CN205941933U - Screw loose monitoring devices and system - Google Patents
Screw loose monitoring devices and system Download PDFInfo
- Publication number
- CN205941933U CN205941933U CN201620918365.7U CN201620918365U CN205941933U CN 205941933 U CN205941933 U CN 205941933U CN 201620918365 U CN201620918365 U CN 201620918365U CN 205941933 U CN205941933 U CN 205941933U
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- sensor
- loosened screw
- bolt
- monitoring device
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 15
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000000806 elastomer Substances 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a screw loose monitoring devices and system, the device be including electric connection's LC sensor, signal processing chip, control chip and wireless communication module in proper order, the LC sensor is a coil, the LC sensor is used for measuring it and being surveyed the inductance signal between the metal, it is position sigual that signal processing chip is used for received inductance signal conversion, control chip converts received position sigual apart from data into, wireless communication module is used for with received apart from data transmission to backstage computer. Compare with screw loose monitoring devices on the existing market, the utility model discloses a device has simple structure, simple to operate, with low costs, advantages such as the monitoring precision is high, application range guangZhou to the device does not need making regular check on of maintainer, and the real can accomplish on -line measuring, has practiced thrift the manpower greatly, and improved the work efficiency of monitoring bolt, has improved the work efficiency of equipment.
Description
Technical field
The utility model belongs to machanical fastener detection technique field, more particularly, to a kind of loosened screw monitoring device and be
System.
Background technology
Bolt connection is widely used in the middle of each engineering field as a kind of general connected mode.Because it is subject to
The impact such as outside shock and vibration and high temperature, is likely to occur slip, separates or even come off, and then affect structure at bolt connection
Safety and serviceability, even result in structural failure and cause catastrophic consequence.It is operated in severe ring especially for those
Bolt under border, its tightness and fatigue damage are often difficult to directly judge, or its elastic situation is often ignored.In order to
Avoid because bolt looseness lost efficacy and cause damage sequence, to carrying out on-line condition monitoring at the bolt of some important feature, permissible
Play incidence and the prevention major accident effect of reduction accident.
In prior art, bolt looseness on-line monitoring comparative maturity is had：Piezoelectric Impedance Technology, image procossing, Empirical Mode
Formula decomposition technique.Bolt looseness study on monitoring wherein based on Piezoelectric Impedance Technology uses more.Its operation principle, applies to bolt
Plus different pretightning forces, the impedance variations of the piezoelectric that measurement bolt connection structure is installed, using Piezoelectric Admittance real part
Root-mean-square-deviation is identified to the tightness of bolt.But its using piezoelectric transducer material have more crisp, be not suitable with curved surface,
It is more accurate in the range of bolt looseness 250mm that its measurement uses, and the damage outside this scope is judged inaccurate.
Utility model content
In order to overcome the deficiencies in the prior art, one of the purpose of this utility model is to provide a kind of loosened screw monitoring dress
Put, it can solve the technical problem of loosened screw monitoring.
The two of the purpose of this utility model are to provide a kind of loosened screw monitoring system, and it can solve loosened screw monitoring
Technical problem.
One of the purpose of this utility model employs the following technical solutions realization：
A kind of loosened screw monitoring device, including the LC sensor being electrically connected with successively, signal processing chip, control chip
And wireless communication module, described LC sensor is a coil；
Described LC sensor is used for measuring itself inductance signal and tested metal between, and inductance signal is transmitted to signal
Process chip；
Described signal processing chip is used for for the inductance signal receiving being converted to position signalling, and position signalling is transmitted
To control chip；
The position signalling receiving is converted to range data by described control chip, and by distance data transmission to channel radio
Letter module；
Described wireless communication module is used for the distance data transmission receiving to backstage computer.
Preferably, the quantity of described LC sensor is multiple.It can solve asking of the quantity setting of LC sensor further
Topic.
Preferably, described signal processing chip adopts the LDC chip of Texas Instrument.It can solve signal transacting core further
The problem of the selection of piece.
Preferably, the MSP430 of the selection Texas Instrument of described control chip.The selection of control chip can be solved further
Problem.
Preferably, the power supply mode of described control chip, signal processing chip and wireless communication module is lithium battery power supply
Or the solar powered or temperature difference is powered or is vibrated power supply.The technology of its selection that can solve power supply mode further is asked
Topic.
The two of the purpose of this utility model employ the following technical solutions realization：
A kind of loosened screw monitoring system, including any one loosened screw detection means such as above-mentioned, also includes bolt, spiral shell
Mother and connector, described bolt includes bolt head and screw rod, and described bolts and nuts cooperation is installed on connector, described spiral shell
LC sensor in the loosening monitoring device of silk is used for measuring bolt head to the distance between connector or measurement nut to even
The distance between fitting.
Preferably, also include non-metal board, described LC sensor is flush-mounted on non-metal board, and described non-metal board is installed on
At connector.The technical problem of the installation of LC sensor can be solved further.
Preferably, also include elastomer, described elastomer is installed between non-metal board and bolt head.It can be further
Ensure the accurate technical problem of measurement.
Preferably, described elastomer is Belleville spring washer or Century Spring packing ring or V-type bullet
Property pad.It can solve the problems, such as the selection of elastomer further.
Compared to existing technology, the beneficial effects of the utility model are：
Tighten up a screw compared with loosening monitoring device with existing market, device of the present utility model has that structure is simple, installation side
Just the advantages of, low cost, monitoring accuracy height, range are wide, and this device does not need making regular check on of maintainer, really
Can accomplish on-line checking, greatly save manpower, and improve the operating efficiency of monitoring bolt, improve the work of equipment
Make efficiency.
Brief description
Fig. 1 is the circuit structure block diagram of the utility model loosened screw monitoring device；
Fig. 2 is the structure chart of the utility model loosened screw monitoring system；
Fig. 3 is the profile of the utility model loosened screw monitoring system；
Fig. 4 is the utility model non-metal board and V-type elastomeric pad coordinates installation diagram；
Fig. 5 is the structure chart one of the utility model LC sensor；
Fig. 6 is the structure chart two of the utility model LC sensor.
Reference：1st, LC sensor；2nd, bolt；3rd, nut；4th, connector；5th, non-metal board；6th, V-type elastomeric pad.
Specific embodiment
Below, in conjunction with accompanying drawing and specific embodiment, the utility model is described further：
As shown in figure 1, the utility model provides a kind of loosened screw monitoring device, pass including the LC being electrically connected with successively
Sensor 1, signal processing chip, control chip and wireless communication module, described LC sensor 1 is a coil；In the present embodiment,
This LC sensor 1 has been integrated on one piece of non-metal board 5, and the thickness of this LC sensor 1 can accomplish tens microns, according to engineering
In real needs this coil can be fabricated to variously-shaped, and flexible manufacturing can be carried out, as shown in Figure 5 can be direct
Coil encircling is embedded in non-metal board 5, or as shown in fig. 6, each coil is arranged at separately as a sensor
On non-metal board 5, embedded sensor can be increased according to actual demand or be reduced, and as Fig. 6 coil
Arrangement mode, can be increased inductance value by connecting, and then adjust the measurement range of sensor.
Described LC sensor 1 is used for measuring itself inductance signal and tested metal between, and inductance signal is transmitted to letter
Number process chip；The value that this LC sensor passes through to change circuit coil resistance R and its corresponding electric capacity C can change circuit
Resonant frequency, its operating frequency can be tuned between 1kHZ-10MHZ scope, and it can be prevented effectively from common in engineering structure
Power frequency component, and can effectively resist the interference of other frequency range electromagnetic waves extraneous, and sensor exports correct scope
Voltage magnitude is critically important, and this will influence whether the accuracy of sensor measurement, and the amplitude of voltage is mainly subject to the shadow of the resistance R of coil
Ring, so needing to be tested to determine the size of coil before each different object is found range.
Described signal processing chip is used for for the inductance signal receiving being converted to position signalling, and position signalling is transmitted
To control chip；Described signal processing chip adopts the LDC chip of TI；It can effectively process LC sensor 1 and measured object
The distance between on the lc circuit that causes of change L inductance value variable quantity, such that it is able to hanging down of direct measurement object and sensor
It is other that directly position, and the precision of measurement position can reach Subnano-class.Can be by adjusting when carrying out actual measurement
The number of turns of planar coil, live width, line be thick and line between spacing changing scope and the accuracy value of its measurement distance, by adjusting line
The indices of circle changing certainty of measurement and measurement range makes the range of device of the present utility model more extensive,
Can be not only used for loosened screw monitoring, apply also for otherwise distance monitoring, and due to small volume so that it is pacified
Dress also convenience more.
The position signalling receiving is converted to range data by described control chip, and by distance data transmission to channel radio
Letter module；The MSP430 of the selection Texas Instrument TI of described control chip, described control chip, signal processing chip and channel radio
The power supply mode of letter module is lithium battery power supply or the solar powered or temperature difference is powered or vibrated power supply, so can subtract
Few trouble directly supplying electrical connection is so that install convenience more.This control chip can also be timed and arouse and dormancy two
The setting of the state of kind, the energy required for reduction system, and then extend the service life of monitoring device.
Described wireless communication module is used for the distance data transmission receiving to backstage computer, by wireless communication module
Setting, in real time the equipment of front end can be monitored accordingly on backstage, the working condition of receiving device, real be realized
The purpose of the on-line monitoring of safety.
As shown in Figures 2 and 3, the utility model provides a kind of loosened screw monitoring system, including above-described embodiment institute
The loosened screw monitoring device of description, also includes bolt 2, nut 3, non-metal board 5, elastomer and connector 4, described bolt 2
Including bolt head and screw rod, described bolt 2 is installed on connector 4 with nut 3 cooperation,
Described LC sensor 1 is used for measuring bolt head to the distance between connector 4 or measurement nut 3 to connector
The distance between；LC sensor has several mounting means, can be directly embedded in bolt head or be embedded in nut 3 or
Person is embedded in non-metal board 5, in the present embodiment, chooses and is embedded in non-metal board 5 and carries out as specific embodiment
Illustrate, but not only have a kind of this embodiment, the phase by those skilled in the art for other installation site mounting means
The improvement answered, can carry out range measurement falls within protection domain of the present utility model.
In the present embodiment, described LC sensor 1 is flush-mounted on non-metal board 5, and described non-metal board 5 is installed on connector
At 4；This mounting means simple and reliable it is only necessary to very little change is carried out to bolt 2 structure, the connection of bolt 2 can't be affected
Performance.And LC sensor 1 needs before installing to realize the displacement range of a default safety, to determine bolt 2 and LC sensor 1
When distance reaches a certain threshold value, it is considered as the situation that bolt 2 loosens.
The type of attachment of bolt 2 mainly has plain bolt to connect and articulation hole bolt.In common bolt connection, bolt
2 are coordinated for gap with connector 4, may be when bolt 2 loosens, and LC sensor 1 is for testee (bolt 2 or nut 3)
It is not subjected to displacement, there is error for actual monitoring, it can be considered to an elastomer, institute are increased on non-metal board 5
State elastomer to be installed between non-metal board 5 and bolt head.Described elastomer be Belleville spring washer or
Century Spring packing ring or V-type elastomeric pad 6.It is illustrated in figure 4 the cooperation peace of non-metal board 5 and V-type elastomeric pad 6
Dress relation, when bolt is in tight condition, V-type elastomeric pad 6 has certain compression displacement amount, if bolt 2 occurs pine
Dynamic situation, this V-type elastomeric pad 6 can occur resilience, promotes testee or sensor that relative displacement occurs, can be effective
Avoid plain bolt to connect loosening and the situation of relative displacement does not occur, can be that bolt looseness provides further safety monitoring
Ensure.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection of the utility model claim
Within the scope of.
Claims (9)
1. a kind of loosened screw monitoring device is it is characterised in that include LC sensor, the signal transacting core being electrically connected with successively
Piece, control chip and wireless communication module, described LC sensor is a planar coil；
Described LC sensor is used for measuring itself inductance signal and tested metal between, and inductance signal is transmitted to signal transacting
Chip；
Described signal processing chip is used for for the inductance signal receiving being converted to position signalling, and position signalling is transmitted to control
Coremaking piece；
The position signalling receiving is converted to range data by described control chip, and by distance data transmission to radio communication mold
Block；
Described wireless communication module is used for the distance data transmission receiving to backstage computer.
2. loosened screw monitoring device as claimed in claim 1 is it is characterised in that the quantity of described LC sensor is multiple.
3. loosened screw monitoring device as claimed in claim 1 is it is characterised in that described signal processing chip adopts Dezhou instrument
The LDC chip of device.
4. loosened screw monitoring device as claimed in claim 1 is it is characterised in that the selection Texas Instrument of described control chip
MSP430.
5. loosened screw monitoring device as claimed in claim 1 is it is characterised in that described control chip, signal processing chip
It is lithium battery power supply with the power supply mode of wireless communication module or the solar powered or temperature difference is powered or vibrated power supply.
6. a kind of loosened screw monitoring system is it is characterised in that include the loosened screw as described in claim 1-5 any one
Monitoring device, bolt, nut and connector, described bolt includes bolt head and screw rod, and described bolts and nuts cooperation is installed
On connector, the LC sensor in described loosened screw monitoring device is used for measuring bolt head the distance between to connector
Or measurement nut is the distance between to connector.
7. it is characterised in that also including non-metal board, described LC senses loosened screw monitoring system as claimed in claim 6
Device is flush-mounted on non-metal board, and described non-metal board is installed at connector.
8. loosened screw monitoring system as claimed in claim 7 it is characterised in that also including elastomer, pacify by described elastomer
It is loaded between non-metal board and bolt head.
9. loosened screw monitoring system as claimed in claim 8 is it is characterised in that described elastomer is Belleville spring
Packing ring or Century Spring packing ring or V-type elastomeric pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620918365.7U CN205941933U (en) | 2016-08-22 | 2016-08-22 | Screw loose monitoring devices and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620918365.7U CN205941933U (en) | 2016-08-22 | 2016-08-22 | Screw loose monitoring devices and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941933U true CN205941933U (en) | 2017-02-08 |
Family
ID=57948680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620918365.7U Active CN205941933U (en) | 2016-08-22 | 2016-08-22 | Screw loose monitoring devices and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941933U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054263A (en) * | 2016-08-22 | 2016-10-26 | 杨志强 | Screw loosening monitoring device and system |
| CN107681727A (en) * | 2017-10-24 | 2018-02-09 | 北京小米移动软件有限公司 | The control method and device of electronic equipment |
| CN108050144A (en) * | 2017-12-13 | 2018-05-18 | 柳州上丰自动化设备有限公司 | A kind of screw |
| 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 |
| CN108507609A (en) * | 2018-04-20 | 2018-09-07 | 北京必可测科技股份有限公司 | Bolt looseness monitoring device and bolt looseness monitoring method |
| CN109324668A (en) * | 2018-09-10 | 2019-02-12 | 联想(北京)有限公司 | A kind of lock-in detection structure and electronic equipment |
| CN111829768A (en) * | 2020-07-28 | 2020-10-27 | 哈尔滨工业大学 | Bolt looseness sensing device based on piezoelectric traction effect |
-
2016
- 2016-08-22 CN CN201620918365.7U patent/CN205941933U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054263A (en) * | 2016-08-22 | 2016-10-26 | 杨志强 | Screw loosening monitoring device and system |
| CN107681727A (en) * | 2017-10-24 | 2018-02-09 | 北京小米移动软件有限公司 | The control method and device of electronic equipment |
| CN107681727B (en) * | 2017-10-24 | 2020-11-13 | 北京小米移动软件有限公司 | Control method and device of electronic equipment |
| CN108050144A (en) * | 2017-12-13 | 2018-05-18 | 柳州上丰自动化设备有限公司 | A kind of screw |
| 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 |
| CN108181659B (en) * | 2018-02-11 | 2024-03-15 | 上海振华重工(集团)股份有限公司 | Loosening detection device for fastener and detection method thereof |
| CN108507609A (en) * | 2018-04-20 | 2018-09-07 | 北京必可测科技股份有限公司 | Bolt looseness monitoring device and bolt looseness monitoring method |
| CN108507609B (en) * | 2018-04-20 | 2023-10-13 | 北京必可测科技股份有限公司 | Bolt loosening monitoring device and bolt loosening monitoring method |
| CN109324668A (en) * | 2018-09-10 | 2019-02-12 | 联想(北京)有限公司 | A kind of lock-in detection structure and electronic equipment |
| CN111829768A (en) * | 2020-07-28 | 2020-10-27 | 哈尔滨工业大学 | Bolt looseness sensing device based on piezoelectric traction effect |
| CN111829768B (en) * | 2020-07-28 | 2022-07-01 | 哈尔滨工业大学 | Bolt looseness perception device based on piezoelectric traction effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210115 Address after: 1 / F, No.8, Keji 9 Road, high tech Zone, Zhuhai, Guangdong 519000 Patentee after: ZHUHAI YADO MONITORING TECHNOLOGY Co.,Ltd. Address before: No.8, Keji 9 Road, high tech Zone, Zhuhai, Guangdong 519000 Patentee before: Yang Zhiqiang |
|
| TR01 | Transfer of patent right |