Automatic defrosting device, control system and method for slope lamp

Abstract

The present invention discloses an automatic defrosting and anti-frost device, control system and method for a slope lamp, which belongs to the technical field of airport safety auxiliary facilities, and is characterized in that it at least includes: a pneumatic component for driving the air flow at the outer mirror surface of the slope lamp; a control component for controlling the working state of the pneumatic component, the pneumatic component includes a blower, an air guide duct is installed on the air outlet of the blower, a heater is installed in the air guide duct, and the control component includes a fan switch for controlling the action of the blower and a heating switch for controlling the action of the heater. By adopting the above technical solution, the present application adds a defrosting device to the slope lamp peripherals without changing the external mechanical structure and internal electronic circuits of the slope lamp, monitors the temperature and humidity of the surrounding environment of the lamp, and can start the fan to defrost and prevent frost when the critical point of frost is reached to solve the frosting phenomenon on the mirror surface of the slope lamp.

Description

Technical Field

[0001] The invention belongs to the technical field of airport safety auxiliary facilities, and in particular relates to an automatic defrosting and anti-frost device for a slope lamp, a control system and a method. Background Art

[0002] The slope light system in the visual navigation lighting equipment is an important part of the airport visual navigation. It is an essential visual navigation facility for aircraft landing and is used very frequently. The slope light system is composed of four sets of identical lighting devices, which are used to provide pilots with instructions on the correct approach slope. In northern my country, in the cold winter, when the temperature and humidity reach certain environmental conditions, frost will appear on the lens of the slope light of the airport visual navigation light. When the frost on the slope light lens is thick, it will seriously affect the red and white partition display effect of the slope light, and then affect the pilot's judgment of the glide angle during approach, causing safety hazards. In the past winter, when the slope light was just turned on, we often received a notice from the tower, "Lights, the crew reported that there was a problem with the slope light display, you should hurry up and check it." The flight area staff immediately rushed to the scene to check and found that the slope light angle was normal. The only reason for this phenomenon was that there was frost on the mirror surface of the slope light lens window. After manual removal, the crew reported that it returned to normal. In the winter in the north, when the humidity and temperature reach certain environmental conditions, the lens of the airport visual aid slope light often frosts. During the approach of the aircraft, the pilot sees different display states of the slope light at different approach slopes. When the outer lens of the slope light is frosted, due to the refraction of light, it will seriously affect the red and white partition display effect of the slope light. Even if the slope light is emitting at normal angles, it will affect the pilot's correct judgment of the glide angle during approach, causing safety hazards.

[0003] For example, in winter, the duty personnel sometimes suddenly receive feedback from the tower air traffic controller that the runway slope light display has a problem. After receiving the notification, the navigation light maintenance personnel will immediately arrive at the site for inspection. The test results show that the slope light elevation angle and internal components are normal. The only abnormal phenomenon is that the window mirror is frosted. The reason is that the lens frosting affects the normal lighting of the slope light. Then the frosted surface of the lens is manually removed with a scraper and a rag, and the slope light display returns to normal. Therefore, in winter, the lighting maintenance personnel need to increase their efforts to patrol the slope light system. However, with the continuous increase in the number of flights at the airport, the slope light is located close to the runway side. During the normal use of the runway, it is impossible to conduct on-site inspections. In addition, frosting mostly occurs at night, and it is difficult for maintenance personnel to grasp the runway use direction and the frosting of the lamps, and the slope light system has accurate angle data determined by a strict flight calibration procedure. If manual defrosting is performed for a long time, the angle of the slope light and the transparency of the lens will also be affected to varying degrees, posing certain safety hazards. Summary of the invention

[0004] In view of the above-mentioned technical problems existing in the prior art, the present invention provides an automatic defrosting and anti-frost device, control system and method for a slope lamp. Without changing the external mechanical structure and internal electronic circuit of the slope lamp, a defrosting device is added to the periphery of the slope lamp to monitor the temperature and humidity of the surrounding environment of the lamp. When the critical point of frost formation is reached, a fan can be started to defrost and solve the frosting phenomenon on the mirror surface of the slope lamp.

[0005] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is:

[0006] The first invention purpose of this patent is to provide an automatic defrosting device for slope lamps, which at least includes:

[0007] Pneumatic components that drive the air flow at the outer mirror surface of the slope lamp;

[0008] A control component for controlling the working state of the pneumatic component.

[0009] Further: the pneumatic component includes a blower, and an air guide pipeline is installed on the air outlet of the blower.

[0010] Furthermore: a heater is installed in the air guide duct.

[0011] Furthermore: the control component includes a fan switch for controlling the action of the blower and a heating switch for controlling the action of the heater.

[0012] The second invention of this patent is to provide a control system for a slope lamp automatic defrosting device, which at least includes:

[0013] A temperature sensor for detecting the temperature outside the slope lamp;

[0014] humidity sensor for detecting humidity on the outside of the slope light;

[0015] A control terminal for receiving environmental data from a temperature sensor and a humidity sensor and displaying the environmental data;

[0016] A switch controller for controlling the fan switch and / or heating switch state;

[0017] Wherein: the control terminal exchanges data with the temperature sensor and the humidity sensor respectively through wired communication or wireless communication; the switch controller exchanges data with the fan switch and the heating switch respectively through wired communication or wireless communication.

[0018] Furthermore: the control terminal includes a data acquisition card, an Internet of Things and a human-computer interaction machine; the human-computer interaction machine exchanges data with the data acquisition card through the Internet of Things, and the data acquisition card is electrically connected to the temperature sensor and the humidity sensor respectively.

[0019] Furthermore: the switch controller and the human-machine interaction machine perform data exchange via wired communication or wireless communication.

[0020] Furthermore: the control system also includes a graphics acquisition device for collecting and detecting the status of the slope light, and the graphics acquisition device interacts with the Internet of Things through wired communication or wireless communication.

[0021] The third invention objective of this patent is to provide a method based on the above-mentioned slope lamp automatic defrosting and anti-frost control system, which at least includes:

[0022] S1. Establishing a mapping relationship between temperature, humidity and wind speed through experiments; the mapping relationship is: under the conditions of temperature T and humidity RH, the minimum wind speed v during defrosting can be achieved;

[0023] S2, collecting environmental information of temperature and humidity outside the slope lamp;

[0024] S3. Control the fan switch and / or heating switch status according to the environmental information.

[0025] The advantages and positive effects of the present invention are:

[0026] 1. The above technical solution adds a defrost device to the slope lamp without changing the external mechanical structure and internal electronic circuit of the slope lamp, monitors the temperature and humidity of the surrounding environment of the lamp, and starts the fan to defrost when the critical point of frost is reached to solve the frosting phenomenon on the mirror of the slope lamp.

[0027] 2. The above technical solution establishes a mapping relationship between temperature, humidity and wind speed, so that the corresponding optimal defrosting wind speed can be started according to the on-site ambient temperature, which can improve the defrosting efficiency.

[0028] 3. The above technical solution adopts a graphic acquisition device, so it can monitor the frosting phenomenon on site in real time.

[0029] 4. By using a heater, the temperature of the wind can be increased, and the defrosting efficiency can be further improved by hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a structural diagram of a preferred embodiment of the present invention;

[0031] Figure 2 is a circuit diagram of a preferred embodiment of the present invention; DETAILED DESCRIPTION

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] See also Figure 1 to Figure 2 , an automatic defrosting and anti-frost device for a slope lamp, comprising:

[0034] A pneumatic component that drives the air flow at the outer mirror surface of the slope lamp 1;

[0035] A control component for controlling the working state of the pneumatic component.

[0036] Preferably, the pneumatic component comprises a blower 3, and an air guide pipe 2 is installed on the air outlet of the blower.

[0037] In order to improve the defrosting efficiency, when the temperature is too low, the wind can be preheated: a heater is installed in the air guide duct.

[0038] The control component includes a fan switch for controlling the action of the blower and a heating switch for controlling the action of the heater. In this preferred embodiment, both the fan switch and the heating switch are relays controlled by electrical signals.

[0039] The second invention of this patent is to provide a control system for a slope lamp automatic defrosting device, which at least includes:

[0040] A temperature sensor for detecting the temperature outside the slope lamp;

[0041] humidity sensor for detecting humidity on the outside of the slope light;

[0042] A control terminal for receiving environmental data from a temperature sensor and a humidity sensor and displaying the environmental data;

[0043] A switch controller for controlling the fan switch and / or heating switch state;

[0044] Wherein: the control terminal exchanges data with the temperature sensor and the humidity sensor respectively through wired communication or wireless communication; the switch controller exchanges data with the fan switch and the heating switch respectively through wired communication or wireless communication.

[0045] The control terminal includes a data acquisition card, an Internet of Things, and a human-computer interaction machine 4; the human-computer interaction machine exchanges data with the data acquisition card through the Internet of Things, and the data acquisition card is electrically connected to a temperature sensor and a humidity sensor, respectively. In order to prevent wind and sun, the data acquisition card can be placed in a control cabinet 5. The human-computer interaction machine 4 is preferably a computer.

[0046] The switch controller and the human-machine interaction machine perform data exchange via wired communication or wireless communication.

[0047] The control system also includes a graphics acquisition device for acquiring and detecting the state of the slope lamp, and the graphics acquisition device interacts with the Internet of Things through wired communication or wireless communication.

[0048] The third invention objective of this patent is to provide a method based on the above-mentioned slope lamp automatic defrosting and anti-frost control system, including:

[0049] S1. Through a large number of experiments, a mapping relationship between temperature, humidity and wind speed is established; the mapping relationship is: under the conditions of temperature T and humidity RH, the minimum wind speed v during defrosting can be achieved;

[0050] S2, collecting environmental information of temperature and humidity outside the slope lamp;

[0051] S3. Control the fan switch and / or heating switch status according to the environmental information.

[0052] The following examples are explained in detail:

[0053] In high-latitude areas, when the temperature and humidity reach certain conditions during the cold winter, frost will appear. The following are ten sets of temperature and humidity data recorded by the inspectors, and a qualitative analysis of the ten sets of temperature and humidity data is conducted:

[0054] Table 1 Temperature and humidity

[0055]

[0056] In Table 1, it can be seen that the highest temperature is minus 6℃. The five sets of data basically meet the conditions for frosting. The humidity has certain changes. When the humidity is 25%RH and 30%RH, there is no frost on the slope lamp lens. When the humidity is 40%RH, 45%RH and 55%RH, there is frost on the slope lamp lens. It can be roughly judged that when the temperature meets the conditions, the humidity frosting condition is between 30%RH and 40%RH. In order to meet the anti-frost of the automatic defrosting device of the slope lamp, the humidity can be reduced to 30%RH.

[0057] Table 2 Temperature and humidity

[0058]

[0059] In Table 2, it can be seen that the lowest humidity is 66% RH. The humidity of these five sets of data all meet the conditions for frosting. The temperature has certain changes. When the temperature is 5℃ and 4℃, there is no frost on the slope lamp lens. When the temperature is 1℃, -2℃ and -3℃, there is frost on the slope lamp lens. It can be judged that when the humidity meets the conditions, the frosting condition of the temperature is between 1℃ and 4℃. In order to meet the anti-frost of the automatic defrosting device of the slope lamp, the temperature can be raised to 4℃.

[0060] According to the above two tables, the qualitative analysis of the frosting conditions of the slope lamp lens can obtain two humidity and temperature critical values. When designing, we can set the humidity threshold to 30% RH and the temperature threshold to 4°C. When the humidity near the slope lamp reaches or exceeds 30% RH, Arduino starts the hair dryer; when the temperature near the slope lamp reaches or falls below 4°C, Arduino starts the electric heater. In this way, the frosting conditions near the slope lamp lens are destroyed, and the frosting of the slope lamp lens is prevented and removed.

[0061] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An automatic defrosting device for a slope lamp, characterized in that: At least: A pneumatic component for driving air flow at the outer mirror surface of the slope lamp; the pneumatic component includes a blower, an air guide pipe is installed on the air outlet of the blower; a heater is installed in the air guide pipe; A control component for controlling the working state of the pneumatic component; the control component includes a blower switch for controlling the action of the blower and a heating switch for controlling the action of the heater; A control system, the control system comprising: A temperature sensor for detecting the temperature outside the slope lamp; humidity sensor for detecting humidity on the outside of the slope light; A control terminal for receiving environmental data from a temperature sensor and a humidity sensor and displaying the environmental data; A switch controller for controlling the fan switch and / or heating switch state; Graphics acquisition equipment for acquiring and detecting the status of slope lights; Wherein: the control terminal exchanges data with the temperature sensor and the humidity sensor respectively through wired communication or wireless communication; the switch controller exchanges data with the fan switch and the heating switch respectively through wired communication or wireless communication; the graphic acquisition device exchanges data with the Internet of Things through wired communication or wireless communication; the control terminal includes a data acquisition card, the Internet of Things and a human-computer interaction machine; the human-computer interaction machine exchanges data with the data acquisition card through the Internet of Things, and the data acquisition card is electrically connected to the temperature sensor and the humidity sensor respectively; the switch controller exchanges data with the human-computer interaction machine through wired communication or wireless communication; The control methods of the control system include: S1. Establishing a mapping relationship between temperature, humidity and wind speed through experiments; the mapping relationship is: under the conditions of temperature T and humidity RH, the minimum wind speed v during defrosting can be achieved; S2, collecting environmental information of temperature and humidity outside the slope lamp; S3. Control the fan switch and / or heating switch status according to the environmental information.

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