A surface temperature measuring and evaluating system and method under the combined influence of multiple environmental factors

Abstract

The present application provides a kind of surface thermometer measuring and evaluating system and method under the influence of multiple environmental factors, including constant temperature and humidity standard box, constant temperature platform, temperature and humidity measurement module, wind speed measurement module, radiation heat measurement module and control module, the surface thermometer to be evaluated is multiple, temperature sensing end is placed on the isothermal plate, by controlling multiple environmental factor variables, the measurement result of the surface thermometer to be evaluated under multiple environmental factors is obtained.The present application realizes the composite control of temperature, humidity, wind speed, illumination and other factors, realizes the experimental analysis and research on the measurement result of surface thermometer under the influence of multiple environments, and evaluates the measurement performance of surface thermometer under the influence of multiple environmental factors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of measuring performance evaluation of surface thermometers, in particular to a surface thermometer measuring and evaluating system and method under the combined influence of multiple environmental factors, which is suitable for calibrating and evaluating the comprehensive performance of surface thermometers. BACKGROUND

[0002] Surface temperature measurement is an extremely important branch of temperature measurement technology, and is widely used in industrial production, inspection and detection, and scientific research fields. With the continuous progress of industrial technology and the increasing demand for product quality, the precision and stability of surface temperature measurement become particularly critical. Many users rely on sending surface thermometers to inspection and detection institutions for calibration to ensure that the equipment has reliable measurement characteristics under ideal conditions in order to obtain measurement accuracy and repeatability. However, in actual use environment, the temperature values measured by surface thermometers often differ significantly from the results obtained under laboratory calibration conditions.

[0003] The main reason for the difference is analyzed. Laboratory calibration is generally carried out in an environment with relatively stable and controllable temperature and humidity. However, in the actual working scene of surface thermometers, the acquisition of the measured surface temperature is influenced by multiple factors such as environmental temperature, humidity, thermal radiation, surface material characteristics, and light intensity. These environmental factors not only act independently, but also interact with each other, further increasing the measurement deviation. Therefore, the calibration results obtained under laboratory environmental conditions cannot fully reflect the complexity of on-site measurement.

[0004] According to the calibration environmental conditions in JJF 2137-2024 "Surface Platinum Resistance Thermometer Calibration Specification", the temperature range is (15~25)℃, the relative humidity is not greater than 80%, there should be no air flow in the laboratory that affects the measurement results during calibration, and the environmental conditions should also meet the other requirements for the normal use of the standard and other supporting equipment. However, when measuring surface temperature in a factory workshop, next to a heat source, an air conditioner outlet, outdoors, and a complex site, environmental temperature fluctuation, humidity change, light, and various unexpected wind direction and speed changes will all cause changes in the heat exchange process of the measured surface. When the local wind speed is high, the surface of the measured target will rapidly cool down in convective heat transfer, and the surface thermometer itself may also be affected by external air flow, resulting in measurement data deviating from the actual value.

[0005] In order to enable surface thermometers to still maintain high accuracy and stability in actual use environment, it is necessary to deeply study the differences between laboratory calibration and real use environment, and to eliminate or weaken the influence of multiple environmental factors through reasonable compensation and correction schemes, so as to ensure that the measurement results are truly close to the actual value, and to provide more reliable temperature data support for industrial production processes, equipment monitoring and safety protection, etc. SUMMARY

[0006] The purpose of the present application is to solve the problem of measurement deviation caused by various environmental factors in the actual use of surface thermometers, and to provide a surface thermometer measurement and evaluation system and method under the combined influence of multiple environmental factors, to realize the composite control of temperature, humidity, wind speed, illumination and other factors, to realize the experimental analysis and research on the measurement results of surface thermometers under the influence of multiple environmental factors, and to evaluate the measurement performance of surface thermometers under the influence of multiple environmental factors.

[0007] The technical scheme of the present application is:

[0008] The present application provides a surface thermometer measurement and evaluation system under the combined influence of multiple environmental factors, which comprises:

[0009] A constant temperature and humidity standard box is provided with a lower support plate, a constant temperature platform and a protective cover are placed on the lower support plate, the protective cover is sleeved outside the constant temperature platform, and the top of the constant temperature and humidity standard box is connected and fixed with a controllable moving plate, the upper surface of the controllable moving plate is connected and fixed with an upper fixed plate through an electric push rod, the constant temperature platform comprises a uniform temperature plate and a water circulation loop plate, the water circulation loop plate is located at the bottom of the uniform temperature plate and connected with an external circulating constant temperature tank, a plurality of deep holes for installing platinum resistance thermometers are arranged in the uniform temperature plate to obtain temperature and adjust the surface constant temperature through the circulating constant temperature tank;

[0010] A temperature and humidity measurement module is used to obtain the environmental temperature and humidity parameters in the box;

[0011] A wind speed measurement module comprises a first controllable power air blower, a second controllable power air blower and corresponding first and second wind speed sensors, and the wind speed distribution in the protective cover is controlled by adjusting the power combination of the first and second controllable power air blowers;

[0012] A radiation heat measurement module comprises a heat radiation light source fixed on the upper fixed plate and a radiation heat flow measurement sensor placed on the uniform temperature plate, and the radiation influence is changed by adjusting the power of the heat radiation light source;

[0013] A control module provides temperature and humidity environment through the constant temperature and humidity standard box, determines the temperature of the surface to be measured through the constant temperature platform, determines the environmental temperature and humidity parameters in the box through the temperature and humidity measurement module, determines the wind speed and radiation influence through the wind speed measurement module and the radiation heat measurement module respectively, and obtains the measurement results of the evaluated surface thermometer under the influence of multiple environmental factors.

[0014] Further, the control module comprises a dew point instrument, an electric push rod module control module, a thermal radiation light source control module, a radiation heat flow measurement display module, a wind speed measurement display module, an evaluated surface thermometer display instrument, a fan control module, and a PC. The evaluated surface thermometer is multiple, and the temperature sensing end is placed on the uniform temperature plate. The PC drives the electric push rod to move through the electric push rod module control module, adjusts the height of the protective cover, provides temperature and humidity environment by controlling the constant temperature and humidity standard box, collects real-time temperature and humidity environment parameters in the constant temperature and humidity standard box by using the dew point instrument, starts and stops the thermal radiation light source by controlling the thermal radiation light source control module, obtains the radiation parameters collected by the radiation heat flow measurement sensor by using the radiation heat flow measurement display module, adjusts the power combination and start-stop of the first controllable power blower and the second controllable power blower by controlling the fan control module, obtains the wind speed parameters collected by the first wind speed sensor and the second wind speed sensor by using the wind speed measurement display module, and obtains the measurement results of the evaluated surface thermometer under multiple environmental factors.

[0015] Further, the temperature and humidity measurement module comprises a dew point sensor and a thermometer, and the constant temperature and humidity standard box is provided with a horizontal rod above the constant temperature and humidity standard box for fixing the dew point sensor and the thermometer.

[0016] In the wind speed measurement module, the first wind speed sensor and the second wind speed sensor are respectively located on the inner side of the corresponding first air inlet and second air inlet. The first air inlet and the second air inlet are respectively arranged on the front wall and one of the side walls of the protective cover. The air inlets are respectively connected with the corresponding first controllable power blower and second controllable power blower through pipelines.

[0017] Further, the controllable temperature range of the constant temperature and humidity standard box is 0-60℃, and the humidity range is 30-95%RH. The distance between the horizontal rod above the constant temperature and humidity standard box and the top surface is 100mm.

[0018] The constant temperature and humidity standard box is provided with one left side wall reserved hole and five right side wall reserved holes, including a right side wall first reserved hole, a right side wall second reserved hole, a right side wall third reserved hole, a right side wall fourth reserved hole, and a right side wall fifth reserved hole. The diameters of the reserved holes are respectively matched with the corresponding inlet and outlet pipelines.

[0019] Further, the controllable temperature range of the circulating constant temperature tank is 0-100℃, and the temperature control accuracy is higher than ±0.2℃. The uniform temperature plate adopts a red copper uniform temperature plate with a thickness of 8mm, and the temperature uniformity is higher than 0.5℃ in a stable state. The circulating constant temperature tank is filled with antifreeze with a temperature range of-25-108℃.

[0020] Further, the right side center position of the uniform temperature plate is provided with a first deep hole with a depth of 150mm; the second deep hole and the third deep hole with a depth of 80mm are punched at a distance of 80mm from the upper boundary on the left side and a distance of 80mm from the lower boundary on the right side; the first platinum resistance thermometer is inserted into the first deep hole, and the outer protective shell has a length of 200mm; the second platinum resistance thermometer and the third platinum resistance thermometer are inserted into the second deep hole and the third deep hole respectively, and the outer protective shell has a length of 130mm; the platinum resistance thermometers are used to obtain the temperature data of the uniform temperature plate and transmit the temperature data to the PC through the multi-channel temperature measuring instrument.

[0021] Further, the water circulation loop plate is provided with equidistant water circulation loop grooves, and the inlet end and the outlet end of the water circulation loop plate are connected with the circulation loop outlet end and the circulation loop inlet end of the circulating constant temperature tank respectively; the bottom and the periphery of the water circulation loop plate are provided with a heat preservation layer; the heat preservation layer is wrapped with aerogel thermal insulation material, and the outside is assembled and fixed with a stainless steel plate.

[0022] Further, the electric push rod is connected to the electric push rod module control module through the electric push rod module junction box and the cable, and the electric push rod module junction box is fixed on the upper fixed plate.

[0023] Further, a circular hole is formed in the center of the controllable moving plate for installing a lamp holder of a heat radiation light source, and the lamp holder is connected to the heat radiation light source control module through a cable; the heat radiation light source uses a xenon lamp with a power of 50W, 100W, 200W or 300W.

[0024] A method for a surface thermometer evaluation system under the combined influence of multiple environmental factors, comprising:

[0025] Step 1: Connect the cable according to the surface thermometer evaluation system under the combined influence of multiple environmental factors, turn on the power switch and check;

[0026] Step 2: Use the PC to control the electric push rod module control module to lift the protective cover to the highest position;

[0027] Step 3: Select the power of the heat radiation light source to be used;

[0028] Step 4: Place the temperature sensing end of the surface thermometer to be evaluated on the uniform temperature plate, and lead out to the outside of the constant temperature and humidity standard box through the wire; control the electric push rod module control module to lower the protective cover to the upper surface of the lower support plate, and close the door of the constant temperature and humidity standard box;

[0029] Step 5: Set the temperature and humidity of the constant temperature and humidity standard box and start running, set the temperature of the circulating constant temperature tank and start running;

[0030] Step 6: After the dew point instrument shows that the temperature and humidity reach the temperature and humidity set by the constant temperature and humidity standard box, stabilize for at least 30 min; after the multi-channel temperature measuring instrument shows that the measured temperature reaches the set temperature of the circulating constant temperature tank, stabilize for at least 20 min; record the temperature value of the evaluated surface thermometer displayed by the instrument display of the evaluated surface thermometer;

[0031] Step 7: Configure the power combination of the first controllable power blower and the second controllable power blower, set and start the preset power through the fan control module, and start the heat radiation light source through the heat radiation light source control module; read the readings of the first wind speed sensor and the second wind speed sensor displayed by the wind speed measuring display module, and read the reading of the radiation heat flow measuring sensor displayed by the radiation heat flow measuring display module; stabilize for more than 10 min, and record the temperature value displayed by the instrument display of the evaluated surface thermometer after stabilization; repeat the above operation until the preset power of the first controllable power blower and the second controllable power blower is tested; turn off the heat radiation light source; turn off the first controllable power blower and the second controllable power blower;

[0032] Step 8: Set the circulating constant temperature tank to other evaluation temperatures and start running; repeat steps 6-7 until the evaluation temperature points of the circulating constant temperature tank are tested;

[0033] Step 9: Set the constant temperature and humidity standard box to other evaluation temperatures and humidities and start running; repeat steps 6-8 until the evaluation temperature and humidity points of the constant temperature and humidity standard box are tested;

[0034] Step 10: Stop the constant temperature and humidity standard box and the circulating constant temperature tank from running, control the electric push rod module control module to lift the protective cover to the highest position; take out the key power supply of the evaluated surface thermometer;

[0035] Step 11: Perform data aggregation, analyze the measurement deviation of the evaluated surface thermometer under the influence of multiple environmental factors, and obtain the performance evaluation result.

[0036] The beneficial effects of the present application are:

[0037] The surface thermometer evaluation system under the influence of multiple environmental factors of the present application is a constant temperature platform that combines environmental temperature, humidity, wind speed and light and other multiple environmental influence factors, which is used for evaluating the measurement results of the surface thermometer under the influence of multiple factors. The measurement results of the surface thermometer under the influence of multiple environments can be analyzed and researched, and the measurement performance of the surface thermometer under the influence of multiple environmental factors can be evaluated.

[0038] The surface thermometer measurement and evaluation system under the combined influence of multiple environmental factors can significantly improve the measurement capability of the tested surface thermometer under the influence of complex environmental factors, and guarantee the reliability of the surface thermometer measurement under multiple environmental factors.

[0039] The application discloses a surface thermometer performance evaluation method, aiming at the measurement accuracy problem of a surface thermometer under a complex environment, simulates and controls temperature, humidity, radiant heat flow and airflow and other environmental factors through a constant temperature platform, a constant temperature and humidity standard box, a thermal radiation light source and a controllable power blower and other equipment. A stable temperature reference is provided through a red copper uniform temperature plate, and centralized data collection and real-time recording are realized through a multi-path serial concentrator. By systematically adjusting various environmental parameters, measurement deviations of the surface thermometer under different conditions are comprehensively evaluated, so that comprehensive performance evaluation results of the surface thermometer are obtained. The method can effectively analyze the combined influence of multiple environmental factors on the measurement accuracy of the surface thermometer, and provides a reliable basis for improving the design of the surface thermometer and optimizing the measurement method.

[0040] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures, in which exemplary embodiments of the present application are shown.

[0042] Figure 1 FIG. 1 is a structural schematic diagram of a surface thermometer measurement and evaluation system under the combined influence of multiple environmental factors according to the present application.

[0043] Figure 2 FIG. 2 is a structural schematic diagram of a constant temperature platform according to the present application.

[0044] Figure 3 FIG. 3 is a structural schematic diagram of a water circulation loop board according to the present application.

[0045] Figure 4 FIG. 4 is a structural schematic diagram of a protective cover according to the present application.

[0046] In the figure: 1, constant temperature and humidity standard box; 2, constant temperature platform; 3, lower support flat plate; 4, protective cover; 5, left side box wall reserved hole; 6, right side box wall first reserved hole; 7, right side box wall second reserved hole; 8, right side box wall third reserved hole; 9, right side box wall fourth reserved hole; 10, right side box wall fifth reserved hole; 11, serial port wiring panel; 12, horizontal rod; 13, dew point sensor; 14, thermometer; 15, dew point meter; 16, upper fixed flat plate; 17, thermal radiation light source; 18, electric push rod; 19, controllable moving flat plate; 20, electric push rod module wiring box; 21, electric push rod module control module; 22, lamp holder; 23, thermal radiation light source control module; 24, first platinum resistance thermometer; 25, second platinum resistance thermometer; 26, third platinum resistance thermometer; 27, multi-channel temperature meter; 28, radiation heat flow measurement sensor; 29, radiation heat flow measurement display module; 30, first wind speed sensor; 31, second wind speed sensor; 32, wind speed measurement display module; 33, evaluated surface thermometer; 34, evaluated surface thermometer display instrument; 35, constant temperature water tank loop inlet end connecting pipeline; 36, constant temperature water tank loop outlet end connecting pipeline; 37, circulating constant temperature tank; 38, first controllable power blower; 39, first exhaust pipe; 40, second controllable power blower; 41, second exhaust pipe; 42, fan control module; 43, PC; 44, multi-channel serial port concentrator;

[0047] 201, uniform temperature plate; 202, water circulation loop plate; 203, heat preservation layer; 204, first deep hole; 205, second deep hole; 206, third deep hole; 207, water circulation loop inlet end; 208, water circulation loop outlet end; 209, water circulation loop groove; 210, groove wall;

[0048] 401, first air inlet; 402, second air inlet; 403, protective cover right side groove; 404, first air outlet; 405, second air outlet; 406, array strip-shaped air-permeable hole; 407, round hole; 408, cylindrical slider. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present application will be described in more detail by making reference to the accompanying drawings. Even though the preferred embodiments of the present application are shown in the drawings, it is to be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Example 1

[0050] Figure 1 is a structural schematic diagram of the surface thermometer evaluation system under the combined influence of multiple environmental factors of the present application.

[0051] As Figure 1As shown, the present application provides a surface thermometer evaluation system under the combined influence of multiple environmental factors, which comprises: a constant temperature and humidity standard box 1, a constant temperature platform 2, a lower support flat plate 3, a protective cover 4, a left side box wall reserved hole 5, a right side box wall first reserved hole 6, a right side box wall second reserved hole 7, a right side box wall third reserved hole 8, a right side box wall fourth reserved hole 9, a right side box wall fifth reserved hole 10, a serial port wiring panel 11, a horizontal rod 12, a dew point sensor 13, a thermometer 14, a dew point meter 15, an upper fixed flat plate 16, a thermal radiation light source 17, an electric push rod 18, a controllable moving flat plate 19, an electric push rod module wiring box 20, an electric push rod module control module 21, a lamp holder 22, a thermal radiation light source control module 23, a first platinum resistance thermometer 24, a second platinum resistance thermometer 25, a third platinum resistance thermometer 26, a multi-channel temperature measuring instrument 27, a radiation heat flow measuring sensor 28, a radiation heat flow measuring display module 29, a first wind speed sensor 30, a second wind speed sensor 31, a wind speed measuring display module 32, an evaluated surface thermometer 33, an evaluated surface thermometer display instrument 34, a constant temperature water tank loop inlet end connecting pipeline 35, a constant temperature water tank loop outlet end connecting pipeline 36, a circulating constant temperature tank 37, a first controllable power blower 38, a first exhaust pipe 39, a second controllable power blower 40, a second exhaust pipe 41, a fan control module 42, a PC 43, a multi-channel serial port concentrator 44 and the like.

[0052] The constant temperature and humidity standard box 1 provides a controllable temperature and humidity environment, the controllable temperature environment is 0~60℃, the humidity environment is 30~95%RH, and the internal space size is 800mm×800mm×1100mm; the left side box wall reserved hole 5 has a diameter of 120mm, the right side box wall first reserved hole 6 and the right side box wall second reserved hole 7 have a diameter of 120mm; the right side box wall third reserved hole 8, the right side box wall fourth reserved hole 9 and the right side box wall fifth reserved hole 10 have a diameter of 60mm; the horizontal rod 12 is fixed on the upper side in the constant temperature and humidity standard box 1, and the distance from the top surface is 100mm, which is used for fixing the dew point sensor 13 and the thermometer 14, and the dew point sensor and the thermometer are respectively precise dew point sensors and precise thermometers; the constant temperature and humidity standard box 1 is connected with the PC 43 through a communication cable, and the temperature and humidity are set through instructions.

[0053] Further, the constant temperature platform 2 is placed on the lower support flat plate 3, the temperature control mode is water circulation temperature control, the built-in water circulation loop board 202 is connected with the circulating constant temperature tank 37 through a connecting pipeline, and the temperature is controlled through the circulating constant temperature tank 37, and the controllable temperature range is 0~100℃; the constant temperature platform 2 has a table size of 300mm×300mm, the upper surface is a uniform temperature plate 201 with a thickness of 8mm, which is a red copper uniform temperature plate, and the temperature uniformity is better than 0.5℃ in a stable state.

[0054] Further, as shown in the figure, Figure 2The diagram shows the structure of the constant temperature platform 2 described in this invention. The structure includes: a temperature distribution plate 201, a water circulation loop plate 202, an insulation layer 203, a first deep hole 204, a second deep hole 205, a third deep hole 206, a water circulation loop inlet end 207, and a water circulation loop outlet end 208. A first deep hole 204 with a diameter of 4.5 mm and a depth of 150 mm is drilled at the center of the right side of the aforementioned temperature distribution plate 201; a third deep hole 205 with a diameter of 4.5 mm and a depth of 80 mm is drilled at a distance of 80 mm from the upper boundary on the left side. The second deep hole 205; a third deep hole 206 with a diameter of 4.5 mm and a depth of 80 mm is drilled 80 mm from the lower boundary on the right side; the aforementioned first, second and third deep holes are respectively used to insert Pt100 platinum resistance thermometers with an outer protective shell diameter of 4 mm, wherein the outer protective shell length of the first platinum resistance thermometer 24 inserted into the first deep hole 204 is 200 mm, and the outer protective shell length of the second platinum resistance thermometer 25 and the third platinum resistance thermometer 26 inserted into the second deep hole 205 and the third deep hole 206 is 130 mm.

[0055] Furthermore, the overall thickness of the aforementioned water circulation circuit board 202 is 20mm; as Figure 3 As shown in the schematic diagram of the water circulation loop of the constant temperature platform of the present invention, the built-in equally spaced water circulation loop grooves 209 have a width of 10mm and a depth of 12mm, and the groove wall 210 of the water circulation loop has a thickness of 5mm; the water circulation loop inlet end 207 and the water circulation loop outlet end 208 are respectively connected to the loop outlet end and inlet end of the circulating constant temperature bath 37; the bottom and the sides of the water circulation loop plate 202 are covered with a heat insulation layer 203, which is wrapped with a 30mm thick aerogel heat insulation material, and the outside is assembled and fixed with a 1mm thick stainless steel plate.

[0056] Furthermore, the circulating thermostatic bath 37 has an internal volume of 25L, uses antifreeze with an applicable temperature range of -25~108℃, has an effective temperature control range of 0~100℃, a temperature control accuracy better than ±0.2℃, and a circulation pump flow rate of 10L / min; the aforementioned water circulation loop inlet 207 is connected to the thermostatic water bath loop outlet end through the thermostatic water bath loop outlet end connecting pipe 36, and the aforementioned water circulation loop outlet end 208 is connected to the thermostatic water bath loop inlet end through the thermostatic water bath loop inlet end connecting pipe 35. The thermostatic water bath loop inlet end connecting pipe 35 and the thermostatic water bath loop outlet end connecting pipe 36 are PVC hoses with an inner diameter of 8mm, and the PVC hoses are covered with a rubber and plastic insulation pipe with a thickness of 10mm.

[0057] Further, the lower support plate 3 is an aluminum alloy plate with a size of 600mm*600mm and a thickness of 8mm, and the lower part is provided with four support columns with a diameter of 30mm and a height of 10mm; four stainless steel cylinders with a diameter of 10mm and a height of 800mm are fixed to the upper part of the lower support plate 3 at a distance of 50mm from the edges of the plate, and the upper parts of the cylinders are fixed to the upper fixed plate 16; the upper fixed plate 16 is made of aluminum alloy and has a size of 600mm*600mm and a thickness of 16mm.

[0058] Further, as shown in the structural diagram of the protective cover 4 of the present application, the protective cover 4 has a thickness of 1mm, a length and a width of 450mm*450mm, and a height of 400mm, and the upper part of the protective cover 4 is provided with an array of strip-shaped air-permeable holes 406 with a length of 20mm and a width of 5mm; the top of the protective cover 4 is fixedly connected with the controllable moving plate 19, and the protective cover 4 can be lifted by controlling the moving module. Figure 4

[0059] Further, the first air inlet 401 with a diameter of 100mm is located at a position 80mm away from the lower bottom edge in the center of the front part of the protective cover 4; the second air inlet 402 with a diameter of 100mm is located at a position 80mm away from the lower bottom edge in the center of the right side of the protective cover 4; the height of the groove 403 on the right side of the protective cover is 50mm, and the width is 300mm; the first air outlet 404 is located opposite to the first air inlet 401, and the second air outlet 405 is located opposite to the second air inlet 402, and the first air outlet 404 and the second air outlet 405 are both hollowed-out surfaces with a diameter of 150mm.

[0060] Further, the controllable moving plate 19 is an aluminum alloy plate with a size of 500mm*500mm and a thickness of 8mm, and a circular hole 407 with a diameter of 300mm is formed in the center of the controllable moving plate 19; the controllable moving plate 19 is fixedly connected with the upper fixed plate 16 through the left and right two electric push rods 18; the effective lifting stroke of the electric push rod 18 is (0~150)mm, and the electric push rod module junction box 20 is fixed to the upper fixed plate 16; the electric push rod module junction box 20 is connected to the electric push rod module control module 21 through a cable; two edge fixed cylindrical sliders 408 are fixed to the front and rear of the controllable moving plate 19, the cylindrical sliders 408 are sleeved on the stainless steel cylinders with an inner diameter of 11mm and built-in rolling sliding beads.

[0061] Further, the heat radiation light source 17 uses a xenon lamp, and the xenon lamp with a power of 50W, 100W, 200W or 300W can be selected, and the xenon lamp can be manually replaced during use; the lamp holder 22 of the heat radiation light source is fixed to the upper fixed plate 16 and is provided with a lampshade with an opening diameter of 250mm, and the lamp holder 22 can be fixed through the circular hole 407; the lamp holder 22 is connected to the heat radiation light source control module 23 through a cable.

[0062] ​Further, the controllable power blower is divided into a first controllable power blower 38 and a second controllable power blower 40, and the controllable output air speed range is 0-5 m / s; the first controllable power blower 38 is connected to the first air inlet 401 through the first exhaust pipe 39 of the thickened aluminum foil with a diameter of 100 mm; the second controllable power blower 40 is connected to the second air inlet 402 through the second exhaust pipe 41 of the thickened aluminum foil with a diameter of 100 mm; the first controllable power blower 38 and the second controllable power blower 40 are connected to the fan control module 42 through a cable, and the output air volume of the first controllable power blower 38 and the second controllable power blower 40 can be set.

[0063] Further, the air speed measuring module is composed of a first air speed sensor 30, a second air speed sensor 31 and an air speed measuring display module 32, the measurement range of the air speed testing device is 0.1-10 m / s, the measurement end of the first air speed sensor 30 is located inside the first air inlet 401, and the measurement end of the second air speed sensor 31 is located inside the second air inlet 402; the first air speed sensor 30 and the second air speed sensor 31 are connected to the air speed measuring display module 32 through a cable.

[0064] Further, the radiant heat measuring module is composed of a radiant heat flow measuring sensor 28 and a radiant heat flow measuring display module 29, the radiant heat flow measuring sensor 28 is placed on the uniform temperature plate 201, and the radiant heat flow measuring sensor 28 is connected to the radiant heat flow measuring display module 29 through a cable; the radiant heat flow measurement range of the radiant heat flow measuring sensor 28 is 0-2000 W / m 2 .

[0065] Further, the control and data acquisition module of each module is connected to the multi-channel serial concentrator 44 through a communication cable, and finally connected to the PC 43 to control and read data of each device;

[0066] Further, the temperature sensing end of the evaluated surface thermometer 33 is placed on the uniform temperature plate 201, and the evaluated surface thermometer display instrument 34 is placed outside the constant temperature and humidity standard box 1. Embodiment 2:

[0067] The method steps of using the surface thermometer evaluation system under the influence of multiple environmental factors to evaluate the evaluated surface thermometer are as follows:

[0068] Step 1: According to the connection cable of the surface thermometer evaluation system under the influence of multiple environmental factors, turn on the power switch and check;

[0069] Step 2: Use the PC 43 to control the electric push rod module control module 21 to lift the protective cover 4 to the highest position;

[0070] Step 3: Select the power of the thermal radiation light source 17 to be used;

[0071] Step 4: Place the temperature sensing end of the evaluated surface thermometer 33 on the uniform temperature plate 201, and lead out to the outside of the constant temperature and humidity standard box 1 through the wire; control the electric push rod module control module 21 to lower the protective cover 4 to the upper surface of the lower support plate 3, and close the door of the constant temperature and humidity standard box 1;

[0072] Step 5: Set the temperature and humidity of the constant temperature and humidity standard box 1 and start running, and set the temperature of the circulating constant temperature tank 37 and start running;

[0073] Step 6: After the temperature and humidity displayed by the dew point instrument 15 reach the set temperature and humidity of the constant temperature and humidity standard box 1, stabilize for at least 30 minutes; after the measured temperature displayed by the multi-channel temperature measuring instrument 27 reaches the set temperature of the circulating constant temperature tank 37, stabilize for at least 20 minutes; record the temperature value of the evaluated surface thermometer 33 displayed by the evaluated surface thermometer display instrument 34;

[0074] Step 7: Configure the power combination of the first controllable power blower 38 and the second controllable power blower 40, set and start the pre-set power through the fan control module 42, and start the thermal radiation light source 17 through the thermal radiation light source control module 23; read the readings of the first wind speed sensor 30 and the second wind speed sensor 31 displayed by the wind speed measurement display module 32, and read the readings of the radiant heat flow measurement sensor 28 displayed by the radiant heat flow measurement display module 29; stabilize for more than 10 minutes, and record the temperature value displayed by the evaluated surface thermometer display instrument 34 after stabilization; repeat the above operation until the pre-set power of the first controllable power blower 38 and the second controllable power blower 40 is tested; turn off the thermal radiation light source 17; turn off the first controllable power blower 38 and the second controllable power blower 40;

[0075] Step 8: Set the circulating constant temperature tank 37 to other evaluation temperatures and start running; repeat steps 6-7 until the evaluation temperature points of the circulating constant temperature tank 37 are tested;

[0076] Step 9: Set the constant temperature and humidity standard box 1 to other evaluation temperatures and humidities and start running; repeat steps 6-8 until the evaluation temperature and humidity points of the constant temperature and humidity standard box 1 are tested;

[0077] Step 10: Stop the constant temperature and humidity standard box 1 and the circulating constant temperature tank 37 from running, control the electric push rod module control module 21 to raise the protective cover 4 to the highest position; take out the evaluated surface thermometer 33 and key power supply;

[0078] Step 11: data collection is performed, and the measurement deviation of the evaluated surface thermometer 33 under the combined influence of multiple environmental factors is analyzed to obtain the performance evaluation result.

[0079] Embodiments of the application have been described above, with the understanding that these descriptions are exemplary only, and are not restrictive of the disclosed embodiments. Many modifications and variations of the disclosed embodiments are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the disclosed embodiments, the application can be practiced otherwise than as specifically described.

Claims

1. A surface temperature measurement and evaluation system under the combined influence of multiple environmental factors, characterized by, The system comprises: The constant temperature and humidity standard box (1) is internally provided with a lower support flat plate (3), the lower support flat plate (3) is placed with a constant temperature platform (2) and a protective cover (4), the protective cover (4) is sleeved outside the constant temperature platform (2); and the top thereof is connected and fixed with a controllable moving flat plate (19), the upper surface of the controllable moving flat plate (19) is connected and fixed with an upper fixed flat plate (16) through an electric push rod (18); the constant temperature platform (2) comprises a uniform temperature plate (201) and a water circulation loop plate (202), the water circulation loop plate (202) is located at the bottom of the uniform temperature plate (201) and is connected with an external circulating constant temperature tank (37); a plurality of deep holes for installing platinum resistance thermometers are arranged in the uniform temperature plate (201) to obtain temperature and adjust the surface constant temperature through the circulating constant temperature tank (37); The temperature and humidity measuring module is used for obtaining the temperature and humidity parameters of the box; The wind speed measuring module comprises a first controllable power air blower (38), a second controllable power air blower (40) and corresponding first and second wind speed sensors (30) and (31); the power combination of the first and second controllable power air blowers (38) and (40) is adjusted to control the wind speed distribution in the protective cover (4); The radiation heat measuring module comprises a heat radiation light source (17) fixed on the upper fixed flat plate (16) and a radiation heat flow measuring sensor (28) placed on the uniform temperature plate (201), the power of the heat radiation light source (17) is adjusted to change the radiation influence; The control module provides the temperature and humidity environment through the constant temperature and humidity standard box (1), determines the temperature of the measured surface through the constant temperature platform (2), determines the temperature and humidity parameters of the box through the temperature and humidity measuring module, respectively determines the wind speed and radiation influence through the wind speed measuring module and the radiation heat measuring module, and obtains the measurement results of the evaluated surface temperature meter under multiple environmental factors.

2. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 1, characterized in that The control module includes a dew point instrument (15), an electric push rod module control module (21), a thermal radiation light source control module (23), a radiation heat flow measurement display module (29), a wind speed measurement display module (32), an evaluated surface thermometer display instrument (34), a fan control module (42), and a PC (43). The evaluated surface thermometers (33) are multiple, and the temperature sensing end is placed on the vapor chamber (201). The PC (43) drives the electric push rod (18) to move through the electric push rod module control module (21), adjusts the height of the protective cover (4), provides the temperature and humidity environment by controlling the constant temperature and humidity standard box (1), collects the real-time temperature and humidity environment parameters in the constant temperature and humidity standard box (1) by using the dew point instrument (15), provides the constant temperature platform (2) surface temperature by controlling the circulating constant temperature tank (37), obtains the vapor chamber (201) surface temperature collected by the evaluated surface thermometer (33) by using the evaluated surface thermometer display instrument (34), starts and stops the thermal radiation light source (17) by controlling the thermal radiation light source control module (23), obtains the radiation parameters collected by the radiation heat flow measurement sensor (28) by using the radiation heat flow measurement display module (29), adjusts the power combination and start-stop of the first controllable power blower (38) and the second controllable power blower (40) by controlling the fan control module (42), obtains the wind speed parameters collected by the first wind speed sensor (30) and the second wind speed sensor (31) by using the wind speed measurement display module (32), and obtains the measurement results of the evaluated surface thermometer (33) under multiple environmental factors.

3. The surface thermometer evaluation system under the combined influence of multiple environmental factors according to claim 1, characterized in that, The temperature and humidity measurement module includes a dew point sensor (13) and a thermometer (14), and the constant temperature and humidity standard box (1) is provided with a horizontal rod (12) at the upper portion for fixing the dew point sensor (13) and the thermometer (14); In the wind speed measurement module, the first wind speed sensor (30) and the second wind speed sensor (31) are respectively located on the inner side of the corresponding first air inlet (401) and the second air inlet (402), the first air inlet (401) and the second air inlet (402) are respectively arranged on the front wall and one side wall of the protective cover (4), and the air inlets are respectively connected with the corresponding first controllable power blower (38) and the second controllable power blower (40) through pipelines.

4. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 1, characterized in that The controllable temperature range of the constant temperature and humidity standard box (1) is 0-60℃, and the humidity range is 30-95%RH; the distance between the horizontal rod (12) at the upper portion in the constant temperature and humidity standard box (1) and the top surface is 100mm; The constant temperature and humidity standard box (1) is provided with one left side wall reserved hole (5) and five right side wall reserved holes, including a right side wall first reserved hole (6), a right side wall second reserved hole (7), a right side wall third reserved hole (8), a right side wall fourth reserved hole (9), and a right side wall fifth reserved hole (10), and the diameters of the reserved holes are respectively matched with the corresponding inlet and outlet pipelines.

5. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 1, characterized in that, The controllable temperature range of the circulating constant temperature bath (37) is 0~100℃, and the temperature control accuracy is higher than ±0.2℃; the temperature distribution plate (201) is made of copper and has a thickness of 8mm, and the temperature uniformity is higher than 0.5℃ under stable conditions; the circulating constant temperature bath (37) is filled with antifreeze with a temperature range of -25~108℃.

6. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 1, characterized in that The temperature distribution plate (201) has a first deep hole (204) with a depth of 150 mm at the center of the right side; a second deep hole (205) and a third deep hole (206) with a depth of 80 mm are drilled at the left side 80 mm from the upper boundary and the right side 80 mm from the lower boundary; a first platinum resistance thermometer (24) is inserted into the first deep hole (204), and the outer protective shell is 200 mm long; a second platinum resistance thermometer (25) and a third platinum resistance thermometer (26) are inserted into the second deep hole (205) and the third deep hole (206), respectively, and the outer protective shell is 130 mm long. The platinum resistance thermometers are used to obtain the temperature data of the temperature distribution plate (201) and transmit it to the PC (43) through the multi-channel thermometer (27).

7. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 1, characterized in that The water circulation circuit plate (202) has an internally spaced water circulation circuit groove (209). The inlet and outlet ends of the water circulation circuit plate (202) are connected to the outlet and inlet ends of the circulation circuit of the circulating constant temperature bath (37), respectively. The bottom and sides of the water circulation circuit plate (202) are provided with a heat insulation layer (203). The heat insulation layer (203) is made of aerogel heat insulation material and is assembled and fixed with stainless steel plate on the outside.

8. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 2, characterized in that The electric push rod (18) is connected to the electric push rod module control module (21) via the electric push rod module junction box (20) and a cable. The electric push rod module junction box (20) is fixed on the upper fixed plate (16).

9. The surface temperature measurement and evaluation system under the influence of multiple environmental factors according to claim 2, characterized in that The controllable movable plate (19) has a circular hole (407) in the center for mounting a lamp holder (22) for a thermal radiation light source (17). The lamp holder (22) is connected to the thermal radiation light source control module (23) via a cable. The thermal radiation light source (17) uses a xenon lamp with a power of 50W, 100W, 200W or 300W.

10. A method for use in the system of claim 2, wherein include: Step 1: Connect the cables to the surface thermometer evaluation system under the combined influence of multiple environmental factors, turn on the power switch and check; Step 2: Use a PC (43) to control the electric push rod module control module (21) to raise the protective cover (4) to the highest position; Step 3: Select the power of the required thermal radiation source (17); Step 4: Place the sensing end of the surface thermometer (33) to be evaluated on the temperature distribution plate (201) and lead it out to the outside of the constant temperature and humidity standard chamber (1) through the wire; control the electric push rod module control module (21) to lower the protective cover (4) to the upper surface of the lower support plate (3) and close the door of the constant temperature and humidity standard chamber (1); Step 5: Set the temperature and humidity of the constant temperature and humidity standard chamber (1) and start its operation; set the temperature of the circulating constant temperature bath (37) and start its operation. Step 6: After the dew point instrument (15) displays the temperature and humidity reaching the temperature and humidity set by the constant temperature and humidity standard box (1), stabilize for at least 30 min; after the multi-channel temperature measuring instrument (27) displays the measured temperature reaching the set temperature of the circulating constant temperature tank (37), stabilize for at least 20 min; record the temperature value of the evaluated surface thermometer (33) displayed by the evaluated surface thermometer display instrument (34); Step 7: Configure the power combination of the first controllable power air blower (38) and the second controllable power air blower (40), set and start the preset power through the fan control module (42), and start the heat radiation light source (17) through the heat radiation light source control module (23); read the readings of the first air speed sensor (30) and the second air speed sensor (31) displayed by the air speed measuring display module (32), and read the readings of the radiation heat flow measuring sensor (28) displayed by the radiation heat flow measuring display module (29); stabilize for more than 10 min, and record the temperature value displayed by the evaluated surface thermometer display instrument (34) after stabilization; repeat the above operation until the preset power of the first controllable power air blower (38) and the second controllable power air blower (40) is tested; turn off the heat radiation light source (17); turn off the first controllable power air blower (38) and the second controllable power air blower (40); Step 8: Set the circulating constant temperature tank (37) to other evaluation temperatures and start running; repeat steps 6-7 until the evaluation temperature points of the circulating constant temperature tank (37) are tested; Step 9: Set the constant temperature and humidity standard box (1) to other evaluation temperatures and humidities and start running; repeat steps 6-8 until the evaluation temperature and humidity points of the constant temperature and humidity standard box (1) are tested; Step 10: Stop the constant temperature and humidity standard box (1) and the circulating constant temperature tank (37) from running, control the electric push rod module control module (21) to lift the protective cover (4) to the highest position; take out the evaluated surface thermometer (33) and key power supply; Step 11: Perform data aggregation, analyze the measurement deviation of the evaluated surface thermometer (33) under the influence of multiple environmental factors, and obtain the performance evaluation result.

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