CN1936520A - Optical-fiber sensing type railroad track scale and its data processing method - Google Patents
Optical-fiber sensing type railroad track scale and its data processing method Download PDFInfo
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- CN1936520A CN1936520A CN 200610113726 CN200610113726A CN1936520A CN 1936520 A CN1936520 A CN 1936520A CN 200610113726 CN200610113726 CN 200610113726 CN 200610113726 A CN200610113726 A CN 200610113726A CN 1936520 A CN1936520 A CN 1936520A
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Abstract
This invention relates to a railroad track scale of a fiber sensing type including: a spandrel girder unit, a data collection unit, a weighing data process unit and a data transmission unit, in which, the spandrel girder unit is the on-line used rail of railway, said data collection unit includes: a fiber sensor and a fiber modem instrument, said fiber sensor is set on said rail to get the light wave signal, said fiber modem instrument is connected with the fiber sensor to convert the light wave signals to the strain signal of the rail, said weighing data process unit is connected with the data collection unit to convert the strain signal to weight and the data transmission unit is used for transmitting data.
Description
Technical field
What the present invention relates to is a kind of metering outfit, particularly be a kind of utilize optical fiber sensing technology AT STATION, unit such as goods yard, harbour and industrial and mining enterprises track weighing-appliance and the data processing method thereof that will weigh to the train freight.
Background technology
Track scale equipment is divided into disconnected rail and continuous two kinds of forms of rail, wherein the broken rail track scale be owing to need block on continuous rail, limited train by the time speed, and installation period is long, the engineering cost height.The broken rail track scale does not need rail is blocked, the speed when having improved train and crossing weighing apparatus, and engineering time and expense also reduce greatly than broken rail track scale.At present, the broken rail track scale has not obtained using widely.
Usually the broken rail track scale need not adopt pressure and shear force sensor to form measuring system, and wherein shear force sensor is generally installed in the boring of rail waist, has had a strong impact on the intensity of rail, and the train security presence influence; And have high-voltage fence near the railway usually, and being easy to form electromagnetic field, this measurement result to resistance strain type sensor has brought very big interference need guarantee the safety of measuring sensor with siganl thunder-proof device;
For addressing the above problem, creator of the present invention obtains this creation finally through research and test for a long time.
Summary of the invention
The objective of the invention is to, a kind of optical-fiber sensing type railroad track scale and data processing method thereof are provided, address the aforementioned drawbacks, when train is carried out the weight test, can overcome the interference of electromagnetic field, install convenience is set, the precision height, increased the distance that signal transmits, and need on rail, not hole and to have guaranteed train traffic safety, be applicable to on-the-spot request for utilization track scale equipment.
For achieving the above object, the technical solution used in the present invention is, a kind of optical-fiber sensing type railroad track scale at first is provided, and it comprises: spandrel girder unit, data acquisition unit and weigh data processing unit and data transmission unit, wherein,
Described spandrel girder unit is the rail of the online use of railway;
Described data acquisition unit comprises: Fibre Optical Sensor and optical fiber modulation instrument, described Fibre Optical Sensor is arranged on the described rail, obtain lightwave signal, described optical fiber modulation instrument is connected with Fibre Optical Sensor, described lightwave signal is converted to the strain signal of rail;
The described data processing unit of weighing links to each other with data acquisition unit, and described strain signal is converted to weight;
Described data transmission unit is in order to the transmission data;
Preferable, the described data processing unit of weighing is computing machine, embedded data analytic system or single-chip microcomputer; Optical fiber modulation instrument in the described data acquisition unit links to each other with the described data processing unit of weighing by USB interface;
Preferable, described Fibre Optical Sensor is installed in the bottom or the waist of spandrel girder unit rail;
Preferable, comprising that also a data management system links to each other with the data processing unit of weighing by data transmission unit, described data management system manages the every data that obtain;
Preferable, described data management system is one to have the computing machine of data base administrator;
Preferable, described transmission unit is one of them or combination of PC104 bus, CAN bus, RS232 bus.
Next provides a kind of data processing method of optical-fiber sensing type railroad track scale, and it utilizes optical-fiber sensing type railroad track scale to realize, its process step is:
A step: in the data processing unit data processing of weighing, comprise a comparing unit, a threshold value is set therein, then obtain to claim signal, then obtain to call in the following text signal if be lower than threshold value if the strain signal that obtains is higher than threshold value;
B step: obtain train speed, its mounting distance that equals two groups of Fibre Optical Sensors produces peak signal divided by the adjacent fiber sensor the time interval;
The c step: judge vehicle, its time interval that is meant that twice peak signal of one group of Fibre Optical Sensor occurs multiply by train speed and calculates the axletree distance, then according to axletree apart from judging vehicle;
D step: obtain this section carriage weight, it is the peak value at the described strain signal that claims in the acquisition will collect behind the signal, by Hooke's law according to the strain calculated stress, multiply by the weight that the rail sectional area obtains the single wheel of train again, the weight summation of whole wheels of final compartment obtains the weight in whole joint compartment;
The e step: with above-mentioned data storing to data management system;
The f step: data handling procedure finishes;
Preferable, the weight sum that the train goods weight equals every joint compartment deducts the train unladen vehicle weight.
Description of drawings
Fig. 1 is the structural representation of optical-fiber sensing type railroad track scale of the present invention;
Fig. 2 is the process flow diagram of optical-fiber sensing type railroad track scale data processing method of the present invention;
Fig. 3 is an optical-fiber sensing type railroad track scale strain signal oscillogram of the present invention.
Description of reference numerals: 1-rail; First group of Fibre Optical Sensor of 211-; Second group of Fibre Optical Sensor of 212-; 22-optical fiber modulation instrument; The 3-single-chip microcomputer; 4-has the computing machine of database; The 51-USB transfer bus; The 52-RS232 bus; A～f-flow chart of data processing; P
1-the first group of strain signal waveform that Fibre Optical Sensor produces; P
2-the second group of strain signal waveform that Fibre Optical Sensor produces.
Embodiment
Below with reference to accompanying drawing, to this novel above-mentionedly is described in more detail with other technical characterictic and advantage.
See also shown in Figure 1, it is the structural representation of optical-fiber sensing type railroad track scale of the present invention system, native system comprises: spandrel girder unit, data acquisition unit, the data processing unit of weighing, data transmission unit and data management system, wherein, described spandrel girder unit is the rail 1 of the online use of railway; Described data acquisition unit comprises: first group of Fibre Optical Sensor 211, second group of Fibre Optical Sensor 212 and optical fiber modulation instrument 22, described first group of Fibre Optical Sensor 211, second group of Fibre Optical Sensor 212 are arranged on the described rail 1, obtain lightwave signal, described optical fiber modulation instrument 22 is connected with first, second Fibre Optical Sensor, described lightwave signal is converted to the strain signal of rail 1; The described data processing unit of weighing is that single-chip microcomputer 3 can certainly be computing machine, embedded data analytic system; Link to each other with data acquisition unit, described strain signal is converted to weight; Described data transmission unit is in order to the transmission data; Described transmission unit is one of them or combination of PC104 bus, CAN bus, RS232 bus 52;
Wherein, described first, second group Fibre Optical Sensor is installed in the bottom or the waist of load-bearing rail 1, connects into described optical fiber modulation instrument 22 by optical fiber, and described optical fiber modulation instrument 22 is connected with described single-chip microcomputer 3 by USB interface 51.When train by being provided with first, during the spandrel girder track scale of second group of Fibre Optical Sensor, because the train action of gravity causes the distortion of load-bearing rail, this distortion is by first, the supporting construction of second group of Fibre Optical Sensor is delivered to first, on second group of Fibre Optical Sensor, first, sensitive element is sensed this distortion in second group of Fibre Optical Sensor, caused the wavelength variations of the light signal that exists in the optical fiber, when light signal enters in the described optical fiber modulation instrument 22, the variation of light wave length is a digital quantity by the strain that is mapped as the load-bearing rail after handling, realized measurement like this to weight of train signal, described optical fiber modulation instrument 22 is that prior art those skilled in the art can be easy to obtain and use, and has not just given unnecessary details here.
Described optical fiber modulation instrument 22 is input to the dependent variable of the load-bearing rail that obtains in the single-chip microcomputer 3 by USB interface 51 at last.Adopt the combination of first, second group Fibre Optical Sensor and optical fiber modulation instrument 22 like this, data acquisition unit has just been finished the data acquisition surveying work, has obtained the digital quantity that single-chip microcomputer 3 can be handled.
See also Fig. 2, it is the data processing method of the optical-fiber sensing type railroad track scale of correspondence of the present invention, and it utilizes optical-fiber sensing type railroad track scale to realize, its process step is:
A step: obtain to claim on the train, call in the following text signal;
B step: obtain train speed;
C step: judge vehicle;
D step: obtain this section carriage weight;
The e step: with above-mentioned data storing to data management system;
The f step: data handling procedure finishes;
Claim, call in the following text signal on the described acquisition train, be that the comparing unit that comprises in the data processing unit data processing of weighing is provided with a threshold value, because train is on rail, will give the certain pressure of track, because the sensitivity of Fibre Optical Sensor, will inevitably produce strain signal, then obtain to claim signal, then obtain to call in the following text signal if be lower than threshold value if the strain signal that obtains is higher than threshold value;
See also shown in Figure 3, it is an optical-fiber sensing type railroad track scale strain signal oscillogram of the present invention, owing in the middle of whole process, have a large amount of noises and shake, therefore waveform is rough, wherein, X-axis is a time shaft, represents the sampling time of first, second group Fibre Optical Sensor, the strain signal amount of Y-axis for obtaining, P
1Be the strain signal oscillogram of first group of Fibre Optical Sensor 211, P
2It is the strain signal oscillogram of second group of Fibre Optical Sensor 212, reach peak value for the first time in the t1 moment first group of Fibre Optical Sensor 211 dependent variable, reach adjacent second time of peak value constantly at t3, t2 second group of Fibre Optical Sensor 212 dependent variable constantly reaches peak value for the first time;
Described acquisition this section carriage weight g
iBe to claim that on obtaining the described strain signal that will collect behind the signal is that first, second group Fibre Optical Sensor obtains dependent variable peak value top1 and top2, by Hooke's law according to the strain calculated stress, multiply by the weight that the rail sectional area obtains the single wheel of train again, the weight summation of all wheels of final compartment obtains the weight g in whole joint compartment
i
What described acquisition train speed v equaled first group of Fibre Optical Sensor 211 and second group of Fibre Optical Sensor 212 reaches the time interval Δ t of peak signal apart from s divided by first group of Fibre Optical Sensor 211 and second group of Fibre Optical Sensor 212;
Described judgement vehicle is meant that first group of Fibre Optical Sensor 211 or second group of Fibre Optical Sensor 212 reaches peak signal time of occurrence interval delta T for twice and multiply by train speed v and calculate the axletree distance, then according to axletree apart from judging vehicle;
Train goods weight G equals the weight g in every joint compartment
iSum deducts train unladen vehicle weight G
0, described train unladen vehicle weight G
0Just on the books when dispatching from the factory.
Owing to do not adopt shear force sensor, can not adopt track scale commonly used to judge the algorithm of axletree at track scale of the present invention.After the measurement data analysis that first, second group Fibre Optical Sensor is repeatedly gathered, discovery can adopt the peak value of measurement data as the basis of judging axletree.Because first, second group light sensor is not subjected to the interference of electromagnetic field, compares with the resistance strain type sensor measurement data, the variation of measurement data is smooth.When adopting resistance strain type sensor to measure, if when there is defective such as flat scar in wheel, a peak value often appears in signal, and the accuracy of axletree is judged in influence.Can well overcome such problem when adopting first, second group Fibre Optical Sensor.Because the signal that optical fiber modulation instrument 22 imports single-chip microcomputer 3 into is the dependent variable of first, second group Fibre Optical Sensor, this value has positive and negative branch.Have only when wheel in first, second group Fibre Optical Sensor length range the back generation on the occasion of, just can judge the train axle position according to peak value.If defectives such as flat scar just in time drop on first, second group Fibre Optical Sensor place, then by can peak whether being to calculate on the occasion of the center in interval.
Can obtain the weight of train by the method for setting forth above, then with the same out of Memory of the weight of train that calculates (as license number, speed or the like) complete information of composition train is transferred to data management system by RS232 bus 52, and described data management system is the computing machine with data base management system (DBMS).
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (8)
1, a kind of optical-fiber sensing type railroad track scale is characterized in that, it comprises: spandrel girder unit, data acquisition unit and weigh data processing unit and data transmission unit, wherein,
Described spandrel girder unit is the rail of the online use of railway;
Described data acquisition unit comprises: at least two group Fibre Optical Sensors and optical fiber modulation instrument, described Fibre Optical Sensor is arranged on the described rail, obtain lightwave signal, described optical fiber modulation instrument is connected with Fibre Optical Sensor, described lightwave signal is converted to the strain signal of rail;
The described data processing unit of weighing links to each other with data acquisition unit, and described strain signal is converted to weight;
Described data transmission unit is in order to the transmission data.
2, optical-fiber sensing type railroad track scale according to claim 1 is characterized in that, the described data processing unit of weighing is computing machine, embedded data analytic system or single-chip microcomputer; Optical fiber modulation instrument in the described data acquisition unit links to each other with the described data processing unit of weighing by USB interface.
3, optical-fiber sensing type railroad track scale according to claim 1 is characterized in that, described Fibre Optical Sensor is installed in the bottom or the waist of spandrel girder unit rail.
4, optical-fiber sensing type railroad track scale according to claim 1 is characterized in that, comprises that also a data management system links to each other with the data processing unit of weighing by data transmission unit, and described data management system manages the every data that obtain.
5, optical-fiber sensing type railroad track scale according to claim 4 is characterized in that, described data management system is one to have the computing machine of supervisory routine.
According to claim 1 or 4 described optical-fiber sensing type railroad track scales, it is characterized in that 6, described data transmission unit is one of them or combination of PC104 bus, CAN bus, RS232 bus.
7, a kind of data processing method of optical-fiber sensing type railroad track scale, it utilizes optical-fiber sensing type railroad track scale to realize, it is characterized in that, and its process step is:
A step: in the data processing unit data processing of weighing, comprise a comparing unit, a threshold value is set therein, then obtain to claim signal, then obtain to call in the following text signal if be lower than threshold value if the strain signal that obtains is higher than threshold value;
B step: obtain train speed, its mounting distance that equals two groups of Fibre Optical Sensors produces peak signal divided by the adjacent fiber sensor the time interval;
The c step: judge vehicle, its time interval that is meant that twice peak signal of one group of Fibre Optical Sensor occurs multiply by train speed and calculates the axletree distance, then according to axletree apart from judging vehicle;
D step: obtain this section carriage weight, it is the peak value at the described strain signal that claims in the acquisition will collect behind the signal, by Hooke's law according to the strain calculated stress, multiply by the weight that the rail sectional area obtains the single wheel of train again, the weight summation of whole wheels of final compartment obtains the weight in whole joint compartment;
The e step: with above-mentioned data storing to data management system;
The f step: data handling procedure finishes.
8, the data processing method of optical-fiber sensing type railroad track scale according to claim 7 is characterized in that, the weight sum that the train goods weight equals every joint compartment deducts the train unladen vehicle weight.
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| CN2006101137261A CN1936520B (en) | 2006-10-13 | 2006-10-13 | Data processing method of optical-fiber sensing type railroad track scale |
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| CN2006101137261A CN1936520B (en) | 2006-10-13 | 2006-10-13 | Data processing method of optical-fiber sensing type railroad track scale |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031732A (en) * | 2010-12-28 | 2011-04-27 | 中国科学院半导体研究所 | Intelligent fiber fishplate |
| CN102121213A (en) * | 2010-12-28 | 2011-07-13 | 中国科学院半导体研究所 | Steel rail capable of monitoring cracks and deformation |
| CN102392395A (en) * | 2011-09-15 | 2012-03-28 | 中国科学院半导体研究所 | Point rail with self-detection function used for high-speed railway turnout |
| CN103994809A (en) * | 2014-03-13 | 2014-08-20 | 王强 | Weigh-in-motion method of high-speed and dynamic automobile based on optical fiber grating |
| CN104729642A (en) * | 2015-04-13 | 2015-06-24 | 杭州钱江称重技术有限公司 | Rail weighbridge measuring system based on CAN (controller area network) bus |
| CN106197633A (en) * | 2016-07-05 | 2016-12-07 | 厦门市三友软件有限公司 | Vehicle weighing method, vehicle weighing device and vehicle weighing system |
| CN108800430A (en) * | 2018-07-02 | 2018-11-13 | 珠海格力电器股份有限公司 | A kind of air-conditioning system, the method and device for measuring air-conditioning system refrigerant weight |
| CN112284585A (en) * | 2020-10-16 | 2021-01-29 | 广州特种机电设备检测研究院 | Device based on optical fiber testing wheel pressure |
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| DE3307246C2 (en) * | 1983-03-02 | 1985-04-04 | Meßmetallurgie GmbH, 5810 Witten | Method for identifying wagons running in a fast-moving train formation and device for carrying out the method |
| US4560016A (en) * | 1983-12-14 | 1985-12-24 | Anco Engineers, Incorporated | Method and apparatus for measuring the weight of a vehicle while the vehicle is in motion |
| DE19518123C2 (en) * | 1995-05-17 | 1997-04-17 | Quante Ag | Load sensor |
| CN2553350Y (en) * | 2001-07-25 | 2003-05-28 | 张保军 | Fibre-optical measuring electronic track weighing apparatus |
| EP2351680B1 (en) * | 2004-03-29 | 2012-12-12 | The Hong Kong Polytechnic University | System and process for monitoring railway tracks |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031732A (en) * | 2010-12-28 | 2011-04-27 | 中国科学院半导体研究所 | Intelligent fiber fishplate |
| CN102121213A (en) * | 2010-12-28 | 2011-07-13 | 中国科学院半导体研究所 | Steel rail capable of monitoring cracks and deformation |
| CN102392395A (en) * | 2011-09-15 | 2012-03-28 | 中国科学院半导体研究所 | Point rail with self-detection function used for high-speed railway turnout |
| CN103994809A (en) * | 2014-03-13 | 2014-08-20 | 王强 | Weigh-in-motion method of high-speed and dynamic automobile based on optical fiber grating |
| CN104729642A (en) * | 2015-04-13 | 2015-06-24 | 杭州钱江称重技术有限公司 | Rail weighbridge measuring system based on CAN (controller area network) bus |
| CN104729642B (en) * | 2015-04-13 | 2016-01-06 | 杭州钱江称重技术有限公司 | A kind of track scale metering system based on CAN |
| CN106197633A (en) * | 2016-07-05 | 2016-12-07 | 厦门市三友软件有限公司 | Vehicle weighing method, vehicle weighing device and vehicle weighing system |
| CN106197633B (en) * | 2016-07-05 | 2019-03-12 | 厦门市三友软件有限公司 | Vehicle weighing method, vehicle weighing device and vehicle weighing system |
| CN108800430A (en) * | 2018-07-02 | 2018-11-13 | 珠海格力电器股份有限公司 | A kind of air-conditioning system, the method and device for measuring air-conditioning system refrigerant weight |
| CN112284585A (en) * | 2020-10-16 | 2021-01-29 | 广州特种机电设备检测研究院 | Device based on optical fiber testing wheel pressure |
| CN112284585B (en) * | 2020-10-16 | 2022-03-08 | 广州特种机电设备检测研究院 | Device based on optical fiber testing wheel pressure |
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