CN102288566A - Portable multifunctional analyzer and testing method thereof - Google Patents
Portable multifunctional analyzer and testing method thereof Download PDFInfo
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- CN102288566A CN102288566A CN2011102168126A CN201110216812A CN102288566A CN 102288566 A CN102288566 A CN 102288566A CN 2011102168126 A CN2011102168126 A CN 2011102168126A CN 201110216812 A CN201110216812 A CN 201110216812A CN 102288566 A CN102288566 A CN 102288566A
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Abstract
The invention provides a portable multifunctional analyzer. The portable multifunctional analyzer comprises a circuit board, a plurality of surface mounted light-emitting components, a plurality of the surface mounted light-sensing components, a sample pool cup fixing frame and a programmable electronic system, wherein the plurality of surface mounted light-emitting components are arranged on the circuit board; the plurality of the surface mounted light-sensing components are arranged on the circuit board; the sample pool cup fixing frame is fixed with the circuit board; a transparent sample pool cup is arranged in the middle of the fixing frame and is used for accommodating a sample pool; the sample pool cup fixing frame also comprises a plurality of optical reflective surfaces which are used for reflecting light transmitted by the surface mounted light-sensing components into the sample pool and reflecting the light passing through the sample pool into the surface mounted light-sensing components to form a plurality of test light paths; and the programmable electronic system is connected with the circuit board and is used for controlling and reading the light-emitting components and the light-sensing components. The invention also provides a testing method of the portable multifunctional analyzer. In the handheld portable analyzer, one optical component has multiple functions and has strong calculation and control functions, so that multiple functions of the optical component can be realized and multi-component analysis can be realized.
Description
Technical field
The present invention relates to a kind of portable multi-function analyser, more particularly, relate to a kind of hand-held analyzer with colorimetric spectrum analysis, fluorescence analysis and analysis of scattering multi-functional.
Background technology
Handheld portable colorimetric spectrum analysis instrument and portable formula fluorescence analyser are widely used in the analysis of the biological and chemical parameter of water in industry and the environment scene respectively.The user does not need water sample is delivered to the laboratory, just can obtain the biological and chemical parameter in many water when sampling with the handheld portable analyser.For example, the iron in the water, copper, lead, the concentration of chlorine residue.These analysers adopt light emitting diode and light sensitive diode as light source and luminous intensity measurement element mostly, because the restriction of handheld portable analyser size and weight, the general light emitting diode that all can only hold limited several wavelength, this has just limited the usable range of handheld portable analyser.When the on-the-spot use of water treatment hand-held analyzer, run at adding reagent after a few minutes through regular meeting, the analyser display density surpasses sensing range and can not get any reading, and the user must estimate extension rate, and dilute sample remeasures.Can lose time like this and chemical reagent.In general, there are one or more absorption peaks in a certain detected material, in order to reduce the detection lower limit, generally can select the maximum absorption wavelength of light emitting diode wavelength near this material.The shortcoming of doing like this is to reduce upper limit of detection, makes sensing range narrow.For example, the DR890 of U.S.'s Hash (Hach) company has only three light emitting diodes, the colorimetric spectrum analysis of many materials can not carry out at the optimization wavelength place of this material, this detection lower limit that makes this handheld portable analyser is than laboratory spectrum analysis instrument height, and upper limit of detection is lower than laboratory spectrum analysis instrument.
In addition, existing handheld portable analyser generally only has simple function, and the colorimetric spectrum analysis can only be used for doing colorimetric analysis, and fluorescence analyser can only be done fluorescence analysis.Existing handheld portable analyser also lacks necessary computing function, generally can not scan a plurality of wavelength simultaneously, carries out many component analysiss with a plurality of absorbances.
Summary of the invention
The objective of the invention is to propose a kind of a plurality of wavelength that have, bigger sensing range, the handheld portable analyser that has multiple analysis function and computational analysis function simultaneously.
The present invention proposes a kind of portable multi-function analyser, comprising: a circuit board; A plurality of surface mounted light-emitting components that are installed on the circuit board; A plurality of surface mounted photo-sensitive cells that are installed on the circuit board; One with the fixing sample cell cup fixed mount of described circuit board position, the fixed mount middle part is a transparent sample pond cup, is used for holding a sample cell; Also comprise a plurality of optical reflection faces on the sample cell cup fixed mount, the light reflection that surface mounted light-emitting component is sent enters sample cell, will enter surface mounted photo-sensitive cell through the light reflection of sample cell, forms a plurality of optical system for testing; And a programmable electronic system, be connected with circuit board, light-emitting component and photo-sensitive cell are controlled and read.
Preferably, in the described optical system for testing a plurality of surface mounted light-emitting components are arranged.
Preferably, in the described optical system for testing a plurality of surface mounted photo-sensitive cells are arranged.
Preferably, have optical filter before the surface mounted photo-sensitive cell, carry out fluorescence analysis simultaneously in colorimetric analysis.
Wherein, by regulating the size of light-emitting component input current, the control output intensity.
Wherein, regulate output by sense of control optical element gain multiple.
Wherein, programmable electronic system can convert light-emitting component to the photo-sensitive cell use.
The present invention also proposes a kind of method of testing of portable multi-function analyser, comprises the steps:
1) whether in given range, selects the optimum analysis wavelength according to the absorbance of a plurality of wavelength of analyte;
2) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the electric current that increases light emitting diode increases analyte concentration sensing range so that allow light sensitive diode detect enough transmitted lights;
3) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that increases light sensitive diode increases analyte concentration sensing range so that allow light sensitive diode detect enough transmitted lights;
4) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, increase the electric current of light emitting diode and increase the gain multiple of light sensitive diode simultaneously, increase analyte concentration sensing range so that allow light sensitive diode detect enough transmitted lights;
5) whether surpass a certain given upper limit according to analyte in the fluorescence intensity of certain specific wavelength, the electric current that reduces excitation source increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
6) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that reduces photo-sensitive cell increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
7) whether be lower than a certain given lower limit according to analyte in the fluorescence intensity of certain specific wavelength, increase the electric current of excitation source and increase the gain multiple of photo-sensitive cell simultaneously, increase analyte concentration sensing range so that allow photo-sensitive cell detect enough fluorescence;
8) according to analyte at the absorbance of emission wavelength and the absorbance of excitation wavelength, and the scattering strength at some wavelength of water sample, the result revises to fluorescence analysis;
9) according to the scattering strength of analyte at one or more wavelength, the contrast colors analysis result is proofreaied and correct.
Wherein, with the light intensity of a plurality of photo-sensitive cells measurements that are installed in different angles via the water sample scattering, the while measuring samples is in the scattering strength of a certain wavelength when colorimetric analysis and fluorescence analysis.
Wherein, with the light intensity of a plurality of photo-sensitive cells measurements that are installed in different angles via the water sample scattering, the turbidity of while measuring samples when colorimetric analysis and fluorescence analysis.
The present invention uses surface mounted light emitting diode and surface mounted light sensitive diode, also can use traditional plug-in light emitting diode in case of necessity, or with do rationally to distribute at three dimensions with the oval light emitting diode of traditional 3mm or 5mm, make handheld portable analyser of the present invention can have colorimetric analysis wavelength more than ten.In addition, before the part light sensitive diode of handheld portable analyser of the present invention optical filter is housed, this makes handheld portable analyser of the present invention can be used for carrying out fluorescence analysis.In handheld portable analyser of the present invention, an optical element often has a plurality of functions, has powerful calculating and control function simultaneously, so not only can realize the multifunction of optical element, can also realize many component analysiss.
Description of drawings
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Fig. 1 is provided with distribution plan for light-emitting component among hand-held analyzer first embodiment of the present invention and photo-sensitive cell;
Fig. 2 is a hand-held analyzer optical system for testing principle schematic of the present invention;
Fig. 3 is a hand-held analyzer three-dimensional structure diagram of the present invention;
Fig. 4 is provided with distribution plan for light-emitting component among hand-held analyzer second embodiment of the present invention and photo-sensitive cell;
Fig. 5 is a hand-held analyzer circuit theory synoptic diagram of the present invention;
Fig. 6 is the fluorescence calibration curve among hand-held analyzer second embodiment of the present invention;
Fig. 7 is the turbidity calibration curve in the third embodiment of the invention;
Fig. 8 is the N that uses in the first embodiment of the invention, N-diethyl-1, and the 4-phenylenediamine is surveyed the calibration curve of bromine;
Fig. 9 is the calibration curve with Kazakhstan western railway reagent survey iron in the first embodiment of the invention;
Figure 10 is the calibration curve with the western porphyrin reagent survey in Kazakhstan copper in the first embodiment of the invention;
Figure 11 is a hand-held analyzer method of testing process flow diagram of the present invention.
Embodiment
Describe specific embodiments of the invention in detail below in conjunction with accompanying drawing.
Fig. 1 is provided with distribution plan for light-emitting component among hand-held analyzer first embodiment of the present invention and photo-sensitive cell.As shown in Figure 1, in an optical system for testing, a surface mounted photo-sensitive cell 2 can detect and be installed in a plurality of surface mounted light-emitting components 1 on the same light path.When using surface mounted element, also can use traditional plug-in 5mm light emitting diode 3 and 4,5mm light emitting diode/light sensitive diode 5 and TO5 light sensitive diode 6 simultaneously, make them do rationally to distribute, make handheld portable analyser of the present invention can have colorimetric analysis wavelength more than ten at three dimensions.
Fig. 2 is a hand-held analyzer double-reflection path principle schematic of the present invention.The light that sends from light emitting diode 1 reflects through first reflective surface 7, passes sample cell 8, by 7 reflections of second reflective surface, arrives light sensitive diode 2 again, forms an optical system for testing.In the present invention, in the optical system for testing a plurality of optical elements can be arranged, thereby reach reusing of light path and save erection space.
Fig. 3 is a hand-held analyzer three-dimensional structure diagram of the present invention.As shown in Figure 3, two surface mounted light emitting diodes 1 are installed in the many places of circuit board 9, surface mounted light sensitive diode 2 can detect the light intensity of two surface mounted photodiodes 1 on same light path like this.The oval light emitting diode 5 of a 5mm and a TO5 encapsulation LED 6 also have been installed on the circuit board 9.Sample cell cup fixed support is made up of two parts up and down.Non-surface mounted light emitting diode 5 and light sensitive diode 6 need with sample cell cup upper bracket 11 and sample cell cup lower carriage 10 further fixing.Optical reflection face 7 is installed in the inboard of sample cell cup support 10, and after sample cell cup support 10 and 11 was fixed on the circuit board 1, optical reflection face 7 approximately was 45 degree with the angle on circuit board 1 plane.
As Figure 1-3, the present invention installs a plurality of light-emitting components on same light path, allow surface mounted element and non-surface mounted element do rationally to distribute, realize that handheld portable analyser of the present invention has than more colorimetric analysis of the similar analyser of tradition and fluorescence analysis wavelength at three dimensions.Simultaneously, utilize as shown in Figure 1 light-emitting component 1-photo-sensitive cell 2 and light-emitting component 7-photo-sensitive cell 8 these two light paths characteristics of 90 degree each other, also can measure the scattering properties of sample under a plurality of wavelength.
Two 1, one of surface mounted light emitting diodes shown in Figure 3 are the 420nm light emitting diodes, and another is the 560nm light emitting diode.Light sensitive diode 2 is surface mounted light sensitive diodes of a 2mm X 2mm.Reflecting surface is realized by the reflection sheet of the plating aluminium that is attached to sample cell support inboard.Following table is the measurement result to three standard absorbance samples, and this result shows between the linear zone of this programme and measures the requirement that reappearance can satisfy handheld portable colorimetric spectrum analysis.
Fig. 8-the 10th is with the calibration curve of the 560nm light-emitting diode measurement of this scheme.Standard N is used in the detection of bromine, N-diethyl-1,4-phenylenediamine method is used the ferron method of Ha Xi company to the detection of iron, the detection of copper is used the porphyrin method of Ha Xi company.The linearity of these calibration curves is good, is equal to or greater than the scope of existing handheld portable colorimetric spectrum analysis between linear zone, and the veiling glare that shows this scheme seldom satisfies the requirement of handheld portable colorimetric spectrum analysis.
Fig. 4 is provided with distribution plan for light-emitting component among hand-held analyzer second embodiment of the present invention and photo-sensitive cell.In this embodiment of the invention, purpose is to realize the fluorescence of a wavelength, the absorbance of two wavelength, and the scatterometry of a wavelength, and can revise fluorescence intensity with measured absorbance and scattering strength.In the present embodiment, except that the 400nm light emitting diode 1 that is installed in light sensitive diode 2 opposites, other three elements all have dual-use function.A logical optical filter 12 of 400nm band is housed before the light sensitive diode 2, realizes the measurement of fluorescence intensity with being installed in 90 degree direction 365nm light emitting diodes 1 '.Be installed in the 400nm light emitting diode 1 on light sensitive diode opposite and the measurement that light sensitive diode 2 is realized the 400nm absorbance together, another 400nm light emitting diode 1 that is installed in 365nm light emitting diode 1 ' opposite is realized the scattering strength measurement of sample at 400nm together with the light sensitive diode 2 that has optical filter 12.This 400nm light emitting diode 1 can also be used as light sensitive diode and use, and it realizes the measurement of 365nm absorbance with the 365nm light emitting diode 1 ' on opposite like this.
Based on arrangements of elements mode shown in Figure 4, can measure simultaneously fluorescence intensity absorption intensity and scattering strength, and to the correction of fluorescence analysis.Light emitting diode 1 is a ultraviolet light-emitting diodes, before the T5 encapsulation light sensitive diode 2 a 400nm bandpass filter 12 is housed.Two 400nm light emitting diodes 1 are the oval light emitting diodes of common 5mm.Present embodiment uses a cover two-stage amplification operational amplification circuit to convert the photocurrent of light sensitive diode and 400nm light emitting diode to 0 to 5V voltage.Fig. 6 is the fluorescence 1,3,6 that this embodiment obtains, 8-
Pyrene four sulphursAcid
(PTSA
)Calibration curve.
PTSA is used as tracer agent in Treatment of Industrial Water, when making the fluorescence excitation light source and survey its concentration with the 365nm light emitting diode, often be subjected to the natural humus acid in the water and the interference of tannic acid, these materials have very strong absorption at 365nm and 400nm, cause the PTSA fluorescence intensity of surveying reduce.In this example with 365nm/400nm to measuring the absorbance of water sample at 365nm, with the light sensitive diode of 400nm and band optical filter to measuring the absorbance of water sample at 400nm.Following table listed a series of PTSA of containing water sample fluorescence intensity and at the absorbance of 365nm and 400nm.The green tea water that has added different amounts in these water samples comes natural humus acid and the tannic acid in the Simulated Water.The calibration curve of also having listed in the table according to Fig. 6 calculates PTSA concentration, clearly when the 365nm absorption value is big (output that measures by light sensitive diode just hour), the measured deviation of PTSA concentration is just big, so PTSA concentration just can obtain proofreading and correct when the 365nm absorption value is known.Be the new calibration curve that contains 365nm absorption value and 400nm absorption value below,
PTSA/ppm?=?94.71?+?116.2*PD1 -?79.5*?PD2 -?1.25*PD3
| Tea concentration (relative value) | PTSA concentration/ppb | PTSA concentration with the calibration curve calculating that does not contain 365nm and 400nm correction term | PTSA concentration with the calibration curve calculating that contains 365nm and 400nm correction term | | PD2 | PD3 | |
| 0 | 91 | 88.0 | 87.9 | 1.178 | 1.769 | 2.388 | |
| 4 | 91 | 83.1 | 93.4 | 1.138 | 1.643 | 2.353 | |
| 8 | 91 | 80.2 | 95.3 | 1.115 | 1.585 | 2.334 | |
| 12 | 91 | 75.1 | 103.2 | 1.073 | 1.426 | 2.303 | |
| 20 | 91 | 58.4 | 101.6 | 0.937 | 1.248 | 2.235 | |
| 10 | 189.5 | 160.1 | 185.0 | 1.762 | 1.403 | 2.313 | |
| 20 | 189.5 | 139.4 | 177.4 | 1.594 | 1.255 | 2.241 | |
| 30 | 189.5 | 118.4 | 171.0 | 1.424 | 1.088 | 2.164 | |
| 40 | 189.5 | 97.9 | 169.8 | 1.258 | 0.862 | 2.089 | |
| 10 | 122.4 | 95.9 | 124.6 | 1.241 | 1.402 | 2.299 | |
| 20 | 122.4 | 84.5 | 129.5 | 1.149 | 1.208 | 2.231 | |
| 30 | 122.4 | 70.9 | 129.6 | 1.039 | 1.046 | 2.156 | |
| 10 | 71.5 | 52.7 | 83.6 | 0.891 | 1.406 | 2.311 | |
| 20 | 71.5 | 40.1 | 87.7 | 0.790 | 1.208 | 2.215 | |
| 30 | 71.5 | 18.8 | 83.5 | 0.617 | 1.009 | 2.112 |
Wherein PD1 is the output of light sensitive diode when the 365nm light emitting diode is lighted that has the 400nm optical filter, the fluorescence intensity of its response sample.PD2 is the output when the 365nm light emitting diode is lighted when using as light sensitive diode of 400nm light emitting diode, and its reflection sample is in the absorption value of 365nm.To be the light sensitive diode that has a 400nm optical filter do not work and the output of 400nm light emitting diode when lighting at the 365nm light emitting diode PD3, and its reflection sample is in the absorption value of 400nm.Listed the PTSA concentration of calculating by the calibration curve that contains 365nm and 400nm output calibration item in the table, be not difficult to find out that this calibration curve eliminated the influence of tea to the PTSA fluorescence analysis to a great extent.
Fig. 5 is a hand-held analyzer circuit theory synoptic diagram of the present invention.As required, electronic system of the present invention can switch to the two poles of the earth of light emitting diode 20 on the input end of an operational amplification circuit from an electric current output source by a selector switch 21, the realization light emitting diode is made light sensitive diode and is used, when light emitting diode is used as the light sensitive diode use, can detect light than its transmitted wave length.The benefit that allows light emitting diode have double action is the dirigibility that increases light path design, makes analyser have the light sources that utilize more.
Figure 7 shows that scattering strength is to be measured by the light sensitive diode that has the 400nm optical filter with the result of a series of formal hydrazine of embodiment 2 described structure measurements formazin turbidity standard solution, light source is the 400nm light emitting diode in its 90 degree direction.There is different definition in different countries to turbidity, survey the scattering strength ratio here and can not represent turbidity, but it can be used for the turbidity of near sample.In addition, 400nm bandpass filter among the embodiment 2 can change the long pass filter of 400nm into and not overslaugh to the fluorescence measurement of PTSA, the 400nm light emitting diode on 365nm light emitting diode opposite can change long wavelength's more light emitting diode into and not influence it as the measurement of a light sensitive diode to 365nm light, the device of embodiment 2 just can be measured the scattering strength of different wave length like this, makes institute's measured value more near turbidity value.In like manner, also can adopt two kinds or above different wave length light emitting diode simultaneously, on the above-mentioned common optical pathways of mentioning, measure, thereby further near turbidity value.
When the on-the-spot use of water treatment hand-held analyzer, run at adding reagent after a few minutes through regular meeting, the analyser display density surpasses sensing range and can not get any reading, and the user must estimate extension rate, and dilute sample is from new measurement.Can lose time like this and chemical reagent.Based on powerful electronic system of the present invention and hyperchannel light path, the present invention can address this problem in order to following method.
In general, there are one or more absorption peaks in a certain detected material, in order to reduce the detection lower limit, generally can select the maximum absorption wavelength of light emitting diode wavelength near this material.The shortcoming of making is to reduce upper limit of detection like this, making one of narrow characteristics of the present invention of sensing range is can install than traditional color comparator more to many light emitting diode of different wave length, analyser of the present invention like this can be measured the absorbance of a plurality of adjacent wavelengths, when obtained the maximum absorption surpasses sensing range, select the absorbance of adjacent wavelengths to determine the concentration of detected material automatically.For example, when surveying in the water positive phosphorus with vanadium molybdic acid reagent, can select the arbitrary wavelength of 360nm to 430nm, wavelength is short more, and susceptibility is just high more, and it is just low more to detect lower limit, and sensing range is also just narrow more.In scheme shown in Figure 4,365nm and 400nm light emitting diode are except being used as fluorescence analysis, they can be used for the method that vanadium molybdic acid reagent is surveyed positive phosphorus, consider that the present invention also can have the 420nm light source that general portable color comparator has, according to smart electronics systemic-function of the present invention and these three light sources, analyser of the present invention can be selected one or two in three light sources automatically, expands sensing range to 0 to the positive phosphorus of 50ppm.For example, 0 to 2ppm 365nm light source, and 2 to 10ppm 400nm light source, and 10 to 50ppm 420nm light source.
Thereby the other method that enlarges sensing range is to regulate the electric current adjusting light output of light emitting diode according to light sensitive diode measured signal size, so that allow light sensitive diode can detect a certain amount of signal.Imagination, the 5mA led current causes 4.5V light sensitive diode signal when sample-out count, this signal is near the maximum output 5V of light sensitive diode, as to measure an absorbance be 2.5 sample, the maximum output of light sensitive diode will be 0.014V, if this value less than metering circuit can survey scope, traditional colorimetric analysis instrument can show and goes beyond the scope prompting and can not get reading.When using this programme, can be increased to 20mA automatically for altogether the electric current of light emitting diode, thereby allow light sensitive diode can have the signal of 0.056V at least.Here to utilize the luminous energy output of light emitting diode in general to be proportional to the characteristic of giving its electric current altogether.
The other method that enlarges sensing range is to regulate the gain multiple of light sensitive diode metering circuit according to light sensitive diode measured signal size, imagination, the 5mA led current causes 4.5V light sensitive diode signal when sample-out count, this signal is near the maximum output 5V of light sensitive diode, as to measure an absorbance be 2.5 sample, the maximum output of light sensitive diode will be 0.014V, if this value less than metering circuit can survey scope, traditional colorimetric analysis instrument can show and goes beyond the scope prompting and can not get reading.When using this programme, can automatic 10 be increased the gain multiple of light sensitive diode metering circuit, thereby allow light sensitive diode metering circuit output 0.14 less than less than the signal less than V.Here to utilize the photosensitive electric current of light sensitive diode in several magnitude, to be proportional to the characteristic of the luminous energy that it responds to.
The above scheme can be realized by method flow diagram shown in Figure 11.LED represents light emitting diode among the figure, and PD represents photosensitive diode.Concrete method of testing comprises the steps:
1) whether in given range, selects the optimum analysis wavelength according to the absorbance of a plurality of wavelength of analyte;
2) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the electric current that increases light-emitting component increases analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
3) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that increases photo-sensitive cell increases analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
4) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, increase the electric current of light-emitting component and increase the gain multiple of photo-sensitive cell simultaneously, increase analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
5) whether surpass a certain given upper limit according to analyte in the fluorescence intensity of certain specific wavelength, the electric current that reduces excitation source increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
6) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that reduces photo-sensitive cell increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
7) whether be lower than a certain given lower limit according to analyte in the fluorescence intensity of certain specific wavelength, increase the electric current of excitation source and increase the gain multiple of photo-sensitive cell simultaneously, increase analyte concentration sensing range so that allow photo-sensitive cell detect enough fluorescence;
8) according to analyte at the absorbance of emission wavelength and the absorbance of excitation wavelength, and the scattering strength at some wavelength of water sample, the result proofreaies and correct to fluorescence analysis;
9) according to the scattering strength of analyte at one or more wavelength, the contrast colors analysis result is proofreaied and correct.
Described in this instructions is preferred embodiment of the present invention, and above embodiment is only in order to illustrate technical scheme of the present invention but not limitation of the present invention.All those skilled in the art all should be within the scope of the present invention under this invention's idea by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. portable multi-function analyser is characterized in that comprising:
One circuit board;
A plurality of surface mounted light-emitting components that are installed on the circuit board;
A plurality of surface mounted photo-sensitive cells that are installed on the circuit board;
One with the fixing sample cell cup fixed mount of described circuit board position, the fixed mount middle part is a transparent sample pond cup, is used for holding a sample cell;
Also comprise a plurality of optical reflection faces on the sample cell cup fixed mount, the light reflection that surface mounted light-emitting component is sent enters sample cell, will enter surface mounted photo-sensitive cell through the light reflection of sample cell, forms a plurality of optical system for testing; And
One programmable electronic system is connected with circuit board, and light-emitting component and photo-sensitive cell are controlled and read.
2. portable multi-function analyser as claimed in claim 1 is characterized in that in the described optical system for testing a plurality of surface mounted light-emitting components being arranged.
3. portable multi-function analyser as claimed in claim 1 is characterized in that in the described optical system for testing a plurality of surface mounted photo-sensitive cells being arranged.
4. portable multi-function analyser as claimed in claim 1 is characterized in that having optical filter before the surface mounted photo-sensitive cell, carries out fluorescence analysis simultaneously in colorimetric analysis.
5. portable multi-function analyser as claimed in claim 1 is characterized in that by regulating the size of light-emitting component input current, the control output intensity.
6. portable multi-function analyser as claimed in claim 1 is characterized in that regulating output by sense of control optical element gain multiple.
7. portable multi-function analyser as claimed in claim 1 is characterized in that programmable electronic system can convert light-emitting component to photo-sensitive cell and use.
8. use method of testing, it is characterized in that comprising the steps: as the described portable multi-function analyser of one of claim 1-7
1) whether in given range, selects the optimum analysis wavelength according to the absorbance of a plurality of wavelength of analyte;
2) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the electric current that increases light-emitting component increases analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
3) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that increases photo-sensitive cell increases analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
4) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, increase the electric current of light-emitting component and increase the gain multiple of photo-sensitive cell simultaneously, increase analyte concentration sensing range so that allow photo-sensitive cell detect enough transmitted lights;
5) whether surpass a certain given upper limit according to analyte in the fluorescence intensity of certain specific wavelength, the electric current that reduces excitation source increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
6) whether surpass a certain given upper limit according to analyte in the absorbance of certain specific wavelength, the gain multiple that reduces photo-sensitive cell increases analyte concentration sensing range so that allow fluorescence intensity in the sensing range of photo-sensitive cell;
7) whether be lower than a certain given lower limit according to analyte in the fluorescence intensity of certain specific wavelength, increase the electric current of excitation source and increase the gain multiple of photo-sensitive cell simultaneously, increase analyte concentration sensing range so that allow photo-sensitive cell detect enough fluorescence;
8) according to analyte at the absorbance of emission wavelength and the absorbance of excitation wavelength, and the scattering strength at some wavelength of water sample, the result proofreaies and correct to fluorescence analysis;
9) according to the scattering strength of analyte at one or more wavelength, the contrast colors analysis result is proofreaied and correct.
9. method of testing as claimed in claim 8 is characterized in that the while measuring samples is in the scattering strength of a certain wavelength when colorimetric analysis and fluorescence analysis with the light intensity of a plurality of photo-sensitive cells measurements that are installed in different angles via the water sample scattering.
10. method of testing as claimed in claim 8 is characterized in that measuring through being the light intensity by the water sample scattering, the turbidity of while measuring samples when colorimetric analysis and fluorescence analysis with a plurality of photo-sensitive cells that are installed in different angles.
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| CN109060697A (en) * | 2018-10-24 | 2018-12-21 | 深圳市长隆科技有限公司 | Automatically select the water quality parameter analyzer of Detection wavelength |
| CN110487723A (en) * | 2019-08-26 | 2019-11-22 | 长春美泰仪器有限公司 | A kind of multidimensional integration spectrum detection cell device |
| WO2021207871A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳迈瑞生物医疗电子股份有限公司 | Anti-interference detection method and sample analyzer |
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| CN109060697A (en) * | 2018-10-24 | 2018-12-21 | 深圳市长隆科技有限公司 | Automatically select the water quality parameter analyzer of Detection wavelength |
| CN110487723A (en) * | 2019-08-26 | 2019-11-22 | 长春美泰仪器有限公司 | A kind of multidimensional integration spectrum detection cell device |
| WO2021207871A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳迈瑞生物医疗电子股份有限公司 | Anti-interference detection method and sample analyzer |
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