CN109917224A - Non-contact bow net arcing energy testing apparatus and method based on spectroscopic diagnostics - Google Patents
Non-contact bow net arcing energy testing apparatus and method based on spectroscopic diagnostics Download PDFInfo
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- CN109917224A CN109917224A CN201910180023.8A CN201910180023A CN109917224A CN 109917224 A CN109917224 A CN 109917224A CN 201910180023 A CN201910180023 A CN 201910180023A CN 109917224 A CN109917224 A CN 109917224A
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Abstract
The invention discloses a kind of, and the non-contact bow net arcing based on spectroscopic diagnostics detects energy device and method.The present invention provides a set of whole solution for bow net arcing detection field, including bow net arcing detection device and method, the real time on-line monitoring of bow net arcing energy is realized, provides effective, accurate reference frame for the indices of the dynamic Contact performance and arcing of grasping true Pantograph-OCS system in time.High sensitivity of the present invention, strong antijamming capability, the energy indexes of the parameter index of on-line checking Pantograph-OCS system, especially bow net arcing are not passed through with bow net contact in the detection process, it can reflect to objective the current carrying quality situation of bow net, provide guarantee for the safe operation of bullet train.
Description
Technical field
The present invention relates to electric railway systematic survey technical fields, and in particular to a kind of based on the non-contact of spectroscopic diagnostics
Formula bow net arcing detects energy device and method.
Background technique
High-speed railway has obtained answering extensively in worldwide because of the advantages that its speed is fast, pollution is small, carrying capacity is big
With.Pantograph is the key building block that high-speed EMUs obtains electric energy from contact net.It is good dynamic between pantograph and contact net
State contact performance is the basic guarantee of safe train operation.With the continuous promotion of train speed, between pantograph and contact net
Vibration can aggravate, the offline phenomenon of bow net is more frequent.When train generation bow net is offline, phenomenon of arc discharge, bow net electricity can be generated
Arc meeting ablation contact line and pantograph pan, generate high-frequency noise and overvoltage, the former can shorten the service life of pantograph, after
Person can communication system to train and insulating element generate impact, threaten the traffic safety of train.Therefore, how to Pantograph-OCS system
Current carrying quality carry out real time on-line monitoring, the contact condition and the indices of electric arc grasped between bow net in time just seem outstanding
It is important.
Domestic mature bow net on-line monitoring technique is mostly by the pressure size between detection bow net or to pass through at present
The voltage and current of bow net electric arc is measured to reflect the dynamic Contact performance of bow net.By the detection mode for measuring bow net contact pressure
The original structure of pantograph is changed, therefore not can truly reflect the dynamic relationship of bow net；Pass through measurement bow net electric arc
Current-voltage correlation is only capable of that qualitative analysis electric arc is strong and weak, can not quantitative analysis bow net electric arc inner parameter.
Temperature is the Important Parameters for characterizing bow net arc-plasma physical characteristic, grasps bow net arc temperature at any time
Changing rule to the combustion mechanism for analyzing electric arc and its is of great significance to the ablation situation of carbon slipper.At present for bow net electricity
Effective detection means of arc is also more short of, and can not effectively reflect bow net arcing situation.
Summary of the invention
For above-mentioned deficiency in the prior art, a kind of non-contact bow net combustion based on spectroscopic diagnostics provided by the invention
Arc energy testing apparatus and method solve the problems, such as effectively reflect bow net arcing situation.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows: a kind of based on the non-contact of spectroscopic diagnostics
Formula bow net arcing energy testing apparatus, including sequentially connected optical system for collecting, photoelectric conversion module, pre-amplification circuit mould
Block, filter module, real-time AD conversion module, processor module, communication module and host computer, the optical system for collecting setting
In Pantograph-OCS system rear end, the photoelectric conversion module, pre-amplification circuit module, filter module, real-time AD conversion module, place
Reason device module and communication module are arranged in the compartment of pantograph bottom；
The optical system for collecting is used to extract the light of specific wavelength in electric arc transmitting light, obtains optical signal；
The photoelectric conversion module is for converting optical signals to electric signal；
The pre-amplification circuit module, filter module and real-time AD conversion module for being located electric signal in advance
Reason；
The processor module according to pretreated electric signal for carrying out that arcing mean temperature and irradiation is calculated
Intensity；
The communication module is used to send host computer for arcing mean temperature and irradiation intensity；
The host computer is for showing arcing mean temperature and irradiation intensity.
Further: it is at 510.55nm and 521.82nm that the optical signal of the optical system for collecting acquisition, which includes wavelength,
The ultraviolet signal of characteristic spectral line optical signal and wave band at 220nm-260nm.
A kind of non-contact bow net arcing energy detection method based on spectroscopic diagnostics, comprising the following steps:
S1, the characteristic spectral line optical signal and ultraviolet signal that bow net arcing is acquired by optical system for collecting；
The characteristic spectral line optical signal includes the characteristic spectral line optical signal that wavelength is 510.55nm and wavelength is 521.82nm
Characteristic spectral line optical signal；
S2, collected characteristic spectral line optical signal and ultraviolet signal are converted to by telecommunications by photoelectric conversion module
Number；
S3, electric signal is pre-processed by pre-amplification circuit module, filter module and real-time AD conversion module,
Obtain pretreated characteristic spectral line electric signal and ultraviolet light electric signal；
S4, arcing mean temperature is calculated using pretreated two-way characteristic spectral line electric signal by processor module；
S5, arcing irradiation intensity is calculated using pretreated ultraviolet light electric signal by processor module.
Further: the calculation formula of arcing mean temperature in the step S4 are as follows:
In above formula, T is arcing mean temperature, λ1For the wavelength of fisrt feature spectral line optical signal, λ1=521.82nm, λ2For
The wavelength of second feature spectral line optical signal, λ2=510.55nm, A1It is fisrt feature spectral line optical signal atom from high level to low energy
The transition probability of grade, A2Transition probability for second feature spectral line optical signal atom from from high level to low-lying level, g1For fisrt feature
The statistical weight of spectral line optical signal high level, g2For the statistical weight of second feature spectral line optical signal high level,For the first spy
The irradiation intensity of spectral line optical signal is levied,For the irradiation intensity of second feature spectral line optical signal, k is Boltzmann constant, E1For
The excitation energy of fisrt feature spectral line optical signal high level, E2For the excitation energy of second feature spectral line optical signal high level.
Further: the acquisition methods of the irradiation intensity of the characteristic spectral line optical signal are as follows:
A, by standard sources, optical system for collecting, spectrometer, photoelectric conversion module, processor module, image module and PC
Machine is placed sequentially on optical experiment bench；
B, so that the intensity of standard sources is changed by adjusting potentiometer, record each photoelectric conversion module output
Voltage, and with spectrometer record each output voltage it is corresponding wavelength be 510.55nm and 521.82nm at the intensity of spectral line
Value；
C, the voltage-intensity curves at 510.55nm and 521.82nm are fitted by MATLABA, obtains characteristic spectrum linear light
The irradiation intensity of signal and the relational expression of voltage.
Further: the wavelength is the irradiation intensity of 510.55nm characteristic spectral line optical signal and wavelength is 521.82nm spy
Levy the irradiation intensity of spectral line optical signal are as follows:
Iλ1=0.0439V1 2-21.597V1-5001.5
In above formula, Iλ1It is the irradiation intensity of 510.55nm characteristic spectral line optical signal, V for wavelength1Exist for photoelectric conversion module
Output voltage when wavelength is 510.55nm characteristic spectral line optical signal, Iλ2It is the spoke of 521.82nm characteristic spectral line optical signal for wavelength
According to intensity, V2For output voltage of the photoelectric conversion module when wavelength is 521.82nm characteristic spectral line optical signal.
Further: the calculation formula of arcing irradiation intensity in the step S5 are as follows:
J=3.01 × 10-9l2P
In above formula, J is arcing irradiation intensity, and l is the distance of light source device for detecting distance, and P is radiant power.
Further: the calculation method of the radiant power are as follows: examined by non-contact bow net arcing energy testing apparatus
The ultraviolet signal that it is exported when measuring a certain arcing, counts the optical signal using processor module in arcing section
Value integral obtains the radiant power P of arcing.
Further: the arcing section is the duration that optical signal is converted into electric signal.
The invention has the benefit that the present invention provides a set of whole solution for bow net arcing detection field,
Including bow net arcing detection device and method, the real time on-line monitoring of bow net arcing energy is realized, to grasp true bow in time
The dynamic Contact performance of net system and the indices of arcing provide effective, accurate reference frame.
High sensitivity of the present invention, strong antijamming capability, do not pass through on-line checking bow net with bow net contact in the detection process
The energy indexes of the parameter index of system, especially bow net arcing can reflect to objective the current carrying quality situation of bow net,
Guarantee is provided for the safe operation of bullet train.
Detailed description of the invention
Fig. 1 is the block diagram of the non-contact bow net arcing detection device based on spectroscopic diagnostics in the present invention；
Fig. 2 is the scheme of installation of apparatus of the present invention；
Fig. 3 is flow chart of the method for the present invention；
Fig. 4 is the launching light spectrogram of bow net arcing.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
In the present invention, when arcing energy is that arcing phenomenon occurs for bow net, the average temperature of electric arc detected by detection device
Total characterization of degree and irradiation intensity.
As shown in Figure 1, a kind of non-contact bow net arcing energy testing apparatus based on spectroscopic diagnostics, including be sequentially connected
Optical system for collecting, photoelectric conversion module, pre-amplification circuit module, filter module, real-time AD conversion module, processor
Module, communication module and host computer, as shown in Fig. 2, optical system for collecting setting is in Pantograph-OCS system rear end, photoelectric conversion module,
Pre-amplification circuit module, filter module, real-time AD conversion module, processor module and communication module are arranged at pantograph
In the compartment of bottom；
Optical system for collecting is used to extract the light of specific wavelength in electric arc transmitting light, obtains optical signal；
Photoelectric conversion module is for converting optical signals to electric signal；
Pre-amplification circuit module, filter module and real-time AD conversion module are for pre-processing electric signal；
Processor module according to pretreated electric signal for carrying out that arcing mean temperature and irradiation intensity is calculated；
Communication module is used to send host computer for arcing mean temperature and irradiation intensity；
Host computer is for showing arcing mean temperature and irradiation intensity.
In one embodiment of the invention, it is 510.55nm that the optical signal of the optical system for collecting acquisition, which includes wavelength,
With ultraviolet signal of the characteristic spectral line optical signal and wave band at 521.82nm at 220nm-260nm.
As shown in figure 3, a kind of non-contact bow net arcing energy detection method based on spectroscopic diagnostics, including following step
It is rapid:
S1, the characteristic spectral line optical signal and ultraviolet signal that bow net arcing is acquired by optical system for collecting；
The characteristic spectral line optical signal includes the characteristic spectral line optical signal that wavelength is 510.55nm and wavelength is 521.82nm
Characteristic spectral line optical signal；
S2, collected characteristic spectral line optical signal and ultraviolet signal are converted to by telecommunications by photoelectric conversion module
Number；
S3, electric signal is pre-processed by pre-amplification circuit module, filter module and real-time AD conversion module,
Obtain pretreated characteristic spectral line electric signal and ultraviolet light electric signal；
S4, arcing mean temperature is calculated using pretreated two-way characteristic spectral line electric signal by processor module；
The calculation formula of arcing mean temperature are as follows:
In above formula, T is arcing mean temperature, λ1For the wavelength of fisrt feature spectral line optical signal, λ1=521.82nm, λ2For
The wavelength of second feature spectral line optical signal, λ2=510.55nm, A1It is fisrt feature spectral line optical signal atom from high level to low energy
The transition probability of grade, A2Transition probability for second feature spectral line optical signal atom from from high level to low-lying level, g1For fisrt feature
The statistical weight of spectral line optical signal high level, g2For the statistical weight of second feature spectral line optical signal high level,For the first spy
The irradiation intensity of spectral line optical signal is levied,For the irradiation intensity of second feature spectral line optical signal, k is Boltzmann constant, E1For
The excitation energy of fisrt feature spectral line optical signal high level, E2For the excitation energy of second feature spectral line optical signal high level.
The acquisition methods of the irradiation intensity of characteristic spectral line optical signal are as follows:
A, by standard sources, optical system for collecting, spectrometer, photoelectric conversion module, processor module, image module and PC
Machine is placed sequentially on optical experiment bench；
B, so that the intensity of standard sources is changed by adjusting potentiometer, record each photoelectric conversion module output
Voltage, and with spectrometer record each output voltage it is corresponding wavelength be 510.55nm and 521.82nm at the intensity of spectral line
Value, record result are as shown in Figure 4；
C, the voltage-intensity curves at 510.55nm and 521.82nm are fitted by MATLABA, obtains characteristic spectrum linear light
The irradiation intensity of signal and the relational expression of voltage.
Wavelength is the irradiation intensity of 510.55nm characteristic spectral line optical signal and wavelength is 521.82nm characteristic spectral line optical signal
Irradiation intensity are as follows:
Iλ1=0.0439V1 2-21.597V1-5001.5
In above formula, Iλ1It is the irradiation intensity of 510.55nm characteristic spectral line optical signal, V for wavelength1Exist for photoelectric conversion module
Output voltage when wavelength is 510.55nm characteristic spectral line optical signal, Iλ2It is the spoke of 521.82nm characteristic spectral line optical signal for wavelength
According to intensity, V2For output voltage of the photoelectric conversion module when wavelength is 521.82nm characteristic spectral line optical signal.According to what is measured
Voltage signal can be obtained by corresponding irradiation intensity.
S5, arcing irradiation intensity is calculated using pretreated ultraviolet light electric signal by processor module.
The calculation formula of arcing irradiation intensity are as follows:
J=3.01 × 10-9l2P
In above formula, J is arcing irradiation intensity, and l is the distance of light source device for detecting distance, and P is radiant power.L is non-contact
Distance of the formula bow net arcing energy testing apparatus roof detection part away from pantograph pan.Due to non-contact bow net arcing energy
The installation site that detection device is installed in each roof of train is slightly different, therefore distance l needs actual measurement to obtain, once device
Installation site is fixed, and l is just a constant.
The calculation method of radiant power are as follows: when detecting a certain arcing by non-contact bow net arcing energy testing apparatus
Its ultraviolet signal exported, using processor module to the optical signal, (optical signal conversion is in arcing section in arcing section
At the duration of electric signal) in carry out numerical integration obtain the radiant power P of arcing.
Claims (9)
1. a kind of non-contact bow net arcing energy testing apparatus based on spectroscopic diagnostics, which is characterized in that including being sequentially connected
Optical system for collecting, photoelectric conversion module, pre-amplification circuit module, filter module, real-time AD conversion module, processor
Module, communication module and host computer, optical system for collecting setting are the photoelectric conversion module, preceding in Pantograph-OCS system rear end
It sets amplification circuit module, filter module, real-time AD conversion module, processor module and communication module and is arranged at pantograph bottom
In the compartment in portion；
The optical system for collecting is used to extract the light of specific wavelength in electric arc transmitting light, obtains optical signal；
The photoelectric conversion module is for converting optical signals to electric signal；
The pre-amplification circuit module, filter module and real-time AD conversion module are for pre-processing electric signal；
The processor module according to pretreated electric signal for carrying out that arcing mean temperature and irradiation intensity is calculated；
The communication module is used to send host computer for arcing mean temperature and irradiation intensity；
The host computer is for showing arcing mean temperature and irradiation intensity.
2. the non-contact bow net arcing energy testing apparatus according to claim 1 based on spectroscopic diagnostics, feature exist
It include wavelength in, the optical signal of optical system for collecting acquisition is characteristic spectral line optical signal at 510.55nm and 521.82nm
With ultraviolet signal of the wave band at 220nm-260nm.
3. a kind of non-contact bow net arcing energy detection method based on spectroscopic diagnostics, which comprises the following steps:
S1, the characteristic spectral line optical signal and ultraviolet signal that bow net arcing is acquired by optical system for collecting；
The spy that the characteristic spectral line optical signal includes the characteristic spectral line optical signal that wavelength is 510.55nm and wavelength is 521.82nm
Levy spectral line optical signal；
S2, collected characteristic spectral line optical signal and ultraviolet signal are converted to by electric signal by photoelectric conversion module；
S3, electric signal is pre-processed by pre-amplification circuit module, filter module and real-time AD conversion module, is obtained
Pretreated characteristic spectral line electric signal and ultraviolet light electric signal；
S4, arcing mean temperature is calculated using pretreated two-way characteristic spectral line electric signal by processor module；
S5, arcing irradiation intensity is calculated using pretreated ultraviolet light electric signal by processor module.
4. the non-contact bow net arcing energy detection method according to claim 3 based on spectroscopic diagnostics, feature exist
In the calculation formula of arcing mean temperature in the step S4 are as follows:
In above formula, T is arcing mean temperature, λ1For the wavelength of fisrt feature spectral line optical signal, λ1=521.82nm, λ2It is second
The wavelength of characteristic spectral line optical signal, λ2=510.55nm, A1It is fisrt feature spectral line optical signal atom from high level to low-lying level
Transition probability, A2Transition probability for second feature spectral line optical signal atom from from high level to low-lying level, g1For fisrt feature spectral line
The statistical weight of optical signal high level, g2For the statistical weight of second feature spectral line optical signal high level,For fisrt feature spectrum
The irradiation intensity of linear light signal,For the irradiation intensity of second feature spectral line optical signal, k is Boltzmann constant, E1It is first
The excitation energy of characteristic spectral line optical signal high level, E2For the excitation energy of second feature spectral line optical signal high level.
5. the non-contact bow net arcing energy detection method according to claim 4 based on spectroscopic diagnostics, feature exist
In the acquisition methods of the irradiation intensity of the characteristic spectral line optical signal are as follows:
A, by standard sources, optical system for collecting, spectrometer, photoelectric conversion module, processor module, image module and PC machine according to
It is secondary to be placed on optical experiment bench；
B, so that the intensity of standard sources is changed by adjusting potentiometer, record the electricity of each photoelectric conversion module output
Pressure, and with spectrometer record each output voltage it is corresponding wavelength be 510.55nm and 521.82nm at the intensity of spectral line
Value；
C, the voltage-intensity curves at 510.55nm and 521.82nm are fitted by MATLABA, obtains characteristic spectral line optical signal
Irradiation intensity and voltage relational expression.
6. the non-contact bow net arcing energy detection method according to claim 5 based on spectroscopic diagnostics, feature exist
In the wavelength is the irradiation intensity of 510.55nm characteristic spectral line optical signal and wavelength is 521.82nm characteristic spectral line optical signal
Irradiation intensity are as follows:
Iλ1=0.0439V1 2-21.597V1-5001.5
In above formula, Iλ1It is the irradiation intensity of 510.55nm characteristic spectral line optical signal, V for wavelength1It is photoelectric conversion module in wavelength
Output voltage when for 510.55nm characteristic spectral line optical signal, Iλ2It is strong for irradiation that wavelength is 521.82nm characteristic spectral line optical signal
Degree, V2For output voltage of the photoelectric conversion module when wavelength is 521.82nm characteristic spectral line optical signal.
7. the non-contact bow net arcing energy detection method according to claim 3 based on spectroscopic diagnostics, feature exist
In the calculation formula of arcing irradiation intensity in the step S5 are as follows:
J=3.01 × 10-9l2P
In above formula, J is arcing irradiation intensity, and l is the distance of light source device for detecting distance, and P is radiant power.
8. the non-contact bow net arcing energy detection method according to claim 7 based on spectroscopic diagnostics, feature exist
In the calculation method of the radiant power are as follows: when detecting a certain arcing by non-contact bow net arcing energy testing apparatus
Its ultraviolet signal exported is carried out numerical integration in arcing section to the optical signal using processor module and obtains arcing
Radiant power P.
9. the non-contact bow net arcing energy detection method according to claim 8 based on spectroscopic diagnostics, feature exist
In the arcing section is the duration that optical signal is converted into electric signal.
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Application publication date: 20190621 |