CN103528517A - Optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system - Google Patents
Optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system Download PDFInfo
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- CN103528517A CN103528517A CN201310486108.1A CN201310486108A CN103528517A CN 103528517 A CN103528517 A CN 103528517A CN 201310486108 A CN201310486108 A CN 201310486108A CN 103528517 A CN103528517 A CN 103528517A
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Abstract
An optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system disclosed by the invention relates to the sectional carbon pantograph slider abrasion detection technology for railway locomotives, subway cars, electric multiple units or the like, and belongs to the field of safe train running monitoring. An optical fiber abrasion sensor is attached on the outside of a carbon pantograph slider or preburied in the carbon pantograph slider, and an abrasion area is divided into N abrasion sections by utilizing the light transmittance and laying positions of optical fibers; when the carbon pantograph slider is abraded, the optical fibers of the corresponding abrasion sections are broken, as a result, the light transmittance is damaged to disappear, and by statistically analyzing the breakage of the optical fibers in the different abrasion sections, the abrasion value and abrasion sections of the detected object are given. The optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system can dynamically detect the abrasion of the carbon pantograph slider throughout on line and in real time, and can locate and quantitatively detect the abrasion sections. The optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system has the advantages of high precision, high anti-interference capability, long service life and low cost, and can provide a basis for the automatic lifting and dropping of pantographs and the replacement of carbon sliders and support the analysis of pantograph-overhead contact system relation.
Description
Technical field
The present invention relates to a kind of abrasion online measuring technique of Optical Fiber Transmission principle, relate in particular to the pantograph carbon slide abrasion detection technique for railway locomotive or railcar or motor train unit etc., belong to the train safe monitoring field of travelling.
Background technology
Fibre Optical Sensor is at present fast-developing New Sensing Technology, the advantage such as have good insulating, anti-electromagnetic interference (EMI), environmental corrosion resisting, highly sensitive, transmission range is long, structure is dexterous; Electric railway motorcycle pantograph carbon slide plate abrasion state is the important detection position that guarantees safety of railway operation, and the real-time online detection of its wearing valve is significant to guarantee railway operation safety for timely lifting bow, repair and replacement in time.Pantograph carbon slide is that train obtains the diversion component of electric power from power transmission network, the pantograph of railway locomotive or railcar or motor train unit and the good contact of power transmission network are to determine that can train obtain the key problem of enough traction power safe and reliable operation, and its monitoring requires measuring system to have high pressure resistant, anti-electromagnetic interference (EMI), lightweight, the feature that adapts to field environment.
The contrast of existing detection method:
1, traditional detection mode
Pantograph carbon slide abrasion detect the methods that adopt traditional manual detection more, the train section of entering, stop, fall bow, power-off, staff climbs up roof, with the wearing and tearing of special-purpose gage measuring pantograph, observation has or not abnormal wear etc.The method efficiency is low, measuring accuracy is poor and detect according to schedule the abrasion state of small part train pantograph every day, and the paroxysmal abnormal wear of pantograph is had no idea to measure completely, has very large potential safety hazard.
2, intelligent detection mode
The pantograph pan wearing and tearing self-operated measuring unit of developing both at home and abroad at present.All adopt the ultrasonic sensor be fixed on overhead to send ultrasound wave, by air, transmit and deliver on the pantograph carbon slide that low speed passes through, then ultrasonic reflections turns back on sensor, then according to hyperacoustic transmission time and velocity of wave at that time, obtain afterwards as calculated slide plate thickness, detect the concavo-convex and groove of sled surface; Or the laser measurement system being fixed on overhead sends laser scanning light beam, the pantograph carbon slide that low speed is passed through scans or takes a picture, and then by image, is processed and can self-verifying be gone out that slide plate transfinites and the abnormal occurrence such as stepped mill, breach, warpage; Or being fixed on camera, the camera system on overhead, the pantograph carbon slide that low speed is passed through is taken a picture, is made a video recording, and then by image, is processed and can self-verifying be gone out that slide plate transfinites and the abnormal occurrence such as stepped mill, breach, warpage.It is larger that intelligent detection mode is subject to weather condition impact, the in the situation that, atmospheric pollution not good at air regime being serious, cannot effectively carry out ultrasound wave or the videographic measurment of taking pictures, simultaneously because measurement mechanism is arranged on fixing overhead above, cannot carry out in real time train pantograph slide plate abrasion situation, whole process, dynamic monitoring.
Summary of the invention
Technical matters solved by the invention is to utilize Optical Fiber Transmission principle to realize the online real-time omnidistance detection of dynamic of pantograph carbon slide abrasion of railway locomotive or railcar or motor train unit etc., and can realize, detection and localization quantitative to abrasion region.Precision of the present invention is high, antijamming capability is strong, the life-span is long, cost is low, can be automatic lifting bow and the replacing of carbon slide plate provides foundation, supports the analysis of pantograph contact line relation simultaneously.
The object of the invention is to be achieved through the following technical solutions.
Optical fiber type pantograph carbon slide of the present invention wears away online subregion real-time detecting system, in pantograph carbon slide outside, paste optical fiber type abrasion sensor, utilize the logical optical property of optical fiber and the installation position of optical fiber that abrasion band is divided into N abrasion region, when abrasion produce, cause the optical fiber breakdown in corresponding abrasion region, the logical impaired disappearance of optical property, by the statistical study to difference abrasion region inner fiber break-make situation, provides wearing valve and the abrasion region of measured body.
Optical fiber type pantograph carbon slide of the present invention wears away online subregion real-time detecting system and comprises pantograph carbon slide, optical fiber type abrasion sensor, circulator, light source, photoelectrical coupler, signal processing unit, M-1 optical fiber group, M light group, M+1 optical fiber group, light echo body.
Optical fiber type abrasion sensor sticks on pantograph carbon slide outside or is embedded in pantograph carbon slide inside.It is as follows that optical fiber type abrasion sensor is laid mode, the intersection point of the pantograph carbon slide of usining abrasion detection threshold line and pantograph carbon slide left border line is as true origin, pantograph carbon slide abrasion detection threshold line is as X-axis, pantograph carbon slide left border line is as Y-axis, set up coordinate (detection threshold line set can according to carbon slide plate kind, the use occasion of carbon slide plate is different and adjust).According to above-mentioned coordinate and pantograph carbon slide abrasion position positioning accuracy request, abrasion band is divided into N abrasion region, the X-axis coordinate of N abrasion region left border is respectively X
1, X
2, X
3x
n, for example, the corresponding scope in N abrasion region is X
nto X
n+1.Take each abrasion region left border is benchmark laying optical fiber, and N abrasion district corresponding N optical fiber group, comprises P root optical fiber in each optical fiber group.(M ∈ (1,2,3 to require M ... N)) (Q ∈ (1,2,3 for optical fiber group Q ... P)) optical fiber is laid in M-1 optical fiber group Q optical fiber below, and each optical fiber group internal optical fiber interval all equates.
Light source sends light beam, light beam enters optical fiber type abrasion sensor by circulator, light beam is reflected into circulator at the other end of optical fiber type abrasion sensor by light echo body, by circulator, enter photoelectrical coupler and produce corresponding electric signal, when pantograph wears up to M abrasion region, (M ∈ (1,2,3 ... N)) during Q position, in optical fiber type abrasion sensor in corresponding M optical fiber group Q (Q ∈ (1,2,3 ... P)) optical fiber rupture (in optical fiber type abrasion sensor in corresponding M optical fiber group Q (Q ∈ (1,2,3 ... P)) optical fiber is (X
m, Q) optical fiber), corresponding unglazed the passing through of light path, is attached thereto the photoelectrical coupler output signal connecing and changes, and by pantograph signal processing unit, records change amount signal, obtains abrasion position and the abrasion value of pantograph carbon slide [1].
Optical fiber abrasion sensor comprises optical fiber radical, fibre diameter and each optical fiber and pastes spacing according to accuracy of detection requirement and set.Choice of the substrates compound substance, the macromolecule flexible material of optical fiber type abrasion sensor.Fibre diameter in high-temperature resistant optical fiber band and each optical fiber are pasted the precision that spacing determines optical fiber type pantograph carbon slide abrasion Real-time and On-line, and it is higher that high-temperature resistant optical fiber diameter is thinner, each optical fiber is pasted the less measuring accuracy of spacing.
Optical fiber abrasion sensor can apply to the different occasions such as high ferro, motor-car, subway, and its concrete size also can be used the size of carbon slide plate and set according to different occasions.
Optical fiber type abrasion sensor is containing electromagnetic element or other conductive materials, therefore can high pressure resistant, anti-strong electromagnetic; Optical fiber type abrasion sensor is that silicon material forms, and environmental corrosion resisting is convenient to online measurement in real time.
Light echo body grinds to form plane for optical fiber type is worn away to one end of optical fiber in sensor, plays reflected light effect.
Light source is selected infrared band LED or visible light wave range LED.
Electric signal carries out demodulation process by the signal processing unit being connected with photoelectrical coupler, obtains abrasion value and the abrasion region of pantograph carbon slide.
Can lay quantity by paste optical fiber type abrasion sensor increase pantograph carbon slide abrasion region optical fiber in pantograph carbon slide eroded area both sides, this laying mode can make pantograph carbon slide abrasion region optical fiber laying quantity double, and then improves measuring accuracy.
Beneficial effect:
1, the present invention, by optical fiber subregion in optical fiber type abrasion sensor is laid, can monitor pantograph carbon slide wearing valve by subregion, grasps carbon slide plate wear information more comprehensively;
2, the present invention is installed on pantograph carbon slide body, can move with testee, in real time the virtual condition of testee is detected.
3, scene of the present invention is adaptable: Fibre Optical Sensor good insulating can high pressure resistant, anti-strong electromagnetic, environmental corrosion resisting, is convenient to measure in real time online;
4, high precision of the present invention: carbon slide plate wearing valve monitoring accuracy is brought up to 0.2mm;
5, structure of the present invention is dexterous: optical fibre sensor structure is light and handy, and being convenient to be installed on increases responsive pantograph carbon slide position to weight;
6, usable range is wide, and type of service is flexible, various: optical fiber abrasion sensor can apply in the carbon slide plate abrasion detection of the different occasions such as high ferro, motor-car, subway, and its size also can be set flexibly according to carbon slide plate size.
7, maintainability of the present invention is good: utilize multi-core fiber joint, and sensor and light source, photelectric receiver is separated, be convenient to on-the-spot replacing.
Accompanying drawing explanation
Fig. 1 is that optical fiber type pantograph carbon slide of the present invention wears away the one-sided laying schematic diagram of online subregion real-time detecting system;
Fig. 2 is that optical fiber type pantograph carbon slide of the present invention wears away online subregion real-time detecting system bilateral laying schematic diagram;
Wherein: 1-pantograph carbon slide, 2-optical fiber type abrasion sensor, 3-circulator, 4-light source, 5-photoelectrical coupler, 6-signal processing unit, 7-M-1 optical fiber group, 8-M light group, 9-M+1 optical fiber group, 10-light echo body.
Embodiment
As shown in Figure 1, the optical fiber type pantograph carbon slide of the present embodiment wears away online subregion real-time detecting system and comprises pantograph carbon slide [1], optical fiber type abrasion sensor [2], circulator [3], light source [4], photoelectrical coupler [5], signal processing unit [6], M-1 optical fiber group [7], M light group [8], M+1 optical fiber group [9], light echo body [10].
Optical fiber type abrasion sensors [2] stick on pantograph carbon slide [1] outside or are embedded in pantograph carbon slide [1] inside.Optical fiber type abrasion sensor [2] laying mode is as follows, the intersection point of the pantograph carbon slide of usining abrasion detection threshold line and pantograph carbon slide left border line is as true origin, pantograph carbon slide abrasion detection threshold line is as X-axis, and pantograph carbon slide left border line, as Y-axis, is set up coordinate.According to above-mentioned coordinate and pantograph carbon slide abrasion position positioning accuracy request, abrasion band is divided into N abrasion region, the X-axis coordinate of N abrasion region left border is respectively X
1, X
2, X
3x
n, for example, the corresponding scope in N abrasion region is X
nto X
n+1.Take each abrasion region left border is benchmark laying optical fiber, and N abrasion district corresponding N optical fiber group, comprises P root optical fiber in each optical fiber group.(M ∈ (1,2,3 to require M ... N)) (Q ∈ (1,2,3 for optical fiber group Q ... P)) optical fiber is laid in M-1 optical fiber group Q optical fiber below, and same optical fiber group internal optical fiber interval is equal, and each optical fiber group internal optical fiber interval all equates.
Light source [1] sends light beam, light beam enters respectively optical fiber type abrasion sensor [2] by circulator [3], light beam wears away sensor [2] other end at optical fiber type is reflected into circulator [3] by light echo body [10], by circulator [3], enter photoelectrical coupler [5] and produce corresponding electric signal, when pantograph wears up to M abrasion region, (M ∈ (1, 2, 3 ... N)) during Q position, in the middle corresponding M optical fiber group of optical fiber type abrasion sensors [3], (Q ∈ (1 for Q, 2, 3 ... P)) optical fiber ruptures, and (in the middle corresponding M optical fiber group of optical fiber type abrasion sensors [3], (Q ∈ (1 for Q, 2, 3 ... P)) optical fiber is (X
m, Q) optical fiber), corresponding unglazed the passing through of light path, is attached thereto photoelectrical coupler [5] output signal connecing and changes, and by pantograph signal processing unit [6], records change amount signal, obtains abrasion position and the abrasion value of pantograph carbon slide [1].
Light echo body [10] grinds to form plane for optical fiber type being worn away to one end of optical fiber in sensor [2], plays reflected light effect.
[1], optical fiber type abrasion sensor [2], circulator [3], light source [4], photoelectrical coupler [5], signal processing unit [6], M-1 optical fiber group [7], M light group [8], M+1 optical fiber group [9], light echo body [10].
Light source [1] is selected infrared band LED or visible light wave range LED.
Optical fiber abrasion sensors [2] comprise optical fiber radical, fibre diameter and each optical fiber and paste spacing according to accuracy of detection requirement and set.Optical fiber type abrasion sensors [2] are for being laid in side by side suprabasil high-temperature resistant optical fiber band, its choice of the substrates compound substance, macromolecule flexible material.Fibre diameter in high-temperature resistant optical fiber band and each optical fiber are pasted the precision that spacing determines optical fiber type pantograph carbon slide [1] abrasion Real-time and On-line, and it is higher that high-temperature resistant optical fiber diameter is thinner, each optical fiber is pasted the less measuring accuracy of spacing.
Optical fiber abrasion sensors [2] can apply to the different occasions such as high ferro, motor-car, subway, and its concrete size also can be used the size of carbon slide plate and set according to different occasions.
Electric signal carries out demodulation process by the signal processing unit [6] being connected with photoelectrical coupler [5], obtains abrasion value and the abrasion region of pantograph carbon slide.
Embodiment 2:
As shown in Figure 2, can increase pantograph carbon slides [1] abrasion region optical fiber laying quantity by bury optical fiber type abrasion sensors [2] in the stickup of pantograph carbon slide [1] eroded area both sides or both sides, this laying mode can make pantograph carbon slide abrasion [1] region optical fiber laying quantity double, and then improves measuring accuracy.The optical fiber type pantograph carbon slide of the present embodiment wears away online subregion real-time detecting system, comprises pantograph carbon slide [1], optical fiber type abrasion sensor [2], circulator [3], light source [4], photoelectrical coupler [5], signal processing unit [6], M-1 optical fiber group [7], M light group [8], M+1 optical fiber group [9], light echo body [10].
First optical fiber type abrasion sensor [2] stick on pantograph carbon slide [1] outside or are embedded in pantograph carbon slide outside inner.Optical fiber type abrasion sensor [2] laying mode is as follows, the intersection point of the pantograph carbon slide of usining abrasion detection threshold line and pantograph carbon slide left border line is as true origin, pantograph carbon slide abrasion detection threshold line is as X-axis, and pantograph carbon slide left border line, as Y-axis, is set up coordinate.According to above-mentioned coordinate and pantograph carbon slide abrasion position positioning accuracy request, abrasion band is divided into N abrasion region, the X-axis coordinate of N abrasion region left border is respectively X
1, X
2, X
3x
n, for example, the corresponding scope in N abrasion region is X
nto X
n+1.Take each abrasion region left border is benchmark laying optical fiber, and N abrasion district corresponding N optical fiber group, comprises P root optical fiber in each optical fiber group.(M ∈ (1,2,3 to require M ... N)) (Q ∈ (1,2,3 for optical fiber group Q ... P)) optical fiber is laid in M-1 optical fiber group Q optical fiber below, and each optical fiber group internal optical fiber interval all equates.
Second optical fiber type abrasion sensor [2] stick on pantograph carbon slide [1] inner side or are embedded in pantograph carbon slide inner side inner.Its laying mode and first optical fiber type abrasion sensor [2] are similar, and difference is that inside region border and exterior lateral area border are laid staggeredly, and can not overlap to increase region quantity, improve positioning precision.
Light source [1] sends light beam, light beam enters respectively optical fiber type abrasion sensor [2] by circulator [3], light beam wears away sensor [2] other end at optical fiber type is reflected into circulator [3] by light echo body [10], by circulator [3], enter photoelectrical coupler [5] and produce corresponding electric signal, when pantograph wears up to M abrasion region, (M ∈ (1, 2, 3 ... N)) during Q position, in the middle corresponding M optical fiber group of optical fiber type abrasion sensors [3], (Q ∈ (1 for Q, 2, 3 ... P)) optical fiber ruptures, and (in the middle corresponding M optical fiber group of optical fiber type abrasion sensors [3], (Q ∈ (1 for Q, 2, 3 ... P)) optical fiber is (X
m, Q) optical fiber), corresponding unglazed the passing through of light path, is attached thereto photoelectrical coupler [5] output signal connecing and changes, and by pantograph signal processing unit [6], records change amount signal, obtains abrasion position and the abrasion value of pantograph carbon slide [1].
Light echo body [10] grinds to form plane for optical fiber type being worn away to one end of optical fiber in sensor [2], plays reflected light effect.
Light source [1] is selected infrared band LED or visible light wave range LED.
Optical fiber abrasion sensors [2] comprise optical fiber radical, fibre diameter and each optical fiber and paste spacing according to accuracy of detection requirement and set.Optical fiber type abrasion sensors [2] are for being laid in side by side suprabasil high-temperature resistant optical fiber band, its choice of the substrates compound substance, macromolecule flexible material.Fibre diameter in high-temperature resistant optical fiber band and each optical fiber are pasted the precision that spacing determines optical fiber type pantograph carbon slide [1] abrasion Real-time and On-line, and it is higher that high-temperature resistant optical fiber diameter is thinner, each optical fiber is pasted the less measuring accuracy of spacing.
Optical fiber abrasion sensors [2] can apply to the different occasions such as high ferro, motor-car, subway, and its concrete size also can be used the size of carbon slide plate and set according to different occasions.
Optical fiber type abrasion sensors [2] are containing electromagnetic element or other conductive materials, therefore can high pressure resistant, anti-strong electromagnetic; Optical fiber type abrasion sensors [2] are silicon material formation, and environmental corrosion resisting is convenient to online measurement in real time.
Electric signal carries out demodulation process by the signal processing unit [6] being connected with photoelectrical coupler [5], obtains abrasion value and the abrasion region of pantograph carbon slide.
Protection domain of the present invention is not only confined to the present embodiment, and the present embodiment is used for explaining the present invention, change under same principle and design condition of all and the present invention or revise all within protection domain disclosed by the invention.
Claims (6)
1. optical fiber type pantograph carbon slide wears away online subregion real-time detecting system, it is characterized in that: comprise pantograph carbon slide [1], optical fiber type abrasion sensor [2], circulator [3], light source [4], photoelectrical coupler [5], signal processing unit [6], M-1 optical fiber group [7], M light group [8], M+1 optical fiber group [9], light echo body [10]; Optical fiber type abrasion sensors [2] stick on pantograph carbon slide [1] outside or are embedded in pantograph carbon slide [1] inside, utilize the logical optical property of optical fiber and the installation position of optical fiber that abrasion band is divided into N abrasion region, when abrasion produce, cause the optical fiber breakdown in corresponding abrasion region, the logical impaired disappearance of optical property, by the statistical study to difference abrasion region inner fiber break-make situation, provide wearing valve and the abrasion region of pantograph carbon slide [1].
2. optical fiber type pantograph carbon slide according to claim 1 wears away online subregion real-time detecting system, it is characterized in that: optical fiber type abrasion sensors [2] stick on pantograph carbon slide [1] outside or are embedded in pantograph carbon slide [1] inside; Optical fiber type abrasion sensor [2] laying mode is as follows, the intersection point of the pantograph carbon slide of usining abrasion detection threshold line and pantograph carbon slide left border line is as true origin, pantograph carbon slide abrasion detection threshold line is as X-axis, and pantograph carbon slide left border line, as Y-axis, is set up coordinate; According to above-mentioned coordinate and pantograph carbon slide abrasion position positioning accuracy request, abrasion band is divided into N abrasion region, the X-axis coordinate of N abrasion region left border is respectively X
1, X
2, X
3x
n, for example, the corresponding scope in N abrasion region is X
nto X
n+1; Take each abrasion region left border is benchmark laying optical fiber, and N abrasion district corresponding N optical fiber group, comprises P root optical fiber in each optical fiber group; (M ∈ (1,2,3 to require M ... N)) (Q ∈ (1,2,3 for optical fiber group Q ... P)) optical fiber is laid in M-1 optical fiber group Q optical fiber below, and same optical fiber group internal optical fiber interval is equal, and each optical fiber group internal optical fiber interval all equates;
Light source [1] sends light beam, light beam enters optical fiber type abrasion sensor [2] by circulator [3], light beam wears away sensor [2] other end at optical fiber type is reflected into circulator [3] by light echo body [10], by circulator [3], enter photoelectrical coupler [5] and produce corresponding electric signal, when pantograph wears up to M abrasion region, (M ∈ (1, 2, 3 ... N)) during Q position, in the middle corresponding M optical fiber group of optical fiber type abrasion sensors [3], (Q ∈ (1 for Q, 2, 3 ... P)) optical fiber ruptures, corresponding unglazed the passing through of light path, being attached thereto photoelectrical coupler [5] output signal connecing changes, by pantograph signal processing unit [6], record change amount signal, obtain abrasion position and the abrasion value of pantograph carbon slide [1].
3. optical fiber type pantograph carbon slide according to claim 1 and 2 wears away online subregion real-time detecting system, it is characterized in that: optical fiber abrasion sensors [2] comprise optical fiber radical, fibre diameter and each optical fiber and paste spacing according to accuracy of detection requirement and set; Optical fiber type abrasion sensors [2] are for being laid in side by side suprabasil high-temperature resistant optical fiber band, its choice of the substrates compound substance, macromolecule flexible material; Fibre diameter in high-temperature resistant optical fiber band and each optical fiber are pasted the precision that spacing determines optical fiber type pantograph carbon slide [1] abrasion Real-time and On-line, and it is higher that high-temperature resistant optical fiber diameter is thinner, each optical fiber is pasted the less measuring accuracy of spacing;
Optical fiber type abrasion sensors [2] are containing electromagnetic element or other conductive materials, therefore can high pressure resistant, anti-strong electromagnetic; Optical fiber type abrasion sensors [2] are silicon material formation, and environmental corrosion resisting is convenient to online measurement in real time;
Optical fiber abrasion sensors [2] can apply to the different occasions such as high ferro, motor-car, subway, and its concrete size also can be used the size of carbon slide plate and set according to different occasions.
4. optical fiber type pantograph carbon slide according to claim 3 wears away online subregion real-time detecting system, it is characterized in that: by bury optical fiber type abrasion sensors [2] in the stickup of pantograph carbon slide [1] eroded area both sides or both sides, increase pantograph carbon slides [1] abrasion region optical fiber laying quantity, described laying mode can make pantograph carbon slide abrasion [1] region optical fiber laying quantity double, and then improves test essence.
5. optical fiber type pantograph carbon slide according to claim 4 wears away online subregion real-time detecting system, it is characterized in that: light echo body [10] grinds to form plane for optical fiber type being worn away to one end of optical fiber in sensor [2], plays reflected light effect;
Light source [1] is selected infrared band LED or visible light wave range LED;
Electric signal carries out demodulation process by the signal processing unit [6] being connected with photoelectrical coupler [5], obtains abrasion value and the abrasion region of pantograph carbon slide.
6. optical fiber type pantograph carbon slide according to claim 3 wears away online subregion real-time detecting system, it is characterized in that: light echo body [10] grinds to form plane for optical fiber type being worn away to one end of optical fiber in sensor [2], plays reflected light effect;
Light source [1] is selected infrared band LED or visible light wave range LED;
Electric signal carries out demodulation process by the signal processing unit [6] being connected with photoelectrical coupler [5], obtains abrasion value and the abrasion region of pantograph carbon slide.
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| CN109813232A (en) * | 2019-01-25 | 2019-05-28 | 武汉理工大学 | Sliding bearing abrasion measuring method based on fiber grating length |
| CN112733976A (en) * | 2020-12-18 | 2021-04-30 | 攀枝花容则钒钛有限公司 | Pantograph carbon slide abrasion detection system |
| WO2023029308A1 (en) * | 2021-08-31 | 2023-03-09 | 河北地质大学 | Loss detection system for carbon slide plate of pantograph |
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