CN218771319U - Unmanned aerial vehicle's power supply and distribution grid-connected circuit - Google Patents
Unmanned aerial vehicle's power supply and distribution grid-connected circuit Download PDFInfo
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- CN218771319U CN218771319U CN202222602547.1U CN202222602547U CN218771319U CN 218771319 U CN218771319 U CN 218771319U CN 202222602547 U CN202222602547 U CN 202222602547U CN 218771319 U CN218771319 U CN 218771319U
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Abstract
The invention relates to a power supply and distribution grid-connected circuit of an unmanned aerial vehicle, which is used for carrying out grid connection on various power supply inputs and carrying out hierarchical division on different electric equipment and comprises a plurality of solid-state power control modules, a solid-state relay, a main control board, diodes and a DC-DC power supply chip; the power supply and distribution management method adopts a grid-connected strategy to provide continuous and stable power supply for the unmanned aerial vehicle aiming at different power supply inputs; the power distribution management carries out hierarchical division on different electric equipment, and provides electric energy for the electric equipment through different power distribution strategies, so that the power utilization safety of the unmanned aerial vehicle is ensured; the monitoring protection collects the states of all the electric equipment in real time and sends an alarm or cuts off abnormal electric equipment in time.
Description
Technical Field
The invention belongs to the technical field of electromechanical management of unmanned aerial vehicles, and relates to a power supply and distribution grid-connected circuit of an unmanned aerial vehicle.
Background
In modern war, the unmanned aerial vehicle has been widely used in fields such as battlefield reconnaissance, firepower strike, damage assessment, electronic countermeasure, meteorological monitoring and the like due to characteristics of low cost, long endurance, strong adaptability and the like, and gradually develops into key force of world military. As an aerial operation platform, the power supply safety and stability of the whole unmanned aerial vehicle are very important, namely when the power supply of important airborne equipment is abnormal, the equipment can be ensured to continue to work through redundancy means and strategies, and meanwhile, when certain airborne equipment works abnormally, the power supply of the whole unmanned aerial vehicle can be protected from being influenced. The existing common unmanned aerial vehicle power supply and distribution management method generally adopts the mode that airborne electric equipment is divided into a key mode and a non-key mode, power is supplied to all airborne equipment under normal conditions, when power supply is abnormal, only the key equipment is powered, multistage division is not carried out on the airborne electric equipment, and therefore power supply environments and faults of different scenes are met. In order to overcome the defects of the existing unmanned aerial vehicle power supply and distribution management method, a reliable, stable and safe power supply and distribution management method is provided.
Disclosure of Invention
Technical problem to be solved
In order to avoid the defects of the prior art, the invention provides the power supply and distribution grid-connected circuit of the unmanned aerial vehicle, so that the power supply of the unmanned aerial vehicle is more reliable and stable, and the safety of the whole unmanned aerial vehicle is improved.
Technical scheme
The utility model provides an unmanned aerial vehicle's power supply and distribution grid-connected circuit which characterized in that: the method comprises the steps of carrying out grid connection on various power supply inputs, and carrying out hierarchical division on different electric equipment, wherein the different electric equipment comprises a plurality of solid-state power control modules, solid-state relays, a main control board, diodes and a DC-DC power supply chip; the output of the ground power supply and the output of the direct current generator are connected with a solid power control module through a current acquisition module, output to the class III equipment, and connected to the class II equipment, the class I equipment and the DC-DC power supply chip through a diode connected with the positive end; the output of the emergency power supply is connected with the solid-state relay and the two solid-state power control modules which are connected in parallel through the current acquisition module and is output to the II-type equipment, the I-type equipment and the DC-DC power supply chip; the main control board is connected with the ground power supply, the output end of the direct current generator and the output end of the emergency power supply, the current acquisition module and the voltage acquisition module which are connected with the input end, the connection control solid-state relay and the connection control DC-DC power supply chip, and the 5V output of the DC-DC power supply chip is connected with the plurality of solid-state power control modules and the upper computer for CAN communication.
The solid-state power control module comprises a DC-DC conversion module, a driving circuit, a main controller, a communication interface, a power MOS module, a current sampling module and a voltage sampling module; the main controller communicates with a main control panel CAN through a communication interface, the DC-DC conversion receives 5V voltage and then provides working power to the main controller and the driving circuit, an external input power is output after passing through the power MOS module, the current sampling module and the voltage sampling module sample and input current and voltage of an output end to the main controller, and the main controller controls the driving circuit.
The two solid-state power control modules M3 and M4 connected in parallel realize redundant power supply, and the normal power utilization of equipment is not influenced when any one output fails.
The plurality of solid state power control modules are respectively connected with the I type equipment, the II type equipment and the III type equipment.
The I-type equipment is basic electric equipment for flight safety of the unmanned aerial vehicle, and comprises but is not limited to a flight control computer, an inertial navigation system or a steering engine.
The class ii devices are unmanned aerial vehicle flight aids including, but not limited to, transponders, pitot tube heating devices, or landing gear.
The class III devices refer to the class of mission payload, including but not limited to optoelectronic platforms or radars.
Advantageous effects
The power supply and distribution grid-connected circuit of the unmanned aerial vehicle, provided by the invention, is used for carrying out grid connection on various power supply inputs and carrying out hierarchical division on different electric equipment, and comprises a plurality of solid-state power control modules, a solid-state relay, a main control board, diodes and a DC-DC power supply chip; the power supply and distribution management method adopts a grid-connected strategy to provide continuous and stable power supply for the unmanned aerial vehicle aiming at different power supply inputs; the power distribution management carries out hierarchical division on different electric equipment, and provides electric energy for the electric equipment through different power distribution strategies, so that the power utilization safety of the unmanned aerial vehicle is ensured; the monitoring protection collects the states of all the electric equipment in real time and sends an alarm or cuts off abnormal electric equipment in time.
Compared with the prior art, the invention has the following beneficial effects:
the reliability is high: the grid connection strategy of power supply input effectively reduces the failure of the whole power supply caused by internal faults of power supply and distribution equipment;
the stability is high: the multi-level power utilization equipment is controlled in a strategy mode, and a redundant power supply design is adopted, so that the power utilization stability of the airborne equipment of the unmanned aerial vehicle is improved;
the safety is high: the state of the electric equipment is monitored in real time, an alarm is reported to prompt an operator to process in time, and power supply is cut off to protect the equipment.
The invention is suitable for power supply and distribution management of other types of unmanned aerial vehicles and has wide application range.
Drawings
Fig. 1 is a schematic diagram of a power supply and distribution management circuit.
Fig. 2 is a schematic diagram of a solid state power control module (SSPC).
Fig. 3 is a logic diagram of power supply grid connection, which shows a judgment processing logic of power supply connection or disconnection of the emergency power supply, and the control software of the main control board executes grid connection switching.
Fig. 4 is a logic diagram of power distribution management showing the power supply control logic of a Solid State Power Control (SSPC) to different tier devices.
Fig. 5 is a logic diagram of monitoring protection illustrating an over-voltage, over-current protection process strategy for a Solid State Power Control (SSPC).
Wherein, I.0 represents CAN communication with an upper computer; I.1-I.3 correspond to different power supply inputs; O.1-O.4 correspond to different types of outputs and are respectively used for supplying power to I type, II type and III type; M1-M4 represent different solid state power control modules (SSPC) and include functions of power supply on/off, voltage/current acquisition, short circuit detection and the like.
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
the utility model provides an unmanned aerial vehicle's power supply and distribution management, is incorporated into the power networks including the power supply, distribution management, monitoring protection triplex. The power supply grid connection method comprises the following steps that aiming at different power supply inputs, a grid connection strategy is adopted to provide continuous and stable power supply for the unmanned aerial vehicle; the power distribution management is used for carrying out hierarchical division on different electric equipment, and providing electric energy for the electric equipment through different power distribution strategies, so that the power utilization safety of the unmanned aerial vehicle is ensured; the monitoring protection collects the states of all the electric equipment in real time and sends an alarm or cuts off abnormal electric equipment in time.
The power supply is incorporated into the power networks and is incorporated into the power networks multiple power supply input, for unmanned aerial vehicle lasts the power supply. Common unmanned aerial vehicle power supply inputs include a direct current generator, a ground direct current power supply, and an emergency power supply, which is generally used in emergency situations, such as generator failure, engine air parking, and the like. The generator and the ground power supply adopt a parallel connection mode to supply power for all the electric equipment, and the emergency power supply only supplies power for high-level equipment, so that the power supply reliability is improved.
The power distribution management divides the power utilization equipment into three levels, namely I-type equipment, II-type equipment and III-type equipment. The type I equipment refers to basic electric equipment influencing the flight safety of the unmanned aerial vehicle, such as a flight control computer, inertial navigation (attitude and heading equipment), a steering engine and the like, and the unmanned aerial vehicle cannot continuously fly due to any equipment fault; class ii devices refer to unmanned aerial vehicle flight aids such as transponders, pitot tube heating devices, landing gears, and the like; the class III equipment refers to task loads such as a photoelectric platform, a radar and the like, and the task execution is influenced by equipment faults, but the flight safety is not influenced. The I-type equipment adopts a mode of supplying power immediately after being electrified and not cutting off, and adopts a redundant solid-state power control module to manage and supply power; the II-type equipment is controlled, and the power supply is not interrupted under the emergency condition; class III equipment is the controlled type, initiatively cuts off the power supply under the emergency situation, reduces unmanned aerial vehicle load power demand.
The monitoring protection collects the voltage and current information of the electric equipment in real time, and when the electric equipment is over-voltage, over-current or short-circuited, an alarm is sent to an operator in time or a power supply cut-off mode is adopted to protect the electric equipment from being burnt. The class I equipment implements a strategy of only alarming and not cutting off, and the class II and class III equipment implements modes of overvoltage and overcurrent alarming and short circuit cutting off power supply. When power supply or consumer are unusual, both guaranteed flight safety, also protected equipment, promoted unmanned aerial vehicle platform safety.
The circuit of the embodiment comprises a plurality of solid-state power control modules, a solid-state relay, a main control board, a diode and a DC-DC power supply chip; the output of the ground power supply and the output of the direct current generator are connected with a solid power control module through a current acquisition module, output to the class III equipment, and connected to the class II equipment, the class I equipment and the DC-DC power supply chip through a diode connected with the positive end; the output of the emergency power supply is connected with the solid-state relay and the two solid-state power control modules which are connected in parallel through the current acquisition module and is output to the II-type equipment, the I-type equipment and the DC-DC power supply chip; the main control board is connected with the ground power supply, the output end of the direct current generator and the output end of the emergency power supply, the current acquisition module and the voltage acquisition module which are connected with the input end, the solid-state relay is connected and controlled, the DC-DC power supply chip is connected and controlled, the 5V output of the DC-DC power supply chip is connected with the plurality of solid-state power control modules, and the plurality of solid-state power control modules and the upper computer are connected to carry out CAN communication.
The solid-state power control module comprises a DC-DC conversion module, a driving circuit, a main controller, a communication interface, a power MOS module, a current sampling module and a voltage sampling module; the main controller is communicated with the CAN of the main control board through a communication interface, the DC-DC conversion module receives 5V voltage and then provides working power to the main controller and the driving circuit, an external input power source is output after passing through the power MOS module, the current sampling module and the voltage sampling module sample and input current and voltage of an output end to the main controller, and the main controller controls the driving circuit.
The two paths of solid state power control modules M3 and M4 realize redundant power supply, and the normal power utilization of equipment is not influenced when any one path of output fails.
The control process comprises the following steps:
the main control board is mainly used for collecting voltage and current of input power supply, communicating with an upper computer through a CAN interface and generating signals to control the solid-state relay to be switched on or switched off. When the generator I.2 and the ground direct current power supply I.1 are simultaneously input, the parallel connection mode is adopted, and the power supply is provided by the high voltage or the common shunt power supply. The generator I.2 and the ground direct current power supply I.1 can simultaneously supply power for I type equipment, II type equipment and III type equipment, and the emergency power supply is controlled by the diode to only supply power for the I type equipment and the II type equipment. When the input voltage of the I.1 and I.2 paths is lower than 24V, the main control board controls the solid-state relay to be connected into the emergency power supply, so that the condition that the power supply voltage of the equipment is too low is prevented, and when the input voltage is higher than 25V, the emergency power supply is disconnected for supplying power.
The power utilization equipment is divided into three levels, the type I equipment influences the flight safety of the unmanned aerial vehicle, mainly comprises a flight control computer, inertial navigation, a steering engine, power equipment, a data link and the like, the unmanned aerial vehicle is supplied with power by default after being electrified, redundant power supply is realized by adopting two solid power control modules M3 and M4, and the normal power utilization of the equipment is not influenced when any one output (O.3 or O.4) fails; the type II equipment realizes flight assistance, comprises a transponder, an airspeed head heating device, a night navigation lamp, a landing gear or a skid and the like, is powered by the single solid-state power control module M2, and is powered on/off through external control; the class III devices perform specific tasks, including photoelectric platforms, radars, pods, etc., and are powered by the single solid state power control module M1, with power on/off being achieved by external control. And the power supply is controlled by adopting an independent solid power control module among the devices of each layer, so that the reliability is enhanced. In order to improve the power supply independence among the devices of each hierarchy, the power supply control method can be realized by expanding the solid-state power control module. And a main controller of the solid-state power control module is in CAN communication with the main control board, receives a power supply and distribution instruction, feeds back a power distribution state and controls the power MOSFET to be switched on or off.
The main controller of the solid-state power control module collects the voltage and the current of the electric equipment, judges the voltage and the current in real time, only alarms and prompts when class I equipment is overloaded and does not cut off the output, and class II and class III equipment are protected according to the strategy of a graph 5, so that when certain equipment is abnormal, the equipment can be disconnected from a power grid, and other electric equipment is not influenced.
The present invention is not limited to the above-described embodiments, and various modifications and variations can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides an unmanned aerial vehicle's power supply and distribution grid-connected circuit which characterized in that: the method comprises the steps of carrying out grid connection on various power supply inputs, and carrying out hierarchical division on different electric equipment, wherein the different electric equipment comprises a plurality of solid-state power control modules, solid-state relays, a main control board, diodes and a DC-DC power supply chip; the output of the ground power supply and the output of the direct current generator are connected with a solid-state power control module through a current acquisition module, output to the class III equipment, and connected to the class II equipment, the class I equipment and the DC-DC power supply chip through a diode connected with the positive end; the output of the emergency power supply is connected with the solid-state relay and the two solid-state power control modules which are connected in parallel through the current acquisition module and is output to the II-type equipment, the I-type equipment and the DC-DC power supply chip; the main control board is connected with the ground power supply, the output end of the direct current generator and the output end of the emergency power supply, the current acquisition module and the voltage acquisition module which are connected with the input end, the solid-state relay is connected and controlled, the DC-DC power supply chip is connected and controlled, the 5V output of the DC-DC power supply chip is connected with the plurality of solid-state power control modules, and the plurality of solid-state power control modules and the upper computer are connected to carry out CAN communication.
2. The unmanned aerial vehicle power supply and distribution grid-connected circuit of claim 1, wherein: the solid-state power control module comprises a DC-DC conversion module, a driving circuit, a main controller, a communication interface, a power MOS module, a current sampling module and a voltage sampling module; the main controller communicates with a main control panel CAN through a communication interface, the DC-DC conversion receives 5V voltage and then provides working power to the main controller and the driving circuit, an external input power is output after passing through the power MOS module, the current sampling module and the voltage sampling module sample and input current and voltage of an output end to the main controller, and the main controller controls the driving circuit.
3. The unmanned aerial vehicle power supply and distribution grid-connected circuit of claim 1, wherein: the two parallel solid-state power control modules M3 and M4 realize redundant power supply, and the normal power utilization of equipment is not influenced when any one output fails.
4. The power supply and distribution grid-connected circuit of the unmanned aerial vehicle as claimed in claim 1, wherein: the plurality of solid state power control modules are respectively connected with the I type equipment, the II type equipment and the III type equipment.
5. The unmanned aerial vehicle power supply and distribution grid-connected circuit of claim 1, wherein: the I-type equipment is basic electric equipment safe to the flight of the unmanned aerial vehicle, and comprises but is not limited to a flight control computer, an inertial navigation system or a steering engine.
6. The power supply and distribution grid-connected circuit of the unmanned aerial vehicle as claimed in claim 1, wherein: the class ii devices are unmanned aerial vehicle flight aids including, but not limited to, transponders, pitot tube heating devices, or landing gear.
7. The power supply and distribution grid-connected circuit of the unmanned aerial vehicle as claimed in claim 1, wherein: the class iii devices refer to the class of mission payload, including but not limited to photovoltaic platforms or radars.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222602547.1U CN218771319U (en) | 2022-09-29 | 2022-09-29 | Unmanned aerial vehicle's power supply and distribution grid-connected circuit |
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| CN202222602547.1U CN218771319U (en) | 2022-09-29 | 2022-09-29 | Unmanned aerial vehicle's power supply and distribution grid-connected circuit |
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