Total temperature phosphorescence measurement method and system insensitive to incoming flow angle

Abstract

The invention relates to a total temperature phosphorescence measurement method and system insensitive to an incoming flow angle. The method comprises the following steps: generating an excitation light signal and irradiating the excitation light signal on a sensing sheet which is arranged on a to-be-measured fluid passage and is provided with a temperature-sensitive phosphorescence material layer; acquiring image data after the temperature-sensitive phosphorescent material layer is excited; based on the image data, obtaining temperature distribution information of the sensing sheet by using a preset relationship between phosphorescence lifetime and temperature; and selecting the highest temperature from the temperature distribution information as the measured total temperature. Compared with the prior art, the total temperature is obtained by extracting the maximum temperature value, the sensitivity to the incoming flow angle is further reduced by adopting the optimized design of the air inlet hole and the air outlet hole, and in addition, the environmental influence is reduced by adopting the temperature measurement method of the phosphorescence lifetime.

Description

Technical Field

[0001] The invention relates to the technical field of temperature measurement, and in particular to a total temperature phosphorescence measurement method and system which are insensitive to incoming flow angle. Background Art

[0002] A total temperature probe is a sensor used to measure the total temperature of a fluid (such as air or gas). Existing total temperature probes are very sensitive to the incoming flow angle during the measurement process. During the measurement process, the incoming flow angle often changes, and it is difficult to ensure that the incoming flow is always positive relative to the probe. Therefore, the existing total temperature probes have poor adaptability when facing variable airflow directions. Especially in high-speed aircraft, wind tunnel tests and other dynamic environments, the airflow direction may change rapidly, which places higher requirements on the measurement accuracy of the total temperature probe. However, due to the sensitivity of existing probes to the incoming flow angle, their performance in these applications is often less than ideal. In addition, since the measurement results of the probe depend on the relative angle between the airflow and the probe surface, this angle dependence will lead to an increase in measurement errors. Specifically, when the airflow hits the probe at different angles, the temperature distribution on the probe surface will change, thereby affecting the accuracy of the temperature measurement.

[0003] The above errors may come from the following aspects: (1) In the aerodynamic heating effect, the different degrees of aerodynamic heating caused by different airflow impact angles cause the measured temperature to deviate from the actual temperature. (2) Uneven heat dissipation: Airflow impact at different angles may cause different heat dissipation on the probe surface, further increasing the uncertainty of temperature measurement. (3) Flow field disturbance: Changes in the incoming flow angle may cause disturbances in the flow field around the probe, resulting in fluctuations in the measurement results. Due to the sensitivity to the incoming flow angle, the existing total temperature probe is subject to certain restrictions during installation and deployment. The probe must be installed at a specific angle to ensure that the airflow can directly impact the probe surface. This installation restriction may affect the application of the probe in complex environments, especially in scenarios where the probe position needs to be flexibly adjusted. In order to reduce the impact of the incoming flow angle on the measurement results, the existing total temperature probe requires complex calibration and correction, which not only increases the complexity of data processing, but may also introduce additional uncertainties.

[0004] In summary, there is currently a lack of a total temperature measurement probe to solve or partially solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a total temperature phosphorescence measurement method and system that is insensitive to the incoming flow angle, so as to solve or partially solve the problem of inaccurate measurement results caused by the sensitivity of the incoming flow angle.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] One aspect of the present invention provides a total temperature phosphorescence measurement method that is insensitive to the incoming flow angle, comprising the following steps:

[0008] Step S1, generating an excitation light signal and irradiating a sensor sheet with a temperature-sensitive phosphorescent material layer disposed on a fluid passage to be measured;

[0009] Step S2, obtaining image data after the temperature-sensitive phosphorescent material layer is excited;

[0010] Step S3, based on the image data, using a preset relationship between phosphorescence lifetime and temperature, obtaining temperature distribution information of the sensor sheet;

[0011] Step S4, selecting the highest temperature from the temperature distribution information as the measured total temperature.

[0012] As a preferred technical solution, the process of obtaining the relationship between the phosphorescence lifetime and the temperature includes:

[0013] The temperature is measured, the phosphorescence signal is collected and recorded, and the lifetime is calculated. The collected temperature is matched to the phosphorescence lifetime one by one to obtain a calibration curve of phosphorescence lifetime and temperature.

[0014] As a preferred technical solution, the excitation light signal is an ultraviolet laser with a wavelength of 260-410nm and a power of 0.1-15W.

[0015] Another aspect of the present invention provides a total temperature phosphorescence measurement system that is insensitive to the incoming flow angle, which is used to implement the above-mentioned total temperature phosphorescence measurement method that is insensitive to the incoming flow angle. The total temperature phosphorescence measurement system includes:

[0016] The probe head has a passage inside along the axial direction, and an air inlet and an air outlet are opened on the probe head;

[0017] A sensor sheet is located in the channel and connected to the probe head, the sensor sheet is provided with a sensor sheet through hole, a temperature-sensitive phosphorescent material layer is provided on one side of the sensor sheet, and the air inlet, the sensor sheet and the air outlet form a fluid passage;

[0018] A lens, located in the channel and facing the temperature-sensitive phosphorescent material layer of the sensor sheet;

[0019] A signal emitting unit, used for generating an excitation light signal and exciting the temperature-sensitive phosphorescent material layer;

[0020] A signal receiving unit, used for receiving image data captured by the lens after the temperature-sensitive phosphorescent material layer is excited;

[0021] The data processing unit is used to obtain the temperature distribution information of the sensor piece based on the image data and using the preset relationship between the phosphorescence lifetime and the temperature, and select the highest temperature as the total temperature to be measured.

[0022] As a preferred technical solution, it includes a plurality of the air inlet holes, and the plurality of air inlet holes are arranged at intervals along the circumference of the probe head, the diameter of the air inlet holes is 0.6mm-5mm, the distance between the center line of the air inlet holes and the top of the probe head is 1mm-5mm, the center lines of the plurality of air inlet holes are perpendicular to the axis of the channel and intersect at the center of the circumferential cylindrical surface, and the angle between the axes of adjacent air inlet holes is 15°-60°.

[0023] As a preferred technical solution, the diameter of the channel is 1.5mm-10mm.

[0024] As a preferred technical solution, it includes multiple air outlet holes, and the multiple air outlet holes are circumferentially arranged on the opposite side of the air inlet hole, the diameter of the air outlet holes is 0.3mm-3mm, the center lines of the air outlet holes are parallel and perpendicular to the axis of the cylinder, and the distance between the center lines of the air outlet holes and the top of the probe head is 6mm-18mm.

[0025] As a preferred technical solution, the temperature-sensitive phosphorescent material layer is MFG, Y2O3:Eu, YSZ:Eu, YVO4:Dy or YAG:Dy, and has a thickness of 0.001 mm to 0.01 mm.

[0026] As a preferred technical solution, the signal transmitting unit includes a light source, an optical fiber and a collimating lens.

[0027] As a preferred technical solution, the signal receiving unit includes a filter.

[0028] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0029] (1) Obtaining the total temperature by extracting the maximum temperature to reduce sensitivity to the incoming flow angle: The present invention collects image data after the temperature-sensitive phosphorescent material layer is excited, and uses the preset relationship between the phosphorescence lifetime and the temperature to obtain the temperature distribution information of the entire sensor sheet. The highest temperature is selected as the total temperature to be measured. By recording the maximum temperature, the influence of the incoming flow angle can be effectively reduced.

[0030] (2) Reducing environmental impact by adopting a temperature measurement method based on phosphorescence lifetime: The present invention avoids the influence of the measurement environment and the gray body radiation emission coefficient of the surface of the measurement object and the influence of the measurement viewing angle by adopting a temperature measurement method based on phosphorescence lifetime.

[0031] (3) Further reducing the sensitivity to the incoming flow angle by adopting optimized air inlet and outlet design: The present invention arranges multiple air inlet holes at intervals along the circumference of the probe head, the center lines of the multiple air inlet holes are perpendicular to the axis of the channel and intersect at the center of the circumferential cylindrical surface, the angle between the axes of adjacent air inlet holes is 15°-60°, and multiple air outlet holes are arranged circumferentially on opposite sides of the air inlet holes, the center lines of the air outlet holes are parallel and perpendicular to the axis of the cylinder, respectively, so as to further reduce the influence of the incoming flow angle by optimizing the incoming flow angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Flow chart of the total temperature phosphorescence measurement method insensitive to the incoming flow angle in the embodiment;

[0033] Figure 2 Schematic diagram of a total temperature phosphorescence measurement system insensitive to incoming flow angle in an embodiment;

[0034] Figure 3 Schematic diagram of the structure of the total temperature phosphorescence measurement probe insensitive to the incoming flow angle in the embodiment;

[0035] Figure 4 for Figure 3 Schematic diagram of the middle sensor sheet, sensor sheet through hole and temperature-sensitive phosphorescent material layer;

[0036] Figure 5 for Figure 3 Left view of

[0037] Figure 6 for Figure 3 Right view of;

[0038] Figure 7 for Figure 3 A-direction view;

[0039] Figure 8 for Figure 3 B-direction view;

[0040] Fig. 9 for Figure 3 C-direction view;

[0041] Fig.10 This is a graph showing the variation of the total temperature measured by the probe with the incoming flow deflection angle in the embodiment (total temperature 373K);

[0042] Among them, 1-probe head, 2-probe support rod, 3-air inlet, 4-air outlet, 5-channel, 6-sensor sheet, 7-sensor sheet through hole, 8-temperature sensitive phosphorescent material layer, 9-lens. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] Example 1

[0046] In view of the problems existing in the above-mentioned prior art, this embodiment provides a total temperature phosphorescence measurement method which is insensitive to the incoming flow angle. Figure 1 , the method comprises the following steps:

[0047] Step S1, generating an excitation light signal and irradiating a sensor sheet with a temperature-sensitive phosphorescent material layer disposed on a fluid passage to be measured.

[0048] In this embodiment, the excitation light signal is an ultraviolet laser with a wavelength of 260-410 nm and a power of 0.1-15 W.

[0049] Step S2, obtaining image data after the temperature-sensitive phosphorescent material layer is excited.

[0050] Step S3, based on the image data, using the preset relationship between phosphorescence lifetime and temperature, obtain the temperature distribution information of the sensor sheet.

[0051] The process of obtaining the relationship between phosphorescence lifetime and temperature is to measure the temperature, collect and record the phosphorescence signal and calculate the lifetime, and correspond the collected temperature to the phosphorescence lifetime one by one to obtain a calibration curve of phosphorescence lifetime and temperature.

[0052] Step S4, selecting the highest temperature from the temperature distribution information as the measured total temperature.

[0053] In addition, this embodiment also provides a total temperature phosphorescence measurement system that is insensitive to the incoming flow angle, see Figure 2The system mainly includes: a probe 01 including a fisheye lens and a temperature-sensitive phosphor layer, a signal transmitting unit 02, a signal receiving unit 03 and a data processing unit 04.

[0054] See also Figure 3 The schematic diagram of the structure of the probe is shown in FIG. 01. The probe 01 includes a probe head 1, a probe support rod 2, an air inlet 3, an air outlet 4, a channel 5, a sensor sheet 6, a sensor sheet through hole 7, a temperature-sensitive phosphorescent material layer 8, and a lens 9. The probe housing is made of high-temperature resistant and corrosion-resistant materials to adapt to various complex environments. Each part will be described separately below.

[0055] The probe head 1 is composed of a cylinder and a fast convergence curve rotating body. The probe head 1 has an air inlet 3 on the side facing the mainstream and an air outlet 4 on the side facing away from the mainstream. The probe head 1 has a circular channel 5 axially inside, and the channel 5 runs through the entire probe. A sensor sheet 6 is installed in the channel 5, and a temperature-sensitive phosphorescent material layer 8 is sprayed on the lower surface of the sensor sheet 6. A fisheye lens 9 is installed in the circular channel 5 below the sensor sheet 6.

[0056] Preferably, the diameter d of the cylinder of the probe head 1 is 3-10mm, and 7mm is selected in this embodiment, and the length is 10mm-45mm, and 20mm is selected in this embodiment. The curved rotating body is formed by rotating a double twisted wire, and the diameter of the channel 5 in the probe head 1 is 1.5mm-10mm, and 6mm is selected in this embodiment.

[0057] See also Figure 5 The cylindrical body of the probe head 1 is provided with an air inlet 3 on the side facing the main flow. The diameter of the air inlet 3 is 0.6mm-5mm, and 1.5mm is selected in this embodiment. The number of the air inlet 3 is 3-8, and 3 are selected in this embodiment. They are arranged in a straight line along the circumferential direction. The distance between the center line of the air inlet 3 and the top of the probe head 1 is 1mm-5mm, and 4.5mm is selected in this embodiment. Figure 7 The center lines of the holes arranged along the circumferential direction are perpendicular to the cylindrical axis and intersect at the center of the circumferential cylindrical surface. The angle between adjacent circumferential holes is 15°-60°, and 30° is selected in this embodiment.

[0058] See also Figure 6 and Fig. 9 The cylinder of the probe head 1 is provided with an air outlet 4 on the side facing away from the mainstream. The diameter of the air outlet 4 is 0.3mm-3mm, and 0.9mm is selected in this embodiment. The number of the air outlets 4 is 1-3, and 2 are selected in this embodiment. They are in a straight line along the circumferential direction. The center lines of the air outlets 4 are parallel and perpendicular to the axis of the cylinder. The distance between the center lines of the air outlets 4 and the top of the probe head 1 is 6mm-18mm, and 11mm is selected in this embodiment.

[0059] The probe support rod 2 is a cylinder, and the diameter D of the cylinder is 4-12 mm, and 8 mm is selected in this embodiment.

[0060] See also Figure 4 The material of the sensor sheet 6 is copper or silver, the diameter is the same as the circular channel 5, the thickness is 0.02mm-0.2, and the embodiment uses 0.1mm. The distance between the sensor sheet 6 and the top of the probe head 1 is 3.5-12mm, and the embodiment uses 7.5mm. Figure 8 A circle of evenly distributed sensor through holes 7 is opened on the outside of the sensor sheet 6. The diameter of the sensor through holes 7 is 0.2mm-3mm, and 0.8mm is selected in this embodiment. The number is 8 to 12, and 8 is selected in this embodiment.

[0061] The temperature-sensitive phosphorescent material layer 8 is sprayed on the entire lower surface of the sensor sheet 6 after being mixed with a high-temperature adhesive. The temperature-sensitive phosphorescent material layer 8 can be selected from MFG, Y2O3:Eu, YSZ:Eu, YVO4:Dy or YAG:Dy. In this embodiment, Y2O3:Eu is selected. The spraying thickness is 0.001mm- to 0.01mm, and 0.005mm is selected in this embodiment.

[0062] The lens 9 is a panoramic fisheye lens with a viewing angle of 180 degrees, which is used to measure a wide range of signals inside the probe. The diameter is 1.3 mm-9 mm, and 5.5 mm is selected in this embodiment.

[0063] The signal transmitting unit 02 includes a light source and an optical fiber connected thereto, which is used to excite the temperature-sensitive phosphorescent material layer. The excitation light of the light source is collimated by a collimating lens and then irradiated onto the temperature-sensitive phosphorescent material. The light source is an ultraviolet LED, a blue light LED or other suitable light source with a wavelength range of 260 to 410 nm. In this embodiment, the light source is an ultraviolet LED with a wavelength of 355 nm, a light source power of 10 W, a pulse width of 20 ms, and a pulse period of 1000 ms.

[0064] The signal receiving unit 03 includes an optical fiber and a photodetector connected to the fisheye lens, which are used to detect the temperature-related phosphorescence signal emitted by the temperature-sensitive phosphorescent material. The light source and the photodetector are connected to the fisheye lens through the optical fiber, and the photodetector passes through a filter to filter out background light and non-phosphorescence signals. The photodetector can be a photodiode, a photomultiplier tube or other suitable photodetector. In this embodiment, a photomultiplier tube is selected.

[0065] The data processing unit 04 is used to process the signal output by the light detector and calculate the phosphorescence decay time to determine the temperature. The measurement area is the temperature distribution on the entire sensor chip. During the measurement process, the highest temperature value on the entire sensor chip is selected as the output result.

[0066] See also Fig.10 This is a graph showing the total temperature measured by the probe changing with the deflection angle of the incoming flow.

[0067] The process of measuring using the total temperature phosphorescence measurement system, which is insensitive to the incoming flow angle, includes:

[0068] (1) Place the total temperature phosphorescence measurement probe that is insensitive to the incoming flow angle in the measured flow field so that the air inlet 3 faces the incoming flow direction;

[0069] (2) The light emitted by the signal emitting unit 02 excites the temperature-sensitive phosphorescent material layer 8 through the fisheye lens 9;

[0070] (3) The high-speed airflow completely converts kinetic energy into thermal energy at the spraying temperature-sensitive phosphorescent material layer 8. The temperature-sensitive phosphorescent material layer 8 is excited by the input light, generates excitation light carrying temperature information and outputs it through the lens 9, and then transmits it to the data processing unit 04 through the signal receiving unit 03;

[0071] (4) The data processing unit 04 processes the optical signal carrying the temperature information to obtain the total temperature information of the flow field.

[0072] In summary, this embodiment utilizes the temperature-sensitive characteristics of phosphorescent materials and infers the temperature by detecting the phosphorescence decay time, which has the characteristics of high sensitivity and high precision. By adopting a fisheye lens, which has the characteristics of extremely wide viewing angle, it can achieve a field of view coverage of up to 180 degrees or even larger under a small optical fiber connection. This embodiment significantly reduces the influence of the incoming flow angle on the total temperature phosphorescence measurement by designing the total temperature probe air intake structure, combining the fisheye lens and phosphorescence temperature measurement technology.

[0073] The method and system have the following beneficial effects:

[0074] By opening several air inlet holes on the circumference of the total temperature probe surface, airflow can flow into the probe at different inflow angles. A temperature sensing area is placed downstream of the air inlet hole to capture all the temperature information of all airflows. After the airflow enters the total temperature probe, it impacts the temperature sensing area, and there must be a maximum temperature area in the temperature sensing area inside the probe. The fisheye lens records all temperature information of the temperature sensing area, so even if the highest temperature area changes with the inflow angle, it can be effectively captured. The total temperature is obtained by extracting the maximum temperature, so that the total temperature of the airflow can be obtained regardless of the inflow angle.

[0075] Through fisheye measurement, all temperatures inside the probe can be measured, and the maximum temperature can be recorded in a way that is not affected by the incoming flow angle. Since phosphorescent materials are used as the carrier for temperature measurement, it can be used for temperature measurement between -100-1500°C, with a wide temperature measurement range and high spatial resolution. At the same time, the use of a temperature measurement method based on phosphorescence lifetime avoids the influence of the measurement environment and the gray body radiation emission coefficient on the surface of the measurement object, as well as the influence of the measurement viewing angle. This method / system can be used to measure the total temperature of high-temperature fluids in aircraft engines or gas turbine components, providing a solution for high-precision evaluation of flow conditions.

[0076] Example 2

[0077] This embodiment provides an electronic device, including: one or more processors and a memory, wherein the memory stores one or more programs, and the one or more programs include instructions for executing the total temperature phosphorescence measurement method that is insensitive to the incoming flow angle as described in Example 1.

[0078] Example 3

[0079] This embodiment provides a computer-readable storage medium, including one or more programs for execution by one or more processors of an electronic device, wherein the one or more programs include instructions for executing the total temperature phosphorescence measurement method that is insensitive to incoming flow angle as described in Example 1.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A total temperature phosphorescence measurement method that is insensitive to the incoming flow angle, characterized in that: The steps include: Step S1, generating an excitation light signal and irradiating a sensor sheet with a temperature-sensitive phosphorescent material layer disposed on a fluid passage to be measured; Step S2, obtaining image data after the temperature-sensitive phosphorescent material layer is excited; Step S3, based on the image data, using a preset relationship between phosphorescence lifetime and temperature, obtaining temperature distribution information of the sensor sheet; Step S4, selecting the highest temperature from the temperature distribution information as the measured total temperature.

2. A total temperature phosphorescence measurement method insensitive to incoming flow angle according to claim 1, characterized in that: The process of obtaining the relationship between the phosphorescence lifetime and the temperature includes: The temperature is measured, the phosphorescence signal is collected and recorded, and the lifetime is calculated. The collected temperature is matched to the phosphorescence lifetime one by one to obtain a calibration curve of phosphorescence lifetime and temperature.

3. The total temperature phosphorescence measurement method insensitive to incoming flow angle according to claim 1, characterized in that: The excitation light signal is an ultraviolet laser with a wavelength of 260-410nm and a power of 0.1-15W.

4. A total temperature phosphorescence measurement system that is insensitive to the incoming flow angle, characterized in that: Used to implement the total temperature phosphorescence measurement method that is insensitive to the incoming flow angle as claimed in any one of claims 1 to 3, the total temperature phosphorescence measurement system comprises: A probe head (1) is provided with a channel (5) in the axial direction, and an air inlet (3) and an air outlet (4) are provided on the probe head (1); A sensor sheet (6) is located in the channel (5) and connected to the probe head (1); a sensor sheet through hole (7) is provided on the sensor sheet (6); a temperature-sensitive phosphorescent material layer (8) is provided on one side of the sensor sheet (6); and the air inlet (3), the sensor sheet (6) and the air outlet (4) form a fluid passage; A lens (9) is located in the channel (5) and faces the temperature-sensitive phosphorescent material layer (8) of the sensor sheet (6); A signal emitting unit (02), used for generating an excitation light signal and exciting the temperature-sensitive phosphorescent material layer (8); A signal receiving unit (03) is used to receive image data captured by the lens (9) after the temperature-sensitive phosphorescent material layer (8) is excited; The data processing unit (04) is used to obtain the temperature distribution information of the sensor sheet (6) based on the image data and using the preset relationship between the phosphorescence lifetime and the temperature, and select the highest temperature as the total temperature to be measured.

5. A total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The invention comprises a plurality of the air inlet holes (3), and the plurality of air inlet holes (3) are arranged at intervals along the circumference of the probe head, the diameter of the air inlet holes (3) is 0.6 mm-5 mm, the distance between the center line of the air inlet hole (3) and the top of the probe head (1) is 1 mm-5 mm, the center lines of the plurality of air inlet holes (3) are perpendicular to the axis of the channel (5) and intersect at the center of the circumferential cylindrical surface, and the angle between the axes of adjacent air inlet holes (3) is 15°-60°.

6. A total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The diameter of the channel (5) is 1.5 mm-10 mm.

7. A total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The invention comprises a plurality of the air outlet holes (4), and the plurality of air outlet holes (4) are arranged circumferentially on the opposite side of the air inlet hole (3), the diameter of the air outlet holes (4) is 0.3 mm-3 mm, the center lines of the air outlet holes (4) are parallel and respectively perpendicular to the axis of the cylinder, and the distance between the center lines of the air outlet holes (4) and the top of the probe head (1) is 6 mm-18 mm.

8. The total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The temperature-sensitive phosphorescent material layer (8) is MFG, Y2O3:Eu, YSZ:Eu, YVO4:Dy or YAG:Dy, and has a thickness of 0.001 mm to 0.01 mm.

9. The total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The signal transmitting unit (02) comprises a light source, an optical fiber and a collimating lens.

10. The total temperature phosphorescence measurement system insensitive to incoming flow angle according to claim 4, characterized in that: The signal receiving unit (03) comprises a filter.

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