CN209410075U - Rail traffic rail detection system based on sound wave - Google Patents
Rail traffic rail detection system based on sound wave Download PDFInfo
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- CN209410075U CN209410075U CN201822255676.1U CN201822255676U CN209410075U CN 209410075 U CN209410075 U CN 209410075U CN 201822255676 U CN201822255676 U CN 201822255676U CN 209410075 U CN209410075 U CN 209410075U
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Abstract
The utility model belongs to rail traffic track detecting field, it is a kind of rail traffic rail detection system based on sound wave, system includes jump bit, sound pick-up, signal amplifier, microprocessor, jump bit is metal hammer, tapping track using jump bit makes a sound track, sound pick-up receives the sound that track issues, signal amplifier is by output after the received voice signal amplification of sound pick-up to microprocessor, microprocessor turns the frequency spectrum data that frequency domain algorithm calculates received signal by time domain to the signal received, calculated frequency spectrum data is compared with the wheel hub frequency spectrum that system saves, to realize to track crackle, the detection of loosened screw.
Description
Technical field
The present invention relates to a kind of rail traffic rail detection system based on sound wave, splits suitable for various rail traffic tracks
The detection of line, loosened screw.
Background technique
Britain's engineer's Stefansson in 1810 has invented train, and there are first railway, process more than 100 in China in 1876
The development in year, China railway total kilometrage reach nearly 130,000 kilometers.With the quickening of Urbanization Process In China, it is current to the north of
Urban track traffic is being greatly developed in city headed by capital, Shanghai, and rail traffic has become the important of the national economic development
Support.
Basic system of the rail traffic track as support and the operation of rail traffic vehicles, the formedness of its state are straight
The safety for being related to rail traffic vehicles operation is connect, it, gently then can shadow when crackle or loosened screw occur for rail traffic track
Rail traffic vehicles traveling comfort is rung, it is heavy then will lead to toppling for rail traffic vehicles；The day of current orbit traffic track
There are two types of normal detection methods: sound method and vibration monitoring method are debated in percussion；Percussion debates the sound method i.e. person's of inspecting the road hand and walks by hand hammer in track
On traffic track, track is tapped using hand hammer, the person of inspecting the road determines that track whether there is by listening attentively to the sound of track sending and splits
Line or loosened screw, percussion are debated sound method to the experience and quality of the routine testing heavy dependence person of inspecting the road of track, are existed very big
It is uncertain；Vibration detection method is used for track detection vehicle, the vibration of wheel when passing through respective stretch by monitoring track detection vehicle
The variation of dynamic frequency, intensity detects the crackle or loosened screw of track, and vibration monitoring method first is not used to daily track
Detection, second is that can not be detected for the loosening of crackle and screw that track initial stage occurs, third is that expensive.
According to physics principle it is known that any one metal structure has intrinsic vibration frequency and multiple
Resonance frequency, fixed frequency and resonance frequency are related with the quality of metal structure, rigidity, structure, when the matter of metal structure
After amount, rigidity, structure determination, what its fixed frequency and resonance frequency namely determined, when the structure of metal structure occurs
Variation is, such as crack occurs, loosen, and the intrinsic frequency and resonance frequency of this metal structure will change；Work as gold
When category structural body is tapped, metal structure knows from experience the audible frequency of sending people and is in sound between 10Hz~20000Hz frequency
Sound, by analyze this sound tone and tone color it may determine that metal structure there are the problem of, the tone of sound and
Tone color is exactly the frequency spectrum of sound in sound.
Rail traffic rail detection system shown in the present invention based on sound wave is after being impacted by sound pick-up reception
Rail traffic track sound, and the voice signal received is handled by microprocessor, calculates rail traffic
Track issue sound spectrum, come detect rail traffic track structure formedness.
Rail traffic rail detection system based on sound wave can be used for crackle, the screw worked itself loose of various daily rail traffic tracks
Rail traffic track detecting can be effectively reduced to worker in dynamic detection, the rail traffic vehicles hub detecting system based on sound wave
The dependence of experience and quality effectively improves rail traffic track detecting quality, hidden danger is discharged in time, to effectively improve railcar
Operation safety.
Summary of the invention
The present invention relates to a kind of rail traffic rail detection system based on sound wave.
The technical solution of the present invention is as follows: the rail traffic rail detection system based on sound wave includes jump bit, sound pick-up, letter
Number amplifier, microprocessor composition；Jump bit taps rail traffic track for it, and the vibration of track is excited to make a sound；It picks up
Sound device is used to receive the sound of track sending, and acoustic signals are converted to electric signal；Signal amplifier is for amplifying sound pick-up
Signal；Microprocessor receives the voice signal by signal amplifier amplification, and turns frequency domain algorithm to received using time domain
The voice signal changed over time is converted to the frequency spectrum data of sound, and the rail traffic track spectrum information saved with system into
Row compares the whether good result of output track.
Detailed description of the invention
Fig. 1 systematic schematic diagram.
In figure, (1) jump bit, (2) sound pick-up, (3) signal amplifier, (4) microprocessor, (5) track.
Specific embodiment
In conjunction with attached drawing, the present invention will be further described in face.
As shown in Figure 1, the rail traffic rail detection system based on sound wave includes jump bit (1), sound pick-up (2), signal
Amplifier (3), microprocessor (4)；Sound pick-up (2) is connected to the input terminal of signal amplifier (3), signal amplifier by conducting wire
(3) output end is connected to the port ADC of microprocessor (4)；By sound pick-up (2) close to track (5), jump bit (1) when detection
Shape body is hammered into shape for metal material, taps track (5) using jump bit (1), and sound pick-up (2) receives voice signal after voice signal
It is converted to electric signal and exports and give signal amplifier (3), signal amplifier (3) is exported after amplifying signal and given microprocessor (4), micro-
Processor (4) receives signal, and turns frequency domain algorithm using time domain to signal and handle signal, gets the frequency of track (5)
Spectrum information is split through being compared with the track spectrum information being stored in microprocessor (4) to judge that errant whether there is
Then information is fed back to staff by way of sound or displaying information on screen by line or loosened screw.
Above-mentioned specific embodiment is the preferred embodiment of the present invention, is not intended to restrict the invention, all to pass through analysis
Rail traffic track spectrum information detects the scheme of rail traffic track condition all within protection scope of the present invention.
Claims (1)
1. the rail traffic rail detection system based on sound wave, including it is jump bit (1), sound pick-up (2), signal amplifier (3), micro-
Processor (4)；Sound pick-up (2) is connected to the input terminal of signal amplifier (3), the output end of signal amplifier (3) by conducting wire
It is connected to the port ADC of microprocessor (4)；By sound pick-up (2) close to track (5) when detection, jump bit (1) is metal material hammer
Shape body taps track (5) using jump bit (1), and sound pick-up (2) receives and voice signal is converted to electric signal after voice signal
It exports and gives signal amplifier (3), signal amplifier (3) is exported after amplifying signal and given microprocessor (4), and microprocessor (4) connects
Collect mail number, and frequency domain algorithm turned using time domain to signal, signal is handled, get the spectrum information of track (5), through with
The track spectrum information being stored in microprocessor (4) is compared, to judge errant with the presence or absence of crackle or screw worked itself loose
It is dynamic, information is then fed back into staff by way of sound or displaying information on screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255676.1U CN209410075U (en) | 2018-12-29 | 2018-12-29 | Rail traffic rail detection system based on sound wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255676.1U CN209410075U (en) | 2018-12-29 | 2018-12-29 | Rail traffic rail detection system based on sound wave |
Publications (1)
| Publication Number | Publication Date |
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| CN209410075U true CN209410075U (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822255676.1U Active CN209410075U (en) | 2018-12-29 | 2018-12-29 | Rail traffic rail detection system based on sound wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515472A (en) * | 2018-12-29 | 2019-03-26 | 北京天高科科技有限公司 | Rail traffic rail detection system based on sound wave |
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2018
- 2018-12-29 CN CN201822255676.1U patent/CN209410075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515472A (en) * | 2018-12-29 | 2019-03-26 | 北京天高科科技有限公司 | Rail traffic rail detection system based on sound wave |
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