CN102636262A - Multi-channel light splitter and mid-infrared analyzing system with same - Google Patents
Multi-channel light splitter and mid-infrared analyzing system with same Download PDFInfo
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- CN102636262A CN102636262A CN2012100706576A CN201210070657A CN102636262A CN 102636262 A CN102636262 A CN 102636262A CN 2012100706576 A CN2012100706576 A CN 2012100706576A CN 201210070657 A CN201210070657 A CN 201210070657A CN 102636262 A CN102636262 A CN 102636262A
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Abstract
The invention relates to a multi-channel light splitter. The multi-channel light splitter comprises a plurality of sampling channels and a Raman spectrum light splitting device, wherein the sampling channels are all provided with a sampling electromagnetic valve and a sampling channel control device. The multi-channel light splitter is characterized in that the sampling channel control device comprises a power supply module, a programmable controller and a relay for controlling the electromagnetic valve of the sampling channels; the power supply end of the programmable controller and the input end of the power supply module are electrically connected to an alternating current (AC) power supply; a plurality of control signal output ends of the programmable controller are correspondingly connected with coils of the relay; switches of the relay are connected between the output end of the power supply module and the electromagnetic valve on the sampling channel in one-to-one correspondence; and the programmable controller controls the turning on or turning off of the corresponding electromagnetic valve through controlling the switch of the relay. The device provided by the invention can be used for improving the accuracy degree and precision of detection results, and is especially applicable to detecting physical and chemical indicators of various samples of various fuel oils such as gasoline, diesel and aviation kerosene.
Description
Technical field
The present invention relates to a kind of spectral measurement apparatus, more particularly, the present invention relates to a kind of optical splitter with hyperchannel handoff functionality; Have this optical splitter and be applicable to the multi-component automatic analysis of fuel oil as the middle infrared analysis system of detecting device.
Background technology
Use spectrometry, open score learns a skill and branch spectroscopy method is the technology that some compound exists in a kind of definite sample.This technology is come the existence and the concentration thereof of given element in the working sample or compound through the energy interaction with sample.Employed equipment is known as spectrometer or spectrograph.Spectroscopy is through carried out the main method of material when identifying by the spectrum that material sent or absorbed of forming sample in physical chemistry or the analytical chemistry.Through using the data that spectroscopy obtained to be called as spectrum.Spectrum is the drawing of the detected energy intensity of the wavelength (quality, momentum or frequency) with respect to energy.Can use spectrum to find relevant atom and molecular entergy level, molecular geometry configuration, chemical bond, the interaction of molecule and the information of correlated process.Can use spectrum to identify the composition in (qualitative analysis) sample.Also can come the content (quantitative test) of material in the working sample through using spectrum.
Wherein near-infrared spectrum analysis is owing to have that analysis speed is fast, cost is low, greenly analyze and be fit to advantage such as online detection, thereby all obtained using widely in all trades and professions.For example the near-infrared spectrum technique infrared detection technology can accurately determine the index such as octane value, anti-knock index, benzene, aromatic hydrocarbons, alkene, oxygen content of various motor petrol product oils and base oil.Traditionally, the infrared spectrum most important applications is that the structure of compound is identified, compares through the relation of spectrogram and molecular structure and with the standard spectrogram, can confirm the structure of compound.In recent years, along with the development of instrument manufacturing technology, chemometrics method and computing machine, infrared spectrum also was used for fields such as on-the site analysis and online process analysis procedure analysis more and more.For different oil products, generally adopt the pipeline automatic cleaning technology at present, even like this, the mutual pollution of pipeline is also unavoidable, thus precision and repeatability that influence is measured.Not only volume is big for the multiple dispersion type light-splitting device that uses in the above-mentioned in addition technology, cost is high, and light quantity reduces poor signal to noise.
Summary of the invention
In order to solve the above-mentioned technical matters that exists in the prior art; The object of the present invention is to provide in a kind of hyperchannel optical splitter and the infrared analysis system; Use device of the present invention can improve the accuracy and the precision of testing result, device of the present invention is applicable to the for example mensuration of the physical and chemical index of various samples such as gasoline, diesel oil, aviation kerosene of various fuel oil.
To achieve these goals; First aspect of the present invention relates to a kind of hyperchannel optical splitter; Have gasoline sampling passage, diesel oil sampling passage, aviation kerosene sampling passage and Raman spectrum light-dividing device; Said sampling passage all is equipped with sampling solenoid valve and sampling channel control device; It is characterized in that this sampling channel control device comprises power module, Programmable Logic Controller, is used to control the relay of the solenoid valve of sampling passage; The power end of said Programmable Logic Controller and the input end of said power module all are electrically connected to AC power; A plurality of control signal output ends of said Programmable Logic Controller and the corresponding connection of the coil of relay, the switch of said relay connect one to one between the solenoid valve on said power module outlet and each the sampling passage, and said Programmable Logic Controller is through the conducting or the shutoff of the switch control respective electrical magnet valve of pilot relay.
Preferably, to have wavelength be the light source portion of the near infrared semiconductor laser diode of 3000nm-6000nm as light source to described Raman spectrum light-dividing device; With carry out the diffraction grating of beam split and be used to detect light accepting part with the sample chamber of light source irradiation fuel oil sample and to the Raman diffused light that the fuel oil sample takes place by the multichannel light detector of the Raman diffused light of this diffraction grating beam split.
Preferably, said multichannel light detector is the photodetector that Ge, InGaAs or Si constitute.
Preferably, said light source portion also comprises the spectroscope that the light beam of light source is divided into sample beam and reference beams.
Preferably, said light accepting part also comprises the filtering apparatus of from the light of sample, removing the wavelength composition identical with exciting light.
Preferably, said filtering apparatus is to have to make the incentive optical wavelength composition see through and be removed the bandpass optical filter of the characteristic that reflects wavelength components in addition.
Preferably, described hyperchannel optical splitter is applicable to the mensuration of the physical and chemical index of gasoline, diesel oil, aviation kerosene sample.
Second aspect of the present invention relates to a kind of middle infrared analysis system; It comprises the hyperchannel optical splitter; Described hyperchannel optical splitter has gasoline sampling passage, diesel oil sampling passage, aviation kerosene sampling passage and Raman spectrum light-dividing device; Said sampling passage all is equipped with sampling solenoid valve and sampling channel control device; It is characterized in that this sampling channel control device comprises power module, Programmable Logic Controller, is used to control the relay of the solenoid valve of sampling passage; The power end of said Programmable Logic Controller and the input end of said power module all are electrically connected to AC power; A plurality of control signal output ends of said Programmable Logic Controller and the corresponding connection of the coil of relay, the switch of said relay connect one to one between the solenoid valve on said power module outlet and each the sampling passage, and said Programmable Logic Controller is through the conducting or the shutoff of the switch control respective electrical magnet valve of pilot relay; It is the light source portion of the near infrared semiconductor laser diode of 3000nm-6000nm as light source that described Raman spectrum light-dividing device has wavelength; With carry out the diffraction grating of beam split and be used to detect light accepting part with the sample chamber of light source irradiation fuel oil sample and to the Raman diffused light that the fuel oil sample takes place by the multichannel light detector of the Raman diffused light of this diffraction grating beam split; With and data handling machine, the detected intensity with the exciting light composition in this spectrophotometric spectra when said data handling machine has Raman scattering light intensity that the spectrophotometric spectra that detects according to the photodetector of above-mentioned light accepting part obtains specified wavelength as measured value is the function of this measured value of benchmark correction.
Preferably, described middle infrared analysis system is applicable to the mensuration of the physical and chemical index of gasoline, diesel oil, aviation kerosene sample.
Compared with prior art, the present invention has the following advantages:
1. hyperchannel optical splitter of the present invention is provided with solenoid valve on the passage between each sample channel; On off state through the solenoid valve on a plurality of sampling passages of Controlled by Programmable Controller; Carry out the sampling of sample; Thereby can realize that different analysis of oil is realized by separate sense channel, improve precision and the repeatability measured.
2. other hyperchannel optical splitter of the present invention adopts the Raman spectrum spectral measurement apparatus, thereby is particularly suitable for the material composition of trace in the fuel oil component, can realize with low cost carry out at a high speed, high sensitivity, high precision and the measurement of multinomial purpose.
Description of drawings
Fig. 1 is the structure principle chart of hyperchannel optical splitter of the present invention;
Fig. 2 is the structural representation of sampling channel control device of the present invention;
Fig. 3 is the arrangement plan of Raman spectrum light-dividing device of the present invention;
The represented implication of each Reference numeral is respectively among the figure: the 10-light source; 12-light-resource fousing lens; The 14-semi-transparent semi-reflecting lens; The 16-condenser lens; The 30-condenser lens; The 32-condenser lens; 40-dim light light filter; The 42-catoptron; The 44-bandpass optical filter; The 46-semi-transparent semi-reflecting lens; The 50-sample; The 52-entrance slit; 60-comprises the sample light of Raman scattering and Ruili scattering; The 62-Raman diffused light; 64-Ruili scattered light; 70-sees through focusing catoptron; The 72-bandpass optical filter; 74-beam cut-off device.
Embodiment
Below will combine accompanying drawing and specific embodiment that technical scheme of the present invention is done further explanation.
In the hyperchannel optical splitter of the embodiment of the invention; On the passage between a plurality of sampling passages and the Raman spectrum light-dividing device, solenoid valve is set; Through Controlled by Programmable Controller control on a plurality of passages and Raman spectrum light-dividing device measuring-signal output loop on the open and close state of solenoid valve, carry out the sample sampling.
Fig. 1 shows the structure principle chart of the hyperchannel optical splitter that the embodiment of the invention provides.With reference to Fig. 1, all with the sampling passage that has between the Raman spectrum light-dividing device separately, the Raman spectrum light-dividing device is used to detect the physical and chemical index of above-mentioned a plurality of samples for gasoline sample, diesel samples and aviation kerosene sample.First solenoid valve 1 that on the sampling passage between gasoline sample and the Raman spectrum light-dividing device, is provided with as shown in Figure 1; On the sampling passage between diesel samples and the Raman spectrum light-dividing device, be provided with second solenoid valve 2; On the sampling passage between aviation kerosene sample and the Raman spectrum light-dividing device, be provided with the 3rd solenoid valve 3; Sampling channel control device is connected with above-mentioned three solenoid valves; Control the conducting or the shutoff of first solenoid valve 1, second solenoid valve 2, the 3rd solenoid valve 3, and then control the sampling between three evaporators and the Raman spectrum light-dividing device.
Fig. 2 shows the structural principle of sampling channel control device among Fig. 1; Comprise power module, Programmable Logic Controller, a plurality of relay that is used to control the solenoid valve on the sampling passage; The power end of Programmable Logic Controller and the input end of power module all are electrically connected to AC power; The a plurality of control signal output ends of Programmable Logic Controller and coil J1, J2, the J3 of relay connect one to one; The switch J1-1 of a plurality of relays, J2-1, J3-1 connect one to one between power module outlet and a plurality of solenoid valve E1, E2, E3, Programmable Logic Controller through pilot relay switch conduction or turn-off the conducting or the shutoff of control electromagnetic valve.
Power module is used for converting alternating current into alternating current that system size is fit to; First control signal output ends of Programmable Logic Controller is connected with the coil J1 of first relay; The switch J1-1 of first relay is connected between power module 31 output terminals and the first solenoid valve E1; Programmable Logic Controller is controlled the switch J1-1 conducting or the shutoff of first relay through its first control signal output ends, and then controls conducting or the shutoff of the first solenoid valve E1; Second control signal output ends of Programmable Logic Controller is connected with the coil J2 of second relay; The switch J2-1 of the second relay SG2 is connected between the power module outlet and the second solenoid valve E2; Programmable Logic Controller is controlled the switch J2-1 conducting or the shutoff of second relay through its second control signal output ends, and then controls conducting or the shutoff of the second solenoid valve E2; The 3rd control signal output ends of Programmable Logic Controller is connected with the coil J3 of the 3rd relay; The switch J3-1 of the 3rd relay is connected between AC-AC power module 31 output terminals and the 3rd solenoid valve E3; Programmable Logic Controller is controlled the switch J3-1 conducting or the shutoff of the 3rd relay through its 3rd control signal output ends, and then controls conducting or the shutoff of the 3rd solenoid valve EV3.
Fig. 3 is the arrangement plan of Raman spectrum light-dividing device of the present invention, and described Raman spectrum light-dividing device has and sees through and remove the incentive optical wavelength composition and reflect the filtering apparatus of the bandpass optical filter of Raman scattering light component as light accepting part; Bandpass optical filter is configured in minute surface one side that sees through focusing catoptron, at the side configuration beam cut-off device relative with seeing through focusing catoptron.The light that comprises the sample of Raman diffused light and Ruili scattered light is incided on the bandpass optical filter from going into perforation through the back side of focusing catoptron through it by condenser lens focusing back.At bandpass optical filter, absorbed by the beam cut-off device behind the light transmission of Ruili, Raman diffused light reflection back is focused on by the reflecting surface that sees through focusing catoptron, sews up from inlet through semi-transparent semi-reflecting lens to be mapped on the light-splitting device.
The infrared analysis system comprises hyperchannel optical splitter and data handling machine in of the present invention, and the detected intensity with the exciting light composition in this spectrophotometric spectra when said data handling machine has Raman scattering light intensity that the spectrophotometric spectra that detects according to the photodetector of above-mentioned light accepting part obtains specified wavelength as measured value is the function of this measured value of benchmark correction.
Claims (9)
1. hyperchannel optical splitter; Have gasoline sampling passage, diesel oil sampling passage, aviation kerosene sampling passage and Raman spectrum light-dividing device; Said sampling passage all is equipped with sampling solenoid valve and sampling channel control device; It is characterized in that this sampling channel control device comprises power module, Programmable Logic Controller, is used to control the relay of the solenoid valve of sampling passage; The power end of said Programmable Logic Controller and the input end of said power module all are electrically connected to AC power; A plurality of control signal output ends of said Programmable Logic Controller and the corresponding connection of the coil of relay, the switch of said relay connect one to one between the solenoid valve on said power module outlet and each the sampling passage, and said Programmable Logic Controller is through the conducting or the shutoff of the switch control respective electrical magnet valve of pilot relay.
2. the described hyperchannel optical splitter of claim 1 is characterized in that it is the light source portion of the near infrared semiconductor laser diode of 3000nm as light source that described Raman spectrum light-dividing device has wavelength; With carry out the diffraction grating of beam split and be used to detect light accepting part with the sample chamber of light source irradiation fuel oil sample and to the Raman diffused light that the fuel oil sample takes place by the multichannel light detector of the Raman diffused light of this diffraction grating beam split.
3. the described hyperchannel optical splitter of claim 2 is characterized in that said multichannel light detector is the photodetector that Ge, InGaAs or Si constitute.
4. the described hyperchannel optical splitter of claim 2 is characterized in that said light source portion also comprises the spectroscope that the light beam of light source is divided into sample beam and reference beams.
5. the described hyperchannel optical splitter of claim 2 is characterized in that said light accepting part also comprises the filtering apparatus of from the light of sample, removing the wavelength composition identical with exciting light.
6. the described hyperchannel optical splitter of claim 5 is characterized in that said filtering apparatus is to have to make the incentive optical wavelength composition see through and be removed the bandpass optical filter of the characteristic that reflects wavelength components in addition.
7. each described hyperchannel optical splitter of claim 1-6 is characterized in that described hyperchannel optical splitter is used for the mensuration of the physical and chemical index of gasoline, diesel oil, aviation kerosene sample.
8. infrared analysis system in a kind; It is characterized in that comprising the hyperchannel optical splitter; Described hyperchannel optical splitter has gasoline sampling passage, diesel oil sampling passage, aviation kerosene sampling passage and Raman spectrum light-dividing device; Said sampling passage all is equipped with sampling solenoid valve and sampling channel control device; It is characterized in that this sampling channel control device comprises power module, Programmable Logic Controller, is used to control the relay of the solenoid valve of sampling passage; The power end of said Programmable Logic Controller and the input end of said power module all are electrically connected to AC power; A plurality of control signal output ends of said Programmable Logic Controller and the corresponding connection of the coil of relay, the switch of said relay connect one to one between the solenoid valve on said power module outlet and each the sampling passage, and said Programmable Logic Controller is through the conducting or the shutoff of the switch control respective electrical magnet valve of pilot relay; It is the light source portion of the near infrared semiconductor laser diode of 3000nm-6000nm as light source that described Raman spectrum light-dividing device has wavelength; With carry out the diffraction grating of beam split and be used to detect light accepting part with the sample chamber of light source irradiation fuel oil sample and to the Raman diffused light that the fuel oil sample takes place by the multichannel light detector of the Raman diffused light of this diffraction grating beam split; With and data handling machine, the detected intensity with the exciting light composition in this spectrophotometric spectra when said data handling machine has Raman scattering light intensity that the spectrophotometric spectra that detects according to the photodetector of above-mentioned light accepting part obtains specified wavelength as measured value is the function of this measured value of benchmark correction.
9. the described middle infrared analysis system of claim 8 is characterized in that described middle infrared analysis system is applicable to the mensuration of the physical and chemical index of gasoline, diesel oil, aviation kerosene sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210070657.6A CN102636262B (en) | 2012-03-19 | 2012-03-19 | Multi-channel light splitter and mid-infrared analyzing system with same |
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| CN201210070657.6A CN102636262B (en) | 2012-03-19 | 2012-03-19 | Multi-channel light splitter and mid-infrared analyzing system with same |
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| CN102636262A true CN102636262A (en) | 2012-08-15 |
| CN102636262B CN102636262B (en) | 2014-02-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111328373A (en) * | 2017-11-07 | 2020-06-23 | 株式会社岛津制作所 | Infrared spectrophotometer accessory |
| CN113324925A (en) * | 2021-05-18 | 2021-08-31 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Optical fiber signal receiving device and pipeline early warning system |
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| CN113324925A (en) * | 2021-05-18 | 2021-08-31 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Optical fiber signal receiving device and pipeline early warning system |
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