Unmanned aerial vehicle environment control module

Abstract

The invention provides an unmanned aerial vehicle environment control module, which comprises a control module, a temperature acquisition module and a heating and heat dissipation module, and is characterized in that the control module is connected with the temperature acquisition module and the heating and heat dissipation module; the temperature acquisition module is used for acquiring the internal temperatures of the battery, the airspeed tube and the fuselage and sending the acquired temperatures to the control module; the control module is used for receiving the temperature acquired by the temperature acquisition module and sending a control signal to the heating and heat dissipation module according to a temperature value; and the heating and radiating module is used for heating or radiating according to the control signal sent by the control module. The temperature in the whole fuselage of the unmanned aerial vehicle can be controlled, on one hand, a battery pack and an airspeed tube of the unmanned aerial vehicle are heated in winter and when a flight task is executed at a high altitude, on the other hand, heat dissipation is conducted on the interior of the fuselage of the unmanned aerial vehicle in summer, and the reliability of a high-power device is improved.

Description

Technical Field

[0001] The present invention belongs to the field of unmanned aerial vehicles, and in particular, relates to an environmental control module for unmanned aerial vehicles. Background Art

[0002] Medium and large drones usually perform missions in high-altitude areas, but as the altitude increases, the temperature will become lower and lower, which can easily cause the pitot tube to freeze, making the drone unable to fly normally. When medium and large drones fly in winter, their endurance will be greatly reduced because the battery's charging and discharging capabilities decrease in low-temperature environments. When flying in summer, the reliability of some high-power devices in the front or rear cabin of medium and large drones will be greatly reduced due to the high external temperature and their own heat, and some unpredictable accidents or failures may occur. Current drones only heat the battery pack or pitot tube separately, without considering the ambient temperature control inside the entire fuselage. Summary of the invention

[0003] The embodiment of the present application provides a drone environmental control module that can control the temperature inside the entire fuselage. On the one hand, it heats the battery pack and pitot tube of the drone in winter and when performing flight missions at high altitudes. On the other hand, it dissipates heat inside the drone fuselage in summer to improve the reliability of high-power devices.

[0004] In a first aspect, an embodiment of the present application provides a drone environmental control module, including:

[0005] A control module, a temperature acquisition module and a heating and cooling module, wherein the control module is connected to the temperature acquisition module and the heating and cooling module respectively; the temperature acquisition module is used to acquire the temperature of the battery, the pitot tube and the internal temperature of the fuselage, and send the acquired temperature to the control module; the control module is used to receive the temperature acquired by the temperature acquisition module, and send a control signal to the heating and cooling module according to the temperature value; the heating and cooling module is used to perform heating or cooling according to the control signal sent by the control module.

[0006] Among them, it also includes a power supply module, which includes an anti-reverse connection diode and a transient suppression diode, and supplies power to the control module through a step-down chip.

[0007] Among them, the control module includes a single-chip microcomputer, which is used to analyze and process the data of the temperature acquisition module into CAN or serial port data, and send it to the main control board of the drone; the control module is also used to send instructions to control the operation of the heating and cooling module.

[0008] Wherein, the control module exchanges information with the main control board via the CAN communication module or the serial communication module.

[0009] Among them, the heating and heat dissipation module includes a MOS tube driving chip and a MOS tube Q1. The MOS tube driving chip is used to control the on and off of the MOS tube Q1. The MOS tube Q1 controls the power output of the terminal J1, and the J1 terminal is connected to the heating and heat dissipation load; the heating and heat dissipation module is connected to the heating port of the battery, the heating port of the pitot tube and the radiator port.

[0010] The heating and cooling module further includes a voltage detection circuit, which includes a diode D21, a capacitor C86, a resistor R140, and a resistor R141. The voltage detection circuit is used to detect whether there is a voltage output at the J1 terminal.

[0011] Wherein, the temperature acquisition module includes a thermistor, and the temperature acquisition module sends a voltage that changes linearly with temperature to the control module, and the control module converts the voltage into a temperature value.

[0012] In a second aspect, the present application provides a drone, comprising any of the drone environmental control modules described above.

[0013] The drone environmental control module of the present application embodiment has the following beneficial effects:

[0014] The present application can control the temperature inside the entire fuselage of the drone. On the one hand, it can heat the battery pack and pitot tube of the drone in winter and when performing flight missions at high altitudes. On the other hand, it can dissipate heat inside the drone fuselage in summer, thereby improving the reliability of high-power devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the drone environmental control module in this application embodiment. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the drone environmental control module in this application embodiment. Figure 2 ;

[0017] Figure 3a The power module principle in the embodiment of this application Figure 1 ;

[0018] Figure 3b The power module principle in the embodiment of this application Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the control module in the embodiment of the present application;

[0020] Figure 5a The heating and cooling module principle in the embodiment of this application Figure 1 ;

[0021] Figure 5bThe heating and cooling module principle in the embodiment of this application Figure 2 ;

[0022] Figure 5c This is the third schematic diagram of the heating and heat dissipation module in the embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of the temperature acquisition module in the embodiment of this application. DETAILED DESCRIPTION

[0024] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] 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.

[0026] like Figure 1 As shown, the environmental control module of the drone of the present application includes: a control module 10, a temperature acquisition module 30 and a heating and cooling module 20, and the control module 10 is connected to the temperature acquisition module 30 and the heating and cooling module 20 respectively; the temperature acquisition module 30 is used to collect the temperature of the battery, the pitot tube and the internal temperature of the fuselage, and send the collected temperature to the control module 10; the control module 10 is used to receive the temperature collected by the temperature acquisition module 30, and send a control signal to the heating and cooling module 20 according to the temperature value; the heating and cooling module 20 is used to heat or dissipate heat according to the control signal sent by the control module 10.

[0027] like Figure 1-Figure 2 As shown, in some embodiments, the environmental control module of the drone of the present application includes a power module, a control module, a CAN communication module, a serial communication module, a temperature acquisition module and a heating and cooling module. When working, the battery is connected to the power module, the heating port of the battery, the heating port of the pitot tube and the radiator port are connected to the heating and cooling module, the temperature acquisition module monitors the temperature of the battery, the pitot tube and the internal temperature of the fuselage, and then sends the collected temperature to the control module, and the internal program of the control module determines whether the current temperature needs heating or cooling, and sends a signal to the heating and cooling module to perform heating / cooling.

[0028] like Figure 3a-Figure 3bAs shown, J2 in the power module is the power input port, and D1 is an anti-reverse diode to prevent the positive and negative poles of the power supply from being reversed. D3 is a transient suppression diode, which mainly absorbs external surge voltage to protect the circuit. U3 (TPS54560) is a DC-DC power chip, and the network composed of it and the peripheral resistors, capacitors, and inductors is mainly used to reduce the input voltage to 5V. U5 is an AMS1117 linear regulator, which is used to reduce 5V to 3.3V, which is used to power the microcontroller of the control module.

[0029] like Figure 4 As shown, the control module includes a single chip microcomputer, which is used to analyze and process the data of the temperature acquisition module into CAN or serial port data, and then send it to the main control board through the CAN communication module or the serial port communication module. At the same time, it also sends instructions to control the operation of the heating and cooling module.

[0030] like Figure 5a-5c As shown, in the heating and cooling module, U6 is a MOS (Metal-Oxide-Semiconductor) tube driver chip, which controls the on and off of the MOS tube Q1 by receiving instructions sent by the control module. The MOS tube Q1 controls the power output of the terminal J1, and the J1 terminal is connected to the heating load or the cooling load. The voltage detection circuit composed of the diode D21, the capacitor C86, the resistor R140, and the resistor R141 is used to detect whether there is a voltage output at the J1 terminal. The heating and cooling module can be composed of multiple circuits, which heat the battery and the airspeed tube and dissipate the heat of the internal power devices respectively.

[0031] like Figure 6 As shown, in the temperature acquisition module, U25 is a voltage reference chip, which is used to reduce the 5V voltage to 3.3V and stabilize it at 3.3V without fluctuations. The P1 terminal is connected to the NTC thermistor, which changes linearly with temperature. It forms a voltage divider circuit with resistor R73, so the voltage at NTC1 changes linearly with temperature and feeds the voltage back to the microcontroller of the control module, which converts the voltage into a temperature value.

[0032] In this application, the CAN communication module includes a CAN transceiver, which is used to convert the logic level of the microcontroller into a CAN differential signal to improve the signal quality, propagation rate and distance. The serial communication module includes an RS232 chip, which is used to convert the TTL level of the microcontroller into an RS232 level. The CAN communication and serial communication modules can realize communication with the main control board, and the communication module is selected according to the requirements.

[0033] The present application solves the problem of pitot tube icing during high-altitude flight of medium and large UAVs, increases the flight time of medium and large UAVs in winter, solves the heat dissipation problem of high-power devices inside medium and large UAVs, and realizes intelligent control of the internal ambient temperature of medium and large UAVs.

[0034] The present application also provides a drone, comprising any of the above-mentioned drone environmental control modules.

[0035] 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 environmental control module, characterized in that: include: A control module, a temperature acquisition module and a heating and cooling module, wherein the control module is connected to the temperature acquisition module and the heating and cooling module respectively; the temperature acquisition module is used to acquire the temperature of the battery, the pitot tube and the internal temperature of the fuselage, and send the acquired temperature to the control module; the control module is used to receive the temperature acquired by the temperature acquisition module, and send a control signal to the heating and cooling module according to the temperature value; the heating and cooling module is used to perform heating or cooling according to the control signal sent by the control module.

2. The drone environmental control module according to claim 1, characterized in that: It also includes a power supply module, which includes an anti-reverse connection diode and a transient suppression diode, and supplies power to the control module through a step-down chip.

3. The drone environmental control module according to claim 1 or 2, characterized in that: The control module includes a single-chip microcomputer, which is used to analyze and process the data of the temperature acquisition module into CAN or serial port data and send it to the main control board of the drone; the control module is also used to send instructions to control the operation of the heating and cooling module.

4. The drone environmental control module according to claim 3, characterized in that: The control module exchanges information with the main control board via the CAN communication module or the serial communication module.

5. The drone environmental control module according to any one of claims 1 to 3, characterized in that: The heating and heat dissipation module includes a MOS tube driving chip and a MOS tube Q1. The MOS tube driving chip is used to control the on and off of the MOS tube Q1. The MOS tube Q1 controls the power output of the terminal J1. The J1 terminal is connected to the heating and heat dissipation load. The heating and heat dissipation module is connected to the heating port of the battery, the heating port of the pitot tube and the radiator port.

6. The drone environmental control module according to claim 5, characterized in that: The heating and cooling module also includes a voltage detection circuit, which includes a diode D21, a capacitor C86, a resistor R140, and a resistor R141. The voltage detection circuit is used to detect whether there is a voltage output at the J1 terminal.

7. The UAV environmental control module according to any one of claims 1 to 3, characterized in that: The temperature acquisition module includes a thermistor. The temperature acquisition module sends a voltage that changes linearly with temperature to the control module, and the control module converts the voltage into a temperature value.

8. A drone, characterized in that: It comprises the UAV environmental control module as described in any one of claims 1 to 7.

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