceable condition of the frangible RFID of Initialize installation is designated "false", adopt the frangible RFID that RFID reader is installed between detected component, and redirect performs next step;
2.2) judge whether RFID reader reads the overall unique number of frangible RFID, when reading the overall unique number of frangible RFID, redirect performs step 2.3); If exceed the overall unique number that the default time does not read frangible RFID yet, then redirect performs step 2.5);
2.3) for the frangible RFID read overall unique number described in electronic labeling information table, if find matched record, redirect perform step 2.4); Otherwise redirect performs step 2.2);
2.4) from the matched record found, read installation site numbering, judge that whether the actual numbering of the installation position of the frangible RFID of installing between the installation site numbering of reading with detected component is consistent, if consistent, the serviceable condition arranging frangible RFID is designated "True" and redirect execution step 2.5); Inconsistent else if, then redirect performs step 2.2);
2.5) the serviceable condition mark of frangible RFID is identified, if the serviceable condition of frangible RFID is designated "True", then judge to read the frangible RFID success of installing between detected component, between detected component, relative displacement does not occur; If the serviceable condition of frangible RFID is designated "false", then judges to read the frangible RFID failure of installing between detected component, between detected component, relative displacement occurs.
Preferably, when frangible RFID being installed between detected component in described step 1), specifically to refer to the two ends of frangible RFID respectively with detected component by adhere to or bind or adaptor is connected or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID and detected component; Or specifically refer to that fixed and arranged is on a detected component in advance by one end of frangible RFID, the other end and another detected component are by adhere to or bind or adaptor connects or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID and detected component.
Preferably, described frangible RFID is the frangible RFID of anti-metal type.
The component relative displacement detection method that the present invention is based on RFID has following advantage:
1, recognition speed is fast.The present invention adopts RFID reader to read the frangible RFID of installing between detected component, the information whether reading frangible RFID is utilized to judge whether relative position occurs, detection speed is exceedingly fast, in most cases less than 100 milliseconds, and RFID reader simultaneously identification can read several frangible RFID, thus disposablely can complete multiple relative displacement and detect.
2, identification range is wide.The present invention adopts RFID reader to read the frangible RFID of installing between detected component, can identify within general several meters, and by strengthening antenna and signal transmission power, the position of tens meters can be reached farthest by detecting distance.
3, be easy to manipulation and simple and practical.The present invention adopts RFID reader to read the frangible RFID of installing between detected component, utilizes the information whether reading frangible RFID to judge whether relative position occurs, and is easy to manipulation and simple and practical.
4, the small and exquisite and flexible shapes of equipment volume.The relative displacement that the present invention is realized by frangible RFID between the component that is detected detects, frangible RFID does not limit by size and shape in reading, can be adapted to different occasion by using multiple encapsulating material and packing forms.
5, contamination resistance and good endurance.The relative displacement that the present invention is realized by frangible RFID between the component that is detected detects, frangible RFID has very strong repellence to materials such as water, oil and chemicalss, and frangible RFID store data in can from stained in chip.
6, data layout upgrades conveniently.The relative displacement that the present invention is realized by frangible RFID between the component that is detected detects, and the information stored in frangible RFID can repeatedly be revised, and facilitates the renewal of information.
7, penetrability can be realized and detect without barrier.The relative displacement that the present invention is realized by frangible RFID between the component that is detected detects, when capped, frangible RFID can penetrate nonmetal or nontransparent materials such as paper, timber and plastics, and can carry out penetrability communication.And frangible RFID of the present invention is the frangible RFID of anti-metal type further, general frangible RFID can be solved and can not be attached to the applicable problem in metal surface, under can being freely operated in various rugged surroundings.
8, security is good.The relative displacement that the present invention is realized by frangible RFID between the component that is detected detects, and what carry due to frangible RFID is electronic type information, and its data content can, via cryptoguard, make its content not easily be forged and alter.
9, applied range.The present invention both may be used for all kinds of adjacent relative displacement connected between component and had detected, also the relative displacement that may be used between all kinds of adjacent members detects, the relative displacement that may be used between all kinds of securing member and securing member fixing body (fastener) detects, can identify whether opposing fastener inserts fixing body (fastener) sends loosening securing member quickly and easily, the tightening state being particularly useful for a large amount of securing members of the mechanical fields such as railway, vehicle, bridge, engineering equipment detects, and the efficiency of mass detection is very high.
Accompanying drawing explanation
Fig. 1 is the basic procedure schematic diagram of embodiment of the present invention method.
Fig. 2 is the mounting structure schematic diagram of frangible RFID in the embodiment of the present invention.
Structural representation when Fig. 3 is frangible RFID fracture in the embodiment of the present invention.
Marginal data: 1, bolt; 2, mounting base; 3, nut; 4, frangible RFID; 5, RFID reader.
Embodiment
Hereafter using the mounting base 2 of the nut 3 of bolt 1, bolt 1 as detected component, relative displacement between the mounting base 2 realizing the nut 3 of bolt 1, bolt 1 is detected as example, is described in further detail the component relative displacement detection method that the present invention is based on RFID.
As shown in Figure 1, the present embodiment comprises based on the step of the component relative displacement detection method of RFID:
1) between detected component, frangible RFID is installed in advance, frangible RFID is connected and fixed with detected component respectively; See Fig. 2, bolt 1 is arranged on mounting base 2, and the upside of bolt 1 is provided with the nut 3 be threaded, in the present embodiment frangible RFID 4 one end and mounting base 2 is connected and fixed, the other end and nut 3 are connected and fixed.
2) when carrying out relative displacement between needs are to detected component and detecting, RFID reader 5 is adopted to read the frangible RFID 4 of installing between detected component, if read successfully, then judge, between the component that is detected, relative displacement does not occur, otherwise judge relative displacement to occur between detected component.
The object that the present embodiment adopts the component relative displacement of RFID to detect is that the tightening state of the nut 3 realizing bolt 1 detects, see Fig. 2, its concrete testing process is as follows: when carrying out fastening inspection, make RFID reader 5 be within the scope of certain distance with the nut 3 being provided with frangible RFID 4, this distance is determined by the performance of frangible RFID 4 and RFID reader 5.After frangible RFID 4 enters the magnetic field of RFID reader 5, by the radiofrequency signal that the computer equipment reception RFID reader 5 be connected with RFID reader 5 sends, the energy obtained by means of induction current sends out the overall unique number (passive label or passive label) of the frangible RFID 4 in the RFID circuit chip being stored in frangible RFID 4, or by frangible RFID 4(active label or active tag) initiatively send the signal of a certain frequency to RFID reader 5.Final RFID reader 5 is after the overall unique number reading frangible RFID 4 is also decoded, and the information management system delivered on connected computing machine carries out relevant data process.If RFID reader 5 successfully can receive the coded message that this frangible RFID 4 sends, prove that this frangible RFID 4 is in good condition, the tightening state of the nut 3 of this frangible RFID 4 correspondence is good.See Fig. 3, if frangible RFID 4 ruptures, RFID circuit then in frangible RFID 4 is damaged, thus can read failure when adopting RFID reader 5 to read the frangible RFID of installing between detected component.
In the present embodiment, step 2) detailed step comprise:
2.1) in advance the installation position of installing frangible RFID 4 between detected component be numbered and set up electronic labeling information table, in the list item of described electronic labeling information table, storing the overall unique number that frangible RFID 4 is installed in the installation site numbering of the installation position of frangible RFID 4 and this installation position; When carrying out relative displacement between needs are to detected component and detecting, the serviceable condition of the frangible RFID 4 of Initialize installation is designated "false", adopt the frangible RFID 4 that RFID reader is installed between detected component, and redirect performs next step;
2.2) judge whether RFID reader reads the overall unique number of frangible RFID 4, when reading the overall unique number of frangible RFID 4, redirect performs step 2.3); If exceed the overall unique number that the default time does not read frangible RFID 4 yet, then redirect performs step 2.5);
2.3) for the frangible RFID 4 read overall unique number described in electronic labeling information table, if find matched record, redirect perform step 2.4); Otherwise redirect performs step 2.2);
2.4) from the matched record found, read installation site numbering, judge that whether the actual numbering of the installation position of the frangible RFID 4 of installing between the installation site numbering of reading with detected component is consistent, if consistent, the serviceable condition arranging frangible RFID 4 is designated "True" and redirect execution step 2.5); Inconsistent else if, then redirect performs step 2.2);
2.5) the serviceable condition mark of frangible RFID 4 is identified, if the serviceable condition of frangible RFID 4 is designated "True", then judge to read frangible RFID 4 success of installing between detected component, between detected component, relative displacement does not occur; If the serviceable condition of frangible RFID 4 is designated "false", then judges to read frangible RFID 4 failure of installing between detected component, between detected component, relative displacement occurs.
It should be noted that, when frangible RFID 4 being installed between detected component (nut 3 of bolt 1, the mounting base 2 of bolt 1) in step 1), can as required by frangible RFID 4 respectively with detected component (nut 3 of bolt 1, the mounting base 2 of bolt 1) by adhere to or bind or adaptor is connected or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID 4 and the component (nut 3 of bolt 1, the mounting base 2 of bolt 1) be detected.In addition, also can refer to that fixed and arranged is on a detected component (nut 3 of such as bolt 1) in advance by one end of frangible RFID as required or specifically, the other end and another detected component (mounting base 2 of such as bolt 1) are by adhere to or bind or adaptor connects or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID and detected component.Aforesaid adaptor can select buckle, cutting ferrule, folder spring etc. as required, the adaptors such as buckle, cutting ferrule, folder spring are generally preferably mounted on detected component, then one end of frangible RFID is fixed by buckle, cutting ferrule, folder spring, can realize and switching between frangible RFID and detected component.
In the present embodiment, frangible RFID 4 is the frangible RFID 4 of anti-metal type, the frangible RFID of anti-metal type 4 effectively can solve the problem that general RFID can not be attached to metal surface use, thus makes the scope of application of frangible RFID 4 wider.Certainly, frangible RFID 4 can select active type RFID or passive RFID as required.
It should be noted that, the present embodiment is only detected as with the relative displacement between the mounting base 2 realizing the nut 3 of bolt 1, bolt 1 exemplary illustration that example carries out the component relative displacement detection method that the present invention is based on RFID.Certainly, except nut 3, bolt 1, screw, pin and other relative displacement played between the component of fastening effect and mounting base 2 can also be applied to detect, and the component relative displacement detection method that the present invention is based on RFID further can also be applicable to other structure types component between relative displacement detect, be such as adjacent between two components or other annexations etc., its principle is identical with the present embodiment, therefore does not repeat them here.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1., based on a component relative displacement detection method of RFID, it is characterized in that step comprises:
1) between detected component, frangible RFID is installed in advance, described frangible RFID is connected and fixed with detected component respectively;
2) when carrying out relative displacement between needs are to detected component and detecting, RFID reader is adopted to read the frangible RFID of installing between detected component, if read successfully, then judge, between the component that is detected, relative displacement does not occur, otherwise judge relative displacement to occur between detected component.
2. the component relative displacement detection method based on RFID according to claim 1, is characterized in that, described step 2) detailed step comprise:
2.1) in advance the installation position of installing frangible RFID between detected component be numbered and set up electronic labeling information table, in the list item of described electronic labeling information table, storing the overall unique number that frangible RFID is installed in the installation site numbering of the installation position of frangible RFID and this installation position; When carrying out relative displacement between needs are to detected component and detecting, the serviceable condition of the frangible RFID of Initialize installation is designated "false", adopt the frangible RFID that RFID reader is installed between detected component, and redirect performs next step;
2.2) judge whether RFID reader reads the overall unique number of frangible RFID, when reading the overall unique number of frangible RFID, redirect performs step 2.3); If exceed the overall unique number that the default time does not read frangible RFID yet, then redirect performs step 2.5);
2.3) for the frangible RFID read overall unique number described in electronic labeling information table, if find matched record, redirect perform step 2.4); Otherwise redirect performs step 2.2);
2.4) from the matched record found, read installation site numbering, judge that whether the actual numbering of the installation position of the frangible RFID of installing between the installation site numbering of reading with detected component is consistent, if consistent, the serviceable condition arranging frangible RFID is designated "True" and redirect execution step 2.5); Inconsistent else if, then redirect performs step 2.2);
2.5) the serviceable condition mark of frangible RFID is identified, if the serviceable condition of frangible RFID is designated "True", then judge to read the frangible RFID success of installing between detected component, between detected component, relative displacement does not occur; If the serviceable condition of frangible RFID is designated "false", then judges to read the frangible RFID failure of installing between detected component, between detected component, relative displacement occurs.
3. the component relative displacement detection method based on RFID according to claim 2, it is characterized in that, when frangible RFID being installed between detected component in described step 1), specifically to refer to the two ends of frangible RFID respectively with detected component by adhere to or bind or adaptor is connected or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID and detected component; Or specifically refer to that fixed and arranged is on a detected component in advance by one end of frangible RFID, the other end and another detected component are by adhere to or bind or adaptor connects or magnetic absorption connects mode are installed and realized being connected and fixed between frangible RFID and detected component.
4. the component relative displacement detection method based on RFID according to claim 3, is characterized in that, described frangible RFID is the frangible RFID of anti-metal type.
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| CN201510457246.6A CN105160364A (en) | 2015-07-30 | 2015-07-30 | RFID-based member relative displacement detection method |
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| CN106778949A (en) * | 2016-11-24 | 2017-05-31 | 同济大学 | One kind promotes bridge automatic detection to know method for distinguishing and bridge machinery identification label |
| CN107845326A (en) * | 2017-12-19 | 2018-03-27 | 中铁第四勘察设计院集团有限公司 | Rail in high speed railway expansion and cotraction regulator displacement identification Sign Board and measuring method |
| CN108181659A (en) * | 2018-02-11 | 2018-06-19 | 上海振华重工(集团)股份有限公司 | A kind of loosening detection device and its detection method for fastener |
| CN109272092A (en) * | 2018-08-31 | 2019-01-25 | 重庆西南集成电路设计有限责任公司 | A kind of UHF RFID tag that can detect screw loosening |
| CN109766983A (en) * | 2019-01-02 | 2019-05-17 | 上海坤锐电子科技有限公司 | The anti-transfer method of radio frequency chip, electronic tag, detection module, chip, article shape and displacement detecting method |
| CN110006381A (en) * | 2019-03-25 | 2019-07-12 | 四川国软科技发展有限责任公司 | High-speed rail bolt looseness detection system and method based on RFID and displacement sensor |
| CN111104810A (en) * | 2019-12-16 | 2020-05-05 | 太原理工大学 | Scraper structure fracture monitoring method based on radio frequency identification |
| CN111164399A (en) * | 2017-10-24 | 2020-05-15 | 川崎重工业株式会社 | Fastening member looseness detection mark |
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| CN111104810A (en) * | 2019-12-16 | 2020-05-05 | 太原理工大学 | Scraper structure fracture monitoring method based on radio frequency identification |
| CN111104810B (en) * | 2019-12-16 | 2023-09-08 | 太原理工大学 | Scraper structure fracture monitoring method of scraper based on radio frequency identification |
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