CN113884220A - Airport pavement temperature testing equipment and method for airplane wake flow - Google Patents
Airport pavement temperature testing equipment and method for airplane wake flow Download PDFInfo
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
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- G—PHYSICS
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
Abstract
An airport pavement temperature test device and a test method for airplane wake flow relate to the field of airport engineering construction and airplane wake flow temperature test. The invention solves the problem that the existing measurement mode of adopting a fixed or movable thermal infrared imager fixed on both sides of the road shoulder can generate larger errors due to the problems of measuring distance, angle and the like, and the judgment of the airport pavement temperature result is influenced. The first temperature sensing element is embedded in the edge of the top cover of the lamp to obtain the temperature of the aircraft wake flow, the upper ends of the second temperature sensing element and the third temperature sensing element are respectively inserted into the reserved mounting through hole and the reserved mounting blind hole of the top cover of the lamp, the second temperature sensing element obtains the temperature of the airport pavement surface and the temperature of the top cover of the lamp under the action of the external environment containing the aircraft wake flow, and the third temperature sensing element obtains the temperature of the top cover of the lamp. The method is used for accurately acquiring the influence of the high-temperature wake flow of the aircraft engine tail nozzle on the temperature field of the airport pavement, so that the use performance of the airport pavement can be estimated in real time.
Description
Technical Field
The invention relates to the field of airport engineering construction and airplane wake flow temperature testing, in particular to airport pavement temperature testing equipment and a testing method aiming at airplane wake flow.
Background
With the development of social economy and the improvement of living standard of people, air transportation gradually becomes a popular trip choice for people by virtue of the advantages of comfortable and convenient riding environment, low air ticket price, transportation efficiency which is difficult to reach by other traffic trip modes and the like, so that the construction of civil airports in China is continuously and rapidly developed. According to statistical data published by a national data network, 240 civil airports are built in China in 2020, annual passenger throughput is accumulated for 8.57 hundred million times, and airports with annual passenger throughput more than ten million times in the existing civil airports can be as high as 39. In the face of the greatly increased traffic demand and the limited number of airport runways, the runways at each large airport are operating at a nearly full takeoff and landing frequency. As an external structure, when an airport pavement is subjected to external environment and traffic load for a long time, the use performance of the pavement is rapidly reduced due to local structural damage, and the safety operation of the airport and the safety of passengers are seriously affected. Generally, under the conditions of summer solar radiation, ambient temperature, increasingly complex airplane loading action and frequent take-off and landing caused by large transportation demand, the airport pavement is very easy to generate track deformation and fatigue damage, and particularly for the airport asphalt pavement sensitive to temperature, the bearing capacity and the service performance of the airport asphalt pavement face greatly challenge.
Particularly, when the airplane stays on the pavement or passes through the pavement slowly, the high-temperature gas ejected by the engine can locally heat the pavement, so that the temperature of the pavement is rapidly increased, the pavement material is expanded and deformed in a short time to develop rutting diseases, the taking-off and landing safety and the passenger comfort of the airplane are seriously affected, and the influence of the high-temperature wake flow of the airplane on the surface temperature of the airport pavement is necessary to be obtained. However, the current test for the temperature of the aircraft wake flow is only limited to the test of the working performance of the engine, and the influence of the aircraft engine wake flow on the temperature field distribution of the airport pavement is rarely researched. In addition, in consideration of strict safety control and non-navigation construction requirements of an airport, the fixed or movable thermal infrared imagers fixed on two sides of the road shoulder are adopted for measurement, so that large errors are generated due to problems of testing distance, angles and the like, and judgment of the temperature result of the road surface of the airport is influenced. Therefore, a testing device and a method capable of accurately testing the temperature of the aircraft engine wake flow on the surface of the airport pavement in a close range are needed.
In summary, the existing measurement mode using the fixed or movable thermal infrared imagers fixed on both sides of the road shoulder has the problem that the judgment of the airport pavement temperature result is affected due to the large errors caused by the problems of the test distance, the test angle and the like.
Disclosure of Invention
The invention aims to solve the problem that the judgment of airport pavement temperature results is affected due to large errors caused by the problems of testing distance, angle and the like in the conventional measuring mode of adopting a fixed thermal infrared imager or a movable thermal infrared imager fixed on two sides of a road shoulder, and further provides airport pavement temperature testing equipment and a testing method for airplane wake flow.
The technical scheme of the invention is as follows:
an airport pavement temperature test device aiming at aircraft wake flow comprises a lamp body, a protective sleeve 9, a first temperature sensing element, a second temperature sensing element and a third temperature sensing element, wherein the lamp body comprises a lamp top cover 2, a lamp inner cover 7, a binding post fixed end 8, a prism assembly and a bulb assembly, the lamp top cover 2 comprises an edge and a cylindrical hollow cylinder with an integrated structure, a prism holding tank which is coaxial and communicated with the cylindrical hollow cylinder is processed at the center of the end surface at the edge of the lamp top cover 2, the prism assembly is arranged in the cylindrical hollow cylinder and the prism holding tank, the bulb assembly is arranged at the bottom of the prism assembly, the binding post fixed end 8 is arranged on the inner wall of the lamp inner cover 7, the lamp inner cover 7 is buckled on the bulb assembly and is detachably connected with the bottom of the cylindrical hollow cylinder, wire outlet holes are processed at the bottoms of the lamp inner cover 7 and the protective sleeve 9, the protective sleeve 9 is sleeved on the lamp inner cover 7, the upper end of the protective sleeve 9 is detachably connected with the lamp top cover 2 through a first temperature sensing element, the first temperature sensing element is embedded in a bolt mounting hole at the edge of the lamp top cover 2 and is used for obtaining the temperature of airplane wake flow, a prism light outlet communicated with a prism accommodating cavity is processed on the upper end face of the lamp top cover 2, a reserved mounting through hole and a reserved mounting blind hole are respectively processed on the lamp top cover 2 at the side part of the prism light outlet, the upper ends of a second temperature sensing element and a third temperature sensing element are respectively inserted in the reserved mounting through hole and the reserved mounting blind hole, the lower ends of the second temperature sensing element and the third temperature sensing element penetrate through the prism assembly and extend into the lamp inner cover 7, and the second temperature sensing element obtains the temperature of the airport pavement surface and the temperature of the lamp top cover 2 under the action of the external environment containing the airplane wake flow, the third temperature perception element is used for obtaining the temperature of the lamp top cover 2, wherein the bulb assembly, the second temperature perception element and the third temperature perception element are connected with the wiring terminal fixing end 8 through wires, and the wires of the wiring terminal fixing end 8 are led out through wire outlets at the bottoms of the lamp inner cover 7 and the protective sleeve 9 and are connected with an external power line.
Further, the prism subassembly includes round platform shape prism body, waterproof sealing rubber mat 3 of prism and prism clamp plate 4, the prism holding tank of lamps and lanterns top cap 2 is round platform shape holding tank, round platform shape prism body inlays the dress in round platform shape holding tank, surface machining has the bulb mounting groove with the buffering rubber ring assorted at bulb body top under the prism clamp plate 4, waterproof sealing rubber mat 3 of prism and prism clamp plate 4 set gradually in cylindrical empty section of thick bamboo hole from top to bottom, and prism clamp plate 4 can be dismantled with lamps and lanterns top cap 2 through connecting element and be connected, prism clamp plate 4 center all is processed have with bulb mounting through-hole 5 assorted bulb mounting hole of bulb mount.
Further, the bulb component comprises a bulb body and a bulb fixing frame 5, the bulb fixing frame 5 is fixed on the lower surface of the prism pressing plate 4 through a connecting element, an opening is formed in one side of the bulb fixing frame 5, two symmetrical spherical covers are arranged on two sides of the opening of the bulb fixing frame 5, and the bulb body is installed on the two spherical covers of the bulb fixing frame 5.
Further, the first temperature sensing element comprises a specially-made bolt 1, a toughened glass sealing cover and an infrared radiation sensing element, a sensor accommodating groove is formed in the head of the specially-made bolt 1, the infrared radiation sensing element is arranged in the sensor accommodating groove, the toughened glass sealing cover is buckled on the infrared radiation sensing element and is in sealing connection with the specially-made bolt 1, and the lamp top cover 2 is in spiral connection with the protective sleeve 9 through a screw rod of the specially-made bolt 1.
Further, No. two temperature sensing element and No. three temperature sensing element are temperature sensor 6, and temperature sensor 6 is the cylinder pole, and 6 top surfaces of temperature sensor are the sphere, and the built-in chip perception end of 6 upper end of temperature sensor.
Furthermore, a plurality of notches are processed on the outer wall of the protective sleeve 9 along the circumferential direction.
Furthermore, the temperature sensing device also comprises a fourth temperature sensing element, wherein the fourth temperature sensing element comprises a plurality of distributed fiber bragg grating temperature sensors, and the distributed fiber bragg grating temperature sensors are arranged in a plurality of notches in the outer wall of the protective sleeve 9 barrel body in a thread and sealing glue mode.
Furthermore, the second temperature sensing element and the third temperature sensing element are both resistance type temperature sensing elements.
Furthermore, the first temperature sensing element is a wired infrared radiation sensing element or a wireless infrared radiation sensing element.
When the first temperature sensing element is a wired infrared radiation sensing element, contact type metal sheets are arranged at the bottoms of bolt holes which are formed in the upper surface of the protective sleeve 9 and correspond to the lamp top cover 2 one by one, and the contact type metal sheets are communicated with the bottoms of the specially-made bolts 1 to transmit and collect signals and supply power;
when the first temperature sensing element is a thermal radiation sensing element in a wireless infrared radiation sensing element or a chip based on an MEMS sensing technology, a lithium battery is arranged at the bottom of a bolt hole which is formed in the upper surface of the protective sleeve 9 and corresponds to the lamp top cover 2 one by one, and the lithium battery is communicated with the bottom of the specially-made bolt 1 to supply power.
The test method based on the airport pavement temperature test equipment for the airplane wake flow is realized by the following steps,
step one, mounting airport pavement temperature testing equipment:
installing a plurality of airport pavement temperature test devices in reserved installation hole grooves of navigation aid lighting systems of a take-off and landing section, a quick taxiway entrance and exit and a communication channel at two ends of an airport runway;
step two, adopting a first temperature sensing element to acquire the temperature of the aircraft wake flow:
when the airplane runs through the area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover 2, effective high-temperature a, namely the temperature of airplane wake flow, is collected through a first temperature sensing element of the airport pavement temperature testing equipment, and received temperature signals are collected and recorded and stored in a data collection central library near the airport pavement;
step three, adopting a second temperature sensing element to acquire the temperature of the airport pavement surface and the temperature of the lamp top cover 2 under the action of the external environment containing the aircraft wake flow:
when the airplane runs through the area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover 2, a second temperature sensing element exposed out of the surface of the lamp top cover 2 through the airport pavement temperature testing equipment is influenced by a high-temperature wake field of the airplane and continuously collects effective high-temperature data b in the whole stage that the airplane does not pass through, the airplane runs to the area above and the airplane runs for a certain distance, namely the temperature of the surface of the airport pavement and the temperature of the lamp top cover 2 per se under the action of the external environment containing the wake flow of the airplane are collected and recorded, and the received temperature signals are stored in a data collection central library near the airport pavement;
step four, adopting a third temperature sensing element to acquire the temperature of the lamp top cover 2:
when the airplane runs through the area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover 2, the temperature sensing elements of the airport pavement temperature testing equipment, which are not exposed out of the surface of the lamp top cover 2, are influenced by a high-temperature tail flow field of the airplane and continuously acquire effective high-temperature data c, namely the temperature of the lamp top cover 2, in the whole stage that the airplane does not pass through, the airplane runs to the area above and the airplane runs for a certain distance, and the received temperature signals are acquired and recorded and stored in a data acquisition central library near the airport pavement;
and step five, processing and analyzing based on the acquired data:
step five, first: the effective high-temperature data c obtained in the fourth step is removed from the effective high-temperature data b obtained in the third step to obtain effective high-temperature data d, namely the temperature of the surface of the airport pavement under the action of the external environment including the aircraft wake flow, so as to eliminate the temperature influence of the lamp top cover 2,
step five two: and then, correcting the effective high-temperature data d by using the effective high-temperature data a obtained in the step two, wherein the correcting process is as follows:
if the difference value between the effective high-temperature data a and the effective high-temperature data d is less than 5 ℃, taking the effective high-temperature data d as a temperature value of an area above the airplane when the airplane runs;
if the difference value between the effective high-temperature a and the effective high-temperature data d is not less than 5 ℃, taking the effective high-temperature a as the temperature value of the area above the airplane when the airplane runs;
by eliminating the influence of the temperature on the lamp, the accurate temperature value of the area above the plane running is obtained, the distribution condition and the change rule of the pavement temperature field are further obtained, and data support is provided for material design and structure optimization of the airport pavement.
Compared with the prior art, the invention has the following effects:
1. according to the invention, two temperature sensors are arranged at the light outlet of each prism of the lamp top cover 2 to form a comparison group, the influence caused by the temperature of the lamp top cover 2 is eliminated on the basis of the obtained external comprehensive temperature test value of the sensors, and the accurate temperature field distribution of the high-temperature wake flow is obtained by combining the temperature test value of a special bolt;
2. according to the invention, the heat radiation temperature sensing element is added into the specially-made bolt 1, the upper surface of the specially-made bolt is made of toughened glass, the influence of environmental factors such as wind speed on wake flow temperature measurement is avoided, additional punching is not needed at the installation position, the preparation process of the lamp top cover is simplified, and the maintenance and replacement are facilitated;
3. the upper surface of the lamp top cover 2 integrally presents a trend of high center and low periphery, so that rainwater accumulation is prevented, and the guiding effect of the lamp on the airplane running can be guaranteed;
4. according to the invention, the lamp top cover 2, the prism pressing plate 4, the lamp inner cover 7 and the protective sleeve 9 are respectively sealed and protected by the waterproof sealing rubber gasket and the sealing rubber ring, so that the infiltration of the ground water and the surface water on the airport pavement is avoided, the damage rate of equipment is reduced, and the service life is prolonged;
5. the two symmetrical spheres in the bulb fixing frame structure can meet the contour matching degree of most bulbs in the market so as to achieve a better fixing effect, the shapes of the spheres can be changed and customized according to different types of the bulbs, and the simple installation mode is favorable for later-stage change;
6. the outer wall of the protective sleeve 9 is provided with the notch groove, so that the protective sleeve can be tightly contacted with a road surface structure around equipment, the embedding and extruding effect with the airport road surface structure is improved, and the friction force is increased. Meanwhile, the cylinder body is locally hollow, so that the material cost can be saved on the basis of ensuring the structural strength;
7. in order to meet the test requirements of the surface temperature and the internal temperature of the airport pavement, distributed fiber bragg grating temperature sensors can be distributed in grooves on the outer wall of the protective sleeve 9, and protection is carried out in a thread and glue sealing mode. Therefore, the distribution condition and the change rule of the integral temperature of the airport pavement structure are comprehensively mastered, the structure and material integrated design suitable for the airport service environment is facilitated, and the service life of the airport pavement is prolonged;
8. the invention is suitable for the wake flow temperature measurement requirements of taxiways, communication roads and runways in airport flight areas, does not need to be separately arranged, can protect the structure and the integrity of airport pavement, has strong operability and avoids the condition of larger temperature test error caused by improper operation.
9. The method can accurately acquire the temperature influence of the high-temperature wake flow of the aircraft engine tail nozzle on the airport pavement, particularly the temperature field distribution of the airport asphalt pavement sensitive to temperature, so as to estimate the use performance of the airport pavement in real time and make a preventive maintenance decision in time, and lay a foundation for realizing the structural design and material selection of the airport pavement with different structural partitions. As is well known, in order to ensure that an aircraft can take off, land and glide at night or under low visibility conditions, a large number of visual navigation aid lighting systems including an approach lighting system, a runway lighting system, a taxiway lighting system and the like are arranged in a specified area in an airport flight area. Therefore, considering that the airport reserves the mounting hole slot for the navigation aid lighting system, the invention can better shorten the laying period, save the laying cost, simplify the laying work and ensure the safe operation and non-stop construction of the airport.
10. Temperature, one of the key factors affecting the performance of airport pavement, not only has a large effect on the nonlinear behavior of asphalt pavement materials, but also may generate large temperature stress. However, in the conventional mechanical analysis, the non-uniform form and dynamic performance of the load are mostly concerned, that is, the mechanical behavior of the asphalt pavement at the representative temperature is analyzed empirically in the structural analysis and material test, and the influence of the temperature on the pavement material, especially the temperature disturbance effect of the high-temperature wake flow on the pavement, is ignored. Therefore, in order to analyze and evaluate the service state of the airport pavement more accurately, it is necessary to acquire the distribution and change rule of the pavement temperature field accurately. Based on the above, the statistical rules of the peak value and the time curve of the airport pavement surface temperature are obtained through 3 groups of temperature sensing elements, so that on one hand, the service temperature ranges of different positions of the airport pavement of different functional partitions can be determined, the temperature control indexes of indoor material experiments are guided, the temperature reference range in relevant specifications is corrected, and the pavement material selection is optimized; on the other hand, based on the airport pavement temperature field result obtained by the invention, a temperature-load coupling model can be established by means of a finite element analysis method for simulation analysis, the influence rule of the pavement temperature of the wake flow on the internal mechanical behavior of the pavement is considered, and the most unfavorable working condition (temperature and load combination) of the airport pavement in the actual service environment is further determined, so that the representative load in the pavement specification is corrected, and the airport pavement structure design is optimized. Finally, the airport pavement diseases can be evaluated and early warned in time, the service life and the service quality of the airport are improved, the airplane delay rate is reduced, and the safe operation and transportation efficiency of the airport are ensured.
Drawings
FIG. 1 is a schematic structural diagram of an airport pavement temperature testing device for aircraft wake flow according to the present invention;
fig. 2 is a schematic structural view of the tailored bolt 1 of the present invention;
FIG. 3 is a schematic structural view of the lamp cover 2 of the present invention;
fig. 4 is a schematic structural view of the waterproof sealing rubber gasket 3 for prism of the present invention;
FIG. 5 is a schematic diagram of the construction of the prism press plate 4 of the present invention;
fig. 6 is a schematic structural view of the bulb holder 5 of the present invention;
FIG. 7 is a schematic view of the structure of the temperature sensor 6 of the present invention;
fig. 8 is a schematic structural view of the inner cover 7 of the lamp of the present invention;
fig. 9 is a schematic view of the construction of the protective sleeve 9 of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 9, and the airport pavement temperature testing device for aircraft wake flow in the embodiment comprises a lamp body, a protective sleeve 9, a first temperature sensing element, a second temperature sensing element and a third temperature sensing element, wherein the lamp body comprises a lamp top cover 2, a lamp inner cover 7, a terminal fixing end 8, a prism assembly and a bulb assembly, the lamp top cover 2 comprises a cylindrical hollow cylinder with an edge and an integrated structure, a prism accommodating groove coaxial and communicated with the cylindrical hollow cylinder is processed in the center of the lower end face of the edge of the lamp top cover 2, the prism assembly is installed in the cylindrical hollow cylinder and the prism accommodating groove, the bulb assembly is installed at the bottom of the prism assembly, the terminal fixing end 8 is installed on the inner wall of the lamp inner cover 7, the lamp inner cover 7 is buckled on the bulb assembly and detachably connected with the bottom of the cylindrical hollow cylinder, wire outlet holes are processed at the bottoms of the lamp inner cover 7 and the protective sleeve 9, the protective sleeve 9 is sleeved on the lamp inner cover 7, the upper end of the protective sleeve 9 is detachably connected with the lamp top cover 2 through a first temperature sensing element which is embedded in a bolt mounting hole at the edge of the lamp top cover 2 and used for obtaining the temperature of the aircraft wake flow, a prism light outlet communicated with the prism accommodating cavity is processed on the upper end face of the lamp top cover 2, a reserved mounting through hole and a reserved mounting blind hole are respectively processed on the lamp top cover 2 at the side part of the prism light outlet, the upper ends of a second temperature sensing element and a third temperature sensing element are respectively inserted in the reserved mounting through hole and the reserved mounting blind hole, the lower ends of the second temperature sensing element and the third temperature sensing element penetrate through the prism assembly and extend into the lamp inner cover 7, and the second temperature sensing element obtains the temperature of the airport runway surface and the temperature of the lamp top cover 2 under the action of the external environment containing the aircraft wake flow, the third temperature perception element is used for obtaining the temperature of the lamp top cover 2, wherein the bulb assembly, the second temperature perception element and the third temperature perception element are connected with the wiring terminal fixing end 8 through wires, and the wires of the wiring terminal fixing end 8 are led out through wire outlets at the bottoms of the lamp inner cover 7 and the protective sleeve 9 and are connected with an external power line.
The left end and the right end of the upper surface of the lamp top cover 2 of the embodiment are provided with prism light outlets. The upper surface of the lamp top cover 2 is integrally high in center and low in periphery, rainwater accumulation is prevented, and the guiding effect of the lamp on the running of an airplane can be guaranteed. The lamp top cover 2 adopts a precise isothermal forging technology, has smooth upper surface without sharp edges and corners, has higher wear resistance, corrosion resistance and heat dissipation performance, and can bear certain airplane load; the center of the prism is an integrated prism, and the opening angles of the light outlets on the two sides can meet the straight line or turning driving requirements of the airplane; two groups of temperature sensing elements are arranged on two sides of a light outlet of the prism, mounting holes are reserved, each group comprises two resistance type temperature sensing elements, one reserved hole is a through hole, and the other reserved hole does not expose the surface and is a temperature comparison group of the two resistance type temperature sensing elements.
The outer diameter of the upper surface of the inner lamp cover 7 of the embodiment is consistent with the outer diameter of the lower surface of the top lamp cover 2, and the inner lamp cover 7 is fixed on the lower surface of the top lamp cover 2 through six bolts to form sealing. The sealing rubber ring is adopted between the lamp top cover 2 and the lamp inner cover 7 for sealing and protecting, thereby avoiding the infiltration of the ground water and the surface water of the airport pavement, reducing the damage rate of the equipment and prolonging the service life.
The inner diameter of the upper surface of the protective sleeve 9 is consistent with the outer diameter of the edge of the lamp top cover 2, the depth of the groove in the upper part of the protective sleeve 9 is consistent with the thickness of the edge of the lamp top cover 2, and a sealing rubber ring is adopted between the lamp top cover 2 and the protective sleeve 9 for sealing and protecting, so that the infiltration of the airport pavement underground water and the surface water is avoided, the damage rate of equipment is reduced, and the service life is prolonged.
In the embodiment, the second temperature sensing element and the third temperature sensing element are arranged at the light outlet of the prism at each side of the lamp top cover 2 to form a comparison group, the influence caused by the temperature of the lamp top cover 2 is eliminated on the basis of the obtained external comprehensive temperature test value of the sensor, and the temperature test value of the first temperature sensing element is combined to further obtain accurate temperature field distribution of high-temperature wake flow.
The second embodiment is as follows: the embodiment is described by combining fig. 1 and fig. 3, the prism assembly of the embodiment comprises a truncated cone prism body, a prism waterproof sealing rubber gasket 3 and a prism pressing plate 4, the prism accommodating groove of the lamp top cover 2 is the truncated cone accommodating groove, the truncated cone prism body is embedded in the truncated cone accommodating groove, a bulb mounting groove matched with a buffer rubber ring at the top of the bulb body is machined on the lower surface of the prism pressing plate 4, the prism waterproof sealing rubber gasket 3 and the prism pressing plate 4 are sequentially arranged in a cylindrical hollow cylinder inner hole from top to bottom, the prism pressing plate 4 is detachably connected with the lamp top cover 2 through a connecting element, and bulb mounting through holes matched with a bulb fixing frame 5 are machined in the center of the prism pressing plate 4. So set up, the waterproof sealed cushion of prism 3 and the circular truncated cone prism body lower surface zonulae occludens of this embodiment, and 3 external diameter of waterproof sealed cushion of prism keeps unanimous with the cylindrical empty section of thick bamboo internal diameter of lamps and lanterns top cap 2, and the arch of its upper surface can imbed the space between circular truncated cone prism body and the lamps and lanterns top cap 2 body, reaches sealed and waterproof effect to protect the normal use of circular truncated cone prism body.
The prism clamp plate 4 of this embodiment passes through the bolt fastening in the cylindrical empty section of thick bamboo of lamps and lanterns top cap 2, and 4 external diameter of prism clamp plate keeps unanimous with the size of the waterproof sealing cushion of prism 3, and 4 upper surfaces of prism clamp plate and the waterproof sealing cushion of prism 3 in close contact with, 4 lower surfaces of prism clamp plate flush with the lower surface of lamps and lanterns top cap 2, play fixed and sealed guard action. Meanwhile, a circle of groove is reserved at the center of the lower surface of the prism pressing plate 4, so that the bulb with the waterproof sealing rubber sleeve can be mounted at a later stage. The waterproof sealing rubber gasket 3 of the prism is adopted between the lamp top cover 2 and the prism pressing plate 4 for sealing and protecting, so that the infiltration of the underground water and the surface water of the airport pavement is avoided, the damage rate of the equipment is reduced, and the service life is prolonged. Waterproof sealed cushion of prism 3 and prism clamp plate 4 are the cylinder, offer a plurality of circular through-holes on it, and the round hole of opening with 2 lower surfaces of lamps and lanterns top caps is the one-to-one relation, and waterproof sealed cushion of prism 3 can also play the cushioning effect simultaneously, prevents that the integral type prism from being rolled by the prism clamp plate and destroying under the loading. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: referring to fig. 1 and 6, the bulb assembly of the present embodiment includes a bulb body and a bulb holder 5, the bulb holder 5 is fixed on the lower surface of the prism pressing plate 4 through a connecting element, an opening is formed on one side of the bulb holder 5, two symmetrical spherical covers are arranged on two sides of the opening of the bulb holder 5, and the bulb body is mounted on the two spherical covers of the bulb holder 5. In this way, the bulb holder 5 of the present embodiment is fixed to the lower surface of the prism holder 4 by two bolts, and the folded height and the one-side socket are convenient for mounting and replacing the bulb. Two symmetrical spherical covers in the structure of the bulb fixing frame 5 can meet the contour matching degree of most bulbs on the market to achieve a better fixing effect, the shape of the bulb fixing frame can be changed and customized according to different types of the bulbs, and the simple installation mode is favorable for later-stage replacement. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: the first temperature sensing element of the embodiment is described by combining fig. 1 and fig. 2, and comprises a special bolt 1, a toughened glass sealing cover and an infrared radiation sensing element, wherein a sensor accommodating groove is processed at the head of the special bolt 1, the infrared radiation sensing element is arranged in the sensor accommodating groove, the toughened glass sealing cover is buckled on the infrared radiation sensing element, the toughened glass sealing cover is connected with the special bolt 1 in a sealing manner, and a lamp top cover 2 is in spiral connection with a protective sleeve 9 through a screw rod of the special bolt 1. With the arrangement, the special bolt 1 of the embodiment is a bolt with an infrared radiation sensing element, the micro thermal radiation sensing element is arranged in the head of the special bolt 1 on the premise of ensuring the fixing effect of the bolt, the special bolt is covered and sealed by toughened glass, and the screw rod of the special bolt 1 is tightly connected with the lamp top cover 2 into a whole through the embedding and extruding effect of the threads. A heat radiation temperature sensing element is added into the specially-made bolt 1, the upper surface of the specially-made bolt is made of toughened glass, the influence of environmental factors such as wind speed on wake flow temperature measurement is avoided, additional punching is not needed at the installation position, the preparation process of the lamp top cover is simplified, and the maintenance and the replacement are facilitated. The protective sleeve 9 is cylindrical, the inner diameter and the depth of a groove of the protective sleeve are determined according to the size of the lamp inner cover 7, bolt holes which correspond to the lamp top cover 2 one by one are formed in the upper surface of the protective sleeve, and contact type metal sheets are arranged at the bottoms of the bolt holes and communicated with the bottoms of the special bolts 1 to transmit and collect signals and supply power. If a wireless transmission thermal radiation sensing element or a chip based on the MEMS sensing technology is used in the specially-made bolt 1, it is not necessary to provide a contact-type metal sheet at the bottom of the protective sleeve 9. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1 and 7, the present embodiment will be described, in which the second temperature sensing element and the third temperature sensing element are both temperature sensors 6, the temperature sensors 6 are cylindrical rods, the top surfaces of the temperature sensors 6 are spherical surfaces, and the upper end portions of the temperature sensors 6 are provided with chip sensing terminals. So set up, install a temperature sensor 6 through the through-hole of reserving in prism clamp plate 4, the waterproof sealed cushion of prism 3 and the lamps and lanterns top cap 2 to flushing with lamps and lanterns top cap 2 upper surface, another temperature sensor 6 through the through-hole of reserving on prism clamp plate 4, the waterproof sealed cushion of prism 3 install to lamps and lanterns top cap inside hole groove in, do not expose the upper surface of lamps and lanterns top cap 2. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: referring to fig. 1 and 9, the embodiment is described, and the outer wall of the protective sleeve 9 of the embodiment is formed with a plurality of notches along the circumferential direction. In this way, the notch on the protective sleeve 9 of the present embodiment can be brought into close contact with the pavement structure around the equipment, thereby improving the insertion and extrusion effect with the airport pavement structure and increasing the friction force. Meanwhile, the cylinder body is locally hollow, so that the material cost can be saved on the basis of ensuring the structural strength. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1 and 9, and the embodiment further includes a fourth temperature sensing element, where the fourth temperature sensing element includes a plurality of distributed fiber bragg grating temperature sensors, and the distributed fiber bragg grating temperature sensors are installed in a plurality of notches in the outer wall of the protective sleeve 9 through threads and a sealing manner. So set up, in order to satisfy the test demand of airport pavement surface temperature and inside temperature simultaneously, can lay distributed fiber grating temperature sensor in 9 barrel outer walls grooving of protective sleeve to protect through screw thread and the mode of sealing glue. Therefore, the distribution condition and the change rule of the whole temperature of the airport pavement structure are comprehensively mastered, the integrated design of the structure and the material suitable for the airport service environment is facilitated, and the service life of the airport pavement is prolonged. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 and 7, and the second temperature sensing element and the third temperature sensing element of the present embodiment are both resistance temperature sensing elements. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six or seven.
The specific implementation method nine: in the present embodiment, the first temperature sensing element of the present embodiment is a wired infrared radiation sensing element or a wireless infrared radiation sensing element, which is described with reference to fig. 1 and 2. With the arrangement, when the first temperature sensing element is a wired infrared radiation sensing element, contact type metal sheets are arranged at the bottoms of the bolt holes which are formed in the upper surface of the protective sleeve 9 and correspond to the lamp top cover 2 one by one, and the contact type metal sheets are communicated with the bottoms of the specially-made bolts 1 to transmit and collect signals and supply power; when the first temperature sensing element is a thermal radiation sensing element in a wireless infrared radiation sensing element or a chip based on an MEMS sensing technology, a lithium battery is arranged at the bottom of a bolt hole which is formed in the upper surface of the protective sleeve 9 and corresponds to the lamp top cover 2 one by one, and the lithium battery is communicated with the bottom of the specially-made bolt 1 to supply power. Other compositions and connection relationships are the same as those in the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment.
The detailed implementation mode is ten: the present embodiment is described with reference to fig. 1 to 9, and a method for testing an airport pavement temperature test device for an aircraft wake according to any one of the first to ninth embodiments of the present embodiment is implemented by the following steps,
step one, mounting airport pavement temperature testing equipment:
installing a plurality of airport pavement temperature test devices in reserved installation hole grooves of navigation aid lighting systems of a take-off and landing section, a quick taxiway entrance and exit and a communication channel at two ends of an airport runway;
step two, adopting a first temperature sensing element to acquire the temperature of the aircraft wake flow:
when an airplane runs through an area above airport pavement temperature testing equipment, high-temperature gas ejected by an airplane engine tail nozzle acts on a lamp top cover 2, effective high-temperature a is acquired through a first temperature sensing element of the airport pavement temperature testing equipment, the effective high-temperature a refers to the temperature of the airplane engine tail nozzle ejected by the first temperature sensing element during sudden rising, namely the temperature of airplane wake flow, and the received temperature signal is acquired and recorded and stored in a data acquisition central library near the airport pavement;
step three, adopting a second temperature sensing element to acquire the temperature of the airport pavement surface and the temperature of the lamp top cover 2 under the action of the external environment containing the aircraft wake flow:
when the airplane runs through the area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover 2, a second temperature sensing element exposed out of the surface of the lamp top cover 2 through the airport pavement temperature testing equipment is influenced by a high-temperature wake field of the airplane and continuously collects effective high-temperature data b in the whole stage that the airplane does not pass through, the airplane runs to the area above and the airplane runs for a certain distance, namely the temperature of the surface of the airport pavement and the temperature of the lamp top cover 2 per se under the action of the external environment containing the wake flow of the airplane are collected and recorded, and the received temperature signals are stored in a data collection central library near the airport pavement;
step four, adopting a third temperature sensing element to acquire the temperature of the lamp top cover 2:
when the airplane runs through the area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover 2, the temperature sensing elements of the airport pavement temperature testing equipment, which are not exposed out of the surface of the lamp top cover 2, are influenced by a high-temperature tail flow field of the airplane and continuously acquire effective high-temperature data c, namely the temperature of the lamp top cover 2, in the whole stage that the airplane does not pass through, the airplane runs to the area above and the airplane runs for a certain distance, and the received temperature signals are acquired and recorded and stored in a data acquisition central library near the airport pavement;
and step five, processing and analyzing based on the acquired data:
step five, first: the effective high-temperature data c obtained in the fourth step is removed from the effective high-temperature data b obtained in the third step to obtain effective high-temperature data d, namely the temperature of the surface of the airport pavement under the action of the external environment including the aircraft wake flow, so as to eliminate the temperature influence of the lamp top cover 2,
step five two: and then, correcting the effective high-temperature data d by using the effective high-temperature data a obtained in the step two, wherein the correcting process is as follows:
if the difference value between the effective high-temperature data a and the effective high-temperature data d is less than 5 ℃, taking the effective high-temperature data d as a temperature value of an area above the airplane when the airplane runs;
if the difference value between the effective high-temperature a and the effective high-temperature data d is not less than 5 ℃, taking the effective high-temperature a as the temperature value of the area above the airplane when the airplane runs;
by eliminating the influence of the temperature on the lamp, the accurate temperature value of the area above the plane running is obtained, the distribution condition and the change rule of the pavement temperature field are further obtained, and data support is provided for material design and structure optimization of the airport pavement. Other compositions and connections are the same as those of the first, second, third, fourth, fifth, sixth, seventh, eighth or ninth embodiments.
In this embodiment, the first temperature sensing element can obtain the effective high temperature a only when the aircraft passes through the area above the testing device of the present invention, and the second temperature sensing element and the third temperature sensing element are continuously affected by the high temperature wake field of the aircraft (the aircraft does not pass through the area above the aircraft and the aircraft travels a distance) to continuously collect the effective high temperature data. Therefore, the invention aims to obtain the temperature change condition of the effective high-temperature data d in the whole process of passing the lamp by the airplane. In the stage that the airplane just runs to the area above the lamp, the effective high-temperature data d is corrected by using the effective high-temperature a, and if the difference value of the effective high-temperature data d and the effective high-temperature data d is within a reasonable range, the temperature is 4 as the main point; and if the difference between the temperature and the temperature is too large (more than or equal to 5 ℃), taking the temperature 1 as the temperature value of the area above the airplane.
The first temperature sensing element, the second temperature sensing element and the third temperature sensing element can acquire and store temperature data through wires and an external digital display paperless recorder, and the original temperature data acquired by the recorder can be processed at the later stage.
The working principle of the first temperature sensing element is as follows:
the light with the wavelength within the range of 0.76-400 microns in the spectrum is infrared rays in invisible light, and all objects higher than an absolute zero point (-273.15 ℃) can generate the infrared rays and change along with the temperature change of the object temperature. The invention adopts an infrared heat radiation temperature sensing element which is a thermosensitive type sensitive to infrared rays, mainly comprises an optical system, a detection element and a conversion circuit, and has the working principle that the optical element receives infrared light emitted by an object, after the infrared light is received by the thermosensitive type detection element, the thermistor can generate temperature change under the action of infrared radiation, the resistance value of the thermistor can change, and the temperature change is converted into an electric signal through the conversion circuit to be output.
E＝Rδε(T4-T0 4)
Wherein E is the degree of radiation extraction, in W/m3(ii) a R is the sensitivity of the sensing element; delta is the Stefan-Boltzmann constant and has a value of 5.67X 10-8W/(m2·K4) (ii) a ε is the radiance of the object; t is the temperature of the object to be measured, and the unit is K; t is0Is the ambient temperature around the object in K, which can be a value for a particular application.
The working principle of the second temperature sensing element and the third temperature sensing element is as follows:
the thermal resistance temperature sensor is a sensor thermometer for measuring temperature by using the principle that the resistance value of a conductor or a semiconductor changes with the temperature.
RT＝R0(1+A·T+B·T2) 0℃≤T＜850℃
Rt＝R0[1+A·T+B·T2+C·(T-100)3] -200℃＜T＜0℃
Wherein R is0Resistance value at 0 ℃ (look-up table); A. b, C are all defined coefficients, a is 3.940 × 10-3，B＝-5.802 ×10-7，C＝-4.274×10-12。
Principle of operation
The working principle of the airport pavement temperature testing device for airplane wake flow according to the present invention is described with reference to fig. 1 to 9: in specific implementation process, invert lamps and lanterns top cap 2 on the platform earlier and clearance prism lower surface, place prism waterproof sealing cushion 3 on the prism according to the preformed hole position, the protruding of 3 upper surfaces of inspection prism waterproof sealing cushion and the recess in close contact with of 2 lower surfaces of lamps and lanterns top cap, place prism clamp plate 4 on prism waterproof sealing cushion 3 according to the preformed hole position again, seal 2 bottoms of lamps and lanterns top cap through 4 bolts according to the circumference range on the prism clamp plate. Secondly, pass through the through-hole that reserves on prism clamp plate 4 and the waterproof sealing rubber mat 3 of prism in proper order with 4 temperature sensor and install to lamps and lanterns top cap upper surface and inside, connect temperature sensor other end interface on the terminal 8 of the inside lamp inner cup. And then the bulb fixing frame 5 is fixed on the lower surface of the prism pressing plate through two bolts to form a whole, the bulb is inserted from an opening on one side of the fixing frame, a buffer rubber ring on the top of the bulb is in close contact with a groove on the lower surface of the prism to form sealing, and one end of a bulb lead is connected onto a wiring terminal 8 inside the lamp inner cover 7. Then, the lamp inner cover 7 and the lamp top cover 2 are tightly connected into a whole through 6 bolts circumferentially arranged on the edge of the lamp inner cover, and the bottom of the lamp top cover 2 is sealed and protected. The upper surface of the groove of the protective sleeve 9 is provided with a waterproof rubber ring, and then the lamp main body is integrally arranged, and the waterproof rubber ring and the lamp main body are fixed and connected through 4 special bolts 1. And finally, determining a main test point position of the wake temperature of the airport pavement, coring the airport pavement structure by using a core-taking machine, and enabling the lead to penetrate out of the pavement structure through a sleeve pre-embedded in the pavement so as to be conveniently connected with an external power supply and sensor demodulation equipment. And slowly placing the temperature testing equipment connected into a whole into the core groove, and filling glue with good thermal conductivity and fluidity into the glue injection seam for waiting solidification, so that the temperature testing equipment and the airport pavement structure are glued into a whole.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an airport pavement temperature test equipment to aircraft wake which characterized in that: the LED lamp comprises a lamp body, a protective sleeve (9), a first temperature sensing element, a second temperature sensing element and a third temperature sensing element, wherein the lamp body comprises a lamp top cover (2), a lamp inner cover (7), a binding post fixed end (8), a prism assembly and a bulb assembly, the lamp top cover (2) comprises a cylindrical hollow cylinder with an edge and an integrated structure, a prism accommodating groove which is coaxial and communicated with the cylindrical hollow cylinder is processed at the center of the lower end face of the edge of the lamp top cover (2), the prism assembly is installed in the cylindrical hollow cylinder and the prism accommodating groove, the bulb assembly is installed at the bottom of the prism assembly, the binding post fixed end (8) is installed on the inner wall of the lamp inner cover (7), the lamp inner cover (7) is buckled on the bulb assembly and is detachably connected with the bottom of the cylindrical hollow cylinder, wire outlet holes are processed at the bottoms of the lamp inner cover (7) and the protective sleeve (9), the protective sleeve (9) is sleeved on the lamp inner cover (7), the upper end of the protective sleeve (9) is detachably connected with the lamp top cover (2) through a first temperature sensing element, the first temperature sensing element is embedded in a bolt mounting hole at the edge of the lamp top cover (2) and used for obtaining the temperature of airplane wake flow, a prism light outlet communicated with a prism accommodating cavity is processed on the upper end face of the lamp top cover (2), a reserved mounting through hole and a reserved mounting blind hole are respectively processed on the lamp top cover (2) at the side part of the prism light outlet, the upper ends of a second temperature sensing element and a third temperature sensing element are respectively inserted into the reserved mounting through hole and the reserved mounting blind hole, the lower ends of the second temperature sensing element and the third temperature sensing element penetrate through the prism assembly and extend into the lamp inner cover (7), and the second temperature sensing element obtains the temperature of the surface of an airport pavement and the temperature of the lamp top cover (2) under the action of the external environment including the airplane wake flow, the third temperature perception element is used for obtaining the temperature of the lamp top cover (2), the airfield pavement surface temperature influenced by the bulb assembly and the second temperature perception element and the third temperature perception element are connected with the terminal fixing end (8) through wires, and the wires of the terminal fixing end (8) are led out through wire outlets at the bottoms of the lamp inner cover (7) and the protective sleeve (9) in sequence and are connected with an external power line.
2. The airport pavement temperature testing apparatus for aircraft wakes according to claim 1, wherein: prism subassembly includes round platform shape prism body, waterproof sealing rubber mat (3) of prism and prism clamp plate (4), the prism holding tank of lamps and lanterns top cap (2) is round platform shape holding tank, round platform shape prism body inlays the dress in round platform shape holding tank, surface processing has the bulb mounting groove with the buffering rubber ring assorted at bulb body top under prism clamp plate (4), waterproof sealing rubber mat of prism (3) and prism clamp plate (4) set gradually in cylindrical empty section of thick bamboo hole from top to bottom, and prism clamp plate (4) can be dismantled with lamps and lanterns top cap (2) through connecting element and be connected, prism clamp plate (4) center all processes the bulb installation through-hole with bulb mount (5) assorted of bulb subassembly.
3. An airport pavement temperature testing apparatus for aircraft wakes according to claim 2, wherein: the bulb component comprises a bulb body and a bulb fixing frame (5), the bulb fixing frame (5) is fixed on the lower surface of the prism pressing plate (4) through a connecting element, an opening is formed in one side of the bulb fixing frame (5), two symmetrical spherical covers are arranged on two sides of the opening of the bulb fixing frame (5), and the bulb body is installed on the two spherical covers of the bulb fixing frame (5).
4. An airport pavement temperature testing apparatus for aircraft wakes according to claim 3, wherein: the first temperature sensing element comprises a specially-made bolt (1), a toughened glass sealing cover and an infrared radiation sensing element, a sensor accommodating groove is formed in the head of the specially-made bolt (1), the infrared radiation sensing element is arranged in the sensor accommodating groove, the toughened glass sealing cover is buckled on the infrared radiation sensing element and is in sealing connection with the specially-made bolt (1), and a lamp top cover (2) is in spiral connection with a protective sleeve (9) through a screw of the specially-made bolt (1).
5. The airport pavement temperature testing apparatus for aircraft wakes according to claim 4, wherein: the second temperature sensing element and the third temperature sensing element are both temperature sensors (6), the temperature sensors (6) are cylindrical rods, the top surfaces of the temperature sensors (6) are spherical surfaces, and chip sensing ends are arranged in the upper end portions of the temperature sensors (6).
6. The airport pavement temperature testing apparatus for aircraft wakes according to claim 5, wherein: the outer wall of the protective sleeve (9) is provided with a plurality of notches along the circumferential direction.
7. The airport pavement temperature testing apparatus for aircraft wakes according to claim 6, wherein: the temperature sensing device further comprises a fourth temperature sensing element, wherein the fourth temperature sensing element comprises a plurality of distributed fiber bragg grating temperature sensors, and the distributed fiber bragg grating temperature sensors are installed in a plurality of notches in the outer wall of the protective sleeve (9) in a thread and sealing glue mode.
8. The airport pavement temperature testing apparatus for aircraft wakes according to claim 7, wherein: the second temperature sensing element and the third temperature sensing element are both resistance type temperature sensing elements.
9. The airport pavement temperature testing apparatus for aircraft wakes according to claim 8, wherein: the first temperature sensing element is a wired infrared radiation sensing element or a wireless infrared radiation sensing element.
10. A method for testing the airport pavement temperature test equipment for the aircraft wake according to any one of claims 1 to 9, characterized in that: the method for testing the temperature of the airport pavement aiming at the aircraft wake flow is realized by the following steps,
step one, mounting airport pavement temperature testing equipment:
installing a plurality of airport pavement temperature test devices in reserved installation hole grooves of navigation aid lighting systems of a take-off and landing section, a quick taxiway entrance and exit and a communication channel at two ends of an airport runway;
step two, adopting a first temperature sensing element to acquire the temperature of the aircraft wake flow:
when an airplane runs through an area above airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on a lamp top cover (2), effective high-temperature a, namely the temperature of airplane wake flow, is collected through a first temperature sensing element of the airport pavement temperature testing equipment, and received temperature signals are collected and recorded and stored in a data collection central library near the airport pavement;
step three, acquiring the surface temperature of the airport pavement and the temperature of the lamp top cover (2) by adopting a second temperature sensing element under the action of the external environment containing aircraft wake flow:
when an airplane runs through an area above the airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on the lamp top cover (2), and a second temperature sensing element exposed out of the surface of the lamp top cover (2) through the airport pavement temperature testing equipment is influenced by a high-temperature wake field of the airplane and continuously collects effective high-temperature data b in the whole stage that the airplane does not run through the area above the lamp top cover and the airplane runs for a certain distance, namely the temperature of the surface of the airport pavement and the temperature of the lamp top cover (2) under the action of an external environment containing the wake flow of the airplane, and the received temperature signals are collected and recorded and stored in a data collection central library near the airport pavement;
step four, adopting a third temperature sensing element to acquire the temperature of the lamp top cover (2):
when an airplane runs through an area above airport pavement temperature testing equipment, high-temperature gas ejected by a tail nozzle of an airplane engine acts on a lamp top cover (2), and effective high-temperature data c, namely the temperature of the lamp top cover (2), is continuously acquired and stored in a data acquisition central library near the airport pavement, all the time in the whole stage that the airplane does not pass through the airport pavement temperature testing equipment, the airplane runs to the area above the lamp top cover (2) and the airplane runs for a distance, under the influence of a high-temperature wake field of the airplane, and effective high-temperature data c is continuously acquired;
and step five, processing and analyzing based on the acquired data:
step five, first: the effective high-temperature data c obtained in the fourth step is removed from the effective high-temperature data b obtained in the third step to obtain effective high-temperature data d, namely the temperature of the surface of the airport pavement under the action of the external environment including the aircraft wake flow, so as to eliminate the temperature influence of the lamp top cover (2),
step five two: and then, correcting the effective high-temperature data d by using the effective high-temperature data a obtained in the step two, wherein the correcting process is as follows:
if the difference value between the effective high-temperature data a and the effective high-temperature data d is less than 5 ℃, taking the effective high-temperature data d as a temperature value of an area above the airplane when the airplane runs;
if the difference value between the effective high-temperature a and the effective high-temperature data d is not less than 5 ℃, taking the effective high-temperature a as the temperature value of the area above the airplane when the airplane runs;
by eliminating the influence of the temperature on the lamp, the accurate temperature value of the area above the plane running is obtained, the distribution condition and the change rule of the pavement temperature field are further obtained, and data support is provided for material design and structure optimization of the airport pavement.
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| CN103983458A (en) * | 2014-05-12 | 2014-08-13 | 中国航空工业集团公司沈阳飞机设计研究所 | Testing method for temperature fields of tail jet flow of engine |
| CN107192417A (en) * | 2017-07-21 | 2017-09-22 | 中国人民解放军空军工程大学 | Pavement airstrip road face performance method of testing based on uninterrupted traffic |
| CN111256869A (en) * | 2020-01-19 | 2020-06-09 | 哈尔滨工业大学 | Optical fiber sensor for road for testing temperature field along depth direction and arrangement method |
| CN113251996A (en) * | 2020-12-21 | 2021-08-13 | 同济大学 | Intelligent runway |
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