CN200979539Y - A portable crack monitoring device - Google Patents
A portable crack monitoring device Download PDFInfo
- Publication number
- CN200979539Y CN200979539Y CN 200620165926 CN200620165926U CN200979539Y CN 200979539 Y CN200979539 Y CN 200979539Y CN 200620165926 CN200620165926 CN 200620165926 CN 200620165926 U CN200620165926 U CN 200620165926U CN 200979539 Y CN200979539 Y CN 200979539Y
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- CN
- China
- Prior art keywords
- crack
- sheet
- converter
- light
- shining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a portable crack monitoring device for monitoring element crack, which comprises a crack extension sheet, a magnifier, a selector, an A/D converter, a single chip, a shining sheet, an acoustic alarm, an accumulator and a keyboard. The crack extension sheet is connected with one end of the selector through the magnifier, and the other end of the selector is connected with the A/D converter. The A/D converter is connected with the single chip, which is separately connected with the shining sheet, the acoustic alarm, the accumulator and the keyboard. A plurality of resistance wires of the same distance are arranged on the crack extension sheet. The shining sheet comprises light-emitting diodes. Breakage signals of monitored elements are acquired by the crack extension sheet, which is stuck on surfaces of monitored elements during testing. Crack length is indicated by the shining sheet length which comprises light-emitting diodes. Real-time monitoring of monitored element crack extension state during the test process is achieved, and crack length indication is visual and appreciable. The utility model has the advantages that operation is simple, and cost is low.
Description
Technical field: the utility model relates to a kind of portable crack monitoring device that is used to monitor part crack.
Background technology: current aspect the crack monitoring of testpieces, monitoring device commonly used has supersonic detection device, ray detecting apparatus, microwave detecting device, magnetic pick-up unit etc., these devices all need test stopped testpieces being taken off to measure, measured crackle signal all is static i.e. this time of crackle crackles when measuring, the spread scenarios of crackle then can not be done real-time dynamic monitoring, and is not directly perceived to the crackle Length Indication.The also normal detection method that adopts surface seepage sprays penetrating fluid during the surface measurements crackle on testpieces, uses developer then crack length is displayed.The cycle of this method measurement crackle is long, and infiltration and development need the dozens of minutes time at least, can not carry out dynamic monitoring to the crackle spread scenarios in the process of test.
Summary of the invention: the purpose of this utility model provides a kind of portable crack monitoring device that can monitor in real time measured piece.Technical solution of the present utility model is, device is made up of crack propagation sheet, amplifier, selector switch, A/D converter, single-chip microcomputer, light-emitting section, voice guard, storer and keyboard, the crack propagation sheet is connected with an end of selector switch through amplifier, the other end and the A/D converter of selector switch join, A/D converter is connected to single-chip microcomputer, single-chip microcomputer also with light-emitting section,, voice guard, storer and keyboard join.Arrange the resistance wire that many spacings equate on the crack propagation sheet, light-emitting section is rearranged by light emitting diode.Advantage applies of the present utility model obtains by the crack propagation sheet that sticks on monitored piece surface just in test in the break signal of monitored part, spread signal is converted to digital signal through amplifying the back by the A/D change-over circuit, carry out the operation control of data processing and system by single-chip microcomputer, the length of crackle is indicated by the length of the light-emitting section be made up of light emitting diode, realized in process of the test the real-time monitoring to tested part crack propagation situation, the crack length indication is obviously directly perceived.The utility model is simple to operate, and is with low cost.
Description of drawings:
Fig. 1 is the utility model structured flowchart;
Fig. 2 is crack propagation sheet and socket connection diagram.
Embodiment
Device is made up of crack propagation sheet 1, amplifier 2, selector switch 3, A/D converter 4, single-chip microcomputer 5, light-emitting section 6, storer 7, keyboard 8 and voice guard 10, the socket 12 of device is connected with crack propagation sheet 1, crack propagation sheet 1 is connected with an end of selector switch 3 through amplifier 2, the other end of selector switch 3 and A/D converter 4 join, A/D converter 4 is connected to single-chip microcomputer 5, single-chip microcomputer 5 also with light-emitting section 6,, voice guard 10, storer 7 and keyboard 8 join.Arrange the resistance wire 9 that many spacings equate on the crack propagation sheet 1, light-emitting section 6 is rearranged by light emitting diode.
During work, crack propagation sheet 1 is sticked on tested spare surface, when the surface has crackle to produce, cause the fracture successively of thin resistance wire 9, then stepped also takes place in the resistance of crack propagation sheet 1 thereupon.By circuit, be voltage signal with the resistance variations signal transition, after amplifying through amplifier 2, in A/D converter 4, carry out the A/D conversion, being about to analog-signal transitions is digital signal, makes things convenient for single-chip microcomputer 5 to handle.When crack propagation took place, single-chip microcomputer 5 was at first inquired about the primary data that is stored in the passage in the storer 7, stored in the storer 7 after primary data is added 1 again and preserved.Then, voice guard 10 sends alarm sound, and prompting crack propagation has taken place at this moment, and simultaneously, the light-emitting section 6 that light emitting diode is formed is also lighted, and shows the radical of fracture at present.Chimes of doom can be pointed out the staff to write down and be checked.How much length of tested part crackle can by determining that the light-emitting section of being made up of the LED light emitting diode is lighted, as 9 of resistance wire fractures, light emitting diode has been lighted 9, the crack propagation sheet spacing that this test is adopted is 0.25mm, and then the crack length of indication this moment is 0.25 * 9=2.25mm.Along with the continuous expansion of crackle, the light emitting diode of lighting also constantly increases.
Crack propagation passage of the present utility model can be a plurality of, carries out conversion between a plurality of crack propagation passages by crack monitoring software 11.
Claims (2)
1. portable crack monitoring device, form by amplifier, selector switch, A/D converter, single-chip microcomputer, light-emitting section, voice guard, storer and keyboard, it is characterized in that, the crack propagation sheet is connected with an end of selector switch through amplifier, the other end and the A/D converter of selector switch join, A/D converter is connected to single-chip microcomputer, single-chip microcomputer also with light-emitting section,, voice guard, storer and keyboard join.
2. portable crack monitoring device according to claim 1 is characterized in that, the resistance wire that arrangement pitches equates on the crack propagation sheet, and light-emitting section is rearranged by light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165926 CN200979539Y (en) | 2006-12-05 | 2006-12-05 | A portable crack monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165926 CN200979539Y (en) | 2006-12-05 | 2006-12-05 | A portable crack monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200979539Y true CN200979539Y (en) | 2007-11-21 |
Family
ID=38979920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620165926 Expired - Fee Related CN200979539Y (en) | 2006-12-05 | 2006-12-05 | A portable crack monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200979539Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442637A (en) * | 2016-08-19 | 2017-02-22 | 北京必创科技股份有限公司 | Flange crack monitoring device and method |
| CN110487165A (en) * | 2019-08-23 | 2019-11-22 | 北京石墨烯技术研究院有限公司 | Metal Crack detection sensor and system |
| CN111366616A (en) * | 2020-05-28 | 2020-07-03 | 苏交科集团股份有限公司 | Steel bridge deck fatigue crack measuring device and method |
-
2006
- 2006-12-05 CN CN 200620165926 patent/CN200979539Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442637A (en) * | 2016-08-19 | 2017-02-22 | 北京必创科技股份有限公司 | Flange crack monitoring device and method |
| CN106442637B (en) * | 2016-08-19 | 2020-01-03 | 北京必创科技股份有限公司 | Flange crack monitoring device and method |
| CN110487165A (en) * | 2019-08-23 | 2019-11-22 | 北京石墨烯技术研究院有限公司 | Metal Crack detection sensor and system |
| CN111366616A (en) * | 2020-05-28 | 2020-07-03 | 苏交科集团股份有限公司 | Steel bridge deck fatigue crack measuring device and method |
| CN111366616B (en) * | 2020-05-28 | 2020-08-11 | 苏交科集团股份有限公司 | Steel bridge deck fatigue crack measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20131205 |