CN106248902B - Flaw detector for steel rail device - Google Patents
Flaw detector for steel rail device Download PDFInfo
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- CN106248902B CN106248902B CN201610766912.9A CN201610766912A CN106248902B CN 106248902 B CN106248902 B CN 106248902B CN 201610766912 A CN201610766912 A CN 201610766912A CN 106248902 B CN106248902 B CN 106248902B
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- module
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- flaw detector
- steel rail
- circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
Abstract
The invention discloses a kind of flaw detector for steel rail device, including signal generation and attenuation module, external trigger signal processing module, 20dB fixed attenuations module, power module, keyboard, knob, micro controller module, main controller module and LCD MODULE.The present invention not only solves the problems such as flaw detector for steel rail human-machine operation in the prior art is unfriendly, standard attenuator attenuation accuracy of measurement and stability be not high, output waveform is unstable, output waveform time interval and precision and the stability in period be not high, and meets newest《Department of The Ministry of Railway of the People's Republic of China, MOR measurement verification regulations 2013》The new technology requirement of middle requirement.
Description
Technical field
The invention belongs to rail flaw detector calibrating and collimation technique fields, and in particular to a kind of flaw detector for steel rail dress
The design put.
Background technology
Flaw detector for steel rail is used to be examined and determine to coming of new, using the rail flaw detector neutralized after repairing and school
It is accurate.The existing flaw detector for steel rail in China, which mainly meets to formulate for 2004, at present issues execution《Chinese people's republicanism
Department of the Ministry of Railways of state measurement verification regulations 2004》Specified in Specifications requirement, these calibrating instruments have been unsatisfactory for
2013 newest to issue execution《Department of The Ministry of Railway of the People's Republic of China, MOR measurement verification regulations 2013》It is required that.
The chief component of existing flaw detector for steel rail is at present：Pulse-modulated signal generator, standard decline
Subtract device.Standard attenuator is designed to an individual components, is connected in case backboard with cable with pulse signal generator.Connection
When, it represents to export after decaying to the signal of signal generator；When being not connected to, represent without the directly output that decays.Standard
Attenuator has carried out special design, with resolved impedance spectroscopy matching problem.As shown in Figure 1, it is touched what tested rail flaw detector exported
Signalling is connected to the outer triggering signal input terminal of flaw detector for steel rail, and the signal of pulse-modulated signal generator is directly defeated
The signal input part for going out or tested rail flaw detector being output to after standard attenuator is decayed is examined and determine.
Existing flaw detector for steel rail is primarily present following shortcoming：
(1) using analog electronics technique, human-machine operation is unfriendly；
(2) attenuation of standard attenuator controls adjustable resistance resistance value to realize that precision and stability be not high by knob；
(3) output waveform is unstable, and the time interval of output waveform and the precision in period and stability be not high；
(4) due to existing flaw detector for steel rail service life for a long time, component performance deteriorates, and output waveform is abnormal
Shape, and replaced without new product；
(5) some new technologies require can not achieve, and such as under trigger signal effect, can only export frequency of oscillation as 2MHz
Or the impulse wave of 5MHz, and the monocycle sine wave or continuous sine wave of 1Hz-15MHz can not be exported；
(6) attenuation range of standard attenuator is 0~61dB, and attenuation maximum cannot reach the requirement of 80dB.
Invention content
The purpose of the present invention is to solve above-mentioned existing flaw detector for steel rail there are the problem of, it is proposed that Yi Zhonggang
Rail calibration of flaw detector instrument device.
The technical scheme is that：A kind of flaw detector for steel rail device occurs and attenuation module, outer including signal
Trigger signal processing module, 20dB fixed attenuations module, power module, keyboard, knob, micro controller module, master controller mould
Block and LCD MODULE；The input terminal of external trigger signal processing module is connect with outer triggering signal, output terminal and signal
Occur and the connection of the external trigger signal input part of attenuation module, the input terminal of 20dB fixed attenuation modules occur and decay with signal
Module waveform output terminal connection, micro controller module respectively with 20dB fixed attenuations module, keyboard, knob and master controller
Module connects, and main controller module also occurs respectively with signal and attenuation module, LCD MODULE are connect.
Preferably, external trigger signal processing module include amplitude limiter circuit, positive pulse processing circuit, negative pulse processing circuit with
And logic or circuit, the input terminal of amplitude limiter circuit are the input terminal of external trigger signal processing module, output terminal respectively with positive pulse
The output terminal of the input terminal connection of processing circuit, negative pulse processing circuit, logic or circuit is external trigger signal processing module
Output terminal, output terminal of the input terminal respectively with positive pulse processing circuit, negative pulse processing circuit are connect.
Preferably, positive pulse processing circuit is made of shaping circuit.
Preferably, negative pulse processing circuit is made of see-saw circuit and shaping circuit.
Preferably, signal occurs and attenuation module is using Tyke arbitrarily signal generating device AFG2021-SC, passes through main control
Device programs it generation for realizing signal and the attenuation of 0~60dB.
Preferably, 20dB fixed attenuations module includes 20dB fixed attenuators and two single-pole double-throw switch (SPDT)s, by micro-
The switch control signal of controller output controls the throwing to selecting whether input signal passes through with this of two single-pole double-throw switch (SPDT)s
20dB fixed attenuators.
Preferably, main controller module is realized using industrial control mainboard.
Preferably, micro controller module uses 89C52 chip microcontrollers.
Preferably, LCD MODULE uses LCD display.
The beneficial effects of the invention are as follows：
(1) using digital technology, by keyboard or knob-operated, with the setting of LCD display display function parameter, overcome
The original disagreeableness shortcoming of human-machine operation.
(2) pass through the 20dB fixed attenuators of programming Control Tyke arbitrarily signal generating device AFG2021-SC and high stable reality
Now it is up to the attenuation of 80dB, overcomes original standard attenuator for the resistance value of adjustable resistor being controlled to realize by knob
Precision and the shortcomings that not high stability.
(3) value of output waveform and time interval pass through programming Control Tyke arbitrarily signal generating device AFG2021-SC realities
It is existing, overcome the original resistance value by knob control adjustable resistor realize the numerical value of waveform, time interval, the precision in period and
The shortcomings that stability is not high.
(4) value of output waveform is realized by programming Control Tyke arbitrarily signal generating device AFG2021-SC, waveform stabilization,
It is not in deformity.
(5) some new technology requirements are realized, other than generating impulse wave, the single-revolution of 1Hz-15MHz can also be generated
The continuous sine wave of phase sine wave or 1Hz-12.5MHz.
Description of the drawings
Fig. 1 is existing flaw detector for steel rail system block diagram.
Fig. 2 is a kind of flaw detector for steel rail apparatus structure block diagram provided by the invention.
Fig. 3 is amplitude limit and reverse amplification circuit schematic diagram.
Fig. 4 is shaping and logic or circuit diagram.
Fig. 5 is 89C52 single chip circuit schematic diagrames.
Fig. 6 is that the high frequency list sinusoidal wave data of the embodiment of the present invention builds schematic diagram.
Specific embodiment
The embodiment of the present invention is further described below in conjunction with the accompanying drawings.
The present invention provides a kind of flaw detector for steel rail device, as shown in Fig. 2, including signal generation and decay mode
Block, external trigger signal processing module, 20dB fixed attenuations module, power module, keyboard, knob, micro controller module, main control
Device module and LCD MODULE；The input terminal of external trigger signal processing module is connect with outer triggering signal, output terminal with
Signal occurs and the connection of the external trigger signal input part of attenuation module, the input terminals of 20dB fixed attenuation modules occur with signal and
Attenuation module waveform output terminal connection, micro controller module respectively with 20dB fixed attenuations module, keyboard, knob and master control
Device module connection processed, main controller module also occurs respectively with signal and attenuation module, LCD MODULE are connect.
Wherein, in order to connect use with original rail flaw detector, outer triggering signal should be suitble to original simulation inspection
Determine instrument, to be also suitble to flaw detector for steel rail device provided by the invention, the outer triggering signal amplitude of original calibrating instrument can
100V can be more than, thereby increases and it is possible to be negative pulse, it is also possible to be positive pulse, it is therefore desirable to an external trigger signal processing module.
External trigger signal processing module includes amplitude limiter circuit, positive pulse processing circuit, negative pulse processing circuit and logic
Or circuit, the input terminal of amplitude limiter circuit are the input terminal of external trigger signal processing module, output terminal is electric with positive pulse processing respectively
The output terminal of road, the input terminal connection of negative pulse processing circuit, logic or circuit is the output terminal of external trigger signal processing module,
Output terminal of the input terminal respectively with positive pulse processing circuit, negative pulse processing circuit is connect.Positive pulse processing circuit is by shaping electricity
Road is formed；Negative pulse processing circuit is made of see-saw circuit and shaping circuit.
The module becomes arbitrary external trigger signal the TTL trigger signals that signal occurs and attenuation module can receive.It is first
First the amplitude of outer triggering signal is limited in by amplitude limiter circuit within ± 5V, for positive pulse trigger signal, direct shaping
After be sent to or door；For negative pulse trigger signal, through reversely amplifying, being sent to after shaping or door.Or door output is used as signal
And the outer triggering signal input (Trigger input) of attenuation module.
Amplitude limit and reverse amplification circuit as shown in figure 3, shaping and logic or circuit as shown in figure 4, these circuits it is specific
Connection mode and principle are the common knowledge of this field, and details are not described herein.
In the embodiment of the present invention, signal occurs and attenuation module uses matured product Tyke of the prior art arbitrary signal
Generator AFG2021-SC programs it by master controller the generation for realizing signal and the attenuation of 0~60dB, so as in module
Signal generator and attenuator needed for interior generation.
20dB fixed attenuations module includes 20dB fixed attenuators and two single-pole double-throw switch (SPDT)s, defeated by microcontroller
The switch control signal that goes out controls the throwing to selecting whether input signal is declined by 20dB fixations with this of two single-pole double-throw switch (SPDT)s
Subtract device.As shown in Fig. 2, in embodiments of the present invention, two single-pole double-throw switch (SPDT)s are respectively the first single-pole double-throw switch (SPDT) and second
Single-pole double-throw switch (SPDT), when the moved end of two single-pole double-throw switch (SPDT)s is respectively thrown to the non-moving end being connect with 20dB fixed attenuators
When, you can impulse wave or sine wave signal to signal generation and attenuation module output carry out the fixed attenuation of 20dB；When two
When the moved end of single-pole double-throw switch (SPDT) is respectively thrown to the non-moving end being connect with conducting wire, then signal occur and attenuation module output arteries and veins
Wave or sine wave signal are rushed without attenuation, directly as output signal (Output).
In this way since signal occurs and the output signal of attenuation module, i.e. arbitrarily signal generating device AFG2021-SC
(Output) amplitude range is 10mV-10V, programs the attenuation that can realize maximum 60dB to it by master controller, then with
20dB fixed attenuation modules are combined, so as to realize the attenuator of maximum 80dB.
In addition, signal occurs and attenuation module further includes an internal trigger signal output end, internal trigger signal directly by
The triggering output (Trigger output) of arbitrarily signal generating device AFG2021-SC generates.
In the embodiment of the present invention, main controller module is realized using industrial control mainboard.By keyboard operation or knob-operated,
Select the relevant parameters such as type of waveform and its amplitude, delay, frequency, according to these parameters, signal is occurred by master controller and
Attenuation module programs, you can obtains corresponding waveform output.
In the embodiment of the present invention, micro controller module uses 89C52 chip microcontrollers, as shown in figure 5, its specific connection side
Formula and principle are the common knowledge of this field, and details are not described herein.
In the embodiment of the present invention, LCD MODULE uses LCD display.Liquid crystal display mode is programmed in by master controller
The display interface of relevant information is realized in block, carries out the operations such as the select and set of relevant parameter on the surface.
The present invention is occurred using arbitrarily signal generating device AFG2021-SC as signal and attenuation module, not only overcomes original
The resistance value by knob control adjustable resistor come realize the numerical value of waveform, time interval, the precision in period and stability it is not high,
The shortcomings of waveform is unstable, output waveform is lopsided, and some new technology requirements are realized, in addition to impulse wave can be generated
Outside, the monocycle sine wave of 1Hz-15MHz or the continuous sine wave of 1Hz-12.5MHz can also be generated.Below with a tool
To present invention structure high frequency (15MHz), the process of single sine wave signal output is described in detail body embodiment：
Since the frequency of the sine wave of Tyke arbitrarily signal generating device AFG2021-SC outputs is up to 12.5MHz, and this
In need the frequency to be up to 15MHz, realized so needing to program AFG2021-SC by master controller.It is received in calibrating instrument
After trigger signal, the sine wave of signal period is exported, the frequency of sine wave is f, and the period is T (T=1/f), fabricates a frequency
Relatively low signal, period are T ', which is made of the single sine wave and zero level signal of high frequency, as shown in Figure 6.Assuming that it touches
The delay signaled with output wave is 0, and it is B to set Wave data points in the T ' periods, according to original waveform cycle T and new wave mode week
The relationship of phase T ' determines original waveform data points A, sinusoidal wave data is then built in A point, remaining B-A point is zero
Level, so as to complete the structure of the single sine wave signal output of high frequency (15MHz).
For single sine wave signal of low frequency (1Hz-12.5MHz) or continuous sine wave signal, above-mentioned do both may be used
Method is built, can also be directly by device A FG2021-SC itself function generator generations.And pulse, dipulse, multiple-pulse wave
Wave signal equally can pass through keyboard or knob by Tyke arbitrarily signal generating device AFG2021-SC itself function generator generations
The relevant parameters such as period, duty ratio is set to realize.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill can make according to these technical inspirations disclosed by the invention various does not depart from the other each of essence of the invention
The specific deformation of kind and combination, these deform and combine still within the scope of the present invention.
Claims (8)
1. a kind of flaw detector for steel rail device, which is characterized in that at signal generation and attenuation module, external trigger signal
Manage module, 20dB fixed attenuations module, power module, keyboard, knob, micro controller module, main controller module and liquid crystal
Display module；The input terminal of the external trigger signal processing module is connect with outer triggering signal, output terminal and signal occur and
The external trigger signal input part connection of attenuation module；The input terminal of the 20dB fixed attenuations module occurs with signal and decay mode
The waveform output terminal connection of block；The micro controller module respectively with 20dB fixed attenuations module, keyboard, knob and main control
Device module connects；The main controller module also occurs respectively with signal and attenuation module, LCD MODULE are connect；It is described outer
Trigger signal processing module includes amplitude limiter circuit, positive pulse processing circuit, negative pulse processing circuit and logic or circuit；It is described
The input terminal of amplitude limiter circuit is the input terminal of external trigger signal processing module, output terminal respectively with positive pulse processing circuit, negative arteries and veins
Rush the input terminal connection of processing circuit；The output terminal of the logic or circuit is the output terminal of external trigger signal processing module, defeated
Enter output terminal of the end respectively with positive pulse processing circuit, negative pulse processing circuit to connect.
2. flaw detector for steel rail device according to claim 1, which is characterized in that the positive pulse processing circuit by
Shaping circuit is formed.
3. flaw detector for steel rail device according to claim 1, which is characterized in that the negative pulse processing circuit by
See-saw circuit and shaping circuit are formed.
4. flaw detector for steel rail device according to claim 1, which is characterized in that the signal occurs and decay mode
Block use Tyke arbitrarily signal generating device AFG2021-SC, it is programmed by master controller realize signal generation and 0~
The attenuation of 60dB.
5. flaw detector for steel rail device according to claim 1, which is characterized in that the 20dB fixed attenuations module
Including 20dB fixed attenuators and two single-pole double-throw switch (SPDT)s, two are controlled by the switch control signal that microcontroller exports
Single-pole double-throw switch (SPDT) is thrown to whether selecting input signal by 20dB fixed attenuators with this.
6. flaw detector for steel rail device according to claim 1, which is characterized in that the main controller module uses
Industrial control mainboard is realized.
7. flaw detector for steel rail device according to claim 1, which is characterized in that the micro controller module uses
89C52 chip microcontrollers.
8. flaw detector for steel rail device according to claim 1, which is characterized in that the LCD MODULE uses
LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766912.9A CN106248902B (en) | 2016-08-30 | 2016-08-30 | Flaw detector for steel rail device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766912.9A CN106248902B (en) | 2016-08-30 | 2016-08-30 | Flaw detector for steel rail device |
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| Publication Number | Publication Date |
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| CN106248902A CN106248902A (en) | 2016-12-21 |
| CN106248902B true CN106248902B (en) | 2018-06-15 |
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| CN201610766912.9A Active CN106248902B (en) | 2016-08-30 | 2016-08-30 | Flaw detector for steel rail device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561162A (en) * | 2017-08-23 | 2018-01-09 | 西北工业大学 | A kind of reflectoscope automatic verification system |
| CN109991316A (en) * | 2019-04-30 | 2019-07-09 | 上海材料研究所 | A kind of ultrasonic instrument calibrating installation |
| CN112986526B (en) * | 2021-02-09 | 2024-01-09 | 鞍钢股份有限公司 | Automatic steel billet surface defect inspection device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470304A (en) * | 1982-06-01 | 1984-09-11 | Bethlehem Steel Corp. | Ultrasonic inspection system |
| CN2279606Y (en) * | 1996-04-26 | 1998-04-22 | 柳州铁路局计量所 | Flaw detector for steel rail |
| CN103163223A (en) * | 2011-12-14 | 2013-06-19 | 西安扩力机电科技有限公司 | Self-verification system for periodic verification of ultrasonic fault detector |
| CN206505071U (en) * | 2016-08-30 | 2017-09-19 | 成都多极子科技有限公司 | Flaw detector for steel rail device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646456A (en) * | 1979-09-25 | 1981-04-27 | Kawasaki Steel Corp | Method and device for sensitivity compensation of eddy flaw detection |
-
2016
- 2016-08-30 CN CN201610766912.9A patent/CN106248902B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470304A (en) * | 1982-06-01 | 1984-09-11 | Bethlehem Steel Corp. | Ultrasonic inspection system |
| CN2279606Y (en) * | 1996-04-26 | 1998-04-22 | 柳州铁路局计量所 | Flaw detector for steel rail |
| CN103163223A (en) * | 2011-12-14 | 2013-06-19 | 西安扩力机电科技有限公司 | Self-verification system for periodic verification of ultrasonic fault detector |
| CN206505071U (en) * | 2016-08-30 | 2017-09-19 | 成都多极子科技有限公司 | Flaw detector for steel rail device |
Non-Patent Citations (1)
| Title |
|---|
| 数字式超声波钢轨探伤仪检定方案分析;包磊等;《铁道技术监督》;20140930;第42卷(第9期);第23-24页1检定系统总体方案 * |
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| CN106248902A (en) | 2016-12-21 |
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Effective date of registration: 20180510 Address after: 610051 Chengdu, Sichuan, Chenghua District first ring road east section 159 Electronic Information Industry Building 1, sixth floor, 4 room. Applicant after: Wan Yan railway equipment (Chengdu) limited liability company Address before: 611731 7 building, 1 80 South three ring road, Chengdu high tech Zone, Sichuan Applicant before: CHENGDU MULTIPOLE TECHNOLOGY CO., LTD. |
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