CN102183323B - Fixed element detection system - Google Patents
Fixed element detection system Download PDFInfo
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- CN102183323B CN102183323B CN201110049528A CN201110049528A CN102183323B CN 102183323 B CN102183323 B CN 102183323B CN 201110049528 A CN201110049528 A CN 201110049528A CN 201110049528 A CN201110049528 A CN 201110049528A CN 102183323 B CN102183323 B CN 102183323B
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- retaining element
- signal
- circuit
- detection system
- radio frequency
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Abstract
The invention discloses a fixed element detection system. A sensing material is placed in a fixed element body, power is supplied by a radio-frequency circuit, electric signals from the sensing material are converted into circuit readable signals by using a signal processing unit, and the circuit readable signals are transmitted to an external detection device through radio frequency to detect the state of the fixed element. Accurate and quick great screening operation can be performed on the fixed elements in the mode of the system, and the system is particularly suitable for occasions of high safety concerns such as partial screws on an airplane body.
Description
(the application is to be on Dec 20th, 2007 applying date, and application number is 200710301890.X, and denomination of invention is divided an application for " retaining element and detection system thereof " application)
Technical field
The present invention relates to a kind of technology that detects the retaining element stationary state, relate in particular to the retaining element detection system of the sensing material of a kind of power of having and electricity conversion.
Background technology
Retaining element is the basis of industrial products, no matter be from toy even to large-scale commercial plant, for example: means of transports such as aircraft or navigation utensil, all closely bound up in retaining element.Especially on flying instrument, retaining element institute role is quite important especially, as long as the loosening of a retaining element arranged, may cause femto-ampere immediately dangerous to aircraft, and then have influence on the safety of carry-on passenger's life and property.Aviation general administration of Japan-US state alliance (FAA) rarely issued urgent airworthiness directive once again Augusts 28 in 2007, required the above passenger plane of Boeing seven pseudo-ginseng-six O O type in ten days, to stitch special inspection of the fixing only bolt nut of bar before the completion wing totally.The council reveals according to femto-ampere, and the U.S. carries out having found to have at least 23 Boeing, seven pseudo-ginseng series aircrafts after spy's inspection, finds that also the fixing bolt screw that ends of the preceding seam of wing bar gets loose, and wherein has one also to cause fuel tank damaged.
FAA is after incident is destroyed on airport, China Airlines Limited seven pseudo-ginseng passenger plane Naha by fire; All aircrafts more than all seven pseudo-ginseng-six O O series are issued urgent airworthiness directive (Emergency Airworthiness Directive; EAD), require in two fortnights, to accomplish before the wing that the seam bar is fixing to end the special inspection of bolt nut, also find to have at least the 23 airplane wing also to occur before the fixing bolt nut that ends of seam bar pitch; And have at least one also to cause fuel tank damaged, the passenger plane situation of destroying by fire with China Airlines Limited is almost consistent.
And in the prior art; The technology that detects is greater than focusing on modes such as air pressure, moment, vibration detection; For example the U.S. discloses application case US.Pub.No.20070172330 or U.S. Pat .Pat.No.4; 636,121 grades have disclosed the state that a kind of mode of utilizing air pressure or hydraulic pressure detects retaining element.U.S. Pat .pat.No.5 and for example, 410,206,5,476,014 or 6,546,815 have disclosed the stress that a kind of mode of utilizing moment to detect detects this retaining element.In addition, U.S. Pat .Pat.No.20070238992 has then disclosed the stress that a kind of mode of utilizing vibration is come the sensing retaining element.
Generally speaking, the screw rod on the important zero element of all aircrafts all can have insurance, and strand is tight in the other direction with the screw rod rotation in order to use the steel fuse in this insurance, is aircraft maintainers's compulsory course, guarantees purpose of safety to reach.In addition, this screw rod need use torque wrench to tighten, and also has on some screw head to aim at japanning so that whether visual examination gets loose; But these all are on the online repairing spare of flight, can visual zero element be prerequisite; If aircaft configuration is interior or the inner portion that can not inspect in general inspections at different levels,, otherwise do not reach fully only if apart big inspection or the special inspection of taking; If true genus design is bad, then passenger's life safety will suffer major crisis.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of retaining element detection system; Its utilization can receive by having sensing material and come the electric signal that retaining element sent of sensing stress; And the stress of analyzing and judging retaining element, to carry out for retaining element accurately and a large amount of fast screening actions.
For realizing above-mentioned purpose; The present invention provides a kind of retaining element detection system, comprises an at least one retaining element and a correcting mode, wherein; This retaining element is fixed on the facility; And this retaining element has: a body, and its inside has a sensing material, and the suffered power of this this body of sensing material sensing is to produce an electric signal; One signal processing unit, it has a signaling conversion circuit and a wireless radio frequency circuit, and this signaling conversion circuit is arranged at a side of this body, electrically connects with this sensing material, and this signaling conversion circuit becomes a switching signal with this electrical signal conversion; This wireless radio frequency circuit and this signaling conversion circuit electrically connect, and this switching signal is spread out of; One transactor, itself and this wireless radio frequency circuit communicates, and gives this wireless radio frequency circuit and receives the signal that this wireless radio frequency circuit is sent to transmit signal; An and signal analysis device; It is connected with this transactor, handling the signal that this transactor is received, and carries out analyzing and processing to judge the state of this retaining element; This signal analysis device has more a record cell and an analytic unit; This record cell stores the signal that this transactor received, and this analytic unit is analyzed the stored information of this record cell, and carries out the state of each retaining element of statistical study; This correcting mode is the judgement of being carried out when utilizing this retaining element electric signal that field measurement goes out, if find to have the electric signal attenuation trend of retaining element to have when unusual, judges that promptly this retaining element has different shape.
Comprehensively above-mentioned, a kind of retaining element detection system provided by the invention can be carried out accurately and a large amount of fast screening actions retaining element, especially is suitable for the occasion of high safety misgivings.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Figure 1A is the three-dimensional diagrammatic cross-section of retaining element first embodiment of the present invention;
Figure 1B is the block schematic diagram of signal processing unit;
Fig. 2 is the retaining element second embodiment synoptic diagram of the present invention;
Fig. 3 is retaining element the 3rd an embodiment synoptic diagram of the present invention;
Fig. 4 is retaining element the 4th an embodiment synoptic diagram of the present invention;
Fig. 5 is retaining element the 5th an embodiment synoptic diagram of the present invention;
Fig. 6 is that retaining element of the present invention detects system embodiment synoptic diagram;
Fig. 7 is that retaining element of the present invention detects system running block schematic diagram;
Fig. 8 closes curve synoptic diagram because of the stressed electric signal size that produces with the time for sensing material;
Fig. 9 for unusual its sensing material of retaining element because of the stressed electric signal decay pattern of anomaly curve synoptic diagram that produces.
Wherein, Reference numeral:
The 2-retaining element
The 20-body
The 200-hollow structure
The 201-thread
The 202-through hole
The 21-sensing material
The 22-signal processing unit
The 220-signaling conversion circuit
The 221-wireless radio frequency circuit
The 2210-transmission circuit
2211-energy receiving circuit
Hexagonal shrinkage pool in the 23-
The 24-outer wall
The 240-pothole
The 241-groove
The 25-accommodation space
The 3-retaining element
The 30-body
The 300-through hole
The 301-groove
The 31-sensing material
The 32-signal processing unit
The 4-retaining element
The 40-body
The 400-hollow structure
The 41-sensing material
The 42-signal processing unit
5-retaining element detection system
The 51-transactor
The 52-signal analysis device
The 520-record cell
The 521-analytic unit
The 90-aircraft
91～94-curve
Embodiment
For making your juror further cognition and understanding arranged to characteristic of the present invention, purpose and function; The hereinafter spy describes the relevant thin portion structure of device of the present invention and the theory reason of design; So that the juror can understand characteristics of the present invention, specify statement as follows:
See also shown in Figure 1A and Figure 1B, wherein Figure 1A is the three-dimensional diagrammatic cross-section of retaining element first embodiment of the present invention; Figure 1B is the block schematic diagram of signal processing unit.In the present embodiment, this retaining element 2 is the fixed screw of hexagonal in, and it has a body 20.In this body 20, offer an accommodation space 25 so that a ccontaining sensing material 21 to be provided.In the present embodiment, the zone that constituted by a hollow structure 200 of this accommodation space 25.In addition, provide the accommodation space of ccontaining sensing material also can constitute, as for which kind of form then being demand according to using is decided with by structures such as through hole, groove or potholes.In order to strengthen clinging power, can be coated with viscose glue so that this sensing material 21 is adhered in this hollow structure 200 in the position, boundary of this sensing material 21 and this hollow structure 200.In the present embodiment, this hollow structure 200 is the partial interior with thread 201 that is opened in this retaining element body 20.This sensing material is a power-electric transition material, and it may be selected to be an electric quick material (electro-sensitive material).The quick material of this electricity can be a piezoelectric (piezoelectric material) or electric compression material (Electrostrictive Material).This sensing material can produce the corresponding voltage or the electric signal of electric current through the variation of power.
Be provided with a signal processing unit 22 in the interior hexagonal shrinkage pool 23 on this body 20, it also has a signaling conversion circuit 220 and a wireless radio frequency circuit 221.This signaling conversion circuit 220 electrically connects with this sensing material 21, and this signaling conversion circuit 220 can become a switching signal with this electrical signal conversion.This switching signal can be simulating signal or digital signal according to the conversion characteristic of signaling conversion circuit 220.Generally speaking, this signaling conversion circuit can be a simulation/analog converter or analog/digital converter.This wireless radio frequency circuit 221, itself and this signaling conversion circuit 220 electrically connects, and this wireless radio frequency circuit 221 can spread out of and receive outside inquiry with this switching signal and answer radiofrequency signal.
In the present embodiment, this wireless radio frequency circuit 221 also has a transmission circuit 2210 and an energy receiving circuit 2211.This transmission circuit 2210 electrically connects with this signaling conversion circuit 220, and this transmission circuit 2210 can spread out of the identifier that this switching signal and the pairing retaining element of this switching signal are had.So-called identifier is for the independently code name that each retaining element had, in order to distinguishing with other retaining element.This energy receiving circuit 2211, itself and this signaling conversion circuit 220 and this transmission circuit 2210 electrically connect, and this energy receiving circuit 2211 can receive a radiofrequency signal and convert electric energy to and use for this signaling conversion circuit 220 and transmission circuit 2210.In the present embodiment, this wireless radio frequency circuit 221 may be selected to be a passive type wireless radio frequency identification mark (radio frequency identification, RFID).
See also shown in Figure 2ly, this figure is the retaining element second embodiment synoptic diagram of the present invention.In the present embodiment; This retaining element 2 is a hexagon socket head cap screw; The difference of itself and Figure 1A is that the interior hexagonal shrinkage pool 23 of this retaining element body 20 and the part junction with thread 201 offer a through hole 202; Have an accommodation space 25 in it, adhesion has sensing material 21 in this accommodation space 25.Likewise, has a signal processing unit 22 in the interior hexagonal shrinkage pool in body 20.As shown in Figure 3, this figure is retaining element the 3rd an embodiment diagrammatic cross-section of the present invention.In the present embodiment, on the outer wall 24 of interior hexagonal shrinkage pool 23, offer a pothole 240, have accommodation space in it so that ccontaining sensing material 21 to be provided.On this outer wall 24, also have a signal processing unit 22, itself and this sensing material 21 electrically connects and is embedded in the groove 241 on this outer wall, receiving the electric signal that sensing material 21 is produced, and then converts thereof into a switching signal and sends.
In another embodiment, as shown in Figure 4, this figure is retaining element the 4th an embodiment diagrammatic cross-section of the present invention.In the present embodiment, this retaining element 3 is a nut, on its body 30, offers a through hole 300, has accommodation space in it so that ccontaining sensing material 31 to be provided, and the described sensing material of the characteristic of this sensing material such as Figure 1A is not given unnecessary details at this.On a side of this retaining element body 30, offer a groove 301 so that ccontaining one signal processing unit 32 that electrically connects mutually with this sensing material 31 to be provided.The described signal processing unit 22 of the characteristic of this signal processing unit 32 such as Figure 1B is not given unnecessary details at this.In addition, as shown in Figure 5, this figure is that retaining element the 5th of the present invention is implemented the illustration diagrammatic cross-section.In the present embodiment, this retaining element 4 is a bolt.Have hollow structure 400 on the body 40 of this retaining element 4, the same adhesion of the accommodation space in it has sensing material 41.End at this sensing material 41 has a signal processing unit 42.As for the operating principle of this sensing material 41 and signal processing unit 42 as previously mentioned, do not give unnecessary details at this.Other retaining element, for example: element spirit of the present invention also capable of using such as a Philip's head screw or a word screw are accomplished.
See also shown in Figure 6ly, this figure is a retaining element detection system embodiment synoptic diagram of the present invention.In the present embodiment, this detection system 5 includes at least one retaining element 2, a transactor 51 and a signal analysis device 52.Each retaining element 2 is arranged on the facility, and the wide range of these facility needs mechanism, device or the system of retaining element all can use retaining element of the present invention as connecting fixing member such as.In the present embodiment, these facility are just explained with flight facility 90.Have a plurality of retaining elements 2 on these flight facility 90, fixing and be connected with the parts on the facility that will fly.2 of this retaining elements can be selected aforesaid any retaining element.
This transactor 51, it can communicate in this retaining element 2, gives this retaining element 2 and receives the signal that is sent by this retaining element 2 to transmit signal.In the present embodiment, this transactor 51 can be a wireless identification label reader or other wireless receiver.This signal analysis device 52, it is connected with this transactor 51, handling the signal that this transactor 51 is received, and carries out analyzing and processing to judge the state of this retaining element 2.This signal analysis device 52 can be selected to make wired or wireless mode with this transactor 51 and be connected.In the present embodiment, this signal analysis device 52 may be selected to be computing machine with calculation process ability or workstation etc., but not as limit.As shown in Figure 7, among this another embodiment, this signal analysis device 52 also has a record cell 520 and an analytic unit 521.This record cell 520, it can store the signal that this transactor 51 is received.This analytic unit 521, it can analyze the stored information of this record cell 520, and carries out the state of each retaining element 2 of statistical study.
Next retaining element detection system function mode of the present invention is described.As shown in Figure 7, this figure is a retaining element detection system running block schematic diagram of the present invention.When retaining element 2 is locked on aircraft 90 casings; Because retaining element 2 receives wrench or turnscrew when it is tightened in the location; Because this sensing material 21 belongs to piezoelectric or electric compression material; Therefore when the retaining element body is stressed, tension force be can produce at this sensing material 21, and the corresponding voltage or the electric signal of electric current produced.When the user utilizes transactor 51 to send to read signal; Energy receiving circuit 2211 in this wireless radio frequency circuit 221 can receive askes the signal of answering; At this moment, this energy receiving circuit 2211 can be answered conversion of signals with this inquiry and becomes telecommunications to handle the electric energy required with transmission with suppling signal.Receive at this signal processing unit 22 and to ask when answering signal; This signaling conversion circuit 220 can receive the electric signal that this sensing material 21 is produced; And convert thereof into simulation or digital switching signal, give this transactor 51 through these transmission circuit 2210 passbacks then.
This transactor 51 has been received after the signal; Can signal be returned to this signal analysis device 52 through wired or wireless mode; To Storage Media, its inner analytic unit 521 can be analyzed the state to judge that this retaining element is locked admittedly to this signal then with signal record in record cell 520 meeting elder generations in this signal analysis device 52.When being in locking state as if retaining element 2, sensing material 21 receives certain force of strain and produces electric signal through changing and sending a switching signal, when transactor 51 comes close to or in contact with, can detect this switching signal, and then is judged by this resolver 52.If; Get loose or during breaking state, the suffered tension force of this sensing material disappears when screw is in, thus the electric signal that produces disappears or commentaries on classics a little less than; When transactor 51 comes close to or in contact with; Can detect corresponding switching signal, can judge that this retaining element 2 is not in normal locking state, or locking state be loosening to some extent.So can carry out a large amount of accurately and fast screening actions, especially be suitable for the occasion of high safety misgivings, for example the segment screw on the airframe.
In addition, the electric signal that under same stress, is produced owing to sensing material possibly change in time and gradually, and is as shown in Figure 8.Therefore the user can utilize different correcting modes to proofread and correct the solid lock state of resolving this retaining element in order to resolution unit.Wherein a kind of correcting mode; Can be after one batch retaining element production; Carry out the making of calibration curve, the locking force that specific size is provided is on this retaining element, and measurement is under different time; The electric signal that sensing material the produced size of retaining element is to draw out the calibration curve that belongs to this retaining element.Utilize this kind mode, can be when at the scene retaining element being measured with reference to this calibration curve, correctly to judge the locking force size of this retaining element.
A kind of in addition mode then is the judgement of being carried out when utilizing the retaining element electric signal that field measurement goes out.As shown in Figure 9; Though the change that the electric signal that sensing material produced can be in time and decaying; But if lock under the normal situation; Therefore the attenuation trend of its each retaining element should be identical, if find to have the attenuation trend of a lock member to have when unusual, can judge that this lock member has different shape should give to note or changes.Each retaining element all has an independently identification code, so signal analysis device can draw out different curves according to different identification codes when receiving signal, and the curve 91,92,93 and 94 among Fig. 9 is represented the different fixed element respectively.In Fig. 9,, can infer that therefore this retaining element maybe be unusual because change trend and other curve difference of curve 91 are very big.Earlier figures 8 is the qualitative profile that explanation is done of going up with the curve of Fig. 9, and actual curve still must be decided with the material of selecting.
Comprehensively above-mentioned, a kind of retaining element provided by the invention and detection system thereof can be carried out accurately and a large amount of fast screening actions for retaining element, especially are suitable for the occasion of high safety misgivings.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (8)
1. a retaining element detection system is characterized in that, comprises an at least one retaining element and a correcting mode, wherein,
This retaining element is fixed on the facility, and this retaining element has:
One body, its inside has a sensing material, and the suffered power of this this body of sensing material sensing is to produce an electric signal;
One signal processing unit, it has a signaling conversion circuit and a wireless radio frequency circuit, and this signaling conversion circuit is arranged at a side of this body, electrically connects with this sensing material, and this signaling conversion circuit becomes a switching signal with this electrical signal conversion; This wireless radio frequency circuit and this signaling conversion circuit electrically connect, and this switching signal is spread out of;
One transactor, itself and this wireless radio frequency circuit communicates, and gives this wireless radio frequency circuit and receives the signal that this wireless radio frequency circuit is sent to transmit signal; And
One signal analysis device; It is connected with this transactor, handling the signal that this transactor is received, and carries out analyzing and processing to judge the state of this retaining element; This signal analysis device has more a record cell and an analytic unit; This record cell stores the signal that this transactor received, and this analytic unit is analyzed the stored information of this record cell, and carries out the state of each retaining element of statistical study;
This correcting mode is the judgement of being carried out when utilizing this retaining element electric signal that field measurement goes out, if find to have the electric signal attenuation trend of retaining element to have when unusual, judges that promptly this retaining element has different shape.
2. retaining element detection system according to claim 1 is characterized in that, this body be nut, bolt and screw one of them.
3. retaining element detection system according to claim 1 is characterized in that, this switching signal be digital signal and simulating signal one of them.
4. retaining element detection system according to claim 1 is characterized in that, this wireless radio frequency circuit also has:
One transmission circuit, itself and this signaling conversion circuit electrically connects, and this transmission circuit spreads out of with this switching signal and to the identifier that retaining element had that should switching signal; And
One energy receiving circuit, itself and this signaling conversion circuit and this transmission circuit electrically connect, and this energy receiving circuit receives a radiofrequency signal and converts electric energy to and use for this signaling conversion circuit and transmission circuit.
5. retaining element detection system according to claim 1 is characterized in that, this wireless radio frequency circuit is a passive type wireless radio frequency identification mark.
6. retaining element detection system according to claim 1 is characterized in that, this sensing material is an electric quick material, the quick material of this electricity be a piezoelectric and an electric compression material one of them.
7. retaining element detection system according to claim 1 is characterized in that, offers an accommodation space in this body with ccontaining this sensing material.
8. retaining element detection system according to claim 7 is characterized in that this sensing material is fixed in this accommodation space with viscose glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110049528A CN102183323B (en) | 2007-12-20 | 2007-12-20 | Fixed element detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110049528A CN102183323B (en) | 2007-12-20 | 2007-12-20 | Fixed element detection system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710301890XA Division CN101465043B (en) | 2007-12-20 | 2007-12-20 | Screw, bolt and detection system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102183323A CN102183323A (en) | 2011-09-14 |
| CN102183323B true CN102183323B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110049528A Expired - Fee Related CN102183323B (en) | 2007-12-20 | 2007-12-20 | Fixed element detection system |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5461923A (en) * | 1994-05-16 | 1995-10-31 | Raymond Engineering Inc. | Acoustic transducer, transducerized fastener and method of manufacture |
| CN1197014A (en) * | 1997-04-21 | 1998-10-28 | 黄添财 | Tyre pressure warning device |
| CN1440887A (en) * | 2002-02-28 | 2003-09-10 | 敦扬科技股份有限公司 | Wheel rim with sensor |
| CN1553161A (en) * | 2003-06-06 | 2004-12-08 | 张 力 | Pump rod torque force sensing device |
| US6925395B2 (en) * | 2002-10-15 | 2005-08-02 | Canberra Aquila, Inc. | Apparatus and method for measuring the torque applied to bolts |
-
2007
- 2007-12-20 CN CN201110049528A patent/CN102183323B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5461923A (en) * | 1994-05-16 | 1995-10-31 | Raymond Engineering Inc. | Acoustic transducer, transducerized fastener and method of manufacture |
| CN1197014A (en) * | 1997-04-21 | 1998-10-28 | 黄添财 | Tyre pressure warning device |
| CN1440887A (en) * | 2002-02-28 | 2003-09-10 | 敦扬科技股份有限公司 | Wheel rim with sensor |
| US6925395B2 (en) * | 2002-10-15 | 2005-08-02 | Canberra Aquila, Inc. | Apparatus and method for measuring the torque applied to bolts |
| CN1553161A (en) * | 2003-06-06 | 2004-12-08 | 张 力 | Pump rod torque force sensing device |
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| Publication number | Publication date |
|---|---|
| CN102183323A (en) | 2011-09-14 |
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