CN105984474B - A kind of broken rail detection method based on wideband encoding electric signal - Google Patents
A kind of broken rail detection method based on wideband encoding electric signal Download PDFInfo
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- CN105984474B CN105984474B CN201510068827.0A CN201510068827A CN105984474B CN 105984474 B CN105984474 B CN 105984474B CN 201510068827 A CN201510068827 A CN 201510068827A CN 105984474 B CN105984474 B CN 105984474B
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Abstract
The invention discloses a kind of broken rail detection methods based on wideband encoding electric signal, emit wideband coded signal by detection terminal, which is formed by positive and negative FM signal or pseudo noise signal are compound；Adjacent monitoring terminal receives signal, and is converted to digital signal in real time, and the digital signal processing unit of monitoring terminal carries out relevant treatment by copy coherent signal Processing Algorithm；The maximum value of two associated processing outcomes of obtaining step, i.e. correlation peak；Correlation peak and fixed thresholding are compared, if obtaining the peak value of thresholding before the deadline, show that rail is good；The present invention employs broadband signal correlation processing technique in signal transmitting and receiving, with very strong anti-interference ability, it can be worked normally under strong interference, such as below 0db, and it will not be influenced by broadband noise and the interference of strong line spectrum, wideband coded signal detection technique solves the problems, such as false-alarm and fails to report, and the reliability of broken rail detection greatly improved.
Description
Technical field
Broken rail detection method more particularly to a kind of breaking based on wideband encoding electric signal the present invention relates to a kind of electric signal
Rail detection method.
Background technology
Broken rail real-time detecting system is the important system for ensureing railroad train safe operation.By being examined on broken rail actual time line
It surveys, broken rail can be found so as to timely processing in first time；Presently, there are electric signal single frequency carrier mode there are anti-interference
Ability is weak, false-alarm easily occurs and the problem of fail to report, the reliability detected in real time to improve broken rail, it is necessary to be subject to the prior art
It improves, studies a kind of electric signal broken rail detection method of high reliability.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of broken rail based on wideband encoding electric signal
Detection method.
The present invention is achieved through the following technical solutions above-mentioned purpose：
The present invention includes the following steps：
Step 1：Wideband coded signal is emitted by detection terminal, the signal is by positive and negative FM signal or pseudo noise signal
Compound composition；
Step 2：Adjacent monitoring terminal receives signal, and is converted to digital signal in real time, the digital signal of monitoring terminal
Processing unit carries out relevant treatment by copy coherent signal Processing Algorithm；
Step 3：The maximum value of two associated processing outcomes of obtaining step, i.e. correlation peak；
Step 4：Correlation peak and fixed thresholding are compared, if obtaining the peak of thresholding before the deadline
Value, shows that rail is good, if there is no the correlation peak of thresholding, shows rail fracture situation occur；
Step 5：If there is rail fracture situation, correlation peak with the tables of data demarcated is compared, judges occur
Broken condition.
Further, according to step 2, the algorithm is：Copy signal be Sb (n), n=1,2,3 ..., N
It is S (n), n=1,2,3 ..., N that t moment, which receives signal,
Sb (n) and S (n) is N-dimensional row vector,
Then t moment copy associated processing outcomes R (t) such as following formula：
R(t)=Sb(n)*S(n)T
Wherein, T represents that row vector transposition is column vector.
The beneficial effects of the present invention are：
The present invention employs broadband signal correlation processing technique in signal receiving end, has very strong anti-interference ability, can be with
It is worked normally under strong interference, such as 0db hereinafter, and will not be influenced by broadband noise and the interference of strong line spectrum, wideband encoding
Signal detection technique solves the problems, such as false-alarm and fails to report, and the reliability of broken rail detection greatly improved.
Description of the drawings
Fig. 1 is a kind of flow diagram of broken rail detection method based on wideband encoding electric signal of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1：The present invention includes the following steps：
Step 1：Wideband coded signal is emitted by detection terminal, the signal is by positive and negative FM signal or pseudo noise signal
Compound composition；
Step 2：Adjacent monitoring terminal receives signal, and is converted to digital signal in real time, the digital signal of monitoring terminal
Processing unit carries out relevant treatment by copy coherent signal Processing Algorithm；
Step 3：The maximum value of two associated processing outcomes of obtaining step, i.e. correlation peak；
Step 4：Correlation peak and fixed thresholding are compared, if obtaining the peak of thresholding before the deadline
Value, shows that rail is good, if there is no the correlation peak of thresholding, shows rail fracture situation occur；
Step 5：If there is rail fracture situation, correlation peak with the tables of data demarcated is compared, judges occur
Broken condition.
Embodiment：
If copy signal is Sb (n), n=1,2,3 ..., N
It is the .N of S (n), n=1,2,3 ... that t moment, which receives signal,
Sb (n) and S (n) is N-dimensional row vector
Then t moment copy associated processing outcomes R (t) such as following formula：
R(t)=Sb(n)*S(n)T
Those skilled in the art do not depart from the present invention essence and spirit, can there are many deformation scheme realize the present invention,
It these are only preferably feasible embodiment of the invention, not thereby limit to the interest field of the present invention, it is all with the present invention
The equivalent structure variation that specification and accompanying drawing content are made, is both contained within the interest field of the present invention.
Claims (2)
1. a kind of broken rail detection method based on wideband encoding electric signal, it is characterised in that：Include the following steps：
Step 1：Wideband coded signal is emitted by detection terminal, the signal is compound by positive and negative FM signal or pseudo noise signal
Composition；
Step 2：Adjacent monitoring terminal receives signal, and is converted to digital signal in real time, the Digital Signal Processing of monitoring terminal
Unit carries out relevant treatment by copy coherent signal Processing Algorithm；
Step 3：The maximum value of two associated processing outcomes of obtaining step, i.e. correlation peak；
Step 4：Correlation peak and fixed thresholding are compared, if obtaining the peak value of thresholding, table before the deadline
Bright rail is good, if there is no the correlation peak of thresholding, shows rail fracture situation occur；
Step 5：If there is rail fracture situation, correlation peak with the tables of data demarcated is compared, judges to be broken
Situation.
2. a kind of broken rail detection method based on wideband encoding electric signal according to claim 1, it is characterised in that：According to
Step 2, the algorithm are：Copy signal be Sb (n), n=1,2,3 ..., N
It is S (n), n=1,2,3 ..., N that t moment, which receives signal,
Sb (n) and S (n) is N-dimensional row vector
Then t moment copy associated processing outcomes R (t) such as following formula：
R(t)=Sb(n)*S(n)T
Wherein, T represents that row vector transposition is column vector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068827.0A CN105984474B (en) | 2015-02-10 | 2015-02-10 | A kind of broken rail detection method based on wideband encoding electric signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068827.0A CN105984474B (en) | 2015-02-10 | 2015-02-10 | A kind of broken rail detection method based on wideband encoding electric signal |
Publications (2)
| Publication Number | Publication Date |
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| CN105984474A CN105984474A (en) | 2016-10-05 |
| CN105984474B true CN105984474B (en) | 2018-06-22 |
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| CN201510068827.0A Active CN105984474B (en) | 2015-02-10 | 2015-02-10 | A kind of broken rail detection method based on wideband encoding electric signal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286587A (en) * | 1999-11-12 | 2001-03-07 | 深圳市中兴通讯股份有限公司 | Time slot synchronizer in regional search for WCDMA system |
| JP2006113002A (en) * | 2004-10-18 | 2006-04-27 | Nsk Ltd | Anomaly diagnosis system for mechanical equipment |
| CN102923164A (en) * | 2012-09-14 | 2013-02-13 | 上海交通大学 | High-speed rail health monitoring system based on ultrasonic guide wave and wireless network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080002977A (en) * | 2005-04-22 | 2008-01-04 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Method of mechanical shock detection and method and apparatus for recording data onto an optical disc |
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2015
- 2015-02-10 CN CN201510068827.0A patent/CN105984474B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286587A (en) * | 1999-11-12 | 2001-03-07 | 深圳市中兴通讯股份有限公司 | Time slot synchronizer in regional search for WCDMA system |
| JP2006113002A (en) * | 2004-10-18 | 2006-04-27 | Nsk Ltd | Anomaly diagnosis system for mechanical equipment |
| CN102923164A (en) * | 2012-09-14 | 2013-02-13 | 上海交通大学 | High-speed rail health monitoring system based on ultrasonic guide wave and wireless network |
Non-Patent Citations (1)
| Title |
|---|
| 基于跳频超声信号的钢轨探伤方法研究;刘意;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20150115(第1期);第1－62页 * |
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