CN105223149A - Measuring system and optical element thereof - Google Patents
Measuring system and optical element thereof Download PDFInfo
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- CN105223149A CN105223149A CN201510779180.2A CN201510779180A CN105223149A CN 105223149 A CN105223149 A CN 105223149A CN 201510779180 A CN201510779180 A CN 201510779180A CN 105223149 A CN105223149 A CN 105223149A
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Abstract
The invention discloses a kind of measuring system and optical element thereof, described measuring system comprises the measurement mechanism with light source, optical element, detecting unit, and wherein, the optical radiation that described light source sends enters testing sample through optical element, and detected unit receives; Described optical element is the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window that described body comprises the first plane window and is oppositely arranged with described first plane window, described radiation energy, goes out to inject testing sample from the second plane window through described predetermined sample by described first plane window.Measuring system of the present invention and optical element thereof, possess self-checking function, easy to use, and Consumer's Experience is better.
Description
Technical field
The present invention relates to a kind of sample analysis detection field, particularly a kind of measuring system and optical element thereof.
Background technology
Spectral technique can carry out analysis to sample and detect, its may be used for detecting comprise in gaseous state, liquid state, solid-state and two kinds and above potpourri physico-chemical property.Absorption spectrum is a kind of spectral technique that practicality is very strong, its ultimate principle is: supposing can under uncared-for prerequisite in the scattering process of light, by the testing sample of incident light by certain length, then measure the intensity of transmitted optical radiation, described transmitted light is defined as absorption relative to the decay of the intensity of incident light radiation.By can obtain the corresponding physico-chemical property of testing sample to light absorbing qualitative and quantitative analysis.The applicable field of spectral instrument manufactured and designed based on described absorption spectroscopy techniques is numerous, comprises the industries such as power plant, environmental protection, cement mill, petrochemical industry chemical industry, glass manufacture.
During the actual use of described spectral instrument, the light of a branch of certain frequency is radiated on testing sample, the medium in sample and Electromagnetic Field, the energy of media interior electromagnetic wave absorption radiation and quantized energy level transition occurs, transits to high level from low-lying level.Its energy that molecule (atom) the structure difference of different medium determines is differential also different, thus the frequency determining absorbable light is also different, by measuring wavelength and the intensity of absorbed light, the characteristic absorption spectrum of measured medium can be obtained, by carrying out qualitative and quantitative analysis to absorption spectrum, the information such as absolute concentration and absolute absorption cross section of molecule (atom) can be obtained.
In the industrial process of reality, after spectral instrument uses a period of time, may there is deviation in its measuring accuracy, and need regularly to its maintenance, judge whether its precision meets the demands, whether instrument works under rational state.Because existing spectral instrument does not exist biplane cavity space, cannot original position demarcate or original position demarcate inaccurate.The mode of existing accuracy of detection, normally gets off spectral instrument from field stripping, then it is carried out to the detection of a series of specialty.Such as, but because spectral instrument installation environment is usually more special, in tens chimneys that even hundreds of rice is high, itself quality is heavier again, is therefore disassembled the requirement that the mode carrying out detecting obviously can not meet user.
For this reason, be necessary to propose a kind of spectrum measurement instruments with self-checking function, to meet user's needs.
Further, in prior art, the optical element of sample cell directly directly contacts with surrounding air or sweep gas, and be subject to flow of cold air impact, tracing thermal-insulating is unstable, not thorough.Tracing thermal-insulating mode need be improved.
Summary of the invention
The object of this invention is to provide a kind of measuring system with self-checking function and optical element thereof, easy to use, Consumer's Experience is better.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize: a kind of measuring system, it comprises: the measurement mechanism with light source, optical element, detecting unit, wherein, the optical radiation that described light source sends is through optical element through testing sample, and detected unit receives; Described optical element is the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window that described body comprises the first plane window and is oppositely arranged with described first plane window, described optical radiation, goes out to inject testing sample from the second plane window through described predetermined sample by described first plane window.
In a preferred embodiment, the direction of propagation of described optical radiation after described optical element is constant.
In a preferred embodiment, described body is provided with opening, described set-up mode comprises welding, be tightly connected in one.
In a preferred embodiment, described opening comprises the first opening and the second opening, described body comprises first end face adjacent with described first plane window, the second plane window and the second end face, described first opening is arranged on described first end face, and described second opening is arranged on described second end face.
In a preferred embodiment, described predetermined sample comprises: the one in sweep gas, nitrogen, standard model.
In a preferred embodiment, the periphery of described optical element is also provided with heating member, for heating described optical element.
In a preferred embodiment, described heating member is arranged separately.
In a preferred embodiment, described measuring system also comprises the return module of inspection light path, the return module of described inspection light path is arranged in described measuring system light path in a movable manner, when described measuring system is tested, the return module of described inspection light path moves to precalculated position in light path; When described measuring system is measured, the return module of described inspection light path moves apart precalculated position in described light path.
A kind of optical element, it comprises: the transparent body of hollow, described body is provided with at least one opening; Predetermined sample can be equipped with in the body of described hollow; The second plane window that described transparent body comprises the first plane window and is oppositely arranged with described first plane window, the radiation energy that light source sends is by the predetermined sample of described first plane window in body, go out to inject testing sample from the second plane window, described optical radiation direction of propagation after described optical element is constant.
In a preferred embodiment, the periphery of described optical element is also provided with heating member, for heating described optical element.
The measuring system that the above embodiment of the application describes, by optical element being wherein set to the transparent body of hollow, the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window that described body comprises the first plane window and is oppositely arranged with described first plane window, described radiation energy passes through described first plane window through described predetermined sample, go out to inject testing sample from the second plane window, then data processing module is passed through, the light signal that described detecting unit receives is processed, and the predetermined information stored in the light signal after described process and memory module is compared, achieve the precision detecting described measurement mechanism.After described measuring system can realize self-inspection, when user uses, the data can fed back by data processing module judge whether the precision of measurement mechanism meets the demands, and easy to use, Consumer's Experience is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of measuring system in first embodiment of the invention;
Fig. 2 A is the front view of the measurement mechanism of a kind of measuring system in first embodiment of the invention;
Fig. 2 B is the vertical view of the measurement mechanism of a kind of measuring system in first embodiment of the invention;
Fig. 3 is the front view of the optical element of a kind of measuring system in first embodiment of the invention;
Fig. 4 is the vertical view of the optical element of a kind of measuring system in first embodiment of the invention;
Fig. 5 A is that in the embodiment of the present invention, a kind of optical element arranges schematic diagram;
Fig. 5 B is the paths schematic diagram of a kind of optical element inside in the embodiment of the present invention;
Fig. 6 A is that in the embodiment of the present invention, a kind of optical element arranges schematic diagram;
Fig. 6 B is the paths schematic diagram of a kind of optical element inside in the embodiment of the present invention;
In Fig. 7 second embodiment of the invention, a kind of measuring system is in the schematic diagram under measuring state;
In Fig. 8 second embodiment of the invention, a kind of measuring system is in the schematic diagram under test status.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is elaborated, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen in the application's claims limited range.
The object of this invention is to provide a kind of measuring system with self-checking function and optical element thereof, easy to use, Consumer's Experience is better.
Refer to Fig. 1 to Fig. 4.A kind of measuring system 10 that the embodiment of the present application provides can comprise: the measurement mechanism 1 with light source 12, optical element 14, detecting unit 15, wherein, the optical radiation that described light source 12 sends enters testing sample 11 through optical element 14, and detected unit 15 receives.Described optical element 14 is the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window 142 that described body comprises the first plane window 141 and is oppositely arranged with described first plane window 141, described radiation energy, goes out to inject testing sample 11 from the second plane window 142 through described predetermined sample by described first plane window 141.Memory module 2, it stores the predetermined information of described predetermined sample.Data processing module 3, processes for the light signal received by described detecting unit 15, and the light signal after described process and described predetermined information is compared, to detect the precision of described measurement mechanism 1.
In the present embodiment, the concrete form of described light source 12 can be selected according to the difference of the Detection Techniques used and request for utilization, and concrete its includes but not limited to any one or several combinations in laser, LED, xenon lamp, infrared light supply, super-radiation light source, SLED, wideband light source.The optical radiation that described light source 12 sends is successively through described Dichroic Optical Elements 13, optical element 14 form main optical path.
In the present embodiment, described measuring system 10 can also comprise Dichroic Optical Elements 13, and described Dichroic Optical Elements 13 can be arranged between described light source 12 and described optical element 14.Described Dichroic Optical Elements 13 has two logical light faces, is respectively the plane of incidence and exit facet, and described two logical light faces are non-parallel.The normal of optical radiation on the plane of incidence and exit facet that described light source 12 sends has angle, and described angle is greater than 0 degree.Light splitting is carried out in the optical radiation that light source 2 can send by described Dichroic Optical Elements 13.Concrete, described Dichroic Optical Elements 13 can be has at least two nonparallel wedges of logical optical plane.
The optical radiation that described light source 12 sends is successively through described Dichroic Optical Elements 13, optical element 14 form main optical path.Concrete, as shown in Figure 2 B, the optical radiation that light source 12 sends is transmitted to described Dichroic Optical Elements 13 along light path 20, then transmit from described Dichroic Optical Elements 13, be transmitted to described optical element 14 along light path 23, then transmit from described optical element 14, be transmitted to return optical element 6 along light path 24, after described return optical element 6 reflects, return along the direction paralleled with original light path.On described main optical path direction.Described main optical path is divided into input section, transition section and measuring section by described Dichroic Optical Elements 13, optical element 14.Described input section is the region between light source 12 to described Dichroic Optical Elements 13; Described transition section is the region between described Dichroic Optical Elements 13 to optical element 14; Described measuring section is the region between described optical element 14 to return optical element 6, and described measuring section position is provided with testing sample 11.Described main optical path Z forms reflected light path after being reflected by return optical element 6, and described reflected light path is parallel with main optical path with measuring section at transition section.Concrete, light path 24 forms the light path 25 paralleled with described light path 24 after described return optical element 6 reflects, when optical radiation is transmitted to described optical element 14 along light path 25, transmits from described optical element 14, be then transmitted to Dichroic Optical Elements 13 along light path 26.Described reflected light path and main optical path are nominal parallel at transition section with the parallel of measuring section, and that particularly ignores after rigging error, foozle equal error is opposing parallel.Along in described main optical path Z-direction, when distance L1 between described Dichroic Optical Elements 13 to optical element 14 regulates, or the second distance L2 between optical element 14 to return optical element 6 when regulating, reflected light path 25, with main optical path 23 keeping parallelism, and reflected light path 26 and main optical path 24 keeping parallelism, make sample measuring device 1 described in transition section and measuring section be positioned at the optical element of main optical path move along the direction of described main optical path time, any impact can not be had to whole light path, it can arrange distance between described Dichroic Optical Elements 13 to optical element 14 according to practical service environment, or the distance between optical element 14 to return optical element 6 is to adapt to different testing environments, thus whole sample measuring device 1 has good versatility.
In the present embodiment, described optical element 14 can be the transparent body of hollow, described body is provided with opening 140, described opening 140 is provided with seal 144 by dismountable mode, can be provided with predetermined sample in the body of described hollow; Described body comprises the first plane window 141 and second plane window 142 relative with described first plane window 141 that contact with testing sample 11, the radiation energy that light source 12 sends, by the predetermined sample of described first plane window 141 in body, enters testing sample 11 from the second plane window 142 injection.
In the present embodiment, described optical element 14 comprises the first plane window 141 and the second plane window 142, and described plane window can comprise parallel or nonparallel two plane surfaces.In one embodiment, described optical radiation direction of propagation after optical element 14 is constant.
The form of concrete optical element 14 refers to Fig. 5 A to Fig. 6 B.
Wherein, Fig. 5 A and 5B, for optical element a kind of in the embodiment of the present invention arranges the paths schematic diagram of schematic diagram and inside.Concrete, described optical element 14 can be single wedged window group, and namely described optical element 14 comprises two single wedged windows.As shown in Figure 5A, two windows with lozenges are parallel to each other placement, and light path 23, light path 24 can be paralleled with light path 25, light path 26 respectively.
Wherein, Fig. 6 A and 6B, for optical element a kind of in the embodiment of the present invention arranges the paths schematic diagram of schematic diagram and inside.Concrete, described optical element 14 can be double-wedge window group, and namely described optical element 14 comprises two double-wedge windows.As shown in Figure 6A, two windows with lozenges are parallel to each other placement, and light path 23, light path 24 can be paralleled with light path 25, light path 26 respectively.
Utilize the described optical radiation characteristic that the direction of propagation is constant after optical element 14, the attitude of relevant optical or the relativeness between optical element 14 and described Dichroic Optical Elements 13 can be adjusted arbitrarily along light radiation direction, thus increase the universality of light path, optimizing optical system, raising system light transmission rate, reduces optical noise.
In the present embodiment, the number of described opening 140 can be one, also can be multiple.When the number of described opening 140 is one, the outside of described 140 can arrange T-valve, and a road is used for inflation, and another road is used for exhaust.
In one embodiment, described opening 140 can comprise the first opening 1401 and the second opening 1402, described body comprises first end face 145 and second end face 146 adjacent with described first plane window 141, second plane window 142, described first end face 145 and described second end face 146 back to, described first opening 1401 is arranged on described first end face 145, and described second opening 1402 is arranged on described second end face 146.When being filled with predetermined sample in described optical element 14, can be filled with by described first opening 1401, and by described second opening 1402, remaining air be discharged, optimally remaining air is discharged, ensure the purity of pre-set gas, to ensure the precision detected.
The set-up mode of described opening 140 can comprise welding, be removably tightly connected in one.Such as, when the set-up mode of described opening is for welding, opening after being filled with predetermined sample, can being sealed by the mode of welding, leaks out to prevent described predetermined sample from described opening 140 by it.
In addition, when described opening 140 is arranged by the mode that removable seal connects, can contained be opening 140 is arranged a seal 144.Described seal 144 is arranged on described opening 140 by dismountable mode, to seal the gas in described optical element 14.What described dismountable mode was concrete can be plug-in, and described seal 144 can be interference fit with the described body with opening 140.In addition, described seal 144 can also for the described body with opening 140 for being threaded, stop-leak compound can be stamped at connection of thread, further auxiliary seal.In addition the fit system of the concrete form of described seal 144 and itself and body can also be other forms; one of ordinary skill in the art are under the technical spirit enlightenment of the application; also may make other change; as long as but its realize function and effect and the application same or similar, all should be covered by the application's protection domain.The material of described seal 144 can include but not limited to: the one in rubber, graphite, metal, plastics.Certainly, the material of described seal 144 also can be other form, and the application does not do concrete restriction at this.
In the present embodiment, described detecting unit 15 can receive main optical path and testing sample 11 interact after optical radiation signal.Such as, the absorption length of testing sample 11 can be detected.Described detecting unit 15 is electrically connected with described data processing module 3, can by the Signal transmissions that detects to data processing module 3.
In the present embodiment, described memory module 2 may be used for the predetermined information storing described predetermined sample.Described memory module 2 is electrically connected with described data processing module 3, and data processing module 3 can call the data in described memory module 2.
Described predetermined information can include but not limited to the parameter such as concentration, absorption length of predetermined sample in described optical element 14.Certainly, described predetermined information is not limited to foregoing description.One of ordinary skill in the art the application technical spirit enlightenment under, also may make other change, as long as but its realize function and effect and the application same or similar, all should be covered by the application's protection domain.
In the present embodiment, the light signal that described data processing module 3 may be used for described detecting unit 15 receives processes, and the light signal after described process and described predetermined information is compared, to detect the precision of described measurement mechanism 1.During use, after the absorption length of the testing sample 11 detected when detecting unit 15, above-mentioned data are sent to described data processing module 3 by it, described data processing module 3 is based on above-mentioned data and the parameter called in memory module 2, the concentration of tested gas can be determined, the concentration of the tested gas then determined by described data processing module 3 and the concentration of the actual tested gas recorded compare, if within the scope of target offset, then illustrate that detection system works in normal range, when exceeding target offset scope, then illustrate that detection system may break down, need to overhaul.Concrete, described target offset can be the scope of setting in described data processing module 3, as-5% to+5%.Certainly, the described target offset difference that can require according to actual measurement environment and measuring accuracy and setting respectively.
In the present embodiment, described predetermined sample is the known sample of key function or character.Described predetermined sample can be predetermined liquid, also can be predetermined sample; The state of described predetermined sample can be static, and can be flowing, the application do concrete restriction at this yet.In the present embodiment, described predetermined sample can include but not limited to: the one in sweep gas, nitrogen, standard model.Wherein, described standard model can be the sample for demarcating or verify the physico-chemical property such as wavelength, concentration of Given information, but is not limited to these samples.Concrete, such as, during oxygen determination gas, owing to containing a large amount of oxygen in air, can cause interference to measurement result, therefore, predetermined sample now can be nitrogen.
In a concrete embodiment, when the concentration of the predetermined sample in described optical element 14 is known, its absorption length can be determined by measurement, is also known quantity, and in addition, the absorption length of testing sample 11 also can obtain by measuring.When known can the concentration of predetermined sample, absorption length, testing sample 11 absorption length, according to by Lambert-Beer's law, by calculating, the concentration of tested gas can be determined.Concrete computation process, repeats no more herein.
In the present embodiment, by optical element 14 being wherein set to the transparent body of hollow, the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window 142 that described body comprises the first plane window 141 and is oppositely arranged with described first plane window 141, described radiation energy passes through described first plane window 141 through described predetermined sample, go out to inject testing sample 11 from the second plane window 142, then by data processing module 3, the light signal that described detecting unit 15 receives is processed, and the predetermined information stored in the light signal after described process and memory module 2 is compared, achieve the precision detecting described measurement mechanism 1.After described measuring system 10 can realize self-inspection, when user uses, the data can fed back by data processing module 3 judge whether the precision of measurement mechanism 1 meets the demands, and easy to use, Consumer's Experience is better.
In one embodiment, the periphery of described optical element 14 can also be provided with heating member.In the present embodiment, by arranging heating member in the periphery of described optical element 14, described optical element 14 can be made to heat on the whole more even, without temperature dead band.Concrete, described heating member can be independent of other heating member of measuring system.The well heater of optical element and the well heater of sample measuring cell can be separate, and the power of each heating member can set separately according to the temperature of temperature control object.When the power of described heating member can set according to the temperature of testing sample 11, it can regulate according to the temperature of described testing sample 11, thus under ensureing that described optical element 14 or predetermined gas can be in same environment temperature with testing sample 11.Improve heating effect simultaneously, reduce system heating power, improve reliability.Further, in prior art, the optical element of sample cell directly directly contacts with surrounding air or sweep gas, and be subject to flow of cold air impact, tracing thermal-insulating is unstable, not thorough.The predetermined sample gas of present embodiment do not flow or intermittent flow time, the temperature of optical element can be avoided by airflow influence.
The concrete form of described heating member includes but not limited to the well heater such as pottery, cast aluminium, and its type of heating includes but not limited to the type of heating such as radiation, convection current, conduction.
In another embodiment, the present embodiment additionally provides another kind of measuring system, refer to Fig. 7 to Fig. 8, with this first embodiment difference, the present embodiment is that described measuring system also comprises and checks the return module of light path (illustrating with dotted line frame in figure).Described measuring system duty comprises test status and measuring state, and when measuring system is tested, the return module of inspection light path moves to precalculated position in light path, realizes the checking functions such as demarcation, checking; When described measuring system carries out sample measurement, the return module of described inspection light path moves apart precalculated position in described light path, realizes sample physical and chemical index and measures.
Concrete, the concrete structure of described light path demarcating module with reference to the structure of the optical element 14 in last embodiment, can repeat no more herein.When measuring system 10 normally works, described light path demarcating module can be positioned at the top of optical path, does not affect measurement.When needing the precision to measuring system 10 to carry out timing signal, light path demarcating module moves on main optical path, completes the demarcation to measuring system 10.Concrete timing signal, the optical radiation that described light source 12 sends is successively through optical element 14, light path demarcating module and testing sample.Then by data processing module 3, the light signal that described detecting unit 15 receives is processed, and the predetermined information stored in the light signal after described process and memory module 2 is compared, achieve the precision detecting described measurement mechanism 1.After described measuring system 10 can realize self-inspection, when user uses, the data can fed back by data processing module 3 judge whether the precision of measurement mechanism 1 meets the demands, and easy to use, Consumer's Experience is better.
Refer to Fig. 3 to Fig. 6 B.A kind of optical element 14 is additionally provided in the application's embodiment, described optical element 14 can be the transparent body of hollow, described body is provided with opening 140, described opening 140 is provided with seal 144 by dismountable mode, in the body of described hollow, predetermined sample can be provided with; Described body comprises the first plane window 141 and second plane window 142 relative with described first plane window 141 that contact with testing sample, the radiation energy that light source 12 sends, by the predetermined sample of described first plane window 141 in body, enters testing sample 11 from the second plane window 142 injection.
In the present embodiment, described optical element 14 comprises the first plane window 141 and the second plane window 142, and described plane window can comprise parallel or nonparallel two plane surfaces.In one embodiment, described optical radiation direction of propagation after optical element 14 is constant.
The form of concrete optical element 14 refers to Fig. 5 A to Fig. 6 B.
Wherein, Fig. 5 A and 5B, for optical element a kind of in the embodiment of the present invention arranges the paths schematic diagram of schematic diagram and inside.Concrete, described optical element 14 can be single wedged window group, and namely described optical element 14 comprises two single wedged windows.As shown in Figure 5A, two windows with lozenges are parallel to each other placement, and light path 23, light path 24 can be paralleled with light path 25, light path 26 respectively.
Wherein, Fig. 6 A and 6B, for optical element a kind of in the embodiment of the present invention arranges the paths schematic diagram of schematic diagram and inside.Concrete, described optical element 14 can be double-wedge window group, and namely described optical element 14 comprises two double-wedge windows.As shown in Figure 6A, two windows with lozenges are parallel to each other placement, and light path 23, light path 24 can be paralleled with light path 25, light path 26 respectively.
Utilize the described optical radiation characteristic that the direction of propagation is constant after optical element 14, the attitude of relevant optical or the relativeness between optical element 14 and described Dichroic Optical Elements 13 can be adjusted arbitrarily along light radiation direction, thus increase the universality of light path, optimizing optical system, raising system light transmission rate, reduces optical noise.
In the present embodiment, the number of described opening 140 can be one, also can be multiple.When the number of described opening 140 is one, the outside of described 140 can arrange T-valve, and a road is used for inflation, and another road is used for exhaust.
In one embodiment, described opening 140 can comprise the first opening 1401 and the second opening 1402, described body comprises first end face 145 and second end face 146 adjacent with described first plane window 141, second plane window 142, described first end face 145 and described second end face 146 back to, described first opening 1401 is arranged on described first end face 145, and described second opening 1402 is arranged on described second end face 146.When being filled with predetermined sample in described optical element 14, can being filled with by described first opening 1401, and by described second opening 1402, remaining air being discharged.Optimally to be discharged by remaining air, ensure the purity of pre-set gas, to ensure the precision detected.
The set-up mode of described opening 140 can comprise welding, be removably tightly connected in one.Such as, when the set-up mode of described opening is for welding, opening after being filled with predetermined sample, can being sealed by the mode of welding, leaks out to prevent described predetermined sample from described opening 140 by it.
In addition, when described opening 140 is arranged by the mode that removable seal connects, can contained be opening 140 is arranged a seal 144.Described seal 144 is arranged on described opening 140 by dismountable mode, to seal the gas in described optical element 14.What described dismountable mode was concrete can be plug-in, and described seal 144 can be interference fit with the described body with opening 140.In addition, described seal 144 can also for the described body with opening 140 for being threaded, stop-leak compound can be stamped at connection of thread, further auxiliary seal.In addition the fit system of the concrete form of described seal 144 and itself and body can also be other forms; one of ordinary skill in the art are under the technical spirit enlightenment of the application; also may make other change; as long as but its realize function and effect and the application same or similar, all should be covered by the application's protection domain.The material of described seal 144 can include but not limited to: the one in rubber, graphite, metal, plastics.Certainly, the material of described seal 144 also can be other form, and the application does not do concrete restriction at this.
In one embodiment, the periphery of described optical element 14 can also be provided with heating member.In the present embodiment, by arranging heating member in the periphery of described optical element 14, described optical element 14 can be made to heat on the whole more even, without temperature dead band.Concrete, described heating member can be independent of other heating member of measuring system.The power of described heating member can set according to the temperature of testing sample.When the power of described heating member can set according to the temperature of testing sample, it can regulate according to the temperature of described testing sample, thus under the predetermined sample ensureing in described optical element 14 can be in same environment temperature with testing sample, and then the reference value as the pre-set gas demarcated can be made higher.The concrete form of described heating member includes but not limited to the well heater such as pottery, cast aluminium, and its type of heating includes but not limited to the type of heating such as radiation, convection current, conduction.
In present embodiment, by optical element 14 being wherein set to the transparent body of hollow, the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window 142 that described body comprises the first plane window 141 and is oppositely arranged with described first plane window 141, described radiation energy passes through described first plane window 141 through described predetermined sample, go out to inject testing sample from the second plane window 142, then data processing module is passed through, the light signal received by detecting unit processes, and the predetermined information stored in the light signal after described process and memory module is compared, the object detecting measurement mechanism precision can be realized.
The foregoing is only several embodiments of the present invention, although the embodiment disclosed by the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, is not intended to limit the present invention.Any those skilled in the art; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done on the formal of embodiment and details; but scope of patent protection of the present invention, the scope that still must define with appended claims is as the criterion.
Claims (10)
1. a measuring system, is characterized in that, it comprises:
Have the measurement mechanism of light source, optical element, detecting unit, wherein, the optical radiation that described light source sends is through optical element through testing sample, and detected unit receives;
Described optical element is the transparent body of hollow, predetermined sample can be equipped with in described body, the second plane window that described body comprises the first plane window and is oppositely arranged with described first plane window, described optical radiation, goes out to inject testing sample from the second plane window through described predetermined sample by described first plane window.
2. measuring system as claimed in claim 1, it is characterized in that, the direction of propagation of described optical radiation after described optical element is constant.
3. measuring system as claimed in claim 1 or 2, is characterized in that, described body is provided with opening, described set-up mode comprises welding, be tightly connected in one.
4. measuring system as claimed in claim 3, it is characterized in that, described opening comprises the first opening and the second opening, described body comprises first end face adjacent with described first plane window, the second plane window and the second end face, described first opening is arranged on described first end face, and described second opening is arranged on described second end face.
5. measuring system as claimed in claim 1 or 2, it is characterized in that, described predetermined sample comprises: the one in sweep gas, nitrogen, standard model.
6. measuring system as claimed in claim 1 or 2, it is characterized in that, the periphery of described optical element is also provided with heating member, for heating described optical element.
7. measuring system as claimed in claim 6, it is characterized in that, described heating member is arranged separately.
8. measuring system as claimed in claim 1 or 2, it is characterized in that, described measuring system also comprises the return module of inspection light path, the return module of described inspection light path is arranged in described measuring system light path in a movable manner, when described measuring system is tested, the return module of described inspection light path moves to precalculated position in light path; When described measuring system is measured, the return module of described inspection light path moves apart precalculated position in described light path.
9. an optical element, is characterized in that, it comprises: the transparent body of hollow, described body is provided with at least one opening; Predetermined sample can be equipped with in the body of described hollow;
The second plane window that described transparent body comprises the first plane window and is oppositely arranged with described first plane window, the radiation energy that light source sends is by the predetermined sample of described first plane window in body, go out to inject testing sample from the second plane window, described optical radiation direction of propagation after described optical element is constant.
10. optical element as claimed in claim 9, it is characterized in that, the periphery of described optical element is also provided with heating member, for heating described optical element.
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| CN201510779180.2A CN105223149A (en) | 2015-11-13 | 2015-11-13 | Measuring system and optical element thereof |
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| CN (1) | CN105223149A (en) |
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