Method and system for controlling and monitoring landing light based on CAN bus

Abstract

The invention relates to the technical field of bus control, in particular to a method and system for controlling and monitoring landing light based on a CAN bus. The method comprises the following steps: setting a light control node in an aircraft landing light system, and performing control network connection and landing light local response control on the light control node and a central control unit by using a CAN bus protocol to generate a landing light local response control instruction; starting corresponding landing light in an aircraft landing light system according to the landing light local response control instruction, performing light condition real-time monitoring and judgment analysis, and if the landing light is determined to be in an on-light state, performing brightness non-uniformity control management so as to execute on-state brightness non-uniformity control work; and if it is determined that the landing light working state is a closed state, light operation fault control management is carried out to execute closed state fault adjustment control work. The intelligent level of the landing light control system can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bus control, and in particular to a method and system for controlling and monitoring landing lights based on a CAN bus. Background Art

[0002] Modern aircraft are increasingly dependent on ground marking lights during landing. The landing lighting system plays an important role in ensuring flight safety, improving flight efficiency and visibility. Landing lights are usually used to indicate the position, direction, heading of the runway and landing instructions at different stages, especially at night or in low visibility conditions, to provide important visual information to pilots. Control and monitoring technology based on the controller area network (CAN) bus has gradually been applied to the aviation field. As an efficient and reliable communication protocol, the CAN bus has the advantages of high anti-interference ability, real-time data transmission and strong system scalability. It can realize efficient communication of multiple control nodes, connect various lighting modules, sensors and controllers through the bus, and provide a unified control and monitoring platform. However, the existing landing lighting system usually relies on point-to-point hard-wired control mode, with poor system scalability, and cannot easily increase the number of lights or control landing lights with uneven brightness, which leads to the inability to detect lighting failure problems in a timely and accurate manner. Summary of the invention

[0003] Based on this, it is necessary for the present invention to provide a method and system for controlling and monitoring landing lights based on a CAN bus to solve at least one of the above technical problems.

[0004] To achieve the above object, a method for controlling and monitoring landing lights based on a CAN bus comprises the following steps: Step S1: A lighting control node is established in the aircraft landing lighting system and the lighting control node is connected to the central control unit through a control network using the CAN bus protocol to generate a landing lighting CAN bus control network; the central control unit in the landing lighting CAN bus control network obtains ground receiving landing instructions and aircraft landing environment data, and performs landing lighting local response control on the lighting control node in the landing lighting CAN bus control network based on the ground receiving landing instructions and aircraft landing environment data to generate a landing lighting local response control instruction; Step S2: starting the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and using the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, obtaining a real-time monitoring data set of the landing light feedback status, including the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and uploading it to the central control unit in the landing light CAN bus control network; Step S3: using the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the on state, then based on the landing light brightness distribution and using the landing light CAN bus control network, the corresponding landing light is controlled for uneven brightness, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; Step S4: If it is determined that the landing light working state is off, then based on the landing light current and the landing light voltage and using the landing light CAN bus control network, the corresponding landing light is controlled for light operation fault management, and a landing light operation fault control management instruction is generated to execute the corresponding landing light off state fault adjustment control work.

[0005] Further, step S1 includes the following steps: Step S11: by setting up a lighting control node in the aircraft landing lighting system, wherein each lighting control node controls a corresponding set of landing lights in the aircraft landing lighting system; Step S12: acquiring the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, and based on the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, using the embedded control algorithm to perform intelligent programming control on the lighting control node to generate an aircraft landing adaptive lighting control logic node; Step S13: using the CAN bus protocol to connect each aircraft landing adaptive light control logic node with the central control unit through a CAN bus control network to generate a landing light CAN bus control network; Step S14: obtaining the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network; Step S15: Based on the landing instruction received on the ground and the aircraft landing environment data, the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network is subjected to local response control of the landing lighting to generate a landing lighting local response control instruction.

[0006] Further, step S15 includes the following steps: Step S151: receiving a landing instruction from the ground to obtain the corresponding aircraft landing process, and performing a communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network and the ground based on the aircraft landing process, so as to generate a lighting control communication delay between the lighting control node and the ground; Step S152: Acquire landing light adjustment requirements, including adjustment requirements for light brightness, color, and flashing frequency when the aircraft lands; Step S153: Obtain the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position through the aircraft landing environment data, and perform local environment adaptation evaluation calculation on the corresponding aircraft landing adaptive light control logic node in the landing light CAN bus control network using the landing light local environment adaptation calculation formula based on the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position and the light control communication delay between the light control node and the ground, so as to obtain the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position; Among them, the calculation formula for the local environment adaptation of the landing light is as follows: ; In the formula, For lighting control nodes in distribution position The corresponding landing light local environment adaptation coefficient is: is the horizontal coordinate of the distribution position, is the ordinate of the distribution position, is the vertical coordinate of the distribution position, is the light control communication delay between the light control node and the ground, is the time variable parameter, The total number of landing lights in the light control node. For the lighting control node Landing lights are distributed in and time The corresponding light brightness intensity level is For lighting control nodes in distribution position and time The corresponding average brightness intensity level is For lighting control nodes in distribution position and time The corresponding external environment weather change measurement is: is an exponential function, For the A sensitivity factor of the landing lights to external aerial obstacles, For lighting control nodes in distribution position and time The corresponding external air obstacle distribution distance is: It is the correction factor of the local environment adaptation factor of the landing light; Step S154: Based on the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position, the corresponding aircraft landing adaptive light control logic node is subjected to local response control of the landing light, and a landing light local response control instruction is generated.

[0007] Further, the step S151 of performing communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network and the ground based on the aircraft landing process includes the following steps: Perform light node response monitoring on the communication process between the aircraft landing adaptive light control logic node and the ground in the landing light CAN bus control network to obtain the communication response time of the landing light control node; Obtain the aircraft's current landing speed and landing direction through the aircraft's landing process; Based on the current landing speed and landing direction of the aircraft, the communication delay response analysis of the landing light control node communication response time is performed to generate the light control communication delay between the light control node and the ground.

[0008] Further, step S2 includes the following steps: Step S21: starting the landing lights of the corresponding local area in the aircraft landing light system through the light control node according to the landing light local response control instruction, and using the working state sensor monitoring sub-block embedded in the light control node to monitor the working state of the corresponding landing lights in real time, so as to obtain the working state of the landing lights, including the on state and the off state; Step S22: using the brightness sensor monitoring sub-block embedded in the light control node to monitor the brightness distribution of the corresponding landing light in real time, so as to obtain the brightness distribution of the landing light; Step S23: using the current sensing monitoring sub-block embedded in the light control node to monitor the light current of the corresponding landing light in real time to obtain the landing light current; Step S24: using the voltage sensing monitoring sub-block embedded in the light control node to monitor the light voltage of the corresponding landing light in real time to obtain the landing light voltage; Step S25: Upload the landing light working status, landing light brightness distribution, landing light current and landing light voltage to the central control unit in the landing light CAN bus control network.

[0009] Further, step S3 includes the following steps: Step S31: using the central control unit to judge and analyze the working state of the landing light, if it is determined that the working state of the landing light is the on state, then obtaining the landing light brightness distribution corresponding to the spatial area of ​​the on state of the landing light; Step S32: performing brightness unevenness evaluation calculation on the corresponding landing lights based on the brightness distribution of the landing lights corresponding to the lighting state space area, so as to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the lighting state space area; Step S33: comparing and judging the brightness unevenness evaluation values ​​corresponding to the various landing lights in the lighting state space area according to the preset brightness unevenness threshold value; if the brightness unevenness evaluation value is greater than or equal to the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness uneven; if the brightness unevenness evaluation value is less than the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness balanced; Step S34: using the landing light CAN bus control network to perform brightness uneven response control on the landing lights in the lighting state space area that are determined to correspond to uneven brightness, so as to generate a landing light brightness uneven control management instruction; Step S35: Apply the landing light brightness uneven control management instruction to the corresponding light control node to perform fine-grained brightness correction management on the corresponding landing lights in the light-on state space area, so as to execute the corresponding landing light brightness uneven control work.

[0010] Further, step S32 includes the following steps: Step S321: constructing a light brightness field for the landing light brightness distribution corresponding to the light-on state space area to generate a landing light brightness distribution field in the light-on area; Step S322: obtaining the spatial layout distribution position and light projection angle corresponding to each landing light through the landing light brightness distribution field of the light-on area, and performing light brightness difference analysis between corresponding landing lights in the landing light brightness distribution field of the light-on area based on the spatial layout distribution position corresponding to each landing light, so as to obtain the light brightness distribution difference corresponding to each landing light; Step S323: Based on the light projection angles corresponding to each landing light and the light brightness distribution differences, a light brightness unevenness evaluation calculation formula is used to perform brightness unevenness evaluation calculations on the corresponding landing lights in the light-on state space area to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the light-on state space area.

[0011] Furthermore, the calculation formula for evaluating the unevenness of light brightness in step S323 is specifically: ; In the formula, is the first The brightness unevenness evaluation value corresponding to the landing lights, is the total number of landing lights, is the area of ​​the space in the light-on state, is the first The light projection angle corresponding to the landing light, is the first The horizontal angle corresponding to the landing light, is the first The distance between the landing light source and the target area. is the corresponding landing light brightness distribution at a given angle and distance, is the average brightness corresponding to the lighting state space area, is the first The difference in light brightness distribution corresponding to the landing lights, It is the correction factor of the brightness unevenness evaluation value.

[0012] Further, step S4 includes the following steps: Step S41: if it is determined that the landing light working state is the off state, then performing a light signal fluctuation frequency domain conversion on the landing light current and the landing light voltage to generate a landing light current signal distribution waveform and a landing light voltage signal distribution waveform; Step S42: Obtaining a corresponding landing light resistance according to the landing light current and the landing light voltage, and calculating a light circuit power loss of the corresponding landing light based on the landing light current and the landing light resistance to obtain a landing light circuit power loss; Step S43: performing time-series synchronous change trend analysis on the landing light current signal distribution waveform, the landing light voltage signal distribution waveform and the landing light circuit power loss to obtain the landing light current change trend, the landing light voltage change trend and the landing light power loss change trend; Step S44: based on the change trend of the landing light current, the change trend of the landing light voltage and the change trend of the landing light power loss, a fault identification and judgment analysis is performed on the corresponding landing light in the off state. If the change trend of the landing light current is decreasing, the change trend of the landing light voltage is increasing and the change trend of the landing light power loss is locally increasing, then it is determined that the corresponding landing light is a poor contact fault; if the change trend of the landing light current is rapidly increasing, the change trend of the landing light voltage is suddenly decreasing and the change trend of the landing light power loss is sharply increasing, then it is determined that the corresponding landing light is a short circuit fault; if the change trend of the landing light current is gradually increasing, the change trend of the landing light voltage is slightly decreasing and the change trend of the landing light power loss is gradually increasing, then it is determined that the corresponding landing light is an overload fault; if the change trend of the landing light current is rapidly decreasing to zero, the change trend of the landing light voltage is temporarily unstable and the change trend of the landing light power loss is rapidly decreasing to zero, then it is determined that the corresponding landing light is a circuit breaker fault; Step S45: Use the corresponding lighting control nodes in the landing lighting CAN bus control network to perform lighting operation fault control management on the corresponding landing lighting with poor contact, short circuit, overload and open circuit faults, and generate landing lighting operation fault control management instructions to execute the corresponding landing lighting off state fault adjustment control work.

[0013] Furthermore, the present invention also provides a system for controlling and monitoring landing lights based on a CAN bus, which is used to execute the method for controlling and monitoring landing lights based on a CAN bus as described above. The system for controlling and monitoring landing lights based on a CAN bus comprises: The landing light local control response module is used to establish a light control node in the aircraft landing light system and connect the light control node to the central control unit through a control network using the CAN bus protocol to generate a landing light CAN bus control network; obtain the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network, and perform landing light local response control on the light control node in the landing light CAN bus control network based on the ground receiving landing instruction and the aircraft landing environment data, thereby generating a landing light local response control instruction; The landing light response status real-time monitoring module is used to start the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and use the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, and obtain the landing light feedback status real-time monitoring data set, which includes the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and upload it to the central control unit in the landing light CAN bus control network; The lighting state uneven brightness control management module is used to use the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the lighting state, the corresponding landing light is controlled and managed based on the landing light brightness distribution and using the landing light CAN bus control network, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; The off-state operation fault control management module is used to perform light operation fault control management on the corresponding landing light based on the landing light current and the landing light voltage and using the landing light CAN bus control network if it is determined that the landing light working state is the off state, and generate a landing light operation fault control management instruction to execute the corresponding landing light off-state fault adjustment control work.

[0014] Beneficial effects of the present invention: 1. The method for controlling and monitoring landing lights based on CAN bus proposed in the present invention has the beneficial effect of forming a highly integrated landing light CAN bus control network by establishing a light control node in the aircraft landing light system and connecting the light control node with the central control unit using the CAN bus protocol. The greatest advantage of this network architecture is its efficient distributed control capability, which enables multiple light control nodes to respond to instructions from the central control unit in real time, realize accurate control of the light system, and conveniently increase the number of landing lights. By integrating the landing instructions received from the ground and the aircraft landing environment data, the central control unit can obtain flight status information in real time and accurately judge the landing conditions. This precise data flow enables the landing light control system to be dynamically adjusted according to the real-time flight status, thereby providing highly adaptable landing light support. Based on these instructions, the light control node can accurately adjust the working state and response level of each light, provide clear and stable visual guidance for the pilot, and ensure safe landing. This networked control system can significantly improve the response speed, reliability and operational flexibility of the light system, which is unmatched by the traditional landing light control system. Secondly, through the sensor module embedded in the lighting control node, the key parameters such as the working status, brightness distribution, current and voltage of the landing lights can be monitored and fed back in real time. The introduction of this real-time monitoring function provides an important guarantee for the stability and reliability of the entire landing lighting system. When executing local response control instructions, the lighting control node can not only start the specified landing lights, but also synchronously monitor the operating status of the lights during the execution process. Through the feedback of the sensor module, the central control unit can obtain real-time feedback on light brightness, current, voltage and other data, and provide data support for subsequent fault diagnosis, maintenance and adjustment. If there are problems such as uneven brightness and abnormal circuit faults, it can respond immediately and issue corresponding adjustment instructions. Real-time monitoring of lights not only enhances the maintainability of the lighting control system, but also improves its adaptability to changes in the external environment during flight missions. Especially in complex flight and weather environments, the lighting system can quickly adjust and provide stable landing support, thereby greatly improving flight safety.Then, by accurately judging the working status of the landing lights and controlling and managing the uneven brightness, the central control unit can judge the working status of the landing lights and promptly identify whether there is a problem of uneven brightness distribution of the lights. Once uneven brightness is found, corresponding control instructions can be issued through the CAN bus network to ensure that the brightness distribution of each light remains consistent, preventing the pilot's landing vision from being affected by insufficient brightness of a certain light. For pilots, the brightness uniformity of the landing lights is very important, which directly affects the pilot's judgment and landing safety. Through this step, blind spots caused by uneven lighting during flight can be effectively avoided, ensuring that the guiding effect of the lights remains stable throughout the flight, especially at night or in low visibility environments. Uneven light brightness will pose a great risk to the pilot's judgment, and the control and management of this step can minimize this risk, thereby better controlling landing lights with uneven brightness. Finally, by monitoring the working status of the landing lights, it is possible to detect faults in the operation of the lights in real time and perform fault adjustment control when the lights should be turned on but are turned off due to a fault. The introduction of this step enables the system to have the ability of self-diagnosis and fault recovery. Once the system detects that the light current or voltage is abnormal, it can issue adjustment instructions based on the fault type and perform appropriate fault management on the lights. This real-time fault detection and response mechanism greatly improves the reliability of the landing lighting system. Especially in complex flight missions or extreme weather conditions, rapid fault detection and repair are crucial to ensuring safe landing. In this way, the lighting fault status can be adjusted automatically to avoid delays caused by human operations, and backup lighting guidance can still be provided in the event of a fault, ensuring that the pilot can successfully complete the landing operation, avoiding excessive inspection and blind replacement in the traditional maintenance mode, so that lighting fault problems can be discovered in a timely and accurate manner, making the landing lighting control system more intelligent and automated, greatly enhancing the safety and maintainability of the system.

[0015] 2. The system for controlling and monitoring landing lights based on the CAN bus proposed in the present invention is generally composed of a landing light local control response module, a landing light response status real-time monitoring module, a lighting-on state brightness unevenness control management module, and a lighting-off state operation fault control management module. It can implement any of the methods for controlling and monitoring landing lights based on the CAN bus described in the present invention, and is used to combine the operations between the computer programs running on each module to implement the method for controlling and monitoring landing lights based on the CAN bus. The internal structures of the system cooperate with each other, which can greatly reduce duplication of work and manpower investment, and can quickly and effectively provide a more accurate and efficient process for controlling and monitoring landing lights based on the CAN bus, thereby simplifying the operation flow of the system for controlling and monitoring landing lights based on the CAN bus. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments thereof made with reference to the following drawings: Figure 1 The figure is a schematic flow chart of the steps of the method for controlling and monitoring landing lights based on the CAN bus of the present invention; Figure 2 for Figure 1 Detailed step flow chart of step S1 in FIG. DETAILED DESCRIPTION

[0017] The technical method of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the present invention.

[0018] To achieve this, please refer to Figure 1 to Figure 2 The present invention provides a method for controlling and monitoring landing lights based on a CAN bus. In the embodiments of the present invention, please refer to Figure 1 FIG. 1 is a schematic diagram of a step flow chart of a method for controlling and monitoring landing lights based on a CAN bus according to the present invention. In this example, the method for controlling and monitoring landing lights based on a CAN bus includes the following steps: Step S1: A lighting control node is established in the aircraft landing lighting system and the lighting control node is connected to the central control unit through a control network using the CAN bus protocol to generate a landing lighting CAN bus control network; the central control unit in the landing lighting CAN bus control network obtains ground receiving landing instructions and aircraft landing environment data, and performs landing lighting local response control on the lighting control node in the landing lighting CAN bus control network based on the ground receiving landing instructions and aircraft landing environment data to generate a landing lighting local response control instruction; In an embodiment of the present invention, a lighting control node is established in the aircraft landing lighting system, each lighting control node is responsible for controlling the landing lighting system of a specific area, usually a group of lights, including runway edge lights, approach lights, etc., and each lighting control node is connected to the central control unit through the CAN bus protocol to establish an efficient data communication network. The CAN bus protocol is a multi-host, anti-interference communication protocol, which is suitable for use in aircraft systems that have extremely high requirements for safety and real-time performance. In this step, each lighting control node is connected to the central control unit through the CAN bus. The central control unit is responsible for coordinating the communication between the nodes to ensure that all subsystems of the lighting system can correctly receive control commands. The CAN bus protocol can effectively reduce communication delays and improve the stability of data transmission. Through the CAN bus, the central control unit can transmit flight parameters, environmental data and control instructions to each lighting node in real time to ensure accurate adjustment of the landing lighting system, thereby connecting and generating a landing lighting CAN bus control network. The control of landing lights not only depends on the real-time flight parameters during the flight, but also needs to be adjusted according to the instructions of the ground control system and environmental data. In this step, the ground control system transmits the landing instructions to the aircraft through wireless communication or other data transmission methods. The landing instructions include channel adjustment, lighting requirements, etc. According to the current landing position, speed and predetermined landing mode of the aircraft, the ground control unit can generate lighting adjustment requirements according to these instructions. At the same time, the aircraft's sensors (such as wind speed sensors, runway condition sensors, etc.) provide real-time environmental data. The central control unit receives this data through the CAN bus, comprehensively considers the flight parameters and environmental data to adjust the lighting system, and adjusts the lighting system according to the landing instructions received from the ground and the aircraft The central control unit further analyzes and generates the lighting control logic based on the environmental data of the flight. Specifically, based on the current flight status (such as flight altitude and speed) and environmental data (such as weather conditions and runway surface conditions), the central control unit decides whether it is necessary to perform local response control on the landing lights. For example, when the aircraft enters a specific landing phase and the visibility is low or the weather is bad, the system will increase the brightness of lights in certain areas to ensure the visual guidance of the pilot. The local response control instructions of the landing lights will be sent to each lighting control node through the CAN bus network. The nodes adjust the lighting status of the area according to these instructions to ensure that the lighting system adapts to the changes in the actual environment, and finally generate the local response control instructions for the landing lights.

[0019] Step S2: starting the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and using the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, obtaining a real-time monitoring data set of the landing light feedback status, including the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and uploading it to the central control unit in the landing light CAN bus control network; In the embodiment of the present invention, the lighting control node starts the landing lights of the corresponding local area in the aircraft landing lighting system by receiving the local response control instruction of the landing lights, and monitors the switch status of each landing light in real time by using the working status sensor monitoring sub-block embedded in the lighting control node. In this process, the light on state is "1", indicating that the light is on; the off state is "0", indicating that the light is off, thereby obtaining the working status of the landing light. The brightness sensor monitoring sub-block embedded in the lighting control node is responsible for real-time monitoring of the brightness distribution of the corresponding landing light. The sensor sub-block measures the brightness of the light in the specified area through a photoelectric sensor, and transmits the detected brightness data to the lighting control node, accurately calculates the brightness distribution of each light, thereby obtaining the brightness distribution of the landing light. At the same time, the current sensor is integrated in the current sensor monitoring sub-block in the lighting control node to monitor the current state of each landing light in real time, and the current value provided by each current sensor is fed back to the lighting control node in real time, thereby obtaining the landing light current. The voltage sensing monitoring sub-block is also responsible for real-time monitoring of the landing light voltage in the lighting control node. The sub-block obtains voltage data through the voltage sensor connected to the lighting circuit and transmits it to the lighting control node. The sensor can accurately sense the voltage level of each landing light, thereby obtaining the landing light voltage. Then, the working status, brightness distribution, current and voltage data of the landing light obtained by real-time monitoring are uploaded to the CAN bus control network of the landing light in real time. The lighting control node transmits the collected monitoring data to the central control unit through the built-in communication module. The data transmission adopts the standardized CAN bus protocol to ensure efficient data transmission and accuracy.

[0020] Step S3: using the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the on state, then based on the landing light brightness distribution and using the landing light CAN bus control network, the corresponding landing light is controlled for uneven brightness, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; In an embodiment of the present invention, the working state of the landing light system is obtained by the central control unit, and in particular, the on / off state of each group of lights is analyzed. Specifically, the central control unit obtains the working data of the light module through the CAN bus connected to the landing light control system. If it is detected that the landing light is in the on state, the control unit further determines the spatial area of ​​the on state, and collects and obtains the brightness distribution of the landing light in this spatial area. Based on the previously obtained landing light brightness distribution data, the brightness unevenness of the corresponding landing light is evaluated and calculated. The specific method is to first perform statistical analysis on the brightness data in the spatial area where each turned-on landing light is located, calculate the brightness value of each landing light in the area, and compare it with the ideal brightness distribution to evaluate the brightness unevenness of each light. This brightness unevenness value reflects the degree of brightness difference of a certain light relative to other lights, and compare the brightness unevenness evaluation values ​​of all lights according to a preset brightness unevenness threshold. The system compares and determines which lights have brightness unevenness greater than or equal to a preset brightness unevenness threshold. If the brightness unevenness evaluation value of a landing light reaches or exceeds the preset threshold, the light is identified as having uneven brightness, and the spatial area corresponding to the light is used as the target area that needs to be adjusted. If the brightness unevenness evaluation value of a light is lower than the preset brightness threshold, the light is considered to have balanced brightness, and the system does not perform further processing. At the same time, the CAN bus control network is used to control the identified landing lights with uneven brightness in response to uneven brightness. Specifically, when a landing light is judged to have uneven brightness, the system generates a brightness unevenness control management instruction, which includes the light identification that needs to be adjusted, the target brightness value for adjustment, and the method for executing the adjustment. The control instruction is transmitted to each light control node through the CAN bus, and the brightness of the light is adjusted through the control unit on the node, so that the light with uneven brightness is as close to the brightness level of the surrounding lights as possible, thereby responding to the generation of the landing light brightness unevenness control management instruction. The lighting control node that receives the uneven brightness control management instruction will make fine-grained brightness corrections to the corresponding landing lights based on the instruction. The specific operation is that after receiving the instruction, the lighting control node first reads the current brightness value of each landing light, and then adjusts the brightness of the light according to the target brightness value in the instruction through the dimming module inside the control node. The adjustment process can be carried out by changing the current intensity of the light, adjusting the luminous intensity of the light, or through PWM (pulse width modulation) control. Each control node will make fine-grained corrections according to different needs to ensure that after the adjustment, the brightness of the light reaches the predetermined target value and is as consistent as possible with the brightness of the surrounding lights, thereby eliminating the uneven brightness phenomenon and ultimately achieving the goal of balanced brightness.

[0021] Step S4: If it is determined that the landing light working state is off, then based on the landing light current and the landing light voltage and using the landing light CAN bus control network, the corresponding landing light is controlled for light operation fault management, and a landing light operation fault control management instruction is generated to execute the corresponding landing light off state fault adjustment control work.

[0022] In the embodiment of the present invention, it is determined that the working state of the landing light is off by judging. This operation is to read the state of the landing light control system to confirm whether the landing light, which should be on, is in off mode. Once confirmed, the corresponding landing light current and voltage signals are then converted into the frequency domain to obtain the landing light current signal distribution waveform and the voltage signal distribution waveform, and the landing light resistance is calculated based on the collected current signal and voltage signal. This calculation is achieved through Ohm's law, that is, using the resistance formula R=V / I, where R is the landing light resistance, V is the voltage, and I is the current. According to the real-time data of the landing light current and voltage signals, the automatic calculation of the formula can be achieved in the software. Specifically, the current and voltage signals are first divided into time windows, and a suitable time interval is selected for data calculation. The current and voltage values ​​at each time point are obtained in real time, and the resistance value at each time point is calculated. On this basis, the landing light current and resistance value are used to further calculate the power loss of the lighting circuit. The power loss can be calculated by the formula P=I^2xR, where P is the power loss. The corresponding power loss value at each time point is obtained, and the current signal distribution waveform, voltage signal distribution waveform and power loss signal of the landing light obtained by the previous analysis are subjected to time-series synchronous change trend analysis. First, it is necessary to ensure that the current signal, voltage signal and power loss data are aligned on the time axis in order to perform multi-dimensional change trend analysis. This step is achieved by using high-precision clock synchronization technology during data acquisition to ensure that the timestamp of each signal is consistent. Next, data processing software (such as MATLAB or SciPy library in Python) is used to perform trend analysis on the time series data of each signal to identify the change characteristics of current, voltage and power loss over a period of time. At the same time, according to the current change trend, voltage change trend and power loss change trend, the corresponding landing light in the closed state is fault identified and judged. According to the previous trend analysis results, the rule judgment method is used to classify different fault types. For example, firstly, we conduct comparative analysis on the changing trends of the current, voltage and power loss of each light: if the current trend is decreasing, the voltage trend is increasing, and the power loss trend is locally increasing, it can be determined as a poor contact fault; if the current increases sharply, the voltage drops sharply, and the power loss increases sharply, it is a short circuit fault; if the current increases gradually, the voltage drops slightly, and the power loss increases gradually, it should be an overload fault; if the current drops rapidly to zero, the voltage becomes temporarily unstable and the power loss drops rapidly to zero, it can be determined as a circuit breaker fault, ensuring that potential landing light fault types can be discovered and handled in a timely manner.Then, based on the landing light fault identification result, the CAN bus control network is used to communicate with the light control node to perform the corresponding fault control management operation. First, as a high-speed and reliable communication method, the CAN bus control network can transmit fault information in real time. Through the CAN protocol, the fault type (poor contact, short circuit, overload or open circuit) and its specific parameters can be transmitted to the corresponding control node. The control node generates the corresponding landing light operation fault control management instructions based on the received fault information, such as turning off the fault light, restarting the light circuit or switching the backup circuit, etc. The fault adjustment instruction will be sent back to the corresponding light control module through the CAN bus to execute the fault control task. Each light control node should have the ability to handle fault management and be able to respond quickly according to the control instruction. The processing time and response speed of the fault management instruction should meet the aviation or other high reliability requirements to ensure the normal operation of the landing light system, and make necessary adjustments and repairs in time, and finally perform the corresponding landing light off state fault adjustment control work.

[0023] Further, as an embodiment of the present invention, refer to Figure 2 As shown, Figure 1 Detailed step flow diagram of step S1 in FIG. 1 , in this embodiment, step S1 includes the following steps: Step S11: by setting up a lighting control node in the aircraft landing lighting system, wherein each lighting control node controls a corresponding set of landing lights in the aircraft landing lighting system; In the embodiment of the present invention, the establishment of a lighting control node in the aircraft landing lighting system is the basis for realizing intelligent control. Each lighting control node is responsible for controlling the landing lighting system of a specific area, which is usually a group of lights, including runway edge lights, approach lights, etc. In order to ensure the precise control of the lights, it is necessary to use an embedded controller connected to each lighting node. The controller has the ability of real-time response and automatic adjustment. The controller in each node can obtain and process control signals, including light brightness, switch status and fault detection, by connecting to the lighting hardware interface. The embedded controller of each node is usually integrated in the lighting circuit board and communicates with other nodes through electrical connections to ensure the coordinated operation of the entire landing lighting system and realize precise control and management of each light.

[0024] Step S12: acquiring the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, and based on the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, using the embedded control algorithm to perform intelligent programming control on the lighting control node to generate an aircraft landing adaptive lighting control logic node; In the embodiment of the present invention, by acquiring the real-time flight parameters and lighting demand information of the aircraft landing, a data interaction mechanism between the aircraft navigation system and the landing lighting control node is adopted. Specifically, the flight control system of the aircraft acquires the flight parameters in the landing process in real time through the flight sensors of the aircraft (such as altitude sensor, speed sensor, heading sensor, etc.), and these parameters include information such as the altitude, speed, angle, etc. of the aircraft. At the same time, the flight control system calculates the demand for the landing lighting system based on the current flight status, such as whether it is necessary to brighten the lights, change the color of the lights, or turn on the lights in a specific area. Based on these real-time parameters and requirements, an embedded control algorithm (such as fuzzy control algorithm, PID control algorithm, etc.) is used to intelligently program and control the lighting control node. The algorithm dynamically adjusts the operation logic of the lights according to the flight parameters and lighting requirements, and generates an adaptive landing lighting control logic node. The embedded control algorithm needs to have fast calculation and real-time response capabilities to ensure that the lighting system can respond in time during the aircraft landing process, and finally generates an aircraft landing adaptive lighting control logic node.

[0025] Step S13: using the CAN bus protocol to connect each aircraft landing adaptive light control logic node with the central control unit via a CAN bus control network to generate a landing light CAN bus control network; In an embodiment of the present invention, an efficient data communication network is established by connecting each aircraft landing adaptive lighting control logic node with the central control unit through the CAN bus protocol. The CAN bus protocol is a multi-host, anti-interference communication protocol, which is suitable for use in aircraft systems that have extremely high requirements for safety and real-time performance. In this step, each lighting control node is connected to the central control unit through the CAN bus. The central control unit is responsible for coordinating the communication between the nodes to ensure that all subsystems of the lighting system can correctly receive control commands. The CAN bus protocol can effectively reduce communication delays and improve the stability of data transmission. Through the CAN bus, the central control unit can transmit flight parameters, environmental data and control instructions to each lighting node in real time to ensure accurate adjustment of the landing lighting system, and finally connect to generate a landing lighting CAN bus control network.

[0026] Step S14: obtaining the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network; In an embodiment of the present invention, the control of the landing lights not only depends on the real-time flight parameters during the flight, but also needs to be adjusted according to the instructions and environmental data of the ground control system. In this step, the ground control system transmits the landing instructions to the aircraft through wireless communication or other data transmission methods. The landing instructions include channel adjustment, lighting requirements, etc. According to the current landing position, speed and predetermined landing mode of the aircraft, the ground control unit can generate lighting adjustment requirements according to these instructions. At the same time, the sensors of the aircraft (such as wind speed sensors, runway condition sensors, etc.) provide real-time environmental data. The central control unit receives these data through the CAN bus, and adjusts the lighting system by comprehensively considering the flight parameters and environmental data. The central control unit uses the instructions and data received by the CAN bus network to analyze and formulate corresponding lighting response strategies, control the corresponding lighting nodes to turn on, turn off or adjust the brightness, etc., and finally obtain the ground-received landing instructions and aircraft landing environment data.

[0027] Step S15: Based on the landing instruction received on the ground and the aircraft landing environment data, the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network is subjected to local response control of the landing lighting to generate a landing lighting local response control instruction.

[0028] In an embodiment of the present invention, the central control unit further analyzes and generates the lighting control logic according to the landing instructions received from the ground and the environmental data of the aircraft. Specifically, based on the current flight status (such as flight altitude, speed) and environmental data (such as weather conditions, runway surface conditions, etc.), the central control unit determines whether it is necessary to perform local response control on the landing lights. For example, when the aircraft enters a specific landing phase and under low visibility or severe weather conditions, the system will increase the brightness of lights in certain areas to ensure the visual guidance of the pilot. The local response control instructions of the landing lights will be sent to each lighting control node through the CAN bus network. The nodes adjust the lighting status of the area according to these instructions. These control instructions are not limited to changes in brightness, but also involve controls such as switching lights on and off, color changes, etc., to ensure that the lighting system adapts to changes in the actual environment and improve landing safety, and finally generate local response control instructions for landing lights.

[0029] Further, step S15 includes the following steps: Step S151: receiving a landing instruction from the ground to obtain the corresponding aircraft landing process, and performing a communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network and the ground based on the aircraft landing process, so as to generate a lighting control communication delay between the lighting control node and the ground; In an embodiment of the present invention, a landing instruction of an aircraft is received through a ground system. The instruction is usually issued by an air traffic control system according to the current flight status of the aircraft and the target landing runway information. The landing instruction includes information such as the expected landing time, position, and speed of the aircraft. After receiving the landing instruction, the landing process of the aircraft is generated according to the flight status of the aircraft and the landing trajectory. The process includes the positioning information of each key time point of the aircraft during the landing process and the parameters of the landing path. Subsequently, based on the landing process of the aircraft, the communication delay response analysis of the landing light CAN bus control network is performed. Specifically, the light control system sends the control instruction to the aircraft landing adaptive light control logic node through the CAN bus. In order to analyze the delay, it is necessary to record the time from the ground issuing the instruction to the light control node for each node. The delay analysis needs to consider not only the physical distance of data transmission, but also factors such as network load and system processing time. These influencing factors are quantified by establishing a mathematical model, and finally the light control communication delay between the light control node and the ground is generated.

[0030] Step S152: Acquire landing light adjustment requirements, including adjustment requirements for light brightness, color, and flashing frequency when the aircraft lands; In the embodiment of the present invention, the acquisition of the landing light adjustment demand needs to be adjusted according to the landing requirements of the aircraft and the external environmental conditions. When the aircraft lands, the lighting system is usually required to provide different brightness, colors and flashing frequencies to ensure that the pilot can clearly identify the landing area. Specifically, the aircraft's altitude, speed, heading and other data are acquired in real time through the aircraft's sensors and flight control system, and the light adjustment demand is determined in combination with the pilot's input (such as the selection of the landing mode). For example, when the aircraft is at a low altitude and close to landing, the brightness demand should be dynamically adjusted according to the change in the distance between the aircraft and the runway. Generally, the closer the aircraft is to the runway, the brighter the light will be. The higher the light brightness, the more sufficient the pilot's visibility will be. At the same time, the color adjustment requirements are set according to different landing modes. For example, if the aircraft is in an emergency landing state, it needs to flash red or orange lights to alert the ground or other aircraft. The flashing frequency needs to be adjusted according to the speed of the aircraft and the stability of the landing process to provide the pilot with sufficient information. Through real-time communication between the sensor system on the aircraft and the ground command center, the lighting adjustment requirements of the aircraft during the landing process can be accurately obtained, and finally the landing lighting adjustment requirements are obtained, including the adjustment requirements for light brightness, color and flashing frequency when the aircraft lands.

[0031] Step S153: Obtain the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position through the aircraft landing environment data, and perform local environment adaptation evaluation calculation on the corresponding aircraft landing adaptive light control logic node in the landing light CAN bus control network using the landing light local environment adaptation calculation formula based on the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position and the light control communication delay between the light control node and the ground, so as to obtain the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position; In an embodiment of the present invention, the external environment weather changes and air obstacle information of each aircraft landing distribution location are obtained through aircraft landing environment data. This data is usually provided by meteorological sensors on the aircraft, external radars, and a real-time communication network between the aircraft and the ground system. This data includes wind speed, wind direction, cloud height, visibility, temperature and other information. According to the specific environmental data of each aircraft landing distribution location, a comprehensive analysis of external environment changes and air obstacles will be performed. For example, when the weather conditions at the landing location are poor (such as heavy fog or strong wind), the light brightness requirement will increase and the flashing frequency needs to be accelerated to ensure that the pilot can find the landing area as early as possible. At the same time, if there are air obstacles (such as other aircraft or buildings), the risk of affecting the aircraft landing path will be calculated, and corresponding adjustments will be made in the light control, so as to obtain the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution location. Next, by combining the horizontal coordinate of the distribution position, the vertical coordinate of the distribution position, the vertical coordinate of the distribution position, the lighting control communication delay between the lighting control node and the ground, the lighting brightness intensity level, the average brightness intensity level, the external environment weather change measurement, the landing light sensitivity factor to the external aerial obstacles, the external aerial obstacle distribution distance and related parameters, a suitable landing light local environment adaptation calculation formula is constructed to evaluate the environmental adaptation of the corresponding lighting control node. The formula takes into account factors such as weather changes, obstacles, and communication delays to calculate the local environmental adaptation coefficient of each position as the adjustment parameter of the lighting control strategy, and finally obtains the landing light local environmental adaptation coefficient corresponding to the lighting control node at each distribution position.

[0032] Among them, the calculation formula for the local environment adaptation of the landing light is as follows: ; In the formula, For lighting control nodes in distribution position The corresponding landing light local environment adaptation coefficient is: is the horizontal coordinate of the distribution position, is the ordinate of the distribution position, is the vertical coordinate of the distribution position, is the light control communication delay between the light control node and the ground, is the time variable parameter, The total number of landing lights in the light control node. For the lighting control node Landing lights are distributed at and time The corresponding light brightness intensity level is For lighting control nodes in distribution position and time The corresponding average brightness intensity level is For lighting control nodes in distribution position and time The corresponding external environment weather change measurement is: is an exponential function, For the A sensitivity factor of the landing lights to external aerial obstacles, For lighting control nodes in distribution position and time The corresponding external air obstacle distribution distance is: It is the correction factor of the local environment adaptation factor of the landing light; The present invention obtains a landing light local environment adaptation calculation formula by using a specific mathematical model and after verification, which is used to perform local environment adaptation evaluation calculation on the corresponding aircraft landing adaptive light control logic node in the landing light CAN bus control network. The landing light local environment adaptation calculation formula takes into account multiple time factors (such as t), and can dynamically adjust the light for different landing positions and time periods, thereby enhancing the real-time adaptability of the lighting system. The formula also includes multiple key parameters: light brightness level, average brightness level, external environment weather change measurement, obstacle sensitivity factor, and obstacle distribution distance. The comprehensive consideration of these factors enables the calculation formula to not only adjust the light based on a single variable, but also comprehensively consider the impact of the external environment and air obstacles on the landing light, thereby improving the ability to accurately control the light during the landing process. By calculating the exponential relationship between the light brightness and the average brightness ratio, and introducing environmental sensitivity and obstacle influences, the formula can optimize control for external environments (such as weather changes and aerial obstacles). For example, weather changes lead to reduced visibility, while obstacle distribution affects the aircraft's landing path and safety. Through the combination of exponential functions and sensitivity factors, the lighting system can intelligently increase or decrease light intensity to adapt to these changes and ensure safe landing of the aircraft. Represents the communication delay between the lighting control node and the ground. This parameter reflects the delay problem of system response. In practical applications, the lighting system must take into account the impact of this delay, especially under high-density traffic or complex meteorological conditions. The system requires additional response time to correctly adjust the light brightness. This formula accurately calculates the delay effect to ensure that the lighting control can still maintain accurate response in the presence of communication delays, avoiding untimely or incorrect control due to delays. In addition, the correction coefficient in the formula makes the local environmental adaptation coefficient of the landing light have greater flexibility and correction space. It can be adjusted according to actual test data, thereby optimizing the adaptability and responsiveness of the entire system and ensuring that the lighting adjustment meets the best requirements in different environments. By comprehensively considering the above factors, the final local environmental adaptation coefficient can help the lighting system to make intelligent adjustments according to the landing requirements of the aircraft, environmental changes, and potential obstacles. In this way, the landing process of the aircraft will be smoother and safer, and the lighting control system can better cooperate with the landing strategy of the aircraft, thereby improving flight safety and operability. In summary, this formula fully considers the distribution of lighting control nodes in the distribution location. The corresponding landing light local environment adaptation coefficient , the horizontal coordinate of the distribution position , distribution position ordinate , distribution location vertical coordinate , the lighting control communication delay between the lighting control node and the ground , time variable parameter , the total number of landing lights in the light control node , the lighting control node Landing lights are distributed in and time The corresponding light brightness intensity level , lighting control nodes are distributed in and time The corresponding average brightness intensity level , lighting control nodes are distributed in and time The corresponding external environment weather change measurement , exponential function , No. Sensitivity factor of landing lights to external aerial obstacles , lighting control nodes are distributed in and time The corresponding external air obstacle distribution distance , correction factor of the local environment adaptation factor of landing lighting , according to the distribution position of the light control node The corresponding landing light local environment adaptation coefficient The correlation between the above parameters forms a functional relationship: ; This formula can realize the local environment adaptation evaluation calculation process of the corresponding aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network. At the same time, the correction coefficient of the local environment adaptation coefficient of the landing lighting is The introduction of can be adjusted according to the errors that occur in the calculation process, thereby improving the accuracy and applicability of the calculation formula for the local environment adaptation of the landing light.

[0033] Step S154: Based on the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position, the corresponding aircraft landing adaptive light control logic node is subjected to local response control of the landing light, and a landing light local response control instruction is generated.

[0034] In the embodiment of the present invention, local response control is performed on the aircraft landing adaptive lighting control logic node based on the local environment adaptation coefficient of the lighting obtained in the previous step. Specifically, the calculated adaptation coefficient is first input into the control logic node, and it is judged by using a preset threshold. If the adaptation coefficient corresponding to the landing lighting is greater than or equal to the preset threshold, the lighting response strategy at the corresponding landing distribution position is determined. Each control logic node generates a corresponding lighting adjustment instruction according to the specific conditions of the surrounding environment (such as wind speed, weather, obstacles, etc.) and delay data. For example, when the weather conditions are poor and the aircraft landing position is far away, the system will indicate that the brightness of the indicator light is increased and the flashing frequency is accelerated, in order to improve the visual visibility of the pilot. When the temperature is better and the pilot is close to the runway, the system will choose normal brightness and slower flashing frequency. After receiving these local response control instructions, each lighting control node will immediately adjust the brightness, color and flashing frequency of the lights, and feedback its status information through the CAN bus to ensure the real-time and accuracy of the lighting control system. When it is less than the preset threshold, the landing lights at the corresponding position will not be turned on. The local response control instructions in this process can ensure that each lighting control node performs the optimal lighting adjustment at a specific landing distribution position to maximize the pilot's landing safety and visual experience. All operations are based on real-time environmental data and communication delay analysis to ensure the efficiency and adaptability of the entire system, and ultimately generate local response control instructions for landing lights.

[0035] Further, the step S151 of performing communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network and the ground based on the aircraft landing process includes the following steps: Perform light node response monitoring on the communication process between the aircraft landing adaptive light control logic node and the ground in the landing light CAN bus control network to obtain the communication response time of the landing light control node; In the embodiment of the present invention, the communication link between the control logic node and the ground station in the landing lighting system is connected through the CAN bus control network. The core of this step is to monitor the communication response of the lighting control node in real time. The specific operation process is to first establish a CAN bus communication channel between the aircraft and the ground to ensure that both ends can transmit data normally. In this process, specific hardware interface devices (such as CAN adapter modules) and software tools (such as CANalyzer or other CAN monitoring software) are used to capture and analyze communication signals in real time. During the communication monitoring process, whenever the aircraft landing lighting control node sends a request signal, the ground system should respond and record the timestamp of the response. By comparing the time points of signal sending and receiving, the time difference from the sending of the request signal to the receiving of the response signal is calculated, thereby obtaining the communication response time of the lighting control node, and finally obtaining the communication response time of the landing lighting control node.

[0036] Preferably, the current corresponding landing speed and landing direction of the aircraft are obtained through the aircraft landing process; In an embodiment of the present invention, real-time data on the landing process, especially the current landing speed and landing azimuth of the aircraft, is obtained from the aircraft system. When this operation is implemented, the relevant data can be obtained by integrating the flight data monitoring system of the aircraft. In specific implementation, the sensors in the flight data processing system (such as radar, inertial navigation unit (INS) or GPS positioning module) will provide real-time flight parameters of the aircraft. These sensors will detect the aircraft's speed, azimuth, pitch angle and other attitude data in real time, and transmit this information to the flight control computer of the aircraft through the data bus. In particular, the values ​​of the landing speed and landing azimuth will be extracted and transmitted to the control system through a specific data format (such as a CAN bus data frame or other aircraft internal data protocol). By analyzing the received flight data, the current landing speed (in meters per second) and landing azimuth (in degrees) of the aircraft can be obtained, and finally the corresponding landing speed and landing azimuth are obtained.

[0037] Preferably, a communication delay response analysis is performed on the communication response time of the landing light control node based on the current landing speed and landing orientation corresponding to the aircraft, so as to generate a light control communication delay between the light control node and the ground.

[0038] In an embodiment of the present invention, by using the current landing speed and landing azimuth data of the aircraft, a detailed delay analysis is performed on the communication response time of the lighting control node. First, the previously obtained communication response time needs to be correlated with the aircraft flight status data for analysis. Specifically, based on the landing speed and azimuth of the aircraft, a preset mathematical model (such as a delay calculation model established based on the flight dynamics of the aircraft and the response characteristics of the lighting control system) is used to quantitatively analyze the relationship between the current state of the aircraft and the communication delay. For example, assuming that the aircraft approaches the runway at a low speed and a stable azimuth, the response time of the lighting control system will be shorter because the lighting system needs to adjust the beam position in real time; and when the aircraft approaches at a higher speed or at a larger flight angle, the communication delay will increase. The analysis is based on a mathematical algorithm to consider factors such as aircraft speed, position, distance, and communication efficiency between the aircraft and the lighting control node. The lighting control communication delay calculated by the model will be used as an important indicator for evaluating the real-time response capability of the lighting control system, and ultimately the lighting control communication delay between the lighting control node and the ground is generated.

[0039] Further, step S2 includes the following steps: Step S21: starting the landing lights of the corresponding local area in the aircraft landing light system through the light control node according to the landing light local response control instruction, and using the working state sensor monitoring sub-block embedded in the light control node to monitor the working state of the corresponding landing lights in real time, so as to obtain the working state of the landing lights, including the on state and the off state; In the embodiment of the present invention, the lighting control node starts the landing lights of the corresponding local area in the aircraft landing lighting system by receiving the local response control instruction of the landing lights, and monitors the switch status of each landing light in real time by using the working status sensor monitoring sub-block embedded in the lighting control node. Each lighting system feeds back its current status through signal transmission, and the lighting control node determines the on or off status of the light according to the feedback information. In this process, the on status of the light is "1", indicating that the light is on; the off status is "0", indicating that the light is off. The lighting control node updates the status information in real time and transmits it to the central control unit for comprehensive processing, so as to ensure that the lighting system status is real-time and effective, and finally obtain the working status of the landing light.

[0040] Step S22: using the brightness sensor monitoring sub-block embedded in the light control node to monitor the brightness distribution of the corresponding landing light in real time, so as to obtain the brightness distribution of the landing light; In the embodiment of the present invention, the brightness sensor monitoring sub-block embedded in the light control node is responsible for real-time monitoring of the brightness distribution of the corresponding landing lights. The sensor sub-block measures the brightness of the lights in the specified area through a photoelectric sensor and transmits the detected brightness data to the light control node. The sensor can accurately calculate the brightness distribution of each light according to the intensity change of the light. Through continuous real-time monitoring, the light control node obtains the light brightness data of each area, ensuring that the pilot maintains the best visibility in each landing area, and finally obtains the brightness distribution of the landing lights.

[0041] Step S23: using the current sensing monitoring sub-block embedded in the light control node to monitor the light current of the corresponding landing light in real time to obtain the landing light current; In the embodiment of the present invention, a current sensor is integrated into the current sensing monitoring sub-block in the lighting control node to monitor the current status of each landing light in real time. The sensor determines the workload of the light by detecting the current change in the lighting circuit to ensure that the current of each landing light operates within a specified range. The current value provided by each current sensor is fed back to the lighting control node in real time. The node determines whether the current of the light is within the normal range based on this information and transmits the result to the central control unit to facilitate subsequent fault diagnosis and maintenance, and finally obtain the landing light current.

[0042] Step S24: using the voltage sensing monitoring sub-block embedded in the light control node to monitor the light voltage of the corresponding landing light in real time to obtain the landing light voltage; In the embodiment of the present invention, the voltage sensing monitoring sub-block is responsible for real-time monitoring of the landing light voltage in the light control node. The sub-block obtains voltage data through a voltage sensor connected to the light circuit and transmits it to the light control node. The sensor can accurately sense the voltage level of each landing light to ensure that the light maintains a stable voltage supply when working. The monitoring system displays the light voltage status in real time through continuous detection. If the voltage is too high or too low, it can be quickly fed back to the central control unit to finally obtain the landing light voltage.

[0043] Step S25: Upload the landing light working status, landing light brightness distribution, landing light current and landing light voltage to the central control unit in the landing light CAN bus control network.

[0044] In the embodiment of the present invention, the working status, brightness distribution, current and voltage data of the landing lights obtained through previous real-time monitoring are uploaded to the CAN bus control network of the landing lights in real time. The lighting control node transmits the collected monitoring data to the central control unit through the built-in communication module. The data transmission adopts the standardized CAN bus protocol to ensure efficient transmission and accuracy of the data. The central control unit performs real-time adjustment, fault diagnosis and status reporting of the lighting system according to the received monitoring data to ensure the normal operation and safety of the entire landing lighting system.

[0045] Further, step S3 includes the following steps: Step S31: using the central control unit to judge and analyze the working state of the landing light, if it is determined that the working state of the landing light is the on state, then obtaining the landing light brightness distribution corresponding to the spatial area of ​​the on state of the landing light; In the embodiment of the present invention, the working state of the landing light system is obtained by the central control unit, and in particular, the on / off state of each group of lights is analyzed. Specifically, the central control unit obtains the working data of the light module through the CAN bus connected to the landing light control system. If it is detected that the landing light is in the on state, the control unit further determines the spatial area of ​​the on state. This spatial area is composed of multiple landing light positions and corresponding illumination ranges. In order to more accurately determine the state of the light, the control unit uses tools such as sensors and photometers to collect data on the spatial area of ​​the on state, records the position, power output and brightness distribution of each landing light, and obtains the brightness distribution of the landing lights in this spatial area through data analysis, and finally obtains the brightness distribution of the landing lights corresponding to the spatial area of ​​the on state.

[0046] Step S32: performing brightness unevenness evaluation calculation on the corresponding landing lights based on the brightness distribution of the landing lights corresponding to the lighting state space area, so as to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the lighting state space area; In an embodiment of the present invention, the brightness unevenness of the corresponding landing lights is evaluated and calculated based on the previously obtained landing light brightness distribution data. The specific method is to first perform statistical analysis on the brightness data in the spatial area where each turned-on landing light is located, calculate the brightness value of each landing light in the area, and compare it with the ideal brightness distribution to evaluate the brightness unevenness of each light. The brightness unevenness can be calculated using mathematical methods such as standard deviation or mean square error, so as to obtain a brightness unevenness evaluation value for each landing light. This brightness unevenness value reflects the degree of brightness difference of a certain light relative to other lights. Through this evaluation, it is possible to identify which landing lights have uneven brightness, and finally obtain the brightness unevenness evaluation value corresponding to each landing light in the spatial area in the turned-on state.

[0047] Step S33: comparing and judging the brightness unevenness evaluation values ​​corresponding to the various landing lights in the lighting state space area according to the preset brightness unevenness threshold value; if the brightness unevenness evaluation value is greater than or equal to the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness uneven; if the brightness unevenness evaluation value is less than the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness balanced; In the embodiment of the present invention, the central control unit compares the brightness unevenness evaluation values ​​of all lights according to the preset brightness unevenness threshold value, and determines which lights have brightness unevenness greater than or equal to the preset brightness unevenness threshold value. If the brightness unevenness evaluation value of a certain landing light reaches or exceeds the preset threshold value, the light is identified as having uneven brightness. At this time, the system will mark the state of the light as "uneven brightness" and use the spatial area corresponding to the light as the target area to be adjusted. If the brightness unevenness evaluation value of a certain light is lower than the preset brightness threshold value, the light is regarded as having balanced brightness and the system does not perform further processing. This judgment operation is completed by the logic judgment module of the central control unit, and the pre-set brightness unevenness threshold value is used for numerical comparison to perform classification management.

[0048] Step S34: using the landing light CAN bus control network to perform brightness uneven response control on the landing lights in the lighting state space area that are determined to correspond to uneven brightness, so as to generate a landing light brightness uneven control management instruction; In the embodiment of the present invention, the CAN bus control network is used to perform uneven brightness response control on the identified landing lights. Specifically, when a certain landing light is judged to have uneven brightness, the system generates an uneven brightness control management instruction. The instruction includes the light identification to be adjusted, the target brightness value to be adjusted, and the execution method of the adjustment. The control instruction is transmitted to each light control node through the CAN bus, and the brightness adjustment of the light is implemented through the control unit on the node. The key to the response control is to adjust the brightness parameters of the light so that the uneven brightness light is as close as possible to the brightness level of the surrounding lights, thereby achieving overall brightness balance. The instruction is transmitted in a standard CAN bus communication protocol to ensure real-time and accuracy, and finally a landing light uneven brightness control management instruction is generated in response.

[0049] Step S35: Apply the landing light brightness uneven control management instruction to the corresponding light control node to perform fine-grained brightness correction management on the corresponding landing lights in the light-on state space area, so as to execute the corresponding landing light brightness uneven control work.

[0050] In an embodiment of the present invention, a lighting control node that receives an uneven brightness control management instruction will perform fine-grained brightness correction on the corresponding landing light according to the instruction. The specific operation is that after receiving the instruction, the lighting control node first reads the current brightness value of each landing light, and then adjusts the brightness of the light according to the target brightness value in the instruction through the dimming module inside the control node. The adjustment process can be performed by changing the current intensity of the light, adjusting the luminous intensity of the light, or through PWM (pulse width modulation) control. Each control node will perform fine-grained correction according to different needs to ensure that after the adjustment, the brightness of the light reaches the predetermined target value and is as consistent as possible with the brightness of the surrounding lights, thereby eliminating the uneven brightness phenomenon. During this process, the CAN bus control system will monitor the status of each light in real time to ensure the accuracy and stability of the brightness adjustment process, so as to ultimately achieve the goal of balanced brightness.

[0051] Further, step S32 includes the following steps: Step S321: constructing a light brightness field for the landing light brightness distribution corresponding to the light-on state space area to generate a landing light brightness distribution field in the light-on area; In an embodiment of the present invention, spatial modeling is performed on an area in a light-on state to generate a brightness distribution field of landing lights in the area. The specific operation includes first starting the corresponding landing light system through a CAN bus network control instruction and setting it to a "light-on" state. The system collects and records the brightness output data of the light. At the same time, based on the feedback data of the sensor, the brightness value of the light at each spatial position is obtained. The brightness value is calculated based on the distance between the light source and the ground or other targets, the radiation angle of the light, and the light attenuation factor, so as to accurately obtain the brightness distribution of each light source in space. In specific implementation, special lighting simulation software is used to simulate the radiation conditions of each landing light according to the light projection mode and ambient lighting conditions in the light-on state. These simulation tools can accurately calculate the brightness distribution field of each light source, and then generate a spatial brightness distribution map of the entire light-on area, and obtain the spatial brightness distribution of each light source in the light-on state, thereby forming a complete brightness field data model, and finally generating a brightness distribution field of landing lights in the light-on area.

[0052] Step S322: obtaining the spatial layout distribution position and light projection angle corresponding to each landing light through the landing light brightness distribution field of the light-on area, and performing light brightness difference analysis between corresponding landing lights in the landing light brightness distribution field of the light-on area based on the spatial layout distribution position corresponding to each landing light, so as to obtain the light brightness distribution difference corresponding to each landing light; In an embodiment of the present invention, the spatial layout distribution position and projection angle corresponding to each light are obtained by analyzing the brightness distribution field of the landing lights in the lighting area. First, the position coordinates of each landing light in the lighting area and its orientation angle (projection angle) are obtained by a sensor or a data acquisition device. This information is usually collected by a gyroscope, an accelerometer and an angle sensor installed in the lighting system. Accurate light layout and projection angle data are obtained in combination with CAN bus data. Based on these spatial layout distribution positions, light brightness difference analysis is performed between corresponding landing lights in the brightness distribution field of the landing lights in the lighting area. The analysis calculates the brightness difference between different landing lights to obtain a series of brightness value comparison results. A mathematical model is used to evaluate the brightness difference between different light sources in the space, involving an illumination difference formula, a light attenuation model, etc. Specifically, by comparing the brightness values ​​of different areas, their relative intensity differences in the space are analyzed to identify areas with uneven brightness distribution, and the brightness difference between each light is obtained, that is, the average value of the brightness difference between the i-th landing light and other landing lights. Finally, the light brightness distribution difference corresponding to each landing light is obtained.

[0053] Step S323: Based on the light projection angles corresponding to each landing light and the light brightness distribution differences, a light brightness unevenness evaluation calculation formula is used to perform brightness unevenness evaluation calculations on the corresponding landing lights in the light-on state space area to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the light-on state space area.

[0054] In the embodiment of the present invention, a suitable light brightness unevenness evaluation calculation formula is formed by combining the area of ​​the light-on state space region, the light projection angle, the horizontal angle, the distance between the light source corresponding to the landing light and the target area, the landing light brightness distribution, the average brightness, the light brightness distribution difference and related parameters to perform brightness unevenness evaluation calculation on the corresponding landing lights in the light-on state space region to obtain the brightness unevenness evaluation value of each light, that is, the degree of brightness unevenness in the light illumination area, and finally obtain the brightness unevenness evaluation value corresponding to each landing light in the light-on state space region.

[0055] Furthermore, the calculation formula for evaluating the unevenness of light brightness in step S323 is specifically: ; In the formula, is the first The brightness unevenness evaluation value corresponding to the landing lights, is the total number of landing lights, is the area of ​​the space in the light-on state, is the first The light projection angle corresponding to the landing light, is the first The horizontal angle corresponding to the landing light, is the first The distance between the landing light source and the target area. is the corresponding landing light brightness distribution at a given angle and distance, is the average brightness corresponding to the lighting state space area, is the first The difference in light brightness distribution corresponding to the landing lights, It is the correction factor of the brightness unevenness evaluation value.

[0056] The present invention obtains a calculation formula for evaluating the unevenness of light brightness by using a specific mathematical model and verifying it, which is used to evaluate and calculate the unevenness of brightness of the corresponding landing lights in the spatial area in the light-on state. The calculation formula for evaluating the unevenness of light brightness can effectively measure the brightness distribution differences and uniformity of the landing lights, and provides an accurate quantitative tool to optimize the lighting arrangement. By considering factors such as the projection angle, horizontal angle, and distance of the light, the formula can comprehensively evaluate the brightness differences of the light in the space, and thus avoid excessively high or low brightness in certain areas during design, ensuring a more uniform brightness distribution in the entire landing area, and improving landing safety and operability. The correction coefficient of the brightness unevenness evaluation value also adds flexibility to the formula, allowing it to adapt to different actual environments and application requirements. In summary, the formula fully takes into account the unevenness of the first and second lights in the spatial area in the light-on state. The brightness unevenness evaluation value corresponding to the landing lights , the total number of landing lights , the area of ​​the light-on state space , the first The light projection angle corresponding to the landing light , the first The horizontal angle corresponding to the landing lights , the first The distance between the landing light source and the target area , the corresponding landing light brightness distribution at a given angle and distance , the average brightness of the lighting state space area , the first The difference in light brightness distribution corresponding to the landing lights , correction coefficient of brightness unevenness evaluation value , according to the lighting state space area The brightness unevenness evaluation value corresponding to the landing lights The correlation between the above parameters constitutes a functional relationship This formula can realize the calculation process of the brightness unevenness evaluation of the corresponding landing lights in the lighting state space area. At the same time, the correction coefficient of the brightness unevenness evaluation value is The introduction of can be adjusted according to the errors that occur in the calculation process, thereby improving the accuracy and applicability of the calculation formula for evaluating the unevenness of light brightness.

[0057] Further, step S4 includes the following steps: Step S41: if it is determined that the landing light working state is the off state, then performing a light signal fluctuation frequency domain conversion on the landing light current and the landing light voltage to generate a landing light current signal distribution waveform and a landing light voltage signal distribution waveform; In the embodiment of the present invention, it is determined that the working state of the landing light is the off state by judging. This operation is to read the state of the landing light control system to confirm whether the landing light that should be in the on state is in the off mode. Once confirmed, the corresponding landing light current and voltage signals are then converted into the frequency domain. The specific operation includes sampling the current signal and voltage signal of the landing light respectively, and using the fast Fourier transform (FFT) algorithm to convert the sampled time domain signal into the frequency domain. Through this conversion, the landing light current signal distribution waveform and the voltage signal distribution waveform can be obtained to reflect its frequency domain characteristics. In this process, the signal sampling frequency must meet the Nyquist sampling theorem to ensure the integrity of the signal. The waveform is drawn and further analyzed through a frequency domain analysis software tool such as Matlab or LabVIEW to obtain the distribution information of the current and voltage on each frequency component, and finally converted to generate the landing light current signal distribution waveform and the landing light voltage signal distribution waveform.

[0058] Step S42: Obtaining a corresponding landing light resistance according to the landing light current and the landing light voltage, and calculating a light circuit power loss of the corresponding landing light based on the landing light current and the landing light resistance to obtain a landing light circuit power loss; In an embodiment of the present invention, the landing light resistance is calculated according to the collected current signal and voltage signal. This calculation is achieved through Ohm's law, that is, using the resistance formula R=V / I, where R is the landing light resistance, V is the voltage, and I is the current. According to the real-time data of the landing light current and voltage signals, the automatic calculation of the formula can be achieved in the software. Specifically, the current and voltage signals are first divided into time windows, a suitable time interval is selected for data calculation, and the current and voltage values ​​at each time point are obtained in real time, and then the resistance value at each time point is calculated. On this basis, the landing light current and resistance value are used to further calculate the power loss of the lighting circuit. The power loss can be calculated through the formula P=I^2xR, where P is the power loss. Combined with the current and resistance data at each moment, the corresponding power loss value at each time point is obtained, and finally the power loss of the landing light circuit is obtained.

[0059] Step S43: performing time-series synchronous change trend analysis on the landing light current signal distribution waveform, the landing light voltage signal distribution waveform and the landing light circuit power loss to obtain the landing light current change trend, the landing light voltage change trend and the landing light power loss change trend; In an embodiment of the present invention, by performing a time-series synchronous change trend analysis on the current signal distribution waveform, voltage signal distribution waveform and power loss signal of the landing light obtained by the previous analysis, it is first necessary to ensure that the current signal, voltage signal and power loss data are aligned on the time axis in order to perform a multi-dimensional change trend analysis. This step is achieved by using high-precision clock synchronization technology during data acquisition to ensure that the timestamp of each signal is consistent. Next, a data processing software (such as the SciPy library in MATLAB or Python) is used to perform a trend analysis on the time series data of each signal to identify the change characteristics of the current, voltage and power loss over a period of time. For example, the gradual increase and decrease of the current, the fluctuation of the voltage, etc. can all be used to extract trend information through the time series analysis method. During the analysis process, the sliding window technology is used to smooth the signal and remove noise to ensure the accuracy of the trend judgment, and finally the change trend of the landing light current, the change trend of the landing light voltage and the change trend of the landing light power loss are obtained.

[0060] Step S44: based on the change trend of the landing light current, the change trend of the landing light voltage and the change trend of the landing light power loss, a fault identification and judgment analysis is performed on the corresponding landing light in the off state. If the change trend of the landing light current is decreasing, the change trend of the landing light voltage is increasing and the change trend of the landing light power loss is locally increasing, then it is determined that the corresponding landing light is a poor contact fault; if the change trend of the landing light current is rapidly increasing, the change trend of the landing light voltage is suddenly decreasing and the change trend of the landing light power loss is sharply increasing, then it is determined that the corresponding landing light is a short circuit fault; if the change trend of the landing light current is gradually increasing, the change trend of the landing light voltage is slightly decreasing and the change trend of the landing light power loss is gradually increasing, then it is determined that the corresponding landing light is an overload fault; if the change trend of the landing light current is rapidly decreasing to zero, the change trend of the landing light voltage is temporarily unstable and the change trend of the landing light power loss is rapidly decreasing to zero, then it is determined that the corresponding landing light is a circuit breaker fault; In the embodiment of the present invention, the corresponding landing lights in the off state are identified and judged according to the current change trend, voltage change trend and power loss change trend. According to the previous trend analysis results, different fault types are classified by using the rule judgment method. Specifically, the change trends of the current, voltage and power loss of each light are first compared and analyzed: if the current change trend is decreasing, the voltage change trend is increasing, and the power loss change trend is locally increasing, it can be determined as a poor contact fault; if the current increases sharply, the voltage drops suddenly, and the power loss increases sharply, it is a short circuit fault; if the current increases gradually, the voltage drops slightly, and the power loss increases gradually, it should be an overload fault; if the current drops to zero quickly, the voltage is temporarily unstable and the power loss drops to zero quickly, it can be determined as a circuit breaker fault. The judgment standard of each fault type must strictly follow the specific threshold conditions, and real-time judgment is performed in the control system through a dedicated fault diagnosis algorithm. The algorithm usually includes a threshold detection module and a fault matching module, which are used to extract relevant features from the real-time data stream and match the fault model to ensure that potential landing light fault types can be discovered and processed in time.

[0061] Step S45: Use the corresponding lighting control nodes in the landing lighting CAN bus control network to perform lighting operation fault control management on the corresponding landing lighting with poor contact, short circuit, overload and open circuit faults, and generate landing lighting operation fault control management instructions to execute the corresponding landing lighting off state fault adjustment control work.

[0062] In the embodiment of the present invention, the corresponding fault control management operation is performed by communicating with the light control node through the CAN bus control network based on the landing light fault identification result. First, the CAN bus control network, as a high-speed and reliable communication method, can transmit fault information in real time. Through the CAN protocol, the fault type (poor contact, short circuit, overload or open circuit) and its specific parameters can be transmitted to the corresponding control node. The control node generates corresponding landing light operation fault control management instructions according to the received fault information, such as turning off the fault light, restarting the light circuit or switching the backup circuit, etc. The fault adjustment instruction will be sent back to the corresponding light control module through the CAN bus to perform the fault control task. Each light control node should have the ability to handle fault management and can respond quickly according to the control instruction. The processing time and response speed of the fault management instruction should meet the aviation or other high reliability requirements to ensure the normal operation of the landing light system, and make necessary adjustments and repairs in time, and finally perform the corresponding landing light off state fault adjustment control work.

[0063] Furthermore, the present invention also provides a system for controlling and monitoring landing lights based on a CAN bus, which is used to execute the method for controlling and monitoring landing lights based on a CAN bus as described above. The system for controlling and monitoring landing lights based on a CAN bus comprises: The landing light local control response module is used to establish a light control node in the aircraft landing light system and connect the light control node to the central control unit through a control network using the CAN bus protocol to generate a landing light CAN bus control network; obtain the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network, and perform landing light local response control on the light control node in the landing light CAN bus control network based on the ground receiving landing instruction and the aircraft landing environment data, thereby generating a landing light local response control instruction; The landing light response status real-time monitoring module is used to start the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and use the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, and obtain the landing light feedback status real-time monitoring data set, which includes the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and upload it to the central control unit in the landing light CAN bus control network; The lighting state uneven brightness control management module is used to use the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the lighting state, the corresponding landing light is controlled and managed based on the landing light brightness distribution and using the landing light CAN bus control network, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; The off-state operation fault control management module is used to perform light operation fault control management on the corresponding landing light based on the landing light current and the landing light voltage and using the landing light CAN bus control network if it is determined that the landing light working state is the off state, and generate a landing light operation fault control management instruction to execute the corresponding landing light off-state fault adjustment control work.

[0064] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A method for controlling and monitoring landing lights based on CAN bus, characterized in that: The following steps are involved: Step S1: A lighting control node is established in the aircraft landing lighting system and the lighting control node is connected to the central control unit through a control network using the CAN bus protocol to generate a landing lighting CAN bus control network; the central control unit in the landing lighting CAN bus control network obtains ground receiving landing instructions and aircraft landing environment data, and performs landing lighting local response control on the lighting control node in the landing lighting CAN bus control network based on the ground receiving landing instructions and aircraft landing environment data to generate a landing lighting local response control instruction; Step S2: starting the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and using the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, obtaining a real-time monitoring data set of the landing light feedback status, including the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and uploading it to the central control unit in the landing light CAN bus control network; Step S3: using the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the on state, then based on the landing light brightness distribution and using the landing light CAN bus control network, the corresponding landing light is controlled for uneven brightness, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; Step S4: If it is determined that the landing light working state is off, then based on the landing light current and the landing light voltage and using the landing light CAN bus control network, the corresponding landing light is controlled for light operation fault management, and a landing light operation fault control management instruction is generated to execute the corresponding landing light off state fault adjustment control work.

2. The method for controlling and monitoring landing lights based on CAN bus according to claim 1, characterized in that: Step S1 includes the following steps: Step S11: by setting up a lighting control node in the aircraft landing lighting system, wherein each lighting control node controls a corresponding set of landing lights in the aircraft landing lighting system; Step S12: acquiring the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, and based on the real-time flight parameters of the aircraft landing and the aircraft landing lighting requirements, using the embedded control algorithm to perform intelligent programming control on the lighting control node to generate an aircraft landing adaptive lighting control logic node; Step S13: using the CAN bus protocol to connect each aircraft landing adaptive light control logic node with the central control unit via a CAN bus control network to generate a landing light CAN bus control network; Step S14: obtaining the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network; Step S15: Based on the landing instruction received on the ground and the aircraft landing environment data, the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network is subjected to local response control of the landing lighting to generate a landing lighting local response control instruction.

3. The method for controlling and monitoring landing lights based on CAN bus according to claim 2, characterized in that: Step S15 includes the following steps: Step S151: receiving a landing instruction from the ground to obtain the corresponding aircraft landing process, and performing a communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node in the landing lighting CAN bus control network and the ground based on the aircraft landing process, so as to generate a lighting control communication delay between the lighting control node and the ground; Step S152: Acquire landing light adjustment requirements, including adjustment requirements for light brightness, color, and flashing frequency when the aircraft lands; Step S153: Obtain the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position through the aircraft landing environment data, and perform local environment adaptation evaluation calculation on the corresponding aircraft landing adaptive light control logic node in the landing light CAN bus control network using the landing light local environment adaptation calculation formula based on the external environment weather changes and external air obstacles corresponding to each aircraft landing distribution position and the light control communication delay between the light control node and the ground, so as to obtain the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position; Among them, the calculation formula for the local environment adaptation of the landing light is as follows: ； In the formula, For lighting control nodes in distribution position The corresponding landing light local environment adaptation coefficient is: is the horizontal coordinate of the distribution position, is the ordinate of the distribution position, is the vertical coordinate of the distribution position, is the light control communication delay between the light control node and the ground, is the time variable parameter, The total number of landing lights in the light control node. For the lighting control node Landing lights are distributed in and time The corresponding light brightness intensity level is For lighting control nodes in distribution position and time The corresponding average brightness intensity level is For lighting control nodes in distribution position and time The corresponding external environment weather change measurement is: is an exponential function, For the A sensitivity factor of the landing lights to external aerial obstacles, For lighting control nodes in distribution position and time The corresponding external air obstacle distribution distance is: It is the correction factor of the local environment adaptation factor of the landing light; Step S154: Based on the landing light local environment adaptation coefficient corresponding to the light control node at each distribution position, the corresponding aircraft landing adaptive light control logic node is subjected to local response control of the landing light, and a landing light local response control instruction is generated.

4. The method for controlling and monitoring landing lights based on CAN bus according to claim 3, characterized in that: The step S151 of performing communication delay response analysis on the communication process between the aircraft landing adaptive lighting control logic node and the ground in the landing lighting CAN bus control network based on the aircraft landing process includes the following steps: Perform light node response monitoring on the communication process between the aircraft landing adaptive light control logic node and the ground in the landing light CAN bus control network to obtain the communication response time of the landing light control node; Obtain the aircraft's current landing speed and landing direction through the aircraft's landing process; Based on the current landing speed and landing direction of the aircraft, the communication delay response analysis of the landing light control node communication response time is performed to generate the light control communication delay between the light control node and the ground.

5. The method for controlling and monitoring landing lights based on CAN bus according to claim 1, characterized in that: Step S2 includes the following steps: Step S21: starting the landing lights of the corresponding local area in the aircraft landing light system through the light control node according to the landing light local response control instruction, and using the working state sensor monitoring sub-block embedded in the light control node to monitor the working state of the corresponding landing lights in real time, so as to obtain the working state of the landing lights, including the on state and the off state; Step S22: using the brightness sensor monitoring sub-block embedded in the light control node to monitor the brightness distribution of the corresponding landing light in real time, so as to obtain the brightness distribution of the landing light; Step S23: using the current sensing monitoring sub-block embedded in the light control node to monitor the light current of the corresponding landing light in real time to obtain the landing light current; Step S24: using the voltage sensing monitoring sub-block embedded in the light control node to monitor the light voltage of the corresponding landing light in real time to obtain the landing light voltage; Step S25: Upload the landing light working status, landing light brightness distribution, landing light current and landing light voltage to the central control unit in the landing light CAN bus control network.

6. The method for controlling and monitoring landing lights based on CAN bus according to claim 1, characterized in that: Step S3 includes the following steps: Step S31: using the central control unit to judge and analyze the working state of the landing light, if it is determined that the working state of the landing light is the on state, then obtaining the landing light brightness distribution corresponding to the spatial area of ​​the on state of the landing light; Step S32: performing brightness unevenness evaluation calculation on the corresponding landing lights based on the brightness distribution of the landing lights corresponding to the lighting state space area, so as to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the lighting state space area; Step S33: comparing and judging the brightness unevenness evaluation values ​​corresponding to the various landing lights in the lighting state space area according to the preset brightness unevenness threshold value; if the brightness unevenness evaluation value is greater than or equal to the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness uneven; if the brightness unevenness evaluation value is less than the preset brightness unevenness threshold value, then determining that the corresponding landing lights in the lighting state space area are brightness balanced; Step S34: using the landing light CAN bus control network to perform brightness uneven response control on the landing lights in the lighting state space area that are determined to correspond to uneven brightness, so as to generate a landing light brightness uneven control management instruction; Step S35: Apply the landing light brightness uneven control management instruction to the corresponding light control node to perform fine-grained brightness correction management on the corresponding landing lights in the light-on state space area, so as to execute the corresponding landing light brightness uneven control work.

7. The method for controlling and monitoring landing lights based on CAN bus according to claim 6, characterized in that: Step S32 includes the following steps: Step S321: constructing a light brightness field for the landing light brightness distribution corresponding to the light-on state space area to generate a landing light brightness distribution field in the light-on area; Step S322: obtaining the spatial layout distribution position and light projection angle corresponding to each landing light through the landing light brightness distribution field of the light-on area, and performing light brightness difference analysis between corresponding landing lights in the landing light brightness distribution field of the light-on area based on the spatial layout distribution position corresponding to each landing light, so as to obtain the light brightness distribution difference corresponding to each landing light; Step S323: Based on the light projection angles corresponding to each landing light and the light brightness distribution differences, a light brightness unevenness evaluation calculation formula is used to perform brightness unevenness evaluation calculations on the corresponding landing lights in the light-on state space area to obtain brightness unevenness evaluation values ​​corresponding to each landing light in the light-on state space area.

8. The method for controlling and monitoring landing lights based on CAN bus according to claim 7, characterized in that: The calculation formula for evaluating the unevenness of light brightness in step S323 is specifically: ； In the formula, is the first The brightness unevenness evaluation value corresponding to the landing lights, is the total number of landing lights, is the area of ​​the space in the light-on state, is the first The light projection angle corresponding to the landing light, is the first The horizontal angle corresponding to the landing light, is the first The distance between the landing light source and the target area. is the corresponding landing light brightness distribution at a given angle and distance, is the average brightness corresponding to the lighting state space area, is the first The difference in light brightness distribution corresponding to the landing lights, It is the correction factor of the brightness unevenness evaluation value.

9. The method for controlling and monitoring landing lights based on CAN bus according to claim 1, characterized in that: Step S4 includes the following steps: Step S41: if it is determined that the landing light working state is the off state, then performing a light signal fluctuation frequency domain conversion on the landing light current and the landing light voltage to generate a landing light current signal distribution waveform and a landing light voltage signal distribution waveform; Step S42: Obtaining a corresponding landing light resistance according to the landing light current and the landing light voltage, and calculating a light circuit power loss of the corresponding landing light based on the landing light current and the landing light resistance to obtain a landing light circuit power loss; Step S43: performing time-series synchronous change trend analysis on the landing light current signal distribution waveform, the landing light voltage signal distribution waveform and the landing light circuit power loss to obtain the landing light current change trend, the landing light voltage change trend and the landing light power loss change trend; Step S44: based on the change trend of the landing light current, the change trend of the landing light voltage and the change trend of the landing light power loss, a fault identification and judgment analysis is performed on the corresponding landing light in the off state. If the change trend of the landing light current is decreasing, the change trend of the landing light voltage is increasing and the change trend of the landing light power loss is locally increasing, then it is determined that the corresponding landing light is a poor contact fault; if the change trend of the landing light current is rapidly increasing, the change trend of the landing light voltage is suddenly decreasing and the change trend of the landing light power loss is sharply increasing, then it is determined that the corresponding landing light is a short circuit fault; if the change trend of the landing light current is gradually increasing, the change trend of the landing light voltage is slightly decreasing and the change trend of the landing light power loss is gradually increasing, then it is determined that the corresponding landing light is an overload fault; if the change trend of the landing light current is rapidly decreasing to zero, the change trend of the landing light voltage is temporarily unstable and the change trend of the landing light power loss is rapidly decreasing to zero, then it is determined that the corresponding landing light is a circuit breaker fault; Step S45: Use the corresponding lighting control nodes in the landing lighting CAN bus control network to perform lighting operation fault control management on the corresponding landing lighting with poor contact, short circuit, overload and open circuit faults, and generate landing lighting operation fault control management instructions to execute the corresponding landing lighting off state fault adjustment control work.

10. A CAN bus-based system for controlling and monitoring landing lights, characterized in that: For executing the method for controlling and monitoring landing lights based on the CAN bus as claimed in claim 1, the system for controlling and monitoring landing lights based on the CAN bus comprises: The landing light local control response module is used to establish a light control node in the aircraft landing light system and connect the light control node to the central control unit through a control network using the CAN bus protocol to generate a landing light CAN bus control network; obtain the ground receiving landing instruction and the aircraft landing environment data through the central control unit in the landing light CAN bus control network, and perform landing light local response control on the light control node in the landing light CAN bus control network based on the ground receiving landing instruction and the aircraft landing environment data, thereby generating a landing light local response control instruction; The landing light response status real-time monitoring module is used to start the corresponding landing light in the aircraft landing light system according to the landing light local response control instruction through the light control node, and use the sensor module embedded in the light control node to monitor the light status of the corresponding landing light in real time, and obtain the landing light feedback status real-time monitoring data set, which includes the landing light working status, landing light brightness distribution, landing light current and landing light voltage, and upload it to the central control unit in the landing light CAN bus control network; The lighting state uneven brightness control management module is used to use the central control unit to judge and analyze the working state of the landing light. If it is determined that the working state of the landing light is the lighting state, the corresponding landing light is controlled and managed based on the landing light brightness distribution and using the landing light CAN bus control network, and a landing light uneven brightness control management instruction is generated to execute the corresponding landing light on state uneven brightness control work; The off-state operation fault control management module is used to perform light operation fault control management on the corresponding landing light based on the landing light current and the landing light voltage and using the landing light CAN bus control network if it is determined that the landing light working state is the off state, and generate a landing light operation fault control management instruction to execute the corresponding landing light off-state fault adjustment control work.

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