Unmanned aerial vehicle control circuit and unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle control circuit and an unmanned aerial vehicle. The unmanned aerial vehicle control circuit comprises a first power supply, a second power supply, a voltage reduction module and a power supply control module. The output end of the first power supply is electrically connected with unmanned aerial vehicle load equipment based on the voltage reduction module, and the first power supply, the voltage reduction module and the unmanned aerial vehicle load equipment form a first power supply circuit; the output end of the second power supply is electrically connected with an unmanned aerial vehicle load device based on the power supply control module and the voltage reduction module. The second power supply, the power supply control module, the voltage reduction module and the unmanned aerial vehicle load device form a second power supply circuit. By arranging the first power supply and the second power supply, the power supply can be switched according to the actual operation condition of the unmanned aerial vehicle to improve the power supply reliability and safety of the operation of the unmanned aerial vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, and in particular to a unmanned aerial vehicle control circuit and an unmanned aerial vehicle. Background Art

[0002] With the development of drone technology, existing drones are widely used in civil fields such as aerial photography, transportation, and rescue. The current usage scenarios have high requirements on the drone's battery life and operational reliability, but existing drones generally use a single battery mode. During operation, battery failure is prone to affect the normal operation of the drone, affecting the reliability and safety of the drone's operation. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides a drone control circuit and a drone. By setting a first power supply and a second power supply, the power supply can be switched according to the actual operation of the drone to improve the power supply reliability and safety of the drone operation.

[0004] The utility model provides a UAV control circuit, which comprises: a first power supply, a second power supply, a voltage reduction module and a power supply control module;

[0005] The output end of the first power supply is electrically connected to the drone payload device based on the voltage reduction module, and the first power supply, the voltage reduction module and the drone payload device form a first power supply circuit;

[0006] The output end of the second power supply is electrically connected to the drone payload device based on the power control module and the voltage reduction module, and the second power supply, the power control module, the voltage reduction module and the drone payload device form a second power supply circuit.

[0007] Furthermore, the drone control circuit also includes a battery management module, and the first power supply is electrically connected to the second power supply based on the battery management module.

[0008] Furthermore, a first diode is arranged between the battery management module and the second power supply, the positive pole of the first power supply is connected to the battery management module, the output end of the battery management module is connected to the first diode, and the negative pole of the first diode is connected to the positive pole of the second power supply.

[0009] Furthermore, the first power supply, the battery management module, the first diode and the second power supply form a power supply supplement circuit.

[0010] Furthermore, a second diode is provided between the first power supply and the step-down module, the positive electrode of the first power supply is connected to the second diode, and the negative electrode of the second diode is connected to the input end of the step-down module.

[0011] Further, the power control module includes: a comparator, a first resistor and a second resistor;

[0012] The positive electrode of the second power supply is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is grounded;

[0013] A common end of the first resistor and the second resistor is connected to a negative input end of the comparator, and a positive electrode of the first power supply is connected to a positive input end of the comparator.

[0014] Furthermore, the power control module also includes a third resistor, the output end of the comparator is connected to one end of the third resistor, and the other end of the third resistor is connected to the positive electrode of the second power supply.

[0015] Furthermore, the power control module further includes a shunt control switch, and the shunt control switch is provided with a PMOS tube;

[0016] The positive terminal of the second power supply is connected to the D pole of the shunt control switch, the output terminal of the comparator is connected to the G pole of the shunt control switch, and the S pole of the shunt control switch is connected to the buck module.

[0017] The utility model also provides an unmanned aerial vehicle, wherein the unmanned aerial vehicle is provided with the unmanned aerial vehicle control circuit, and the unmanned aerial vehicle comprises a main control module, and the main control module is electrically connected to the unmanned aerial vehicle control circuit.

[0018] Furthermore, the UAV also includes a wireless communication module, and the UAV is communicatively connected with a ground workstation based on the wireless communication module.

[0019] The utility model provides a UAV control circuit and a UAV, which form a first power supply circuit by setting a first power supply and a step-down module to meet the daily use needs of the UAV, and form a second power supply circuit by setting a second power supply, a power supply control module and a step-down module to detect the output state of the first power supply based on the power supply control module, and can switch the second power supply circuit according to the actual operation situation, thereby improving the power supply reliability and safety of the UAV operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of a UAV control circuit in an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the key module structure of the UAV in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] Figure 1 A schematic diagram of a UAV control circuit in an embodiment of the utility model is shown, and the UAV control circuit includes: a first power supply 1, a second power supply 2, a step-down module 3 and a power control module 4; the output end of the first power supply 1 is electrically connected to the UAV load device based on the step-down module 3, and the first power supply 1, the step-down module 3 and the UAV load device form a first power supply circuit. Based on the first power supply circuit, the first power supply 1 can provide power support to the UAV to meet the unmanned operation requirements.

[0026] Specifically, the output end of the second power supply 2 is electrically connected to the UAV load device based on the power control module 4 and the step-down module 3. The second power supply 2, the power control module 4, the step-down module 3 and the UAV load device form a second power supply circuit. Based on the second power supply circuit, the second power supply 2 can provide power support to the UAV. When the first power supply circuit fails, or the supply voltage of the first power supply circuit cannot meet the operation requirements of the UAV, the UAV control circuit can switch the second power supply circuit to perform power supply operation, and the operation requirements of the UAV can be met through the second power supply 2.

[0027] Specifically, the drone control circuit also includes a battery management module 7. The first power supply 1 is electrically connected to the second power supply 2 based on the battery management module 7. The battery management module 7 is used to detect the voltage state of the second power supply 2 so as to adjust the output of the first power supply 1 to meet the charging requirements of the second power supply 2.

[0028] Specifically, a first diode 5 is arranged between the battery management module 7 and the second power supply 2, the positive electrode of the first power supply 1 is connected to the battery management module 7, the output end of the battery management module 7 is connected to the first diode 5, the negative electrode of the first diode 5 is connected to the positive electrode of the second power supply 2, and the first diode 5 is used to limit the current transmission direction between the first power supply 1 and the second power supply 2 to prevent the voltage of the second power supply 2 from being backflowed to the battery management module 7.

[0029] Furthermore, the first power supply 1, the battery management module 7, the first diode 5 and the second power supply 2 form a power supply supplement circuit. Based on the detection of the voltage state of the second power supply 2 by the battery management module 7, when the voltage of the second power supply 2 is lower than a preset voltage value, the battery management module 7 can turn on the power supply supplement circuit, so that when the first power supply 1 meets the operation requirements of the drone, it can supplement the second power supply 2 with electric energy based on the power supply supplement circuit, so that the second power supply 2 can maintain a stable voltage so that the second power supply 2 can meet the operation requirements of the drone.

[0030] When the first power supply 1 is supplying power normally and the second power supply 2 is undervoltage, the battery management module 7 can turn on the power supply supplement circuit between the first power supply 1 and the second power supply 2, so that the first power supply 1 charges the second power supply 2 to make the second power supply 2 reach a fully charged or non-undervoltage state.

[0031] Specifically, a second diode 6 is arranged between the first power supply 1 and the step-down module 3, the positive electrode of the first power supply 1 is connected to the second diode 6, the negative electrode of the second diode 6 is connected to the input end of the step-down module 3, and the positive end of the second power supply 2 is connected between the second diode 6 and the step-down module 3. Based on the second diode 6, the current transmission direction of the positive end wiring of the first power supply 1 can be limited to prevent the voltage of the second power supply 2 from being fed back to the first power supply 1, thereby ensuring that the drone control circuit can operate normally.

[0032] Specifically, the power control module 4 includes: a comparator 41, a first resistor 43 and a second resistor 44; the positive electrode of the second power supply 2 is connected to one end of the first resistor 43, the other end of the first resistor 43 is connected to one end of the second resistor 44, and the other end of the second resistor 44 is grounded; the common end of the first resistor 43 and the second resistor 44 is connected to the negative input end of the comparator 41, the common end of the first resistor 43 and the second resistor 44 forms a voltage divider of the second power supply 2, and the positive electrode of the first power supply 1 is connected to the positive input end of the comparator 41, thereby realizing voltage comparison between the first power supply 1 and the second power supply 2.

[0033] Specifically, the power control module 4 also includes a third resistor 45, the output end of the comparator 41 is connected to one end of the third resistor 45, and the other end of the third resistor 45 is connected to the positive electrode of the second power supply 2. By setting the comparator 41, the output voltage of the first power supply 1 and the divided voltage of the second power supply 2 are compared, thereby realizing the detection of the operating status of the first power supply 1, so as to adjust the power supply circuit of the drone according to the operating status of the first power supply 1.

[0034] Specifically, the power control module 4 also includes a shunt control switch 42, which is provided with a PMOS tube. The positive end of the second power supply 2 is connected to the D pole of the shunt control switch 42, the output end of the comparator 41 is connected to the G pole of the shunt control switch 42, and the S pole of the shunt control switch 42 is connected to the step-down module 3.

[0035] The shunt control switch 42 is used to control the on / off state of the second power supply circuit where the second power supply 2 is located. The on / off state control of the shunt control switch 42 is realized based on the comparison result of the voltage division of the first power supply 1 and the second power supply 2 by the comparator 41.

[0036] Specifically, when the first power supply 1 is working normally, the voltage of the first power supply 1 is greater than the divided voltage of the second power supply 2, the comparator 41 outputs a high level, the S pole of the PMOS tube of the shunt control switch 42 is a high level, the shunt control switch 42 is in a closed state, the first power supply circuit is in a normal operating state, and the first power supply 1 realizes stable power supply based on the step-down module 3;

[0037] When an abnormality occurs in the first power supply 1, the voltage of the first power supply 1 is less than the divided voltage of the second power supply 2, and the comparator 41 outputs a low level, that is, the S pole of the PMOS tube of the shunt control switch 42 is at a low level, and the shunt control switch 42 is in the on state. The UAV control circuit automatically switches to the second power supply circuit, that is, the second power supply 2 realizes a stabilized power supply based on the step-down module 3.

[0038] Furthermore, based on the power control module 4, the control circuit of the UAV can maintain the regulated power supply of the first power supply 1, or switch to the regulated power supply of the second power supply 2 according to the operating status of the first power supply 1, which can meet the stable operation requirements of the UAV and improve the safety and reliability of the UAV operation.

[0039] The embodiment of the utility model provides a UAV control circuit, which sets a first power supply 1 and a second power supply 2. Based on a power control module 4, the power supply of the control circuit can be switched according to the power supply status of the UAV to meet the stable operation requirements of the UAV and improve the reliability and safety of the UAV operation.

[0040] Embodiment 2:

[0041] Figure 2 A schematic diagram of the key module structure of the drone in an embodiment of the utility model is shown, the drone is provided with the drone control circuit, the drone includes a main control module 10, the main control module 10 is electrically connected to the drone control circuit, the drone control circuit is provided with a fourth resistor 8 and a fifth resistor 9, the output end of the comparator 41 is connected to one end of the fourth resistor 8, the other end of the fourth resistor 8 is connected to one end of the second resistor 44, the other end of the fifth resistor 9 is grounded, and the common end of the fourth resistor 8 and the fifth resistor 9 is connected to the main control module 10, so that the main control module 10 can monitor the output state of the comparator 41 in real time. When it is detected that the output of the comparator 41 is reduced, the control circuit of the drone switches to the power supply state of the second power supply 2, and the main control module 10 can obtain and record the power switching information.

[0042] The UAV further includes a wireless communication module 40 , and the UAV is connected to a ground workstation through communication based on the wireless communication module 40 . The main control module 10 can send the power switching information to the ground workstation based on the wireless communication module 40 .

[0043] Specifically, when the first power supply 1 is under-voltage, the voltage at the positive input terminal of the comparator 41 will decrease. When the voltage at the positive input terminal of the comparator 41 is lower than the voltage at the negative input terminal, the output terminal of the comparator 41 will change from a high level to a low level, and the shunt control switch 42 will change from off to on. The second power supply 2 can continue to supply power to the key modules of the flight controller, thereby achieving the purpose of automatically switching the second power supply 2 to supply power when the first power supply 1 is under-voltage.

[0044] The output end of the comparator 41 is connected to the main control chip of the main control module 10. When the output end of the comparator 41 is at a low level, the input voltage of the main control chip of the main control module 10 is reduced, thereby triggering the flight controller interrupt program, and sending this information to the ground workstation through the wireless communication module 40, so that the drone can run to the ground workstation for maintenance by relevant staff.

[0045] Furthermore, the drone is also provided with a storage module 20 and a sensor module 30. The storage module 20 can record the working status data of the drone, and the sensor module 30 is used to identify the automatic obstacle avoidance and path recognition of the drone.

[0046] An embodiment of the utility model provides a drone, which is provided with a first power supply 1 and a second power supply 2. By real-time monitoring of the first power supply 1, when the first power supply 1 is undervoltage or fails, the power supply of the second power supply 2 can be quickly switched to ensure the normal operation of the drone, and the ground workstation can be fed back in time through the wireless communication module 40, thereby improving the convenience and reliability of drone maintenance.

[0047] In addition, the above embodiments of the present invention are introduced in detail. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A drone control circuit, characterized in that: The drone control circuit includes: a first power supply, a second power supply, a voltage reduction module and a power supply control module; The output end of the first power supply is electrically connected to the drone load device based on the voltage reduction module, and the first power supply, the voltage reduction module and the drone load device form a first power supply circuit; The output end of the second power supply is electrically connected to the drone payload device based on the power control module and the voltage reduction module, and the second power supply, the power control module, the voltage reduction module and the drone payload device form a second power supply circuit.

2. The drone control circuit according to claim 1, characterized in that: The drone control circuit also includes a battery management module, and the first power supply is electrically connected to the second power supply based on the battery management module.

3. The drone control circuit according to claim 2, characterized in that: A first diode is arranged between the battery management module and the second power supply, the positive electrode of the first power supply is connected to the battery management module, the output end of the battery management module is connected to the first diode, and the negative electrode of the first diode is connected to the positive electrode of the second power supply.

4. The drone control circuit according to claim 3, characterized in that: The first power source, the battery management module, the first diode and the second power source form a power supply supplement circuit.

5. The drone control circuit according to claim 1, characterized in that: A second diode is provided between the first power supply and the step-down module, the positive electrode of the first power supply is connected to the second diode, and the negative electrode of the second diode is connected to the input end of the step-down module.

6. The drone control circuit according to claim 1, characterized in that: The power control module includes: a comparator, a first resistor and a second resistor; The positive electrode of the second power supply is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is grounded; A common end of the first resistor and the second resistor is connected to a negative input end of the comparator, and a positive electrode of the first power supply is connected to a positive input end of the comparator.

7. The drone control circuit according to claim 6, characterized in that: The power control module further includes a third resistor, the output end of the comparator is connected to one end of the third resistor, and the other end of the third resistor is connected to the positive electrode of the second power supply.

8. The drone control circuit according to claim 7, characterized in that: The power control module further includes a shunt control switch, wherein the shunt control switch is provided with a PMOS tube; The positive terminal of the second power supply is connected to the D pole of the shunt control switch, the output terminal of the comparator is connected to the G pole of the shunt control switch, and the S pole of the shunt control switch is connected to the buck module.

9. A drone, characterized in that: The drone is provided with a drone control circuit as claimed in any one of claims 1 to 8, and the drone comprises a main control module, and the main control module is electrically connected to the drone control circuit.

10. The drone according to claim 9, characterized in that: The UAV also includes a wireless communication module, and the UAV is connected to a ground workstation through communication based on the wireless communication module.

Images