CN107764895A - A kind of steel rail ultrasonic flaw detecting detecting system - Google Patents
A kind of steel rail ultrasonic flaw detecting detecting system Download PDFInfo
- Publication number
- CN107764895A CN107764895A CN201610685548.3A CN201610685548A CN107764895A CN 107764895 A CN107764895 A CN 107764895A CN 201610685548 A CN201610685548 A CN 201610685548A CN 107764895 A CN107764895 A CN 107764895A
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- China
- Prior art keywords
- module
- processing unit
- central processing
- signal
- acquisition modules
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
Abstract
The present invention relates to ultrasonic examination technical field, more particularly to a kind of steel rail ultrasonic flaw detecting detecting system, including central processing unit, transmitter module, probe, receive conditioning module, AD acquisition modules, alarm module, usb communication module, PC and power module, transmitter module is connected to pulse excitation probe with central processing unit and produces ultrasonic wave, receive the echo-signal that conditioning module is used for receiving transducer, and the echo-signal is amplified, AD acquisition modules are transferred to after filtering process, AD acquisition modules are transferred to central processing unit after carrying out analog-to-digital conversion to signal, alarm module is connected to send alarm with central processing unit, central processing unit is connected by usb communication module with PC, power module provides power supply for system.The system is simple in construction, and flaw detection is accurate, realizes the purpose that ultrasonic signal is produced, receives and handled, while can be made a response rapidly by alarm module, improves operating efficiency.
Description
Technical field
The present invention relates to ultrasonic examination technical field, and in particular to a kind of steel rail ultrasonic flaw detecting detecting system.
Background technology
With China's expanding economy, public transport rapid development, high ferro and motor-car network are progressively molded, and railway has turned into
The main means of transport of China's resident trip.Although main track section has largely been replaced by gapless rail, train load is not
Disconnected increasing, the growth of service time and constantly speed-raising cause rail working environment further severe.In-service rail is by strong axial direction
Power, shearing force and residual stress long term, the plastic deformation easily caused and abrasion, easily cause rail defects and failures and defect.
Because ultrasonic listening possesses the features such as high sensitivity, directive property are good, penetration power is strong, harmless, at present in world wide
Interior rail Non-Destructive Testing is all based on ultrasonic examination technology.Ultrasonic examination detection is periodically carried out to in-service rail, in time hair
Existing defect and hurt are simultaneously changed to the rail more than hurt standard, can reach the purpose of safe driving.Ultrasonic listening is former
Reason essentially produces ultrasonic wave by popping one's head in, and echo is reflected to form in workpiece end face or defect interface, so as to enter to workpiece
Row flaw detection.But existing steel rail ultrasonic flaw detecting detecting system is often complicated, cost is high.
The content of the invention
It is an object of the invention to provide a kind of simple in construction, sensitive steel rail ultrasonic flaw detecting detecting system.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of steel rail ultrasonic flaw detecting detecting system, bag
Include central processing unit, transmitter module, probe, reception conditioning module, AD acquisition modules, alarm module, usb communication module, PC
And power module, the transmitter module are connected to pulse excitation probe with central processing unit and produce ultrasonic wave, described receive is adjusted
The echo-signal that module is used for receiving transducer is managed, and AD acquisition modules, institute will be transferred to after echo-signal amplification, filtering process
State after AD acquisition modules carry out analog-to-digital conversion to signal and be transferred to central processing unit, the alarm module is connected with central processing unit
For sending alarm, the central processing unit is connected by usb communication module with PC, and the power module provides electricity for system
Source.
A kind of steel rail ultrasonic flaw detecting detecting system as described above, further illustrate to be the reception conditioning module bag
Include the level magnification module being sequentially connected, high-pass filtering module, low-pass filtering module and two level amplification module, the two level amplification
The output end of module is connected with the input of AD acquisition modules.
A kind of steel rail ultrasonic flaw detecting detecting system as described above, further illustrate to be that the central processing unit uses
The minimum system of C8051F340 microprocessors and its peripheral circuit composition.
A kind of steel rail ultrasonic flaw detecting detecting system as described above, further illustrate to be that the power module includes electricity
Source and voltage transformation module, the voltage transformation module are used for the voltage that supply voltage is converted into some different numerical value.
The beneficial effects of the invention are as follows：The system is simple in construction, and flaw detection is accurate, realize ultrasonic signal produce, receive and
The purpose of processing, while can be made a response rapidly by alarm module, improve operating efficiency.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is transmitter module embodiment circuit diagram.
Fig. 3 is reception conditioning module structural representation.
Fig. 4 is alarm module embodiment circuit diagram.
Fig. 5 is voltage transformation module structural representation.
Embodiment
Embodiment of the present invention is further elaborated below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of steel rail ultrasonic flaw detecting detecting system provided by the invention, including central processing unit, transmitting
Module, probe, receive conditioning module, AD acquisition modules, alarm module, usb communication module, PC and power module.
The transmitter module is connected to pulse excitation probe with central processing unit and produces ultrasonic wave, preferably, described
The minimum system that central processing unit is formed using C8051F340 microprocessors and its peripheral circuit.It is ultrasonic caused by the probe
Ripple is propagated within the workpiece, so as to detect flaw detection.The probe is prior art, is not specifically described here.Such as Fig. 2 institutes
To show, be a circuit diagram of transmitter module, operation principle is the pin connection of input and central processing unit on the left of the circuit,
Optocoupler negative electrode level is controlled after 74F04 is reverse, optocoupler plays a part of isolating light current and forceful electric power and control triggering.Work as center
When the output of processor pin is low level, optocoupler disconnects, and the high voltage direct current obtained after Transformer Rectifier is by resistance R4 to electricity
Hold C1 chargings, when the output of central processing unit pin is high level, optocoupler, IGCT BT151 are turned on, and electric capacity C1 is fast through resistance R5
Speed electric discharge, it then will motivate a high pressure at probe S1 both ends and bear spike.It can be realized pair by changing resistance R5 resistances
The regulation of transmission power and damped vibration.Increase resistance can improve transmission power, and pulsewidth is bigger；Similarly, reducing resistance will reduce
Transmission power, pulsewidth are narrower.It can be demarcated and launched according to the actual conditions (roughness, thickness, probe type and parameter etc.) of workpiece
Intensity, emissive porwer can be determined by changing resistance R5 resistance.Other transmitter modules can also similarly be used.
The echo-signal for receiving conditioning module and being used for receiving transducer, and by after echo-signal amplification, filtering process
AD acquisition modules are transferred to, when the ultrasonic wave of transmitting is being transferred to workpiece, defect interface, it may occur that reflection or refraction are formed back
Ripple, so that the piezoelectric chip on probe produces concussion, so as to cause detection circuit on probe to change, echo frequency is believed
Number be converted into voltage or current signal, by the voltage or current signal transfer to receiving conditioning module.Preferably, such as Fig. 3
It is shown, the level magnification module, high-pass filtering module, low-pass filtering module and two for receiving conditioning module and including being sequentially connected
Level amplification module, the output end of the two level amplification module are connected with the input of AD acquisition modules.Because rail thickness is larger,
The strong echo-signal for causing to receive of material decay is generally millivolt level, so first being put using level magnification module to signal
Big processing, realize that signal amplifies by level magnification module, to expand signal input range, improve the versatility of system, institute
It is prior art to state level magnification module, is not set forth in detail here.Enter by high-pass filtering module and low-pass filtering module
Row filtering noise reduction process, can suppress to disturb, improve signal accuracy, put after being filtered through two level amplification module
Greatly, the gain of whole system can be improved by two level amplification module, meets that A/D modular converters input needs, is so as to improve
System sensitivity.
The AD acquisition modules are transferred to central processing unit after carrying out analog-to-digital conversion to signal, and the A/D acquisition modules can
To select AD9057 converters, the analog-digital converter of other models can also be selected, is not limited here.
The alarm module is connected to send alarm with central processing unit, i.e., when defect occurs in Rail Surface, alarm
Action sends alarm.As shown in figure 4, it is an embodiment circuit diagram of alarm module, when the P0.6 pins of central processing unit export
For low level, when P0.7 outputs are high level, light emitting diode is lighted, while loudspeaker action sends alarm.That is P0.6 pins
The break-make of light emitting diode is controlled, P0.7 pins are controlled by controlling the break-make of triode to loudspeaker.It can also adopt
With the circuit diagram of other structures.
The central processing unit is connected by usb communication module with PC, realizes the number between central processing unit and PC
According to transmission.The power module provides power supply for system.The power module includes power supply and voltage transformation module, the voltage
Modular converter is used for the voltage that supply voltage is converted into some different numerical value, ensures the normal use of each equipment.It is for example, electric
Modular converter is pressed to include HT7533 chips and peripheral circuit composition, so that be 3.3V burning voltage by 12V photovoltaic conversions, so as to
Ensure the equipment normal use that operating voltage is 3.3V, physical circuit figure is as shown in figure 5, the voltage transformation module also includes certainly
Other conversion chips, are not illustrated one by one here.
The present invention operation principle be：PC is communicated by usb communication module with central processing unit, is sent control and is referred to
Make to central processing unit, after central processing unit receives instruction, triggering transmitter module produces high voltage negative pulse, pulse excitation probe production
Raw ultrasonic wave is propagated in rail, and echo-signal will be produced when ultrasonic wave runs into defect or contoured surface, and echo-signal is passed through
After receiving the processing such as conditioning module amplification, filtering, after the conversion of AD acquisition modules, central processing unit, central processing unit are transferred to
PC is being uploaded to by usb communication module, is realizing the purpose that ultrasonic signal is produced, receives and handled.The letter of the system structure
Single, flaw detection is accurate, realizes the purpose of ultrasonic signal generation, reception and processing, while can be made rapidly instead by alarm module
Should, improve operating efficiency.
The present invention is not limited to examples detailed above, in claims of the present invention limited range, art technology
The various deformations or amendments that personnel can make without creative work are protected by this patent.
Claims (4)
- A kind of 1. steel rail ultrasonic flaw detecting detecting system, it is characterised in that：Including central processing unit, transmitter module, probe, reception Conditioning module, AD acquisition modules, alarm module, usb communication module, PC and power module, the transmitter module and centre Reason device is connected to pulse excitation probe and produces ultrasonic wave, and the reception conditioning module is used for the echo-signal of receiving transducer, and AD acquisition modules will be transferred to after echo-signal amplification, filtering process, the AD acquisition modules carry out analog-to-digital conversion to signal After be transferred to central processing unit, the alarm module is connected to send alarm with central processing unit, and the central processing unit leads to Cross usb communication module to be connected with PC, the power module provides power supply for system.
- A kind of 2. steel rail ultrasonic flaw detecting detecting system according to claim 1, it is characterised in that：It is described to receive conditioning mould Block includes level magnification module, high-pass filtering module, low-pass filtering module and the two level amplification module being sequentially connected, the two level The output end of amplification module is connected with the input of AD acquisition modules.
- A kind of 3. steel rail ultrasonic flaw detecting detecting system according to claim 1, it is characterised in that：The central processing unit The minimum system formed using C8051F340 microprocessors and its peripheral circuit.
- A kind of 4. steel rail ultrasonic flaw detecting detecting system according to claim 1, it is characterised in that：The power module bag Power supply and voltage transformation module are included, the voltage transformation module is used for the voltage that supply voltage is converted into some different numerical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685548.3A CN107764895A (en) | 2016-08-18 | 2016-08-18 | A kind of steel rail ultrasonic flaw detecting detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685548.3A CN107764895A (en) | 2016-08-18 | 2016-08-18 | A kind of steel rail ultrasonic flaw detecting detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107764895A true CN107764895A (en) | 2018-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610685548.3A Pending CN107764895A (en) | 2016-08-18 | 2016-08-18 | A kind of steel rail ultrasonic flaw detecting detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709217A (en) * | 2019-02-22 | 2019-05-03 | 宝鸡知为机电技术有限公司 | A kind of double rail type ultrasonic fault detection system |
-
2016
- 2016-08-18 CN CN201610685548.3A patent/CN107764895A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709217A (en) * | 2019-02-22 | 2019-05-03 | 宝鸡知为机电技术有限公司 | A kind of double rail type ultrasonic fault detection system |
| CN109709217B (en) * | 2019-02-22 | 2023-10-24 | 宝鸡知为机电技术有限公司 | Double-rail ultrasonic flaw detection system |
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Application publication date: 20180306 |