CN110196267B - Test method of infrared road detection device based on electromagnetic or microwave emission - Google Patents
Test method of infrared road detection device based on electromagnetic or microwave emission Download PDFInfo
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- CN110196267B CN110196267B CN201910394077.4A CN201910394077A CN110196267B CN 110196267 B CN110196267 B CN 110196267B CN 201910394077 A CN201910394077 A CN 201910394077A CN 110196267 B CN110196267 B CN 110196267B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
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Abstract
The invention discloses a test method of an infrared road detection device based on electromagnetic or microwave emission, which is characterized by comprising the following steps: s1: judging the pavement material; s2: when the pavement material is modified asphalt pavement doped with magnetic conductive material, such as steel grit, steel wool, conductive steel fiber and industrial waste steel slag, the pavement can be heated by an electromagnetic induction method, and when the pavement material is modified asphalt pavement doped with microwave absorbing material, such as magnetite powder, activated carbon, carbon nano tubes and graphene, the pavement can be heated by microwaves. The heating mode of the invention is flexible, the adaptability is strong, and the problem that the detection effect of the infrared road nondestructive detection technology is influenced because the proper heating mode is difficult to select to rapidly heat different asphalt pavements when the infrared road nondestructive detection device is used is avoided.
Description
Technical Field
The invention belongs to the technical field of infrared flaw detection of pavement materials, and particularly relates to a test method of an infrared road detection device based on electromagnetic or microwave emission.
Background
The development of traffic is an important guarantee of national economy, the basis of the traffic is roads, material transportation and personnel trip can not be carried out without the roads, and the quality of road engineering must be ensured in order to ensure the development of the traffic. Therefore, means for inspecting the surface and the interior of the road surface material to be inspected, i.e., a nondestructive inspection technique, without damaging the road surface, is of great significance to the construction and maintenance of the road. Although there are many nondestructive testing methods, such as X-ray inspection, ultrasonic inspection, magnetic particle inspection, etc., more convenient and nondestructive testing techniques that can adapt to specific situations are needed.
The infrared nondestructive testing is a new technology in nondestructive testing methods, has the characteristics of high speed, low cost and large range, and the testing result is displayed in an infrared thermography mode and is very visual. However, infrared flaw detection has some fatal weaknesses, the technical scheme is realized by using heat, the requirement on temperature is high, a high-efficiency heating method is urgently needed, and the problems that different materials need different heating modes, the materials are damaged by heating for too long time and the like exist, the actual flaw detection effect is influenced, and the application of infrared road nondestructive flaw detection cannot be popularized.
The invention aims to provide a test method of an infrared road detection device based on emitted electromagnetic waves or microwaves, which can determine whether electromagnetic induction heating or microwave heating is adopted according to different road surface materials when the infrared road disease nondestructive detection device is used, and can efficiently use electromagnetic waves or microwaves to rapidly heat the road surface materials by utilizing magnetism gathering and reflecting effects, thereby solving the problem that the road surface materials in the infrared road nondestructive detection technology have strict requirements on heating modes and temperatures.
Disclosure of Invention
The invention aims to provide a test method of an infrared road detection device based on electromagnetic or microwave emission, which aims to solve the problem that a heating mode and temperature requirements of a surface material are strict when the existing infrared road nondestructive detection device is used for detection.
In order to achieve the purpose, the invention provides the following technical scheme: a test method of an infrared road detection device based on electromagnetic or microwave emission is characterized by comprising the following steps:
s1: judging the pavement material;
s2: when the pavement material is a modified asphalt pavement doped with a magnetic material, such as steel grit, steel wool, conductive steel fibers and industrial waste steel slag, the pavement can be heated by an electromagnetic induction method, and when the pavement material is a modified asphalt pavement doped with a microwave absorbing material, such as magnetite powder, activated carbon, carbon nano tubes and graphene, microwave heating is required;
s3: when the pavement material is a modified asphalt pavement doped with a magnetic conductive material, all the electromagnetic/microwave generating plates 701 on the top surface of the box-shaped device rotate for 180 degrees around the rotating shaft 6, the electromagnetic exciting coils 8 of all the electromagnetic/microwave generating plates 701 face downwards to the material to be heated, the special material plates 7 on the periphery of the rotating device 2 rotate around the rotating shaft 6 connected with the bottom end of the vertical joint 13 in a certain sequence (the situation that the special material plates at four corners collide and are clamped when rotating at the same time is avoided), all the low-resistance and low-magnetic-permeability metallic material surfaces 11 are changed into high-resistance and high-magnetic-permeability soft magnetic material surfaces 10 facing towards the inner side of the box-shaped device, and at the moment, the inside of the box-shaped device is completely provided with the high-resistance and high-magnetic;
s4: when the pavement material is a modified asphalt pavement doped with microwave absorbing material; rotating all the electromagnetic/microwave generating plates 701 on the top surface of the box-shaped device around a rotating shaft 6, enabling the microwave generating devices 9 of all the electromagnetic/microwave generating plates 701 to face downwards to materials to be heated, and enabling the special material plates 7 around the rotating device 2 to rotate around the rotating shaft 6 connected with the bottom end of the vertical joint 13 according to a certain sequence (avoiding the situation that the special material plates at four corners collide and are clamped when rotating simultaneously), so that all the high-resistance high-permeability soft magnetic material surfaces 10 are changed into low-resistance low-permeability metallic material surfaces 11 facing towards the inner side of the box-shaped device, and at the moment, all the inner parts of the box-shaped device are low-resistance low-permeability metallic material surfaces 11;
s5: controlling the first side shield 301 and the second side shield 302 to close towards the center;
s6: the electromagnetic exciting coil 8 or the microwave generating device 9 is started to emit a magnetic field or microwaves to heat the pavement material through an external power supply, the heating time length is adjusted according to the pavement material, the infrared imaging precision is guaranteed, and the pavement material is prevented from being damaged by long-time heating;
s7: stopping heating the pavement material by the electromagnetic exciting coil 8 or the microwave generating device 9 through an external power supply, and opening a first side shielding case 301 and a second side shielding case 302 of the shielding device 3 to two sides;
s8: all the transverse joints 12 of the rotating device 2 are rotated by 90 degrees around the fixed shaft 14, the transverse joints 12 drive all the electromagnetic/microwave generating plates 701 to rotate through the rotating shaft 6, all the electromagnetic/microwave generating plates 701 on the top surface are rotated by 90 degrees around the rotating joint 5, and all the electromagnetic/microwave generating plates 701 on the top surface of the box-type device are opened upwards along the central gap;
s9: controlling the infrared camera 1 to move and shooting the material heated below in time, and analyzing the damage condition of the material by a detection person through the obtained infrared image;
s10: all the electromagnetic/microwave generating boards 701 on the top surface of the cassette apparatus are returned from both sides to the center, and at this time, the infrared nondestructive inspection of another part of the material or other materials can be continued by repeating the steps S1 to S10.
Preferably, one surface of the special material plate 7 is a soft magnetic material surface 10 made of a high-resistance high-permeability material, and the other surface is a metallic material surface 11 made of a low-resistance low-permeability material, and the whole body of the shielding device 3 is made of a low-resistance low-permeability metallic material.
Preferably, the rotating shaft 6 is made of polytetrafluoroethylene, polypropylene, ceramic or plastic which is not affected by magnetic field or microwave.
Preferably, the electromagnetic/microwave generating plate 701 has an electromagnetic excitation coil 8 mounted on a large-resistance high-permeability soft magnetic material surface 10, and a microwave generating device 9 mounted on a small-resistance low-permeability metallic material surface 11.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention utilizes two heating methods, the heating method is flexible and has strong adaptability, and the electromagnetic induction or microwave heating method can be selected according to different pavement materials to heat the pavement materials. By using the rotating device, a user can determine whether to adopt electromagnetic induction heating or microwave heating according to a pavement material, quickly heat the modified asphalt pavement added with magnetic materials such as steel grit, steel wool, conductive steel fibers and industrial waste steel slag by using an electromagnetic induction principle, quickly heat the modified asphalt pavement added with microwave absorbing materials such as magnetite powder, activated carbon, carbon nanotubes, graphene and the like by using microwaves, have flexible heating modes and dual purposes, and expand the application range of an infrared nondestructive testing technology by selecting different heating methods, so that the method can be extended to infrared nondestructive testing of other various materials.
2. The invention achieves the automatic conversion of electromagnetic induction heating and microwave heating by rotating the electromagnetic/microwave generating plate, and simultaneously, the magnetic gathering effect of the surface of the high-resistance high-permeability soft magnetic material and the microwave reflecting effect of the surface of the low-resistance low-permeability metallic material enable a magnetic field or microwaves to gather at the bottom of the device, thereby greatly improving the heating efficiency of the material. The electromagnetic/microwave generating plate on the top surface of the box-type device is provided with an electromagnetic exciting coil on a large-resistance high-permeability soft magnetic material surface, and a microwave generating device on a small-resistance low-permeability metallic material surface.
3. The invention adopts a method for limiting the action range of a magnetic field or microwave by using a box-type device and a shielding device, and the shielding method is used for two purposes, thereby not only limiting the action range of the magnetic field or microwave, further reducing the possibility of magnetic leakage or microwave leakage, preventing the possible harm of the magnetic field or microwave to people, but also preventing the influence of the surrounding environment on the device during the experiment, and improving the precision of infrared heating nondestructive detection. The rotating device is a box-shaped device formed by an electromagnetic/microwave generating plate, and the large-resistance high-permeability soft magnetic material surface or the small-resistance low-permeability metallic material surface of a special material plate in the box-shaped device limits the acting range of a magnetic field or microwave; and a shielding device is used, the whole body of the shielding device is made of a low-resistance low-permeability metallic material, the shielding device can be tightly closed when the system works, the interference of air temperature and other surrounding environment factors to the device during heating is further reduced while a magnetic field or microwaves are limited, the precision of infrared heating nondestructive testing is improved, the damage of the strong magnetic field or microwaves to experimenters can be prevented, and the damage and the influence among a heating source, the surrounding environment and the experimenters in the infrared road nondestructive testing technology are avoided.
4. The invention can convert the electromagnetic induction heating method and the microwave heating method according to the pavement material, the heating method is flexible to select, no matter the electromagnetic induction heating method or the microwave heating method, the two heating methods have high energy utilization rate, the asphalt pavement can be efficiently and quickly heated under the condition of non-contact with the pavement, the energy is more saved than other heating methods, and the electromagnetic or microwave heating method does not cause pollution to the surrounding environment, thereby being environment-friendly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a state diagram of the present invention in use;
FIG. 3 is a schematic diagram of an electromagnetic/microwave generating plate structure according to the present invention;
FIG. 4 is a schematic view of a stationary shaft according to the present invention;
FIG. 5 is a front view of an electromagnetic/microwave generating plate of the present invention;
FIG. 6 is a side view of an electromagnetic/microwave generating plate of the present invention;
fig. 7 is a top view of the electromagnetic/microwave generating plate of the present invention.
In the figure: the method comprises the following steps of 1-an infrared camera, 2-a rotating device, 3-a shielding device, 301-a first side shielding cover, 302-a second side shielding cover, 4-an asphalt pavement structure added with a modified material, 5-a rotating joint, 6-a rotating shaft, 7-a special material plate, 701-an electromagnetic/microwave generating plate, 8-an electromagnetic exciting coil, 9-a microwave generating device, 10-a high-resistance high-permeability soft magnetic material surface, 11-a low-resistance low-permeability metallic material surface, 12-a transverse joint, 13-a vertical joint and 14-a fixed shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides the following technical solutions: a test method of an infrared road detection device based on electromagnetic or microwave emission is characterized by comprising the following steps:
s1: judging the pavement material;
s2: when the pavement material is a modified asphalt pavement doped with a magnetic material, such as steel grit, steel wool, conductive steel fibers and industrial waste steel slag, the pavement can be heated by an electromagnetic induction method, and when the pavement material is a modified asphalt pavement doped with a microwave absorbing material, such as magnetite powder, activated carbon, carbon nano tubes and graphene, microwave heating is required;
s3: when the pavement material is a modified asphalt pavement doped with a magnetic conductive material, all the electromagnetic/microwave generating plates 701 on the top surface of the box-shaped device rotate for 180 degrees around the rotating shaft 6, the electromagnetic exciting coils 8 of all the electromagnetic/microwave generating plates 701 face downwards to the material to be heated, the special material plates 7 on the periphery of the rotating device 2 rotate around the rotating shaft 6 connected with the bottom end of the vertical joint 13 in a certain sequence (the situation that the special material plates at four corners collide and are clamped when rotating at the same time is avoided), all the low-resistance and low-magnetic-permeability metallic material surfaces 11 are changed into high-resistance and high-magnetic-permeability soft magnetic material surfaces 10 facing towards the inner side of the box-shaped device, and at the moment, the inside of the box-shaped device is completely provided with the high-resistance and high-magnetic;
s4: when the pavement material is a modified asphalt pavement doped with microwave absorbing material; rotating all the electromagnetic/microwave generating plates 701 on the top surface of the box-shaped device around a rotating shaft 6, enabling the microwave generating devices 9 of all the electromagnetic/microwave generating plates 701 to face downwards to materials to be heated, and enabling the special material plates 7 around the rotating device 2 to rotate around the rotating shaft 6 connected with the bottom end of the vertical joint 13 according to a certain sequence (avoiding the situation that the special material plates at four corners collide and are clamped when rotating simultaneously), so that all the high-resistance high-permeability soft magnetic material surfaces 10 are changed into low-resistance low-permeability metallic material surfaces 11 facing towards the inner side of the box-shaped device, and at the moment, all the inner parts of the box-shaped device are low-resistance low-permeability metallic material surfaces 11;
s5: controlling the first side shield 301 and the second side shield 302 to close towards the center;
s6: the electromagnetic exciting coil 8 or the microwave generating device 9 is started to emit a magnetic field or microwaves to heat the pavement material through an external power supply, the heating time length is adjusted according to the pavement material, the infrared imaging precision is guaranteed, and the pavement material is prevented from being damaged by long-time heating;
s7: stopping heating the pavement material by the electromagnetic exciting coil 8 or the microwave generating device 9 through an external power supply, and opening a first side shielding case 301 and a second side shielding case 302 of the shielding device 3 to two sides;
s8: all the transverse joints 12 of the rotating device 2 rotate 90 degrees around the fixed shaft 14, the transverse joints 12 drive all the electromagnetic/microwave generating plates 701 to rotate through the rotating shaft 6, all the electromagnetic/microwave generating plates 701 on the top surface rotate 90 degrees around the rotating joint 5, and all the electromagnetic/microwave generating plates 701 on the top surface of the box-type device are opened upwards along the central gap;
s9: controlling the infrared camera 1 to move and shooting the material heated below in time, and analyzing the damage condition of the material by a detection person through the obtained infrared image;
s10: all the electromagnetic/microwave generating boards 701 on the top surface of the cassette apparatus are returned from both sides to the center, and at this time, the infrared nondestructive inspection of another part of the material or other materials can be continued by repeating the steps S1 to S10.
One surface of the special material plate 7 is a soft magnetic material surface 10 made of a high-resistance high-permeability material, the other surface is a metallic material surface 11 made of a low-resistance low-permeability material, and the whole shielding device 3 is made of a low-resistance low-permeability metallic material.
The rotating shaft 6 is made of polytetrafluoroethylene, polypropylene, ceramic or plastic and other materials which are not influenced by a magnetic field or microwaves.
The electromagnetic/microwave generating plate 701 has an electromagnetic excitation coil 8 mounted on a large-resistance high-permeability soft magnetic material surface 10, and a microwave generating device 9 mounted on a small-resistance low-permeability metallic material surface 11.
The utility model provides a device that infrared road disease nondestructive test is carried out to transmission electromagnetism or microwave, includes infrared camera 1, rotary device 2 and shield assembly 3, its characterized in that: the shielding device 3 comprises a first side shielding cover 301 and a second side shielding cover 302, the first side shielding cover 301 and the second side shielding cover 302 are respectively positioned at two sides of the rotating device 2, the infrared camera 1 is positioned right above the rotating device 2, the rotating device 2 forms a bottomless box-shaped device, the box-shaped device comprises an electromagnetic/microwave generating plate 701 at the top surface and a special material plate 7 at the side surface, the electromagnetic/microwave generating plate 701 comprises an electromagnetic exciting coil 8, a microwave generating device 9, a special material plate 7, a rotating joint 5, a transverse joint 12, a vertical joint 13 and a fixed shaft 14, the tail ends of the transverse joint 12 and the vertical joint 13 are connected with a rotating shaft 6, the special material plate 7 is rotatably connected to the outer side of the rotating shaft 6, and the electromagnetic/microwave generating plate 701 is connected with an external power supply. The bottom end of the fixed shaft 14 is fixedly connected with a vertical joint 13, the inner side of the fixed shaft 14 is provided with a rotary joint 5, and one side of the rotary joint 5 is rotatably connected with a transverse joint 12. The special material plate 7 comprises a large-resistance high-permeability soft magnetic material surface 10 and a small-resistance low-permeability metallic material surface 11, and the whole body of the shielding device 3 is made of a small-resistance low-permeability metallic material. One side of the large-resistance high-permeability soft magnetic material surface 10 is fixedly connected with the small-resistance low-permeability metallic material surface 11, and the middle position of the special material plate 7 is connected with the rotating shaft 6. The electromagnetic/microwave generating plate 701 has an electromagnetic excitation coil 8 mounted on the top end of a large-resistance high-permeability soft magnetic material surface 10, and a microwave generating device 9 fixedly mounted on the bottom end of a small-resistance low-permeability metallic material surface 11. The rotating shaft 6 is made of polytetrafluoroethylene, polypropylene, ceramic or plastic and other materials which are not influenced by a magnetic field or microwaves. The infrared camera 1 can perform temperature imaging and can be connected with a temperature controller or a computer host. Electric roller structures are arranged in the first side shield cover 301 and the second side shield cover 302.
The working principle and the using process of the invention are as follows: when the device is used, fig. 2 is a picture of the device during working, the device is carrying out infrared nondestructive detection on the asphalt pavement structure 4 added with the modified material, and the first side edge shielding case 301 and the second side edge shielding case 302 of the shielding device 3 are folded and closed towards the center; when the invention is used for flaw detection, different heating modes are adopted according to different road materials, for example, when electromagnetic induction heating is required to be converted into microwave heating, all the electromagnetic/microwave generating plates 701 on the top surface rotate for 180 degrees around the rotating shaft 6, the microwave generating devices 9 of all the electromagnetic/microwave generating plates 701 face downwards to materials to be heated, all the special material plates 7 around the rotating device 2 rotate around the rotating shaft 6, all the high-resistance high-permeability soft magnetic material surfaces 10 are changed into low-resistance low-permeability metallic material surfaces 11 facing the inner side of the box type device, so that microwaves are reflected and collected, the heating efficiency is improved, meanwhile, the low-resistance low-permeability metallic material surfaces limit the microwave action range in the box type device, and the possibility of microwave leakage is reduced. Otherwise, when electromagnetic induction heating is adopted, the process is similar to the above. Control first side shield cover 301 and second side shield cover 302 and fold to central authorities and close, reduce the phenomenon of magnetic leakage or hourglass microwave, prevent the interference of surrounding environment factor to the experiment, promote the experiment precision to can prevent that strong magnetic field or microwave from causing harm to experimenter, open electromagnetic excitation coil or microwave generating device through external power source afterwards and begin to heat the material. After heating, the first side shield 301 and the second side shield 302 of the shielding device 3 are opened to both sides, then all the electromagnetic/microwave generating boards 701 on the top surface of the box-shaped device rotate around the rotary joint 5 (as shown in fig. 4, the transverse joint 12 can rotate around the fixed shaft 14, so as to drive the electromagnetic/microwave generating boards 701 to rotate upwards), all the electromagnetic/microwave generating boards 701 on the top surface of the box-shaped device are opened upwards along the gap in the center, at this time, infrared imaging can be performed immediately on the material heated below by using the infrared camera 1, and the obtained infrared image can be used for analyzing the damage condition of the material.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A test method of an infrared road detection device based on electromagnetic or microwave emission is characterized by comprising the following steps:
s1: judging the pavement material;
s2: when the pavement material is a modified asphalt pavement doped with a magnetic material, and is doped with steel grit, steel wool, conductive steel fibers and industrial waste steel slag, the pavement can be heated by an electromagnetic induction method, and when the pavement material is a modified asphalt pavement doped with a microwave absorbing material, and is doped with magnetite powder, activated carbon, carbon nano tubes and graphene, microwave heating is needed;
s3: when the pavement material is a modified asphalt pavement doped with magnetic conductive material, all the electromagnetic/microwave generating plates (701) on the top surface of the box-shaped device rotate 180 degrees around the rotating shaft (6), so that the electromagnetic exciting coils (8) on the large-resistance high-magnetic-conductivity soft magnetic material surface (10) in all the electromagnetic/microwave generating plates (701) face downwards to face the material to be heated, and the special material plates (7) around the rotating device (2) rotate around the rotating shaft (6) connected with the bottom end of the vertical joint (13) according to a certain sequence, so that the situation that the special material plates at four corners are collided and clamped when rotating at the same time is avoided, all the surfaces (11) of the low-resistance and low-permeability metallic materials are changed into surfaces (10) of the high-resistance and high-permeability soft magnetic materials which face the inner side of the box type device, and at the moment, the inner part of the box type device is totally provided with the surfaces (10) of the high-resistance and high-permeability soft magnetic materials;
s4: when the pavement material is a modified asphalt pavement doped with microwave absorbing material; all the electromagnetic/microwave generating plates (701) on the top surface of the box-shaped device rotate around the rotating shaft (6), so that the microwave generating devices (9) on the small-resistance low-permeability metallic material surfaces (11) in all the electromagnetic/microwave generating plates (701) downwards face materials to be heated, the special material plates (7) on the periphery of the rotating device (2) rotate around the rotating shaft (6) connected with the bottom end of the vertical joint (13) according to a certain sequence, the situation that the special material plates at four corners collide and are clamped when rotating at the same time is avoided, all the large-resistance high-permeability soft magnetic material surfaces (10) are changed into small-resistance low-permeability metallic material surfaces (11) and face the inner side of the box-shaped device, and at the moment, the inside of the box-shaped device is completely provided with the small-resistance low-permeability metallic material surfaces (11);
s5: controlling the first side shielding cover (301) and the second side shielding cover (302) to be folded and closed towards the center;
s6: an electromagnetic excitation coil (8) or a microwave generating device (9) is started through an external power supply to emit a magnetic field or microwaves to heat the pavement material, the heating time length is adjusted according to the pavement material, the infrared imaging precision is guaranteed, and the pavement material is prevented from being damaged by long-time heating;
s7: stopping heating the pavement material by the electromagnetic exciting coil (8) or the microwave generating device (9) through an external power supply, and opening a first side shielding cover (301) and a second side shielding cover (302) of the shielding device (3) to two sides;
s8: all transverse joints (12) of the rotating device (2) rotate 90 degrees around a fixed shaft (14), the transverse joints (12) drive the electromagnetic/microwave generating plates (701) to rotate through a rotating shaft (6), all the electromagnetic/microwave generating plates (701) on the top surface rotate 90 degrees around a rotating joint (5), and all the electromagnetic/microwave generating plates (701) on the top surface of the box-type device are opened upwards along a central gap;
s9: controlling the infrared camera (1) to move and timely shoot the material heated below, and analyzing the damage condition of the material by a detection person through the obtained infrared image;
s10: all the electromagnetic/microwave generating plates (7) on the top surface of the box-shaped device are reset from two sides to the center, and at the moment, the infrared nondestructive detection on another part of the material or other materials can be continuously carried out by repeating the steps S1 to S10.
2. The method for testing an infrared road detection device based on electromagnetic or microwave transmission according to claim 1, characterized in that: one surface of the special material plate (7) is a high-resistance high-permeability soft magnetic material surface (10), the other surface is a low-resistance low-permeability metallic material surface (11), and the whole body of the shielding device (3) is made of a low-resistance low-permeability metallic material.
3. The method for testing an infrared road detection device based on electromagnetic or microwave transmission according to claim 1, characterized in that: the rotating shaft (6) is made of polytetrafluoroethylene, polypropylene, ceramics or plastics which are not influenced by magnetic fields or microwaves.
4. The method for testing an infrared road detection device based on electromagnetic or microwave transmission according to claim 3, characterized in that: an electromagnetic excitation coil (8) is mounted on a large-resistance high-permeability soft magnetic material surface (10) of the electromagnetic/microwave generating plate (701), and a microwave generating device (9) is mounted on a small-resistance low-permeability metallic material surface (11).
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