Temperature field measuring device and method

Abstract

The application discloses a temperature field temperature measuring device and method. The device comprises a laser module for emitting laser; a light splitting module for reflecting laser to a detection target to excite a radiation fluorescence signal on the detection target and transmitting the radiation fluorescence signal; an imaging module comprising: a first channel for imaging according to a thermal radiation signal of a first wavelength range to obtain a first thermal radiation image; a second channel for imaging according to a radiation fluorescence signal of a second wavelength range to obtain a first fluorescence image, and imaging according to a thermal radiation signal of the second wavelength range to obtain a second thermal radiation image; a third channel for imaging according to a radiation fluorescence signal of a third wavelength range to obtain a second fluorescence image; and a calculation and display module for calculating and displaying temperatures of different positions of the detection target according to the first fluorescence image, the second fluorescence image, the first thermal radiation image and the second thermal radiation image.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature measurement, and more particularly, to a temperature field temperature measurement device and method. BACKGROUND

[0002] The temperature measurement technology mainly includes two types of contact type and non-contact type. The contact type temperature measurement technology such as thermocouple has the disadvantages of weak anti-interference ability, contact type measurement, low spatial and temporal resolution, aging of the measurement end, and difficult signal lead, etc., and cannot accurately obtain the temperature change of the hot end component.

[0003] Compared with the contact type temperature measurement technology, the non-contact type thermal radiation temperature measurement technology determines the temperature of the target by measuring the thermal radiation signal of the target radiation. The thermal radiation temperature measurement technology has the characteristics of non-contact, temperature field measurement, and convenient signal transmission, and can overcome the shortcomings of the traditional contact type temperature measurement. However, the thermal radiation temperature measurement technology using a single response band (visible light, or near infrared, or infrared) has a limited temperature measurement range, and is only suitable for medium and high temperature measurement, and is difficult to realize medium and low temperature measurement. SUMMARY

[0004] Therefore, the main purpose of the present application is to provide a temperature field temperature measurement device and method, so as to at least partially solve at least one of the technical problems mentioned.

[0005] One aspect of the present application provides a temperature field temperature measurement device, comprising:

[0006] a laser module adapted to emit laser light;

[0007] a light splitting module adapted to reflect the laser light onto a detection target to excite a radiation fluorescent signal on the detection target, and transmit the radiation fluorescent signal;

[0008] an imaging module comprising:

[0009] a first channel adapted to image according to the thermal radiation signal of the first wavelength range emitted by the detection target to obtain a first thermal radiation image;

[0010] a second channel adapted to image according to the radiation fluorescent signal of the second wavelength range transmitted by the light splitting module to obtain a first fluorescent image, and image according to the thermal radiation signal of the second wavelength range emitted by the detection target to obtain a second thermal radiation image; and

[0011] a third channel adapted to image according to the radiation fluorescent signal of the third wavelength range transmitted by the light splitting module to obtain a second fluorescent image; and

[0012] The computing and displaying module is adapted to calculate and display the temperatures of different positions of the detection target according to the first fluorescent image, the second fluorescent image, the first thermal radiation image and the second thermal radiation image.

[0013] The first wavelength range, the second wavelength range and the third wavelength range are different from each other.

[0014] According to the embodiment of the present application, the computing and displaying module comprises:

[0015] The computing unit is adapted to calculate the temperatures of different positions of a part of the detection target according to the first fluorescent image and the second fluorescent image, and to calculate the temperatures of different positions of another part of the detection target according to the first thermal radiation image and the second thermal radiation image; and

[0016] The displaying unit is adapted to display the calculated temperatures of different positions of the detection target.

[0017] According to the embodiment of the present application, the calculation of the temperatures of different positions of the part of the detection target according to the first fluorescent image and the second fluorescent image comprises:

[0018] Obtaining a first luminescence intensity of the first target imaging position in the first fluorescent image;

[0019] Obtaining a second luminescence intensity of the first target imaging position in the second fluorescent image; and

[0020] According to the first luminescence intensity and the second luminescence intensity, determining the temperature of the position of the part of the detection target corresponding to the first target imaging position, and further determining the temperatures of different positions of the part of the detection target.

[0021] According to the embodiment of the present application, the first luminescence intensity, the second luminescence intensity and the temperature of the position of the part of the detection target corresponding to the first target imaging position (i, j) satisfy the following relationship:

[0022]

[0023] wherein (i, j) is the first target imaging position, A and B are coefficients; k is the Boltzmann constant; ΔE is the energy level difference between the thermal coupling energy level in the second channel and the thermal coupling energy level in the third channel, is the first luminescence intensity, is the second luminescence intensity, Q i,j is the ratio of fluorescent luminescence intensity, T i,j is the temperature of the position of the part of the detection target corresponding to the first target imaging position (i, j).

[0024] According to an embodiment of the present application, the temperature of the position of the other part of the detection target corresponding to the second target imaging position is determined according to the third luminous intensity and the fourth luminous intensity, and the temperature of different positions of the other part of the detection target is determined.

[0025] The third luminous intensity of the second target imaging position in the first thermal radiation image is obtained.

[0026] The fourth luminous intensity of the second target imaging position in the second thermal radiation image is obtained.

[0027] The temperature of the position of the other part of the detection target corresponding to the second target imaging position is determined according to the third luminous intensity and the fourth luminous intensity, and the temperature of different positions of the other part of the detection target is determined.

[0028] According to an embodiment of the present application, the temperature of the position of the other part of the detection target corresponding to the second target imaging position (m, n) satisfies the following relationship between the third luminous intensity and the fourth luminous intensity:

[0029]

[0030]

[0031] wherein (m, n) is the second target imaging position, is the third luminous intensity, is the fourth luminous intensity, and ε is the thermal radiation spectral emissivity of the detection target; T m,n is the temperature of the position of the other part of the detection target corresponding to the second target imaging position (m, n); λ R is the spectral equivalent wavelength of the first channel, and λ G is the spectral equivalent wavelength of the second channel; I b (λ R , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ R , and I b (λ G , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ G .

[0032] According to an embodiment of the present application, a beam expander module is further included between the light splitting module and the laser module, and the beam expander module is adapted to expand the laser emitted by the laser module.

[0033] According to an embodiment of the present application, a focusing module is further included between the light splitting module and the imaging module, and the focusing module is adapted to focus the radiation fluorescent signal transmitted by the light splitting module and then input to the imaging module.

[0034] According to an embodiment of the present application, a timing control module is further included, and adapted to control the laser module, the computing and displaying module and the imaging module.

[0035] According to an embodiment of the present application, the acquisition frequency of the imaging module is twice the switching modulation frequency of the laser.

[0036] According to an embodiment of the present application, the first channel is an R channel, the first wavelength range is 600-700 nm, the second channel is a G channel, the second wavelength range is 500-600 nm, and the third channel is a B channel, and the third wavelength range is 400-500 nm.

[0037] According to an embodiment of the present application, the switching modulation frequency of the laser is 1-30 Hz.

[0038] According to an embodiment of the present application, the wavelength range of the laser is 300-400 nm.

[0039] Another aspect of the present application provides a temperature measurement method using the temperature field measurement device, and the temperature measurement method comprises:

[0040] The laser emitted by the laser module is reflected to the detection target by the light splitting module to excite a radiation fluorescent signal on the detection target, and the radiation fluorescent signal is transmitted by the light splitting module;

[0041] The second wavelength range of the radiation fluorescent signal transmitted by the light splitting module is imaged by the second channel to obtain a first fluorescent image;

[0042] The third wavelength range of the radiation fluorescent signal transmitted by the light splitting module is imaged by the third channel to obtain a second fluorescent image;

[0043] The first wavelength range of the thermal radiation signal emitted by the detection target is imaged by the first channel to obtain a first thermal radiation image;

[0044] The second wavelength range of the thermal radiation signal emitted by the detection target is imaged by the second channel to obtain a second thermal radiation image;

[0045] The first fluorescent image, the second fluorescent image, the first thermal radiation image and the second thermal radiation image are calculated and displayed by the computing and displaying module to calculate and display the temperature of different positions of the detection target.

[0046] According to the embodiment of the present application, before the laser module emits laser, the temperature measuring method further comprises:

[0047] Turning on the laser module and the second channel of the imaging module and the third channel of the imaging module;

[0048] Before imaging according to the thermal radiation signal of the first wavelength range emitted by the target object by using the first channel to obtain the first thermal radiation image, the temperature measuring method further comprises:

[0049] Turning off the laser module and turning on the first channel and the second channel of the imaging module.

[0050] According to the embodiment of the present application, calculating and displaying the temperature of different positions of the target object according to the first fluorescent image, the second fluorescent image, the first thermal radiation image and the second thermal radiation image comprises:

[0051] Calculating and displaying the temperature of different positions of a part of the target object according to the first fluorescent image and the second fluorescent image by using the calculation and display module;

[0052] Calculating and displaying the temperature of different positions of another part of the target object according to the first thermal radiation image and the second thermal radiation image by using the calculation and display module;

[0053] Obtaining the temperature of different positions of the target object according to the temperature of different positions of the part of the target object and the temperature of different positions of another part of the target object.

[0054] According to the embodiment of the present application, calculating the temperature of different positions of a part of the target object according to the first fluorescent image and the second fluorescent image by using the calculation and display module comprises:

[0055] Obtaining the first luminous intensity of the first target imaging position in the first fluorescent image;

[0056] Obtaining the second luminous intensity of the first target imaging position in the second fluorescent image; and

[0057] According to the first luminous intensity and the second luminous intensity, determining the temperature of the position of the part of the target object corresponding to the first target imaging position, and further determining the temperature of different positions of the part of the target object.

[0058] According to the embodiment of the present application, the first luminous intensity, the second luminous intensity and the temperature of the position of the part of the target object corresponding to the first target imaging position satisfy the following relationship:

[0059]

[0060] Wherein, (i,j) is the first target imaging position, A and B are coefficients, k is the Boltzmann constant; ΔE is the energy level difference between the thermal coupling energy level in the second channel and the thermal coupling energy level in the third channel, is the first luminous intensity, is the second luminous intensity, Q i,j is the fluorescence luminous intensity ratio, T i,j is the temperature of the position of the other part of the detection target region corresponding to the target imaging position (i,j).

[0061] According to the embodiment of the present application, the temperature of the target position of the other part of the detection target region calculated by the calculation and display module according to the first thermal radiation image and the second thermal radiation image includes:

[0062] Obtaining the third luminous intensity of the second target imaging position in the first thermal radiation image;

[0063] Obtaining the fourth luminous intensity of the second target imaging position in the second thermal radiation image; and

[0064] According to the third luminous intensity and the fourth luminous intensity, the temperature of the position of the other part of the detection target region corresponding to the second target imaging position is determined, and the temperatures of different positions of the other part of the detection target region are determined.

[0065] According to the embodiment of the present application, the third luminous intensity and the fourth luminous intensity satisfy the following relationship with the temperature of the position of the other part of the detection target region corresponding to the second target imaging position (m,n):

[0066]

[0067]

[0068] Wherein, (m,n) is the second target imaging position, is the third luminous intensity, is the fourth luminous intensity, and ε is the thermal radiation spectral emissivity of the detection target; T m,n is the temperature of the position of the other part of the detection target region corresponding to the second target imaging position (m,n); λ R is the spectral equivalent wavelength of the R channel, λ G is the spectral equivalent wavelength of the G channel; I b (λ R , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ R , I b (λG T m,n ) represents the blackbody spectral radiance intensity distribution function at temperature T m,n , wavelength λ G .

[0069] The temperature field temperature measuring device according to the embodiment of the present application utilizes the laser module to emit laser, the light splitting module reflects the laser to the detection target to excite the radiation fluorescence signal on the detection target, and transmits the radiation fluorescence signal, then the first channel of the imaging module images according to the thermal radiation signal of the first wavelength range emitted by the detection target to obtain the first thermal radiation image, the second channel images according to the radiation fluorescence signal of the second wavelength range transmitted by the light splitting module to obtain the first fluorescence image, and images according to the thermal radiation signal of the second wavelength range emitted by the detection target to obtain the second thermal radiation image, and the third channel images according to the radiation fluorescence signal of the third wavelength range transmitted by the light splitting module to obtain the second fluorescence image, the calculation and display module calculates and displays the temperature of different positions of the detection target according to the first fluorescence image, the second fluorescence image, the first thermal radiation image and the second thermal radiation image, realizes that the three channels of the imaging module respectively measure the thermal radiation signal and the radiation fluorescence signal of the three wavelength ranges related to the temperature of the detection target in the non-contact state to obtain the fluorescence signal image and the thermal radiation image, and further realizes that the medium-high temperature of the detection target is measured based on the thermal radiation image, and the medium-low temperature of the detection target is measured based on the fluorescence signal image, the temperature measuring range is wide, and the measurement precision is high.

[0070] According to the embodiment of the present application, the light splitting module reflects the laser to the detection target to excite the radiation fluorescence signal on the detection target, and transmits the radiation fluorescence signal, realizes that the laser is reflected and the radiation fluorescence signal is transmitted at the same time by using the same module, simplifies the temperature measuring device, and reduces the volume of the temperature measuring device.

[0071] According to the embodiment of the present application, the first channel of the imaging module is the R channel, the first wavelength range is 600-700nm, the second channel is the G channel, the second wavelength range is 500-600nm, and the third channel is the B channel, and the third wavelength range is 400-500nm, so that the imaging module can measure the thermal radiation signal and the radiation fluorescence signal of the wavelength range of 400-700nm related to the temperature of the detection target, thereby improving the temperature measuring range of the temperature field temperature measuring device based on the imaging module. BRIEF DESCRIPTION OF DRAWINGS

[0072] To more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0073] Figure 1 A schematic diagram of a temperature field measuring device according to an embodiment of the present invention is shown.

[0074] Figure 2 A schematic diagram of a temperature field measuring device according to another embodiment of the present invention is shown.

[0075] Figure 3 Schematic illustration Figure 2 A simplified schematic diagram of a temperature field measuring device in a [the environment].

[0076] Figure 4 Schematic illustration Figure 2 Another simplified schematic diagram of the temperature field measuring device in the image;

[0077] Figure 5 The transmission spectrum of the multispectral filter is illustrated schematically.

[0078] Figure 6 A flowchart illustrating a temperature measurement method according to an embodiment of the present invention is shown schematically.

[0079] Figure label:

[0080] 1-Laser Module

[0081] 2-Spectrum Module

[0082] 3-Imaging Module

[0083] 31-First Channel

[0084] 32-Second Channel

[0085] 33-Third Channel

[0086] 4-Calculation and Display Module

[0087] 5-Beam Expander Module

[0088] 6-Focusing Module

[0089] 7-Timing Control Module

[0090] 8-Multispectral Filters Detailed Implementation

[0091] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and the accompanying drawings.

[0092] Embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the description is only exemplary and is not intended to limit the scope of the present application. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present application. However, it will be apparent to one skilled in the art that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and techniques have been omitted in order to avoid obscuring the concepts of the present application.

[0093] The terms used herein are only intended to describe specific embodiments and are not intended to limit the present application. The terms "include", "comprise" and the like as used herein indicate the presence of the stated features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0094] All terms used herein, including technical and scientific terms, have the meanings commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted in a manner consistent with the context of the specification, and should not be interpreted in an idealized or overly formal manner.

[0095] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should be generally interpreted that the meaning of the expression is at least one of the items listed before the conjunction, without excluding others not listed (e.g., "a system having at least one of A, B, and C" should include, but not be limited to, a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc.). In the case of using expressions similar to "at least one of A, B, or C, etc.", it should be generally interpreted that the meaning of the expression is at least one of the items listed before the conjunction, without excluding others not listed (e.g., "a system having at least one of A, B, or C" should include, but not be limited to, a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc.).

[0096] In the non-contact thermal radiation thermometry technology, a single response band (e.g., visible light, near-infrared, or infrared) is generally used, but the technology has a limited temperature measurement range and is only suitable for medium and high temperature measurement, and it is difficult to achieve medium and low temperature measurement. Based on this, embodiments of the present application provide a temperature field temperature measurement device and method.

[0097] Figure 1A structural block diagram of a temperature field temperature measurement device according to an embodiment of the present application is shown schematically.

[0098] According to an embodiment of the present application, as shown in Figure 1 The temperature field temperature measurement device includes a laser module 1, a light splitting module 2, an imaging module 3, and a calculation and display module 4.

[0099] The laser module 1 is adapted to emit laser light.

[0100] The light splitting module 2 is adapted to reflect the laser light onto a detection target to excite a radiation fluorescence signal on the detection target, and transmit the radiation fluorescence signal.

[0101] The imaging module 3 includes a first channel 31, a second channel 32, and a third channel 33.

[0102] The first channel 31 is adapted to image a first wavelength range of thermal radiation signals emitted by the detection target to obtain a first thermal radiation image;

[0103] The second channel 32 is adapted to image a second wavelength range of radiation fluorescence signals transmitted by the light splitting module 2 to obtain a first fluorescence image, and image a second wavelength range of thermal radiation signals emitted by the detection target to obtain a second thermal radiation image;

[0104] The third channel 33 is adapted to image a third wavelength range of radiation fluorescence signals transmitted by the light splitting module 2 to obtain a second fluorescence image.

[0105] The calculation and display module 4 is adapted to calculate and display the temperature of different positions of the detection target according to the first fluorescence image, the second fluorescence image, the first thermal radiation image, and the second thermal radiation image.

[0106] The first wavelength range, the second wavelength range, and the third wavelength range are different from each other.

[0107] According to an embodiment of the present application, the temperature of the detection target includes a medium-low temperature and a medium-high temperature. The medium-low temperature can range from room temperature to 1200℃, and can be, for example, 20℃, 500℃, 1000℃, etc. The medium-high temperature can range from 800℃ to 1600℃, and can be, for example, 1000℃, 1200℃, 1500℃, etc.

[0108] According to an embodiment of the present application, the first wavelength range and the second wavelength range correspond to the medium-high temperature, and the second wavelength range and the third wavelength range correspond to the medium-low temperature.

[0109] According to an embodiment of the present application, the detection target can be a complex thermodynamic machine in the multi-disciplinary intersection of aerodynamics, thermodynamics, mechanics, materials science, etc., for example, can be an aero-engine.

[0110] According to an embodiment of the present application, the imaging module 3 can be a color Charge Coupled Device (CCD) imaging sensor or a Complementary Metal Oxide Semiconductor (CMOS) imaging sensor. For example, taking a color CCD imaging sensor as the imaging module, the R channel of the color CCD imaging sensor can be used as the first channel, the G channel can be used as the second channel, and the B channel can be used as the third channel. At this time, the R channel and the G channel of the color CCD imaging sensor can be used for imaging measurement of the thermal radiation of the detection target to obtain a first thermal radiation image and a second thermal radiation image, and the G channel and the B channel can be used for imaging measurement of the fluorescent radiation of the detection target to obtain a first fluorescent image and a second fluorescent image.

[0111] According to an embodiment of the present application, the surface of the detection target is sprayed with a fluorescent film layer. In the case that the laser irradiates the surface of the detection target sprayed with the fluorescent film layer, the temperature of the detection target will affect the light emission intensity or the light emission lifetime of the fluorescent film layer. Therefore, by imaging the fluorescent signal of the second wavelength range transmitted by the light splitting module according to the second channel 32, a first fluorescent image is obtained, and by imaging the fluorescent signal of the third wavelength range transmitted by the light splitting module 2 according to the third channel 33, a second fluorescent image is obtained. Subsequently, based on the first fluorescent image and the second fluorescent image, the medium-low temperature of the detection target can be obtained. This temperature measurement method can overcome the influence of the thermal environment and the emissivity of the detection target on temperature measurement, improve the accuracy of medium-low temperature measurement of the detection target, and is more suitable for non-contact high-precision measurement of the thermal end component with unknown emissivity or complex surface.

[0112] According to an embodiment of the present application, by imaging the thermal radiation signal of the first wavelength range emitted by the detection target according to the first channel, a first thermal radiation image is obtained, and by imaging the thermal radiation signal of the second wavelength range emitted by the detection target according to the second channel, a second thermal radiation image is obtained. Subsequently, based on the first thermal radiation image and the second thermal radiation image, the medium-high temperature of the detection target can be obtained, thereby improving the accuracy of medium-high temperature measurement of the detection target.

[0113] The temperature field temperature measuring device provided by the embodiment of the present application realizes the measurement of the thermal radiation signal and the radiation fluorescence signal of three wavelength ranges related to the temperature of the detection target by using three channels of the imaging module 3 respectively in a non-contact manner, obtains a fluorescence signal image and a thermal radiation image, and further realizes the measurement of the medium-high temperature of the detection target based on the thermal radiation image and the measurement of the medium-low temperature of the detection target based on the fluorescence signal image, so that the temperature measuring range is wide and the measurement precision is high.

[0114] According to the embodiment of the present application, the light splitting module 2 can be a light splitting prism or a light splitting sheet, and the embodiment of the present application does not limit the specific form of the light splitting module, which can be selected according to the actual situation.

[0115] According to the embodiment of the present application, the light splitting module 2 reflects the laser onto the detection target to excite the radiation fluorescence signal on the detection target, forms a reflected light path, and also transmits the radiation fluorescence signal to form a transmitted light path. The angle between the two light paths is 90°. For the reflected light path, the light splitting spectrum of the light splitting module can be 300nm-400nm, so that the laser can be reflected onto the detection target to excite the radiation fluorescence signal on the detection target. For the transmitted light path, the light splitting spectrum of the light splitting module can be 400nm-700nm, so that the radiation fluorescence signal can be transmitted.

[0116] According to the embodiment of the present application, the light splitting module 2 reflects the laser onto the detection target to excite the radiation fluorescence signal on the detection target, and transmits the radiation fluorescence signal, so that the same module can be used to reflect the laser and transmit the radiation fluorescence signal at the same time, which simplifies the temperature measuring device and reduces the volume of the temperature measuring device.

[0117] According to the embodiment of the present application, the computing and displaying module 4 includes a computing unit and a displaying unit.

[0118] The computing unit is suitable for calculating the temperatures of different positions of a part of the detection target according to the first fluorescence image and the second fluorescence image, and calculating the temperatures of different positions of another part of the detection target according to the first thermal radiation image and the second thermal radiation image.

[0119] The displaying unit is suitable for displaying the calculated temperatures of different positions of the detection target.

[0120] According to the embodiment of the present application, the part of the detection target can be a region of a medium-low temperature position of the detection target, and the other part of the detection target can be a region of a medium-high temperature position of the detection target.

[0121] According to the embodiment of the present application, in the case that the temperature of the detection target as a whole changes little, the part of the detection target and the other part of the detection target can be the same region.

[0122] According to the embodiment of the present application, the temperature of each position of the whole region of the detection target can be calculated according to the first fluorescent image and the second fluorescent image, and the temperature of each position of the whole region of the detection target can be calculated according to the first thermal radiation image and the second thermal radiation image. Then, the whole region of the detection target is divided into two regions according to the boundary between the medium-low temperature and the medium-high temperature.

[0123] According to the embodiment of the present application, the boundary between the medium-low temperature and the medium-high temperature can be, for example, 1000℃. At this time, the region less than 1000℃ is divided into a part of the region, the temperature of different positions of the region less than 1000℃ is represented by the temperature calculated according to the first fluorescent image and the second fluorescent image, and the region greater than 1000℃ is divided into another part of the region, the temperature of different positions of the region greater than 1000℃ is represented by the temperature calculated according to the first thermal radiation image and the second thermal radiation image.

[0124] According to the embodiment of the present application, the calculation unit can calculate the temperature of different positions of a part of the region of the detection target according to the first fluorescent image and the second fluorescent image, and calculate the temperature of different positions of another part of the region of the detection target according to the first thermal radiation image and the second thermal radiation image, so that the temperature of different positions of different regions of the detection target and different temperature ranges can be obtained by using the fluorescent image and the thermal radiation image, and the temperature change of different positions of different regions of the detection target can be monitored in real time.

[0125] According to the embodiment of the present application, the calculation of the temperature of different positions of a part of the region of the detection target according to the first fluorescent image and the second fluorescent image comprises:

[0126] obtaining the first luminous intensity of the first target imaging position (i, j) in the first fluorescent image;

[0127] obtaining the second luminous intensity of the first target imaging position (i, j) in the second fluorescent image; and

[0128] determining the temperature of the position of the part of the region of the detection target corresponding to the first target imaging position (i, j) according to the first luminous intensity and the second luminous intensity, and further determining the temperature of different positions of the part of the region of the detection target.

[0129] According to the embodiment of the present application, the temperature of the position of the detected target partial region corresponding to the first target imaging position (i, j) is determined according to the first luminescence intensity and the second luminescence intensity, and then the temperatures of different positions of the detected target partial region can be determined, so that the precision and speed of calculating the temperatures of different positions of the detected target partial region are improved.

[0130] According to the embodiment of the present application, the first luminescence intensity, the second luminescence intensity and the temperature of the position of the detected target partial region corresponding to the target imaging position (i, j) satisfy the relationship in formula (I).

[0131]

[0132] wherein A and B are coefficients; k is the Boltzmann constant; ΔE is the energy level difference between the thermal coupling energy level in the second channel and the thermal coupling energy level in the third channel, is the first luminescence intensity, is the second luminescence intensity, and Q i,j is the ratio of the fluorescence luminescence intensity, T i,j is the temperature of the position of the detected target partial region corresponding to the target imaging position (i, j).

[0133] According to the embodiment of the present application, the temperature of the target position of the other detected target partial region is calculated according to the first thermal radiation image and the second thermal radiation image, which comprises:

[0134] obtaining the third luminescence intensity of the second target imaging position (m, n) in the first thermal radiation image;

[0135] obtaining the fourth luminescence intensity of the second target imaging position (m, n) in the second thermal radiation image; and

[0136] determining the temperature of the position of the other detected target partial region corresponding to the second target imaging position (m, n) according to the third luminescence intensity and the fourth luminescence intensity, and then determining the temperatures of different positions of the other detected target partial region.

[0137] According to the embodiment of the present application, the temperature of the position of the other detected target partial region corresponding to the second target imaging position (m, n) is determined according to the third luminescence intensity and the fourth luminescence intensity, and then the temperatures of different positions of the other detected target partial region can be determined, so that the precision and speed of calculating the temperatures of different positions of the other detected target partial region are improved.

[0138] According to an embodiment of the present application, the third luminous intensity and the fourth luminous intensity satisfy the relationship in formula (two) and formula (three) between the temperature of the position of the other part of the region of the detection target corresponding to the second target imaging position (m, n).

[0139]

[0140]

[0141] wherein, is the third luminous intensity, is the fourth luminous intensity, and ε is the thermal radiation spectral emissivity of the detection target; T m,n is the temperature of the position of the other part of the region of the detection target corresponding to the second target imaging position (m, n); λ R is the spectral equivalent wavelength of the first channel, and λ G is the spectral equivalent wavelength of the second channel; I b (λ R , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ R ; I b (λ G , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ G .

[0142] Figure 2 A structural block diagram of a temperature field temperature measurement device according to another embodiment of the present application is schematically shown.

[0143] According to an embodiment of the present application, Figure 2 the functions of the structures with the same reference numerals in Figure 1 remain consistent.

[0144] According to an embodiment of the present application, as Figure 2 shown, the temperature field temperature measurement device further comprises a beam expanding module 5 between the light splitting module 2 and the laser module 1, and the beam expanding module 5 is suitable for expanding the laser emitted by the laser module 1.

[0145] According to an embodiment of the present application, the beam expanding module 5 can be a single lens, and can also be a lens group composed of multiple lenses, and the specific structure of the beam expanding module 5 is not limited in the embodiments of the present application, and can be selected according to actual conditions.

[0146] According to an embodiment of the present application, as Figure 2As shown in the figure, the temperature field measuring device further comprises a focusing module 6 between the light splitting module 2 and the imaging module 3, and the focusing module 6 is suitable for focusing the radiation fluorescence signal transmitted by the light splitting module and then inputting the radiation fluorescence signal into the imaging module 3.

[0147] According to the embodiment of the present application, the focusing module 6 can be a single lens, and can also be a lens group composed of multiple lenses, and the embodiment of the present application does not limit the specific structure of the focusing module, and can be selected according to the actual situation.

[0148] According to the embodiment of the present application, as shown in the figure, Figure 2 The temperature field measuring device further comprises a timing control module 7 suitable for controlling the laser module 1, the calculation and display module 4 and the imaging module 3.

[0149] Figure 3 A simple schematic diagram of the temperature field measuring device in Figure 2 is schematically shown. Figure 4 Another simple schematic diagram of the temperature field measuring device in Figure 2 is schematically shown.

[0150] As shown in the figure, Figures 3-4 or Figure 1 The focusing module 6 and the imaging module 3 in Figure 2 have two implementation modes, one is a color CCD camera implementation, and the other is to use three cameras with different channels. Specifically, as shown in the figure, Figure 3 The focusing module 6 can be a lens, and the imaging module 3 can be an RGB camera, and the lens and the RGB camera constitute a color CCD camera. Or, as shown in the figure, Figure 4 The focusing module 6 and the imaging module 3 can also be implemented by using 3 non-color cameras.

[0151] In addition, as shown in the figure, Figures 3-4 Figures 1-2 ​The beam expander module in the beam expander module can include a mirror, a concave lens and a convex lens arranged in sequence along the light path. A multi-spectral filter 8 can also be arranged between the beam splitter module 2 and the focusing module 6 for performing one-time beam splitting on the radiated fluorescent signal and the thermal radiation signal entering the imaging module. Taking the case of the focusing module 6 and the imaging module 3 forming a color CCD camera as an example, the RGB camera has three channels of 600-700nm, 500-600nm and 400-500nm. The spectral width of the G and B channels of the camera is 100nm, and the radiated fluorescent signal usually has a narrow spectral distribution, and the mismatch between the two will cause the fluorescent signal measurement error to increase, so we propose to add a multi-spectral filter 8 in front of the focusing module 6 to filter light and modulate the spectral width of the RGB channel of the color CCD camera. In addition, the advantage of introducing the multi-spectral filter 8 is that for different types of fluorescent signals, by replacing the multi-spectral filter 8, the effective measurement of different types of radiated fluorescent signals can be realized without changing the other configurations of the system, greatly improving the flexibility of the system. For the case of the focusing module 6 and the imaging module 3 being three non-color CCD cameras, the multi-spectral filter is still applicable. The transmission spectrum of the multi-spectral filter 8 is shown in Figure 5 As can be seen from the figure, the multi-spectral filter 8 has a narrower spectral transmittance in the range of 400-500nm and 500-600nm.

[0152] According to the embodiment of the present application, the timing control module can control the laser module to emit laser, at this time, the temperature field temperature measuring device is in the fluorescent radiation imaging measurement mode.

[0153] According to the embodiment of the present application, in the fluorescent radiation imaging measurement mode, the timing control module 7 controls the laser module to emit laser, and then sends a signal to the imaging module 3 to control the imaging module 3 to collect the first fluorescent image and the second fluorescent image.

[0154] According to the embodiment of the present application, in the case that the imaging module 3 has collected the first fluorescent image and the second fluorescent image, the timing control module 7 can control the laser module to turn off the laser, at this time, the temperature field temperature measuring device is in the thermal radiation imaging measurement mode.

[0155] According to the embodiment of the present application, in the thermal radiation imaging measurement mode, the timing control module 7 controls the laser module to turn off the laser, and then sends a signal to the imaging module 3 to control the imaging module 3 to collect the first thermal radiation image and the second thermal radiation image.

[0156] According to the embodiment of the present application, after the imaging module 3 collects the first thermal radiation image and the second thermal radiation image, the timing control module 7 sends a signal to the calculation and display module 4 to control the calculation and display module 4 to calculate and display the temperature of different positions of the detection target according to the first fluorescent image, the second fluorescent image, the first thermal radiation image and the second thermal radiation image.

[0157] According to the embodiment of the present application, after the calculation and display module 4 calculates and displays the temperature of different positions of the detection target, the timing control module 7 can control the laser module 1, the imaging module 3 and the calculation and display module 4 to perform the next round of temperature detection on the detection target, so as to realize real-time detection of the temperature of the detection target.

[0158] According to the embodiment of the present application, the acquisition frequency of the imaging module 3 is twice the switching modulation frequency of the laser.

[0159] According to the embodiment of the present application, the acquisition frequency of the imaging module 3 is twice the switching modulation frequency of the laser, which can ensure that the imaging module 3 collects the first fluorescent image and the second fluorescent image when the laser is on, and collects the first thermal radiation image and the second thermal radiation image when the laser is off, thereby ensuring that the temperature of the detection target can be calculated using the first fluorescent image, the second fluorescent image, the first thermal radiation image and the second thermal radiation image subsequently.

[0160] According to the embodiment of the present application, the first channel is an R channel, the first wavelength range is 600-700nm, the second channel is a G channel, the second wavelength range is 500-600nm, and the third channel is a B channel, and the third wavelength range is 400-500nm.

[0161] According to the embodiment of the present application, since the first channel of the imaging module 3 is an R channel, the first wavelength range is 600-700nm, the second channel is a G channel, the second wavelength range is 500-600nm, the third channel is a B channel, and the third wavelength range is 400-500nm, the imaging module 3 can measure thermal radiation signals and radiation fluorescent signals with a wavelength range of 400-700nm related to the temperature of the detection target, thereby increasing the range of the temperature measurement area of the temperature field temperature measurement device based on the imaging module 3.

[0162] According to the embodiment of the present application, the switching modulation frequency of the laser is 1-30Hz.

[0163] According to the embodiment of the present application, the switching modulation frequency of the laser needs to match the acquisition frequency of the imaging module 3, so that the imaging module 3 can collect two images in the case of turning on and off the laser.

[0164] According to an embodiment of the present application, the wavelength of the laser ranges from 300 nm to 400 nm.

[0165] According to an embodiment of the present application, the wavelength of the laser ranges from 300 nm to 400 nm, which can ensure that the fluorescent film layer on the detection target emits fluorescent light with a clear first fluorescent image and a second fluorescent image under excitation of the laser with the wavelength ranging from 300 nm to 400 nm, and further ensure the accuracy of the temperature of the detection target calculated based on the first fluorescent image and the second fluorescent image.

[0166] According to an embodiment of the present application, the wavelength of the laser may, for example, be 320 nm, 350 nm, and 380 nm. For example, a 355 nm ultraviolet high-power laser can be selected to emit a 355 nm laser.

[0167] Figure 6 A flowchart of a temperature measurement method according to an embodiment of the present application is shown schematically.

[0168] As shown in FIG. 5, Figure 6 the method includes operations S501-S506.

[0169] In operation 601, the laser emitted by the laser module 1 is reflected onto the detection target by the light splitting module 2 to excite a fluorescent signal, and the fluorescent signal is transmitted by the light splitting module 2.

[0170] In operation 602, the fluorescent signal with the second wavelength range transmitted by the light splitting module 2 is imaged by the second channel to obtain a first fluorescent image.

[0171] In operation 603, the fluorescent signal with the third wavelength range transmitted by the light splitting module 2 is imaged by the third channel to obtain a second fluorescent image.

[0172] In operation 604, the first thermal radiation signal emitted by the detection target is imaged by the first channel to obtain a first thermal radiation image.

[0173] In operation 605, the second thermal radiation signal emitted by the detection target is imaged by the second channel to obtain a second thermal radiation image.

[0174] In operation 606, the first fluorescent image, the second fluorescent image, the first thermal radiation image, and the second thermal radiation image are used by the calculation and display module to calculate and display the temperature of different positions of the detection target.

[0175] According to an embodiment of the present application, the temperature of the detection target includes a medium-low temperature and a medium-high temperature. The medium-low temperature can range from room temperature to 1200 DEG C, and can be, for example, 20 DEG C, 500 DEG C, 1000 DEG C, etc. The medium-high temperature can range from 800 DEG C to 1600 DEG C, and can be, for example, 1000 DEG C, 1200 DEG C, 1500 DEG C, etc.

[0176] According to an embodiment of the present application, the first wavelength range and the second wavelength range correspond to the medium-high temperature, and the second wavelength range and the third wavelength range correspond to the medium-low temperature.

[0177] According to an embodiment of the present application, the detection target can be a complex thermomechanical device in the field of aerodynamics, thermology, mechanics, material science, etc., and can be, for example, an aeroengine.

[0178] According to an embodiment of the present application, the surface of the detection target is sprayed with a fluorescent film layer. In the case that laser light is irradiated on the surface of the detection target sprayed with the fluorescent film layer, the temperature of the detection target will affect the light-emitting intensity or the light-emitting lifetime of the fluorescent film layer. Therefore, by imaging the fluorescent signal of the second wavelength range transmitted by the light splitting module 2 through the second channel 32, a first fluorescent image is obtained, and by imaging the fluorescent signal of the third wavelength range transmitted by the light splitting module 2 through the third channel 33, a second fluorescent image is obtained, and the medium-low temperature of the detection target can be obtained based on the first fluorescent image and the second fluorescent image subsequently. This temperature measurement method can overcome the influence of the thermal environment and the emissivity of the detection target on temperature measurement, and improve the accuracy of medium-low temperature measurement of the detection target.

[0179] According to an embodiment of the present application, by imaging the thermal radiation signal of the first wavelength range emitted by the detection target through the first channel 31, a first thermal radiation image is obtained, and by imaging the thermal radiation signal of the second wavelength range emitted by the detection target through the second channel 32, a second thermal radiation image is obtained, and the medium-high temperature of the detection target can be obtained based on the first thermal radiation image and the second thermal radiation image subsequently, thereby improving the accuracy of medium-high temperature measurement of the detection target.

[0180] According to the temperature measurement method provided by the embodiment of the present application, the thermal radiation signal, the fluorescent signal and the thermal radiation signal of three wavelength ranges related to the temperature of the detection target are measured by three channels respectively in a non-contact manner, and the fluorescent signal image and the thermal radiation image are obtained, and then the medium-high temperature of the detection target is measured based on the thermal radiation image, and the medium-low temperature of the detection target is measured based on the fluorescent signal image, so that the temperature measurement range is wide and the measurement accuracy is high.

[0181] According to an embodiment of the present application, before operation S601, the temperature measurement method further includes;

[0182] opening the laser module 1 and the second channel of the imaging module 3 and the third channel of the imaging module 3;

[0183] Before operation S604, the temperature measurement method further comprises:

[0184] closing the laser module 1 and opening the first channel 31 and the second channel 32 of the imaging module 3.

[0185] According to an embodiment of the present application, operation S606 specifically comprises:

[0186] calculating and displaying the temperatures of different positions of a part of the detection target according to the first fluorescent image and the second fluorescent image by using the calculation and display module 4;

[0187] calculating and displaying the temperatures of different positions of another part of the detection target according to the first thermal radiation image and the second thermal radiation image by using the calculation and display module 4;

[0188] obtaining the temperatures of different positions of the detection target according to the temperatures of different positions of the part of the detection target and the temperatures of different positions of the another part of the detection target.

[0189] According to an embodiment of the present application, calculating the temperatures of different positions of the part of the detection target according to the first fluorescent image and the second fluorescent image by using the calculation and display module 4 can comprise the following operations:

[0190] obtaining the first luminous intensity of the first target imaging position (i, j) in the first fluorescent image;

[0191] obtaining the second luminous intensity of the first target imaging position (i, j) in the second fluorescent image; and

[0192] determining the temperature of the position of the part of the detection target corresponding to the first target imaging position (i, j) according to the first luminous intensity and the second luminous intensity, and further determining the temperatures of different positions of the part of the detection target.

[0193] According to an embodiment of the present application, by obtaining the first luminous intensity of the first target imaging position (i, j) in the first fluorescent image, then obtaining the second luminous intensity of the first target imaging position (i, j) in the second fluorescent image, and then determining the temperature of the position of the part of the detection target corresponding to the first target imaging position (i, j) according to the first luminous intensity and the second luminous intensity, the temperatures of different positions of the part of the detection target can be determined, and the precision and speed of calculating the temperatures of different positions of the part of the detection target are improved.

[0194] According to an embodiment of the present application, the first luminous intensity, the second luminous intensity and the temperature of the position of the detected target sub-region corresponding to the target imaging position (i, j) satisfy the relationship in formula (four).

[0195]

[0196] wherein A and B are coefficients; k is the Boltzmann constant; ΔE is the energy level difference between the thermal coupling energy level in the second channel and the thermal coupling energy level in the third channel, is the first luminous intensity, is the second luminous intensity, Q i,j is the fluorescence luminous intensity ratio, T i,j is the temperature of the position of the detected target sub-region corresponding to the target imaging position (i, j).

[0197] According to an embodiment of the present application, the formula (four) and the formula (one) are the same formula.

[0198] According to an embodiment of the present application, the temperature of the position of the detected target sub-region corresponding to the target imaging position (i, j) is calculated by the calculating and displaying module according to the first thermal radiation image and the second thermal radiation image, comprising:

[0199] obtaining the third luminous intensity of the second target imaging position (m, n) in the first thermal radiation image;

[0200] obtaining the fourth luminous intensity of the second target imaging position (m, n) in the second thermal radiation image; and

[0201] determining the temperature of the position of the detected target sub-region corresponding to the second target imaging position (m, n) according to the third luminous intensity and the fourth luminous intensity, and further determining the temperatures of different positions of the detected target sub-region.

[0202] According to an embodiment of the present application, by obtaining the third luminous intensity of the second target imaging position (m, n) in the first thermal radiation image, and further obtaining the fourth luminous intensity of the second target imaging position (m, n) in the second thermal radiation image, and then determining the temperature of the position of the detected target sub-region corresponding to the second target imaging position (m, n) according to the third luminous intensity and the fourth luminous intensity, the temperatures of different positions of the detected target sub-region can be determined, and the accuracy and speed of calculating the temperatures of different positions of the detected target sub-region are improved.

[0203] According to an embodiment of the present application, the third luminous intensity and the fourth luminous intensity and the temperature of the position of the detected target sub-region corresponding to the second target imaging position (m, n) satisfy the relationship in formula (five) and formula (six).

[0204]

[0205]

[0206] wherein, is the third luminous intensity, is the fourth luminous intensity, and ε is the thermal radiation spectral emissivity of the detection target; T m,n is the temperature of the position of another partial area of the detection target corresponding to the second target imaging position (m, n); λ R is the spectral equivalent wavelength of the R channel, λ G is the spectral equivalent wavelength of the G channel; I b (λ R , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ R , I b (λ G , T m,n ) represents the blackbody spectral radiation intensity distribution function at temperature T m,n and wavelength λ G .

[0207] According to an embodiment of the present application, formula (two) and formula (five) are the same formula, and formula (three) and formula (six) are the same formula.

[0208] It should be noted that, unless it is explicitly stated that there is an execution sequence between different operations or there is an execution sequence in the technical implementation of different operations, the execution sequence between multiple operations can not be distinguished, and multiple operations can be executed simultaneously.

[0209] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A temperature field measuring device, comprising: Laser module, suitable for emitting laser light; A beam-splitting module is adapted to reflect the laser onto a detection target to excite a radiofluorescence signal on the detection target and transmit the radiofluorescence signal. Imaging module, including: The first channel is used to image the thermal radiation signal emitted by the target in a first wavelength range to obtain a first thermal radiation image. The second channel is adapted to image a first fluorescence image based on the radiation fluorescence signal in the second wavelength range transmitted through the beam splitter, and to image a second thermal radiation image based on the thermal radiation signal in the second wavelength range emitted by the target. The third channel is suitable for imaging based on the radiation fluorescence signal in the third wavelength range after transmission through the beam-splitting module, to obtain a second fluorescence image; and The calculation and display module is adapted to calculate and display the temperature at different locations of the detected target based on the first fluorescence image, the second fluorescence image, the first thermal radiation image, and the second thermal radiation image; the calculation and display module includes: The calculation unit is adapted to calculate the temperature at different locations in a portion of the detected target based on the first fluorescence image and the second fluorescence image, and to calculate the temperature at different locations in another portion of the detected target based on the first thermal radiation image and the second thermal radiation image; and The display unit is suitable for displaying the calculated temperature at different locations of the probe target; The first wavelength range, the second wavelength range, and the third wavelength range are all different; Calculating the temperature at different locations within a portion of the detected target based on the first fluorescence image and the second fluorescence image includes: Obtain the first emission intensity of the first target imaging position in the first fluorescence image; Obtain the second luminescence intensity of the first target imaging location in the second fluorescence image; and Based on the first luminous intensity and the second luminous intensity, the temperature of the location of the detected target portion area corresponding to the first target imaging location is determined, and then the temperature of different locations of the detected target portion area is determined; The first luminous intensity, the second luminous intensity, and the first target imaging position The temperature at the corresponding locations of the target area satisfies the following relationship: in, It is the imaging position of the first target. and It is a coefficient. It is Boltzmann's constant. The energy level difference between the thermally coupled energy levels in the second channel and the third channel is given. The first luminous intensity, The second luminous intensity, The ratio of fluorescence intensity is 1. To the imaging position of the first target The temperature of the corresponding area of ​​the target region; The temperature of the target location in another part of the detected target area, calculated based on the first thermal radiation image and the second thermal radiation image, includes: Obtain the third luminescence intensity of the second target imaging position in the first thermal radiation image; Obtain the fourth luminescence intensity of the second target imaging position in the second thermal radiation image; and, Based on the third luminous intensity and the fourth luminous intensity, the temperature of the location of another part of the detection target corresponding to the imaging location of the second target is determined, and then the temperature of different locations of the other part of the detection target is determined; The third luminous intensity and the fourth luminous intensity are related to the second target imaging position. The temperature at the location of another part of the corresponding detection target area satisfies the following relationship: in, It is the imaging position of the second target. It is the third luminous intensity. It is the fourth luminous intensity, It is the thermal radiation spectral emissivity of the target being detected; To the imaging position of the second target The temperature of another part of the corresponding detection target area; It is the spectral equivalent wavelength of the first channel. It is the spectral equivalent wavelength of the second channel; Indicates temperature , wavelength is The blackbody spectral radiance distribution function at time , Indicates temperature , wavelength is The blackbody spectral radiation intensity distribution function at time t.

2. The temperature field measuring device according to claim 1, characterized in that, A beam expander module is also included between the beam splitter module and the laser module. The beam expander module is adapted to expand the laser beam emitted by the laser module.

3. The temperature field measuring device according to claim 1, characterized in that, A focusing module is also included between the beam splitting module and the imaging module. The focusing module is adapted to focus the radiation fluorescence signal transmitted by the beam splitting module and then input it to the imaging module.

4. The temperature field measuring device according to claim 1, characterized in that, It also includes a timing control module, which is suitable for controlling the laser module, the computing and display module and the imaging module.

5. The temperature field measuring device according to claim 1, characterized in that, The acquisition frequency of the imaging module is twice the switching modulation frequency of the laser.

6. The temperature field measuring device according to claim 1, characterized in that, The first channel is an R channel with a wavelength range of 600-700nm, the second channel is a G channel with a wavelength range of 500-600nm, and the third channel is a B channel with a wavelength range of 400-500nm.

7. The temperature field measuring device according to claim 1, characterized in that, The switching modulation frequency of the laser is 1-30Hz.

8. The temperature field measuring device according to claim 1, characterized in that, The wavelength range of the laser is 300-400nm.

9. A temperature measurement method, utilizing the temperature field measuring device according to any one of claims 1-8, the temperature measurement method comprising: The laser emitted by the laser module is reflected onto the detection target using a beam splitter module to excite a radiation fluorescence signal on the detection target, and the radiation fluorescence signal is transmitted using the beam splitter module. The second channel is used to image the radiation fluorescence signal in the second wavelength range after transmission from the beam splitter module to obtain a first fluorescence image; The third channel is used to image the radiation fluorescence signal in the third wavelength range after transmission from the beam splitter module to obtain a second fluorescence image; The first thermal radiation image is obtained by imaging the thermal radiation signal emitted by the target in a first wavelength range using the first channel. The second channel is used to image the thermal radiation signal emitted by the target in the second wavelength range to obtain a second thermal radiation image; Using the calculation and display module, the temperature at different locations of the detected target is calculated and displayed based on the first fluorescence image, the second fluorescence image, the first thermal radiation image, and the second thermal radiation image.

10. The temperature measurement method according to claim 9, characterized in that, Before emitting laser light using the laser module, the temperature measurement method further includes: Turn on the second channel of the laser module and the third channel of the imaging module; Before using the first channel to image the thermal radiation signal emitted by the target within a first wavelength range to obtain a first thermal radiation image, the temperature measurement method further includes: The laser module is turned off, and the first and second channels of the imaging module are turned on.

11. The temperature measurement method according to claim 9, characterized in that, The temperature at different locations of the detected target is calculated and displayed based on the first fluorescence image, the second fluorescence image, the first thermal radiation image, and the second thermal radiation image, including: The calculation and display module calculates and displays the temperature at different locations in a portion of the detected target based on the first fluorescence image and the second fluorescence image; The calculation and display module calculates and displays the temperature at different locations in another part of the detected target based on the first thermal radiation image and the second thermal radiation image; The temperature at different locations of the target is obtained based on the temperature at different locations in one part of the target and the temperature at different locations in another part of the target.

12. The temperature measurement method according to claim 11, characterized in that, The calculation and display module calculates the temperature at different locations within a portion of the detected target based on the first fluorescence image and the second fluorescence image, including: Obtain the first emission intensity of the first target imaging position in the first fluorescence image; Obtain the second luminescence intensity of the first target imaging location in the second fluorescence image; and Based on the first luminous intensity and the second luminous intensity, the temperature of the location of the detection target portion area corresponding to the first target imaging location is determined, and then the temperature of different locations of the detection target portion area is determined.

13. The temperature measurement method according to claim 12, characterized in that, The first luminous intensity, the second luminous intensity, and the first target imaging position The temperature at the corresponding locations of the target area satisfies the following relationship: in, It is the imaging position of the first target; and It is a coefficient; It is the Boltzmann constant; The energy level difference between the thermally coupled energy levels in the second channel and the third channel is given. The first luminous intensity, The second luminous intensity, The ratio of fluorescence intensity is 1. To the imaging position of the first target The temperature of the corresponding area of ​​the target region.

14. The temperature measurement method according to claim 11, characterized in that, The temperature of another part of the target location in the detection target area is calculated by the calculation and display module based on the first thermal radiation image and the second thermal radiation image, including: Obtain the third luminescence intensity of the second target imaging position in the first thermal radiation image; Obtain the fourth luminescence intensity of the second target imaging position in the second thermal radiation image; and Based on the third luminous intensity and the fourth luminous intensity, the temperature of the location of another part of the detection target corresponding to the imaging position of the second target is determined, and then the temperature of different locations of the other part of the detection target is determined.

15. The temperature measurement method according to claim 14, characterized in that, The third luminous intensity and the fourth luminous intensity are related to the second target imaging position. The temperature at the location of another part of the corresponding detection target area satisfies the following relationship: in, This is the imaging location of the second target. It is the third luminous intensity. It is the fourth luminous intensity. It is the thermal radiation spectral emissivity of the target being detected; To the imaging position of the second target The temperature of another part of the corresponding detection target area; It is the spectral equivalent wavelength of the first channel. It is the spectral equivalent wavelength of the second channel; Indicates temperature , wavelength is The blackbody spectral radiance distribution function at time , Indicates temperature , wavelength is The blackbody spectral radiation intensity distribution function at time t.

Images