CN110006381A - High-speed rail bolt looseness detection system and method based on RFID and displacement sensor - Google Patents

High-speed rail bolt looseness detection system and method based on RFID and displacement sensor Download PDF

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Publication number
CN110006381A
CN110006381A CN201910229125.4A CN201910229125A CN110006381A CN 110006381 A CN110006381 A CN 110006381A CN 201910229125 A CN201910229125 A CN 201910229125A CN 110006381 A CN110006381 A CN 110006381A
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CN
China
Prior art keywords
bolt
rfid
displacement
displacement sensor
mounting plate
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Granted
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CN201910229125.4A
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Chinese (zh)
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CN110006381B (en
Inventor
吴玉石
彭波
翟大庆
秦福林
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Sichuan Guoruan Science And Technology Development Co Ltd
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Sichuan Guoruan Science And Technology Development Co Ltd
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Priority to CN201910229125.4A priority Critical patent/CN110006381B/en
Publication of CN110006381A publication Critical patent/CN110006381A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00Methods 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
    • G06K17/0022Methods 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
    • G06K17/0029Methods 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention discloses a kind of high-speed rail bolt looseness detection system and method based on RFID and displacement sensor, it is related to hidden danger monitoring technical field, system includes the RFID label tag being arranged on bolt, the RFID reader at high iron car bottom is set, displacement sensor, microprocessor, communication module, server and shift gear, RFID reader, displacement sensor and communication module are connect with microprocessor respectively, microprocessor is connect by communication module with server communication, shift gear is arranged on bolt, for the loosening displacement of bolt to be converted to straight-line displacement, displacement sensor is arranged on shift gear, for obtaining straight-line displacement data;The present invention converts straight-line displacement for the swing offset of bolt looseness by shift gear, displacement sensor is enabled more accurately to obtain displacement data, effectively reduce rate of false alarm, simultaneously, the stability of data transmission has been effectively ensured in the dual network structure of zigbee and 4G, reduces data loss rate.

Description

High-speed rail bolt looseness detection system and method based on RFID and displacement sensor
Technical field
The present invention relates to hidden danger monitoring technical fields, more particularly, to the high iron bolt pine based on RFID and displacement sensor Dynamic detection system and method.
Background technique
With the fast development of Chinese Railway, Chinese high-speed rail technology is increasingly mature, and high speed railway construction is not only at home such as The development of the fire such as bitter edible plant, is also actively being promoted to foreign countries.It is convenient that the rapid development of high-speed railway brings for the trip of the people, while Bigger challenge is brought for the maintenance of motor-car.
Motor-car needs to keep high speed for a long time when running, and bolt and nut is as important fastener, for a long time constantly by outer The effect of power can generate vibration, this just inevitably makes bolt and nut fastener generate loosening, and motor-car is caused to run Occurs various problem in journey, there are great security risks.
Piezoelectricity sensing element prison is installed between nut and connected component currently, crossing for the loosening detection multi-pass of bolt Survey bolt in use screw rod Tensity size change to judge whether bolt loosens, however, changing original spiral shell in this way The intensity and structure of stud structure, installing will lead to the intensity of bolt arrangement after gasket instead and changes, and there are certain safety Hidden danger.And it is then at high cost to realize that bolt looseness is detected with image recognition by artificial or computer vision, discrimination is low.
Summary of the invention
To solve the above-mentioned problems, it is examined the invention proposes a kind of based on the high-speed rail bolt looseness of RFID and displacement sensor Examining system and method.
To achieve the goals above, the present invention adopts the following technical scheme:
In a first aspect, being detected the embodiment of the invention provides a kind of based on the high-speed rail bolt looseness of RFID and displacement sensor System, including the RFID label tag being arranged on bolt, RFID reader, displacement sensor, micro process that high iron car bottom is arranged in Device, communication module, server and shift gear, the RFID reader, displacement sensor and communication module respectively with institute Microprocessor connection is stated, microprocessor is connect by communication module with the server communication, the shift gear setting On bolt, for the loosening displacement of bolt to be converted to straight-line displacement, institute's displacement sensors are arranged in shift gear On, for obtaining the straight-line displacement data after shift gear is converted.
Further, the communication module includes zigbee node module and 4G communication module, the zigbee node mould Block and 4G communication module are connect with the microprocessor respectively.
Further, the system also includes local host and zigbee coordinator, the microprocessor passes through described Zigbee node module is connect with the zigbee coordinator, and the zigbee coordinator is connect with the local host, described Local host setting is communicated to connect in driver's cabin, local host and the server via Ethernet.
Further, the shift gear includes nut mounting plate and bolt mounting plate, the nut mounting plate and Bolt mounting plate is fixed by the connecting rod connection, is provided with driving gear, driven gear and driver on the nut mounting plate Structure, the driving gear and the driven gear are meshed, and driven gear and nut mounting plate are rotatablely connected, the transmission mechanism It is meshed with driven gear, nut bore corresponding with nut is provided on driving gear;Be provided on the bolt mounting plate with The corresponding bolt hole of bolt, the bolt hole are opposite with the upper and lower position of the nut bore.
Further, the size of the nut bore is consistent with nut, and the size of the bolt hole is not less than bolt size.
Further, the transmission mechanism includes sliding rail, rack gear and the first limited block, the rack gear side and the sliding rail It is slidably connected, the rack gear other side is meshed with the driven gear, and first limited block is separately positioned on the two of the sliding rail End, sliding rail are fixedly connected with the nut mounting plate, and institute's displacement sensors are detachably arranged on rack gear.
Further, the second limited block is additionally provided on the nut mounting plate, second limited block is and the master The arc-shaped of moving gear concentric, the second limited block are provided with out in the driving gear with the place of being meshed of the driven gear Mouthful, driving gear is slidably connected with the second limited block.
Further, the shift gear further includes cover board, and being provided on the cover board can accommodate what nut passed through Cover plate through hole, the cover plate through hole is opposite with the upper and lower position of the nut bore, and cover board and the nut mounting plate are dismountable Connection.
Further, the bolt mounting plate further includes fixed hole and fixed link, and the fixed hole is arranged described On bolt hole inner wall and run through bolt mounting plate, the fixed link is threadedly coupled with fixed hole.
Second aspect is detected the embodiment of the invention provides a kind of based on the high-speed rail bolt looseness of RFID and displacement sensor Method, comprising:
The number of corresponding institute's displacement sensors is written in the RFID label tag;
The swing offset that bolt looseness generates is converted into straight-line displacement by the shift gear;
Straight-line displacement data are obtained by institute's displacement sensors and the straight-line displacement data are sent to micro- place Manage device;
The straight-line displacement data received compared with preset threshold, are judged straight-line displacement data by the microprocessor Whether it is more than preset threshold, if being more than, opens the RFID reader and read the RFID label tag, judges whether there is and institute The corresponding RFID label tag of displacement sensors, and if it exists, it includes described for then being sent by the communication module to the server First warning information of straight-line displacement data and corresponding FRID label information prompts bolt looseness;If it does not exist, then described micro- Processor sends the second warning information that RFID label tag falls off to the server.
Compared with prior art, the beneficial effects of the present invention are: by shift gear by the rotation of bolt looseness Displacement is converted into straight-line displacement, enables displacement sensor more accurately to obtain displacement data, effectively reduces rate of false alarm, together When, the stability of data transmission has been effectively ensured by the dual network structure of zigbee and 4G network by the present invention, reduces data Loss Rate.
Detailed description of the invention
Fig. 1 is the high-speed rail bolt looseness detection system based on RFID and displacement sensor that present pre-ferred embodiments provide Structural schematic diagram;
Fig. 2 is the nut mounting plate top view that present pre-ferred embodiments provide;
Fig. 3 is the nut mounting plate side view that present pre-ferred embodiments provide;
Fig. 4 is the nut mounting plate top view for the cover plate that present pre-ferred embodiments provide;
Fig. 5 is the nut mounting plate side view for the cover plate that present pre-ferred embodiments provide;
Fig. 6 is another nut mounting plate top view that present pre-ferred embodiments provide;
Fig. 7 is the bolt mounting plate top view that present pre-ferred embodiments provide;
Fig. 8 is the high-speed rail bolt looseness detection method based on RFID and displacement sensor that present pre-ferred embodiments provide Flow chart.
Description of symbols: 1- bolt mounting plate, 2- nut mounting plate, 3- connecting rod, 4- cover board, 101- driving gear, 1011- nut bore, 102- driven gear, 1031- sliding rail, 1032- rack gear, the first limited block of 1033-, the second limited block of 104-, 201- bolt hole, 202- fixed link, 401- cover plate through hole, 5- card slot.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Term " first ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relatively heavy The property wanted.
As shown in Figure 1, being examined the embodiment of the invention provides a kind of based on the high-speed rail bolt looseness of RFID and displacement sensor Examining system, including be arranged on bolt RFID label tag, RFID reader, displacement sensor, the Wei Chu at high iron car bottom are set Device, zigbee node module, 4G communication module, local host, zigbee coordinator, server and shift gear are managed, RFID reader, displacement sensor, zigbee node module and 4G communication module are connect with microprocessor respectively, and microprocessor is logical It crosses 4G communication module and server wireless communication connects, meanwhile, microprocessor is coordinated by zigbee node module and zigbee Device connection, zigbee coordinator are connect with local host, and zigbee coordinator and local host are arranged in driver's cabin, local host It is communicated to connect with server via Ethernet.Zigbee coordinator and the zigbee node module of each compartment bottom form The data of zigbee network, each node acquisition can be sent to local host storage through zigbee coordinator by zigbee network And it is inquired for staff.If being provided with a RFID label tag and shift gear on the bolt stem of each compartment bottom, Shift gear is used to the loosening displacement of bolt being converted to straight-line displacement, and displacement sensor is arranged in shift gear On, for obtaining the straight-line displacement data after shift gear is converted, numbered in each RFID label tag including RFID and right The displacement sensor number answered, the RFID label tag signal that the displacement signal and RFID reader of each displacement sensor acquisition obtain It is sent to microprocessor, a zigbee network is formed by node of the microprocessor of each compartment, when 4G network can not connect When connecing, microprocessor can send data to local host storage by zigbee network, and be uploaded to clothes by local host Business device, the risk of loss of data caused by the setting of dual network is effectively reduced because of network problem.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, shift gear includes nut mounting plate 2 and bolt installation Plate 1, nut mounting plate 2 and bolt mounting plate 1 are fixedly connected by connecting rod 3, are provided with driving gear on nut mounting plate 2 101, driven gear 102 and transmission mechanism, driving gear 101 and driven gear 102 are meshed, and driven gear 102 and nut are pacified Loading board 2 is rotatablely connected, and transmission mechanism is meshed with driven gear 102, and nut corresponding with nut is provided on driving gear 101 Hole 1011;Bolt hole 201 corresponding with bolt, the upper bottom of bolt hole 201 and nut bore 1011 are provided on bolt mounting plate 1 It sets opposite, wherein 101 diameter of driving gear is less than driven gear 102, and driving gear 101 is generated bolt looseness Swing offset is easier to pass to transmission mechanism by driven gear 102.
Further, the size of nut bore 1011 is consistent with nut, and nut is preferably bonded with nut bore 1011, Convenient for can effectively drive driving gear 101 to rotate when nut loosening, bolt mounting plate 1 further includes fixed hole and fixed link 202, fixed hole is arranged on 201 inner wall of bolt hole and runs through bolt mounting plate 1, and fixed link 202 and fixed hole screw thread connect It connecing, the size of bolt hole 201 is not less than the Screw rod size of bolt, so that bolt hole 201 can easily be sleeved on bolt screw rod, Fixed link 202 is enabled effectively to fasten by the screw rod of fixed hole and bolt simultaneously, so that bolt and 1 phase of bolt mounting plate To fixation, it can effectively improve transmission mechanism and obtain the accuracy for loosening displacement.
Further, transmission mechanism includes sliding rail 1031, rack gear 1032 and the first limited block 1033,1032 side of rack gear with Sliding rail 1031 is slidably connected, and 1032 other side of rack gear is meshed with driven gear 102, and the first limited block 1033 is separately positioned on cunning The both ends of rail 1031, sliding rail 1031 are fixedly connected with nut mounting plate 2, and a card slot 5, displacement sensing are fixedly installed on rack gear 1032 Device is removably arranged in card slot 5.
Further, it is additionally provided with the second limited block 104 on nut mounting plate 2, the second limited block 104 is and driving gear The arc-shaped of 101 concentrics, the second limited block 104 are provided with out in driving gear 101 with the place of being meshed of driven gear 102 Mouthful, driving gear 101 is slidably connected with the second limited block 104, by the second limited block 104, enables driving gear 101 more preferable Engaged with driven gear 102, the effective transmitting for carrying out power.
Further, shift gear further includes cover board 4, and the cover board that nut passes through can be accommodated by, which being provided on cover board 4, leads to Hole 401, cover plate through hole 401 is opposite with the upper and lower position of nut bore 1011, and cover board 4 is removably connect with nut mounting plate 2, lid Plate 4 is provided with opening close to one end that rack gear 1032 is engaged with driven gear 102.
For high-speed rail during long run, there may be loosenings for bolt, and the usual intensity of high iron bolt is higher, and when loosening produces Raw kinetic energy is bigger compared with plain bolt, when bolt looseness, since fixed link 202 consolidates the screw rod of bolt and bolt mounting plate 2 Fixed, shift gear is fastened on bolt screw rod, is fallen without loosening, nut generates displacement under the effect of external force thus Driving gear 101 is driven to rotate, driving gear 101 drives driven gear 102 to rotate, and driven gear 102 is done with carry-over bar 1032 Linear motion converts the straight-line displacement more easily captured for the swing offset that nut rotation generates, enables displacement sensor Easier acquisition displacement signal after microprocessor gets displacement signal, is sent to server by 4G network or passes through Zigbee network is sent to local host, and staff can be made to find the risk of bolt looseness in time, without artificial periodically inspection It looks into, improves overhaul efficiency.
As shown in figure 8, being examined the embodiment of the invention provides a kind of based on the high-speed rail bolt looseness of RFID and displacement sensor Survey method, comprising:
The number of corresponding displacement sensor is written in RFID label tag;
The swing offset that bolt looseness generates is converted into straight-line displacement by shift gear;
Straight-line displacement data are obtained by displacement sensor and straight-line displacement data are sent to microprocessor;
Microprocessor by the straight-line displacement data received compared with preset threshold, judge straight-line displacement data whether be more than Preset threshold opens RFID reader and reads RFID label tag, microprocessor is judged whether there is to be passed including the displacement if being more than The corresponding RFID label tag of sensor number, and if it exists, then being sent by 4G communication module to server includes straight-line displacement data And the first warning information of corresponding FRID label information, prompt bolt looseness;If it does not exist, then microprocessor is sent out to server The second warning information that RFID label tag falls off or bolt is lost is sent, meanwhile, by the way that RFID label tag is arranged to each bolt, and pass through RFID reader can efficiently read each FRID label information, effectively raise the inspection efficiency to bolt, without artificial Each bolt is checked;
If the first warning information or the second warning information send failure after default sending times, microprocessor passes through Zigbee node module and zigbee coordinator communicate to connect, and are alerted the first warning information or second by zigbee coordinator Information is sent to local host and is stored, and the first warning information or the second warning information are sent to clothes by local host Business device, ensure that data will not lose, meanwhile, server end administrative staff can easily be monitored the case where each train, Local side staff can obtain the problem of current train is with the presence or absence of bolt looseness in time.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (10)

1. the high-speed rail bolt looseness detection system based on RFID and displacement sensor, which is characterized in that including being arranged on bolt RFID label tag, RFID reader, displacement sensor, microprocessor, communication module, server and the position at high iron car bottom are set Transmission device is moved, the RFID reader, displacement sensor and communication module are connect with the microprocessor respectively, microprocessor It is connect by communication module with the server communication, the shift gear is arranged on bolt, for by the pine of bolt Dynamic displacement is converted to straight-line displacement, and institute's displacement sensors are arranged on shift gear, for obtaining through displacement transmission dress Straight-line displacement data after setting conversion.
2. the high-speed rail bolt looseness detection system according to claim 1 based on RFID and displacement sensor, feature exist In, the communication module include zigbee node module and 4G communication module, the zigbee node module and 4G communication module It is connect respectively with the microprocessor.
3. the high-speed rail bolt looseness detection system according to claim 2 based on RFID and displacement sensor, feature exist In, the system also includes local host and zigbee coordinator, the microprocessor by the zigbee node module with The zigbee coordinator connection, the zigbee coordinator are connect with the local host, and the local host setting is being driven Room is sailed, local host and the server via Ethernet communicate to connect.
4. the high-speed rail bolt looseness detection system according to claim 1 based on RFID and displacement sensor, feature exist In the shift gear includes nut mounting plate and bolt mounting plate, and the nut mounting plate and bolt mounting plate pass through Connecting rod is fixedly connected, and driving gear, driven gear and transmission mechanism, the driving gear are provided on the nut mounting plate It is meshed with the driven gear, driven gear and nut mounting plate are rotatablely connected, and the transmission mechanism is mutually nibbled with driven gear It closes, is provided with nut bore corresponding with nut on driving gear;Bolt corresponding with bolt is provided on the bolt mounting plate Hole, the bolt hole are opposite with the upper and lower position of the nut bore.
5. the high-speed rail bolt looseness detection system according to claim 4 based on RFID and displacement sensor, feature exist In the size of the nut bore is consistent with nut, and the size of the bolt hole is not less than bolt size.
6. the high-speed rail bolt looseness detection system according to claim 4 based on RFID and displacement sensor, feature exist In the transmission mechanism includes sliding rail, rack gear and the first limited block, and the rack gear side is slidably connected with the sliding rail, rack gear The other side is meshed with the driven gear, and first limited block is separately positioned on the both ends of the sliding rail, sliding rail with it is described Nut mounting plate is fixedly connected, and institute's displacement sensors are detachably arranged on rack gear.
7. the high-speed rail bolt looseness detection system according to claim 4 based on RFID and displacement sensor, feature exist In being additionally provided with the second limited block on the nut mounting plate, second limited block is and the driving gear concentric Arc-shaped, the second limited block are provided with opening at the driving gear and the place of being meshed of the driven gear, driving gear with Second limited block is slidably connected.
8. the high-speed rail bolt looseness detection system according to claim 4 based on RFID and displacement sensor, feature exist In the shift gear further includes cover board, and the cover plate through hole that nut passes through can be accommodated by being provided on the cover board, the lid Plate through-hole is opposite with the upper and lower position of the nut bore, and cover board is removably connect with the nut mounting plate.
9. the high-speed rail bolt looseness detection system according to claim 4 based on RFID and displacement sensor, feature exist In, the bolt mounting plate further include fixed hole and fixed link, the fixed hole be arranged on the bolt hole inner wall and Through bolt mounting plate, the fixed link is threadedly coupled with fixed hole.
10. the high-speed rail bolt looseness detection method based on RFID and displacement sensor is applied to as claim 1~9 is any one The high-speed rail bolt looseness detection system based on RFID and displacement sensor described in characterized by comprising
The number of corresponding institute's displacement sensors is written in the RFID label tag;
The swing offset that bolt looseness generates is converted into straight-line displacement by the shift gear;
Straight-line displacement data are obtained by institute's displacement sensors and the straight-line displacement data are sent to the microprocessor;
Whether the straight-line displacement data received compared with preset threshold, are judged straight-line displacement data by the microprocessor More than preset threshold, if being more than, opens the RFID reader and read the RFID label tag, judge whether there is and institute's rheme The corresponding RFID label tag of displacement sensor, and if it exists, then being sent by the communication module to the server includes the straight line First warning information of displacement data and corresponding FRID label information prompts bolt looseness;If it does not exist, then the micro process Device sends the second warning information that RFID label tag falls off to the server.
CN201910229125.4A 2019-03-25 2019-03-25 High-speed rail bolt loosening detection system and method based on RFID and displacement sensor Active CN110006381B (en)

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CN110827516A (en) * 2019-10-29 2020-02-21 广州安拾科技有限公司 Nut loosening alarm system and method based on Internet of things cloud and application thereof
CN111307191A (en) * 2020-02-21 2020-06-19 河海大学 Sound barrier bolt looseness rapid detection method
CN112097706A (en) * 2020-08-24 2020-12-18 中国大唐集团科学技术研究院有限公司西北电力试验研究院 Wind power tower cylinder flange bolt looseness real-time monitoring system and early warning method
CN114441154A (en) * 2022-01-11 2022-05-06 昆山市交通工程发展中心 Bolt tightness monitoring device
CN115402373A (en) * 2022-09-27 2022-11-29 北京索云科技股份有限公司 Device and system for detecting looseness of fastener

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CN111307191A (en) * 2020-02-21 2020-06-19 河海大学 Sound barrier bolt looseness rapid detection method
CN112097706A (en) * 2020-08-24 2020-12-18 中国大唐集团科学技术研究院有限公司西北电力试验研究院 Wind power tower cylinder flange bolt looseness real-time monitoring system and early warning method
CN114441154A (en) * 2022-01-11 2022-05-06 昆山市交通工程发展中心 Bolt tightness monitoring device
CN115402373A (en) * 2022-09-27 2022-11-29 北京索云科技股份有限公司 Device and system for detecting looseness of fastener

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