CN110439711B - Unmanned aerial vehicle engine control device and method - Google Patents
Unmanned aerial vehicle engine control device and method Download PDFInfo
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- CN110439711B CN110439711B CN201910776313.9A CN201910776313A CN110439711B CN 110439711 B CN110439711 B CN 110439711B CN 201910776313 A CN201910776313 A CN 201910776313A CN 110439711 B CN110439711 B CN 110439711B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
Abstract
The embodiment of the invention provides an unmanned aerial vehicle engine control device and a method, wherein the device comprises: the detection mechanism is arranged on the engine, the detection mechanism and the servo mechanism are connected with the control mechanism, and the servo mechanism is connected with a choke valve of a carburetor of the engine; the detection mechanism is used for detecting the working state of the engine and sending the working state information of the engine to the control mechanism; the control mechanism is used for judging whether the engine stalls halfway or not according to the working state information, and sending a door closing instruction to the servo mechanism if the engine stalls halfway; and the servo mechanism is used for driving the choke valve to close according to the door closing command so as to restart the engine. The technical problems that an engine cannot be automatically restarted, operation is inconvenient and working efficiency of equipment using the engine to provide power is reduced in the prior art are solved.
Description
Technical Field
The application relates to the technical field of engine control, in particular to an unmanned aerial vehicle engine control device and method.
Background
The engine plays an important role in the development of science and technology as a power supply part of various devices. Piston engine generally is applied to middle-size and small-size unmanned aerial vehicle. At present, most piston engines are supplied with oil by using carburetors, and all the carburetors comprise choke valve structures which are mainly used for assisting the normal starting of the engines. If the cylinder body of the engine is not provided with oil or the oil way is not filled with fuel oil, the choke valve needs to be manually closed before the engine is started, so that negative pressure generated in the casing can effectively suck the fuel oil in the oil way when the engine rotates, the choke valve needs to be opened in the normal operation process, and sufficient air can be sucked into the cylinder body to be mixed with the fuel oil for combustion in the operation process of the engine.
Currently, carburetor choke valves are primarily opened and closed manually. However, during operation of the engine, a misfire condition often occurs. To unmanned aerial vehicle at the flight in-process, if adopt manual control choke valve, need descend unmanned aerial vehicle, influence unmanned aerial vehicle normal work. In addition, the engine is installed in a narrow space, and the difficulty in manually controlling the choke valve is high. Namely, the prior art has the technical problems that the engine cannot be automatically restarted, the operation is inconvenient, and the working efficiency of equipment using the engine for providing power is reduced.
Disclosure of Invention
The invention aims to provide an unmanned aerial vehicle engine control device and method, which aim to overcome the defects in the prior art.
In a first aspect, an embodiment of the present invention provides an engine control device for an unmanned aerial vehicle, where the engine control device includes: the detection mechanism, the servo mechanism and the control mechanism;
the detection mechanism is arranged on an engine, the detection mechanism and the servo mechanism are connected with the control mechanism, and the servo mechanism is connected with a choke valve of a carburetor of the engine;
the detection mechanism is used for detecting the working state of the engine and sending the working state information of the engine to the control mechanism;
the control mechanism is used for judging whether the engine stalls halfway or not according to the working state information; if the engine is flameout halfway, a door closing command is sent to the servo mechanism;
and the servo mechanism is used for driving the choke valve to close according to the door closing instruction so as to restart the engine.
Optionally, the control mechanism is further configured to determine whether the engine is started according to the working state information sent by the detection mechanism; if the engine is started, sending a door opening instruction to the servo mechanism;
the servo mechanism is also used for driving the choke valve to be opened according to the door opening instruction so as to enable the engine to continuously and normally work.
Optionally, the servo mechanism is further configured to control the choke valve to close when the servo mechanism is in a power-off or no-signal state.
Optionally, the device further comprises a connecting assembly, and the servo mechanism and the choke valve are connected through the connecting assembly;
the servo mechanism drives the choke valve to rotate within a preset angle range by driving the connecting assembly so as to open or close the choke valve.
Optionally, the connecting assembly comprises a connecting rod and a first rotating structure;
a first through hole and a second through hole are formed in the first rotating structure;
one end of the connecting rod is movably connected with the first rotating structure through the second through hole, and the end far away from the first rotating structure is movably connected with the choke valve;
the servo mechanism is fixedly connected with the first rotating structure through the first through hole.
Optionally, the choke valve includes a choke plate and a second rotating structure;
a third through hole and a fourth through hole are formed in the second rotating structure;
the choke plate is fixedly arranged on the door handle, and the door handle is inserted into the fourth through hole and fixedly connected with the second rotating structure;
the connecting rod is movably connected with the second rotating structure through the third through hole.
Optionally, one end of the connecting rod is provided with a fifth through hole, and the end far away from the fifth through hole is provided with a sixth through hole;
the connecting rod is movably connected with the first rotating structure through the second through hole and the fifth through hole;
the connecting rod is movably connected with the second rotating structure through the sixth through hole and the third through hole.
Optionally, the connecting rod comprises a first section, a second section and a third section;
the first section and the third section are connected through the second section, and the first section and the third section are arranged in parallel;
one end of the first section, which is far away from the third section, is provided with the fifth through hole, and the first section is movably connected with the first rotating structure through the second through hole and the fifth through hole;
the end, far away from the first section, of the third section is provided with the sixth through hole, and the third section is movably connected with the second rotating structure through the sixth through hole and the third through hole.
Optionally, the control mechanism is further configured to determine whether the engine is in a storage state according to the working state information sent by the detection mechanism; and if the engine is in a storage state, sending a door closing command to the servo mechanism.
In a second aspect, an embodiment of the present invention provides an engine control method for an unmanned aerial vehicle, which is applied to any one of the above engine control devices for an unmanned aerial vehicle, and the method includes:
the detection mechanism detects the working state of the engine and sends the working state information of the engine to the control mechanism;
the control mechanism judges whether the engine stalls halfway or not according to the working state information; if the engine is flameout halfway, a door closing command is sent to the servo mechanism;
and the servo mechanism drives the choke valve to close according to the door closing instruction so as to restart the engine.
Compared with the prior art, the invention has the following beneficial effects:
the embodiment of the invention provides an unmanned aerial vehicle engine control device and a method, wherein the device comprises: the detection mechanism is arranged on the engine, the detection mechanism and the servo mechanism are connected with the control mechanism, and the servo mechanism is connected with a choke valve of a carburetor of the engine; the detection mechanism is used for detecting the working state of the engine and sending the working state information of the engine to the control mechanism; the control mechanism is used for judging whether the engine stalls halfway or not according to the working state information, and sending a door closing instruction to the servo mechanism if the engine stalls halfway; and the servo mechanism is used for driving the choke valve to close according to the door closing command so as to restart the engine. By detecting the working state of the engine, when the engine is flamed out halfway, the choke valve is controlled to be closed, so that negative pressure is generated in the carburetor to suck fuel oil, meanwhile, less air can enter the carburetor by closing the choke valve, the concentration of the fuel gas formed by the fuel oil in the carburetor is increased, the fuel gas can be combusted, and the automatic restart of the engine is further realized. The technical problems that an engine cannot be automatically restarted and is inconvenient to operate and the working efficiency of equipment using the engine to provide power in the prior art are solved, the automatic restart of the engine can be automatically controlled, the operation is convenient, and the working efficiency of the equipment using the engine to provide power is improved.
Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic structural diagram of an engine control device 100 of an unmanned aerial vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic block diagram of another engine control device 100 of a drone provided by an embodiment of the present invention.
Fig. 3 is a schematic block diagram of another engine control device 100 of a drone provided by an embodiment of the present invention.
Fig. 4 shows a flowchart of an engine control method for an unmanned aerial vehicle according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating another method for controlling an engine of an unmanned aerial vehicle according to an embodiment of the present invention.
Icon: 100-unmanned aerial vehicle engine control means; 110-a detection mechanism; 120-a servo mechanism; 130-a control mechanism; 140-a connecting assembly; 141-a connecting rod; 142-a first rotating structure; 150-a choke valve; 151-choke plate; 152-a second rotational configuration; 1411-first stage; 1412-second section; 1413-third stage; 160-carburetor.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
At present, in the aircraft using the engine with the carburetor structure in the market, the engine starting process is controlled by manually closing and opening the carburetor choke valve. However, in the first aspect, the aircraft uses the engine shaft all directly or indirectly connected to the propeller, and the use of a manually switched carburetor choke is quite dangerous. Then, in the second aspect, the installation space and the use condition limit, the engine installation position of the aircraft is limited, and the carburetor choke valve can not be opened and closed directly by hand. In the third aspect, the flameout state of the engine in the running process is common, and the restarting control of the engine in the flying process of the aircraft cannot be realized by manually controlling the opening and closing mode of the choke valve.
Therefore, the application provides an unmanned aerial vehicle engine control device and method for solving the technical problems that an engine cannot be automatically restarted and is inconvenient to operate and the working efficiency of equipment using the engine to provide power in the prior art is reduced.
Examples
Referring to fig. 1, fig. 1 shows an unmanned aerial vehicle engine control device 100 provided in an embodiment of the present application, where the unmanned aerial vehicle engine control device 100 includes: detection means 110, servo means 120, control means 130. The detection means 110 is provided in the engine, the detection means 110 and the servo 120 are connected to the control means 130, and the servo 120 is connected to a choke valve 150 of a carburetor 160 of the engine. The detection means 110 is used for detecting the operating state of the engine and sending the operating state information of the engine to the control means 130. The control mechanism 130 is configured to determine whether the engine stalls halfway according to the operating state information, and send a door closing command to the servo mechanism 120 if the engine stalls halfway. The servo 120 is used to drive the choke valve 150 to close according to the door closing command, so as to restart the engine.
By adopting the scheme, through detecting the working state of the engine, when the engine is in flameout halfway, the choke valve 150 is controlled to be closed, so that negative pressure is generated in the carburetor 160 to suck fuel oil, meanwhile, less air can enter the carburetor 160 by closing the choke valve 150, the concentration of the fuel gas formed by the fuel oil in the carburetor 160 is increased, the fuel gas can be combusted, and further the automatic restart of the engine is realized. The technical problems that an engine cannot be automatically restarted and is inconvenient to operate and the working efficiency of equipment (unmanned aerial vehicle) using the engine to provide power is reduced in the prior art are solved, the automatic restarting of the engine can be automatically controlled, the operation is convenient, and the technical effect of the working efficiency of the equipment using the engine to provide power is improved. Meanwhile, the operation is not considered, and the safety of the user is ensured.
As an alternative embodiment, the control mechanism 130 is further configured to determine whether the engine has been started according to the operating state information sent by the detection mechanism 110; if the engine has started, a door open command is sent to the servo 120. The servo 120 is also used to drive the choke valve 150 to open according to the door opening command, so as to keep the engine operating normally. Wherein, determining whether the engine has started may be determined by determining whether gas in the engine (carburetor 160) is in a combustion state, determining that the engine has started when gas in the engine (carburetor 160) is in the combustion state, and otherwise determining that the engine has not started.
By opening the choke valve 150, the air inlet amount in the carburetor 160 is increased, the oxygen content of engine combustion is improved, and fuel gas in the engine is fully combusted, so that the engine can continuously combust to continuously and normally work on the one hand, and the combustion is fully ensured on the other hand, thereby saving energy and protecting environment.
As an alternative embodiment, the servo 120 is also used to control the choke 150 to close when the servo 120 is in a de-energized or no-signal state.
When the servo mechanism 120 is in a power-off state or no-signal state, it can be determined that the engine is in a long-term flameout state or in a storage state, and at this time, the choke valve 150 is controlled to be closed, so that the air inlet of the carburetor 160 can be protected, foreign matters or dust can be prevented from entering the engine, and the engine can be protected.
The control mechanism 130 is further configured to determine whether the engine is in a long-term shutdown or storage state according to the operating state information sent by the detection mechanism 110, and send a door closing command to the servo mechanism 120 if the engine is in the long-term shutdown or storage state. The servo 120 is also used to drive the choke valve 150 to open and close according to the door closing command, so as to protect the engine.
To enable the servo mechanism 120 to control the opening or closing of the choke valve 150, as an alternative embodiment, the drone engine control device 100 further includes a control connection assembly 140, please refer to fig. 2, wherein the servo mechanism 120 and the choke valve 150 are connected by the control connection assembly 140. The servo mechanism 120 drives the choke valve 150 to rotate within a predetermined angle range through the driving control connection assembly 140, so as to open or close the choke valve 150. Specifically, the servo mechanism 120 drives the choke valve 150 to rotate counterclockwise by a first angle through driving the control connection assembly 140, wherein the first angle is any angle within a preset angle range. For example, if the predetermined angle range is 0 to 90 degrees, the first angle may be 45 degrees, 90 degrees, or the like, the choke valve 150 is in the closed state when the choke valve 150 is at 0 degree, and the choke valve 150 is in the fully open state when the choke valve 150 is at 90 degrees (rotated from 0 degree to 90 degrees). When the first angle is not equal to 0, the needle rotates by the first angle, so that the choke valve 150 can be driven to open by the first angle, and then the mechanism rotates by the drive control connection assembly 140 counterclockwise by the first angle (from 90 degrees to 0 degrees), so that the choke valve 150 can be driven to rotate clockwise by the first angle in the reverse direction, so that the choke valve 150 is driven to close.
In order to effectively and flexibly drive the choke valve 150 to open or close, as an alternative embodiment, the control and connection assembly 140 includes a connection rod 141 and a first rotating structure 142, and the first rotating structure 142 is provided with a first through hole and a second through hole. One end of the connecting rod 141 is movably connected to the first rotating structure 142 through the second through hole, and the end far away from the first rotating structure 142 is movably connected to the choke valve 150. The first through hole of the servo mechanism 120 is fixedly connected to the first rotating structure 142, so that the servo mechanism 120 can drive the first rotating structure 142 to rotate within a predetermined angle range, the connecting rod 141 is movably connected to the first rotating structure 142 through the second through hole, and the first rotating structure 142 can drive the connecting rod 141 to rotate within the predetermined angle range. The choke valve 150 includes a choke plate 151 and a second rotating structure 152, and the second rotating structure 152 is provided with a third through hole and a fourth through hole. The choke plate 151 is fixedly disposed on the door handle, and the door handle is inserted into the fourth through hole and fixedly connected to the second rotating structure 152, so that the relative position of the choke plate 151 and the second rotating structure 152 is kept unchanged. The connecting rod 141 is movably connected to the second rotating structure 152 through the third through hole, and when the connecting rod 141 rotates within a predetermined angle range, the second rotating structure 152 can be driven to rotate within the predetermined angle range, so as to drive the choke plate 151 fixedly connected to the second rotating structure 152 to rotate within the predetermined angle range, thereby opening or closing the choke valve 150.
In order to save the power for driving the choke valve 150 and reduce the energy consumption, one end of the connecting rod 141 is provided with a fifth through hole, the end far away from the fifth through hole is provided with a sixth through hole, the connecting rod 141 is movably connected with the first rotating structure 142 through the second through hole and the fifth through hole, and the connecting rod 141 is movably connected with the second rotating structure 152 through the sixth through hole and the third through hole. The connecting rod 141 and the first rotating structure 142 are movably connected through the second through hole and the fifth through hole, and the connecting rod 141 passes through the second through hole and the fifth through hole through movable fixing parts such as screws to realize the movable connection of the connecting rod 141 and the first rotating structure 142, and passes through the sixth through hole and the third through hole through movable fixing parts such as screws to realize the movable connection of the connecting rod 141 and the second rotating structure 152.
In order to save the occupied space of the engine control device 100 of the unmanned aerial vehicle, save driving power and improve the effect of controlling the opening or closing of the choke valve 150, as an optional embodiment, the connecting rod 141 comprises a first section 1411, a second section 1412 and a third section 1413, the first section 1411 and the third section 1413 are connected through the second section 1412, the first section 1411 and the third section 1413 are arranged in parallel, a fifth through hole is formed in one end of the first section 1411, which is far away from the third section 1413, and the first section 1411 is movably connected with the first rotating structure 142 through the second through hole and the fifth through hole. A sixth through hole is formed in one end, away from the first section 1411, of the third section 1413, and the third section 1413 is movably connected with the second rotating structure 152 through the sixth through hole and the third through hole. Optionally, the first segment 1411 overlaps the third segment 1413, and the second segment 1412 is connected to both the first segment 1411 and the third segment 1413 in an arc having the same angle.
By adopting the above scheme, the effectiveness of the servo mechanism 120 in driving the choke valve 150 is improved.
For clarity of explanation of the operation principle of the unmanned aerial vehicle engine control device 100 of the present application, please refer to fig. 2 and fig. 3 in combination, where fig. 2 is a schematic structural diagram of the unmanned aerial vehicle engine control device 100 with the choke valve 150 in a closed state, and fig. 3 is a schematic structural diagram of the engine control with the choke valve 150 in an open state.
In fig. 2, the choke plate 151 is at an angle of 0 degrees, and in order to fully open the choke valve 150 to allow the choke valve 150 to have the maximum opening degree, it is necessary to control the choke valve 150 to rotate up to 90 degrees, i.e., the position state of the choke plate 151 as shown in fig. 3. At this time, the servo mechanism 120 drives the first rotating structure 142 to rotate clockwise by 90 degrees, and then drives the second rotating structure 152 to rotate counterclockwise by 90 degrees, and then drives the choke plate 151 to rotate counterclockwise by 90 degrees, so as to reach the maximum opening. When the choke valve 150 needs to be closed, the choke valve 150 needs to be controlled to return to 0 degree, at this time, the servo mechanism 120 drives the first rotating structure 142 to rotate 90 degrees counterclockwise, and then drives the second rotating structure 152 to rotate 90 degrees clockwise, and then drives the choke plate 151 to rotate 90 degrees counterclockwise, so as to close the choke valve 150.
In an embodiment of the present invention, the detection mechanism 110 may be a sensor, such as a pressure sensor, a temperature sensor, a photoelectric sensor, or the like. The control mechanism 130 may be a controller, processor, or the like. The sensors are electrically interfaced with the controller and the servo 120 is electrically interfaced with the controller.
By adopting the scheme, through detecting the working state of the engine, when the engine is in flameout halfway, the choke valve 150 is controlled to be closed, so that negative pressure is generated in the carburetor 160 to suck fuel oil, meanwhile, less air can enter the carburetor 160 by closing the choke valve 150, the concentration of the fuel gas formed by the fuel oil in the carburetor 160 is increased, the fuel gas can be combusted, and further the automatic restart of the engine is realized. When the engine is burning, the choke valve 150 is controlled to open, so that the engine can continuously burn, and the normal work of the engine is ensured. The operation of opening or closing the choke valve 150 is automated without considering the operation, ensuring the safety of the user while improving the accuracy of the operation of opening or closing the choke valve 150.
Based on the unmanned aerial vehicle engine control device, the embodiment of the invention also provides an unmanned aerial vehicle engine control method, and the method is applied to the unmanned aerial vehicle engine control device. Referring to fig. 4, fig. 4 shows a flow chart of a method for controlling an engine of an unmanned aerial vehicle. The unmanned aerial vehicle engine control method comprises S101-S104 shown in FIG. 4.
S101: the detection mechanism detects the working state of the engine and sends the working state information of the engine to the control mechanism.
S102: the control mechanism judges whether the engine is flameout halfway or not according to the working state information.
S103: and if the engine is flameout halfway, sending a door closing command to the servo mechanism.
S104: and the servo mechanism drives the choke valve to close according to the door closing command so as to restart the engine.
As an optional implementation, the drone engine control method further includes: the control mechanism judges whether the engine is started or not according to the working state information sent by the detection mechanism; if the engine is started, a door opening command is sent to the servo mechanism. The servo mechanism drives the choke valve to open according to the door opening instruction, so that the engine of the engine continuously and normally works.
As an optional implementation, the drone engine control method further includes: whether the servo motor is in a power-off state or a no-signal state is detected, and when the servo mechanism is in the power-off state or the no-signal state, the servo mechanism controls the choke valve to be closed so as to prevent dust impurities from entering the inside of the carburetor and protect the engine.
As an optional implementation, the drone engine control method further includes: the control mechanism also judges whether the engine is in a long-term flameout or storage state according to the working state information sent by the detection mechanism, and if the engine is in the long-term flameout or storage state, a door closing instruction is sent to the servo mechanism so that the servo mechanism drives the choke valve to close to protect the engine.
In order to more clearly show the flow of the engine control method of the present application, please refer to fig. 5, the engine control method of the unmanned aerial vehicle includes S201 to S209 in fig. 5.
S201: the detection mechanism detects the working state of the engine and sends the working state information of the engine to the control mechanism.
S201: the control mechanism judges whether the engine is flameout halfway or not according to the working state information.
S203: and if the engine is flameout halfway, sending a door closing command to the servo mechanism.
S204: the servo mechanism drives the choke valve to close according to the door closing command, so that the engine can restart combustion.
S205: the control mechanism judges whether the engine is started or not according to the working state information sent by the detection mechanism.
And S206, if the engine is started, sending a door opening instruction to the servo mechanism.
S207: the servo mechanism drives the choke valve to open according to the door opening instruction so as to enable the engine to continuously and normally work.
S208: the control mechanism also judges whether the engine is in a long-term flameout or storage state according to the working state information sent by the detection mechanism, wherein the long-term flameout indicates that the engine does not work normally.
S209: if the engine is in a long-term flameout or storage state, a door closing command is sent to the servo mechanism, so that the servo mechanism drives the choke valve to close, and the engine is protected.
And if the engine is not in a long-term flameout or storage state, judging whether the engine is in combustion, if the engine is in combustion, controlling a choke valve to be opened, if the engine is not in combustion, determining that the engine is in flameout halfway, turning to S203, and executing the operation of S203.
By adopting the scheme, the engine choke valve is in the closed state during long-term flameout or storage of the engine, and when the servo mechanism is in the power-off or no-signal period, the engine choke valve is in the closed state, so that the engine can be protected. When the engine is started, the choke valve of the engine is in a closed state, the sensor detects that the engine can be normally ignited in the running process, and the controller controls the servo mechanism to open the choke valve of the engine so as to ensure the normal running of the engine. In the running process of the engine, the controller controls the servo mechanism to continuously control the choke valve of the engine to be always in an open state. After the normal operation of the engine is finished, the controller controls the servo mechanism to close the choke valve of the engine so as to prevent environmental impurities from entering the carburetor in the storage process.
When the engine is applied to an aircraft (unmanned aerial vehicle), in the flying process of the aircraft, if the engine is accidentally flamed out, the controller controls the servo mechanism to drive the choke valve of the engine to be closed, then the controller carries out engine restart operation in the air, and when the sensor detects that the engine can normally ignite, the controller controls the servo mechanism to drive the choke valve of the engine to be opened, and the engine can normally run. The engine control device and the engine control method are suitable for an aircraft system, when the aircraft stalls under the condition of non-fuel oil exhaustion in the flight process, the controller controls the engine to restart, the choke valve is controlled to be closed firstly in the starting and restarting process, and the choke valve is controlled to be opened when the engine is ignited and exploded, so that the engine restarting success rate can be effectively ensured. The automatic restarting of the engine is realized, the normal work of the aircraft is ensured, and the working efficiency of the aircraft is improved.
Therefore, the unmanned aerial vehicle engine control device and the method are suitable for aircrafts, engines using piston engine aircrafts mostly use carburetor type structures, the opening and closing of the choke valve are required to be manually controlled during use to realize engine starting state control, but the engine is frequently accidentally flameout caused by oil supply interruption or other states in the flying process, the opening and closing of the choke valve cannot be manually controlled again during flying, and the probability of directly controlling the engines is extremely low. The application provides an unmanned aerial vehicle engine control device and method, can save manual control choke valve switching completely in ground inspection and start-up engine process to choke valve open time when can accurate control engine starts, can avoid the not accurate control when artificial operation causes can not start or "flood the jar", can avoid simultaneously because the inconvenient direct control's that operating space limitation caused the condition when using on the aircraft. In the flying process of the aircraft, if accidental flameout caused by non-fuel oil exhaustion is encountered, the controller simultaneously executes choke valve control which is the same as ground starting when controlling the engine to start in the air, and the success of starting each time is effectively ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An unmanned aerial vehicle engine control device, characterized in that the device includes: the detection mechanism, the servo mechanism and the control mechanism;
the detection mechanism is arranged on an engine, the detection mechanism and the servo mechanism are connected with the control mechanism, and the servo mechanism is connected with a choke valve of a carburetor of the engine;
the detection mechanism is used for detecting the working state of the engine and sending the working state information of the engine to the control mechanism;
the control mechanism is used for judging whether the engine stalls halfway or not according to the working state information; if the engine is flameout halfway, a door closing command is sent to the servo mechanism;
and the servo mechanism is used for driving the choke valve to close according to the door closing instruction so as to restart the engine.
2. The device according to claim 1, wherein the control mechanism is further configured to determine whether the engine has been started according to the operating state information sent by the detection mechanism; if the engine is started, sending a door opening instruction to the servo mechanism;
the servo mechanism is also used for driving the choke valve to be opened according to the door opening instruction so as to enable the engine to continuously and normally work.
3. The apparatus of claim 1,
the servo mechanism is also used for controlling the choke valve to be closed when the servo mechanism is in a power-off state or a no-signal state.
4. The apparatus of claim 1, further comprising a connection assembly through which the servo mechanism and the choke valve are connected;
the servo mechanism drives the choke valve to rotate within a preset angle range by driving the connecting assembly so as to open or close the choke valve.
5. The apparatus of claim 4, wherein the connection assembly comprises a connection rod and a first rotational structure;
a first through hole and a second through hole are formed in the first rotating structure;
one end of the connecting rod is movably connected with the first rotating structure through the second through hole, and the end far away from the first rotating structure is movably connected with the choke valve;
the servo mechanism is fixedly connected with the first rotating structure through the first through hole.
6. The apparatus of claim 5, wherein the choke valve comprises a choke plate and a second rotational structure;
a third through hole and a fourth through hole are formed in the second rotating structure;
the choke plate is fixedly arranged on the door handle, and the door handle is inserted into the fourth through hole and fixedly connected with the second rotating structure;
the connecting rod is movably connected with the second rotating structure through the third through hole.
7. The device of claim 6, wherein one end of the connecting rod is provided with a fifth through hole, and the end far away from the fifth through hole is provided with a sixth through hole;
the connecting rod is movably connected with the first rotating structure through the second through hole and the fifth through hole;
the connecting rod is movably connected with the second rotating structure through the sixth through hole and the third through hole.
8. The device of claim 7, wherein the connecting rod comprises a first section, a second section, and a third section;
the first section and the third section are connected through the second section, and the first section and the third section are arranged in parallel;
one end of the first section, which is far away from the third section, is provided with the fifth through hole, and the first section is movably connected with the first rotating structure through the second through hole and the fifth through hole;
the end, far away from the first section, of the third section is provided with the sixth through hole, and the third section is movably connected with the second rotating structure through the sixth through hole and the third through hole.
9. The device according to claim 1, wherein the control mechanism is further configured to determine whether the engine is in a storage state according to the working state information sent by the detection mechanism; and if the engine is in a storage state, sending a door closing command to the servo mechanism.
10. A method for controlling an engine of a drone, applied to the engine control device of a drone according to any one of claims 1 to 9, characterized in that it comprises:
the detection mechanism detects the working state of the engine and sends the working state information of the engine to the control mechanism;
the control mechanism judges whether the engine stalls halfway or not according to the working state information; if the engine is flameout halfway, a door closing command is sent to the servo mechanism;
and the servo mechanism drives the choke valve to close according to the door closing instruction so as to restart the engine.
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Application publication date: 20191112 Assignee: CHENGDU ZONGHENGRONGHE TECHNOLOGY Co.,Ltd. Assignor: CHENGDU ZONGHENG DAPENG UNMANNED PLANE TECHNOLOGY Co.,Ltd. Contract record no.: X2023510000006 Denomination of invention: Drone engine control device and method Granted publication date: 20200814 License type: Common License Record date: 20230512 |
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