CN114448303B - Control circuit of direct current motor in unmanned aerial vehicle charging box - Google Patents
Control circuit of direct current motor in unmanned aerial vehicle charging box Download PDFInfo
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- CN114448303B CN114448303B CN202111665345.5A CN202111665345A CN114448303B CN 114448303 B CN114448303 B CN 114448303B CN 202111665345 A CN202111665345 A CN 202111665345A CN 114448303 B CN114448303 B CN 114448303B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The application provides a control circuit of a direct current motor in an unmanned aerial vehicle charging box, which comprises a direct current motor driving chip; the direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the singlechip and controlling the direct current motor to rotate forwards or reversely according to the input signal of the singlechip; the direct current motor driving chip comprises a current limiting control end, and the current limiting control end is connected with a current limiting control circuit and used for adjusting the current limiting value of the direct current motor. In the practical application process, the current required by the starting of the direct current motor is large, but the working current in the motion process is small. The application adopts a low-cost direct current motor driving chip, externally utilizes the existing singlechip in the system, performs simple forward and reverse rotation control through two I/O ports, does not need special motor control resources, and has simple structure, small area and low cost.
Description
Technical Field
The application relates to the technical field of unmanned aerial vehicle charging box motor control, in particular to a control circuit of a direct current motor in an unmanned aerial vehicle charging box.
Background
Unmanned aerial vehicle charging cabin is a ground equipment that cooperates unmanned aerial vehicle independently unmanned aerial vehicle to work, can charge and outside telecommunication etc. function to unmanned aerial vehicle. The method for realizing the charging function of the unmanned aerial vehicle charging cabin comprises the following steps of: after the unmanned aerial vehicle executes the flight task, the unmanned aerial vehicle charging cabin control motor pushes out the apron, and after the unmanned aerial vehicle falls onto the apron, the unmanned aerial vehicle charging cabin control motor drags the unmanned aerial vehicle into the unmanned aerial vehicle charging cabin for charging; after charging, pushing the unmanned aerial vehicle parking apron out of the unmanned aerial vehicle charging cabin, taking off and executing the next task. The motor and motor control circuit can be used for dragging, pushing out the parking apron and the like.
In the prior art, complete motor control generally comprises a controller, a driver, a power device and the like, samples the current of a motor, and adjusts the thrust of the motor by controlling the current of the motor. Direct current motor has special drive, can carry out unmanned aerial vehicle, autonomous charging at unmanned aerial vehicle charging cabin's apron drag, release in-process, but above-mentioned structure is complicated, and the area is big, and overall cost is higher.
Disclosure of Invention
The application provides a control circuit of a direct current motor in an unmanned aerial vehicle charging box, which aims to solve the technical problems of complex motor control structure, large area and higher overall cost in the dragging and pushing process of an apron of an unmanned aerial vehicle charging cabin in the prior art.
The application provides a control circuit of a direct current motor in an unmanned aerial vehicle charging box, which is applied to the direct current motor, wherein the direct current motor is used for controlling pushing out or pulling out of an unmanned aerial vehicle charging cabin, and the control circuit comprises a direct current motor driving chip;
the direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the single chip microcomputer and controlling the direct current motor to rotate forwards or reversely according to the input signal of the single chip microcomputer;
The direct current motor driving chip comprises a current limiting control end, and the current limiting control end is connected with a current limiting control circuit and used for adjusting the current limiting value of the direct current motor.
Optionally, the current limiting control terminal is a current terminal of a direct current motor, and the current limiting control circuit includes: the direct current motor current end is connected with the second current limiting resistor through the second switch, the resistance values of the first current limiting resistor and the second current limiting resistor are different, the first switch and the second switch are used for receiving a singlechip switch control signal and controlling the first switch and the second switch to be closed or opened according to the singlechip switch control signal, and the direct current motor current limiting value is adjusted.
Optionally, the dc motor driving chip further includes an input reference voltage terminal, where the input reference voltage terminal is connected to a system power supply, and is used to supply power to the dc motor driving chip.
Optionally, the current limiting control terminal is the input reference voltage terminal, and the current limiting control circuit includes: the system power supply is connected with the input reference voltage end through a third resistor, the input reference voltage end is connected with a fourth resistor, and the fourth resistor is used for receiving a third single-chip microcomputer signal and adjusting the current limiting value of the direct-current motor according to the third single-chip microcomputer signal.
Optionally, the input control end includes a first input control end and a second input control end, the single-chip microcomputer input signal includes a first single-chip microcomputer signal and a second single-chip microcomputer signal, the first input control end is used for receiving the first single-chip microcomputer signal, the second input control end is used for receiving the second single-chip microcomputer signal, wherein the first single-chip microcomputer signal is in a high level and the second single-chip microcomputer signal is in a low level, and the output motor control end controls the direct-current motor to rotate forward and the parking apron to push out; the first single-chip microcomputer signal is of a low level, the second single-chip microcomputer signal is of a high level, and the control end of the output motor controls the direct-current motor to rotate reversely, so that the parking apron is pulled.
Optionally, the output motor control end includes first output motor control end and second output motor control end, first output motor control end with the second output motor control end is connected respectively direct current motor, wherein, first output motor control end is used for controlling direct current motor corotation, second output motor control end is used for controlling direct current motor corotation.
Optionally, the resistance value of the first current limiting resistor is 0.8Ω, and the resistance value of the second current limiting resistor is 0.15Ω.
Optionally, the system power supply voltage is 3.3V.
According to the technical scheme, the application provides a control circuit of a direct current motor in an unmanned aerial vehicle charging box, wherein the control circuit is applied to the direct current motor, the direct current motor is used for controlling pushing or pulling of an unmanned aerial vehicle charging cabin, and the control circuit comprises a direct current motor driving chip; the direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the single chip microcomputer and controlling the direct current motor to rotate forwards or reversely according to the input signal of the single chip microcomputer; the direct current motor driving chip comprises a current limiting control end, and the current limiting control end is connected with a current limiting control circuit and used for adjusting the current limiting value of the direct current motor.
In the practical application process, the current required by the starting of the direct current motor is large, but the working current in the motion process is small. The application adopts a low-cost direct current motor driving chip, externally utilizes the existing singlechip in the system, performs simple forward and reverse rotation control through two I/O ports, does not need special motor control resources, and has simple structure, small area and low cost.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a circuit diagram of a control circuit of a direct current motor in an unmanned aerial vehicle charging box according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to solve the technical problems of complex motor control structure, large area and higher overall cost in the dragging and pushing process of an apron of an unmanned aerial vehicle charging cabin in the prior art, the application discloses a control circuit of a direct current motor in an unmanned aerial vehicle charging box through the following embodiment.
Referring to fig. 1, a circuit diagram of a control circuit of a direct current motor in an unmanned aerial vehicle charging box provided by an embodiment of the application is provided, the control circuit is applied to the direct current motor, the direct current motor is used for controlling pushing or pulling of a charging cabin of the unmanned aerial vehicle, and the control circuit comprises a direct current motor driving chip.
The direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the single chip microcomputer and controlling the direct current motor to rotate forwards or reversely according to the input signal of the single chip microcomputer.
The direct current motor driving chip comprises a current limiting control end, and the current limiting control end is connected with a current limiting control circuit and used for adjusting the current limiting value of the direct current motor.
Specifically, the current required for starting the direct current motor is large, but the working current in the movement process is small, and the structure can be protected from deformation and damage when the motor is blocked to cause locked rotation. According to the practical application requirements, namely one-dimensional movement of a motor movement path: push or pull, 1 DC motor driving chip (with driving stage and power stage inside) with low cost is adopted, and the existing singlechip in the system is externally utilized to perform simple forward and reverse rotation control through two I/O ports, so that special motor control resources are not needed. The key point is how to realize two different maximum current limits, not only can realize the high current required during starting (the motor needs a large force when starting and separating from the limit position, and the required current is not more than 2.2A), but also can recover to a small current during normal uniform motion (the structure protection requires a small force and the current is not more than 0.4A). The direct current motor driving chip starts to stop driving after the current reaches the maximum current limit; and meanwhile, the motor is continuously driven to move until the resistance disappears.
The current limit value of the direct current motor is determined by the following formula: maximum limiting current = reference voltage/(chip amplification factor current limiting resistor). Wherein the chip amplification factor is a constant in relation to the DC motor driving chip. It can be seen that both the current limiting resistor and the reference voltage can affect the maximum current setting, and the final effect is achieved for both variables.
The variable is the current limiting resistance: in some embodiments of the present application, the current limiting control terminal is a dc motor current terminal, and the current limiting control circuit includes: the direct current motor current end is connected with the second current limiting resistor through the second switch, the resistance values of the first current limiting resistor and the second current limiting resistor are different, the first switch and the second switch are used for receiving a singlechip switch control signal and controlling the first switch and the second switch to be closed or opened according to the singlechip switch control signal, and the direct current motor current limiting value is adjusted. The current limiting resistor is controlled by the singlechip to modify the current limiting value of the direct current motor of the control apron, so that the thrust of the direct current motor is controlled.
Further, the resistance of the first current limiting resistor is 0.8Ω, and the resistance of the second current limiting resistor is 0.15Ω.
Specifically, as shown in fig. 1, two switches are provided, each switch is connected with a current limiting resistor, the resistance value of the first current limiting resistor is large and is 0.8Ω, and the corresponding formula calculates to obtain 0.4A maximum current; the second current limiting resistor has a small resistance value of 0.15 omega, corresponding to a maximum current of 2.2A. The singlechip can control which switch is opened through the fourth singlechip signal and the fifth singlechip signal, and the corresponding current limiting resistor is selected to obtain the corresponding limiting current. 2.2A corresponds to the large current required by the starting of the motor; 0.4A corresponds to a small current at constant motion to protect the structural material.
In some embodiments of the present application, the dc motor driver chip further includes an input reference voltage terminal, where the input reference voltage terminal is connected to a system power supply, and is used to supply power to the dc motor driver chip.
The variables are reference voltages: in some embodiments of the present application, the current limiting control terminal is the input reference voltage terminal, and the current limiting control circuit includes: the system power supply is connected with the input reference voltage end through a third resistor, the input reference voltage end is connected with a fourth resistor, and the fourth resistor is used for receiving a third single-chip microcomputer signal and adjusting the current limiting value of the direct-current motor according to the third single-chip microcomputer signal.
Further, the system power supply voltage was 3.3V.
Specifically, the system power supply 3.3V supplies power to the direct current motor driving chip through the third resistor. The third singlechip signal is configured into a high-resistance state when started, and the reference voltage of the direct current motor driving chip is not influenced. According to the formula, the requirement of solving the limit position of the maximum current of 2.2A is obtained. Next, the singlechip counts 1 second, and configures the third singlechip signal to be low level. In this way, 3.3V is divided by the third resistor and the fourth resistor to obtain an intermediate voltage, such as 0.5V, so that the maximum limiting current is 0.4A, small current required for uniform motion is realized, and structural materials are protected. The reference voltage value of the DC motor driving chip is controlled by the singlechip, and the current limiting value of the DC motor controlling the parking apron is modified, so that the thrust of the DC motor is controlled.
In some embodiments of the present application, the input control end includes a first input control end and a second input control end, the single-chip microcomputer input signal includes a first single-chip microcomputer signal and a second single-chip microcomputer signal, the first input control end is configured to receive the first single-chip microcomputer signal, the second input control end is configured to receive the second single-chip microcomputer signal, where the first single-chip microcomputer signal is at a high level and the second single-chip microcomputer signal is at a low level, and the output motor control end controls the direct-current motor to rotate forward and the apron to push out. The first single-chip microcomputer signal is of a low level, the second single-chip microcomputer signal is of a high level, and the control end of the output motor controls the direct-current motor to rotate reversely, so that the parking apron is pulled.
In some embodiments of the present application, the output motor control end includes a first output motor control end and a second output motor control end, where the first output motor control end and the second output motor control end are respectively connected to the dc motor, and the first output motor control end is used to control the dc motor to rotate forward, and the second output motor control end is used to control the dc motor to rotate backward.
According to the technical scheme, the control circuit of the direct current motor in the unmanned aerial vehicle charging box is applied to the direct current motor, the direct current motor is used for controlling pushing or pulling of a charging cabin of the unmanned aerial vehicle, and the control circuit comprises a direct current motor driving chip. The direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the single chip microcomputer and controlling the direct current motor to rotate forwards or reversely according to the input signal of the single chip microcomputer. The direct current motor driving chip comprises a current limiting control end, and the current limiting control end is connected with a current limiting control circuit and used for adjusting the current limiting value of the direct current motor.
In the practical application process, the current required by the starting of the direct current motor is large, but the working current in the motion process is small. The application adopts a low-cost direct current motor driving chip, externally utilizes the existing singlechip in the system, performs simple forward and reverse rotation control through two I/O ports, does not need special motor control resources, and has simple structure, small area and low cost.
The application has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the application. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these fall within the scope of the present application. The scope of the application is defined by the appended claims.
Claims (8)
1. The control circuit of the direct current motor in the unmanned aerial vehicle charging box is applied to the direct current motor, and the direct current motor is used for controlling pushing out or pulling of the unmanned aerial vehicle charging cabin and is characterized by comprising a direct current motor driving chip;
the direct current motor driving chip comprises an input control end and an output motor control end, wherein the output motor control end is connected with the direct current motor and is used for receiving an input signal of the single chip microcomputer and controlling the direct current motor to rotate forwards or reversely according to the input signal of the single chip microcomputer;
the direct current motor driving chip comprises a current limiting control end, wherein the current limiting control end is connected with a current limiting control circuit and is used for adjusting the current limiting value of the direct current motor;
The current limiting control end is a direct current motor current end or an input reference voltage end.
2. The control circuit of claim 1, wherein the current limit control terminal is a dc motor current terminal, the current limit control circuit comprising: the direct current motor current end is connected with a first current limiting resistor through the first switch, the direct current motor current end is connected with a second current limiting resistor through the second switch, the resistance values of the first current limiting resistor and the second current limiting resistor are different, the first switch and the second switch are used for receiving a singlechip switch control signal, and the first switch and the second switch are controlled to be closed or opened according to the singlechip switch control signal, so that the direct current motor current limiting value is adjusted.
3. The control circuit of claim 1, wherein the dc motor driver chip further comprises an input reference voltage terminal connected to a system power supply for powering the dc motor driver chip.
4. A control circuit according to claim 3, wherein the current limit control terminal is the input reference voltage terminal, the current limit control circuit comprising: the system power supply is connected with the input reference voltage end through a third resistor, the input reference voltage end is connected with a fourth resistor, and the fourth resistor is used for receiving a third single-chip microcomputer signal and adjusting the current limiting value of the direct-current motor according to the third single-chip microcomputer signal.
5. The control circuit of claim 1, wherein the input control terminal comprises a first input control terminal
The single-chip microcomputer input signal comprises a first single-chip microcomputer signal and a second single-chip microcomputer signal, the first input control end is used for receiving the first single-chip microcomputer signal, the second input control end is used for receiving the second single-chip microcomputer signal, wherein the first single-chip microcomputer signal is in a high level and the second single-chip microcomputer signal is in a low level, and the output motor control end controls the direct-current motor to rotate positively and the parking apron to push out; the first SCM signal is low level and the second SCM signal is low level
The signal of the singlechip is high level, and the control end of the output motor controls the direct current motor to rotate reversely, so that the apron is pulled.
6. The control circuit of claim 5, wherein the output motor control terminal comprises a first output motor control terminal and a second output motor control terminal, the first output motor control terminal and the second output motor control terminal being respectively connected to the dc motor, wherein the first output motor control terminal is configured to control the dc motor to rotate in a forward direction, and the second output motor control terminal is configured to control the dc motor to rotate in a reverse direction.
7. The control circuit of claim 2, wherein the first current limiting resistor has a resistance of 0.8 Ω and the second current limiting resistor has a resistance of 0.15 Ω.
8. The control circuit of claim 4, wherein the system supply voltage is 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111665345.5A CN114448303B (en) | 2021-12-30 | 2021-12-30 | Control circuit of direct current motor in unmanned aerial vehicle charging box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111665345.5A CN114448303B (en) | 2021-12-30 | 2021-12-30 | Control circuit of direct current motor in unmanned aerial vehicle charging box |
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| CN114448303A CN114448303A (en) | 2022-05-06 |
| CN114448303B true CN114448303B (en) | 2024-05-28 |
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| CN202111665345.5A Active CN114448303B (en) | 2021-12-30 | 2021-12-30 | Control circuit of direct current motor in unmanned aerial vehicle charging box |
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Families Citing this family (1)
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| CN117806190A (en) * | 2023-12-27 | 2024-04-02 | 深圳大漠大智控技术有限公司 | Unmanned aerial vehicle airport take-off and landing stage control method and device and unmanned aerial vehicle airport |
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| US7336044B1 (en) * | 1999-09-20 | 2008-02-26 | Visiocorp Patents S.A.R.L. | Direct current motor control circuit |
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| CN114448303A (en) | 2022-05-06 |
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