CN103812611B - Eddy current testing data transmission algorithm - Google Patents
Eddy current testing data transmission algorithm Download PDFInfo
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- CN103812611B CN103812611B CN201410053496.9A CN201410053496A CN103812611B CN 103812611 B CN103812611 B CN 103812611B CN 201410053496 A CN201410053496 A CN 201410053496A CN 103812611 B CN103812611 B CN 103812611B
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- 238000013480 data collection Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 6
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Abstract
The invention relates to an eddy current testing data transmission algorithm. The algorithm achieves design and data collection through the following steps including, firstly, according to the variety of data, selecting characteristic parameters including excitation frequency, impedance amplitude, phase information, sampling channels, number of sampling times and sampling frequency of an eddy current probe, according to the characteristic parameters, selecting 12 detecting channels, and performing transmission through a serial data transmission protocol; secondly, developing data frames; thirdly, identifying the data frame. The eddy current testing data transmission algorithm is reasonable in structure, advanced in data frame design concept and obvious in application effects in communication systems.
Description
Technical field
The present invention relates to a kind of collecting method is and in particular to a kind of EDDY CURRENT data transfer algorithms.
Background technology
Eddy current detection is one kind of Dynamic Non-Destruction Measurement, and it is the alternating electromagnetic field being produced by magnet exciting coil, in quilt
Survey and in conductor, produce current vortex, entered by measuring the change of the relevant information such as the voltage of detection coil or the amplitude of impedance, phase place
And detect by the situation of geodesic structure or damage situations.Currents nondestructive detection system can be divided into defect detection system and signal
Processing system.Signal processing system is analyzed to signal processing work；Defect detection system mainly completes data communication and adopts
Collection.During signal processing system carries out signal analysis and controls, need to the control command of hardware components and some ginsengs
Number transmission is gone down.Defect detection system sends software management analyses part to correlation analysiss data such as the amplitude gathering, phase places,
Then pass through and using suitable inversion algorithm, these electromagnetic datas be analyzed, finally obtain by the parameter to be measured of geodesic structure or
Person's extent of damage.
Content of the invention
Instant invention overcomes the deficiencies in the prior art are it is proposed that a kind of EDDY CURRENT data transfer algorithms, described algorithm knot
Rationally, Frame design concept is advanced for structure, and in communication system applications, effect is substantially, highly reliable, has very strong practicality.
The technical scheme is that：A kind of EDDY CURRENT data transfer algorithms, are designed using data below form
Data gathers：
The first step：According to data type, selected characteristic number is the driving frequency of eddy current probe, the amplitude of impedance, phase place
Information, sampling channel, number of times and frequency, are chosen 12 sense channels according to characteristic number, are carried out by serial data transport protocol
Transmission；
Second step：Frame is formulated
Frame includes frame head, classification, transmission data and postamble, frame head include FSEND, SSEND, CSEND, DSEND and
FEND, FSEND represent the Frame sending first, and SSEND represents the Frame of second transmission, and now, recipient should delete
The partial data being previously sent, CSEND represents order data, and tell recipient's transmission is order, and FEND represents the number of transmission
According to end mark, tell that receiving side data is sent, DSEND represents non-order data, tell recipient's transmission is data,
Several fields of frame head can be combined and use, and such as FSEND+CSEND represents and sends order data for the first time, classification include CMD, NUM,
Amplitude, phase place and ID coding, CMD represents command word, represent send for non-data field, described field is coordinated with frame head to be made
With, NUM statement send for non-order data, described field and frame head use cooperatively, and amplitude, phase place and ID encode and represent respectively
The parameter information of data, transmission data includes byte number, the number of packet, compression type, data volume data tail, byte number
Represent the byte number of the real data of this transmission, the number of packet represents the quantity of the packet of this transmission, compresses class
Type represents compressed data or the unpacked data of transmission, and data volume represents the data of this transmission, and the data of transmission includes width
Value Data, phase data, gain data, frequency data, sampling channel ID, sample frequency data, sampling number data；Data tail
Represent that the data that this transmits is intermediate data or final data, that is, differentiate that data is transmitted or next frame continues to connect
Receive data；Postamble includes check mark, this frame end mark, the number of transmissions mark and receives ID mark；Receive ID mark to represent
Specified receiving device, the equipment that other are not specified can not receive, and receives ID traffic sign placement in postamble, it is to avoid between equipment
Communication receives asynchrony phenomenon, and the liaison between each equipment can be made to keep unification；
3rd step：The identification of Frame
When defect detection system receives the Frame that signal processing system sends, first area is carried out to Frame head
Point, if the definition of frame initial character is illegal, send the instruction of invalid data bag；If the frame receiving is first to be legal, enter
Row acceptance inspection works, if inspection mistake, returns error message, otherwise, normally receives.
The present invention has the advantages that：
1) rationally, Frame design concept is advanced, and in communication system applications, effect is obvious for present configuration.
2) present invention is highly reliable, has very strong practicality.
Specific embodiment
The present invention is designed data collection using data below form：
A kind of EDDY CURRENT data transfer algorithms, are designed data collection using data below form：
The first step：According to data type, selected characteristic number is the driving frequency of eddy current probe, the amplitude of impedance, phase place
Information, sampling channel, number of times and frequency, are chosen 12 sense channels according to characteristic number, are carried out by serial data transport protocol
Transmission；
Second step：Frame is formulated
Frame includes frame head, classification, transmission data and postamble, frame head include FSEND, SSEND, CSEND, DSEND and
FEND, FSEND represent the Frame sending first, and SSEND represents the Frame of second transmission, and now, recipient should delete
The partial data being previously sent, CSEND represents order data, and tell recipient's transmission is order, and FEND represents the number of transmission
According to end mark, tell that receiving side data is sent, DSEND represents non-order data, tell recipient's transmission is data,
Several fields of frame head can be combined and use, and such as FSEND+CSEND represents and sends order data for the first time, classification include CMD, NUM,
Amplitude, phase place and ID coding, CMD represents command word, represent send for non-data field, described field is coordinated with frame head to be made
With, NUM statement send for non-order data, described field and frame head use cooperatively, and amplitude, phase place and ID encode and represent respectively
The parameter information of data, transmission data includes byte number, the number of packet, compression type, data volume data tail, byte number
Represent the byte number of the real data of this transmission, the number of packet represents the quantity of the packet of this transmission, compresses class
Type represents compressed data or the unpacked data of transmission, and data volume represents the data of this transmission, and the data of transmission includes width
Value Data, phase data, gain data, frequency data, sampling channel ID, sample frequency data, sampling number data；Data tail
Represent that the data that this transmits is intermediate data or final data, that is, differentiate that data is transmitted or next frame continues to connect
Receive data；Postamble includes check mark, this frame end mark, the number of transmissions mark and receives ID mark；Receive ID mark to represent
Specified receiving device, the equipment that other are not specified can not receive, and receives ID traffic sign placement in postamble, it is to avoid between equipment
Communication receives asynchrony phenomenon, and the liaison between each equipment can be made to keep unification；If receiving ID to indicate that certain is special
Form is then it represents that can all receive.
3rd step：The identification of Frame
When defect detection system receives the Frame that signal processing system sends, first area is carried out to Frame head
Point, if the definition of frame initial character is illegal, send the instruction of invalid data bag；If the frame receiving is first to be legal, enter
Row acceptance inspection works, if inspection mistake, returns error message, otherwise, normally receives.
Claims (1)
1. a kind of EDDY CURRENT data transfer algorithms, is characterized in that：Data collection is designed using data below form：
The first step：According to data type, selected characteristic number is the driving frequency of eddy current probe, the amplitude of impedance, phase information,
Sampling channel, number of times and frequency, are chosen 12 sense channels according to characteristic number, are transmitted by serial data transport protocol；
Second step：Frame is formulated
Frame includes frame head, classification, transmission data and postamble, and frame head includes FSEND, SSEND, CSEND, DSEND and FEND,
FSEND represents the Frame sending first, and SSEND represents the Frame of second transmission, and now, recipient should delete and previously send out
The partial data sent, CSEND represents order data, and tell recipient's transmission is order, and FEND represents the ED of transmission
Mark, tells that receiving side data is sent, DSEND represents non-order data, and tell recipient's transmission is data, frame head
Several fields can be combined and use, and FSEND+CSEND represents transmission order data for the first time, and classification includes CMD, NUM, amplitude, phase
Position and ID coding, CMD represents command word, represent send for non-data field, described field and frame head use cooperatively, NUM table
State transmission for non-order data, described field and frame head use cooperatively, and amplitude, phase place and ID coding represent the ginseng of data respectively
Number information, transmission data includes byte number, the number of packet, compression type, data volume data tail, and byte number represents this
The byte number of the real data of transmission, the number of packet represents the quantity of the packet of this transmission, and compression type represents to be sent out
The compressed data sent or unpacked data, data volume represents the data of this transmission, and the data of transmission includes amplitude data, phase
Position data, gain data, frequency data, sampling channel ID, sample frequency data, sampling number data；Data tail represents this
The data of transmission is intermediate data or final data, that is, differentiate that data is transmitted or next frame continues to data；
Postamble includes check mark, this frame end mark, the number of transmissions mark and receives ID mark；Receive ID mark and represent specified reception
Equipment, the equipment that other are not specified can not receive, and receives ID traffic sign placement in postamble, it is to avoid the communication between equipment receives
Asynchrony phenomenon, can make the liaison between each equipment keep unification；
3rd step：The identification of Frame
When defect detection system receives the Frame that signal processing system sends, first Frame head is made a distinction,
If the definition of frame initial character is illegal, send the instruction of invalid data bag；If the frame receiving is first to be legal, connect
Receive inspection work, if inspection mistake, return error message, otherwise, normally receive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410053496.9A CN103812611B (en) | 2014-02-11 | 2014-02-11 | Eddy current testing data transmission algorithm |
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| CN201410053496.9A CN103812611B (en) | 2014-02-11 | 2014-02-11 | Eddy current testing data transmission algorithm |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364323Y (en) * | 2009-02-24 | 2009-12-16 | 武汉钢铁(集团)公司 | Vortex nondestructive flaw detection device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364323Y (en) * | 2009-02-24 | 2009-12-16 | 武汉钢铁(集团)公司 | Vortex nondestructive flaw detection device |
Non-Patent Citations (3)
| Title |
|---|
| 一种基于电涡流传感器的数据采集系统;顾国华，陈钱，张保民;《光电子技术》;19970930;第17卷(第3期);第170-176页 * |
| 涡流探伤中数据的实时采集和实时处理;杨卫峰，宋京伟，杨树军;《华东交通大学学报》;20010331;第18卷(第1期);第25-27页 * |
| 电涡流检测系统中通信和数据库设计;武海鑫，范孟豹，唐旭华，黄平捷，周泽魁;《化工自动化及仪表》;20070430;第34卷(第2期);第43-47页 * |
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