Intelligent inspection experiment teaching system for airport navigational light

Abstract

The invention discloses an airport navigational light intelligent inspection experiment teaching system, which relates to the field of intelligent airport construction and comprises an intelligent inspection platform and a teaching platform. The intelligent inspection platform comprises a conventional navigation-aid light inspection system, a detection unit, an information processing unit and a fault information display unit; and the teaching platform is used for setting different fault conditions of the lamp, and is also used for inspecting a specified light loop formed by the dimmer based on an inspection instruction, so as to accurately identify the fault position and the fault type of the lamp. The method has the advantages of simple operation, low installation cost, comprehensive fault type detection, good signal transmission stability and the like. The lamp fault can be quickly and accurately identified, the fault lamp can be positioned, and the construction of a smart airport is facilitated. In addition, the method can play the advantages in an airport actual navigation-aid light inspection system, has good airport applicability, can greatly improve the airport inspection efficiency, and reduces the burden rate of the airport.

Description

Technical Field

[0001] The present invention relates to the field of smart airport construction, and in particular to an airport navigation lighting intelligent inspection experimental teaching system. Background Art

[0002] Airport navigation lights are important approach visual aids that ensure smooth takeoff, landing, and taxiing of aircraft at night and in complex weather conditions. At present, in order to ensure that the navigation lights do not fail, airports need to conduct daily manual inspections to check the brightness of the lamps, find faults and repair them in time. However, this method is not only time-consuming and labor-intensive, but manual inspections may also have the risk of human error. Moreover, with the increase in flight density, busy airports are restricted by downtime, and the time for manual inspections and equipment maintenance after equipment problems are getting shorter and shorter. The pressure on navigation light inspection and maintenance work is increasing, the number of missed inspections is increasing, the maintenance force cannot keep up, and safety hazards are on the rise. Once the navigation light guidance system fails, it will cause major safety hazards and endanger the safety of personnel and property. Therefore, it is very important to carry out research on intelligent inspection of navigation lights, which is of great significance for the inspection and repair of airport navigation light guidance systems and for ensuring the takeoff, landing and taxiing of aircraft.

[0003] Moreover, the current airport teaching courses are closely integrated with the actual application of engineering. Teaching experiments can not only consolidate the effect of basic theoretical knowledge, but also exercise students' comprehensive engineering application ability. Students need to master practical operation skills in the learning process. The intelligent inspection teaching platform provides a simulation environment that enables students to perform practical operations under safe conditions and improve their hands-on ability and practical application ability. Through the teaching platform, students can combine theoretical knowledge with practical operations to deeply understand the working principle, inspection process and importance of navigation lights. This combination helps to deepen students' understanding and memory of knowledge. With the popularization of intelligent inspection technology, relevant personnel need to receive professional training to master the use of new technologies and new equipment. The teaching platform can help students master the use and maintenance skills of intelligent inspection equipment, laying a solid foundation for their future careers. Therefore, it is very necessary to build an intelligent inspection platform for airport navigation lights. Summary of the invention

[0004] In order to solve the technical problems in the above background, the present invention provides an airport navigation lighting intelligent inspection experimental teaching system, including: an intelligent inspection platform and a teaching platform;

[0005] The intelligent inspection platform includes: a conventional navigation light inspection system, a detection unit, an information processing unit and a fault information display unit;

[0006] The conventional navigation light inspection system is connected to the detection unit and the information processing unit respectively, and the conventional navigation light inspection system forms a light circuit to transmit the fault information detected by the detection unit to the information processing unit;

[0007] The detection unit is connected in parallel with the lamp to detect fault information of the lamp during each inspection and transmit the detected data to the power supply line;

[0008] The information processing unit is used to store and organize the fault information detected by the detection unit;

[0009] The fault display unit is used to display the information of the information processing unit in the form of hexadecimal characters, so as to identify the fault type of the lamp and the location of the fault, and send the inspection instruction at the same time;

[0010] The teaching platform is used to set different fault conditions of the lamp, and is also used to inspect a specified lighting circuit composed of a dimmer based on the inspection instruction, so as to accurately identify the fault location and fault type of the lamp.

[0011] Preferably, the conventional navigation light inspection system includes a dimmer, a step-up transformer, an isolation transformer, a light box barrel, a lamp and a power line, which are used to construct a navigation light inspection circuit;

[0012] The dimmer is used to adjust the current in the inspection circuit so that the lamp can be at different brightness levels to adapt to different environmental requirements;

[0013] The step-up transformer is used to convert the input low-voltage power supply into a high-voltage power supply to meet the working requirements of the navigation light, thereby ensuring the brightness and stability of the lamp;

[0014] The isolation transformer is connected in series with the navigation light inspection circuit to prevent the entire circuit from being affected by damage to a single lamp;

[0015] The light box barrel is used to store the isolation transformer, the detection unit and the lamp to prevent the device from being damaged due to external environmental factors. The lamp is installed on the top of the light box barrel.

[0016] Preferably, the dimmer and the information processing unit are powered by independent power supplies; the information display unit includes at least one computer;

[0017] In the navigation light inspection circuit, one lamp is equipped with one isolation transformer and one detection unit; the detection unit is connected in parallel in the circuit consisting of the lamp and the isolation transformer, and is used to detect lamp faults, which include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress into the light box, and oxidation caused by poor lamp connection.

[0018] Preferably, the detection unit identifies three faults of lamp open circuit, lamp short circuit and lamp aging by detecting the current and voltage of the lamp;

[0019] Methods for detecting aging of the isolation transformer include: when the isolation transformer ages, the performance of transmitting current will decrease, resulting in the current value obtained by the secondary circuit being less than the standard value;

[0020] The method for detecting water ingress into a light box includes: measuring with two metal ends of a detection unit, one metal end is grounded, and the other metal end is connected to a resistor. When water enters the bottom of the light box barrel, the two metal ends are connected through water to form a loop, and the voltage across the resistor will be less than the standard value;

[0021] The method for detecting oxidation caused by poor lamp connection includes: obtaining the historical voltage of the lamp through multiple inspections, and when abnormal phenomena appear in the data for multiple times, it is determined that the oxidation problem is caused by poor lamp connection.

[0022] Preferably, the information processing unit includes a sampling module, an information processing module and a receiving module;

[0023] The sampling module is used to construct a voltage environment required for the detection unit and the information processing unit to work;

[0024] The information processing module is used to parse the fault information into an information format that can be recognized by the fault display unit;

[0025] The receiving module is used to receive the inspection instruction from the fault display unit and the fault information processed by the information processing module.

[0026] Preferably, the fault display unit includes an inspection instruction sending module, a fault information display module and a fault location display module;

[0027] The inspection instruction sending module is used to send instructions to the intelligent inspection platform to inspect the lighting circuit controlled by the specified dimmer;

[0028] The fault information display module is used to display the fault information, and the fault information is presented in the form of hexadecimal characters, and each character information corresponds to a lamp fault type;

[0029] The fault location display module is used to accurately locate the faulty lamp and display inspection status information, which includes: inspection time, lamp fault location, lamp fault type, faulty lighting circuit and lamp current and voltage data.

[0030] Preferably, the teaching platform includes a fault setting module and a fault identification and positioning module;

[0031] The fault setting module is used to construct lamp fault scenarios, which include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress to the light box, and oxidation caused by poor lamp connection;

[0032] The lamp fault identification and positioning module is used to accurately identify and locate the faulty lamp through intelligent inspection based on the lamp fault scenario.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention has the advantages of simple operation, low installation cost, comprehensive fault detection and good signal transmission stability. It can quickly and accurately identify lamp faults and locate faulty lamps, which is beneficial to the construction of smart airports. In addition, the present invention can play an advantage in the actual airport navigation light inspection system, has good airport applicability, can greatly promote the efficiency of airport inspections, and reduce the burden rate of airports.

[0035] The present invention builds an intelligent inspection platform, sets up lamp fault scenarios in the inspection platform based on the faults that are prone to occur in lamps during inspections at the current stage, and performs intelligent inspections by issuing inspection instructions on the computer side, and receives the binary characters that arrive to perform fault identification and location. This method solves the problem of rigid thinking caused by the traditional classroom structure, can give full play to students' autonomy and initiative in experimental teaching, and reduces teaching costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 A schematic diagram of the system structure of an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the operation steps of the intelligent inspection platform according to an embodiment of the present invention;

[0039] Figure 3This is a schematic diagram of the structure of an airport navigation lighting system according to an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the principle of detecting water ingress into a light box bucket according to an embodiment of the present invention;

[0041] Figure 5 Schematic diagram of the system information interface display according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Embodiment 1

[0045] like Figure 1 As shown, it is a schematic diagram of the system structure of this embodiment, including: an airport navigation light intelligent inspection experimental teaching system, characterized in that it includes: an intelligent inspection platform and a teaching platform; the intelligent inspection platform includes a conventional navigation light inspection system, a detection unit, an information processing unit and a fault information display unit; the conventional navigation light inspection system is connected to the detection unit and the information processing unit respectively, and the conventional navigation light inspection system is used to transmit the fault information detected by the detection unit to the information processing unit by forming a lighting circuit; the detection unit is connected in parallel with the lamp to detect the fault information of the lamp during each inspection and transmit the detected data to the power supply line; the information processing unit is used to store and organize the fault information detected by the detection unit; the fault display unit is used to display the information of the information processing unit in the form of hexadecimal characters, so as to identify the fault type of the lamp and the location of the fault, and send the inspection instruction at the same time; the teaching platform is used to set different fault conditions of the lamp, and is also used to inspect the specified lighting circuit composed of the dimmer based on the inspection instruction, so as to accurately identify the fault location and fault type of the lamp.

[0046] Conventional navigation light inspection systems include: dimmers, step-up transformers, isolation transformers, light boxes, lamps and power lines, which are used to construct navigation light inspection circuits. The dimmer is used to adjust the current in the inspection circuit so that the lamps can be at different brightness levels to adapt to different environmental requirements; the step-up transformer is used to convert the input low-voltage power supply into a high-voltage power supply to meet the working requirements of the navigation light, thereby ensuring the brightness and stability of the lamps; the isolation transformer is connected in series with the navigation light inspection circuit to prevent the entire circuit from being affected by damage to a single lamp; the light box is used to store the isolation transformer, detection unit and lamps to prevent the device from being damaged by external environmental factors, and the lamps are installed on the top of the light box.

[0047] The dimmer and the information processing unit are both powered by independent power supplies; the voltage connected to the dimmer needs to be processed and connected through a step-up transformer; the information display unit needs to use external equipment, which at least includes a computer.

[0048] The internal facilities of a conventional navigation lighting inspection system are connected in series to form a large loop. In the navigation lighting inspection loop, one lamp is equipped with an isolation transformer and a detection unit. The detection unit is connected in parallel in the loop composed of the lamp and the isolation transformer (forming a small loop) to detect lamp faults. Lamp faults include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress into the light box barrel, and oxidation caused by poor lamp connection.

[0049] The detection unit detects the current and voltage of the lamp to identify the three faults of lamp open circuit, lamp short circuit and lamp aging.

[0050] Specifically, when the lamp is open-circuited, no current will pass through the lamp. At this time, the mutual inductance coil built into the detection unit will not detect the current value at both ends of the lamp, resulting in the current value passing through the lamp being 0. When the lamp is short-circuited, since the resistance of the short-circuit path is very small, there is almost no resistance in the circuit. In fact, there is a "contact resistance" at the short-circuit, which makes the resistance greater than 0 and close to zero when the short-circuit occurs. At this time, the mutual inductance coil built into the detection unit will detect a weak voltage value at both ends of the lamp.

[0051] The principle of detecting the aging of the isolation transformer includes: since the dimmer transmits a constant current to the main circuit through the step-up transformer, the isolation transformer is responsible for transmitting the current to the secondary circuit. Therefore, when the isolation transformer ages, the performance of transmitting current will decrease, resulting in the current value obtained by the secondary circuit being less than the standard value.

[0052] The method for detecting oxidation caused by poor connection of lamps includes: obtaining the historical voltage of lamps through multiple inspections, and when abnormal phenomena appear in the data for multiple times, it is judged that the oxidation problem is caused by poor connection of lamps. Specifically, when poor contact reaction occurs, the number of contact points in the lamps becomes less, that is, the cross-sectional area of ​​the poor contact area becomes smaller, so that the resistance of the lamps becomes larger, and the heat generated in the poor contact area further increases. This phenomenon is more likely to cause oxidation reaction, and the oxides produced by the oxidation reaction will further increase the resistance value, which causes the heat to continue to increase. When this fault cannot be discovered in time, this series of processes will lead to a vicious cycle. The occurrence of oxidation will be affected by weather conditions. In humid weather, the oxidation reaction is more intense, and more oxides are produced, which makes the resistance value larger. In dry weather, less oxides are produced, and the resistance increases less. Therefore, the oxidation problem caused by poor connection of lamps is to observe the voltage data of lamps in a cycle. If the voltage value is unstable in the cycle, it means that the lamp may have this fault.

[0053] All lamp fault detection is realized by the detection unit built into the light box barrel, such as Figure 4 As shown, two metal terminals are set at the bottom of the detection unit, metal terminal 1 is connected to resistor R, and metal terminal 2 is grounded. When water enters the bottom of the light box barrel, the water contacts the two metal terminals at the same time, and the impurities in the water will be ionized into ions, making the water conductive, and the resistor is formed by rainwater. When water enters the light box barrel, the voltage across the resistor R connected to the original metal terminal 1 will be less than the standard value.

[0054] The information processing unit includes a sampling module, an information processing module and a receiving module; wherein the sampling module is used to construct a voltage environment for the detection unit to detect lamp fault information and the information processing module to process the fault information; the information processing module is used to parse the fault information transmitted by the sampling module into an information form that can be recognized by the fault display unit; the receiving module is used to receive inspection instructions from the fault display unit and the fault information processed by the information processing module.

[0055] The fault display unit includes an inspection instruction sending module, a fault information display module and a fault position display module; the inspection instruction sending module is used to send instructions to the intelligent inspection platform to inspect the lighting circuit controlled by the specified dimmer.

[0056] The fault information display module is used to display fault information. The fault information is presented in the form of binary characters, and each character information corresponds to a type of lamp fault. For example, a string of characters "A002305F", "A0" represents the separator number, indicating that the small circuit formed by the lamp is connected normally, "02" represents the lamp number, and "305F" represents the voltage and current of the lamp in the secondary circuit respectively.

[0057] The fault location display module is used to accurately locate the faulty lamp and display the inspection status information, which includes: inspection time, lamp fault location, lamp fault type, faulty lighting circuit and lamp current and voltage data.

[0058] The teaching platform includes a fault setting module and a fault identification and positioning module; the fault setting module is used to construct lamp fault scenarios, which include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress into the light box barrel, and oxidation caused by poor lamp connection; the lamp fault identification and positioning module is used to accurately identify and locate faulty lamps based on lamp fault scenarios through intelligent inspection.

[0059] The airport navigation lighting intelligent inspection experimental platform proposed in this embodiment is derived from the airport's navigation lighting system. It is based on a conventional navigation lighting inspection system composed of a dimmer to form an inspection loop, providing an environmental basis for intelligent inspection. In the original loop, a detection unit and an information processing unit are added. The experimental platform sets up a series of fault problems that are prone to occur in airport lighting. The computer PC issues inspection instructions, the detection unit detects the fault information of the lighting, and the information processing unit processes the information. Finally, it is sent to the computer PC in the form of a binary string. By identifying the binary string and locating the position of the faulty bulb, the type of lighting fault can be quickly and accurately identified, and after the fault position is located, the staff can quickly reach the designated location for repair. In the context of smart airport construction, this experimental teaching platform is demonstrated on the constructed experimental platform in an intelligent way. The experimental results can well solve the above-mentioned problems and provide a good reference for the construction and popularization of intelligent inspection in the future.

[0060] In the context of smart airport construction, this embodiment designs an intelligent inspection experimental teaching platform to address the difficulties of manual inspection at airports, such as time-consuming, laborious, inaccurate and difficult to repair during daily inspections, especially as more and more airports are in non-stop operation and the time left for inspections is getting shorter and shorter. The inspection loop composed of dimmers in the scene lighting system is extracted as the environmental basis for intelligent inspection, and detection units and information processing units are added to achieve the purpose of intelligent inspection. By constructing a simulated environment for the airport scene lighting system and modifying and simplifying the network structure, a plan for building an intelligent inspection experimental teaching platform for airport navigation lights is designed. The plan can meet the main functions required for experimental teaching, and at the same time conforms to the principle of system minimization to save costs.

[0061] Embodiment 2

[0062] like Figure 2 As shown, this embodiment provides the operation steps of the intelligent inspection experiment platform, and the steps include:

[0063] S1 checks whether the intelligent inspection platform is connected correctly according to the requirements, and checks three connection methods: the large loop, the small loop in the light box barrel, and the serial port connection between the information processing unit and the computer PC end, where the computer PC end is the fault information display unit.

[0064] S12. The large loop refers to the dimmer, step-up transformer, and isolation transformer, which are connected in series; the small loop in the light box refers to the isolation transformer, detection unit, and light bulb, which are connected in parallel; after the two loops are connected, it is necessary to ensure good contact between the wiring; when connecting the serial port, check whether the device driver output is consistent.

[0065] S2. Set the lamp fault type. Six problems, including open circuit of bulb, short circuit of bulb, aging of bulb, aging of isolation transformer, water ingress of light box bucket and oxidation caused by poor bulb connection, are randomly set. Each fault type corresponds to different inspection information. The corresponding relationship between different types of faults and the information received by the fault information display unit is shown in Table 1:

[0066] Table 1

[0067]

[0068] S3. The dimmer, information processing unit and PC in the intelligent inspection experiment platform need to be powered independently. The dimmer and information processing unit need to boost the 220V AC to 380V through a step-up transformer, and the PC normally uses 220V AC.

[0069] S31. Turn on the dimmer and adjust the light to the corresponding light level. Each light level corresponds to a different mains current, see Table 2. Since the purpose of this experimental platform is to realize intelligent inspection, in order to prevent the light level from being too high and to protect lamps and other equipment, the dimmer light level is fixed to level 2.

[0070] Table 2

[0071] Light Level Current value (A) 5 6.6±0.1 4 5.2±0.1 3 4.3±0.1 2 3.5±0.1 1 2.8±0.1 . S4. Use the PC to send inspection instructions to the intelligent inspection experiment platform. Once the instructions are sent successfully, the inspection starts normally;

[0072] S41. Inspection instructions are sent by the fault information display unit. This embodiment is implemented by establishing an intelligent inspection platform. In order to simplify the structure diagram of the intelligent inspection platform, Figure 1 Only a lighting circuit controlled by a dimmer is shown. Figure 3 It is a structural diagram for realizing intelligent inspection of the entire airport navigation lighting system.

[0073] S42. The sending command information is presented in the form of a binary string, and its representative meaning is shown in Table 3:

[0074] Table 3

[0075]

[0076] S5. After the inspection command is sent successfully, the status information of each lamp after the inspection will be received in the fault information display module in the fault information display unit. The string information obtained by the intelligent inspection platform of the navigation light is used as an example to explain the fault. The received information is shown in Table 4:

[0077] Table 4

[0078] A0 01 08 5E A0 02 30 5F A0 03 31 5F A0 04 30 5F A0 05 2F 5F A0 06 30 5F A0 07 31 5F A0 08 2E 5E A0 09 32 5E D0 0A F5 5F .

[0079] S51. In Table 4, the voltage value of lamp No. 01 is significantly lower than that of other lamps, and the voltage value is very small, indicating that a short circuit fault occurred in lamp No. 1; the A0 symbol of lamp No. 10 changed to D0, indicating that the secondary circuit connection of lamp No. 10 was abnormal, and the lamp may have an open circuit block.

[0080] S6. After the faulty lamp is identified, the fault position of the lamp needs to be accurately located; the number of the faulty lamp is obtained according to the lamp information received by the fault information display unit.

[0081] S61. Fault location display The fault information analyzed by the fault information module is presented on the display screen; the information presented on the display screen includes inspection time, lamp fault location, lamp fault type, faulty lighting circuit and lamp current and voltage data. The specific display conditions are as follows: Figure 5 shown.

[0082] When all steps are completed, the intelligent inspection is completed.

[0083] The embodiments described above are only descriptions of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An airport navigation lighting intelligent inspection experimental teaching system, characterized in that: include: Intelligent inspection platform and teaching platform; The intelligent inspection platform includes a conventional navigation light inspection system, a detection unit, an information processing unit and a fault information display unit; The conventional navigation light inspection system is connected to the detection unit and the information processing unit respectively, and the conventional navigation light inspection system forms a light circuit to transmit the fault information detected by the detection unit to the information processing unit; The detection unit is connected in parallel with the lamp to detect fault information of the lamp during each inspection and transmit the detected data to the power supply line; The information processing unit is used to store and organize the fault information detected by the detection unit; The fault display unit is used to display the information of the information processing unit in the form of hexadecimal characters, so as to identify the fault type of the lamp and the location of the fault, and send the inspection instruction at the same time; The teaching platform is used to set different fault conditions of the lamp, and is also used to inspect a specified lighting circuit composed of a dimmer based on the inspection instruction, so as to accurately identify the fault location and fault type of the lamp.

2. The airport navigation lighting intelligent inspection experimental teaching system according to claim 1 is characterized in that: The conventional navigation light inspection system comprises: a dimmer, a step-up transformer, an isolation transformer, a light box barrel, a lamp and a power line, which are used to construct a navigation light inspection circuit; The dimmer is used to adjust the current in the inspection circuit so that the lamp can be at different brightness levels to adapt to different environmental requirements; The step-up transformer is used to convert the input low-voltage power supply into a high-voltage power supply to meet the working requirements of the navigation light, thereby ensuring the brightness and stability of the lamp; The isolation transformer is connected in series with the navigation light inspection circuit to prevent the entire circuit from being affected by damage to a single lamp; The light box barrel is used to store the isolation transformer, the detection unit and the lamp to prevent the device from being damaged due to external environmental factors. The lamp is installed on the top of the light box barrel.

3. The airport navigation lighting intelligent inspection experimental teaching system according to claim 2 is characterized in that: The dimmer and the information processing unit are both powered by independent power supplies; the information display unit includes at least one computer; In the navigation light inspection circuit, one lamp is equipped with one isolation transformer and one detection unit; The detection unit is connected in parallel in a loop consisting of the lamp and the isolation transformer, and is used to detect lamp faults, which include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress into the light box, and oxidation caused by poor lamp connection.

4. The airport navigation lighting intelligent inspection experimental teaching system according to claim 3 is characterized in that: The detection unit detects the current and voltage of the lamp to identify the three faults of lamp open circuit, lamp short circuit and lamp aging; Methods for detecting aging of the isolation transformer include: when the isolation transformer ages, the performance of transmitting current will decrease, resulting in the current value obtained by the secondary circuit being less than the standard value; The method for detecting water ingress into a light box includes: measuring with two metal ends of a detection unit, one metal end is grounded, and the other metal end is connected to a resistor. When water enters the bottom of the light box barrel, the two metal ends are connected through water to form a loop, and the voltage across the resistor will be less than the standard value; The method for detecting oxidation caused by poor lamp connection includes: obtaining the historical voltage of the lamp through multiple inspections, and when abnormal phenomena appear in the data for multiple times, it is determined that the oxidation problem is caused by poor lamp connection.

5. The airport navigation lighting intelligent inspection experimental teaching system according to claim 4 is characterized in that: The information processing unit includes a sampling module, an information processing module and a receiving module; The sampling module is used to construct a voltage environment required for the detection unit and the information processing unit to work; The information processing module is used to parse the fault information into an information format that can be recognized by the fault display unit; The receiving module is used to receive the inspection instruction from the fault display unit and the fault information processed by the information processing module.

6. The airport navigation lighting intelligent inspection experimental teaching system according to claim 5 is characterized in that: The fault display unit includes an inspection instruction sending module, a fault information display module and a fault location display module; The inspection instruction sending module is used to send instructions to the intelligent inspection platform to inspect the lighting circuit controlled by the specified dimmer; The fault information display module is used to display the fault information, and the fault information is presented in the form of hexadecimal characters, and each character information corresponds to a lamp fault type; The fault location display module is used to accurately locate the faulty lamp and display inspection status information, which includes: inspection time, lamp fault location, lamp fault type, faulty lighting circuit and lamp current and voltage data.

7. The airport navigation lighting intelligent inspection experimental teaching system according to claim 1 is characterized in that: The teaching platform includes a fault setting module and a fault identification and positioning module; The fault setting module is used to construct lamp fault scenarios, which include: lamp open circuit, lamp short circuit, lamp aging, isolation transformer aging, water ingress to the light box, and oxidation caused by poor lamp connection; The lamp fault identification and positioning module is used to accurately identify and locate the faulty lamp through intelligent inspection based on the lamp fault scenario.

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