Unmanned aerial vehicle navigation light control circuit and method

Abstract

The invention provides an unmanned aerial vehicle navigation light control circuit and method, the circuit comprises a control unit and a navigation light unit, and the navigation light unit comprises a plurality of navigation lights; and the control unit is used for controlling the brightness and the flickering frequency of the navigation lamp. According to the industrial-grade unmanned aerial vehicle navigation light control circuit and method provided by the invention, flexible setting of the flashing frequency of the navigation light can be realized, and the brightness of the navigation light can be controlled to reduce the heat productivity.

Description

Technical Field

[0001] The present invention belongs to the field of unmanned aerial vehicles, and in particular, relates to a navigation light control circuit and method for unmanned aerial vehicles. Background Art

[0002] Traditional industrial drone navigation lights mostly use full-power strobes to achieve the standard flashing requirements of aircraft navigation lights. The lamp beads heat up severely, which can easily cause the solder to melt and fall off, and the lifespan is short. Traditional industrial drone navigation lights do not have brightness adjustment. The brightness is the same during the day and night, in the air and on the ground. It is difficult to adjust the flashing frequency and brightness at the same time. Summary of the invention

[0003] The embodiments of the present application provide a circuit and method for controlling a navigation light of a UAV, which can realize both the control of the flashing frequency and the adjustment of the brightness.

[0004] In a first aspect, an embodiment of the present application provides a drone navigation light control circuit, comprising: a control unit and a navigation light unit, wherein the navigation light unit comprises a plurality of navigation lights; the control unit is used to control the brightness and flashing frequency of the navigation lights.

[0005] The control unit includes a resistor R4, one end of which is connected to the control signal input end, the other end of which is connected to one end of the resistor R5 and the gate of the transistor Q2, the other end of the resistor R5 and the source of the transistor Q2 are both grounded, the drain of the transistor Q2 is connected to one end of the resistor R2 and the cathode of the diode D2, the other end of the resistor R2 and the anode of the diode D2 are both connected to the gate of the transistor Q1, the gate of the transistor Q1 is also connected to one end of the resistor R1 and one end of the bidirectional transient voltage suppression diode D1, the other end of the resistor R1 and the other end of the bidirectional transient voltage suppression diode D1 are connected to the source of the transistor Q1, the source of the transistor Q1 is also connected to the power supply VCC, and the drain of the transistor Q1 is connected to the output end VCC OUT.

[0006] The navigation light unit includes a resistor R3 and a plurality of light emitting diodes connected in series, and the resistor R3 is connected in parallel with the light emitting diodes.

[0007] In a second aspect, an embodiment of the present application provides a method for controlling a drone navigation light, which is applied to any of the above-mentioned drone navigation light control circuits, including: a control unit controls the brightness and flashing frequency of the navigation light by adjusting the frequency and duty cycle of the signal.

[0008] In a third aspect, an embodiment of the present application provides a drone, comprising the drone navigation light control circuit described in any one of the above items.

[0009] The drone navigation light control circuit and method of the present application embodiment have the following beneficial effects:

[0010] The present application proposes an industrial-grade UAV navigation light control circuit and method, which can not only realize the flexible setting of the navigation light flashing frequency, but also control the brightness of the navigation light to reduce heat generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the drone navigation light control circuit in the embodiment of the present application;

[0012] Figure 2 This is a circuit diagram of the drone navigation light control circuit of the embodiment of the present application;

[0013] Figure 3 This is a control level diagram of the drone navigation light control circuit PC1 according to an embodiment of the present application;

[0014] Figure 4 This is a schematic diagram of the second frequency band in the high level area within the first frequency band of the drone navigation light control circuit in the embodiment of the present application;

[0015] Figure 5 This is a schematic diagram of lighting the navigation lights in the drone navigation light control circuit according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0017] In the following introduction, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present invention, and different embodiments can be replaced or combined, so this application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then this application should also be considered to include embodiments containing one or more of all other possible combinations of features A, B, C, and D, even though the embodiment may not be clearly recorded in the following text.

[0018] like Figure 1 As shown, the drone navigation light control circuit of the present application includes: a control unit 10 and a navigation light unit 20, the navigation light unit 20 includes a plurality of navigation lights; the control unit 10 is used to control the brightness and flashing frequency of the navigation lights.

[0019] like Figure 1-2As shown, the control unit 10 includes a resistor R4, one end of which is connected to the control signal input terminal, the other end of which is connected to one end of the resistor R5 and the gate of the transistor Q2, the other end of the resistor R5 and the source of the transistor Q2 are both grounded, the drain of the transistor Q2 is connected to one end of the resistor R2 and the cathode of the diode D2, the other end of the resistor R2 and the anode of the diode D2 are both connected to the gate of the transistor Q1, the gate of the transistor Q1 is also connected to one end of the resistor R1 and one end of the bidirectional transient voltage suppression diode D1, the other end of the resistor R1 and the other end of the bidirectional transient voltage suppression diode D1 are connected to the source of the transistor Q1, the source of the transistor Q1 is also connected to the power supply VCC, and the drain of the transistor Q1 is connected to the output terminal VCC_OUT. The navigation light unit includes a resistor R3 and a plurality of light-emitting diodes connected in series, and the resistor R3 is connected in parallel with the light-emitting diodes.

[0020] like Figure 2 As shown in the figure, this circuit is a navigation light control circuit. D3 and D4 are navigation lights, and multiple navigation lights can be connected in series and parallel. D1 is a bidirectional TVS (Transient Voltage Suppressor (transient voltage suppression diode) device is used to absorb the surge of the power supply voltage VCC; PC1 is the control signal input terminal, Q1 is a PMOS (P-Metal-Oxide-Semiconductor) device, and Q2 is an NMOS (N-Metal-Oxide-Semiconductor) device. When PC1 outputs a high level, R4 and R5 divide the voltage so that the gate-source of Q2 is a positive voltage to drive the drain-source of Q2 to turn on, and divide the voltage of R1 and R2 so that the gate-source of Q1 is a negative voltage to drive the drain-source of Q1 to turn on, thereby lighting up the navigation lights D3 and D4; when PC1 outputs a low level, transistors Q2 and Q1 do not work, so that the navigation lights D3 and D4 are extinguished; diode D2, resistor R2, and resistor R3 are used to quickly absorb the energy of the navigation lights and transistor Q1 when the navigation lights are extinguished, so as to achieve the purpose of rapid shutdown.

[0021] like Figure 3 As shown, Figure 2 The control level of PC1, T1 is the first frequency band period, t1 is the high level time in the first frequency band period, the duty cycle of the first frequency band D1 = t1 / T1, and the frequency of the first frequency band f1 = 1 / T1;

[0022] like Figure 4 As shown, Figure 3 Among ①②③④, the second frequency band within the high level area within the first frequency band, T2 is the second frequency band period, t2 is the high level time within the second frequency band period, the duty cycle of the second frequency band D2=t2 / T2, and the frequency of the second frequency band f2=1 / T2.

[0023] f1 is generally a low frequency, and the lighting cycle of the navigation light can be controlled by adjusting f1 and D1; f2 is generally a higher frequency, and the brightness of the navigation light can be controlled by adjusting f2 and D2. Figure 5 As shown, f1 is 0.5Hz, D1 is 50%, f2 is 50Hz, D2 is 0% in area ②, and D2 is 50% in areas ①③④. The navigation light can be turned on for 1 second, off for 1 second, on for 1 second, off for 3 seconds.

[0024] In addition, by controlling the high and low level time of PC1 to adjust the duty cycle D2 of the second frequency band, the brightness of the navigation lights can be controlled. For example, D2 can be increased during the day and decreased at night, or D2 can be increased in the air and decreased on the ground. This can not only achieve the brightness prompt function of the navigation lights, but also reduce heat and energy consumption.

[0025] This application proposes an industrial-grade UAV navigation light control method, which adopts dual-frequency control. The first frequency controls the flashing frequency of the navigation light, and the second frequency duty cycle controls the brightness of the navigation light. It can not only realize the flexible setting of the flashing frequency of the navigation light, but also control the brightness of the navigation light to reduce heat generation.

[0026] The present application also provides a method for controlling a drone navigation light, which is applied to any of the above-mentioned drone navigation light control circuits, including: a control unit controls the brightness and flashing frequency of the navigation light by adjusting the frequency and duty cycle of the signal.

[0027] In the present application, the drone navigation light control method embodiment is basically similar to the drone navigation light control circuit embodiment. For related matters, please refer to the introduction of the drone navigation light control circuit embodiment.

[0028] The present application also provides a drone, comprising any of the drone navigation light control circuits described above.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drone navigation light control circuit, characterized in that: include: A control unit and a navigation light unit, wherein the navigation light unit comprises a plurality of navigation lights; the control unit is used to control the brightness and flashing frequency of the navigation lights.

2. The UAV navigation light control circuit according to claim 1 is characterized in that: The control unit includes a resistor R4, one end of which is connected to the control signal input end, the other end of which is connected to one end of a resistor R5 and a gate of a transistor Q2, the other end of which is connected to a ground, the drain of the transistor Q2 is connected to one end of the resistor R2 and a cathode of a diode D2, the other end of which is connected to an anode of the diode D2 and a gate of the transistor Q1, the gate of the transistor Q1 is also connected to one end of the resistor R1 and one end of a bidirectional transient voltage suppression diode D1, the other end of which is connected to a source of the transistor Q1, the source of the transistor Q1 is also connected to a power supply VCC, and the drain of the transistor Q1 is connected to an output end VCC_OUT.

3. The UAV navigation light control circuit according to claim 2 is characterized in that: The navigation light unit includes a resistor R3 and a plurality of light emitting diodes connected in series, and the resistor R3 is connected in parallel with the light emitting diodes.

4. A method for controlling a drone navigation light, characterized in that: The unmanned aerial vehicle navigation light control circuit applied to any one of claims 1-3 comprises: a control unit controls the brightness and flashing frequency of the navigation light by adjusting the frequency and duty cycle of the signal.

5. A drone, characterized in that: The invention comprises the unmanned aerial vehicle navigation light control circuit as described in any one of claims 1 to 3.

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