Light control device and unmanned aerial vehicle landing control system

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a light control device and an unmanned aerial vehicle landing control system, the light control device collects the illumination intensity of a landing two-dimensional code area in real time through a light sensor, and a controller accurately regulates and controls the brightness of a light supplement lamp according to the illumination intensity. It can be ensured that the two-dimensional code landing area is always in a proper illumination condition, and the illumination brightness of the two-dimensional code landing area is ensured. Meanwhile, unnecessary energy waste is avoided through the on-demand adjustment mode, compared with traditional illumination setting with fixed brightness, the energy consumption of the whole light control device is remarkably reduced, and the energy-saving and environment-friendly effects are achieved. Therefore, according to the utility model, the brightness of the light supplement lamp is controlled through the controller and the light sensor, and an engineer does not need to debug the brightness of the light supplement lamp on site, so that the problems of inconvenient deployment and poor environment change adaptability are solved. Meanwhile, only one light sensor needs to be added, the hardware cost is low, and implementation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane technical field, concretely relates to a light control device and unmanned plane landing control system. BACKGROUND

[0002] At present, when the general unmanned plane returns to the unmanned plane hangar after completing the task, it is generally first landed from high altitude under the GPS positioning, and when landing to a certain point, the unmanned plane on-board camera collects the landing two-dimensional code data on the unmanned plane hangar apron, and the visual navigation is started to guide the unmanned plane to land accurately on the unmanned plane hangar apron.

[0003] Because the unmanned plane hangar is deployed outdoors, time factors (day / night, etc.), weather factors (sunny / cloudy, etc.), surrounding environment (open area / surrounding trees or large buildings, etc.) and other factors will affect the illumination of the landing two-dimensional code on the unmanned plane hangar apron. In order to enable the unmanned plane on-board camera to stably collect data and achieve stable landing, a supplementary light is needed to be added around the landing two-dimensional code to ensure the illumination of the landing two-dimensional code area.

[0004] However, the brightness of the landing two-dimensional code supplementary light of the unmanned plane hangar apron is generally the result of the on-site environment debugging by the engineering personnel when the unmanned plane hangar is deployed, which is inconvenient to deploy and has poor adaptability to environmental changes. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a light control device and unmanned plane landing control system to solve the problem that the brightness of the landing two-dimensional code supplementary light of the unmanned plane hangar apron is generally the result of the on-site environment debugging by the engineering personnel when the unmanned plane hangar is deployed, which is inconvenient to deploy and has poor adaptability to environmental changes.

[0006] In the first aspect, the utility model provides a light control device for the unmanned plane hangar, and the unmanned plane hangar is provided with a landing two-dimensional code; the light control device comprises a supplementary light, a light sensor and a controller, the controller is connected with the supplementary light and the light sensor respectively; the supplementary light is used for providing illumination for the landing two-dimensional code area corresponding to the landing two-dimensional code; the light sensor is used for collecting the illumination intensity of the landing two-dimensional code area; and the controller is used for controlling the brightness of the supplementary light through the illumination intensity.

[0007] The light control device provided by the utility model can ensure that the landing two-dimensional code area is always under suitable illumination conditions and ensure the illumination brightness of the landing two-dimensional code area. Meanwhile, the need-adjusting mode avoids unnecessary energy waste, significantly reduces the energy consumption of the whole light control device compared with the traditional fixed-brightness lighting setting, and realizes the energy-saving and environment-friendly effect. Therefore, by implementing the utility model, the brightness of the light supplementing lamp is controlled by the controller and the light sensor, the engineering personnel do not need to on-site debug the brightness of the light supplementing lamp, and the problems of inconvenient deployment and poor adaptability to environmental changes are solved. Meanwhile, only one light sensor needs to be added, the hardware cost is low, and the implementation is easy.

[0008] In an optional implementation, the controller is further configured to control the switching of the light supplementing lamp based on the illumination intensity.

[0009] The light control device provided by the utility model can effectively reduce the risk of failure of the light supplementing lamp caused by long-time standby, and further improve the reliability and stability of the light control device. Furthermore, support is provided to ensure that the unmanned aerial vehicle can always identify the landing two-dimensional code under various sudden illumination change scenes.

[0010] In an optional implementation, the controller comprises an LED driving chip and a UART-to-RS485 chip.

[0011] In an optional implementation, the controller comprises an MCU chip; the MCU chip is connected with the LED driving chip and is configured to output a pulse width modulation signal to the LED driving chip.

[0012] In an optional implementation, the MCU chip is further connected with the UART-to-RS485 chip and is configured to output a UART signal to the UART-to-RS485 chip.

[0013] In an optional implementation, the LED driving chip is connected with the light supplementing lamp and is configured to output a voltage signal and a current signal to the light supplementing lamp based on the pulse width modulation signal.

[0014] In an optional implementation, the UART-to-RS485 chip is connected with the light sensor and is configured to convert the UART signal into an RS485 signal and output the RS485 signal to the light sensor.

[0015] The utility model provides a kind of unmanned aerial vehicle landing control system, the system includes: unmanned aerial vehicle, unmanned aerial vehicle garage and the light control device of the first aspect or any implementation thereof corresponding above;Unmanned aerial vehicle garage is provided with landing two-dimensional code, landing two-dimensional code is used for unmanned aerial vehicle identification landing position;Unmanned aerial vehicle includes airborne camera and visual navigation device, airborne camera and visual navigation device are connected.

[0016] The unmanned aerial vehicle landing control system provided by the utility model can realize accurate identification and positioning of the landing two-dimensional code through the airborne camera and visual navigation device of the unmanned aerial vehicle, and further, through the stable and suitable illumination conditions provided by the light control device two-dimensional code area, the accuracy of the unmanned aerial vehicle landing position is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 is a schematic diagram of the landing process of the unmanned aerial vehicle according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of the structure of the unmanned aerial vehicle landing control system according to an embodiment of the utility model;

[0020] Figure 3 is a schematic diagram of the structure of the light control device according to an embodiment of the utility model;

[0021] Figure 4 is a schematic diagram of the arrangement of the light supplementing lamp switch and brightness adjusting automatic control device based on the landing two-dimensional code of the unmanned aerial vehicle garage according to an embodiment of the utility model;

[0022] Figure 5 is a schematic diagram of the structure of the MCU control board and the control structure of the light supplementing lamp and the light sensor by the MCU control board according to an embodiment of the utility model;

[0023] Figure 6 is a schematic diagram of the unmanned aerial vehicle landing control process of the light supplementing lamp switch and brightness adjusting automatic control device based on the landing two-dimensional code of the unmanned aerial vehicle garage according to an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper end", "interior" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements, it can be wireless connection, or it can be wired connection. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] As shown in Figure 1 At present, when the general unmanned aerial vehicle returns and lands to the unmanned aerial vehicle warehouse after completing the task, it is generally first positioned by GPS, and then landed from high altitude H point to L point. When landing to L point, the unmanned aerial vehicle on-board camera collects the landing two-dimensional code data on the unmanned aerial vehicle warehouse apron, and opens the visual navigation to guide the unmanned aerial vehicle to land accurately on the unmanned aerial vehicle warehouse apron.

[0029] At present, the brightness of the landing two-dimensional code light supplementing lamp of the unmanned aerial vehicle warehouse apron is generally the result of the on-site debugging by the engineering personnel when the unmanned aerial vehicle warehouse is deployed according to the site environment, which is inconvenient to deploy and has poor adaptability to environmental changes.

[0030] The embodiment of the utility model provides a light control device, which controls the brightness of the light supplementing lamp through the controller and the light sensor, does not need the engineering personnel to debug the brightness of the light supplementing lamp on site, solves the problem of inconvenient deployment and poor adaptability to environmental changes. At the same time, only one light sensor needs to be added, the hardware cost is low, and it is easy to realize.

[0031] A light control device is provided in the embodiment, as shown in the drawings, the light control device 1 is used for an unmanned garage 22, and the unmanned garage 22 is provided with a landing two-dimensional code 221. Figure 2

[0032] The landing two-dimensional code 221 can be clearly and firmly drawn, pasted or set in a designated position of the unmanned garage 22 by other suitable means.

[0033] Figure 3 A structure diagram of a light control device provided by an optional embodiment of the utility model is shown in the drawings, as shown in the drawings, the light control device 1 comprises a supplementary light 11, a light sensor 12 and a controller 13. Figure 3

[0034] The controller 13 is connected with the supplementary light 11 and the light sensor 12 respectively.

[0035] Optionally, the supplementary light 11 is used to provide light for the landing two-dimensional code area corresponding to the landing two-dimensional code 221.

[0036] The supplementary light 11 represents an illuminating device for supplementing light. It should be noted that the number of the above-mentioned supplementary light 11 can be one or more, and the embodiment takes one supplementary light 11 as an example to describe the light control device.

[0037] Specifically, during the construction or reconstruction of the unmanned garage 22, the supplementary light 11 can be reasonably installed at a specific position. Generally, the installation point of the supplementary light can be determined according to the landing two-dimensional code area where the landing two-dimensional code 221 is located and the overall space layout of the unmanned garage, so as to ensure that it can illuminate the landing two-dimensional code area at a suitable angle and range. For example, the supplementary light 11 can be installed at the top, side wall or other positions of the unmanned garage, so as to avoid light dead angles and ensure that the entire landing two-dimensional code area can be covered.

[0038] Further, the related engineering personnel can turn on the supplementary light 11 when the unmanned garage 22 is deployed, and can preliminarily adjust the brightness of the supplementary light according to the environmental light conditions at that time (such as different situations of strong light in the daytime, dim light in the evening, no light at night, etc.). At the same time, the illumination angle of the supplementary light 11 can also be adjusted to make the light cover the landing two-dimensional code area as vertically and uniformly as possible.

[0039] Optionally, the light sensor 12 is used to collect the light intensity of the landing two-dimensional code area.

[0040] The light sensor 12 represents a sensor that can sense the intensity, color and other optical characteristics of the ambient light and convert them into an electrical signal.

[0041] ​​Specifically, the light sensor 12 can be installed at a suitable position of the drone garage, and its position and angle are carefully designed so that it can focus on the landing QR code area. For example, it can be installed on the side wall or top near the QR code area, and the lens or photosensitive surface faces the plane where the landing QR code is located to ensure that the collected light intensity data can truly reflect the actual light conditions of the QR code area.

[0042] Further, when light shines on the landing QR code area and reflects, part of the light will reach the light sensor 12. The photon energy is absorbed by the sensitive elements inside the sensor, triggering the photoelectric effect, such as generating photocurrent or changing the material resistance. Through this process, the light intensity information can be converted into changes in electrical signals (current or voltage).

[0043] Further, the signal conditioning circuit inside the light sensor 12 can amplify, filter and process the converted electrical signals. The amplification circuit can amplify the weak photocurrent or voltage change to a suitable range to facilitate subsequent transmission and processing. The filter circuit can remove noise and interference signals to improve signal quality. Further, the size of the electrical signal (usually an analog voltage signal) after signal conditioning corresponds to the light intensity of the landing QR code area, thereby completing the light intensity collection process.

[0044] Optionally, the controller 13 is used to control the brightness of the light supplement lamp 11 through the light intensity.

[0045] Among them, the controller 13 represents a device for managing, directing and regulating the operation of a system or equipment, and the controller 13 in the embodiment is an MCU controller.

[0046] Further, the controller 13 includes an MCU chip 131, an LED driving chip 132 and a UART-to-RS485 chip 133. Among them, the MCU chip 131 is connected with the LED driving chip 132 and the UART-to-RS485 chip 133 respectively, the LED driving chip 132 is connected with the light supplement lamp 11, and the UART-to-RS485 chip 133 is connected with the light sensor 12.

[0047] Further, the LED driving chip 132 represents an integrated circuit chip specially used for driving light emitting diodes (LEDs), which can provide appropriate current and voltage for LEDs to ensure normal lighting of LEDs and effectively control the lighting characteristics such as brightness and color of LEDs.

[0048] The UART-to-RS485 chip 133 is an interface conversion chip that can convert universal asynchronous receiver-transmitter (UART) interface signals into RS485 interface signals. UART is an interface standard widely used in short-distance serial communication, and RS485 is a differential serial communication interface standard with long-distance and strong anti-interference capability. Through the UART-to-RS485 chip 133, devices originally using UART interface communication can access the RS485 communication network, thereby expanding the communication range and anti-interference capability of the devices.

[0049] By combining the MCU chip 131, the LED driving chip 132, and the UART-to-RS485 chip 133, the controller 13 can control the brightness of the light supplement lamp 11 through the light intensity.

[0050] First, the MCU chip 131 can output a pulse width modulation signal to the LED driving chip 132. Further, after receiving the pulse width modulation signal, the LED driving chip 132 can output stable voltage and current signals to the light supplement lamp 11 to control the brightness of the light supplement lamp 11 under the control of the pulse width modulation signal.

[0051] Specifically, the MCU chip 131 has a clock source inside, which can provide stable clock beats for the operation of the entire chip, just like a precise metronome, ensuring that each part of the chip works in an orderly manner. When a PWM signal is needed to control the brightness of the light supplement lamp 11, the MCU chip will start its timer module. The timer module counts according to the internal clock signal, and it can determine the time measurement according to pre-set parameters such as counting period and initial value.

[0052] Further, the period (T) and duty cycle (D) of the pulse width modulation signal (PWM signal) can be set. The period determines the time interval of the repeated change of the PWM signal, and the duty cycle represents the proportion of the high-level duration in the entire cycle time within a cycle, which is directly related to the average brightness of the light supplement lamp 11.

[0053] For example, to make the light supplement lamp in a dim brightness state, the period of the PWM signal can be set to 10 milliseconds (i.e., 10000 microseconds), and the duty cycle to 20%. That is, in each 10-millisecond cycle, the high-level duration is 2 milliseconds, and the remaining 8 milliseconds is low-level time. Further, the MCU chip 131 can change the output level state at the corresponding time through the control of the timer, thereby generating a PWM signal with a specific period and duty cycle.

[0054] Further, the MCU chip 131 has multiple input / output (I / O) pins, among which are pins dedicated for outputting PWM signals. Thus, after generating a PWM signal, the MCU chip 131 can output the PWM signal from the corresponding I / O pin to the LED driving chip 132 through an internal driving circuit.

[0055] Further, the LED driving chip 132 has a dedicated input pin for receiving the PWM signal from the MCU chip 131. After the PWM signal is transmitted to the input pin of the LED driving chip 132, the signal processing circuit inside the LED driving chip 132 will first perform a decoding operation to identify key parameter information such as the period and duty cycle of the signal. This decoding process is similar to a translator, which converts the received PWM information in the form of electrical signals into data that can be understood and processed by the chip internally.

[0056] For example, the logic circuit inside the LED driving chip 132 can accurately determine the duty cycle of the current PWM signal by detecting the transition time and duration of high and low levels, and thus determine the subsequent current and voltage adjustment operations.

[0057] Further, the LED driving chip 132 is a constant voltage and constant current source that can output a stable voltage and current to light the fill light 11.

[0058] Further, the LED driving chip 132 can adjust the output current according to the duty cycle of the received PWM signal. When the duty cycle of the PWM signal increases, it means that the duration of the high level becomes longer, and at this time the average value of the output current can be correspondingly increased.

[0059] Further, the change in the size of the output current can result in a change in the brightness of the fill light 11, thereby realizing the brightness control of the fill light 11 by the controller 13.

[0060] Secondly, the MCU chip 131 can output a UART signal to the UART-to-RS485 chip 133, and then the UART-to-RS485 chip 133 can convert the UART signal into an RS485 signal with strong anti-interference ability and long transmission distance after receiving the UART signal.

[0061] Specifically, after receiving the UART signal, the UART-to-RS485 chip 133 can identify the UART signal through an internal receiving circuit and obtain the start bit, data bit, parity bit (if any), and stop bit, thereby restoring the original data content.

[0062] Further, the RS485 signal adopts differential signal transmission, and a voltage difference between two signal lines (usually marked as A line and B line) is used to represent a logic state. Therefore, the UART-to-RS485 chip 133 can convert the corresponding logic level into the differential signal form of RS485 through the internal level conversion circuit according to the data content in the parsed UART signal.

[0063] For example, for a data bit representing logic "1" in the UART signal, the UART-to-RS485 chip outputs a relatively high voltage on the A line and a relatively low voltage on the B line, thereby forming a differential signal conforming to the RS485 standard to represent logic "1". Conversely, for logic "0", the voltages output on the A and B lines are adjusted to conform to the differential signal representation of RS485 logic "0".

[0064] In this way, the original UART signal can be converted bit by bit into the RS485 signal.

[0065] Then, the RS485 signal is transmitted to the light sensor 12, and the controller 13 can read the light intensity data collected by the light sensor 12.

[0066] Specifically, after receiving the RS485 signal, the light sensor 12 can read the light intensity value of the current landing two-dimensional code area that has been collected in the light sensor 12 under the control of the RS485 signal.

[0067] Further, after the light sensor 12 sends the RS485 signal containing the light intensity data to the UART-to-RS485 chip, the UART-to-RS485 chip can convert the RS485 signal containing the light intensity data into a UART signal containing the light intensity data again, and further transmit the UART signal containing the light intensity data to the MCU chip 131, and then process the UART signal containing the light intensity data in the MCU chip 131 to obtain the corresponding light intensity data.

[0068] Finally, the MCU chip 131 can control the brightness of the light supplement lamp 111 according to the light intensity data through the LED driving chip 132. The specific control process can refer to the function description and interaction process description of the LED driving chip 132 and the light supplement lamp 111 described above, which will not be described here.

[0069] Optionally, the controller 13 is further configured to control the on-off of the light supplement lamp 11 through the light intensity.

[0070] Specifically, when the controller 13 determines that the light supplement lamp 11 needs to be turned on through the light intensity, the internal MCU chip 131 and LED driving chip 132 can send an opening signal to the light supplement lamp 11.

[0071] Further, after the light supplement lamp 11 receives the opening signal, the internal power supply circuit of the light supplement lamp 11 starts to conduct and supplies power to the light emitting elements (such as LED light strips) in the light supplement lamp 11, and the light emitting elements start to emit light, thereby providing light for the landing two-dimensional code area.

[0072] Further, when the controller 13 determines that the light supplement lamp 11 needs to be turned off through the light intensity, the internal MCU chip 131 and LED driving chip 132 can send a closing signal to the light supplement lamp 11.

[0073] Further, after the light supplement lamp 11 receives the closing signal, the internal power supply circuit of the light supplement lamp 11 is cut off, the light emitting elements stop emitting light, and the light supplement lamp 11 enters the closed state.

[0074] The light control device provided in the embodiment can ensure that the landing two-dimensional code area is always in suitable light conditions and ensure the light intensity of the landing two-dimensional code area. At the same time, the on-demand adjustment avoids unnecessary energy waste, significantly reduces the energy consumption of the entire light control device compared with the traditional fixed brightness lighting setting, and achieves the effect of energy saving and environmental protection. Therefore, by implementing the utility model, the controller and the light sensor control the brightness of the light supplement lamp, and the engineering personnel do not need to debug the brightness of the light supplement lamp on site, thereby solving the problems of inconvenient deployment and poor adaptability to environmental changes. At the same time, only one light sensor needs to be added, the hardware cost is low, and the implementation is easy.

[0075] In the embodiment, an unmanned aerial vehicle landing control system is provided, as shown in Figure 2 The unmanned aerial vehicle landing control system 2 includes an unmanned aerial vehicle 21, an unmanned aerial vehicle garage 22, and the light control device 1 provided in the above embodiment, as shown in Figure 3 The light control device 1 is arranged in the unmanned aerial vehicle garage 22.

[0076] Optionally, the unmanned aerial vehicle garage 22 is provided with a landing two-dimensional code 221.

[0077] The landing two-dimensional code 221 can be clearly and firmly drawn, pasted, or arranged in a designated position of the unmanned aerial vehicle garage 22 by other suitable means.

[0078] Optionally, the unmanned aerial vehicle 21 includes an on-board camera 211 and a visual navigation device 212. The on-board camera 211 and the visual navigation device 212 are connected.

[0079] As shown in Figure 1 When the UAV 21 returns to the UAV hangar 22 after completing the task, it first lands from the high altitude H point to the L point under the GPS positioning, and when landing to the L point, the data of the landing two-dimensional code 221 on the landing pad of the UAV hangar 22 is collected by the onboard camera 211, and the visual navigation device 212 is started to guide the UAV 21 to accurately land on the landing pad of the UAV hangar 22.

[0080] When the data of the landing two-dimensional code 221 on the landing pad of the UAV hangar 22 is collected by the onboard camera 211, the light control device 1 provided in the above embodiment can ensure the light illumination of the landing two-dimensional code area corresponding to the landing two-dimensional code 221. Figure 3

[0081] The UAV landing control system provided in the embodiment can realize accurate recognition and positioning of the landing two-dimensional code through the onboard camera and the visual navigation device of the UAV, and further, through the stable and appropriate light illumination provided by the light control device in the two-dimensional code area, the accuracy of the landing position of the UAV is greatly improved.

[0082] In an example, an automatic control device for switching on and adjusting the brightness of the landing two-dimensional code light supplementing lamp in the UAV hangar is provided, as shown in Figure 4 and Figure 5 By adding a light sensor in the landing two-dimensional code area on the landing pad of the UAV hangar, the MCU control board in the UAV hangar can read the light illumination of the landing two-dimensional code area on the landing pad in real time through the light sensor, and control the switching on and off and the brightness adjustment of the light supplementing lamp in real time. Among them, Figure 5 The LED light bar in the embodiment is Figure 4 The light emitting element of the light supplementing lamp.

[0083] Specifically, the structure of the MCU control board and the control structure of the MCU control board to the light supplementing lamp and the light sensor are as shown in Figure 5 Specifically, the structure of the MCU control board and the control structure of the MCU control board to the light supplementing lamp and the light sensor are as shown in

[0084] (1) The LED light bar and the light sensor are connected to the MCU control board through the connecting line, and the main functions of the MCU control board are realized by the MCU chip, the LED driving chip (LED driving IC) and the UART to RS485 chip.

[0085] (2) The UART interface of the MCU is converted into RS485 signal (RS485 has strong anti-interference ability and long transmission distance) through the conversion chip, and the light sensor is connected to realize the reading of the data of the light sensor by the MCU.

[0086] ​(3) The LED driving chip is a Boost constant-voltage constant-current source, outputs a stable voltage and current to light the LED light bar, and the MCU outputs a PWM signal to the LED driving chip. The MCU can control the output current of the LED driving chip by adjusting the duty cycle of the output PWM signal, and the change of the output current of the LED driving chip will cause the change of the brightness of the LED light bar, so as to realize the control of the brightness of the LED light bar by the MCU.

[0087] Further, a UAV landing control process based on the automatic control device for turning on and off and adjusting the brightness of the landing QR code light of the UAV garage is provided, as shown in the figure, comprising: Figure 6

[0088] (1) The UAV garage receives the demand for returning and landing from the management platform after the UAV operation is completed, and then the UAV garage is opened to expose the landing apron so that the UAV can land.

[0089] (2) After the UAV garage is opened, the MCU control board in the UAV garage reads the data of the light sensor to determine whether the light intensity of the landing QR code area meets the demand of visual navigation of the UAV. If the demand of visual navigation is met, the light supplement lamp does not need to be turned on, and the UAV can land directly.

[0090] (3) If the demand of visual navigation is not met, the MCU control board turns on the light supplement lamp to supplement light for the landing QR code area. The MCU control board reads the data of the light sensor again to determine whether the light intensity of the landing QR code area meets the demand of visual navigation of the UAV. If the demand of visual navigation is met, the UAV can land.

[0091] (4) If the demand of visual navigation is not met, the MCU control board adjusts the brightness of the light supplement lamp while reading the data of the light sensor until the light intensity of the landing QR code area meets the demand of visual navigation of the UAV, and then the UAV lands.

[0092] (5) After the UAV lands, the MCU control board turns off the light supplement lamp and then closes the garage.

[0093] The automatic control device for turning on and off and adjusting the brightness of the landing QR code light of the UAV garage provided in the example has the following beneficial effects:

[0094] (1) The UAV garage can automatically turn on and off and adjust the light supplement lamp, and engineering personnel do not need to adjust the brightness of the light supplement lamp on site, so that the deployment of the UAV garage is simple;

[0095] (2) The brightness of the light supplement lamp of the UAV garage changes with the change of the surrounding light environment, and the adaptability is strong;

[0096] (3) The automatic control of turning on and off and adjusting the brightness of the light supplement lamp is realized.

[0097] ​(4) Only increase a light sensor, low hardware cost, easy to realize.

[0098] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those skilled in the art. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A light control device, characterized by, The application discloses a light control device for a UAV warehouse, wherein the UAV warehouse is provided with a landing QR code; the light control device comprises a light supplement lamp, a light sensor and a controller, and the controller is connected with the light supplement lamp and the light sensor respectively. The light supplement lamp is used for providing light for a landing QR code area corresponding to the landing QR code. The light sensor is used for collecting the light intensity of the landing QR code area. The controller is used for controlling the brightness of the light supplement lamp through the light intensity.

2. The light control apparatus according to claim 1, characterized by The controller is also used for controlling the on-off of the light supplement lamp through the light intensity.

3. The light control apparatus according to claim 1, characterized by The controller comprises an LED driving chip and a UART-to-RS485 chip.

4. The light control apparatus according to claim 3, characterized by The controller comprises an MCU chip. The MCU chip is connected with the LED driving chip and is used for outputting a pulse width modulation signal to the LED driving chip.

5. The light control device according to claim 4, wherein The MCU chip is also connected with the UART-to-RS485 chip and is used for outputting a UART signal to the UART-to-RS485 chip.

6. The light control device according to claim 4, wherein The LED driving chip is connected with the light supplement lamp and is used for outputting a voltage signal and a current signal to the light supplement lamp based on the pulse width modulation signal.

7. The light control device according to claim 5, wherein The UART-to-RS485 chip is connected with the light sensor and is used for converting the UART signal into an RS485 signal and outputting the RS485 signal to the light sensor.

8. A drone landing control system, characterized by, The system comprises a UAV, a UAV warehouse and the light control device according to any one of claims 1 to 7. The UAV warehouse is provided with a landing QR code, and the landing QR code is used for identifying a landing position by the UAV. The UAV comprises an on-board camera and a visual navigation device, and the on-board camera and the visual navigation device are connected.

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