Unmanned aerial vehicle power management method, device and system based on thermal stealth material

Abstract

The invention discloses an unmanned aerial vehicle power management method, device and system based on a thermal stealth material. The method comprises the following steps: calculating the real-time power demand of each functional system; calculating power resource allocation; performing optimization correction based on an adjustment function; and finally, the task efficiency and endurance time of the unmanned aerial vehicle are maximized. The method provided by the invention comprehensively considers the power demand difference of each functional system when the unmanned aerial vehicle executes different tasks, fully considers the influence of the external environment on the power demand, and considers that the endurance time of the unmanned aerial vehicle may be greatly reduced due to insufficient power management under a high-load task, and the power consumption of the unmanned aerial vehicle is reduced. And calculation is convenient, parameters are convenient to measure or estimate, electric power resource distribution of all systems of the unmanned aerial vehicle can be rapidly carried out, and technical guarantee is provided for safe work of the unmanned aerial vehicle, energy conservation and improvement of the service life and the working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power management for unmanned aerial vehicles (UAVs) based on thermal stealth materials, and in particular to a power management method, device and system for unmanned aerial vehicles (UAVs) based on thermal stealth materials. Background Art

[0002] Unmanned aerial vehicles (UAVs) play an important role in modern military and civilian reconnaissance and logistics distribution. With the rapid development of UAV technology, the requirements for its endurance and mission efficiency are getting higher and higher. At present, the power management system of UAVs generally has the following problems: the power requirements of UAVs for various functional systems vary greatly at different mission stages, and the traditional static power allocation method cannot meet the real-time dynamic needs, resulting in a waste of power resources. Existing power management systems usually fail to fully consider the impact of the external environment (such as temperature, wind speed, etc.) on power demand and cannot effectively adjust power distribution. Under high-load tasks, insufficient power management often leads to a significant decrease in the endurance of UAVs, affecting the execution of their missions.

[0003] Therefore, proposing an effective power management method to solve the problems existing in the prior art has important theoretical value and practical application significance. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a UAV power management method based on thermal stealth materials, which can improve the energy efficiency and endurance of the UAV by real-time dynamic power distribution to meet the mission requirements in complex environments.

[0005] Technical solution: To solve the above technical problems, the technical solution adopted by the present invention is: A power management method for a UAV based on thermal stealth materials, wherein the UAV includes several functional systems; The power management method distributes energy to each functional system according to the real-time power demand of each functional system; specifically:

[0006] In the formula, E i (t) is the energy allocated to the i-th functional system at time t, P i (t) is the power demand of the i-th functional system at time t, E total is the total available energy of the UAV power supply, and n is the number of functional systems.

[0007] Preferably, the real-time power demand is calculated as follows: P i (t) = a i (t)• U i (t)• I i (t) In the formula, a i (t) is the task weight coefficient of the i-th functional system at time t, U i (t) is the working voltage of the i-th functional system at time t, I i (t) is the instantaneous current of the i-th functional system at time t.

[0008] Preferably, the power management method further includes: Design correction functions to correct the real-time power requirements of each functional system and adjust the energy allocation results; The correction function is:

[0009] In the formula, ΔT represents the temperature difference between the functional system of the thermal stealth material and the external environment of the UAV, T represents the external environment temperature, V represents the wind speed, and S represents the flight state of the UAV; β, α1, α2, γ1, and γ2 are all correction parameters; The corrected real-time power demand is: P i adj (t) = P i (t)•f(S,T,V) Where P i adj (t) is the power demand of the i-th functional system at time t after correction.

[0010] Preferably, the adjusted energy distribution result is:

[0011] In the formula, E i adj (t) is the energy allocated to the i-th functional system at time t after adjustment.

[0012] Preferably, .

[0013] Preferably, β∈[0.05,0.2],α1∈[0.01,0.05],α2∈[0.01,0.1],γ1∈[0,0.2],γ2∈[1,2].

[0014] Furthermore, a UAV power management device based on thermal stealth material is also used, comprising: Power demand calculation module, used to calculate the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the real-time power demand of each functional system.

[0015] Preferably, it also includes a power correction unit for correcting the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the correction result of the real-time power demand of each functional system.

[0016] Furthermore, a computer-readable storage medium storing one or more programs is also used. The one or more programs include instructions. When the instructions are executed by a computing device, the computing device performs the method as described above.

[0017] Furthermore, an electronic system is also adopted, including one or more processors, one or more memories and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs include instructions for executing the method as described above.

[0018] Beneficial effects: The UAV power management method proposed in the present invention can effectively solve the problems of unbalanced energy consumption, insufficient environmental adaptability and limited flight time in the existing UAV power management system. By adjusting and correcting power distribution in real time, the energy efficiency and mission execution capability of UAVs in complex environments are improved, providing technical support for the widespread application of UAVs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a flow chart of a method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the content of the present invention clearer, the present invention is described in detail below in conjunction with specific embodiments.

[0021] Engineering example: Assume that a drone is performing a reconnaissance mission and must balance the power and energy requirements of each subsystem in a complex environment to maximize the flight time. The drone is equipped with the following functional systems: Flight control subsystem: responsible for maintaining the flight attitude and trajectory of the drone.

[0022] Sensor and monitoring subsystem: includes cameras and infrared sensors for real-time reconnaissance and data collection.

[0023] Communication and data transmission subsystem: used for data transmission and communication with the ground station.

[0024] Thermal stealth material subsystem: used to regulate the infrared radiation of the drone to ensure it has thermal stealth function.

[0025] Mission payload subsystem: carries other payloads (such as weapons or special equipment).

[0026] Cooling subsystem: used to maintain the temperature of the drone's electronic equipment.

[0027] Emergency subsystem: used to send out positioning signals in emergency situations.

[0028] The following will use the UAV power management method based on thermal stealth materials proposed by the present invention to distribute energy to the above subsystems: (1) Calculate the real-time power requirements of each functional system When the UAV is performing a mission, the real-time power demand of each system changes according to the complexity of the mission and environmental conditions. When the UAV performs a reconnaissance mission, the sensor and monitoring system, the communication and data transmission system, and the electro-optical regulation system of the thermal stealth material have higher priority. The priority coefficients of power allocation of each system are: Flight control system: a1(t)=0.8 Sensor and monitoring system: a2(t)=1.2 Communication and data transmission systems: a3(t)=1.0 Electro-optical regulation system of thermal stealth material: a4(t)=0.9 Mission payload system: carrying other payloads: a5(t)=0.6 Cooling system: a6(t)=0.5 Emergency system: a7(t)=0.4.

[0029] The real-time power demand of each system can be obtained from the designed calculation formula as shown below: Flight control system: P1(t)=40W Sensor and monitoring system: P2(t)=30W Communication and data transmission system: P3(t)=20W Electro-optical regulation system of thermal stealth material: P4(t)=15W Mission payload system: carrying other payloads: P5(t)=25W Cooling system: P6(t)=10W Emergency system: P7(t)=5W.

[0030] (2) Energy distribution calculation E total =2000Wh Using the designed formula to distribute energy, the energy distribution results of each subsystem are as follows: Flight control system: E1(t)=40 / 145•2000=552Wh Sensor and monitoring system: E2(t)=30 / 145•2000=414Wh Communication and data transmission system: E3(t)=20 / 145•2000=276Wh Electro-optical regulation system of thermal stealth material: E4(t)=15 / 145•2000=207Wh Mission payload system: carrying other payloads: E5(t)=25 / 145•2000=345Wh Cooling system: E6(t)=10 / 145•2000=138Wh Emergency system: E7(t)=5 / 145•2000=69Wh.

[0031] (3) Adjustment function to correct system power calculation: In this embodiment, the UAV performs a reconnaissance mission, the external temperature is T = 35 ° C, and the wind speed is 5m / s. The flight state is high-speed cruising mode, S is 5, β = 0.1, α1 = 0.02, γ1 = 0.1, α2 = 0.05, γ2 = 1.5. The real-time power demand of each subsystem is corrected by the correction function, and the correction function is: Therefore, the real-time power demand of each subsystem is dynamically adjusted. For example, the adjusted power demand of the flight control system is: P i adj (t)=40•0.9726=38.904Wh.

[0032] By correcting the function, the energy distribution of each subsystem is recalculated according to the energy distribution formula to ensure that the UAV's flight time is maximized while maintaining the mission execution effect.

[0033] Through the power management method provided by the present invention, the UAV can reasonably adjust power distribution in a complex environment to ensure efficient completion of the task and extend the flight time.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the use. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the use methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

[0035] The present invention also provides a UAV power management device based on thermal stealth material, comprising: Power demand calculation module, used to calculate the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the real-time power demand of each functional system.

[0036] Furthermore, it also includes a power correction unit for correcting the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the correction result of the real-time power demand of each functional system.

[0037] The technical solution of the above-mentioned UAV power management device is similar to the technical solution of the above-mentioned UAV power management method, which will not be repeated here.

[0038] Based on the same technical solution, the present invention also provides a computer-readable storage medium storing one or more programs, wherein the one or more programs include instructions, characterized in that when the instructions are executed by a computing device, the computing device executes the drone power management method as described above.

[0039] Based on the same technical solution, the present invention also provides an electronic system, comprising one or more processors, one or more memories and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs include instructions for executing the drone power management method as described above.

[0040] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0041] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0042] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0043] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

Claims

1. A UAV power management method based on thermal stealth materials, characterized in that: The drone includes several functional systems; The power management method distributes energy to each functional system according to the real-time power demand of each functional system; specifically: , where E i (t) is the energy allocated to the i-th functional system at time t, P i (t) is the power demand of the i-th functional system at time t, E total is the total available energy of the UAV power supply, and n is the number of functional systems.

2. The UAV power management method based on thermal stealth material according to claim 1 is characterized in that: The calculation method of the real-time power demand is: P i (t) = a i (t)• U i (t)• I i (t), where a i (t) is the task weight coefficient of the i-th functional system at time t, U i (t) is the working voltage of the i-th functional system at time t, I i (t) is the instantaneous current of the i-th functional system at time t.

3. The UAV power management method based on thermal stealth material according to claim 1 is characterized in that: The power management method further includes: Design correction functions to correct the real-time power requirements of each functional system and adjust the energy allocation results; The correction function is: , where ΔT represents the temperature difference between the functional system of the thermal stealth material and the external environment of the UAV, T represents the external environment temperature, V represents the wind speed, and S represents the flight state of the UAV; β, α1, α2, γ1, and γ2 are all correction parameters; The corrected real-time power demand is: P i adj (t) = P i (t)•f(S,T,V), where P i adj (t) is the power demand of the i-th functional system at time t after correction.

4. The UAV power management method based on thermal stealth material according to claim 3 is characterized in that: The adjusted energy distribution result is: , where E i adj (t) is the energy allocated to the i-th functional system at time t after adjustment.

5. The UAV power management method based on thermal stealth material according to claim 3 is characterized in that: 。 6. The UAV power management method based on thermal stealth material according to claim 3 is characterized in that: β∈[0.05,0.2],α1∈[0.01,0.05],α2∈[0.01,0.1],γ1∈[0,0.2],γ2∈[1,2].

7. UAV power management device based on thermal stealth material, characterized in that: include: Power demand calculation module, used to calculate the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the real-time power demand of each functional system.

8. The UAV power management device based on thermal stealth material according to claim 7 is characterized in that: It also includes a power correction unit for correcting the real-time power demand of each functional system; The energy allocation module is used to calculate the energy allocated to each functional system according to the correction result of the real-time power demand of each functional system.

9. A computer-readable storage medium storing one or more programs, wherein the one or more programs include instructions, characterized in that: When the instructions are executed by a computing device, the computing device is caused to perform the method according to any one of claims 1 to 6.

10. An electronic system, characterized in that: The method comprises one or more processors, one or more memories and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs include instructions for executing the method as claimed in any one of claims 1 to 6.

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