CN104165706A - Manufacturing method and temperature detection method for PbSe quantum dot liquid-core optical fiber temperature sensor - Google Patents
Manufacturing method and temperature detection method for PbSe quantum dot liquid-core optical fiber temperature sensor Download PDFInfo
- Publication number
- CN104165706A CN104165706A CN201410405996.4A CN201410405996A CN104165706A CN 104165706 A CN104165706 A CN 104165706A CN 201410405996 A CN201410405996 A CN 201410405996A CN 104165706 A CN104165706 A CN 104165706A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- colloid
- pbse quantum
- core optical
- pbse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a manufacturing method and a temperature detection method for a PbSe quantum dot liquid-core optical fiber temperature sensor. The manufacturing method includes the five steps of selecting colloid PbSe quantum dots in various sizes, preparing a colloid PbSe quantum dot solution, injecting the colloid PbSe quantum dot temperature-sensitive fluorescent material solution and a trichloro ethylene solution into hollow optical fibers of the same type respectively to conduct packaging, completing manufacturing of a colloid PbSe quantum dot liquid-core optical fiber sensitive element, and establishing the PbSe quantum dot liquid-core optical fiber temperature sensor. The temperature detection method includes the three steps of manufacturing the colloid PbSe liquid-core optical fiber temperature sensor, calibrating the colloid PbSe quantum dot liquid-core optical fiber temperature sensor, and conducting multi-point temperature detection through the colloid PbSe quantum dot liquid-core optical fiber temperature sensor. By means of a designed device, multi-point temperature detection can be achieved, the adopted fluorescent material is low in cost, long in service life and high in quantum yield, and the designed temperature sensor is low in manufacturing cost, simple in structure and high in stability.
Description
Technical field
The present invention relates to temperature detection and fibre optic temperature sensor field, relate to a kind of method of structural design, making and multi-point temp detection of colloid PbSe quantum dot liquid-core optical fibre temperature sensor.
Background technology
Along with the rise of Fiber Optic Pyrometer, fibre optic temperature sensor is studied widely and is applied.The advantage such as that optical fiber has is not charged, volume is little, quality is light, flexible, radiation resistance is good.It,, as transferring material, has the advantages such as frequency of operation is wide, dynamic range is large simultaneously.Fibre optic temperature sensor, compared with traditional temperature sensor, has plurality of advantages: light wave do not produce electromagnetic interference (EMI), easily by range detector part receive, can carry out photoelectricity or electric light conversion, easily and the modern electronics of high development match etc.It is widely used in inflammable, explosive, space and is subject under the rugged surroundings such as strict restriction and strong electromagnetic.
Fibre optic temperature sensor is mainly divided into distributed optical fiber temperature sensor, fiber-optical grating temperature sensor, optical fiber fluorescence temperature sensor, Interference optical-fiber temperature sensors etc., and wherein optical fiber fluorescence temperature sensor is to study at present comparatively active novel optical fiber temperature sensor.At present, optical fiber fluorescence temperature sensor mainly uses rare earth material or organic material as fluorescent material, and not only cost is high, be subject to such environmental effects serviceable life, and its wavelength coverage cannot meet some detector range of receiving simultaneously.Colloid semiconductor-quantum-point material is a kind of novel fluorescent material, compared with the fluorescent material using with conventional optical fibers fluorescence temperature sensor, there is the exclusive advantages such as long service life, cost is low, fluorescence quantum yield is high, size is adjustable emission spectrum, can be used as novel light-converting material.Colloid lead selenide (PbSe) quantum dot has very strong quantum confinement and high quantum production rate (>85%) near infrared region, and its photoluminescent property is directly related with temperature.Therefore, colloid PbSe quantum dot demonstrates good application prospect as the fluorescence transition material of fibre optic temperature sensor.
Based on above-mentioned background, the method for sensing of development of new, design has the colloid PbSe quanta point optical fiber fluorescence temperature sensor part of the advantages such as cost is low, the life-span is long, quantum yield is high, emission spectrum field width, contributes to promote further developing of temperature detection technology.Through searching, make the colloid PbSe quantum dot liquid-core optical fibre temperature sensor based on colloid PbSe quantum dot liquid-core optical fibre sensitive element, and the method that realizes temperature detection is at home and abroad there are no relevant report.
Summary of the invention
For the fluorescent material life-span that overcomes optical fiber fluorescence temperature sensor existence is subject to such environmental effects, cost costliness, low quantum yield, the shortcomings such as wavelength domain is narrow, the invention provides a kind of making and temperature checking method of PbSe quantum dot liquid-core optical fibre temperature sensor, the method adopts colloid PbSe quantum dot as the responsive to temperature fluorescent material in optical fiber, utilize its size, photoluminescent property and the colloid PbSe quantum dot emission spectral intensity of specific dimensions and the one-to-one relationship of temperature that temperature relies on, adopt series of process method, make based on colloid PbSe quantum dot liquid-core optical fibre temperature-sensing element (device), and build colloid PbSe quantum dot liquid-core optical fibre temperature sensor.In colloid PbSe quantum dot liquid-core optical fibre temperature sensor, the light signal of the multiple spot liquid-core optical fibre sensitive element output that temperature is relied on, be converted to electric signal by photoelectric device, after amplifier amplification, A/D converter, single-chip microcomputer collection and data processing, be transferred to display and show reading, the multiple spot of realizing temperature detects.The temperature detection scope of the constructed colloid PbSe quantum dot liquid-core optical fibre temperature sensor of the present invention is 0 DEG C～90 DEG C, and resolution is 0.1 DEG C.
The present invention adopts following technical scheme to realize, and accompanying drawings is as follows:
1, the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor, it is characterized in that, use colloid PbSe quantum dot as responsive to temperature fluorescent material, make a kind of colloid PbSe quantum dot liquid-core optical fibre temperature-sensing element (device) of multiple temperature-sensing element (device) tandem compounds, and based on this kind of a kind of fibre optic temperature sensor that is applicable to multi-point temp detection of sensitive element design, the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor is as follows:
The colloid PbSe quantum dot of the first step, selected sizes: choose photodetector, require the light signal of colloid PbSe quantum dot liquid-core optical fibre sensitive element output, be the emission spectrum centre wavelength of colloid PbSe quantum dot, drop on the central area of photodetector response spectrum; After the absorption spectrum first exciton absorption peak center wavelength of selected colloid PbSe quantum dot, according to formula 1,
Calculate corresponding colloid PbSe quantum dot size, in formula 1, λ is the absorption spectrum first exciton absorption peak center wavelength of colloid PbSe quantum dot, and D is the size of colloid PbSe quantum dot; Tuning by size, colloid PbSe quantum dot emission spectral centroid wavelength coverage to 900～2200nm;
Second step, prepare colloid PbSe quantum dot solution: the size of the colloid PbSe quantum dot obtaining according to the first step, prepare the colloid PbSe quantum dot solution of corresponding size, and it is mixed respectively at triclene solution, generate colloid PbSe quantum dot and triclene mixed solution, be colloid PbSe quantum dot responsive to temperature fluorescent material solution, its concentration is determined according to actual requirement;
The 3rd step, colloid PbSe quantum dot responsive to temperature fluorescent material solution is injected respectively to the hollow optic fibre that model is identical with triclene solution, and encapsulate: choose the identical but hollow optic fibre that length is different of multistage optical fiber model, fiber lengths is determined according to actual needs; The colloid PbSe quantum dot of preparation and triclene mixed solution and triclene solution are injected into respectively in each section of optical fiber by hydraulic pressure injection method, and the types of agents of injecting in optical fiber determines according to actual requirement; The port of every section of optical fiber is passed through without shadow glue, and Ultraviolet Rays glue encapsulates, and is 50 μ m～100 μ m without the thickness of shadow glue;
The 4th step, complete the making of colloid PbSe quantum dot liquid-core optical fibre sensitive element: will between every two sections of optical fiber, use coupled connector to connect, to inject the optical fiber of colloid PbSe quantum dot responsive to temperature fluorescent material, the mode of injecting the optical fiber of triclene solution connects, allow the fiber segment of injecting the colloid PbSe quantum dot responsive to temperature fluorescent material that size is little than the more close optics selection of the fiber segment system (4) of injecting larger-size colloid PbSe quantum dot responsive to temperature fluorescent material, so far completed the making of multi-point temp detection liquid-core optical fibre sensitive element,
The 5th step, structure colloid PbSe quantum dot liquid-core optical fibre temperature sensor: build the colloid PbSe quantum dot liquid-core optical fibre temperature sensor being formed by colloid PbSe quantum dot liquid-core optical fibre sensitive element (3), optics selection system (4), signal conversion processes system (5), Single-chip Controlling acquisition system (6), the display (7) of laser instrument (1), collimation coupled lens (2), multiple spot detection; Wherein optics selection system (4) comprises the near infrared light optical filter identical with the centre wavelength of colloid PbSe quantum dot emission spectrum, it forms by organizing different optical filters more, can pass through the position of driven by motor optical filter, to realize the object of the peak wavelength selection to the different emission spectrum of colloid PbSe quantum dot; Signal conversion processes system (5) comprises the detector, amplifier and the A/D converter that receive colloid PbSe quantum dot emission spectral wavelength; Single-chip computer control system (6) comprises motor, and it sends instruction by single-chip microcomputer to motor, thereby controls the conversion of optical filter.
2, described multiple colloid PbSe quantum dot liquid-core optical fibre temperature-sensing element (device)s use respectively sizes colloid PbSe quantum dot as responsive to temperature fluorescent material, the centre wavelength of sizes colloid PbSe quantum dot emission spectrum need to keep certain intervals, avoid the overlapping of spectral signal occurs, affect the precision of temperature detection.
3, selectedly can see through near infrared light and visible ray without shadow glue, and play the effect of sealing; Selected triclene solution plays the effect of total reflection, and does not absorb visible ray and near infrared light.
4, adjust the emissive porwer of colloid PbSe quantum dot liquid-core optical fibre sensitive element PbSe quantum dot by injecting the concentration of colloid PbSe quantum dot, thus the output voltage of control system.
5, a temperature checking method for PbSe quantum dot liquid-core optical fibre temperature sensor, is characterized in that, proposes a kind of multi-point temp detection method based on colloid PbSe liquid-core optical fibre temperature sensor, and concrete detection method is as follows:
The first step, making colloid PbSe liquid-core optical fibre temperature sensor;
Second step, demarcation colloid PbSe quantum dot liquid-core optical fibre temperature sensor: first choose one section of fiber segment that is injected with colloid PbSe quantum dot and demarcate, it is heated, system can be exported a magnitude of voltage, use platinum resistance temperature sensor to measure the temperature after the fiber segment heating of colloid PbSe quantum dot simultaneously, complete the collection of one group of data; Use the method, multi collect data, choose wherein one group of data and, as standard value, then use numerical fitting method, draw formula 2,
T(℃)＝aU(V)+b
Wherein T is testee temperature, and U is the voltage of detection system output, and a, b are constant; By temperature and the magnitude of voltage measured, calculate a, b in formula 2, according to value and the formula 2 of a, b, carry out the demarcation of this section of optical fiber in colloid PbSe quantum dot liquid-core optical fibre sensitive element; Then the fiber segment of all the other being injected to other size colloids PbSe quantum dot repeats above-mentioned calibration process, carries out respectively numerical fitting, draws the value of many group a, b, brings formula 2 into, realizes the demarcation of colloid PbSe quantum dot liquid-core optical fibre temperature sensor;
The 3rd step, application colloid PbSe quantum dot liquid-core optical fibre temperature sensor carry out multi-point temp detection: in colloid PbSe quantum dot liquid-core optical fibre sensitive element (3), contain multiple parts that are filled with colloid PbSe quantum dot and triclene mixed solution, these parts are positioned on different measured object regions, measured object region from left to right number consecutively is I, II ..., the object quantity that wherein can measure temperature is determined by the quantity of colloid PbSe quantum dot in optical fiber and triclene mixed solution; Measure the temperature of region I, open laser instrument (1), penetrate beam of laser, laser enters into by collimation, coupled lens (2) the colloid PbSe quantum dot liquid-core optical fibre sensitive element (3) that multiple spot detects, the colloid PbSe quantum dot liquid-core optical fibre sensitive element (3) that multiple spot detects be excited given off infrared light via optics selection system (4), signal conversion processes system (5), single-chip computer control system (6) after, at the upper output of display (7) reading; Now, the optical filter in optics selection system (4) filter out with liquid-core optical fibre sensitive element in the inconsistent wavelength of centre wavelength of colloid PbSe quantum dot emission spectrum; Finally, application of formula 2 calculates the real time temperature of region I; In the time measuring the temperature of region II, Single-chip Controlling acquisition system (6) is sent instruction to motor, the rotation of driven by motor optical filter, be rotated into the consistent optical filter of centre wavelength of the centre wavelength of emission spectrum and the colloid PbSe quantum dot emission spectrum of surveyed area II fiber segment, re-use said method and measure the temperature of region II, realize the detection of multi-zone temperature according to said method.
6, described colloid PbSe quantum dot still has temperature size-dependent in optical fiber, when the colloid PbSe quantum dot size of choosing certain, the intensity of its emission spectrum and temperature have relation one to one, and both are linear, therefore light signal is detected device and is converted to after electric signal, and temperature and system output voltage are still linear.
Compared with prior art, the invention has the beneficial effects as follows:
1, making and the temperature checking method of PbSe quantum dot liquid-core optical fibre temperature sensor of the present invention, the fluorescent material cost that adopts is low, long service life, high quantum production rate;
2, making and the temperature checking method of PbSe quantum dot liquid-core optical fibre temperature sensor of the present invention, designed system can realize the detection of multi-point temp;
3, making and the temperature checking method of PbSe quantum dot liquid-core optical fibre temperature sensor of the present invention, designed system cost of manufacture is low, simple in structure, good stability.
Brief description of the drawings
Fig. 1 is liquid-core optical fibre sensitive element method for making process flow diagram of the present invention;
Fig. 2 is the colloid PbSe quantum dot liquid-core optical fibre sensitive element schematic diagram of 2 detections of the present invention;
Fig. 3 is 3.41nm colloid PbSe quantum dot solution absorption spectrum of the present invention and spectral radiation curves figure (at room temperature recording) and electron microscope picture thereof;
Fig. 4 is 4.06nm colloid PbSe quantum dot solution absorption spectrum of the present invention and spectral radiation curves figure (at room temperature recording) and electron microscope picture thereof;
Fig. 5 is temperature sensor schematic diagram of the present invention;
Fig. 6 is temperature checking method process flow diagram of the present invention;
Fig. 7 is 3.41nm colloid PbSe quantum dot liquid-core optical fibre sensitive element (after optical filter selection) emissive porwer of the present invention and temperature relation figure (temperature curve in figure in the presentation graphs of the upper right corner is arranged in order from bottom to top);
Fig. 8 is 4.06nm colloid PbSe quantum dot liquid-core optical fibre sensitive element (after optical filter selection) emissive porwer of the present invention and temperature relation figure (temperature curve in figure in the presentation graphs of the upper right corner is arranged in order from bottom to top);
Fig. 9 is (after optical filter selection) fitting a straight line figure of voltage, testee temperature and the 3.41nm colloid PbSe quantum dot liquid-core optical fibre sensitive element of temperature sensor of the present invention;
Voltage, testee temperature and 4.06nm colloid PbSe quantum dot liquid-core optical fibre (after optical filter selection) the fitting a straight line figure of Figure 10 temperature sensor of the present invention;
Figure 11 two point form temperature sensor of the present invention overhaul flow chart.
In figure: 1. laser instrument; 2. collimation coupled lens; 3. colloid PbSe quantum dot liquid-core optical fibre sensitive element; 4. optics selection system; 5. signal conversion processes system; 6. Single-chip Controlling acquisition system; 7. display; A. be filled with the optical fiber of three filter vinyl solutions; B. optical-fiber coupling connector; C. be filled with the optical fiber of specific dimensions 1 colloid PbSe quantum responsive to temperature fluorescent material solution; D. be filled with the optical fiber of specific dimensions 2 colloid PbSe quantum responsive to temperature fluorescent material solution.
Embodiment
Further illustrate detailed content of the present invention and embodiment thereof below in conjunction with accompanying drawing, but protection scope of the present invention is not limited to following embodiment.
The embodiment of the present invention is illustrated two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor and 2 temperature checking methods thereof.
One,, in conjunction with Fig. 1 and Fig. 2, the method for making of the method for making of the liquid-core optical fibre sensitive element of 2 temperature of colloid PbSe quantum dot of the present invention and two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor is as follows:
The size of the first step, selected 2 kinds of colloid PbSe quantum dots.The present invention chooses In
0.53ga
0.47as/InP PIN photodiode is as detector, and it can receive wavelength is 1000nm～1650nm.Because the present embodiment detects 2, therefore choosing emission center wavelength is the colloid PbSe quantum dot of 1193nm and the colloid PbSe quantum dot of 1387nm, in conjunction with Fig. 3 and Fig. 4, it is received spectrum the first exciton absorption peak center wavelength and is respectively λ=1104nm and λ=1313nm.The dimension D that calculates respectively colloid PbSe quantum dot according to formula 1 is 3.41nm and 4.06nm.
Second step, preparation size are the colloid PbSe quantum dot solution of 3.41nm and 4.06nm, and its colloid PbSe quantum dot as shown in Figure 3 and Figure 4.By the PbO of 0.892g (4.000mmol), the OA (8.000mmol) of 2.600g and the ODE of 12.848g pack there-necked flask into, under the environment of nitrogen protection, mixed solution is heated to 170 DEG C, until PbO all dissolves, solution fades to colourless, configuration quality is than the Se-TBP solution that is 10% afterwards, taking out 6.4g is injected into rapidly in the reaction solution of rapid stirring, temperature declines rapidly and remains on 140 DEG C, at this temperature, allow colloid PbSe Quantum Dots Growth 4 minutes, then inject rapidly excessive room-temperature toluene solution, reaction is put out, finally use chloroform-methanol extraction, and deposit with acetone, by colloid PbSe quantum dot purifying, make colloid PbSe quantum dot solution.Choosing concentration is 7.2 × 10
15qDs/cm3 (being of a size of 3.41nm) and 7.8 × 10
15qDs/cm3 (being of a size of 4.06nm) colloid PbSe quantum dot solution mixes with triclene respectively, i.e. colloid PbSe quantum dot responsive to temperature fluorescent material solution.
The 3rd step, colloid PbSe quantum dot responsive to temperature fluorescent material solution is injected into respectively in the hollow optic fibre that model is identical with triclene solution, and encapsulates.Choose the optical fiber that five sections of internal diameters and external diameter are respectively 100 μ m, 200 μ m, its length is 60cm, 60cm, 20cm, 40cm, 20cm respectively.The method that uses hydraulic pressure to inject is injected into mixed solution the optical fiber of two 20cm, and then making to use the same method is filled into triclene solution in remaining optical fiber, and all fiber ports use and encapsulate without shadow glue, are 51 μ m without the package thickness of shadow glue.
The 4th step, complete the making of colloid PbSe quantum dot liquid-core optical fibre sensitive element: connect in the mode of 60cm optical fiber, 20cm optical fiber (being of a size of the colloid PbSe quantum dot of 4.06nm), 40cm optical fiber, 20cm optical fiber (being of a size of the colloid PbSe quantum dot of 3.41nm), 60cm optical fiber by coupled connector, complete the making of the liquid-core optical fibre sensitive element of 2 temperature detection.
The 5th step, in conjunction with Fig. 5, build two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor.The structure of two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor comprises: wavelength is that 532nm laser instrument, collimation lens, coupled lens, two point form colloid PbSe quantum dot liquid-core optical fibre sensitive element, centre wavelength are 1193nm (scope is 1095～1291nm) and 1387nm (scope is 1287nm～1487nm) rotary type optical filter, In
0.53ga
0.47as/InP PIN photodiode, amplifier, A/D converter, single-chip microcomputer, motor, display.
Two, in conjunction with Fig. 5 and Fig. 6, the present invention has built based on two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor, and its temperature checking method is as follows:
The first step, structure two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor.
Second step, demarcation two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor.In conjunction with Fig. 7 and Fig. 8, because 3.41nm and 4.06nm colloid PbSe quantum dot have temperature size-dependent (being injected into after optical fiber), intensity and the temperature of its emission spectrum are linear.The scaling method of two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor is as follows: to being injected with two sections of region heating of optical fiber of colloid PbSe quantum dot, obtain respectively the output voltage of two sections, use platinum resistance temperature sensor (1/6B level) to measure the temperature after the fiber segment heating of colloid PbSe quantum dot, complete the measurement of one group of data.Gather respectively 7 groups of data, use numerical fitting method, obtain formula 3, formula 4, the data that gather are as shown in table 1, table 2, and two sections of colloid PbSe quantum dot numerical fitting curves of two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor as shown in Figure 9 and Figure 10.Wherein in formula 3, the span of U is 1.21～2.27V, and in formula 4, the span of U is 1.20～2.30V.Two point form colloid PbSe quantum dot liquid-core optical fibre calibration of sensor completes.
T (DEG C)=-85.0U (V)+193.13 formula 3
T (DEG C)=-90.9U (V)+208.17 formula 4
Table 1 is demarcated the tables of data (being of a size of the colloid PbSe quantum dot of 3.41nm) of two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor
| Temperature (DEG C) | 10.2 | 23.2 | 30.0 | 40.8 | 50.9 | 61.0 | 88.9 |
| Voltage (V) | 2.15 | 2.00 | 1.88 | 1.75 | 1.62 | 1.48 | 1.16 |
Table 2 is demarcated the tables of data (being of a size of the colloid PbSe quantum dot of 4.06nm) of two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor
| Temperature (DEG C) | 9.40 | 22.8 | 31.6 | 40.6 | 50.5 | 59.6 | 90.8 |
| Voltage (V) | 2.16 | 2.00 | 1.96 | 1.89 | 1.75 | 1.64 | 1.27 |
The 3rd step, in conjunction with Figure 11, application two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor carries out the temperature detection of 2.Random time is heated in the position that is full of 3.41nm and 4.06nm colloid PbSe quantum dot in optical fiber in air simultaneously.Opening wavelength is 532nm laser instrument Emission Lasers, laser enters into two point form colloid PbSe quantum dot liquid-core optical fibre sensitive element by collimation coupled lens, use single-chip microcomputer to send instruction to motor, be first the position that 1193nm optical filter rotates to receiving optical signals by centre wavelength, the light signal after filtration is via In
0.53ga
0.47as/InP PIN photodiode is converted to electric signal, after amplifier amplification, A/D converter, is gathered and data processing by single-chip microcomputer, is transferred in display and presents reading, and this temperature is the temperature of 3.41nm place heating.Re-using single-chip microcomputer and send instruction to motor, is the position that 1387nm optical filter rotates to receiving optical signals by centre wavelength, and the light signal after filtration is via In
0.53ga
0.47as/InP PIN photodiode is converted to electric signal, and after amplifier amplification, A/D converter, single-chip microcomputer collection and data processing, be transferred in display and present reading, and this temperature is the temperature of 4.06nm place heating.So far realized the detection of 2 temperature.
Three, test result
In order to verify the feasibility of two point form of the present invention (being of a size of 3.41nm and 4.06nm) colloid PbSe quantum dot liquid-core optical fibre temperature sensor, the two point form colloid PbSe quantum dot liquid-core optical fibre temperature sensor that simultaneously uses the present invention to build, platinum resistance temperature sensor (1/6B level) is measured 2 heating regions, wherein region I uses the sensing location that is injected with 4.06nm Colloidal Quantum Dots in optical fiber to measure, region II uses the sensing location that is injected with 3.41nm Colloidal Quantum Dots in optical fiber to measure, and contrast with platinum resistance temperature sensor (1/6B level) respectively, measurement result is as shown in table 3.
Table 3 temperature measurement result contrast table
| Heating region I | 1 | 2 | 3 | 4 | 5 | 6 |
| Platinum resistance measured value (DEG C) | 3.25 | 15.50 | 38.20 | 59.93 | 73.25 | 82.76 |
| Native system measured value (DEG C) | 3.2 | 15.6 | 38.1 | 59.9 | 73.2 | 82.8 |
| Deviation (DEG C) | 0.05 | -0.10 | 0.10 | 0.03 | 0.05 | -0.04 |
| Heating region II | 1 | 2 | 3 | 4 | 5 | 6 |
| Platinum resistance measured value (DEG C) | 3.68 | 16.04 | 41.00 | 62.44 | 76.21 | 88.65 |
| Native system measured value (DEG C) | 3.6 | 16.0 | 41.1 | 62.5 | 76.2 | 88.6 |
| Deviation (DEG C) | 0.08 | 0.04 | -0.10 | -0.06 | 0.01 | 0.05 |
Draw according to above-mentioned data, two point form (being of a size of 3.41nm and 4.06nm) colloid PbSe quantum dot liquid-core optical fibre temperature sensor is with respect to platinum resistance temperature sensor, and deviation is less than ± and 0.1 DEG C, prove that method of the present invention is feasible.
Claims (6)
- The method for making of 1.PbSe quantum dot liquid-core optical fibre temperature sensor, it is characterized in that, use colloid PbSe quantum dot as responsive to temperature fluorescent material, make a kind of colloid PbSe quantum dot liquid-core optical fibre temperature-sensing element (device) of multiple temperature-sensing element (device) tandem compounds, and based on this kind of a kind of fibre optic temperature sensor that is applicable to multi-point temp detection of sensitive element design, the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor is as follows:The colloid PbSe quantum dot of the first step, selected sizes: choose photodetector, require the light signal of colloid PbSe quantum dot liquid-core optical fibre sensitive element output, be the emission spectrum centre wavelength of colloid PbSe quantum dot, drop on the central area of photodetector response spectrum; After the absorption spectrum first exciton absorption peak center wavelength of selected colloid PbSe quantum dot, according to formula 1,Calculate corresponding colloid PbSe quantum dot size, in formula 1, λ is the absorption spectrum first exciton absorption peak center wavelength of colloid PbSe quantum dot, and D is the size of colloid PbSe quantum dot; Tuning by size, colloid PbSe quantum dot emission spectral centroid wavelength coverage to 900～2200nm;Second step, prepare colloid PbSe quantum dot solution: the size of the colloid PbSe quantum dot obtaining according to the first step, prepare the colloid PbSe quantum dot solution of corresponding size, and it is mixed respectively at triclene solution, generate colloid PbSe quantum dot and triclene mixed solution, be colloid PbSe quantum dot responsive to temperature fluorescent material solution, its concentration is determined according to actual requirement;The 3rd step, colloid PbSe quantum dot responsive to temperature fluorescent material solution is injected respectively to the hollow optic fibre that model is identical with triclene solution, and encapsulate: choose the identical but hollow optic fibre that length is different of multistage optical fiber model, fiber lengths is determined according to actual needs; The colloid PbSe quantum dot of preparation and triclene mixed solution and triclene solution are injected into respectively in each section of optical fiber by hydraulic pressure injection method, and the types of agents of injecting in optical fiber determines according to actual requirement; The port of every section of optical fiber is passed through without shadow glue, and Ultraviolet Rays glue encapsulates, and is 50 μ m～100 μ m without the thickness of shadow glue;The 4th step, complete the making of colloid PbSe quantum dot liquid-core optical fibre sensitive element: will between every two sections of optical fiber, use coupled connector to connect, to inject the optical fiber of colloid PbSe quantum dot responsive to temperature fluorescent material, the mode of injecting the optical fiber of triclene solution connects, allow the fiber segment of injecting the colloid PbSe quantum dot responsive to temperature fluorescent material that size is little than the more close optics selection of the fiber segment system (4) of injecting larger-size colloid PbSe quantum dot responsive to temperature fluorescent material, so far completed the making of multi-point temp detection liquid-core optical fibre sensitive element,The 5th step, structure colloid PbSe quantum dot liquid-core optical fibre temperature sensor: build the colloid PbSe quantum dot liquid-core optical fibre temperature sensor being formed by colloid PbSe quantum dot liquid-core optical fibre sensitive element (3), optics selection system (4), signal conversion processes system (5), Single-chip Controlling acquisition system (6), the display (7) of laser instrument (1), collimation coupled lens (2), multiple spot detection; Wherein optics selection system (4) comprises the near infrared light optical filter identical with the centre wavelength of colloid PbSe quantum dot emission spectrum, it forms by organizing different optical filters more, can pass through the position of driven by motor optical filter, to realize the object of the peak wavelength selection to the different emission spectrum of colloid PbSe quantum dot; Signal conversion processes system (5) comprises the detector, amplifier and the A/D converter that receive colloid PbSe quantum dot emission spectral wavelength; Single-chip computer control system (6) comprises motor, and it sends instruction by single-chip microcomputer to motor, thereby controls the conversion of optical filter.
- 2. the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor according to claim 1, it is characterized in that, described multiple colloid PbSe quantum dot liquid-core optical fibre temperature-sensing element (device)s use respectively sizes colloid PbSe quantum dot as responsive to temperature fluorescent material, the centre wavelength of sizes colloid PbSe quantum dot emission spectrum need to keep certain intervals, avoid the overlapping of spectral signal occurs, affect the precision of temperature detection.
- 3. the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor according to claim 1, is characterized in that, selected can see through near infrared light and visible ray without shadow glue, and plays the effect of sealing; Selected triclene solution plays the effect of total reflection, and does not absorb visible ray and near infrared light.
- 4. the method for making of PbSe quantum dot liquid-core optical fibre temperature sensor according to claim 1, it is characterized in that, adjust the emissive porwer of colloid PbSe quantum dot liquid-core optical fibre sensitive element PbSe quantum dot by injecting the concentration of colloid PbSe quantum dot, thus the output voltage of control system.
- 5. a temperature checking method for PbSe quantum dot liquid-core optical fibre temperature sensor, is characterized in that, proposes a kind of multi-point temp detection method based on colloid PbSe liquid-core optical fibre temperature sensor, and concrete detection method is as follows:The first step, making colloid PbSe liquid-core optical fibre temperature sensor;Second step, demarcation colloid PbSe quantum dot liquid-core optical fibre temperature sensor: first choose one section of fiber segment that is injected with colloid PbSe quantum dot and demarcate, it is heated, system can be exported a magnitude of voltage, use platinum resistance temperature sensor to measure the temperature after the fiber segment heating of colloid PbSe quantum dot simultaneously, complete the collection of one group of data; Use the method, multi collect data, choose wherein one group of data and, as standard value, then use numerical fitting method, draw formula 2,T(℃)＝aU(V)+bWherein T is testee temperature, and U is the voltage of detection system output, and a, b are constant; By temperature and the magnitude of voltage measured, calculate a, b in formula 2, according to value and the formula 2 of a, b, carry out the demarcation of this section of optical fiber in colloid PbSe quantum dot liquid-core optical fibre sensitive element; Then the fiber segment of all the other being injected to other size colloids PbSe quantum dot repeats above-mentioned calibration process, carries out respectively numerical fitting, draws the value of many group a, b, brings formula 2 into, realizes the demarcation of colloid PbSe quantum dot liquid-core optical fibre temperature sensor;The 3rd step, application colloid PbSe quantum dot liquid-core optical fibre temperature sensor carry out multi-point temp detection: in colloid PbSe quantum dot liquid-core optical fibre sensitive element (3), contain multiple parts that are filled with colloid PbSe quantum dot and triclene mixed solution, these parts are positioned on different measured object regions, measured object region from left to right number consecutively is I, II ..., the object quantity that wherein can measure temperature is determined by the quantity of colloid PbSe quantum dot in optical fiber and triclene mixed solution; Measure the temperature of region I, open laser instrument (1), penetrate beam of laser, laser enters into by collimation, coupled lens (2) the colloid PbSe quantum dot liquid-core optical fibre sensitive element (3) that multiple spot detects, the colloid PbSe quantum dot liquid-core optical fibre sensitive element (3) that multiple spot detects be excited given off infrared light via optics selection system (4), signal conversion processes system (5), single-chip computer control system (6) after, at the upper output of display (7) reading; Now, the optical filter in optics selection system (4) filter out with liquid-core optical fibre sensitive element in the inconsistent wavelength of centre wavelength of colloid PbSe quantum dot emission spectrum; Finally, application of formula 2 calculates the real time temperature of region I; In the time measuring the temperature of region II, Single-chip Controlling acquisition system (6) is sent instruction to motor, the rotation of driven by motor optical filter, be rotated into the consistent optical filter of centre wavelength of the centre wavelength of emission spectrum and the colloid PbSe quantum dot emission spectrum of surveyed area II fiber segment, re-use said method and measure the temperature of region II, realize the detection of multi-zone temperature according to said method.
- 6. the temperature checking method of a kind of PbSe quantum dot liquid-core optical fibre temperature sensor according to claim 5, it is characterized in that, described colloid PbSe quantum dot still has temperature size-dependent in optical fiber, when the colloid PbSe quantum dot size of choosing certain, the intensity of its emission spectrum and temperature have relation one to one, and both are linear, therefore light signal is detected device and is converted to after electric signal, and temperature and system output voltage are still linear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405996.4A CN104165706B (en) | 2014-08-15 | 2014-08-15 | The making of PbSe quantum dot liquid-core optical fibre temperature sensor and temperature checking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405996.4A CN104165706B (en) | 2014-08-15 | 2014-08-15 | The making of PbSe quantum dot liquid-core optical fibre temperature sensor and temperature checking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165706A true CN104165706A (en) | 2014-11-26 |
| CN104165706B CN104165706B (en) | 2016-08-31 |
Family
ID=51909623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410405996.4A Expired - Fee Related CN104165706B (en) | 2014-08-15 | 2014-08-15 | The making of PbSe quantum dot liquid-core optical fibre temperature sensor and temperature checking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104165706B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614092A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨理工大学 | Modular interface temperature sensor of liquid-core optical fiber |
| CN106768406A (en) * | 2016-11-24 | 2017-05-31 | 哈尔滨工业大学 | A kind of cell temperature measuring system |
| CN108169428A (en) * | 2017-12-29 | 2018-06-15 | 华南师范大学 | A kind of formaldehyde gas, humidity and temperature integrated monitor equipment |
| CN109990915A (en) * | 2017-12-29 | 2019-07-09 | Tcl集团股份有限公司 | Temperature sensor |
| CN110220612A (en) * | 2019-05-29 | 2019-09-10 | 华南师范大学 | A kind of temperature sensor and preparation method thereof of hollow microstructured optical fibers |
| CN110702264A (en) * | 2019-10-31 | 2020-01-17 | 浙江光塔节能科技有限公司 | Detection system for quantum dot optical fiber illumination |
| CN113174652A (en) * | 2021-04-30 | 2021-07-27 | 安徽大学 | Method for coaxially printing quantum dot hydrogel optical fiber and multi-parameter sensing application |
| CN113295383A (en) * | 2021-04-29 | 2021-08-24 | 成都新锐鑫光通信技术有限公司 | Bootstrap fiber connector |
| CN113551800A (en) * | 2021-07-06 | 2021-10-26 | 安徽大学 | Method for manufacturing quantum dot optical fiber sensing probe based on ink-jet printing technology |
| CN116380032B (en) * | 2023-02-07 | 2023-08-18 | 中国船舶集团有限公司第七〇七研究所 | Optical fiber gyro and temperature self-compensation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110736B (en) * | 2010-11-09 | 2012-05-23 | 北京理工大学 | Colloid quantum dot-based infrared photoelectric detector and manufacturing method thereof |
| CN102723350B (en) * | 2012-06-21 | 2014-07-23 | 吉林大学 | PbSe colloidal quantum dot based array Hall element and preparation method thereof |
| CN102723440A (en) * | 2012-06-26 | 2012-10-10 | 吉林大学 | ZnCuInS/ZnS quantum dot white light LED (Light Emitting Diode) based on compensation light emitting and manufacturing method thereof |
| CN103674318B (en) * | 2014-01-06 | 2016-01-20 | 吉林大学 | Based on the detection method of the integrated circuit (IC) chip microcell surface temperature distribution of colloid lead selenide quantum dot |
-
2014
- 2014-08-15 CN CN201410405996.4A patent/CN104165706B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614092A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨理工大学 | Modular interface temperature sensor of liquid-core optical fiber |
| CN106768406A (en) * | 2016-11-24 | 2017-05-31 | 哈尔滨工业大学 | A kind of cell temperature measuring system |
| CN106768406B (en) * | 2016-11-24 | 2019-03-26 | 哈尔滨工业大学 | A kind of cell temperature measuring system |
| CN108169428A (en) * | 2017-12-29 | 2018-06-15 | 华南师范大学 | A kind of formaldehyde gas, humidity and temperature integrated monitor equipment |
| CN109990915A (en) * | 2017-12-29 | 2019-07-09 | Tcl集团股份有限公司 | Temperature sensor |
| CN110220612B (en) * | 2019-05-29 | 2020-12-01 | 华南师范大学 | Temperature sensor of hollow microstructure optical fiber and preparation method thereof |
| CN110220612A (en) * | 2019-05-29 | 2019-09-10 | 华南师范大学 | A kind of temperature sensor and preparation method thereof of hollow microstructured optical fibers |
| CN110702264A (en) * | 2019-10-31 | 2020-01-17 | 浙江光塔节能科技有限公司 | Detection system for quantum dot optical fiber illumination |
| CN113295383A (en) * | 2021-04-29 | 2021-08-24 | 成都新锐鑫光通信技术有限公司 | Bootstrap fiber connector |
| CN113295383B (en) * | 2021-04-29 | 2022-12-20 | 深圳市格莱特通信技术有限公司 | Bootstrap fiber connector |
| CN113174652A (en) * | 2021-04-30 | 2021-07-27 | 安徽大学 | Method for coaxially printing quantum dot hydrogel optical fiber and multi-parameter sensing application |
| CN113551800A (en) * | 2021-07-06 | 2021-10-26 | 安徽大学 | Method for manufacturing quantum dot optical fiber sensing probe based on ink-jet printing technology |
| CN116380032B (en) * | 2023-02-07 | 2023-08-18 | 中国船舶集团有限公司第七〇七研究所 | Optical fiber gyro and temperature self-compensation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104165706B (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104165706A (en) | Manufacturing method and temperature detection method for PbSe quantum dot liquid-core optical fiber temperature sensor | |
| US4598202A (en) | Nuclear and pressure sensitive line/perimeter detection system | |
| CN100511623C (en) | Method for measuring semiconductor doping concentration | |
| CN106248247A (en) | A kind of based on the brillouin distributed temperature of Raman, the sensing device of the double Parametric Detection of stress | |
| CN106525742A (en) | Gas concentration monitoring method, apparatus and system | |
| CN106093964B (en) | A kind of sodium fluorescence Doppler lidar and method for measuring atmospheric wind and temperature | |
| CN102495021B (en) | System and method for detecting trace amount of steam based on two absorption peaks | |
| CN102928003A (en) | Fiber grating demodulating system with real-time reference | |
| CN106482863A (en) | Temperature sensor and temperature-sensing system based on active phase-shifted grating | |
| CN106772548A (en) | Neutron (-detecting) phosphor position sensitive detector test system and method | |
| CN107991259A (en) | A kind of cavity ring-down spectroscopy humidity measurement system based on intracavitary amplification | |
| CN103308280A (en) | Quantum efficiency calibration device and calibrating method for CCD (charge coupled device) | |
| CN207557107U (en) | A kind of cavity ring-down spectroscopy humidity measurement system based on intracavitary amplification | |
| CN104501843A (en) | External cavity type fiber laser sensor based on random feedback | |
| CN106323500B (en) | A kind of self-alignment optical fiber Raman thermometry system of realization temperature and its calibration method | |
| Joža et al. | Simple and low-cost fiber-optic sensors for detection of UV radiation | |
| CN101614664A (en) | Dry rubber content measuring system of natural rubber based on Y-type optical fiber | |
| CN102901583A (en) | Distributed temperature measurement system based on optical fiber radiation attenuation temperature dependency | |
| CN202404022U (en) | Trace water vapor detection system based on double absorption peaks | |
| CN205785514U (en) | All-fiber power measurement system for high-power fiber laser | |
| CN103091568B (en) | A kind of avalanche photodiode excessive noise factor measuring system | |
| CN103471817B (en) | A kind of Duo Chang space photometric distribution rapid measurement device and method | |
| CN106772550B (en) | Fibre-optical bending disappears mold device, method | |
| CN103674318A (en) | Surface temperature distribution detecting method for micron-scale region of integrated circuit chip based on colloidal PbSe quantum dots | |
| CN106768351A (en) | Infrared Detectors single mode changeable responsiveness test system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |